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linux/fs/orangefs/orangefs-utils.c
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

649 lines
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// SPDX-License-Identifier: GPL-2.0
/*
* (C) 2001 Clemson University and The University of Chicago
*
* See COPYING in top-level directory.
*/
#include "protocol.h"
#include "orangefs-kernel.h"
#include "orangefs-dev-proto.h"
#include "orangefs-bufmap.h"
__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
{
__s32 fsid = ORANGEFS_FS_ID_NULL;
if (op) {
switch (op->upcall.type) {
case ORANGEFS_VFS_OP_FILE_IO:
fsid = op->upcall.req.io.refn.fs_id;
break;
case ORANGEFS_VFS_OP_LOOKUP:
fsid = op->upcall.req.lookup.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_CREATE:
fsid = op->upcall.req.create.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_GETATTR:
fsid = op->upcall.req.getattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_REMOVE:
fsid = op->upcall.req.remove.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_MKDIR:
fsid = op->upcall.req.mkdir.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_READDIR:
fsid = op->upcall.req.readdir.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SETATTR:
fsid = op->upcall.req.setattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SYMLINK:
fsid = op->upcall.req.sym.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_RENAME:
fsid = op->upcall.req.rename.old_parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_STATFS:
fsid = op->upcall.req.statfs.fs_id;
break;
case ORANGEFS_VFS_OP_TRUNCATE:
fsid = op->upcall.req.truncate.refn.fs_id;
break;
case ORANGEFS_VFS_OP_RA_FLUSH:
fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
break;
case ORANGEFS_VFS_OP_FS_UMOUNT:
fsid = op->upcall.req.fs_umount.fs_id;
break;
case ORANGEFS_VFS_OP_GETXATTR:
fsid = op->upcall.req.getxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SETXATTR:
fsid = op->upcall.req.setxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_LISTXATTR:
fsid = op->upcall.req.listxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_REMOVEXATTR:
fsid = op->upcall.req.removexattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_FSYNC:
fsid = op->upcall.req.fsync.refn.fs_id;
break;
default:
break;
}
}
return fsid;
}
static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
{
int flags = 0;
if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
flags |= S_IMMUTABLE;
else
flags &= ~S_IMMUTABLE;
if (attrs->flags & ORANGEFS_APPEND_FL)
flags |= S_APPEND;
else
flags &= ~S_APPEND;
if (attrs->flags & ORANGEFS_NOATIME_FL)
flags |= S_NOATIME;
else
flags &= ~S_NOATIME;
return flags;
}
static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
{
int perm_mode = 0;
if (attrs->perms & ORANGEFS_O_EXECUTE)
perm_mode |= S_IXOTH;
if (attrs->perms & ORANGEFS_O_WRITE)
perm_mode |= S_IWOTH;
if (attrs->perms & ORANGEFS_O_READ)
perm_mode |= S_IROTH;
if (attrs->perms & ORANGEFS_G_EXECUTE)
perm_mode |= S_IXGRP;
if (attrs->perms & ORANGEFS_G_WRITE)
perm_mode |= S_IWGRP;
if (attrs->perms & ORANGEFS_G_READ)
perm_mode |= S_IRGRP;
if (attrs->perms & ORANGEFS_U_EXECUTE)
perm_mode |= S_IXUSR;
if (attrs->perms & ORANGEFS_U_WRITE)
perm_mode |= S_IWUSR;
if (attrs->perms & ORANGEFS_U_READ)
perm_mode |= S_IRUSR;
if (attrs->perms & ORANGEFS_G_SGID)
perm_mode |= S_ISGID;
if (attrs->perms & ORANGEFS_U_SUID)
perm_mode |= S_ISUID;
return perm_mode;
}
/*
* NOTE: in kernel land, we never use the sys_attr->link_target for
* anything, so don't bother copying it into the sys_attr object here.
*/
static inline int copy_attributes_from_inode(struct inode *inode,
struct ORANGEFS_sys_attr_s *attrs,
struct iattr *iattr)
{
umode_t tmp_mode;
if (!iattr || !inode || !attrs) {
gossip_err("NULL iattr (%p), inode (%p), attrs (%p) "
"in copy_attributes_from_inode!\n",
iattr,
inode,
attrs);
return -EINVAL;
}
/*
* We need to be careful to only copy the attributes out of the
* iattr object that we know are valid.
