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linux/fs/smb/client/cifsproto.h

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cifs: use SPDX-Licence-Identifier Add SPDX license identifier and replace license boilerplate. Corrects various checkpatch errors with the older format for noting the LGPL license. Signed-off-by: Steve French <stfrench@microsoft.com>
2021-06-18 13:31:49 +08:00
/* SPDX-License-Identifier: LGPL-2.1 */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
*
[CIFS] DFS build fixes Also includes a few minor changes suggested by Christoph Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-01-25 18:12:41 +08:00
* Copyright (c) International Business Machines Corp., 2002,2008
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
* Author(s): Steve French (sfrench@us.ibm.com)
*
*/
#ifndef _CIFSPROTO_H
#define _CIFSPROTO_H
#include <linux/nls.h>
cifs: fix sharing of DFS connections When matching DFS connections, we can't rely on the values set in cifs_sb_info::prepath and cifs_tcon::tree_name as they might change during DFS failover. The DFS referrals related to a specific DFS tcon are already matched earlier in match_server(), therefore we can safely skip those checks altogether as the connection is guaranteed to be unique for the DFS tcon. Besides, when creating or finding an SMB session, make sure to also refcount any DFS root session related to it (cifs_ses::dfs_root_ses), so if a new DFS mount ends up reusing the connection from the old mount while there was an umount(2) still in progress (e.g. umount(2) -> cifs_umount() -> reconnect -> cifs_put_tcon()), the connection could potentially be put right after the umount(2) finished. Patch has minor update to include fix for unused variable issue noted by the kernel test robot Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/oe-kbuild-all/202305041040.j7W2xQSy-lkp@intel.com/ Cc: stable@vger.kernel.org # v6.2+ Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-04-24 10:26:51 +08:00
#include <linux/ctype.h>
smb3: add additional ftrace entry points for entry/exit to cifs.ko Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-19 15:28:53 +08:00
#include "trace.h"
cifs: Make use of DFS cache to get new DFS referrals This patch will make use of DFS cache routines where appropriate and do not always request a new referral from server. Signed-off-by: Paulo Alcantara <palcantara@suse.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 02:24:03 +08:00
#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct statfs;
cifs: change signing routines to deal with smb_rqst structs We need a way to represent a call to be sent on the wire that does not require having all of the page data kmapped. Behold the smb_rqst struct. This new struct represents an array of kvecs immediately followed by an array of pages. Convert the signing routines to use these structs under the hood and turn the existing functions for this into wrappers around that. For now, we're just changing these functions to take different args. Later, we'll teach them how to deal with arrays of pages. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:34 +08:00
struct smb_rqst;
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
struct smb3_fs_context;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
*****************************************************************
* All Prototypes
*****************************************************************
*/
extern struct smb_hdr *cifs_buf_get(void);
extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
cifs: replace code with free_rsp_buf() The functionality provided by free_rsp_buf() is duplicated in a number of places. Replace these instances with a call to free_rsp_buf(). Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Shirish Pargaonkar <spargaonkar@suse.com> Signed-off-by: Steve French <smfrench@gmail.com>
2014-06-16 22:35:24 +08:00
extern void free_rsp_buf(int, void *);
cifs: turn smb_send into a wrapper around smb_sendv cifs: turn smb_send into a wrapper around smb_sendv Rename smb_send2 to smb_sendv to make it consistent with kernel naming conventions for functions that take a vector. There's no need to have 2 functions to handle sending SMB calls. Turn smb_send into a wrapper around smb_sendv. This also allows us to properly mark the socket as needing to be reconnected when there's a partial send from smb_send. Also, in practice we always use the address and noblocksnd flag that's attached to the TCP_Server_Info. There's no need to pass them in as separate args to smb_sendv. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-12-31 01:39:16 +08:00
extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
unsigned int /* length */);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern unsigned int _get_xid(void);
extern void _free_xid(unsigned int);
cifs: Standardize logging output Use pr_fmt to standardize all logging for fs/cifs. Some logging output had no CIFS: specific prefix. Now all output has one of three prefixes: o CIFS: o CIFS: VFS: o Root-CIFS: Miscellanea: o Convert printks to pr_<level> o Neaten macro definitions o Remove embedded CIFS: prefixes from formats o Convert "illegal" to "invalid" o Coalesce formats o Add missing '\n' format terminations o Consolidate multiple cifs_dbg continuations into single calls o More consistent use of upper case first word output logging o Multiline statement argument alignment and wrapping Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-15 13:42:53 +08:00
#define get_xid() \
({ \
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
unsigned int __xid = _get_xid(); \
cifs: Standardize logging output Use pr_fmt to standardize all logging for fs/cifs. Some logging output had no CIFS: specific prefix. Now all output has one of three prefixes: o CIFS: o CIFS: VFS: o Root-CIFS: Miscellanea: o Convert printks to pr_<level> o Neaten macro definitions o Remove embedded CIFS: prefixes from formats o Convert "illegal" to "invalid" o Coalesce formats o Add missing '\n' format terminations o Consolidate multiple cifs_dbg continuations into single calls o More consistent use of upper case first word output logging o Multiline statement argument alignment and wrapping Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-15 13:42:53 +08:00
cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
[CIFS] cifs: Rename cERROR and cFYI to cifs_dbg It's not obvious from reading the macro names that these macros are for debugging. Convert the names to a single more typical kernel style cifs_dbg macro. cERROR(1, ...) -> cifs_dbg(VFS, ...) cFYI(1, ...) -> cifs_dbg(FYI, ...) cFYI(DBG2, ...) -> cifs_dbg(NOISY, ...) Move the terminating format newline from the macro to the call site. Add CONFIG_CIFS_DEBUG function cifs_vfs_err to emit the "CIFS VFS: " prefix for VFS messages. Size is reduced ~ 1% when CONFIG_CIFS_DEBUG is set (default y) $ size fs/cifs/cifs.ko* text data bss dec hex filename 265245 2525 132 267902 4167e fs/cifs/cifs.ko.new 268359 2525 132 271016 422a8 fs/cifs/cifs.ko.old Other miscellaneous changes around these conversions: o Miscellaneous typo fixes o Add terminating \n's to almost all formats and remove them from the macros to be more kernel style like. A few formats previously had defective \n's o Remove unnecessary OOM messages as kmalloc() calls dump_stack o Coalesce formats to make grep easier, added missing spaces when coalescing formats o Use %s, __func__ instead of embedded function name o Removed unnecessary "cifs: " prefixes o Convert kzalloc with multiply to kcalloc o Remove unused cifswarn macro Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-05-05 11:12:25 +08:00
__func__, __xid, \
from_kuid(&init_user_ns, current_fsuid())); \
cifs: Standardize logging output Use pr_fmt to standardize all logging for fs/cifs. Some logging output had no CIFS: specific prefix. Now all output has one of three prefixes: o CIFS: o CIFS: VFS: o Root-CIFS: Miscellanea: o Convert printks to pr_<level> o Neaten macro definitions o Remove embedded CIFS: prefixes from formats o Convert "illegal" to "invalid" o Coalesce formats o Add missing '\n' format terminations o Consolidate multiple cifs_dbg continuations into single calls o More consistent use of upper case first word output logging o Multiline statement argument alignment and wrapping Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-15 13:42:53 +08:00
trace_smb3_enter(__xid, __func__); \
__xid; \
[CIFS] Neaten cERROR and cFYI macros, reduce text space Neaten cERROR and cFYI macros, reduce text space ~2.5K Convert '__FILE__ ": " fmt' to '"%s: " fmt', __FILE__' to save text space Surround macros with do {} while Add parentheses to macros Make statement expression macro from macro with assign Remove now unnecessary parentheses from cFYI and cERROR uses defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 156012 1760 148 157920 268e0 fs/cifs/built-in.o defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 153508 1760 148 155416 25f18 fs/cifs/built-in.o allyesconfig old: $ size fs/cifs/built-in.o text data bss dec hex filename 309138 3864 74824 387826 5eaf2 fs/cifs/built-in.o allyesconfig new $ size fs/cifs/built-in.o text data bss dec hex filename 305655 3864 74824 384343 5dd57 fs/cifs/built-in.o Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-04-21 11:50:45 +08:00
})
cifs: Standardize logging output Use pr_fmt to standardize all logging for fs/cifs. Some logging output had no CIFS: specific prefix. Now all output has one of three prefixes: o CIFS: o CIFS: VFS: o Root-CIFS: Miscellanea: o Convert printks to pr_<level> o Neaten macro definitions o Remove embedded CIFS: prefixes from formats o Convert "illegal" to "invalid" o Coalesce formats o Add missing '\n' format terminations o Consolidate multiple cifs_dbg continuations into single calls o More consistent use of upper case first word output logging o Multiline statement argument alignment and wrapping Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-15 13:42:53 +08:00
#define free_xid(curr_xid) \
do { \
_free_xid(curr_xid); \
cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
__func__, curr_xid, (int)rc); \
if (rc) \
smb3: add additional ftrace entry points for entry/exit to cifs.ko Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-19 15:28:53 +08:00
trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
cifs: Standardize logging output Use pr_fmt to standardize all logging for fs/cifs. Some logging output had no CIFS: specific prefix. Now all output has one of three prefixes: o CIFS: o CIFS: VFS: o Root-CIFS: Miscellanea: o Convert printks to pr_<level> o Neaten macro definitions o Remove embedded CIFS: prefixes from formats o Convert "illegal" to "invalid" o Coalesce formats o Add missing '\n' format terminations o Consolidate multiple cifs_dbg continuations into single calls o More consistent use of upper case first word output logging o Multiline statement argument alignment and wrapping Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-15 13:42:53 +08:00
else \
trace_smb3_exit_done(curr_xid, __func__); \
[CIFS] Neaten cERROR and cFYI macros, reduce text space Neaten cERROR and cFYI macros, reduce text space ~2.5K Convert '__FILE__ ": " fmt' to '"%s: " fmt', __FILE__' to save text space Surround macros with do {} while Add parentheses to macros Make statement expression macro from macro with assign Remove now unnecessary parentheses from cFYI and cERROR uses defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 156012 1760 148 157920 268e0 fs/cifs/built-in.o defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 153508 1760 148 155416 25f18 fs/cifs/built-in.o allyesconfig old: $ size fs/cifs/built-in.o text data bss dec hex filename 309138 3864 74824 387826 5eaf2 fs/cifs/built-in.o allyesconfig new $ size fs/cifs/built-in.o text data bss dec hex filename 305655 3864 74824 384343 5dd57 fs/cifs/built-in.o Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-04-21 11:50:45 +08:00
} while (0)
cifs: Add idmap key and related data structures and functions (try #17 repost) Define (global) data structures to store ids, uids and gids, to which a SID maps. There are two separate trees, one for SID/uid and another one for SID/gid. A new type of key, cifs_idmap_key_type, is used. Keys are instantiated and searched using credential of the root by overriding and restoring the credentials of the caller requesting the key. Id mapping functions are invoked under config option of cifs acl. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-04-28 12:34:35 +08:00
extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
cifs: Create dedicated keyring for spnego operations The session key is the default keyring set for request_key operations. This session key is revoked when the user owning the session logs out. Any long running daemon processes started by this session ends up with revoked session keyring which prevents these processes from using the request_key mechanism from obtaining the krb5 keys. The problem has been reported by a large number of autofs users. The problem is also seen with multiuser mounts where the share may be used by processes run by a user who has since logged out. A reproducer using automount is available on the Red Hat bz. The patch creates a new keyring which is used to cache cifs spnego upcalls. Red Hat bz: 1267754 Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reported-by: Scott Mayhew <smayhew@redhat.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <smfrench@gmail.com>
2016-05-18 07:20:13 +08:00
extern int init_cifs_spnego(void);
extern void exit_cifs_spnego(void);
cifs: allocate buffer in the caller of build_path_from_dentry() build_path_from_dentry() open-codes dentry_path_raw(). The reason we can't use dentry_path_raw() in there (and postprocess the result as needed) is that the callers of build_path_from_dentry() expect that the object to be freed on cleanup and the string to be used are at the same address. That's painful, since the path is naturally built end-to-beginning - we start at the leaf and go through the ancestors, accumulating the pathname. Life would be easier if we left the buffer allocation to callers. It wouldn't be exact-sized buffer, but none of the callers keep the result for long - it's always freed before the caller returns. So there's no need to do exact-sized allocation; better use __getname()/__putname(), same as we do for pathname arguments of syscalls. What's more, there's no need to do allocation under spinlocks, so GFP_ATOMIC is not needed. Next patch will replace the open-coded dentry_path_raw() (in build_path_from_dentry_optional_prefix()) with calling the real thing. This patch only introduces wrappers for allocating/freeing the buffers and switches to new calling conventions: build_path_from_dentry(dentry, buf) expects buf to be address of a page-sized object or NULL, return value is a pathname built inside that buffer on success, ERR_PTR(-ENOMEM) if buf is NULL and ERR_PTR(-ENAMETOOLONG) if the pathname won't fit into page. Note that we don't need to check for failure when allocating the buffer in the caller - build_path_from_dentry() will do the right thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-03-06 06:36:04 +08:00
extern const char *build_path_from_dentry(struct dentry *, void *);
cifs: use origin fullpath for automounts Use TCP_Server_Info::origin_fullpath instead of cifs_tcon::tree_name when building source paths for automounts as it will be useful for domain-based DFS referrals where the connections and referrals would get either re-used from the cache or re-created when chasing the dfs link. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-12-19 01:37:32 +08:00
char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
const char *tree, int tree_len,
bool prefix);
CIFS: add build_path_from_dentry_optional_prefix() this function does the same thing as add build_path_from_dentry() but takes a boolean parameter to decide whether or not to prefix the path with the tree name. we cannot rely on tcon->Flags & SMB_SHARE_IS_IN_DFS for SMB2 as smb2 code never sets tcon->Flags but it sets tcon->share_flags and it seems the SMB_SHARE_IS_IN_DFS has different semantics in SMB2: the prefix shouldn't be added everytime it was in SMB1. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-02-13 23:14:17 +08:00
extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
cifs: allocate buffer in the caller of build_path_from_dentry() build_path_from_dentry() open-codes dentry_path_raw(). The reason we can't use dentry_path_raw() in there (and postprocess the result as needed) is that the callers of build_path_from_dentry() expect that the object to be freed on cleanup and the string to be used are at the same address. That's painful, since the path is naturally built end-to-beginning - we start at the leaf and go through the ancestors, accumulating the pathname. Life would be easier if we left the buffer allocation to callers. It wouldn't be exact-sized buffer, but none of the callers keep the result for long - it's always freed before the caller returns. So there's no need to do exact-sized allocation; better use __getname()/__putname(), same as we do for pathname arguments of syscalls. What's more, there's no need to do allocation under spinlocks, so GFP_ATOMIC is not needed. Next patch will replace the open-coded dentry_path_raw() (in build_path_from_dentry_optional_prefix()) with calling the real thing. This patch only introduces wrappers for allocating/freeing the buffers and switches to new calling conventions: build_path_from_dentry(dentry, buf) expects buf to be address of a page-sized object or NULL, return value is a pathname built inside that buffer on success, ERR_PTR(-ENOMEM) if buf is NULL and ERR_PTR(-ENAMETOOLONG) if the pathname won't fit into page. Note that we don't need to check for failure when allocating the buffer in the caller - build_path_from_dentry() will do the right thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-03-06 06:36:04 +08:00
void *page, bool prefix);
static inline void *alloc_dentry_path(void)
{
return __getname();
}
static inline void free_dentry_path(void *page)
{
if (page)
__putname(page);
}
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
CIFS: Make use of common cifs_build_path_to_root for CIFS and SMB2 because the is no difference here. This also adds support of prefixpath mount option for SMB2. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-11-29 12:34:41 +08:00
struct cifs_sb_info *cifs_sb,
cifs_get_root shouldn't use path with tree name When a server returns the optional flag SMB_SHARE_IS_IN_DFS in response to a tree connect, cifs_build_path_to_root() will return a pathname which includes the hostname. This causes problems with cifs_get_root() which separates each component and does a lookup for each component of the path which in this case will incorrectly include looking up the hostname component as a path component. We encountered a problem with dfs shares hosted by a Netapp. When connecting to nodes pointed to by the DFS share. The tree connect for these nodes return SMB_SHARE_IS_IN_DFS resulting failures in lookup in cifs_get_root(). RH bz: 1373153 The patch was tested against a Netapp simulator and by a user using an actual Netapp server. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reported-by: Pierguido Lambri <plambri@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2016-12-15 15:01:19 +08:00
struct cifs_tcon *tcon,
int add_treename);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
cifs: get rid of mount options string parsing After switching to filesystem context support, we no longer need to handle mount options string when chasing dfs referrals. Now, we set the new values directly into smb3_fs_context. Start working on a separate source file to handle most dfs related mount functions as connect.c has already became too big. The remaining functions will be moved gradually in follow-up patches. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-05 05:41:27 +08:00
char *cifs_build_devname(char *nodename, const char *prepath);
cifs: remove useless DeleteMidQEntry() DeleteMidQEntry() was just a proxy for cifs_mid_q_entry_release(). - remove DeleteMidQEntry() - rename cifs_mid_q_entry_release() to release_mid() - rename kref_put() callback _cifs_mid_q_entry_release to __release_mid - rename AllocMidQEntry() to alloc_mid() - rename cifs_delete_mid() to delete_mid() Update callers to use new names. Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-08-05 22:47:38 +08:00
extern void delete_mid(struct mid_q_entry *mid);
extern void release_mid(struct mid_q_entry *mid);
CIFS: Make transport routines work with SMB2 Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2011-12-27 02:53:34 +08:00
extern void cifs_wake_up_task(struct mid_q_entry *mid);
CIFS: Decrypt and process small encrypted packets Allow to decrypt transformed packets, find a corresponding mid and process as usual further. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-11-18 07:24:46 +08:00
extern int cifs_handle_standard(struct TCP_Server_Info *server,
struct mid_q_entry *mid);
smb: client: fix parsing of source mount option Handle trailing and leading separators when parsing UNC and prefix paths in smb3_parse_devname(). Then, store the sanitised paths in smb3_fs_context::source. This fixes the following cases $ mount //srv/share// /mnt/1 -o ... $ cat /mnt/1/d0/f0 cat: /mnt/1/d0/f0: Invalid argument The -EINVAL was returned because the client sent SMB2_CREATE "\\d0\f0" rather than SMB2_CREATE "\d0\f0". $ mount //srv//share /mnt/1 -o ... mount: Invalid argument The -EINVAL was returned correctly although the client only realised it after sending a couple of bad requests rather than bailing out earlier when parsing mount options. Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
2023-06-28 08:24:47 +08:00
extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
char dirsep);
cifs: move cifs_parse_devname to fs_context.c Also rename the function from cifs_ to smb3_ Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-11-05 11:58:14 +08:00
extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
cifs: fix dfs domain referrals The new mount API requires additional changes to how DFS is handled. Additional testing of DFS uncovered problems with domain based DFS referrals (a follow on patch addresses DFS links) which this patch addresses. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-01-29 11:35:10 +08:00
extern int smb3_parse_opt(const char *options, const char *key, char **val);
cifs: fix sockaddr comparison in iface_cmp iface_cmp used to simply do a memcmp of the two provided struct sockaddrs. The comparison needs to do more based on the address family. Similar logic was already present in cifs_match_ipaddr. Doing something similar now. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-06-10 01:46:59 +08:00
extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
cifs: handle hostnames that resolve to same ip in failover In order to support reconnect to hostnames that resolve to same ip address, besides relying on the currently set hostname to match DFS targets, attempt to resolve the targets and then match their addresses with the reconnected server ip address. For instance, if we have two hostnames "FOO" and "BAR", and both resolve to the same ip address, we would be able to handle failover in DFS paths like \\FOO\dfs\link1 -> [ \BAZ\share2 (*), \BAR\share1 ] \\FOO\dfs\link2 -> [ \BAZ\share2 (*), \FOO\share1 ] so when "BAZ" is no longer accessible, link1 and link2 would get reconnected despite having different target hostnames. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-05-20 02:38:28 +08:00
extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
CIFS: Fix null pointer deref during read resp processing Currently during receiving a read response mid->resp_buf can be NULL when it is being passed to cifs_discard_remaining_data() from cifs_readv_discard(). Fix it by always passing server->smallbuf instead and initializing mid->resp_buf at the end of read response processing. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> CC: Stable <stable@vger.kernel.org> Acked-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-04-11 01:31:33 +08:00
extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
cifs: change cifs_call_async to use smb_rqst structs For now, none of the callers populate rq_pages. That will be done for writes in a later patch. While we're at it, change the prototype of setup_async_request not to need a return pointer argument. Just return the pointer to the mid_q_entry or an ERR_PTR. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:35 +08:00
extern int cifs_call_async(struct TCP_Server_Info *server,
struct smb_rqst *rqst,
mid_receive_t *receive, mid_callback_t *callback,
CIFS: Check for reconnects before sending async requests The reconnect might have happended after we obtained credits and before we acquired srv_mutex. Check for that under the mutex and retry an async operation if the reconnect is detected. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-01-16 07:52:29 +08:00
mid_handle_t *handle, void *cbdata, const int flags,
const struct cifs_credits *exist_credits);
cifs: multichannel: move channel selection in function This commit moves channel picking code in separate function. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-22 21:58:57 +08:00
extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
CIFS: Separate RFC1001 length processing for SMB2 read Allocate and initialize SMB2 read request without RFC1001 length field to directly call cifs_send_recv() rather than SendReceive2() in a read codepath. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-11-24 07:31:54 +08:00
extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
cifs: multichannel: move channel selection above transport layer Move the channel (TCP_Server_Info*) selection from the tranport layer to higher in the call stack so that: - credit handling is done with the server that will actually be used to send. * ->wait_mtu_credit * ->set_credits / set_credits * ->add_credits / add_credits * add_credits_and_wake_if - potential reconnection (smb2_reconnect) done when initializing a request is checked and done with the server that will actually be used to send. To do this: - remove the cifs_pick_channel() call out of compound_send_recv() - select channel and pass it down by adding a cifs_pick_channel(ses) call in: - smb311_posix_mkdir - SMB2_open - SMB2_ioctl - __SMB2_close - query_info - SMB2_change_notify - SMB2_flush - smb2_async_readv (if none provided in context param) - SMB2_read (if none provided in context param) - smb2_async_writev (if none provided in context param) - SMB2_write (if none provided in context param) - SMB2_query_directory - send_set_info - SMB2_oplock_break - SMB311_posix_qfs_info - SMB2_QFS_info - SMB2_QFS_attr - smb2_lockv - SMB2_lease_break - smb2_compound_op - smb2_set_ea - smb2_ioctl_query_info - smb2_query_dir_first - smb2_query_info_comound - smb2_query_symlink - cifs_writepages - cifs_write_from_iter - cifs_send_async_read - cifs_read - cifs_readpages - add TCP_Server_Info *server param argument to: - cifs_send_recv - compound_send_recv - SMB2_open_init - SMB2_query_info_init - SMB2_set_info_init - SMB2_close_init - SMB2_ioctl_init - smb2_iotcl_req_init - SMB2_query_directory_init - SMB2_notify_init - SMB2_flush_init - build_qfs_info_req - smb2_hdr_assemble - smb2_reconnect - fill_small_buf - smb2_plain_req_init - __smb2_plain_req_init The read/write codepath is different than the rest as it is using pages, io iterators and async calls. To deal with those we add a server pointer in the cifs_writedata/cifs_readdata/cifs_io_parms context struct and set it in: - cifs_writepages (wdata) - cifs_write_from_iter (wdata) - cifs_readpages (rdata) - cifs_send_async_read (rdata) The [rw]data->server pointer is eventually copied to cifs_io_parms->server to pass it down to SMB2_read/SMB2_write. If SMB2_read/SMB2_write is called from a different place that doesn't set the server field it will pick a channel. Some places do not pick a channel and just use ses->server or cifs_ses_server(ses). All cifs_ses_server(ses) calls are in codepaths involving negprot/sess.setup. - SMB2_negotiate (binding channel) - SMB2_sess_alloc_buffer (binding channel) - SMB2_echo (uses provided one) - SMB2_logoff (uses master) - SMB2_tdis (uses master) (list not exhaustive) Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-06-01 01:38:22 +08:00
struct TCP_Server_Info *server,
CIFS: Separate RFC1001 length processing for SMB2 read Allocate and initialize SMB2 read request without RFC1001 length field to directly call cifs_send_recv() rather than SendReceive2() in a read codepath. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-11-24 07:31:54 +08:00
struct smb_rqst *rqst, int *resp_buf_type,
const int flags, struct kvec *resp_iov);
cifs: add compound_send_recv() Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-08-01 07:26:13 +08:00
extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
cifs: multichannel: move channel selection above transport layer Move the channel (TCP_Server_Info*) selection from the tranport layer to higher in the call stack so that: - credit handling is done with the server that will actually be used to send. * ->wait_mtu_credit * ->set_credits / set_credits * ->add_credits / add_credits * add_credits_and_wake_if - potential reconnection (smb2_reconnect) done when initializing a request is checked and done with the server that will actually be used to send. To do this: - remove the cifs_pick_channel() call out of compound_send_recv() - select channel and pass it down by adding a cifs_pick_channel(ses) call in: - smb311_posix_mkdir - SMB2_open - SMB2_ioctl - __SMB2_close - query_info - SMB2_change_notify - SMB2_flush - smb2_async_readv (if none provided in context param) - SMB2_read (if none provided in context param) - smb2_async_writev (if none provided in context param) - SMB2_write (if none provided in context param) - SMB2_query_directory - send_set_info - SMB2_oplock_break - SMB311_posix_qfs_info - SMB2_QFS_info - SMB2_QFS_attr - smb2_lockv - SMB2_lease_break - smb2_compound_op - smb2_set_ea - smb2_ioctl_query_info - smb2_query_dir_first - smb2_query_info_comound - smb2_query_symlink - cifs_writepages - cifs_write_from_iter - cifs_send_async_read - cifs_read - cifs_readpages - add TCP_Server_Info *server param argument to: - cifs_send_recv - compound_send_recv - SMB2_open_init - SMB2_query_info_init - SMB2_set_info_init - SMB2_close_init - SMB2_ioctl_init - smb2_iotcl_req_init - SMB2_query_directory_init - SMB2_notify_init - SMB2_flush_init - build_qfs_info_req - smb2_hdr_assemble - smb2_reconnect - fill_small_buf - smb2_plain_req_init - __smb2_plain_req_init The read/write codepath is different than the rest as it is using pages, io iterators and async calls. To deal with those we add a server pointer in the cifs_writedata/cifs_readdata/cifs_io_parms context struct and set it in: - cifs_writepages (wdata) - cifs_write_from_iter (wdata) - cifs_readpages (rdata) - cifs_send_async_read (rdata) The [rw]data->server pointer is eventually copied to cifs_io_parms->server to pass it down to SMB2_read/SMB2_write. If SMB2_read/SMB2_write is called from a different place that doesn't set the server field it will pick a channel. Some places do not pick a channel and just use ses->server or cifs_ses_server(ses). All cifs_ses_server(ses) calls are in codepaths involving negprot/sess.setup. - SMB2_negotiate (binding channel) - SMB2_sess_alloc_buffer (binding channel) - SMB2_echo (uses provided one) - SMB2_logoff (uses master) - SMB2_tdis (uses master) (list not exhaustive) Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-06-01 01:38:22 +08:00
struct TCP_Server_Info *server,
cifs: add compound_send_recv() Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-08-01 07:26:13 +08:00
const int flags, const int num_rqst,
struct smb_rqst *rqst, int *resp_buf_type,
struct kvec *resp_iov);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct smb_hdr * /* input */ ,
struct smb_hdr * /* out */ ,
CIFS: Extend credit mechanism to process request type Split all requests to echos, oplocks and others - each group uses its own credit slot. This is indicated by new flags CIFS_ECHO_OP and CIFS_OBREAK_OP that are not used now for CIFS. This change is required to support SMB2 protocol because of different processing of these commands. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-23 20:14:34 +08:00
int * /* bytes returned */ , const int);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
CIFS: Separate protocol-specific code from transport routines that lets us use this functions for SMB2. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-24 02:28:02 +08:00
char *in_buf, int flags);
cifs: change cifs_call_async to use smb_rqst structs For now, none of the callers populate rq_pages. That will be done for writes in a later patch. While we're at it, change the prototype of setup_async_request not to need a return pointer argument. Just return the pointer to the mid_q_entry or an ERR_PTR. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:35 +08:00
extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
cifs: add server param As we get down to the transport layer, plenty of functions are passed the session pointer and assume the transport to use is ses->server. Instead we modify those functions to pass (ses, server) so that we can decouple the session from the server. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-09-20 12:08:34 +08:00
struct TCP_Server_Info *,
cifs: change cifs_call_async to use smb_rqst structs For now, none of the callers populate rq_pages. That will be done for writes in a later patch. While we're at it, change the prototype of setup_async_request not to need a return pointer argument. Just return the pointer to the mid_q_entry or an ERR_PTR. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:35 +08:00
struct smb_rqst *);
extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
struct smb_rqst *);
cifs: consolidate SendReceive response checks Further consolidate the SendReceive code by moving the checks run over the packet into a separate function that all the SendReceive variants can call. We can also eliminate the check for a receive_len that's too big or too small. cifs_demultiplex_thread already checks that and disconnects the socket if that occurs, while setting the midStatus to MALFORMED. It'll never call this code if that's the case. Finally do a little cleanup. Use "goto out" on errors so that the flow of code in the normal case is more evident. Also switch the logErr variable in map_smb_to_linux_error to a bool. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-20 04:22:52 +08:00
extern int cifs_check_receive(struct mid_q_entry *mid,
struct TCP_Server_Info *server, bool log_error);
CIFS: Use multicredits for SMB 2.1/3 writes If we negotiate SMB 2.1 and higher version of the protocol and a server supports large write buffer size, we need to consume 1 credit per 65536 bytes. So, we need to know how many credits we have and obtain the required number of them before constructing a writedata structure in writepages and iovec write. Reviewed-by: Shirish Pargaonkar <spargaonkar@suse.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2014-06-05 23:03:27 +08:00
extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
unsigned int size, unsigned int *num,
CIFS: Respect reconnect in MTU credits calculations Every time after a session reconnect we don't need to account for credits obtained in previous sessions. Introduce new struct cifs_credits which contains both credits value and reconnect instance of the time those credits were taken. Modify a routine that add credits back to handle the reconnect instance by assuming zero credits if the reconnect happened after the credits were obtained and before we decided to add them back due to some errors during sending. This patch fixes the MTU credits cases. The subsequent patch will handle non-MTU ones. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-01-17 03:12:41 +08:00
struct cifs_credits *credits);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
[CIFS] whitespace fixes This changeset brought to you ... by patchcheck.pl Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-29 03:44:13 +08:00
struct kvec *, int /* nvec to send */,
CIFS: Make SendReceive2() takes resp iov Now SendReceive2 frees the first iov and returns a response buffer in it that increases a code complexity. Simplify this by making a caller responsible for freeing request buffer itself and returning a response buffer in a separate iov. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-10-26 02:38:47 +08:00
int * /* type of buf returned */, const int flags,
struct kvec * /* resp vec */);
[CIFS] reduce checkpatch warnings Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-08 07:25:02 +08:00
extern int SendReceiveBlockingLock(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *ptcon,
cifs: fix various whitespace errors in headers Fix some extra spaces and a few comments that were unnecessarily split over two lines. These were some trivial issues pointed out by checkpatch) Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-12-10 06:55:51 +08:00
struct smb_hdr *in_buf,
[CIFS] reduce checkpatch warnings Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-08 07:25:02 +08:00
struct smb_hdr *out_buf,
int *bytes_returned);
cifs: cifs_ses_mark_for_reconnect should also update reconnect bits Recent restructuring of cifs_reconnect introduced a helper func named cifs_ses_mark_for_reconnect, which updates the state of tcp session for all the channels of a session for reconnect. However, this does not update the session state and chans_need_reconnect bitmask. This change fixes that. Also, cifs_mark_tcp_sess_for_reconnect should mark set the bitmask for all channels when the whole session is marked for reconnect. Fixed that here too. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 15:15:02 +08:00
void
cifs: use a different reconnect helper for non-cifsd threads The cifs_demultiplexer_thread should only call cifs_reconnect. If any other thread wants to trigger a reconnect, they can do so by updating the server tcpStatus to CifsNeedReconnect. The last patch attempted to use the same helper function for both types of threads, but that causes other issues with lock dependencies. This patch creates a new helper for non-cifsd threads, that will indicate to cifsd that the server needs reconnect. Fixes: 2a05137a0575 ("cifs: mark sessions for reconnection in helper function") Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-02-15 21:55:40 +08:00
cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
bool all_channels);
void
cifs: cifs_ses_mark_for_reconnect should also update reconnect bits Recent restructuring of cifs_reconnect introduced a helper func named cifs_ses_mark_for_reconnect, which updates the state of tcp session for all the channels of a session for reconnect. However, this does not update the session state and chans_need_reconnect bitmask. This change fixes that. Also, cifs_mark_tcp_sess_for_reconnect should mark set the bitmask for all channels when the whole session is marked for reconnect. Fixed that here too. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 15:15:02 +08:00
cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
bool mark_smb_session);
cifs: reconnect only the connection and not smb session where possible With the new per-channel bitmask for reconnect, we have an option to reconnect the tcp session associated with the channel without reconnecting the smb session. i.e. if there are still channels to operate on, we can continue to use the smb session and tcon. However, there are cases where it makes sense to reconnect the smb session even when there are active channels underneath. For example for SMB session expiry. With this patch, we'll have an option to do either, and use the correct option for specific cases. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 22:14:46 +08:00
extern int cifs_reconnect(struct TCP_Server_Info *server,
bool mark_smb_session);
Prepare for encryption support (first part). Add decryption and encryption key generation. Thanks to Metze for helping with this. Reviewed-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <steve.french@primarydata.com>
2015-12-19 03:05:30 +08:00
extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
CIFS: Separate protocol-specific code from demultiplex code Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-24 02:28:02 +08:00
extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
cifs: Add mount options for backup intent (try #6) Add mount options backupuid and backugid. It allows an authenticated user to access files with the intent to back them up including their ACLs, who may not have access permission but has "Backup files and directories user right" on them (by virtue of being part of the built-in group Backup Operators. When mount options backupuid is specified, cifs client restricts the use of backup intents to the user whose effective user id is specified along with the mount option. When mount options backupgid is specified, cifs client restricts the use of backup intents to the users whose effective user id belongs to the group id specified along with the mount option. If an authenticated user is not part of the built-in group Backup Operators at the server, access to such files is denied, even if allowed by the client. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-09-26 22:56:44 +08:00
extern bool backup_cred(struct cifs_sb_info *);
[CIFS] convert usage of implicit booleans to bool Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-29 08:06:05 +08:00
extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
CIFS: Implement cifs_strict_writev (try #4) If we don't have Exclusive oplock we write a data to the server. Also set invalidate_mapping flag on the inode if we wrote something to the server. Add cifs_iovec_write to let the client write iovec buffers through CIFSSMBWrite2. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-25 03:16:35 +08:00
extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
unsigned int bytes_written);
cifs: fix rename() by ensuring source handle opened with DELETE bit To rename a file in SMB2 we open it with the DELETE access and do a special SetInfo on it. If the handle is missing the DELETE bit the server will fail the SetInfo with STATUS_ACCESS_DENIED. We currently try to reuse any existing opened handle we have with cifs_get_writable_path(). That function looks for handles with WRITE access but doesn't check for DELETE, making rename() fail if it finds a handle to reuse. Simple reproducer below. To select handles with the DELETE bit, this patch adds a flag argument to cifs_get_writable_path() and find_writable_file() and the existing 'bool fsuid_only' argument is converted to a flag. The cifsFileInfo struct only stores the UNIX open mode but not the original SMB access flags. Since the DELETE bit is not mapped in that mode, this patch stores the access mask in cifs_fid on file open, which is accessible from cifsFileInfo. Simple reproducer: #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #define E(s) perror(s), exit(1) int main(int argc, char *argv[]) { int fd, ret; if (argc != 3) { fprintf(stderr, "Usage: %s A B\n" "create&open A in write mode, " "rename A to B, close A\n", argv[0]); return 0; } fd = openat(AT_FDCWD, argv[1], O_WRONLY|O_CREAT|O_SYNC, 0666); if (fd == -1) E("openat()"); ret = rename(argv[1], argv[2]); if (ret) E("rename()"); ret = close(fd); if (ret) E("close()"); return ret; } $ gcc -o bugrename bugrename.c $ ./bugrename /mnt/a /mnt/b rename(): Permission denied Fixes: 8de9e86c67ba ("cifs: create a helper to find a writeable handle by path name") CC: Stable <stable@vger.kernel.org> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
2020-02-21 18:19:06 +08:00
extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
CIFS: Return error code when getting file handle for writeback Now we just return NULL cifsFileInfo pointer in cases we didn't find or couldn't reopen a file. This hides errors from cifs_reopen_file() especially retryable errors which should be handled appropriately. Create new cifs_get_writable_file() routine that returns error codes from cifs_reopen_file() and use it in the writeback codepath. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-01-30 04:15:11 +08:00
extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
cifs: fix rename() by ensuring source handle opened with DELETE bit To rename a file in SMB2 we open it with the DELETE access and do a special SetInfo on it. If the handle is missing the DELETE bit the server will fail the SetInfo with STATUS_ACCESS_DENIED. We currently try to reuse any existing opened handle we have with cifs_get_writable_path(). That function looks for handles with WRITE access but doesn't check for DELETE, making rename() fail if it finds a handle to reuse. Simple reproducer below. To select handles with the DELETE bit, this patch adds a flag argument to cifs_get_writable_path() and find_writable_file() and the existing 'bool fsuid_only' argument is converted to a flag. The cifsFileInfo struct only stores the UNIX open mode but not the original SMB access flags. Since the DELETE bit is not mapped in that mode, this patch stores the access mask in cifs_fid on file open, which is accessible from cifsFileInfo. Simple reproducer: #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #define E(s) perror(s), exit(1) int main(int argc, char *argv[]) { int fd, ret; if (argc != 3) { fprintf(stderr, "Usage: %s A B\n" "create&open A in write mode, " "rename A to B, close A\n", argv[0]); return 0; } fd = openat(AT_FDCWD, argv[1], O_WRONLY|O_CREAT|O_SYNC, 0666); if (fd == -1) E("openat()"); ret = rename(argv[1], argv[2]); if (ret) E("rename()"); ret = close(fd); if (ret) E("close()"); return ret; } $ gcc -o bugrename bugrename.c $ ./bugrename /mnt/a /mnt/b rename(): Permission denied Fixes: 8de9e86c67ba ("cifs: create a helper to find a writeable handle by path name") CC: Stable <stable@vger.kernel.org> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
2020-02-21 18:19:06 +08:00
int flags,
CIFS: Return error code when getting file handle for writeback Now we just return NULL cifsFileInfo pointer in cases we didn't find or couldn't reopen a file. This hides errors from cifs_reopen_file() especially retryable errors which should be handled appropriately. Create new cifs_get_writable_file() routine that returns error codes from cifs_reopen_file() and use it in the writeback codepath. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-01-30 04:15:11 +08:00
