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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

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Pull Ceph fixes from Sage Weil:
 "We have some patches fixing up ACL support issues from Zheng and
  Guangliang and a mount option to enable/disable this support.  (These
  fixes were somewhat delayed by the Chinese holiday.)

  There is also a small fix for cached readdir handling when directories
  are fragmented"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: fix __dcache_readdir()
  ceph: add acl, noacl options for cephfs mount
  ceph: make ceph_forget_all_cached_acls() static inline
  ceph: add missing init_acl() for mkdir() and atomic_open()
  ceph: fix ceph_set_acl()
  ceph: fix ceph_removexattr()
  ceph: remove xattr when null value is given to setxattr()
  ceph: properly handle XATTR_CREATE and XATTR_REPLACE
This commit is contained in:
Linus Torvalds 2014-02-17 13:51:00 -08:00
commit 87eeff7974
7 changed files with 96 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
fs/ceph/acl.c
View File

@ -54,11 +54,6 @@ static inline struct posix_acl *ceph_get_cached_acl(struct inode *inode,
return acl;
}
void ceph_forget_all_cached_acls(struct inode *inode)
{
forget_all_cached_acls(inode);
}
struct posix_acl *ceph_get_acl(struct inode *inode, int type)
{
int size;
@ -160,11 +155,7 @@ int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type)
goto out_dput;
}
if (value)
ret = __ceph_setxattr(dentry, name, value, size, 0);
else
ret = __ceph_removexattr(dentry, name);
ret = __ceph_setxattr(dentry, name, value, size, 0);
if (ret) {
if (new_mode != old_mode) {
newattrs.ia_mode = old_mode;

23
fs/ceph/dir.c
View File

@ -100,6 +100,14 @@ static unsigned fpos_off(loff_t p)
return p & 0xffffffff;
}
static int fpos_cmp(loff_t l, loff_t r)
{
int v = ceph_frag_compare(fpos_frag(l), fpos_frag(r));
if (v)
return v;
return (int)(fpos_off(l) - fpos_off(r));
}
/*
* When possible, we try to satisfy a readdir by peeking at the
* dcache. We make this work by carefully ordering dentries on
@ -156,7 +164,7 @@ more:
if (!d_unhashed(dentry) && dentry->d_inode &&
ceph_snap(dentry->d_inode) != CEPH_SNAPDIR &&
ceph_ino(dentry->d_inode) != CEPH_INO_CEPH &&
ctx->pos <= di->offset)
fpos_cmp(ctx->pos, di->offset) <= 0)
break;
dout(" skipping %p %.*s at %llu (%llu)%s%s\n", dentry,
dentry->d_name.len, dentry->d_name.name, di->offset,
@ -695,9 +703,8 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
ceph_mdsc_put_request(req);
if (!err)
err = ceph_init_acl(dentry, dentry->d_inode, dir);
if (err)
ceph_init_acl(dentry, dentry->d_inode, dir);
else
d_drop(dentry);
return err;
}
@ -735,7 +742,9 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
if (!err && !req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
ceph_mdsc_put_request(req);
if (err)
if (!err)
ceph_init_acl(dentry, dentry->d_inode, dir);
else
d_drop(dentry);
return err;
}
@ -776,7 +785,9 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
err = ceph_handle_notrace_create(dir, dentry);
ceph_mdsc_put_request(req);
out:
if (err < 0)
if (!err)
ceph_init_acl(dentry, dentry->d_inode, dir);
else
d_drop(dentry);
return err;
}

1
fs/ceph/file.c
View File

@ -286,6 +286,7 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
} else {
dout("atomic_open finish_open on dn %p\n", dn);
if (req->r_op == CEPH_MDS_OP_CREATE && req->r_reply_info.has_create_ino) {
ceph_init_acl(dentry, dentry->d_inode, dir);
*opened |= FILE_CREATED;
}
err = finish_open(file, dentry, ceph_open, opened);

32
fs/ceph/super.c
View File

@ -144,7 +144,11 @@ enum {
Opt_ino32,
Opt_noino32,
Opt_fscache,
Opt_nofscache
Opt_nofscache,
#ifdef CONFIG_CEPH_FS_POSIX_ACL
Opt_acl,
#endif
Opt_noacl
};
static match_table_t fsopt_tokens = {
@ -172,6 +176,10 @@ static match_table_t fsopt_tokens = {
{Opt_noino32, "noino32"},
{Opt_fscache, "fsc"},
{Opt_nofscache, "nofsc"},
#ifdef CONFIG_CEPH_FS_POSIX_ACL
{Opt_acl, "acl"},
#endif
{Opt_noacl, "noacl"},
{-1, NULL}
};
@ -271,6 +279,14 @@ static int parse_fsopt_token(char *c, void *private)
case Opt_nofscache:
fsopt->flags &= ~CEPH_MOUNT_OPT_FSCACHE;
break;
#ifdef CONFIG_CEPH_FS_POSIX_ACL
case Opt_acl:
fsopt->sb_flags |= MS_POSIXACL;
break;
#endif
case Opt_noacl:
fsopt->sb_flags &= ~MS_POSIXACL;
break;
default:
BUG_ON(token);
}
@ -438,6 +454,13 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
else
seq_puts(m, ",nofsc");
#ifdef CONFIG_CEPH_FS_POSIX_ACL
if (fsopt->sb_flags & MS_POSIXACL)
seq_puts(m, ",acl");
else
seq_puts(m, ",noacl");
#endif
if (fsopt->wsize)
seq_printf(m, ",wsize=%d", fsopt->wsize);
if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
@ -819,9 +842,6 @@ static int ceph_set_super(struct super_block *s, void *data)
s->s_flags = fsc->mount_options->sb_flags;
s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */
#ifdef CONFIG_CEPH_FS_POSIX_ACL
s->s_flags |= MS_POSIXACL;
#endif
s->s_xattr = ceph_xattr_handlers;
s->s_fs_info = fsc;
@ -911,6 +931,10 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
struct ceph_options *opt = NULL;
dout("ceph_mount\n");
#ifdef CONFIG_CEPH_FS_POSIX_ACL
flags |= MS_POSIXACL;
#endif
err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path);
if (err < 0) {
res = ERR_PTR(err);