*/
attrs->mask = 0;
if (iattr->ia_valid & ATTR_UID) {
attrs->owner = from_kuid(&init_user_ns, iattr->ia_uid);
attrs->mask |= ORANGEFS_ATTR_SYS_UID;
gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
}
if (iattr->ia_valid & ATTR_GID) {
attrs->group = from_kgid(&init_user_ns, iattr->ia_gid);
attrs->mask |= ORANGEFS_ATTR_SYS_GID;
gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
}
if (iattr->ia_valid & ATTR_ATIME) {
attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
if (iattr->ia_valid & ATTR_ATIME_SET) {
attrs->atime = (time64_t)iattr->ia_atime.tv_sec;
attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
}
}
if (iattr->ia_valid & ATTR_MTIME) {
attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
if (iattr->ia_valid & ATTR_MTIME_SET) {
attrs->mtime = (time64_t)iattr->ia_mtime.tv_sec;
attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
}
}
if (iattr->ia_valid & ATTR_CTIME)
attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
/*
* ORANGEFS cannot set size with a setattr operation. Probably not likely
* to be requested through the VFS, but just in case, don't worry about
* ATTR_SIZE
*/
if (iattr->ia_valid & ATTR_MODE) {
tmp_mode = iattr->ia_mode;
if (tmp_mode & (S_ISVTX)) {
if (is_root_handle(inode)) {
/*
* allow sticky bit to be set on root (since
* it shows up that way by default anyhow),
* but don't show it to the server
*/
tmp_mode -= S_ISVTX;
} else {
gossip_debug(GOSSIP_UTILS_DEBUG,
"User attempted to set sticky bit on non-root directory; returning EINVAL.\n");
return -EINVAL;
}
}
if (tmp_mode & (S_ISUID)) {
gossip_debug(GOSSIP_UTILS_DEBUG,
"Attempting to set setuid bit (not supported); returning EINVAL.\n");
return -EINVAL;
}
attrs->perms = ORANGEFS_util_translate_mode(tmp_mode);
attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
}
return 0;
}
static int orangefs_inode_type(enum orangefs_ds_type objtype)
{
if (objtype == ORANGEFS_TYPE_METAFILE)
return S_IFREG;
else if (objtype == ORANGEFS_TYPE_DIRECTORY)
return S_IFDIR;
else if (objtype == ORANGEFS_TYPE_SYMLINK)
return S_IFLNK;
else
return -1;
}
static int orangefs_inode_is_stale(struct inode *inode, int new,
struct ORANGEFS_sys_attr_s *attrs, char *link_target)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
int type = orangefs_inode_type(attrs->objtype);
if (!new) {
/*
* If the inode type or symlink target have changed then this
* inode is stale.
*/
if (type == -1 || !(inode->i_mode & type)) {
orangefs_make_bad_inode(inode);
return 1;
}
if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
link_target, ORANGEFS_NAME_MAX)) {
orangefs_make_bad_inode(inode);
return 1;
}
}
return 0;
}
int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
u32 request_mask)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
loff_t inode_size, rounded_up_size;
int ret, type;
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
if (!new && !bypass) {
/*
* Must have all the attributes in the mask and be within cache
* time.
*/
if ((request_mask & orangefs_inode->getattr_mask) ==
request_mask &&
time_before(jiffies, orangefs_inode->getattr_time))
return 0;
}
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.getattr.refn = orangefs_inode->refn;
/*
* Size is the hardest attribute to get. The incremental cost of any
* other attribute is essentially zero.