struct cifsFileInfo **ret_file);
cifs: create a helper to find a writeable handle by path name rename() takes a path for old_file and in SMB2 we used to just create a compound for create(old_path)/rename/close(). If we already have a writable handle we can avoid the create() and close() altogether and just use the existing handle. For this situation, as we avoid doing the create() we also avoid triggering an oplock break for the existing handle. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-30 06:25:46 +08:00
extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
cifs: fix rename() by ensuring source handle opened with DELETE bit To rename a file in SMB2 we open it with the DELETE access and do a special SetInfo on it. If the handle is missing the DELETE bit the server will fail the SetInfo with STATUS_ACCESS_DENIED. We currently try to reuse any existing opened handle we have with cifs_get_writable_path(). That function looks for handles with WRITE access but doesn't check for DELETE, making rename() fail if it finds a handle to reuse. Simple reproducer below. To select handles with the DELETE bit, this patch adds a flag argument to cifs_get_writable_path() and find_writable_file() and the existing 'bool fsuid_only' argument is converted to a flag. The cifsFileInfo struct only stores the UNIX open mode but not the original SMB access flags. Since the DELETE bit is not mapped in that mode, this patch stores the access mask in cifs_fid on file open, which is accessible from cifsFileInfo. Simple reproducer: #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #define E(s) perror(s), exit(1) int main(int argc, char *argv[]) { int fd, ret; if (argc != 3) { fprintf(stderr, "Usage: %s A B\n" "create&open A in write mode, " "rename A to B, close A\n", argv[0]); return 0; } fd = openat(AT_FDCWD, argv[1], O_WRONLY|O_CREAT|O_SYNC, 0666); if (fd == -1) E("openat()"); ret = rename(argv[1], argv[2]); if (ret) E("rename()"); ret = close(fd); if (ret) E("close()"); return ret; } $ gcc -o bugrename bugrename.c $ ./bugrename /mnt/a /mnt/b rename(): Permission denied Fixes: 8de9e86c67ba ("cifs: create a helper to find a writeable handle by path name") CC: Stable <stable@vger.kernel.org> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
2020-02-21 18:19:06 +08:00
int flags,
cifs: create a helper to find a writeable handle by path name rename() takes a path for old_file and in SMB2 we used to just create a compound for create(old_path)/rename/close(). If we already have a writable handle we can avoid the create() and close() altogether and just use the existing handle. For this situation, as we avoid doing the create() we also avoid triggering an oplock break for the existing handle. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-30 06:25:46 +08:00
struct cifsFileInfo **ret_file);
cifs: have find_readable/writable_file filter by fsuid When we implement multiuser mounts, we'll need to filter filehandles by fsuid. Add a flag for multiuser mounts and code to filter by fsuid when it's set. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-09-30 07:51:11 +08:00
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
cifs: add a helper to find an existing readable handle to a file and convert smb2_query_path_info() to use it. This will eliminate the need for a SMB2_Create when we already have an open handle that can be used. This will also prevent a oplock break in case the other handle holds a lease. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-09-09 13:30:00 +08:00
extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
struct cifsFileInfo **ret_file);
cifs: remove unused server parameter from calc_smb_size() This parameter is unused by the called function Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-08-18 01:14:02 +08:00
extern unsigned int smbCalcSize(void *buf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern int decode_negTokenInit(unsigned char *security_blob, int length,
cifs: have decode_negTokenInit set flags in server struct ...rather than the secType. This allows us to get rid of the MSKerberos securityEnum. The client just makes a decision at upcall time. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-04-24 19:57:49 +08:00
struct TCP_Server_Info *server);
CIFS: Make cifs_convert_address() take a const src pointer and a length Make cifs_convert_address() take a const src pointer and a length so that all the strlen() calls in their can be cut out and to make it unnecessary to modify the src string. Also return the data length from dns_resolve_server_name_to_ip() so that a strlen() can be cut out of cifs_compose_mount_options() too. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-07-23 01:33:01 +08:00
extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
cifs: get rid of smb_vol->UNCip and smb_vol->port Passing this around as a string is contorted and painful. Instead, just convert these to a sockaddr as soon as possible, since that's how we're going to work with it later anyway. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-11-27 00:09:55 +08:00
extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
CIFS: Separate protocol-specific code from cifs_readv_receive code Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-24 02:28:03 +08:00
extern int map_smb_to_linux_error(char *buf, bool logErr);
cifs`: handle ERRBaduid for SMB1 If server returns ERRBaduid but does not reset transport connection, we'll keep sending command with a non-valid UID for the server as long as transport is healthy, without actually recovering. This have been observed on the field. This patch adds ERRBaduid handling so that we set CifsNeedReconnect. map_and_check_smb_error() can be modified to extend use cases. Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-07-03 17:29:32 +08:00
extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void header_assemble(struct smb_hdr *, char /* command */ ,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
const struct cifs_tcon *, int /* length of
[CIFS] Ensure that cifs multiplex ids do not collide. Signed-off-by: Steve French (sfrench@us.ibm.com)
2005-08-18 03:38:22 +08:00
fixed section (word count) in two byte units */);
[CIFS] SessionSetup cleanup part 2 The cifs session setup code has three cases, and a fourth for backlevel LANMAN2 style session setup needed to be added. This new session setup implmentation will eventually replace the other three and should be easier to read while fixing a few minor problems (not setting the LARGE READ/WRITEX flags when NTLMSSP was negotiated for example) and adding support for NTLMv2 (which will be added with the next patch. In the meantime, this code is marked in an CONFIG_CIFS_EXPERIMENTAL block and will not be turned on by default until it is tested against more server types. Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-02-14 09:36:20 +08:00
extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_ses *ses,
[CIFS] whitespace/formatting fixes This should be the last big batch of whitespace/formatting fixes. checkpatch warnings for the cifs directory are down about 90% and many of the remaining ones are harder to remove or make the code harder to read. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-13 08:33:32 +08:00
void **request_buf);
move sectype to the cifs_ses instead of TCP_Server_Info Now that we track what sort of NEGOTIATE response was received, stop mandating that every session on a socket use the same type of auth. Push that decision out into the session setup code, and make the sectype a per-session property. This should allow us to mix multiple sectypes on a socket as long as they are compatible with the NEGOTIATE response. With this too, we can now eliminate the ses->secFlg field since that info is redundant and harder to work with than a securityEnum. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2013-06-13 08:52:14 +08:00
extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
enum securityEnum requested);
CIFS: Move protocol specific session setup/logoff code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:54:49 +08:00
extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
cifs: use the chans_need_reconnect bitmap for reconnect status We use the concept of "binding" when one of the secondary channel is in the process of connecting/reconnecting to the server. Till this binding process completes, and the channel is bound to an existing session, we redirect traffic from other established channels on the binding channel, effectively blocking all traffic till individual channels get reconnected. With my last set of commits, we can get rid of this binding serialization. We now have a bitmap of connection states for each channel. We will use this bitmap instead for tracking channel status. Having a bitmap also now enables us to keep the session alive, as long as even a single channel underneath is alive. Unfortunately, this also meant that we need to supply the tcp connection info for the channel during all negotiate and session setup functions. These changes have resulted in a slightly bigger code churn. However, I expect perf and robustness improvements in the mchan scenario after this change. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 21:54:16 +08:00
struct TCP_Server_Info *server,
CIFS: Move protocol specific session setup/logoff code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:54:49 +08:00
const struct nls_table *nls_cp);
cifs: use timespec64 internally In cifs, the timestamps are stored in memory in the cifs_fattr structure, which uses the deprecated 'timespec' structure. Now that the VFS code has moved on to 'timespec64', the next step is to change over the fattr as well. This also makes 32-bit and 64-bit systems behave the same way, and no longer overflow the 32-bit time_t in year 2038. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Paulo Alcantara <palcantara@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-06-19 23:27:58 +08:00
extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec64);
extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
cifs: make cnvrtDosUnixTm take a little-endian args and an offset The callers primarily end up converting the args from le anyway. Also, most of the callers end up needing to add an offset to the result. The exception to these rules is cnvrtDosCifsTm, but there are no callers of that function, so we might as well remove it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-05-27 21:37:33 +08:00
int offset);
cifs: make cifs_set_oplock_level() take a cifsInodeInfo pointer All the callers already have a pointer to struct cifsInodeInfo. Use it. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-11-03 15:58:57 +08:00
extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
cifs: Wait for writebacks to complete before attempting write. Problem reported in Red Hat bz 1040329 for strict writes where we cache only when we hold oplock and write direct to the server when we don't. When we receive an oplock break, we first change the oplock value for the inode in cifsInodeInfo->oplock to indicate that we no longer hold the oplock before we enqueue a task to flush changes to the backing device. Once we have completed flushing the changes, we return the oplock to the server. There are 2 ways here where we can have data corruption 1) While we flush changes to the backing device as part of the oplock break, we can have processes write to the file. These writes check for the oplock, find none and attempt to write directly to the server. These direct writes made while we are flushing from cache could be overwritten by data being flushed from the cache causing data corruption. 2) While a thread runs in cifs_strict_writev, the machine could receive and process an oplock break after the thread has checked the oplock and found that it allows us to cache and before we have made changes to the cache. In that case, we end up with a dirty page in cache when we shouldn't have any. This will be flushed later and will overwrite all subsequent writes to the part of the file represented by this page. Before making any writes to the server, we need to confirm that we are not in the process of flushing data to the server and if we are, we should wait until the process is complete before we attempt the write. We should also wait for existing writes to complete before we process an oplock break request which changes oplock values. We add a version specific downgrade_oplock() operation to allow for differences in the oplock values set for the different smb versions. Cc: stable@vger.kernel.org Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2014-03-12 00:11:47 +08:00
extern int cifs_get_writer(struct cifsInodeInfo *cinode);
extern void cifs_put_writer(struct cifsInodeInfo *cinode);
extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
CIFS: Move brlock code to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
2012-09-19 21:22:43 +08:00
extern int cifs_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
[CIFS] Legacy time handling for Win9x and OS/2 part 1 Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-09-28 11:35:57 +08:00
cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs There's a deadlock that is possible and can easily be seen with a test where multiple readers open/read/close of the same file and a disruption occurs causing reconnect. The deadlock is due a reader thread inside cifs_strict_readv calling down_read and obtaining lock_sem, and then after reconnect inside cifs_reopen_file calling down_read a second time. If in between the two down_read calls, a down_write comes from another process, deadlock occurs. CPU0 CPU1 ---- ---- cifs_strict_readv() down_read(&cifsi->lock_sem); _cifsFileInfo_put OR cifs_new_fileinfo down_write(&cifsi->lock_sem); cifs_reopen_file() down_read(&cifsi->lock_sem); Fix the above by changing all down_write(lock_sem) calls to down_write_trylock(lock_sem)/msleep() loop, which in turn makes the second down_read call benign since it will never block behind the writer while holding lock_sem. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Suggested-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed--by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2019-10-23 17:02:33 +08:00
extern void cifs_down_write(struct rw_semaphore *sem);
cifs: improve symlink handling for smb2+ When creating inode for symlink, the client used to send below requests to fill it in: * create+query_info+close (STATUS_STOPPED_ON_SYMLINK) * create(+reparse_flag)+query_info+close (set file attrs) * create+ioctl(get_reparse)+close (query reparse tag) and then for every access to the symlink dentry, the ->link() method would send another: * create+ioctl(get_reparse)+close (parse symlink) So, in order to improve: (i) Get rid of unnecessary roundtrips and then resolve symlinks as follows: * create+query_info+close (STATUS_STOPPED_ON_SYMLINK + parse symlink + get reparse tag) * create(+reparse_flag)+query_info+close (set file attrs) (ii) Set the resolved symlink target directly in inode->i_link and use simple_get_link() for ->link() to simply return it. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-04 05:43:50 +08:00
struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
struct tcon_link *tlink, __u32 oplock,
const char *symlink_target);
cifs: constify pathname arguments in a bunch of helpers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-03-19 03:44:05 +08:00
extern int cifs_posix_open(const char *full_path, struct inode **inode,
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
struct super_block *sb, int mode,
unsigned int f_flags, __u32 *oplock, __u16 *netfid,
unsigned int xid);
cifs: fix noserverino handling when unix extensions are enabled The uniqueid field sent by the server when unix extensions are enabled is currently used sometimes when it shouldn't be. The readdir codepath is correct, but most others are not. Fix it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-05-17 19:18:58 +08:00
void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
cifs: add new cifs_iget function and convert unix codepath to use it cifs: add new cifs_iget function and convert unix codepath to use it In order to unify some codepaths, introduce a common cifs_fattr struct for storing inode attributes. The different codepaths (unix, legacy, normal, etc...) can fill out this struct with inode info. It can then be passed as an arg to a common set of routines to get and update inodes. Add a new cifs_iget function that uses iget5_locked to identify inodes. This will compare inodes based on the uniqueid value in a cifs_fattr struct. Rather than filling out an already-created inode, have cifs_get_inode_info_unix instead fill out cifs_fattr and hand that off to cifs_iget. cifs_iget can then properly look for hardlinked inodes. On the readdir side, add a new cifs_readdir_lookup function that spawns populated dentries. Redefine FILE_UNIX_INFO so that it's basically a FILE_UNIX_BASIC_INFO that has a few fields wrapped around it. This allows us to more easily use the same function for filling out the fattr as the non-readdir codepath. With this, we should then have proper hardlink detection and can eventually get rid of some nasty CIFS-specific hacks for handing them. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 12:56:52 +08:00
extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
FILE_UNIX_BASIC_INFO *info,
struct cifs_sb_info *cifs_sb);
cifs: obtain file access during backup intent lookup (resend) Rebased and resending the patch. Path based queries can fail for lack of access, especially during lookup during open. open itself would actually succeed becasue of back up intent bit but queries (either path or file handle based) do not have a means to specifiy backup intent bit. So query the file info during lookup using trans2 / findfirst / file_id_full_dir_info to obtain file info as well as file_id/inode value. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-29 01:21:14 +08:00
extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
struct cifs_sb_info *);
cifs: have cifs_fattr_to_inode() refuse to change type on live inode ... instead of trying to do that in the callers (and missing some, at that) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2021-02-11 10:23:04 +08:00
extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
cifs: add new cifs_iget function and convert unix codepath to use it cifs: add new cifs_iget function and convert unix codepath to use it In order to unify some codepaths, introduce a common cifs_fattr struct for storing inode attributes. The different codepaths (unix, legacy, normal, etc...) can fill out this struct with inode info. It can then be passed as an arg to a common set of routines to get and update inodes. Add a new cifs_iget function that uses iget5_locked to identify inodes. This will compare inodes based on the uniqueid value in a cifs_fattr struct. Rather than filling out an already-created inode, have cifs_get_inode_info_unix instead fill out cifs_fattr and hand that off to cifs_iget. cifs_iget can then properly look for hardlinked inodes. On the readdir side, add a new cifs_readdir_lookup function that spawns populated dentries. Redefine FILE_UNIX_INFO so that it's basically a FILE_UNIX_BASIC_INFO that has a few fields wrapped around it. This allows us to more easily use the same function for filling out the fattr as the non-readdir codepath. With this, we should then have proper hardlink detection and can eventually get rid of some nasty CIFS-specific hacks for handing them. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 12:56:52 +08:00
extern struct inode *cifs_iget(struct super_block *sb,
struct cifs_fattr *fattr);
cifs: improve symlink handling for smb2+ When creating inode for symlink, the client used to send below requests to fill it in: * create+query_info+close (STATUS_STOPPED_ON_SYMLINK) * create(+reparse_flag)+query_info+close (set file attrs) * create+ioctl(get_reparse)+close (query reparse tag) and then for every access to the symlink dentry, the ->link() method would send another: * create+ioctl(get_reparse)+close (parse symlink) So, in order to improve: (i) Get rid of unnecessary roundtrips and then resolve symlinks as follows: * create+query_info+close (STATUS_STOPPED_ON_SYMLINK + parse symlink + get reparse tag) * create(+reparse_flag)+query_info+close (set file attrs) (ii) Set the resolved symlink target directly in inode->i_link and use simple_get_link() for ->link() to simply return it. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-04 05:43:50 +08:00
int cifs_get_inode_info(struct inode **inode, const char *full_path,
struct cifs_open_info_data *data, struct super_block *sb, int xid,
const struct cifs_fid *fid);
smb: client: parse reparse point flag in create response Check for reparse point flag on query info calls as specified in MS-SMB2 2.2.14. Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-08-17 23:34:06 +08:00
bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr,
u32 tag);
SMB311: Add support for query info using posix extensions (level 100) Adds support for better query info on dentry revalidation (using the SMB3.1.1 POSIX extensions level 100). Followon patch will add support for translating the UID/GID from the SID and also will add support for using the posix query info on lookup. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2020-06-12 08:25:47 +08:00
extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
struct super_block *sb, unsigned int xid);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
struct super_block *sb, unsigned int xid);
CIFS: Move unlink code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:25 +08:00
extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
cifs: constify pathname arguments in a bunch of helpers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-03-19 03:44:05 +08:00
unsigned int xid, const char *full_path, __u32 dosattr);
CIFS: Move unlink code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:25 +08:00
extern int cifs_rename_pending_delete(const char *full_path,
struct dentry *dentry,
const unsigned int xid);
SMB3.1.1: Fix ids returned in POSIX query dir We were setting the uid/gid to the default in each dir entry in the parsing of the POSIX query dir response, rather than attempting to map the user and group SIDs returned by the server to well known SIDs (or upcall if not found). CC: Stable <stable@vger.kernel.org> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-10-20 15:02:02 +08:00
extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
struct cifs_fattr *fattr, uint sidtype);
cifs: Percolate error up to the caller during get/set acls [try #4] Modify get/set_cifs_acl* calls to reutrn error code and percolate the error code up to the caller. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-11-10 21:50:35 +08:00
extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
cifs: convert cifs_get_inode_info and non-posix readdir to use cifs_iget cifs: convert cifs_get_inode_info and non-posix readdir to use cifs_iget Rather than allocating an inode and filling it out, have cifs_get_inode_info fill out a cifs_fattr and call cifs_iget. This means a pretty hefty reorganization of cifs_get_inode_info. For the readdir codepath, add a couple of new functions for filling out cifs_fattr's from different FindFile response infolevels. Finally, remove cifs_new_inode since there are no more callers. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-07-09 13:46:37 +08:00
