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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
[cascardo/linux.git]
/
fs
/
btrfs
/
xattr.c
diff --git
a/fs/btrfs/xattr.c
b/fs/btrfs/xattr.c
index
69565e5
..
3848b04
100644
(file)
--- a/
fs/btrfs/xattr.c
+++ b/
fs/btrfs/xattr.c
@@
-127,6
+127,17
@@
static int do_setxattr(struct btrfs_trans_handle *trans,
again:
ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
name, name_len, value, size);
again:
ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
name, name_len, value, size);
+ /*
+ * If we're setting an xattr to a new value but the new value is say
+ * exactly BTRFS_MAX_XATTR_SIZE, we could end up with EOVERFLOW getting
+ * back from split_leaf. This is because it thinks we'll be extending
+ * the existing item size, but we're asking for enough space to add the
+ * item itself. So if we get EOVERFLOW just set ret to EEXIST and let
+ * the rest of the function figure it out.
+ */
+ if (ret == -EOVERFLOW)
+ ret = -EEXIST;
+
if (ret == -EEXIST) {
if (flags & XATTR_CREATE)
goto out;
if (ret == -EEXIST) {
if (flags & XATTR_CREATE)
goto out;
@@
-383,36
+394,36
@@
int btrfs_removexattr(struct dentry *dentry, const char *name)
XATTR_REPLACE);
}
XATTR_REPLACE);
}
-int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir,
- const struct qstr *qstr)
+int btrfs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+ void *fs_info)
{
{
- int err;
- size_t len;
- void *value;
- char *suffix;
+ const struct xattr *xattr;
+ struct btrfs_trans_handle *trans = fs_info;
char *name;
char *name;
+ int err = 0;
- err = security_inode_init_security(inode, dir, qstr, &suffix, &value,
- &len);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
-
- name = kmalloc(XATTR_SECURITY_PREFIX_LEN + strlen(suffix) + 1,
- GFP_NOFS);
- if (!name) {
- err = -ENOMEM;
- } else {
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+ name = kmalloc(XATTR_SECURITY_PREFIX_LEN +
+ strlen(xattr->name) + 1, GFP_NOFS);
+ if (!name) {
+ err = -ENOMEM;
+ break;
+ }
strcpy(name, XATTR_SECURITY_PREFIX);
strcpy(name, XATTR_SECURITY_PREFIX);
- strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
- err = __btrfs_setxattr(trans, inode, name, value, len, 0);
+ strcpy(name + XATTR_SECURITY_PREFIX_LEN, xattr->name);
+ err = __btrfs_setxattr(trans, inode, name,
+ xattr->value, xattr->value_len, 0);
kfree(name);
kfree(name);
+ if (err < 0)
+ break;
}
}
-
- kfree(suffix);
- kfree(value);
return err;
}
return err;
}
+
+int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &btrfs_initxattrs, trans);
+}