reiserfs: use generic xattr handlers
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>
diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c
index 1384efc..e3238dc 100644
--- a/fs/reiserfs/xattr_user.c
+++ b/fs/reiserfs/xattr_user.c
@@ -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 @@
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 @@
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,
};