struct cifs_fattr *fattr, struct inode *inode,
cifs: get mode bits from special sid on stat When mounting with "modefromsid" retrieve mode bits from special SID (S-1-5-88-3) on stat. Subsequent patch will fix setattr (chmod) to save mode bits in S-1-5-88-3-<mode> Note that when an ACE matching S-1-5-88-3 is not found, we default the mode to an approximation based on the owner, group and everyone permissions (as with the "cifsacl" mount option). See See e.g. https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh509017(v=ws.10) Signed-off-by: Steve French <stfrench@microsoft.com>
2019-07-19 14:30:07 +08:00
bool get_mode_from_special_sid,
[CIFS] Fix cifsacl mounts over smb2 to not call cifs When mounting with smb2/smb3 (e.g. vers=2.1) and cifsacl mount option, it was trying to get the mode by querying the acl over the cifs rather than smb2 protocol. This patch makes that protocol independent and makes cifsacl smb2 mounts return a more intuitive operation not supported error (until we add a worker function for smb2_get_acl). Note that a previous patch fixed getxattr/setxattr for the CIFSACL xattr which would unconditionally call cifs_get_acl and cifs_set_acl (even when mounted smb2). I made those protocol independent last week (new protocol version operations "get_acl" and "set_acl" but did not add an smb2_get_acl and smb2_set_acl yet so those now simply return EOPNOTSUPP which at least is better than sending cifs requests on smb2 mount) The previous patches did not fix the one remaining case though ie mounting with "cifsacl" when getting mode from acl would unconditionally end up calling "cifs_get_acl_from_fid" even for smb2 - so made that protocol independent but to make that protocol independent had to make sure that the callers were passing the protocol independent handle structure (cifs_fid) instead of cifs specific _u16 network file handle (ie cifs_fid instead of cifs_fid->fid) Now mount with smb2 and cifsacl mount options will return EOPNOTSUP (instead of timing out) and a future patch will add smb2 operations (e.g. get_smb2_acl) to enable this. Signed-off-by: Steve French <smfrench@gmail.com>
2014-02-11 04:08:16 +08:00
const char *path, const struct cifs_fid *pfid);
cifs: Fix unix perm bits to cifsacl conversion for "other" bits. With the "cifsacl" mount option, the mode bits set on the file/dir is converted to corresponding ACEs in DACL. However, only the ALLOWED ACEs were being set for "owner" and "group" SIDs. Since owner is a subset of group, and group is a subset of everyone/world SID, in order to properly emulate unix perm groups, we need to add DENIED ACEs. If we don't do that, "owner" and "group" SIDs could get more access rights than they should. Which is what was happening. This fixes it. We try to keep the "preferred" order of ACEs, i.e. DENYs followed by ALLOWs. However, for a small subset of cases we cannot maintain the preferred order. In that case, we'll end up with the DENY ACE for group after the ALLOW for the owner. If owner SID == group SID, use the more restrictive among the two perm bits and convert them to ACEs. Also, for reverse mapping, i.e. to convert ACL to unix perm bits, for the "others" bits, we needed to add the masked bits of the owner and group masks to others mask. Updated version of patch fixes a problem noted by the kernel test robot. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-17 18:23:12 +08:00
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
kuid_t uid, kgid_t gid);
cifs: Handle extended attribute name cifs_acl to generate cifs acl blob (try #4) Add extended attribute name system.cifs_acl Get/generate cifs/ntfs acl blob and hand over to the invoker however it wants to parse/process it under experimental configurable option CIFS_ACL. Do not get CIFS/NTFS ACL for xattr for attribute system.posix_acl_access Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-11-28 01:37:54 +08:00
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
SMB3: Add support for getting and setting SACLs Add SYSTEM_SECURITY access flag and use with smb2 when opening files for getting/setting SACLs. Add "system.cifs_ntsd_full" extended attribute to allow user-space access to the functionality. Avoid multiple server calls when setting owner, DACL, and SACL. Signed-off-by: Boris Protopopov <pboris@amazon.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-19 01:30:12 +08:00
const char *, u32 *, u32);
[CIFS] Fix cifsacl mounts over smb2 to not call cifs When mounting with smb2/smb3 (e.g. vers=2.1) and cifsacl mount option, it was trying to get the mode by querying the acl over the cifs rather than smb2 protocol. This patch makes that protocol independent and makes cifsacl smb2 mounts return a more intuitive operation not supported error (until we add a worker function for smb2_get_acl). Note that a previous patch fixed getxattr/setxattr for the CIFSACL xattr which would unconditionally call cifs_get_acl and cifs_set_acl (even when mounted smb2). I made those protocol independent last week (new protocol version operations "get_acl" and "set_acl" but did not add an smb2_get_acl and smb2_set_acl yet so those now simply return EOPNOTSUPP which at least is better than sending cifs requests on smb2 mount) The previous patches did not fix the one remaining case though ie mounting with "cifsacl" when getting mode from acl would unconditionally end up calling "cifs_get_acl_from_fid" even for smb2 - so made that protocol independent but to make that protocol independent had to make sure that the callers were passing the protocol independent handle structure (cifs_fid) instead of cifs specific _u16 network file handle (ie cifs_fid instead of cifs_fid->fid) Now mount with smb2 and cifsacl mount options will return EOPNOTSUP (instead of timing out) and a future patch will add smb2 operations (e.g. get_smb2_acl) to enable this. Signed-off-by: Steve French <smfrench@gmail.com>
2014-02-11 04:08:16 +08:00
extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
SMB3: Add support for getting and setting SACLs Add SYSTEM_SECURITY access flag and use with smb2 when opening files for getting/setting SACLs. Add "system.cifs_ntsd_full" extended attribute to allow user-space access to the functionality. Avoid multiple server calls when setting owner, DACL, and SACL. Signed-off-by: Boris Protopopov <pboris@amazon.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-19 01:30:12 +08:00
const struct cifs_fid *, u32 *, u32);
fs: port ->get_acl() to pass mnt_idmap Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2023-01-13 19:49:19 +08:00
extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
cifs: implement get acl method The current way of setting and getting posix acls through the generic xattr interface is error prone and type unsafe. The vfs needs to interpret and fixup posix acls before storing or reporting it to userspace. Various hacks exist to make this work. The code is hard to understand and difficult to maintain in it's current form. Instead of making this work by hacking posix acls through xattr handlers we are building a dedicated posix acl api around the get and set inode operations. This removes a lot of hackiness and makes the codepaths easier to maintain. A lot of background can be found in [1]. In order to build a type safe posix api around get and set acl we need all filesystem to implement get and set acl. So far cifs wasn't able to implement get and set acl inode operations because it needs access to the dentry. Now that we extended the set acl inode operation to take a dentry argument and added a new get acl inode operation that takes a dentry argument we can let cifs implement get and set acl inode operations. This is mostly a copy and paste of the codepaths currently used in cifs' posix acl xattr handler. After we have fully implemented the posix acl api and switched the vfs over to it, the cifs specific posix acl xattr handler and associated code will be removed and the code duplication will go away. Note, until the vfs has been switched to the new posix acl api this patch is a non-functional change. Link: https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org [1] Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2022-09-22 23:17:02 +08:00
struct dentry *dentry, int type);
fs: port ->set_acl() to pass mnt_idmap Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2023-01-13 19:49:20 +08:00
extern int cifs_set_acl(struct mnt_idmap *idmap,
cifs: implement set acl method The current way of setting and getting posix acls through the generic xattr interface is error prone and type unsafe. The vfs needs to interpret and fixup posix acls before storing or reporting it to userspace. Various hacks exist to make this work. The code is hard to understand and difficult to maintain in it's current form. Instead of making this work by hacking posix acls through xattr handlers we are building a dedicated posix acl api around the get and set inode operations. This removes a lot of hackiness and makes the codepaths easier to maintain. A lot of background can be found in [1]. In order to build a type safe posix api around get and set acl we need all filesystem to implement get and set acl. So far cifs wasn't able to implement get and set acl inode operations because it needs access to the dentry. Now that we extended the set acl inode operation to take a dentry argument and added a new get acl inode operation that takes a dentry argument we can let cifs implement get and set acl inode operations. This is mostly a copy and paste of the codepaths currently used in cifs' posix acl xattr handler. After we have fully implemented the posix acl api and switched the vfs over to it, the cifs specific posix acl xattr handler and associated code will be removed and the code duplication will go away. Note, until the vfs has been switched to the new posix acl api this patch is a non-functional change. Link: https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org [1] Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2022-09-22 23:17:03 +08:00
struct dentry *dentry, struct posix_acl *acl, int type);
[CIFS] Allow to set extended attribute cifs_acl (try #2) Allow setting cifs_acl on the server. Pass on to the server the ACL blob generated by an application. cifs is just a pass-through, it does not monitor or inspect the contents of the blob, server decides whether to enforce/apply the ACL blob composed by an application. If setting of ACL is succeessful, mark the inode for revalidation. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-04-20 02:27:10 +08:00
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
cifs: Call id to SID mapping functions to change owner/group (try #4 repost) Now build security descriptor to change either owner or group at the server. Initially security descriptor was built to change only (D)ACL, that functionality has been extended. When either an Owner or a Group of a file object at the server is changed, rest of security descriptor remains same (DACL etc.). To set security descriptor, it is necessary to open that file with permission bits of either WRITE_DAC if DACL is being modified or WRITE_OWNER (Take Ownership) if Owner or Group is being changed. It is the server that decides whether a set security descriptor with either owner or group change succeeds or not. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-13 23:26:03 +08:00
const char *, int);
smb3: fix default permissions on new files when mounting with modefromsid When mounting with "modefromsid" mount parm most servers will require that some default permissions are given to users in the ACL on newly created files, files created with the new 'sd context' - when passing in an sd context on create, permissions are not inherited from the parent directory, so in addition to the ACE with the special SID which contains the mode, we also must pass in an ACE allowing users to access the file (GENERIC_ALL for authenticated users seemed like a reasonable default, although later we could allow a mount option or config switch to make it GENERIC_ALL for EVERYONE special sid). CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-By: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2020-01-17 09:55:33 +08:00
extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
smb3: fix mode passed in on create for modetosid mount option When using the special SID to store the mode bits in an ACE (See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx) which is enabled with mount parm "modefromsid" we were not passing in the mode via SMB3 create (although chmod was enabled). SMB3 create allows a security descriptor context to be passed in (which is more atomic and thus preferable to setting the mode bits after create via a setinfo). This patch enables setting the mode bits on create when using modefromsid mount option. In addition it fixes an endian error in the definition of the Control field flags in the SMB3 security descriptor. It also makes the ACE type of the special SID better match the documentation (and behavior of servers which use this to store mode bits in SMB3 ACLs). Signed-off-by: Steve French <stfrench@microsoft.com> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2019-12-06 16:02:38 +08:00
extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
smb3: allow uid and gid owners to be set on create with idsfromsid mount option Currently idsfromsid mount option allows querying owner information from the special sids used to represent POSIX uids and gids but needed changes to populate the security descriptor context with the owner information when idsfromsid mount option was used. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2020-06-12 22:25:21 +08:00
extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
[CIFS] Don't request too much permission when reading an ACL We were requesting GENERIC_READ but that fails when we do not have read permission on the file (even if we could read the ACL). Also move the dump access control entry code into debug ifdef. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-31 12:54:42 +08:00
cifs: add cifs_async_readv ...which will allow cifs to do an asynchronous read call to the server. The caller will allocate and set up cifs_readdata for each READ_AND_X call that should be issued on the wire. The pages passed in are added to the pagecache, but not placed on the LRU list yet (as we need the page->lru to keep the pages on the list in the readdata). When cifsd identifies the mid, it will see that there is a special receive handler for the call, and use that to receive the rest of the frame. cifs_readv_receive will then marshal up a kvec array with kmapped pages from the pagecache, which eliminates one copy of the data. Once the data is received, the pages are added to the LRU list, set uptodate, and unlocked. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-10-20 03:30:07 +08:00
extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
cifs: don't bother with kmap on read_pages side just do ITER_BVEC recvmsg Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-10 08:54:50 +08:00
unsigned int to_read);
cifs: use discard iterator to discard unneeded network data more efficiently The iterator, ITER_DISCARD, that can only be used in READ mode and just discards any data copied to it, was added to allow a network filesystem to discard any unwanted data sent by a server. Convert cifs_discard_from_socket() to use this. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-04 14:15:21 +08:00
extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
size_t to_read);
cifs: don't bother with kmap on read_pages side just do ITER_BVEC recvmsg Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-10 08:54:50 +08:00
extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
CIFS: Use offset when reading pages With offset defined in rdata, transport functions need to look at this offset when reading data into the correct places in pages. Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-31 03:47:55 +08:00
struct page *page,
unsigned int page_offset,
unsigned int to_read);
cifs: Add a function to read into an iter from a socket Add a helper function to read data from a socket into the given iterator. Signed-off-by: David Howells <dhowells@redhat.com> cc: Steve French <sfrench@samba.org> cc: Shyam Prasad N <nspmangalore@gmail.com> cc: Rohith Surabattula <rohiths.msft@gmail.com> cc: Jeff Layton <jlayton@kernel.org> cc: linux-cifs@vger.kernel.org Link: https://lore.kernel.org/r/164928617874.457102.10021662143234315566.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165211419563.3154751.18431990381145195050.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165348879662.2106726.16881134187242702351.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165364826398.3334034.12541600783145647319.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/166126395495.708021.12328677373159554478.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/166697258876.61150.3530237818849429372.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/166732031039.3186319.10691316510079412635.stgit@warthog.procyon.org.uk/ # rfc Signed-off-by: Steve French <stfrench@microsoft.com>
2022-04-07 04:09:08 +08:00
int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
struct iov_iter *iter,
unsigned int to_read);
cifs: remove ctx argument from cifs_setup_cifs_sb Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-14 14:40:24 +08:00
extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
cifs: share dfs connections and supers When matching DFS superblocks we can't rely on either the server's address or tcon's UNC name from mount(2) as the existing servers and tcons might be connected to somewhere else. Instead, check if superblock is dfs, and if so, match its original source pathname with the new mount's source pathname. For DFS connections, instead of checking server's address, match its referral path as it could be connected to different targets. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-11-18 00:23:49 +08:00
void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
cifs: split out ses and tcon retrieval from mount_get_conns() Introduce and export two helpers for getting session and tcon during mount(2). Those will be used by dfs when retrieving sessions and tcons separately while chasing referrals. Besides, export cifs_mount_ctx structure as it will be used by dfs code as well. No functional changes. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-12 05:16:07 +08:00
int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
cifs: share dfs connections and supers When matching DFS superblocks we can't rely on either the server's address or tcon's UNC name from mount(2) as the existing servers and tcons might be connected to somewhere else. Instead, check if superblock is dfs, and if so, match its original source pathname with the new mount's source pathname. For DFS connections, instead of checking server's address, match its referral path as it could be connected to different targets. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-11-18 00:23:49 +08:00
int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
cifs: split out ses and tcon retrieval from mount_get_conns() Introduce and export two helpers for getting session and tcon during mount(2). Those will be used by dfs when retrieving sessions and tcons separately while chasing referrals. Besides, export cifs_mount_ctx structure as it will be used by dfs code as well. No functional changes. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-12 05:16:07 +08:00
int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
CIFS: Simplify mount code for further shared sb capability Reorganize code to get mount option at first and when get a superblock. This lets us use shared superblock model further for equal mounts. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-05 17:55:12 +08:00
extern int cifs_match_super(struct super_block *, void *);
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
sanitize cifs_umount() prototype a) superblock argument is unused b) it always returns 0 Acked-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-17 21:27:16 +08:00
extern void cifs_umount(struct cifs_sb_info *);
CIFS: Process reconnects for SMB2 shares Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2011-12-27 20:23:34 +08:00
extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
fs/cifs: reopen persistent handles on reconnect Continuous Availability features like persistent handles require that clients reconnect their open files, not just the sessions, soon after the network connection comes back up, otherwise the server will throw away the state (byte range locks, leases, deny modes) on those handles after a timeout. Add code to reconnect handles when use_persistent set (e.g. Continuous Availability shares) after tree reconnect. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Germano Percossi <germano.percossi@citrix.com> Signed-off-by: Steve French <smfrench@gmail.com>
2016-09-23 08:23:56 +08:00
extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
CIFS: Check for mandatory brlocks on read/write Currently CIFS code accept read/write ops on mandatory locked area when two processes use the same file descriptor - it's wrong. Fix this by serializing io and brlock operations on the inode. Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-19 21:22:44 +08:00
extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
cifs: OFD locks do not conflict with eachothers RHBZ 1484130 Update cifs_find_fid_lock_conflict() to recognize that ODF locks do not conflict with eachother. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-10-04 07:24:38 +08:00
__u64 length, __u8 type, __u16 flags,
CIFS: Check for mandatory brlocks on read/write Currently CIFS code accept read/write ops on mandatory locked area when two processes use the same file descriptor - it's wrong. Fix this by serializing io and brlock operations on the inode. Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-19 21:22:44 +08:00
struct cifsLockInfo **conf_lock,
CIFS: Do not permit write to a range mandatory locked with a read lock We don't need to permit a write to the area locked with a read lock by any process including the process that issues the write. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-11-27 22:38:53 +08:00
int rw_check);
CIFS: Fix fast lease break after open problem Now we walk though cifsFileInfo's list for every incoming lease break and look for an equivalent there. That approach misses lease breaks that come just after an open response - we don't have time to populate new cifsFileInfo structure to the list. Fix this by adding new list of pending opens and look for a lease there if we didn't find it in the list of cifsFileInfo structures. Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-19 21:22:45 +08:00
extern void cifs_add_pending_open(struct cifs_fid *fid,
struct tcon_link *tlink,
struct cifs_pending_open *open);
extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
struct tcon_link *tlink,
struct cifs_pending_open *open);
extern void cifs_del_pending_open(struct cifs_pending_open *open);