*/
if (request_mask & STATX_SIZE || new)
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
else
new_op->upcall.req.getattr.mask =
ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
if (ret != 0)
goto out;
type = orangefs_inode_type(new_op->
downcall.resp.getattr.attributes.objtype);
ret = orangefs_inode_is_stale(inode, new,
&new_op->downcall.resp.getattr.attributes,
new_op->downcall.resp.getattr.link_target);
if (ret) {
ret = -ESTALE;
goto out;
}
switch (type) {
case S_IFREG:
inode->i_flags = orangefs_inode_flags(&new_op->
downcall.resp.getattr.attributes);
if (request_mask & STATX_SIZE || new) {
inode_size = (loff_t)new_op->
downcall.resp.getattr.attributes.size;
rounded_up_size =
(inode_size + (4096 - (inode_size % 4096)));
inode->i_size = inode_size;
orangefs_inode->blksize =
new_op->downcall.resp.getattr.attributes.blksize;
spin_lock(&inode->i_lock);
inode->i_bytes = inode_size;
inode->i_blocks =
(unsigned long)(rounded_up_size / 512);
spin_unlock(&inode->i_lock);
}
break;
case S_IFDIR:
if (request_mask & STATX_SIZE || new) {
inode->i_size = PAGE_SIZE;
orangefs_inode->blksize = i_blocksize(inode);
spin_lock(&inode->i_lock);
inode_set_bytes(inode, inode->i_size);
spin_unlock(&inode->i_lock);
}
set_nlink(inode, 1);
break;
case S_IFLNK:
if (new) {
inode->i_size = (loff_t)strlen(new_op->
downcall.resp.getattr.link_target);
orangefs_inode->blksize = i_blocksize(inode);
ret = strscpy(orangefs_inode->link_target,
new_op->downcall.resp.getattr.link_target,
ORANGEFS_NAME_MAX);
if (ret == -E2BIG) {
ret = -EIO;
goto out;
}
inode->i_link = orangefs_inode->link_target;
}
break;
}
inode->i_uid = make_kuid(&init_user_ns, new_op->
downcall.resp.getattr.attributes.owner);
inode->i_gid = make_kgid(&init_user_ns, new_op->
downcall.resp.getattr.attributes.group);
inode->i_atime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.atime;
inode->i_mtime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.mtime;
inode->i_ctime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.ctime;
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
/* special case: mark the root inode as sticky */
inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
orangefs_inode->getattr_time = jiffies +
orangefs_getattr_timeout_msecs*HZ/1000;
if (request_mask & STATX_SIZE || new)
orangefs_inode->getattr_mask = STATX_BASIC_STATS;
else
orangefs_inode->getattr_mask = STATX_BASIC_STATS & ~STATX_SIZE;
ret = 0;
out:
op_release(new_op);
return ret;
}
int orangefs_inode_check_changed(struct inode *inode)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
int ret;
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.getattr.refn = orangefs_inode->refn;
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE |
ORANGEFS_ATTR_SYS_LNK_TARGET;
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
if (ret != 0)
goto out;
ret = orangefs_inode_is_stale(inode, 0,
&new_op->downcall.resp.getattr.attributes,
new_op->downcall.resp.getattr.link_target);
out:
op_release(new_op);
return ret;
}
/*
* issues a orangefs setattr request to make sure the new attribute values
* take effect if successful. returns 0 on success; -errno otherwise
*/
int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
int ret;
new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.setattr.refn = orangefs_inode->refn;
ret = copy_attributes_from_inode(inode,
&new_op->upcall.req.setattr.attributes,
iattr);
if (ret >= 0) {
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
gossip_debug(GOSSIP_UTILS_DEBUG,
"orangefs_inode_setattr: returning %d\n",
ret);
}
op_release(new_op);
/*
* successful setattr should clear the atime, mtime and
* ctime flags.
*/
if (ret == 0) {
ClearAtimeFlag(orangefs_inode);
ClearMtimeFlag(orangefs_inode);
ClearCtimeFlag(orangefs_inode);
ClearModeFlag(orangefs_inode);
orangefs_inode->getattr_time = jiffies - 1;
}
return ret;
}
int orangefs_flush_inode(struct inode *inode)
{
/*
* If it is a dirty inode, this function gets called.
* Gather all the information that needs to be setattr'ed
* Right now, this will only be used for mode, atime, mtime
* and/or ctime.
*/
struct iattr wbattr;
int ret;
int mtime_flag;
int ctime_flag;
int atime_flag;
int mode_flag;
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
memset(&wbattr, 0, sizeof(wbattr));
/*
* check inode flags up front, and clear them if they are set. This
* will prevent multiple processes from all trying to flush the same
* inode if they call close() simultaneously
*/
mtime_flag = MtimeFlag(orangefs_inode);
ClearMtimeFlag(orangefs_inode);
ctime_flag = CtimeFlag(orangefs_inode);
ClearCtimeFlag(orangefs_inode);
atime_flag = AtimeFlag(orangefs_inode);
ClearAtimeFlag(orangefs_inode);
mode_flag = ModeFlag(orangefs_inode);
ClearModeFlag(orangefs_inode);
/* -- Lazy atime,mtime and ctime update --
* Note: all times are dictated by server in the new scheme
* and not by the clients
*
* Also mode updates are being handled now..
