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authorAndreas Gruenbacher <agruenba@redhat.com>2015-12-02 16:44:36 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2015-12-07 05:33:52 +0300
commit98e9cb5711c68223f0e4d5201b9a6add255ec550 (patch)
tree12fee55d296fc85a6e8188368ca4944fc4d913a8 /fs/ext2/xattr_user.c
parent97d79299223baab330b194437e676d301f12d5f6 (diff)
downloadlinux-98e9cb5711c68223f0e4d5201b9a6add255ec550.tar.xz
vfs: Distinguish between full xattr names and proper prefixes
Add an additional "name" field to struct xattr_handler. When the name is set, the handler matches attributes with exactly that name. When the prefix is set instead, the handler matches attributes with the given prefix and with a non-empty suffix. This patch should avoid bugs like the one fixed in commit c361016a in the future. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: James Morris <james.l.morris@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ext2/xattr_user.c')
-rw-r--r--fs/ext2/xattr_user.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c
index 339a49bbb8ef..afd45ab1218c 100644
--- a/fs/ext2/xattr_user.c
+++ b/fs/ext2/xattr_user.c
@@ -34,8 +34,6 @@ ext2_xattr_user_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
- if (strcmp(name, "") == 0)
- return -EINVAL;
if (!test_opt(dentry->d_sb, XATTR_USER))
return -EOPNOTSUPP;
return ext2_xattr_get(d_inode(dentry), EXT2_XATTR_INDEX_USER,
@@ -47,8 +45,6 @@ ext2_xattr_user_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
- if (strcmp(name, "") == 0)
- return -EINVAL;
if (!test_opt(dentry->d_sb, XATTR_USER))
return -EOPNOTSUPP;