cifs: Deferred close for files When file is closed, SMB2 close request is not sent to server immediately and is deferred for acregmax defined interval. When file is reopened by same process for read or write, the file handle is reused if an oplock is held. When client receives a oplock/lease break, file is closed immediately if reference count is zero, else oplock is downgraded. Signed-off-by: Rohith Surabattula <rohiths@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-13 13:26:42 +08:00
extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
struct cifs_deferred_close **dclose);
extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
struct cifs_deferred_close *dclose);
extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
Cifs: Fix kernel oops caused by deferred close for files. Fix regression issue caused by deferred close for files. Signed-off-by: Rohith Surabattula <rohiths@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-20 03:02:03 +08:00
extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
cifs: Deferred close performance improvements During unlink/rename instead of closing all the deferred handles under tcon, close only handles under the requested dentry. Signed-off-by: Rohith Surabattula <rohiths@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-09-18 02:14:26 +08:00
extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
const char *path);
cifs: connect individual channel servers to primary channel server Today, we don't have any way to get the smb session for any of the secondary channels. Introducing a pointer to the primary server from server struct of any secondary channel. The value will be NULL for the server of the primary channel. This will enable us to get the smb session for any channel. This will be needed for some of the changes that I'm planning to make soon. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 19:26:24 +08:00
extern struct TCP_Server_Info *
cifs_get_tcp_session(struct smb3_fs_context *ctx,
struct TCP_Server_Info *primary_server);
CIFS: Fix a possible memory corruption during reconnect We can not unlock/lock cifs_tcp_ses_lock while walking through ses and tcon lists because it can corrupt list iterator pointers and a tcon structure can be released if we don't hold an extra reference. Fix it by moving a reconnect process to a separate delayed work and acquiring a reference to every tcon that needs to be reconnected. Also do not send an echo request on newly established connections. CC: Stable <stable@vger.kernel.org> Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-11-05 02:50:31 +08:00
extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
int from_reconnect);
extern void cifs_put_tcon(struct cifs_tcon *tcon);
cifs: clean up call to cifs_dfs_release_automount_timer() Take the #ifdef junk out of the code, and turn it into a noop macro when CONFIG_CIFS_DFS_UPCALL isn't defined. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-03-21 18:27:54 +08:00
smb: client: get rid of dfs naming in automount code Automount code will handle both DFS links and reparse mount points. Also, get rid of BUG_ON() in cifs_release_automount_timer() while we're at it. Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-08-17 23:34:04 +08:00
extern void cifs_release_automount_timer(void);
cifs: clean up call to cifs_dfs_release_automount_timer() Take the #ifdef junk out of the code, and turn it into a noop macro when CONFIG_CIFS_DFS_UPCALL isn't defined. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-03-21 18:27:54 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void cifs_proc_init(void);
void cifs_proc_clean(void);
CIFS: Add brlock support for SMB2 Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru>
2012-09-19 21:22:43 +08:00
extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
extern void cifs_free_llist(struct list_head *llist);
extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
cifs: merge __{cifs,smb2}_reconnect[_tcon]() into cifs_tree_connect() They were identical execpt to CIFSTCon() vs. SMB2_tcon(). These are also available via ops->tree_connect(). Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-07-21 20:36:38 +08:00
extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
const struct nls_table *nlsc);
CIFS: Move protocol specific negotiate code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:43:58 +08:00
extern int cifs_negotiate_protocol(const unsigned int xid,
cifs: use the chans_need_reconnect bitmap for reconnect status We use the concept of "binding" when one of the secondary channel is in the process of connecting/reconnecting to the server. Till this binding process completes, and the channel is bound to an existing session, we redirect traffic from other established channels on the binding channel, effectively blocking all traffic till individual channels get reconnected. With my last set of commits, we can get rid of this binding serialization. We now have a bitmap of connection states for each channel. We will use this bitmap instead for tracking channel status. Having a bitmap also now enables us to keep the session alive, as long as even a single channel underneath is alive. Unfortunately, this also meant that we need to supply the tcp connection info for the channel during all negotiate and session setup functions. These changes have resulted in a slightly bigger code churn. However, I expect perf and robustness improvements in the mchan scenario after this change. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 21:54:16 +08:00
struct cifs_ses *ses,
struct TCP_Server_Info *server);
CIFS: Move protocol specific session setup/logoff code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:54:49 +08:00
extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
cifs: use the chans_need_reconnect bitmap for reconnect status We use the concept of "binding" when one of the secondary channel is in the process of connecting/reconnecting to the server. Till this binding process completes, and the channel is bound to an existing session, we redirect traffic from other established channels on the binding channel, effectively blocking all traffic till individual channels get reconnected. With my last set of commits, we can get rid of this binding serialization. We now have a bitmap of connection states for each channel. We will use this bitmap instead for tracking channel status. Having a bitmap also now enables us to keep the session alive, as long as even a single channel underneath is alive. Unfortunately, this also meant that we need to supply the tcp connection info for the channel during all negotiate and session setup functions. These changes have resulted in a slightly bigger code churn. However, I expect perf and robustness improvements in the mchan scenario after this change. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 21:54:16 +08:00
struct TCP_Server_Info *server,
CIFS: Move protocol specific session setup/logoff code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:54:49 +08:00
struct nls_table *nls_info);
cifs: track the enablement of signing in the TCP_Server_Info Currently, we determine this according to flags in the sec_mode, flags in the global_secflags and via other methods. That makes the semantics very hard to follow and there are corner cases where we don't handle this correctly. Add a new bool to the TCP_Server_Info that acts as a simple flag to tell us whether signing is enabled on this connection or not, and fix up the places that need to determine this to use that flag. This is a bit weird for the SMB2 case, where signing is per-session. SMB2 needs work in this area already though. The existing SMB2 code has similar logic to what we're using here, so there should be no real change in behavior. These changes should make it easier to implement per-session signing in the future though. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2013-05-26 19:01:00 +08:00
extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
cifs: use the chans_need_reconnect bitmap for reconnect status We use the concept of "binding" when one of the secondary channel is in the process of connecting/reconnecting to the server. Till this binding process completes, and the channel is bound to an existing session, we redirect traffic from other established channels on the binding channel, effectively blocking all traffic till individual channels get reconnected. With my last set of commits, we can get rid of this binding serialization. We now have a bitmap of connection states for each channel. We will use this bitmap instead for tracking channel status. Having a bitmap also now enables us to keep the session alive, as long as even a single channel underneath is alive. Unfortunately, this also meant that we need to supply the tcp connection info for the channel during all negotiate and session setup functions. These changes have resulted in a slightly bigger code churn. However, I expect perf and robustness improvements in the mchan scenario after this change. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 21:54:16 +08:00
extern int CIFSSMBNegotiate(const unsigned int xid,
struct cifs_ses *ses,
struct TCP_Server_Info *server);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Move protocol specific tcon/tdis code to ops struct and rename variables around the code changes. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 15:11:39 +08:00
extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
const char *tree, struct cifs_tcon *tcon,
const struct nls_table *);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
cifs: obtain file access during backup intent lookup (resend) Rebased and resending the patch. Path based queries can fail for lack of access, especially during lookup during open. open itself would actually succeed becasue of back up intent bit but queries (either path or file handle based) do not have a means to specifiy backup intent bit. So query the file info during lookup using trans2 / findfirst / file_id_full_dir_info to obtain file info as well as file_id/inode value. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-29 01:21:14 +08:00
const char *searchName, struct cifs_sb_info *cifs_sb,
cifs: Include backup intent search flags during searches {try #2) As observed and suggested by Tushar Gosavi... --------- readdir calls these function to send TRANS2_FIND_FIRST and TRANS2_FIND_NEXT command to the server. The current cifs module is not specifying CIFS_SEARCH_BACKUP_SEARCH flag while sending these command when backupuid/backupgid is specified. This can be resolved by specifying CIFS_SEARCH_BACKUP_SEARCH flag. --------- Cc: <stable@kernel.org> Reported-and-Tested-by: Tushar Gosavi <tugosavi@in.ibm.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-15 23:19:16 +08:00
__u16 *searchHandle, __u16 search_flags,
struct cifs_search_info *psrch_inf,
cifs: obtain file access during backup intent lookup (resend) Rebased and resending the patch. Path based queries can fail for lack of access, especially during lookup during open. open itself would actually succeed becasue of back up intent bit but queries (either path or file handle based) do not have a means to specifiy backup intent bit. So query the file info during lookup using trans2 / findfirst / file_id_full_dir_info to obtain file info as well as file_id/inode value. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-29 01:21:14 +08:00
bool msearch);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
cifs: Include backup intent search flags during searches {try #2) As observed and suggested by Tushar Gosavi... --------- readdir calls these function to send TRANS2_FIND_FIRST and TRANS2_FIND_NEXT command to the server. The current cifs module is not specifying CIFS_SEARCH_BACKUP_SEARCH flag while sending these command when backupuid/backupgid is specified. This can be resolved by specifying CIFS_SEARCH_BACKUP_SEARCH flag. --------- Cc: <stable@kernel.org> Reported-and-Tested-by: Tushar Gosavi <tugosavi@in.ibm.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-15 23:19:16 +08:00
__u16 searchHandle, __u16 search_flags,
struct cifs_search_info *psrch_inf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const __u16 search_handle);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
cifs: add a CIFSSMBQFileInfo function ...to get inode attributes via filehandle instead of by path. In some places, we need to revalidate an inode on an open filehandle, but we can't necessarily guarantee that the dentry associated with it will still be valid. When we have an open filehandle already, it makes more sense to do a filehandle based operation anyway. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-02-12 20:44:16 +08:00
u16 netfid, FILE_ALL_INFO *pFindData);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move is_path_accessible to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 18:40:22 +08:00
const char *search_Name, FILE_ALL_INFO *data,
int legacy /* whether to use old info level */,
const struct nls_table *nls_codepage, int remap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move is_path_accessible to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 18:40:22 +08:00
const char *search_name, FILE_ALL_INFO *data,
const struct nls_table *nls_codepage, int remap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
cifs: add a CIFSSMBUnixQFileInfo function ...to allow us to get unix attrs via filehandle. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-02-12 20:44:17 +08:00
u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const unsigned char *searchName,
[CIFS] cleanup old checkpatch warnings Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-13 12:54:12 +08:00
FILE_UNIX_BASIC_INFO *pFindData,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
const struct nls_table *nls_codepage, int remap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
CIFS: Move getting dfs referalls to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-28 00:21:53 +08:00
const char *search_name,
struct dfs_info3_param **target_nodes,
unsigned int *num_of_nodes,
const struct nls_table *nls_codepage, int remap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: move DFS response parsing out of SMB1 code since the DFS payload is not tied to the SMB version we can: * isolate the DFS payload in its own struct, and include that struct in packet structs * move the function that parses the response to misc.c and make it work on the new DFS payload struct (add payload size and utf16 flag as a result). Signed-off-by: Aurelien Aptel <aaptel@suse.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-02-13 23:03:47 +08:00
extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
unsigned int *num_of_nodes,
struct dfs_info3_param **target_nodes,
const struct nls_table *nls_codepage, int remap,
const char *searchName, bool is_unicode);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
cifs: don't pass superblock to cifs_mount() To close sget() races we'll need to be able to set cifs_sb up before we get the superblock, so we'll want to be able to do cifs_mount() earlier. Fortunately, it's easy to do - setting ->s_maxbytes can be done in cifs_read_super(), ditto for ->s_time_gran and as for putting MS_POSIXACL into ->s_flags, we can mirror it in ->mnt_cifs_flags until cifs_read_super() is called. Kill unused 'devname' argument, while we are at it... Acked-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-17 21:05:48 +08:00
struct cifs_sb_info *cifs_sb,
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
struct smb3_fs_context *ctx);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
struct kstatfs *FSData);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] Add support for legacy servers part nine. statfs (df and du) is now functional, and the length check is fixed so readdir does not throw a warning message when windows me messes up the response to FindFirst of an empty dir (with only . and ..). Signed-off-by: Steve French (sfrench@us.ibm.com)
2005-09-22 13:05:57 +08:00
struct kstatfs *FSData);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] POSIX extensions, SetFSInfo added Signed-off-by: Steve French@sfrench@us.ibm.com Signed-off-by: Jeremy Allison (jra@samba.org)
2005-06-23 08:26:35 +08:00
__u64 cap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *tcon);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
struct kstatfs *FSData);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] reduce checkpatch warnings Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-08 07:25:02 +08:00
const char *fileName, const FILE_BASIC_INFO *data,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
const struct nls_table *nls_codepage,
cifs: smb1: Try failing back to SetFileInfo if SetPathInfo fails RHBZ 1145308 Some very old server may not support SetPathInfo to adjust the timestamps of directories. For these servers, try to open the directory and use SetFileInfo. Minor correction to patch included that was Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Tested-by: Kenneth D'souza <kdsouza@redhat.com>
2020-07-15 06:18:05 +08:00
struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
Rename CIFSSMBSetFileTimes to CIFSSMBSetFileInfo and add PID arg The new name is more clear since this is also used to set file attributes. We'll need the pid_of_opener arg so that we can pass in filehandles of other pids and spare ourselves an open call. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-08-02 19:26:12 +08:00
const FILE_BASIC_INFO *data, __u16 fid,
__u32 pid_of_opener);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetFileDisposition(const unsigned int xid,
struct cifs_tcon *tcon,
bool delete_file, __u16 fid,
__u32 pid_of_opener);
extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move set_file_size to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:31 +08:00
const char *file_name, __u64 size,
struct cifs_sb_info *cifs_sb, bool set_allocation);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move set_file_size to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:31 +08:00
struct cifsFileInfo *cfile, __u64 size,
bool set_allocation);
bundle up Unix SET_PATH_INFO args into a struct and change name We'd like to be able to use the unix SET_PATH_INFO_BASIC args to set file times as well, but that makes the argument list rather long. Bundle up the args for unix SET_PATH_INFO call into a struct. For now, we don't actually use the times fields anywhere. That will be done in a follow-on patch. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-08-02 19:26:12 +08:00
struct cifs_unix_set_info_args {
__u64 ctime;
__u64 atime;
__u64 mtime;
__u64 mode;
cifs: Modify struct cifs_unix_set_info_args to hold a kuid_t and a kgid_t Use INVALID_UID and INVALID_GID instead of NO_CHANGE_64 to indicate the value should not be changed. In cifs_fill_unix_set_info convert from kuids and kgids into uids and gids that will fit in FILE_UNIX_BASIC_INFO. Cc: Steve French <smfrench@gmail.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-02-06 16:57:56 +08:00
kuid_t uid;
kgid_t gid;
bundle up Unix SET_PATH_INFO args into a struct and change name We'd like to be able to use the unix SET_PATH_INFO_BASIC args to set file times as well, but that makes the argument list rather long. Bundle up the args for unix SET_PATH_INFO call into a struct. For now, we don't actually use the times fields anywhere. That will be done in a follow-on patch. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-08-02 19:26:12 +08:00
dev_t device;
};
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
struct cifs_tcon *tcon,
cifs: add and use CIFSSMBUnixSetFileInfo for setattr calls cifs: add and use CIFSSMBUnixSetFileInfo for setattr calls When there's an open filehandle, SET_FILE_INFO is apparently preferred over SET_PATH_INFO. Add a new variant that sets a FILE_UNIX_INFO_BASIC infolevel via SET_FILE_INFO and switch cifs_setattr_unix to use the new call when there's an open filehandle available. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-07-10 08:02:50 +08:00
const struct cifs_unix_set_info_args *args,
u16 fid, u32 pid_of_opener);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
CIFS: Simplify cifs_mkdir call Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-13 18:04:46 +08:00
struct cifs_tcon *tcon, const char *file_name,
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
const struct cifs_unix_set_info_args *args,
const struct nls_table *nls_codepage,
CIFS: Simplify cifs_mkdir call Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-13 18:04:46 +08:00
int remap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
smb3: pass mode bits into create calls We need to populate an ACL (security descriptor open context) on file and directory correct. This patch passes in the mode. Followon patch will build the open context and the security descriptor (from the mode) that goes in the open context. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2019-09-25 13:32:13 +08:00
extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
umode_t mode, struct cifs_tcon *tcon,
CIFS: Separate protocol specific part from mkdir Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-03-17 16:41:12 +08:00
const char *name, struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move rmdir code to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-10 20:14:18 +08:00
const char *name, struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] Add support for new POSIX unlink In the cleanup phase of the dbench test, we were noticing sharing violation followed by failed directory removals when dbench did not close the test files before the cleanup phase started. Using the new POSIX unlink, which Samba has supported for a few months, avoids this. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-15 09:48:57 +08:00
const char *name, __u16 type,
const struct nls_table *nls_codepage,
int remap_special_chars);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move unlink code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:25 +08:00
const char *name, struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move rename to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:30 +08:00
const char *from_name, const char *to_name,
struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
int netfid, const char *target_name,
const struct nls_table *nls_codepage,
int remap_special_chars);
CIFS: Move hardlink to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:31 +08:00
extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
const char *from_name, const char *to_name,
struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSUnixCreateHardLink(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const char *fromName, const char *toName,
[CIFS] whitespace fixes This changeset brought to you ... by patchcheck.pl Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-29 03:44:13 +08:00
const struct nls_table *nls_codepage,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
int remap_special_chars);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSUnixCreateSymLink(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const char *fromName, const char *toName,
