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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2015-10-04 19:18:50 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-11-13 20:34:30 -0500 |
| commit | bf781714b3e1421a0ebcd0137d081e6566a89f15 (patch) | |
| tree | 63c53e010b663b46a3eb9db757ce8da0fac75bf3 /fs/jffs2 | |
| parent | e282fb7f3bce68089ae2b40c227b015c23764a38 (diff) | |
| download | linux-stable-bf781714b3e1421a0ebcd0137d081e6566a89f15.tar.gz linux-stable-bf781714b3e1421a0ebcd0137d081e6566a89f15.tar.bz2 linux-stable-bf781714b3e1421a0ebcd0137d081e6566a89f15.zip | |
jffs2: Add missing capability check for listing trusted xattrs
The vfs checks if a task has the appropriate access for get and set
operations, but it cannot do that for the list operation; the file system
must check for that itself.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jffs2')
| -rw-r--r-- | fs/jffs2/xattr_trusted.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c index ceaf9c693225..bbd20c16090e 100644 --- a/fs/jffs2/xattr_trusted.c +++ b/fs/jffs2/xattr_trusted.c @@ -39,6 +39,9 @@ static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list, { size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1; + if (!capable(CAP_SYS_ADMIN)) + return 0; + if (list && retlen<=list_size) { strcpy(list, XATTR_TRUSTED_PREFIX); strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name); |