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reiserfs: use generic xattr handlers

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Christoph Hellwig had asked me quite some time ago to port the reiserfs
xattrs to the generic xattr interface.

This patch replaces the reiserfs-specific xattr handling code with the
generic struct xattr_handler.

However, since reiserfs doesn't split the prefix and name when accessing
xattrs, it can't leverage generic_{set,get,list,remove}xattr without
needlessly reconstructing the name on the back end.

Update 7/26/07: Added missing dput() to deletion path.
Update 8/30/07: Added missing mark_inode_dirty when i_mode is used to
                represent an ACL and no previous ACL existed.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Mahoney
2009-03-30 14:02:38 -04:00
committed by Linus Torvalds
parent 8ecbe550a1
commit 48b32a3553
9 changed files with 259 additions and 442 deletions
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31
fs/reiserfs/xattr_user.c
View File

@@ -6,10 +6,6 @@
#include <linux/reiserfs_xattr.h>
#include <asm/uaccess.h>
#ifdef CONFIG_REISERFS_FS_POSIX_ACL
# include <linux/reiserfs_acl.h>
#endif
static int
user_get(struct inode *inode, const char *name, void *buffer, size_t size)
{
@@ -25,7 +21,6 @@ static int
user_set(struct inode *inode, const char *name, const void *buffer,
size_t size, int flags)
{
if (strlen(name) < sizeof(XATTR_USER_PREFIX))
return -EINVAL;
@@ -34,33 +29,23 @@ user_set(struct inode *inode, const char *name, const void *buffer,
return reiserfs_xattr_set(inode, name, buffer, size, flags);
}
static int user_del(struct inode *inode, const char *name)
static size_t user_list(struct inode *inode, char *list, size_t list_size,
const char *name, size_t name_len)
{
if (strlen(name) < sizeof(XATTR_USER_PREFIX))
return -EINVAL;
const size_t len = name_len + 1;
if (!reiserfs_xattrs_user(inode->i_sb))
return -EOPNOTSUPP;
return 0;
}
static int
user_list(struct inode *inode, const char *name, int namelen, char *out)
{
int len = namelen;
if (!reiserfs_xattrs_user(inode->i_sb))
return 0;
if (out)
memcpy(out, name, len);
if (list && len <= list_size) {
memcpy(list, name, name_len);
list[name_len] = '\0';
}
return len;
}
struct reiserfs_xattr_handler user_handler = {
struct xattr_handler reiserfs_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.get = user_get,
.set = user_set,
.del = user_del,
.list = user_list,
};