Fix that several functions handle incorrect value of mapchars Cifs client has problem with reserved chars filename. [BUG1] : several functions handle incorrect value of mapchars - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + cifs_remap(cifs_sb)); [BUG2] : forget to convert reserved chars when creating SymbolicLink. - CIFSUnixCreateSymLink() calls cifs_strtoUTF16 + CIFSUnixCreateSymLink() calls cifsConvertToUTF16() with remap [BUG3] : forget to convert reserved chars when getting SymbolicLink. - CIFSSMBUnixQuerySymLink() calls cifs_strtoUTF16 + CIFSSMBUnixQuerySymLink() calls cifsConvertToUTF16() with remap [BUG4] : /proc/mounts don't show "mapposix" when using mapposix mount option + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) + seq_puts(s, ",mapposix"); Reported-by: t.wede@kw-reneg.de Reported-by: Nakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: Nakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: Carl Schaefer <schaefer@trilug.org> Signed-off-by: Steve French <smfrench@gmail.com>
2015-02-13 14:35:58 +08:00
const struct nls_table *nls_codepage, int remap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *tcon,
cifs: change CIFSSMBUnixQuerySymLink to use new helpers Change CIFSSMBUnixQuerySymLink to use the new unicode helper functions. Also change the calling conventions so that the allocation of the target name buffer is done in CIFSSMBUnixQuerySymLink rather than by the caller. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-04-30 19:17:56 +08:00
const unsigned char *searchName, char **syminfo,
Fix that several functions handle incorrect value of mapchars Cifs client has problem with reserved chars filename. [BUG1] : several functions handle incorrect value of mapchars - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + cifs_remap(cifs_sb)); [BUG2] : forget to convert reserved chars when creating SymbolicLink. - CIFSUnixCreateSymLink() calls cifs_strtoUTF16 + CIFSUnixCreateSymLink() calls cifsConvertToUTF16() with remap [BUG3] : forget to convert reserved chars when getting SymbolicLink. - CIFSSMBUnixQuerySymLink() calls cifs_strtoUTF16 + CIFSSMBUnixQuerySymLink() calls cifsConvertToUTF16() with remap [BUG4] : /proc/mounts don't show "mapposix" when using mapposix mount option + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) + seq_puts(s, ",mapposix"); Reported-by: t.wede@kw-reneg.de Reported-by: Nakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: Nakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: Carl Schaefer <schaefer@trilug.org> Signed-off-by: Steve French <smfrench@gmail.com>
2015-02-13 14:35:58 +08:00
const struct nls_table *nls_codepage, int remap);
CIFS: Implement follow_link for nounix CIFS mounts by using a query reparse ioctl request. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-08-14 23:25:22 +08:00
extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
__u16 fid, char **symlinkinfo,
const struct nls_table *nls_codepage);
Allow setting per-file compression via CIFS protocol An earlier patch allowed setting the per-file compression flag "chattr +c filename" on an smb2 or smb3 mount, and also allowed lsattr to return whether a file on a cifs, or smb2/smb3 mount was compressed. This patch extends the ability to set the per-file compression flag to the cifs protocol, which uses a somewhat different IOCTL mechanism than SMB2, although the payload (the flags stored in the compression_state) are the same. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-10-15 04:27:32 +08:00
extern int CIFSSMB_set_compression(const unsigned int xid,
struct cifs_tcon *tcon, __u16 fid);
CIFS: Cleanup cifs open codepath Rename CIFSSMBOpen to CIFS_open and make it take cifs_open_parms structure as a parm. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2014-01-16 19:53:36 +08:00
extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
int *oplock, FILE_ALL_INFO *buf);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] Support for legacy servers part 3 - Add support for Open and most of Read support. Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-08-25 14:06:05 +08:00
const char *fileName, const int disposition,
const int access_flags, const int omode,
[CIFS] minor checkpatch cleanup Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-11-17 07:05:52 +08:00
__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
[CIFS] Support for legacy servers part 3 - Add support for Open and most of Read support. Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-08-25 14:06:05 +08:00
const struct nls_table *nls_codepage, int remap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] minor checkpatch cleanup Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-11-17 07:05:52 +08:00
u32 posix_flags, __u64 mode, __u16 *netfid,
[CIFS] New CIFS POSIX mkdir performance improvement Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-04-24 06:07:35 +08:00
FILE_UNIX_BASIC_INFO *pRetData,
__u32 *pOplock, const char *name,
[CIFS] whitespace fixes This changeset brought to you ... by patchcheck.pl Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-29 03:44:13 +08:00
const struct nls_table *nls_codepage, int remap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const int smb_file_id);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] Send SMB flush in cifs_fsync In contrast to the now-obsolete smbfs, cifs does not send SMB_COM_FLUSH in response to an explicit fsync(2) to guarantee that all volatile data is written to stable storage on the server side, provided the server honors the request (which, to my knowledge, is true for Windows and Samba with 'strict sync' enabled). This patch modifies the cifs_fsync implementation to restore the fsync-behavior of smbfs by triggering SMB_COM_FLUSH after sending outstanding data on the client side to the server. Signed-off-by: Horst Reiterer <horst.reiterer@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-02-22 05:17:43 +08:00
const int smb_file_id);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
CIFS: Add rwpidforward mount option Add rwpidforward mount option that switches on a mode when we forward pid of a process who opened a file to any read and write operation. This can prevent applications like WINE from failing on read or write operation on a previously locked file region from the same netfd from another process if we use mandatory brlock style. It is actual for WINE because during a run of WINE program two processes work on the same netfd - share the same file struct between several VFS fds: 1) WINE-server does open and lock; 2) WINE-application does read and write. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-26 14:02:00 +08:00
unsigned int *nbytes, char **buf,
[CIFS] whitespace fixes This changeset brought to you ... by patchcheck.pl Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-29 03:44:13 +08:00
int *return_buf_type);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
cifs: get rid of unused arguments of CIFSSMBWrite() they used to be used, but... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-09-06 05:53:43 +08:00
unsigned int *nbytes, const char *buf);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
CIFS: Move writepage to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:30 +08:00
unsigned int *nbytes, struct kvec *iov, const int nvec);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Move query inode info code to ops struct Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-27 21:34:43 +08:00
const char *search_name, __u64 *inode_number,
const struct nls_table *nls_codepage,
int remap);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
const __u16 netfid, const __u8 lock_type,
const __u32 num_unlock, const __u32 num_lock,
LOCKING_ANDX_RANGE *buf);
extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Simplify byte range locking code Split cifs_lock into several functions and let CIFSSMBLock get pid as an argument. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2010-08-17 15:26:00 +08:00
const __u16 netfid, const __u32 netpid, const __u64 len,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const __u64 offset, const __u32 numUnlock,
const __u32 numLock, const __u8 lockType,
CIFS: Fix oplock break handling (try #2) When we get oplock break notification we should set the appropriate value of OplockLevel field in oplock break acknowledge according to the oplock level held by the client in this time. As we only can have level II oplock or no oplock in the case of oplock break, we should be aware only about clientCanCacheRead field in cifsInodeInfo structure. Also fix bug connected with wrong interpretation of OplockLevel field during oplock break notification processing. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-18 01:15:44 +08:00
const bool waitFlag, const __u8 oplock_level);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
CIFS: Implement caching mechanism for posix brlocks to handle all lock requests on the client in an exclusive oplock case. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-22 19:33:30 +08:00
const __u16 smb_file_id, const __u32 netpid,
cifs: move file_lock off stack in cifs_push_posix_locks struct file_lock is pretty large, so we really don't want that on the stack in a potentially long call chain. Reorganize the arguments to CIFSSMBPosixLock to eliminate the need for that. Eliminate the get_flag and simply use a non-NULL pLockInfo to indicate that this is a "get" operation. In order to do that, need to add a new loff_t argument for the start_offset. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24 01:28:37 +08:00
const loff_t start_offset, const __u64 len,
struct file_lock *, const __u16 lock_type,
const bool waitFlag);
CIFS: Move protocol specific tcon/tdis code to ops struct and rename variables around the code changes. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 15:11:39 +08:00
extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
cifs: add ability to send an echo request Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-11 20:24:21 +08:00
extern int CIFSSMBEcho(struct TCP_Server_Info *server);
CIFS: Move protocol specific session setup/logoff code to ops struct Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-05-25 14:54:49 +08:00
extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern struct cifs_ses *sesInfoAlloc(void);
extern void sesInfoFree(struct cifs_ses *);
smb3: do not start laundromat thread when dir leases disabled When no directory lease support, or for IPC shares where directories can not be opened, do not start an unneeded laundromat thread for that mount (it wastes resources). Fixes: d14de8067e3f ("cifs: Add a laundromat thread for cached directories") Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Acked-by: Tom Talpey <tom@talpey.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-09-20 00:35:53 +08:00
extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern void tconInfoFree(struct cifs_tcon *);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
cifs: change signing routines to deal with smb_rqst structs We need a way to represent a call to be sent on the wire that does not require having all of the page data kmapped. Behold the smb_rqst struct. This new struct represents an array of kvecs immediately followed by an array of pages. Convert the signing routines to use these structs under the hood and turn the existing functions for this into wrappers around that. For now, we're just changing these functions to take different args. Later, we'll teach them how to deal with arrays of pages. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:34 +08:00
extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number);
cifs: rename cifs_sign_smb2 to cifs_sign_smbv "smb2" makes me think of the SMB2.x protocol, which isn't at all what this function is for... Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24 01:28:38 +08:00
extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
[CIFS] Readpages and readir performance improvements - eliminate extra memcpy. Part 1 Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-12-03 05:32:45 +08:00
__u32 *);
cifs: change signing routines to deal with smb_rqst structs We need a way to represent a call to be sent on the wire that does not require having all of the page data kmapped. Behold the smb_rqst struct. This new struct represents an array of kvecs immediately followed by an array of pages. Convert the signing routines to use these structs under the hood and turn the existing functions for this into wrappers around that. For now, we're just changing these functions to take different args. Later, we'll teach them how to deal with arrays of pages. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:34 +08:00
extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
extern int cifs_verify_signature(struct smb_rqst *rqst,
NTLM auth and sign - Allocate session key/client response dynamically Start calculating auth response within a session. Move/Add pertinet data structures like session key, server challenge and ntlmv2_hash in a session structure. We should do the calculations within a session before copying session key and response over to server data structures because a session setup can fail. Only after a very first smb session succeeds, it copy/make its session key, session key of smb connection. This key stays with the smb connection throughout its life. sequence_number within server is set to 0x2. The authentication Message Authentication Key (mak) which consists of session key followed by client response within structure session_key is now dynamic. Every authentication type allocates the key + response sized memory within its session structure and later either assigns or frees it once the client response is sent and if session's session key becomes connetion's session key. ntlm/ntlmi authentication functions are rearranged. A function named setup_ntlm_resp(), similar to setup_ntlmv2_resp(), replaces function cifs_calculate_session_key(). size of CIFS_SESS_KEY_SIZE is changed to 16, to reflect the byte size of the key it holds. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-10-21 19:42:55 +08:00
struct TCP_Server_Info *server,
[CIFS] Fix packet signatures for NTLMv2 case Signed-off-by: Yehuda Sadeh Weinraub <Yehuda.Sadeh@expand.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-09 15:55:14 +08:00
__u32 expected_sequence_number);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
CIFS: Encrypt SMB3 requests before sending This change allows to encrypt packets if it is required by a server for SMB sessions or tree connections. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2016-11-04 07:47:37 +08:00
extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
extern int calc_seckey(struct cifs_ses *);
cifs: use the chans_need_reconnect bitmap for reconnect status We use the concept of "binding" when one of the secondary channel is in the process of connecting/reconnecting to the server. Till this binding process completes, and the channel is bound to an existing session, we redirect traffic from other established channels on the binding channel, effectively blocking all traffic till individual channels get reconnected. With my last set of commits, we can get rid of this binding serialization. We now have a bitmap of connection states for each channel. We will use this bitmap instead for tracking channel status. Having a bitmap also now enables us to keep the session alive, as long as even a single channel underneath is alive. Unfortunately, this also meant that we need to supply the tcp connection info for the channel during all negotiate and session setup functions. These changes have resulted in a slightly bigger code churn. However, I expect perf and robustness improvements in the mchan scenario after this change. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 21:54:16 +08:00
extern int generate_smb30signingkey(struct cifs_ses *ses,
struct TCP_Server_Info *server);
extern int generate_smb311signingkey(struct cifs_ses *ses,
struct TCP_Server_Info *server);
NTLM auth and sign - Define crypto hash functions and create and send keys needed for key exchange Mark dependency on crypto modules in Kconfig. Defining per structures sdesc and cifs_secmech which are used to store crypto hash functions and contexts. They are stored per smb connection and used for all auth mechs to genereate hash values and signatures. Allocate crypto hashing functions, security descriptiors, and respective contexts when a smb/tcp connection is established. Release them when a tcp/smb connection is taken down. md5 and hmac-md5 are two crypto hashing functions that are used throught the life of an smb/tcp connection by various functions that calcualte signagure and ntlmv2 hash, HMAC etc. structure ntlmssp_auth is defined as per smb connection. ntlmssp_auth holds ciphertext which is genereated by rc4/arc4 encryption of secondary key, a nonce using ntlmv2 session key and sent in the session key field of the type 3 message sent by the client during ntlmssp negotiation/exchange A key is exchanged with the server if client indicates so in flags in type 1 messsage and server agrees in flag in type 2 message of ntlmssp negotiation. If both client and agree, a key sent by client in type 3 message of ntlmssp negotiation in the session key field. The key is a ciphertext generated off of secondary key, a nonce, using ntlmv2 hash via rc4/arc4. Signing works for ntlmssp in this patch. The sequence number within the server structure needs to be zero until session is established i.e. till type 3 packet of ntlmssp exchange of a to be very first smb session on that smb connection is sent. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-10-22 03:25:08 +08:00
cifs: when insecure legacy is disabled shrink amount of SMB1 code Currently much of the smb1 code is built even when CONFIG_CIFS_ALLOW_INSECURE_LEGACY is disabled. Move cifssmb.c to only be compiled when insecure legacy is disabled, and move various SMB1/CIFS helper functions to that ifdef. Some functions that were not SMB1/CIFS specific needed to be moved out of cifssmb.c This shrinks cifs.ko by more than 10% which is good - but also will help with the eventual movement of the legacy code to a distinct module. Follow on patches can shrink the number of ifdefs by code restructuring where smb1 code is wedged in functions that should be calling dialect specific helper functions instead, and also by moving some functions from file.c/dir.c/inode.c into smb1 specific c files. Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-08-02 00:17:46 +08:00
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBCopy(unsigned int xid,
[CIFS] Rename three structures to avoid camel case secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27 12:34:02 +08:00
struct cifs_tcon *source_tcon,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
const char *fromName,
const __u16 target_tid,
const char *toName, const int flags,
[CIFS] whitespace/formatting fixes This should be the last big batch of whitespace/formatting fixes. checkpatch warnings for the cifs directory are down about 90% and many of the remaining ones are harder to remove or make the code harder to read. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-13 08:33:32 +08:00
const struct nls_table *nls_codepage,
[PATCH] cifs: character mapping of special characters (part 3 of 3) Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29 13:41:06 +08:00
int remap_special_chars);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
cifs: merge CIFSSMBQueryEA with CIFSSMBQAllEAs Add an "ea_name" parameter to CIFSSMBQAllEAs. When it's set make it behave like CIFSSMBQueryEA does now. The current callers of CIFSSMBQueryEA are converted to use CIFSSMBQAllEAs, and the old CIFSSMBQueryEA function is removed. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-02-11 05:18:26 +08:00
const unsigned char *searchName,
const unsigned char *ea_name, char *EAData,
[CIFS] Minor cleanup of xattr query function Some minor cleanup of cifs query xattr functions (will also make SMB3 xattr implementation cleaner as well). Signed-off-by: Steve French <steve.french@primarydata.com>
2017-05-13 09:59:10 +08:00
size_t bufsize, struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] whitespace fixes This changeset brought to you ... by patchcheck.pl Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-29 03:44:13 +08:00
const char *fileName, const char *ea_name,
const void *ea_value, const __u16 ea_value_len,
cifs: Add support for writing attributes on SMB2+ This adds support for writing extended attributes on SMB2+ shares. Attributes can be written using the setfattr command. RH-bz: 1110709 Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2017-08-24 09:24:56 +08:00
const struct nls_table *nls_codepage,
struct cifs_sb_info *cifs_sb);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] acl support part 6 Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> CC: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-26 05:17:17 +08:00
__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
cifs: Call id to SID mapping functions to change owner/group (try #4 repost) Now build security descriptor to change either owner or group at the server. Initially security descriptor was built to change only (D)ACL, that functionality has been extended. When either an Owner or a Group of a file object at the server is changed, rest of security descriptor remains same (DACL etc.). To set security descriptor, it is necessary to open that file with permission bits of either WRITE_DAC if DACL is being modified or WRITE_OWNER (Take Ownership) if Owner or Group is being changed. It is the server that decides whether a set security descriptor with either owner or group change succeeds or not. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-13 23:26:03 +08:00
struct cifs_ntsd *, __u32, int);
cifs: implement get acl method The current way of setting and getting posix acls through the generic xattr interface is error prone and type unsafe. The vfs needs to interpret and fixup posix acls before storing or reporting it to userspace. Various hacks exist to make this work. The code is hard to understand and difficult to maintain in it's current form. Instead of making this work by hacking posix acls through xattr handlers we are building a dedicated posix acl api around the get and set inode operations. This removes a lot of hackiness and makes the codepaths easier to maintain. A lot of background can be found in [1]. In order to build a type safe posix api around get and set acl we need all filesystem to implement get and set acl. So far cifs wasn't able to implement get and set acl inode operations because it needs access to the dentry. Now that we extended the set acl inode operation to take a dentry argument and added a new get acl inode operation that takes a dentry argument we can let cifs implement get and set acl inode operations. This is mostly a copy and paste of the codepaths currently used in cifs' posix acl xattr handler. After we have fully implemented the posix acl api and switched the vfs over to it, the cifs specific posix acl xattr handler and associated code will be removed and the code duplication will go away. Note, until the vfs has been switched to the new posix acl api this patch is a non-functional change. Link: https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org [1] Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2022-09-22 23:17:02 +08:00
extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
const unsigned char *searchName,
struct posix_acl **acl, const int acl_type,
const struct nls_table *nls_codepage, int remap);