*/
if (mtime_flag)
wbattr.ia_valid |= ATTR_MTIME;
if (ctime_flag)
wbattr.ia_valid |= ATTR_CTIME;
if (atime_flag)
wbattr.ia_valid |= ATTR_ATIME;
if (mode_flag) {
wbattr.ia_mode = inode->i_mode;
wbattr.ia_valid |= ATTR_MODE;
}
gossip_debug(GOSSIP_UTILS_DEBUG,
"*********** orangefs_flush_inode: %pU "
"(ia_valid %d)\n",
get_khandle_from_ino(inode),
wbattr.ia_valid);
if (wbattr.ia_valid == 0) {
gossip_debug(GOSSIP_UTILS_DEBUG,
"orangefs_flush_inode skipping setattr()\n");
return 0;
}
gossip_debug(GOSSIP_UTILS_DEBUG,
"orangefs_flush_inode (%pU) writing mode %o\n",
get_khandle_from_ino(inode),
inode->i_mode);
ret = orangefs_inode_setattr(inode, &wbattr);
return ret;
}
void orangefs_make_bad_inode(struct inode *inode)
{
if (is_root_handle(inode)) {
/*
* if this occurs, the pvfs2-client-core was killed but we
* can't afford to lose the inode operations and such
* associated with the root handle in any case.
*/
gossip_debug(GOSSIP_UTILS_DEBUG,
"*** NOT making bad root inode %pU\n",
get_khandle_from_ino(inode));
} else {
gossip_debug(GOSSIP_UTILS_DEBUG,
"*** making bad inode %pU\n",
get_khandle_from_ino(inode));
make_bad_inode(inode);
}
}
/*
* The following is a very dirty hack that is now a permanent part of the
* ORANGEFS protocol. See protocol.h for more error definitions.
*/
/* The order matches include/orangefs-types.h in the OrangeFS source. */
static int PINT_errno_mapping[] = {
0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM,
EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE,
EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG,
ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH,
EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM,
EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE,
ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE,
EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS,
ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY,
EACCES, ECONNRESET, ERANGE
};
int orangefs_normalize_to_errno(__s32 error_code)
{
__u32 i;
/* Success */
if (error_code == 0) {
return 0;
/*
* This shouldn't ever happen. If it does it should be fixed on the
* server.
*/
} else if (error_code > 0) {
gossip_err("orangefs: error status receieved.\n");
gossip_err("orangefs: assuming error code is inverted.\n");
error_code = -error_code;
}
/*
* XXX: This is very bad since error codes from ORANGEFS may not be
* suitable for return into userspace.
*/
/*
* Convert ORANGEFS error values into errno values suitable for return
* from the kernel.
*/
if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) {
if (((-error_code) &
(ORANGEFS_ERROR_NUMBER_BITS|ORANGEFS_NON_ERRNO_ERROR_BIT|
ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) {
/*
* cancellation error codes generally correspond to
* a timeout from the client's perspective
*/
error_code = -ETIMEDOUT;
} else {
/* assume a default error code */
gossip_err("orangefs: warning: got error code without errno equivalent: %d.\n", error_code);
error_code = -EINVAL;
}
/* Convert ORANGEFS encoded errno values into regular errno values. */
} else if ((-error_code) & ORANGEFS_ERROR_BIT) {
i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS);
if (i < sizeof(PINT_errno_mapping)/sizeof(*PINT_errno_mapping))
error_code = -PINT_errno_mapping[i];
else
error_code = -EINVAL;
/*
* Only ORANGEFS protocol error codes should ever come here. Otherwise
* there is a bug somewhere.
*/
} else {
gossip_err("orangefs: orangefs_normalize_to_errno: got error code which is not from ORANGEFS.\n");
}
return error_code;
}
#define NUM_MODES 11
__s32 ORANGEFS_util_translate_mode(int mode)
{
int ret = 0;
int i = 0;
static int modes[NUM_MODES] = {
S_IXOTH, S_IWOTH, S_IROTH,
S_IXGRP, S_IWGRP, S_IRGRP,
S_IXUSR, S_IWUSR, S_IRUSR,
S_ISGID, S_ISUID
};
static int orangefs_modes[NUM_MODES] = {
ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ,
ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ,
ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ,
ORANGEFS_G_SGID, ORANGEFS_U_SUID
};
for (i = 0; i < NUM_MODES; i++)
if (mode & modes[i])
ret |= orangefs_modes[i];
return ret;
}
#undef NUM_MODES
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