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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> | 2015-12-06 21:33:52 -0500 |
| commit | 98e9cb5711c68223f0e4d5201b9a6add255ec550 (patch) | |
| tree | 12fee55d296fc85a6e8188368ca4944fc4d913a8 /fs/ext4/xattr_security.c | |
| parent | 97d79299223baab330b194437e676d301f12d5f6 (diff) | |
| download | lwn-98e9cb5711c68223f0e4d5201b9a6add255ec550.tar.gz lwn-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/ext4/xattr_security.c')
| -rw-r--r-- | fs/ext4/xattr_security.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c index 36f4c1a84c21..195abc4a88bb 100644 --- a/fs/ext4/xattr_security.c +++ b/fs/ext4/xattr_security.c @@ -33,8 +33,6 @@ ext4_xattr_security_get(const struct xattr_handler *handler, struct dentry *dentry, const char *name, void *buffer, size_t size) { - if (strcmp(name, "") == 0) - return -EINVAL; return ext4_xattr_get(d_inode(dentry), EXT4_XATTR_INDEX_SECURITY, name, buffer, size); } @@ -44,8 +42,6 @@ ext4_xattr_security_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; return ext4_xattr_set(d_inode(dentry), EXT4_XATTR_INDEX_SECURITY, name, value, size, flags); } |