7
fs/ceph/super.h
View File

@ -13,6 +13,7 @@
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/slab.h>
#include <linux/posix_acl.h>
#include <linux/ceph/libceph.h>
@ -743,7 +744,11 @@ extern const struct xattr_handler *ceph_xattr_handlers[];
struct posix_acl *ceph_get_acl(struct inode *, int);
int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type);
int ceph_init_acl(struct dentry *, struct inode *, struct inode *);
void ceph_forget_all_cached_acls(struct inode *inode);
static inline void ceph_forget_all_cached_acls(struct inode *inode)
{
forget_all_cached_acls(inode);
}
#else

54
fs/ceph/xattr.c
View File

@ -12,6 +12,9 @@
#define XATTR_CEPH_PREFIX "ceph."
#define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1)
static int __remove_xattr(struct ceph_inode_info *ci,
struct ceph_inode_xattr *xattr);
/*
* List of handlers for synthetic system.* attributes. Other
* attributes are handled directly.
@ -319,8 +322,7 @@ static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode,
static int __set_xattr(struct ceph_inode_info *ci,
const char *name, int name_len,
const char *val, int val_len,
int dirty,
int should_free_name, int should_free_val,
int flags, int update_xattr,
struct ceph_inode_xattr **newxattr)
{
struct rb_node **p;
@ -349,12 +351,31 @@ static int __set_xattr(struct ceph_inode_info *ci,
xattr = NULL;
}
if (update_xattr) {
int err = 0;
if (xattr && (flags & XATTR_CREATE))
err = -EEXIST;
else if (!xattr && (flags & XATTR_REPLACE))
err = -ENODATA;
if (err) {
kfree(name);
kfree(val);
return err;
}
if (update_xattr < 0) {
if (xattr)
__remove_xattr(ci, xattr);
kfree(name);
return 0;
}
}
if (!xattr) {
new = 1;
xattr = *newxattr;
xattr->name = name;
xattr->name_len = name_len;
xattr->should_free_name = should_free_name;
xattr->should_free_name = update_xattr;
ci->i_xattrs.count++;
dout("__set_xattr count=%d\n", ci->i_xattrs.count);
@ -364,7 +385,7 @@ static int __set_xattr(struct ceph_inode_info *ci,
if (xattr->should_free_val)
kfree((void *)xattr->val);
if (should_free_name) {
if (update_xattr) {
kfree((void *)name);
name = xattr->name;
}
@ -379,8 +400,8 @@ static int __set_xattr(struct ceph_inode_info *ci,
xattr->val = "";
xattr->val_len = val_len;
xattr->dirty = dirty;
xattr->should_free_val = (val && should_free_val);
xattr->dirty = update_xattr;
xattr->should_free_val = (val && update_xattr);
if (new) {
rb_link_node(&xattr->node, parent, p);
@ -442,7 +463,7 @@ static int __remove_xattr(struct ceph_inode_info *ci,
struct ceph_inode_xattr *xattr)
{
if (!xattr)
return -EOPNOTSUPP;
return -ENODATA;
rb_erase(&xattr->node, &ci->i_xattrs.index);
@ -588,7 +609,7 @@ start:
p += len;
err = __set_xattr(ci, name, namelen, val, len,
0, 0, 0, &xattrs[numattr]);
0, 0, &xattrs[numattr]);
if (err < 0)
goto bad;
@ -850,6 +871,9 @@ static int ceph_sync_setxattr(struct dentry *dentry, const char *name,
dout("setxattr value=%.*s\n", (int)size, value);
if (!value)
flags |= CEPH_XATTR_REMOVE;
/* do request */
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETXATTR,
USE_AUTH_MDS);
@ -892,7 +916,7 @@ int __ceph_setxattr(struct dentry *dentry, const char *name,
struct ceph_inode_info *ci = ceph_inode(inode);
int issued;
int err;
int dirty;
int dirty = 0;
int name_len = strlen(name);
int val_len = size;
char *newname = NULL;
@ -953,12 +977,14 @@ retry:
goto retry;
}
err = __set_xattr(ci, newname, name_len, newval,
val_len, 1, 1, 1, &xattr);
err = __set_xattr(ci, newname, name_len, newval, val_len,
flags, value ? 1 : -1, &xattr);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
if (!err) {
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
}
spin_unlock(&ci->i_ceph_lock);
if (dirty)

5
include/linux/ceph/ceph_fs.h
View File

@ -373,8 +373,9 @@ extern const char *ceph_mds_op_name(int op);
/*
* Ceph setxattr request flags.
*/
#define CEPH_XATTR_CREATE 1
#define CEPH_XATTR_REPLACE 2
#define CEPH_XATTR_CREATE (1 << 0)
#define CEPH_XATTR_REPLACE (1 << 1)
#define CEPH_XATTR_REMOVE (1 << 31)
union ceph_mds_request_args {
struct {