cifs: implement set acl method The current way of setting and getting posix acls through the generic xattr interface is error prone and type unsafe. The vfs needs to interpret and fixup posix acls before storing or reporting it to userspace. Various hacks exist to make this work. The code is hard to understand and difficult to maintain in it's current form. Instead of making this work by hacking posix acls through xattr handlers we are building a dedicated posix acl api around the get and set inode operations. This removes a lot of hackiness and makes the codepaths easier to maintain. A lot of background can be found in [1]. In order to build a type safe posix api around get and set acl we need all filesystem to implement get and set acl. So far cifs wasn't able to implement get and set acl inode operations because it needs access to the dentry. Now that we extended the set acl inode operation to take a dentry argument and added a new get acl inode operation that takes a dentry argument we can let cifs implement get and set acl inode operations. This is mostly a copy and paste of the codepaths currently used in cifs' posix acl xattr handler. After we have fully implemented the posix acl api and switched the vfs over to it, the cifs specific posix acl xattr handler and associated code will be removed and the code duplication will go away. Note, until the vfs has been switched to the new posix acl api this patch is a non-functional change. Link: https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org [1] Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2022-09-22 23:17:03 +08:00
extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
const unsigned char *fileName,
const struct posix_acl *acl, const int acl_type,
const struct nls_table *nls_codepage, int remap);
CIFS: Rename Get/FreeXid and make them work with unsigned int Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-06-20 15:21:16 +08:00
extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
[CIFS] minor checkpatch cleanup Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-11-17 07:05:52 +08:00
const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
cifs: when insecure legacy is disabled shrink amount of SMB1 code Currently much of the smb1 code is built even when CONFIG_CIFS_ALLOW_INSECURE_LEGACY is disabled. Move cifssmb.c to only be compiled when insecure legacy is disabled, and move various SMB1/CIFS helper functions to that ifdef. Some functions that were not SMB1/CIFS specific needed to be moved out of cifssmb.c This shrinks cifs.ko by more than 10% which is good - but also will help with the eventual movement of the legacy code to a distinct module. Follow on patches can shrink the number of ifdefs by code restructuring where smb1 code is wedged in functions that should be calling dialect specific helper functions instead, and also by moving some functions from file.c/dir.c/inode.c into smb1 specific c files. Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-08-02 00:17:46 +08:00
#endif /* CIFS_ALLOW_INSECURE_LEGACY */
cifs: clean up handling when server doesn't consistently support inode numbers It's possible that a server will return a valid FileID when we query the FILE_INTERNAL_INFO for the root inode, but then zeroed out inode numbers when we do a FindFile with an infolevel of SMB_FIND_FILE_ID_FULL_DIR_INFO. In this situation turn off querying for server inode numbers, generate a warning for the user and just generate an inode number using iunique. Once we generate any inode number with iunique we can no longer use any server inode numbers or we risk collisions, so ensure that we don't do that in cifs_get_inode_info either. Cc: Stable <stable@kernel.org> Reported-by: Timothy Normand Miller <theosib@gmail.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-11-07 03:18:29 +08:00
extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
cifs: Rename MF symlink function names Clean up camel case in functionnames. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-11-26 01:09:50 +08:00
extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
cifs: We do not drop reference to tlink in CIFSCheckMFSymlink() When we obtain tcon from cifs_sb, we use cifs_sb_tlink() to first obtain tlink which also grabs a reference to it. We do not drop this reference to tlink once we are done with the call. The patch fixes this issue by instead passing tcon as a parameter and avoids having to obtain a reference to the tlink. A lookup for the tcon is already made in the calling functions and this way we avoid having to re-run the lookup. This is also consistent with the argument list for other similar calls for M-F symlinks. We should also return an ENOSYS when we do not find a protocol specific function to lookup the MF Symlink data. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> CC: Stable <stable@kernel.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-11-26 01:09:48 +08:00
struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr,
const unsigned char *path);
cifs: Assume passwords are encoded according to iocharset (try #2) Re-posting a patch originally posted by Oskar Liljeblad after rebasing on 3.2. Modify cifs to assume that the supplied password is encoded according to iocharset. Before this patch passwords would be treated as raw 8-bit data, which made authentication with Unicode passwords impossible (at least passwords with characters > 0xFF). The previous code would as a side effect accept passwords encoded with ISO 8859-1, since Unicode < 0x100 basically is ISO 8859-1. Software which relies on that will no longer support password chars > 0x7F unless it also uses iocharset=iso8859-1. (mount.cifs does not care about the encoding so it will work as expected.) Signed-off-by: Oskar Liljeblad <oskar@osk.mine.nu> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Tested-by: A <nimbus1_03087@yahoo.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-21 02:21:59 +08:00
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
const struct nls_table *codepage);
cifs: Fix DFS cache refresher for DFS links As per MS-DFSC, when a DFS cache entry is expired and it is a DFS link, then a new DFS referral must be sent to root server in order to refresh the expired entry. This patch ensures that all new DFS referrals for refreshing the cache are sent to DFS root. Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-03-20 03:54:29 +08:00
cifs: Add DFS cache routines * Add new dfs_cache.[ch] files * Add new /proc/fs/cifs/dfscache file - dump current cache when read - clear current cache when writing "0" to it * Add delayed_work to periodically refresh cache entries The new interface will be used for caching DFS referrals, as well as supporting client target failover. The DFS cache is a hashtable that maps UNC paths to cache entries. A cache entry contains: - the UNC path it is mapped on - how much the the UNC path the entry consumes - flags - a Time-To-Live after which the entry expires - a list of possible targets (linked lists of UNC paths) - a "hint target" pointing the last known working target or the first target if none were tried. This hint lets cifs.ko remember and try working targets first. * Looking for an entry in the cache is done with dfs_cache_find() - if no valid entries are found, a DFS query is made, stored in the cache and returned - the full target list can be copied and returned to avoid race conditions and looped on with the help with the dfs_cache_tgt_iterator * Updating the target hint to the next target is done with dfs_cache_update_tgthint() These functions have a dfs_cache_noreq_XXX() version that doesn't fetches referrals if no entries are found. These versions don't require the tcp/ses/tcon/cifs_sb parameters as a result. Expired entries cannot be used and since they have a pretty short TTL [1] in order for them to be useful for failover the DFS cache adds a delayed work called periodically to keep them fresh. Since we might not have available connections to issue the referral request when refreshing we need to store volume_info structs with credentials and other needed info to be able to connect to the right server. 1: Windows defaults: 5mn for domain-based referrals, 30mn for regular links Signed-off-by: Paulo Alcantara <palcantara@suse.de> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 02:01:21 +08:00
extern struct TCP_Server_Info *
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
cifs_find_tcp_session(struct smb3_fs_context *ctx);
cifs: Add DFS cache routines * Add new dfs_cache.[ch] files * Add new /proc/fs/cifs/dfscache file - dump current cache when read - clear current cache when writing "0" to it * Add delayed_work to periodically refresh cache entries The new interface will be used for caching DFS referrals, as well as supporting client target failover. The DFS cache is a hashtable that maps UNC paths to cache entries. A cache entry contains: - the UNC path it is mapped on - how much the the UNC path the entry consumes - flags - a Time-To-Live after which the entry expires - a list of possible targets (linked lists of UNC paths) - a "hint target" pointing the last known working target or the first target if none were tried. This hint lets cifs.ko remember and try working targets first. * Looking for an entry in the cache is done with dfs_cache_find() - if no valid entries are found, a DFS query is made, stored in the cache and returned - the full target list can be copied and returned to avoid race conditions and looped on with the help with the dfs_cache_tgt_iterator * Updating the target hint to the next target is done with dfs_cache_update_tgthint() These functions have a dfs_cache_noreq_XXX() version that doesn't fetches referrals if no entries are found. These versions don't require the tcp/ses/tcon/cifs_sb parameters as a result. Expired entries cannot be used and since they have a pretty short TTL [1] in order for them to be useful for failover the DFS cache adds a delayed work called periodically to keep them fresh. Since we might not have available connections to issue the referral request when refreshing we need to store volume_info structs with credentials and other needed info to be able to connect to the right server. 1: Windows defaults: 5mn for domain-based referrals, 30mn for regular links Signed-off-by: Paulo Alcantara <palcantara@suse.de> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 02:01:21 +08:00
cifs: fix sharing of DFS connections When matching DFS connections, we can't rely on the values set in cifs_sb_info::prepath and cifs_tcon::tree_name as they might change during DFS failover. The DFS referrals related to a specific DFS tcon are already matched earlier in match_server(), therefore we can safely skip those checks altogether as the connection is guaranteed to be unique for the DFS tcon. Besides, when creating or finding an SMB session, make sure to also refcount any DFS root session related to it (cifs_ses::dfs_root_ses), so if a new DFS mount ends up reusing the connection from the old mount while there was an umount(2) still in progress (e.g. umount(2) -> cifs_umount() -> reconnect -> cifs_put_tcon()), the connection could potentially be put right after the umount(2) finished. Patch has minor update to include fix for unused variable issue noted by the kernel test robot Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/oe-kbuild-all/202305041040.j7W2xQSy-lkp@intel.com/ Cc: stable@vger.kernel.org # v6.2+ Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-04-24 10:26:51 +08:00
void __cifs_put_smb_ses(struct cifs_ses *ses);
cifs: Fix DFS cache refresher for DFS links As per MS-DFSC, when a DFS cache entry is expired and it is a DFS link, then a new DFS referral must be sent to root server in order to refresh the expired entry. This patch ensures that all new DFS referrals for refreshing the cache are sent to DFS root. Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-03-20 03:54:29 +08:00
extern struct cifs_ses *
cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-10 13:07:12 +08:00
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
cifs: Fix DFS cache refresher for DFS links As per MS-DFSC, when a DFS cache entry is expired and it is a DFS link, then a new DFS referral must be sent to root server in order to refresh the expired entry. This patch ensures that all new DFS referrals for refreshing the cache are sent to DFS root. Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-03-20 03:54:29 +08:00
cifs: add refcounting to cifs_readdata structures This isn't strictly necessary for the async readpages code, but the uncached version will need to be able to collect the replies after issuing the calls. Add a kref to cifs_readdata and use change the code to take and put references appropriately. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-05-16 19:13:17 +08:00
void cifs_readdata_release(struct kref *refcount);
cifs: add cifs_async_readv ...which will allow cifs to do an asynchronous read call to the server. The caller will allocate and set up cifs_readdata for each READ_AND_X call that should be issued on the wire. The pages passed in are added to the pagecache, but not placed on the LRU list yet (as we need the page->lru to keep the pages on the list in the readdata). When cifsd identifies the mid, it will see that there is a special receive handler for the call, and use that to receive the rest of the frame. cifs_readv_receive will then marshal up a kvec array with kmapped pages from the pagecache, which eliminates one copy of the data. Once the data is received, the pages are added to the LRU list, set uptodate, and unlocked. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-10-20 03:30:07 +08:00
int cifs_async_readv(struct cifs_readdata *rdata);
CIFS: Add SMB2 support for cifs_iovec_read Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-19 07:20:29 +08:00
int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
cifs: add cifs_async_readv ...which will allow cifs to do an asynchronous read call to the server. The caller will allocate and set up cifs_readdata for each READ_AND_X call that should be issued on the wire. The pages passed in are added to the pagecache, but not placed on the LRU list yet (as we need the page->lru to keep the pages on the list in the readdata). When cifsd identifies the mid, it will see that there is a special receive handler for the call, and use that to receive the rest of the frame. cifs_readv_receive will then marshal up a kvec array with kmapped pages from the pagecache, which eliminates one copy of the data. Once the data is received, the pages are added to the LRU list, set uptodate, and unlocked. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-10-20 03:30:07 +08:00
[CIFS] clean up page array when uncached write send fails In the event that a send fails in an uncached write, or we end up needing to reissue it (-EAGAIN case), we'll kfree the wdata but the pages currently leak. Fix this by adding a new kref release routine for uncached writedata that releases the pages, and have the uncached codepaths use that. [original patch by Jeff modified to fix minor formatting problems] Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2014-02-08 10:45:12 +08:00
int cifs_async_writev(struct cifs_writedata *wdata,
void (*release)(struct kref *kref));
cifs: allow caller to specify completion op when allocating writedata We'll need a different set of write completion ops when not writing out of the pagecache. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-24 02:40:55 +08:00
void cifs_writev_complete(struct work_struct *work);
cifs: Change the I/O paths to use an iterator rather than a page list Currently, the cifs I/O paths hand lists of pages from the VM interface routines at the top all the way through the intervening layers to the socket interface at the bottom. This is a problem, however, for interfacing with netfslib which passes an iterator through to the ->issue_read() method (and will pass an iterator through to the ->issue_write() method in future). Netfslib takes over bounce buffering for direct I/O, async I/O and encrypted content, so cifs doesn't need to do that. Netfslib also converts IOVEC-type iterators into BVEC-type iterators if necessary. Further, cifs needs foliating - and folios may come in a variety of sizes, so a page list pointing to an array of heterogeneous pages may cause problems in places such as where crypto is done. Change the cifs I/O paths to hand iov_iter iterators all the way through instead. Notes: (1) Some old routines are #if'd out to be removed in a follow up patch so as to avoid confusing diff, thereby making the diff output easier to follow. I've removed functions that don't overlap with anything added. (2) struct smb_rqst loses rq_pages, rq_offset, rq_npages, rq_pagesz and rq_tailsz which describe the pages forming the buffer; instead there's an rq_iter describing the source buffer and an rq_buffer which is used to hold the buffer for encryption. (3) struct cifs_readdata and cifs_writedata are similarly modified to smb_rqst. The ->read_into_pages() and ->copy_into_pages() are then replaced with passing the iterator directly to the socket. The iterators are stored in these structs so that they are persistent and don't get deallocated when the function returns (unlike if they were stack variables). (4) Buffered writeback is overhauled, borrowing the code from the afs filesystem to gather up contiguous runs of folios. The XARRAY-type iterator is then used to refer directly to the pagecache and can be passed to the socket to transmit data directly from there. This includes: cifs_extend_writeback() cifs_write_back_from_locked_folio() cifs_writepages_region() cifs_writepages() (5) Pages are converted to folios. (6) Direct I/O uses netfs_extract_user_iter() to create a BVEC-type iterator from an IOBUF/UBUF-type source iterator. (7) smb2_get_aead_req() uses netfs_extract_iter_to_sg() to extract page fragments from the iterator into the scatterlists that the crypto layer prefers. (8) smb2_init_transform_rq() attached pages to smb_rqst::rq_buffer, an xarray, to use as a bounce buffer for encryption. An XARRAY-type iterator can then be used to pass the bounce buffer to lower layers. Signed-off-by: David Howells <dhowells@redhat.com> cc: Steve French <sfrench@samba.org> cc: Shyam Prasad N <nspmangalore@gmail.com> cc: Rohith Surabattula <rohiths.msft@gmail.com> cc: Paulo Alcantara <pc@cjr.nz> cc: Jeff Layton <jlayton@kernel.org> cc: linux-cifs@vger.kernel.org Link: https://lore.kernel.org/r/164311907995.2806745.400147335497304099.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/164928620163.457102.11602306234438271112.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165211420279.3154751.15923591172438186144.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165348880385.2106726.3220789453472800240.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/165364827111.3334034.934805882842932881.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/166126396180.708021.271013668175370826.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/166697259595.61150.5982032408321852414.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/166732031756.3186319.12528413619888902872.stgit@warthog.procyon.org.uk/ # rfc Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-25 05:13:24 +08:00
struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
cifs: add cifs_async_writev Add the ability for CIFS to do an asynchronous write. The kernel will set the frame up as it would for a "normal" SMBWrite2 request, and use cifs_call_async to send it. The mid callback will then be configured to handle the result. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-20 04:22:56 +08:00
void cifs_writedata_release(struct kref *refcount);
cifs: Rename and cleanup open_query_close_cifs_symlink() Rename open_query_close_cifs_symlink to cifs_query_mf_symlink() to make the name more consistent with other protocol version specific functions. We also pass tcon as an argument to the function. This is already available in the calling functions and we can avoid having to make an unnecessary lookup. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-11-26 01:09:49 +08:00
int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_read);
cifs: Add create MFSymlinks to protocol ops struct Add a new protocol ops function create_mf_symlink and have create_mf_symlink() use it. This patchset moves the MFSymlink operations completely to the ops structure so that we only use the right protocol versions when querying or creating MFSymlinks. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-11-26 01:09:52 +08:00
int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_written);
cifs: push rfc1002 generation down the stack Move the generation of the 4 byte length field down the stack and generate it immediately before we start writing the data to the socket. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com>
2018-06-12 06:00:58 +08:00
int __cifs_calc_signature(struct smb_rqst *rqst,
cifs: merge the hash calculation helpers three practically identical copies... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-11-13 11:46:49 +08:00
struct TCP_Server_Info *server, char *signature,
struct shash_desc *shash);
smb2: Enforce sec= mount option If the security type specified using a mount option is not supported, the SMB2 session setup code changes the security type to RawNTLMSSP. We should instead fail the mount and return an error. The patch changes the code for SMB2 to make it similar to the code used for SMB1. Like in SMB1, we now use the global security flags to select the security method to be used when no security method is specified and to return an error when the requested auth method is not available. For SMB2, we also use ntlmv2 as a synonym for nltmssp. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-01-18 18:05:57 +08:00
enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
enum securityEnum);
CIFS: Add asynchronous context to support kernel AIO Currently the code doesn't recognize asynchronous calls passed by io_submit() and processes all calls synchronously. This is not what kernel AIO expects. This patch introduces a new async context that keeps track of all issued i/o requests and moves a response collecting procedure to a separate thread. This allows to return to a caller immediately for async calls and call iocb->ki_complete() once all requests are completed. For sync calls the current thread simply waits until all requests are completed. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-04-26 02:52:29 +08:00
struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
void cifs_aio_ctx_release(struct kref *refcount);
CIFS: refactor crypto shash/sdesc allocation&free shash and sdesc and always allocated and freed together. * abstract this in new functions cifs_alloc_hash() and cifs_free_hash(). * make smb2/3 crypto allocation independent from each other. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> CC: Stable <stable@vger.kernel.org>
2018-02-17 02:19:27 +08:00
cifs: secmech: use shash_desc directly, remove sdesc The struct sdesc is just a wrapper around shash_desc, with exact same memory layout. Replace the hashing TFMs with shash_desc as it's what's passed to the crypto API anyway. Also remove the crypto_shash pointers as they can be accessed via shash_desc->tfm (and are actually only used in the setkey calls). Adapt cifs_{alloc,free}_hash functions to this change. Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-09-30 04:36:50 +08:00
