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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2015-12-02 14:44:36 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-12-07 03:33:52 +0100 |
| commit | 98e9cb5711c68223f0e4d5201b9a6add255ec550 (patch) | |
| tree | 12fee55d296fc85a6e8188368ca4944fc4d913a8 /fs/hfsplus | |
| parent | posix acls: Remove duplicate xattr name definitions (diff) | |
| download | linux-98e9cb5711c68223f0e4d5201b9a6add255ec550.tar.xz linux-98e9cb5711c68223f0e4d5201b9a6add255ec550.zip | |
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/hfsplus')
| -rw-r--r-- | fs/hfsplus/xattr.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index e41a010cd89c..ab01530b4930 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -431,9 +431,6 @@ int hfsplus_setxattr(struct dentry *dentry, const char *name, char *xattr_name; int res; - if (!strcmp(name, "")) - return -EINVAL; - xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, GFP_KERNEL); if (!xattr_name) @@ -589,9 +586,6 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, int res; char *xattr_name; - if (!strcmp(name, "")) - return -EINVAL; - xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, GFP_KERNEL); if (!xattr_name) @@ -853,9 +847,6 @@ static int hfsplus_osx_getxattr(const struct xattr_handler *handler, struct dentry *dentry, const char *name, void *buffer, size_t size) { - if (!strcmp(name, "")) - return -EINVAL; - /* * Don't allow retrieving properly prefixed attributes * by prepending them with "osx." @@ -876,9 +867,6 @@ static int hfsplus_osx_setxattr(const struct xattr_handler *handler, struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags) { - if (!strcmp(name, "")) - return -EINVAL; - /* * Don't allow setting properly prefixed attributes * by prepending them with "osx." |