int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
void cifs_free_hash(struct shash_desc **sdesc);
CIFS: refactor crypto shash/sdesc allocation&free shash and sdesc and always allocated and freed together. * abstract this in new functions cifs_alloc_hash() and cifs_free_hash(). * make smb2/3 crypto allocation independent from each other. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> CC: Stable <stable@vger.kernel.org>
2018-02-17 02:19:27 +08:00
cifs: multichannel: try to rebind when reconnecting a channel first steps in trying to make channels properly reconnect. * add cifs_ses_find_chan() function to find the enclosing cifs_chan struct it belongs to * while we have the session lock and are redoing negprot and sess.setup in smb2_reconnect() redo the binding of channels. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-04-24 22:55:31 +08:00
struct cifs_chan *
cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
cifs: simplify handling of cifs_sb/ctx->local_nls Only load/unload local_nls from cifs_sb and just make the ctx contain a pointer to cifs_sb->ctx. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-14 14:40:20 +08:00
int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
cifs: try opening channels after mounting After doing mount() successfully we call cifs_try_adding_channels() which will open as many channels as it can. Channels are closed when the master session is closed. The master connection becomes the first channel. ,-------------> global cifs_tcp_ses_list <-------------------------. | | '- TCP_Server_Info <--> TCP_Server_Info <--> TCP_Server_Info <-' (master con) (chan#1 con) (chan#2 con) | ^ ^ ^ v '--------------------|--------------------' cifs_ses | - chan_count = 3 | - chans[] ---------------------' - smb3signingkey[] (master signing key) Note how channel connections don't have sessions. That's because cifs_ses can only be part of one linked list (list_head are internal to the elements). For signing keys, each channel has its own signing key which must be used only after the channel has been bound. While it's binding it must use the master session signing key. For encryption keys, since channel connections do not have sessions attached we must now find matching session by looping over all sessions in smb2_get_enc_key(). Each channel is opened like a regular server connection but at the session setup request step it must set the SMB2_SESSION_REQ_FLAG_BINDING flag and use the session id to bind to. Finally, while sending in compound_send_recv() for requests that aren't negprot, ses-setup or binding related, use a channel by cycling through the available ones (round-robin). Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-09-20 12:31:10 +08:00
bool is_server_using_iface(struct TCP_Server_Info *server,
struct cifs_server_iface *iface);
bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
cifs: introduce cifs_ses_mark_for_reconnect() helper Use new cifs_ses_mark_for_reconnect() helper to mark all session channels for reconnect instead of duplicating it in different places. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-17 00:38:58 +08:00
void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
CIFS: Introduce helper function to get page offset and length in smb_rqst Introduce a function rqst_page_get_length to return the page offset and length for a given page in smb_rqst. This function is to be used by following patches. Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-05-31 03:47:58 +08:00
cifs: track individual channel status using chans_need_reconnect We needed a way to identify the channels under the smb session which are in reconnect, so that the traffic to other channels can continue. So I replaced the bool need_reconnect with a bitmask identifying all the channels that need reconnection (named chans_need_reconnect). When a channel needs reconnection, the bit corresponding to the index of the server in ses->chans is used to set this bitmask. Checking if no channels or all the channels need reconnect then becomes very easy. Also wrote some helper macros for checking and setting the bits. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 20:46:53 +08:00
unsigned int
cifs_ses_get_chan_index(struct cifs_ses *ses,
struct TCP_Server_Info *server);
void
cifs: avoid parallel session setups on same channel After allowing channels to reconnect in parallel, it now becomes important to take care that multiple processes do not call negotiate/session setup in parallel on the same channel. This change avoids that by marking a channel as "in_reconnect". During session setup if the channel in question has this flag set, we return immediately. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-04-08 21:31:37 +08:00
cifs_chan_set_in_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
void
cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
bool
cifs_chan_in_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
void
cifs: track individual channel status using chans_need_reconnect We needed a way to identify the channels under the smb session which are in reconnect, so that the traffic to other channels can continue. So I replaced the bool need_reconnect with a bitmask identifying all the channels that need reconnection (named chans_need_reconnect). When a channel needs reconnection, the bit corresponding to the index of the server in ses->chans is used to set this bitmask. Checking if no channels or all the channels need reconnect then becomes very easy. Also wrote some helper macros for checking and setting the bits. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 20:46:53 +08:00
cifs_chan_set_need_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
void
cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
bool
cifs_chan_needs_reconnect(struct cifs_ses *ses,
struct TCP_Server_Info *server);
cifs: during reconnect, update interface if necessary Going forward, the plan is to periodically query the server for it's interfaces (when multichannel is enabled). This change allows checking for inactive interfaces during reconnect, and reconnect to a new interface if necessary. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-03 16:47:30 +08:00
bool
cifs_chan_is_iface_active(struct cifs_ses *ses,
struct TCP_Server_Info *server);
int
cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
cifs: periodically query network interfaces from server Currently, we only query the server for network interfaces information at the time of mount, and never afterwards. This can be a problem, especially for services like Azure, where the IP address of the channel endpoints can change over time. With this change, we schedule a 600s polling of this info from the server for each tree connect. An alternative for periodic polling was to do this only at the time of reconnect. But this could delay the reconnect time slightly. Also, there are some challenges w.r.t how we have cifs_reconnect implemented today. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-06-06 17:17:56 +08:00
int
smb3: do not log confusing message when server returns no network interfaces Some servers can return an empty network interface list so, unless multichannel is requested, no need to log an error for this, and when multichannel is requested on mount but no interfaces, log something less confusing. For this case change parse_server_interfaces: malformed interface info to empty network interface list returned by server localhost Also do not relog this error every ten minutes (only log on mount, once) Cc: <stable@vger.kernel.org> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-02 00:44:08 +08:00
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
cifs: track individual channel status using chans_need_reconnect We needed a way to identify the channels under the smb session which are in reconnect, so that the traffic to other channels can continue. So I replaced the bool need_reconnect with a bitmask identifying all the channels that need reconnection (named chans_need_reconnect). When a channel needs reconnection, the bit corresponding to the index of the server in ses->chans is used to set this bitmask. Checking if no channels or all the channels need reconnect then becomes very easy. Also wrote some helper macros for checking and setting the bits. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-07-19 20:46:53 +08:00
cifs: Add support for failover in smb2_reconnect() After a successful failover in cifs_reconnect(), the smb2_reconnect() function will make sure to reconnect every tcon to new target server. For SMB2+. Signed-off-by: Paulo Alcantara <palcantara@suse.de> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 03:20:31 +08:00
void extract_unc_hostname(const char *unc, const char **h, size_t *len);
cifs: replace various strncpy with strscpy and similar Using strscpy is cleaner, and avoids some problems with handling maximum length strings. Linus noticed the original problem and Aurelien pointed out some additional problems. Fortunately most of this is SMB1 code (and in particular the ASCII string handling older, which is less common). Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-27 07:30:14 +08:00
int copy_path_name(char *dst, const char *src);
cifs: use compounding for open and first query-dir for readdir() Combine the initial SMB2_Open and the first SMB2_Query_Directory in a compound. This shaves one round-trip of each directory listing, changing it from 4 to 3 for small directories. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2020-01-08 11:08:06 +08:00
int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
int resp_buftype,
struct cifs_search_info *srch_inf);
cifs: Add support for failover in smb2_reconnect() After a successful failover in cifs_reconnect(), the smb2_reconnect() function will make sure to reconnect every tcon to new target server. For SMB2+. Signed-off-by: Paulo Alcantara <palcantara@suse.de> Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 03:20:31 +08:00
smb: client: fix shared DFS root mounts with different prefixes When having two DFS root mounts that are connected to same namespace, same mount options but different prefix paths, we can't really use the shared @server->origin_fullpath when chasing DFS links in them. Move the origin_fullpath field to cifs_tcon structure so when having shared DFS root mounts with different prefix paths, and we need to chase any DFS links, dfs_get_automount_devname() will pick up the correct full path out of the @tcon that will be used for the new mount. Before patch mount.cifs //dom/dfs/dir /mnt/1 -o ... mount.cifs //dom/dfs /mnt/2 -o ... # shared server, ses, tcon # server: origin_fullpath=//dom/dfs/dir # @server->origin_fullpath + '/dir/link1' $ ls /mnt/2/dir/link1 ls: cannot open directory '/mnt/2/dir/link1': No such file or directory After patch mount.cifs //dom/dfs/dir /mnt/1 -o ... mount.cifs //dom/dfs /mnt/2 -o ... # shared server & ses # tcon_1: origin_fullpath=//dom/dfs/dir # tcon_2: origin_fullpath=//dom/dfs # @tcon_2->origin_fullpath + '/dir/link1' $ ls /mnt/2/dir/link1 dir0 dir1 dir10 dir3 dir5 dir6 dir7 dir9 target2_file.txt tsub Fixes: 8e3554150d6c ("cifs: fix sharing of DFS connections") Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-06-27 03:04:17 +08:00
struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
cifs: handle prefix paths in reconnect For the case where we have a DFS path like below and we're currently connected to targetA: //dfsroot/link -> //targetA/share/foo, //targetB/share/bar after failover, we should make sure to update cifs_sb->prepath so the next operations will use the new prefix path "/bar". Besides, in order to simplify the use of different prefix paths, enforce CIFS_MOUNT_USE_PREFIX_PATH for DFS mounts so we don't have to revalidate the root dentry every time we set a new prefix path. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-02-21 06:49:34 +08:00
void cifs_put_tcp_super(struct super_block *sb);
cifs: support nested dfs links over reconnect Mounting a dfs link that has nested links was already supported at mount(2), so make it work over reconnect as well. Make the following case work: * mount //root/dfs/link /mnt -o ... - final share: /server/share * in server settings - change target folder of /root/dfs/link3 to /server/share2 - change target folder of /root/dfs/link2 to /root/dfs/link3 - change target folder of /root/dfs/link to /root/dfs/link2 * mount -o remount,... /mnt - refresh all dfs referrals - mark current connection for failover - cifs_reconnect() reconnects to root server - tree_connect() * checks that /root/dfs/link2 is a link, then chase it * checks that root/dfs/link3 is a link, then chase it * finally tree connect to /server/share2 If the mounted share is no longer accessible and a reconnect had been triggered, the client will retry it from both last referral path (/root/dfs/link3) and original referral path (/root/dfs/link). Any new referral paths found while chasing dfs links over reconnect, it will be updated to TCP_Server_Info::leaf_fullpath, accordingly. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-04 00:53:29 +08:00
int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
cifs: Make extract_hostname function public Move the function to misc.c and give it a public header. Signed-off-by: Samuel Cabrero <scabrero@suse.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-01 02:02:47 +08:00
char *extract_hostname(const char *unc);
cifs: Make extract_sharename function public Move the function to misc.c Signed-off-by: Samuel Cabrero <scabrero@suse.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-01 02:02:48 +08:00
char *extract_sharename(const char *unc);
cifs: handle prefix paths in reconnect For the case where we have a DFS path like below and we're currently connected to targetA: //dfsroot/link -> //targetA/share/foo, //targetB/share/bar after failover, we should make sure to update cifs_sb->prepath so the next operations will use the new prefix path "/bar". Besides, in order to simplify the use of different prefix paths, enforce CIFS_MOUNT_USE_PREFIX_PATH for DFS mounts so we don't have to revalidate the root dentry every time we set a new prefix path. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-02-21 06:49:34 +08:00
cifs: Make use of DFS cache to get new DFS referrals This patch will make use of DFS cache routines where appropriate and do not always request a new referral from server. Signed-off-by: Paulo Alcantara <palcantara@suse.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 02:24:03 +08:00
#ifdef CONFIG_CIFS_DFS_UPCALL
static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
const char *old_path,
const struct nls_table *nls_codepage,
struct dfs_info3_param *referral, int remap)
{
return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
referral, NULL);
}
cifs: handle hostnames that resolve to same ip in failover In order to support reconnect to hostnames that resolve to same ip address, besides relying on the currently set hostname to match DFS targets, attempt to resolve the targets and then match their addresses with the reconnected server ip address. For instance, if we have two hostnames "FOO" and "BAR", and both resolve to the same ip address, we would be able to handle failover in DFS paths like \\FOO\dfs\link1 -> [ \BAZ\share2 (*), \BAR\share1 ] \\FOO\dfs\link2 -> [ \BAZ\share2 (*), \FOO\share1 ] so when "BAZ" is no longer accessible, link1 and link2 would get reconnected despite having different target hostnames. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-05-20 02:38:28 +08:00
int match_target_ip(struct TCP_Server_Info *server,
const char *share, size_t share_len,
bool *result);
cifs: improve checking of DFS links over STATUS_OBJECT_NAME_INVALID Do not map STATUS_OBJECT_NAME_INVALID to -EREMOTE under non-DFS shares, or 'nodfs' mounts or CONFIG_CIFS_DFS_UPCALL=n builds. Otherwise, in the slow path, get a referral to figure out whether it is an actual DFS link. This could be simply reproduced under a non-DFS share by running the following $ mount.cifs //srv/share /mnt -o ... $ cat /mnt/$(printf '\U110000') cat: '/mnt/'$'\364\220\200\200': Object is remote Fixes: c877ce47e137 ("cifs: reduce roundtrips on create/qinfo requests") CC: stable@vger.kernel.org # 6.2 Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-03-01 06:01:54 +08:00
int cifs_inval_name_dfs_link_error(const unsigned int xid,
struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const char *full_path,
bool *islink);
#else
static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const char *full_path,
bool *islink)
{
*islink = false;
return 0;
}
cifs: Make use of DFS cache to get new DFS referrals This patch will make use of DFS cache routines where appropriate and do not always request a new referral from server. Signed-off-by: Paulo Alcantara <palcantara@suse.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-11-15 02:24:03 +08:00
#endif
SMB3: Backup intent flag missing from some more ops When "backup intent" is requested on the mount (e.g. backupuid or backupgid mount options), the corresponding flag was missing from some of the operations. Change all operations to use the macro cifs_create_options() to set the backup intent flag if needed. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-02-04 03:46:43 +08:00
static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
{
smb3: fix problem with null cifs super block with previous patch Add check for null cifs_sb to create_options helper Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2020-02-05 03:02:59 +08:00
if (cifs_sb && (backup_cred(cifs_sb)))
SMB3: Backup intent flag missing from some more ops When "backup intent" is requested on the mount (e.g. backupuid or backupgid mount options), the corresponding flag was missing from some of the operations. Change all operations to use the macro cifs_create_options() to set the backup intent flag if needed. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-02-04 03:46:43 +08:00
return options | CREATE_OPEN_BACKUP_INTENT;
else
return options;
}
cifs: support nested dfs links over reconnect Mounting a dfs link that has nested links was already supported at mount(2), so make it work over reconnect as well. Make the following case work: * mount //root/dfs/link /mnt -o ... - final share: /server/share * in server settings - change target folder of /root/dfs/link3 to /server/share2 - change target folder of /root/dfs/link2 to /root/dfs/link3 - change target folder of /root/dfs/link to /root/dfs/link2 * mount -o remount,... /mnt - refresh all dfs referrals - mark current connection for failover - cifs_reconnect() reconnects to root server - tree_connect() * checks that /root/dfs/link2 is a link, then chase it * checks that root/dfs/link3 is a link, then chase it * finally tree connect to /server/share2 If the mounted share is no longer accessible and a reconnect had been triggered, the client will retry it from both last referral path (/root/dfs/link3) and original referral path (/root/dfs/link). Any new referral paths found while chasing dfs links over reconnect, it will be updated to TCP_Server_Info::leaf_fullpath, accordingly. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-04 00:53:29 +08:00
struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
void cifs_put_tcon_super(struct super_block *sb);
cifs: prevent data race in cifs_reconnect_tcon() Make sure to get an up-to-date TCP_Server_Info::nr_targets value prior to waiting the server to be reconnected in cifs_reconnect_tcon(). It is set in cifs_tcp_ses_needs_reconnect() and protected by TCP_Server_Info::srv_lock. Create a new cifs_wait_for_server_reconnect() helper that can be used by both SMB2+ and CIFS reconnect code. Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-03-01 06:01:55 +08:00
int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
cifs: support nested dfs links over reconnect Mounting a dfs link that has nested links was already supported at mount(2), so make it work over reconnect as well. Make the following case work: * mount //root/dfs/link /mnt -o ... - final share: /server/share * in server settings - change target folder of /root/dfs/link3 to /server/share2 - change target folder of /root/dfs/link2 to /root/dfs/link3 - change target folder of /root/dfs/link to /root/dfs/link2 * mount -o remount,... /mnt - refresh all dfs referrals - mark current connection for failover - cifs_reconnect() reconnects to root server - tree_connect() * checks that /root/dfs/link2 is a link, then chase it * checks that root/dfs/link3 is a link, then chase it * finally tree connect to /server/share2 If the mounted share is no longer accessible and a reconnect had been triggered, the client will retry it from both last referral path (/root/dfs/link3) and original referral path (/root/dfs/link). Any new referral paths found while chasing dfs links over reconnect, it will be updated to TCP_Server_Info::leaf_fullpath, accordingly. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-04 00:53:29 +08:00
cifs: fix sharing of DFS connections When matching DFS connections, we can't rely on the values set in cifs_sb_info::prepath and cifs_tcon::tree_name as they might change during DFS failover. The DFS referrals related to a specific DFS tcon are already matched earlier in match_server(), therefore we can safely skip those checks altogether as the connection is guaranteed to be unique for the DFS tcon. Besides, when creating or finding an SMB session, make sure to also refcount any DFS root session related to it (cifs_ses::dfs_root_ses), so if a new DFS mount ends up reusing the connection from the old mount while there was an umount(2) still in progress (e.g. umount(2) -> cifs_umount() -> reconnect -> cifs_put_tcon()), the connection could potentially be put right after the umount(2) finished. Patch has minor update to include fix for unused variable issue noted by the kernel test robot Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/oe-kbuild-all/202305041040.j7W2xQSy-lkp@intel.com/ Cc: stable@vger.kernel.org # v6.2+ Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-04-24 10:26:51 +08:00
/* Put references of @ses and @ses->dfs_root_ses */
static inline void cifs_put_smb_ses(struct cifs_ses *ses)
{
struct cifs_ses *rses = ses->dfs_root_ses;
__cifs_put_smb_ses(ses);
if (rses)
__cifs_put_smb_ses(rses);
}
/* Get an active reference of @ses and @ses->dfs_root_ses.
*
* NOTE: make sure to call this function when incrementing reference count of
* @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
* will also get its reference count incremented.
*
* cifs_put_smb_ses() will put both references, so call it when you're done.
*/
static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
{
lockdep_assert_held(&cifs_tcp_ses_lock);
ses->ses_count++;
if (ses->dfs_root_ses)
ses->dfs_root_ses->ses_count++;
}
static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
{
if (strlen(s1) != strlen(s2))
return false;
for (; *s1; s1++, s2++) {
if (*s1 == '/' || *s1 == '\\') {
if (*s2 != '/' && *s2 != '\\')
return false;
} else if (tolower(*s1) != tolower(*s2))
return false;
}
return true;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* _CIFSPROTO_H */
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