diff options
| author | David S. Miller <davem@davemloft.net> | 2017-06-06 22:20:08 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-06 22:20:08 -0400 |
| commit | 216fe8f021e33c36e3b27c49c9f1951f6b037d7f (patch) | |
| tree | a43daec41b4d3955e7a4f8d0ed0654a7c80527ec /fs/overlayfs/inode.c | |
| parent | 9747e2313838ee8f5d8073fd6aa7289255c3c51b (diff) | |
| parent | b29794ec95c6856b316c2295904208bf11ffddd9 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just some simple overlapping changes in marvell PHY driver
and the DSA core code.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/overlayfs/inode.c')
| -rw-r--r-- | fs/overlayfs/inode.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index ad9547f82da5..d613e2c41242 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -240,6 +240,16 @@ int ovl_xattr_get(struct dentry *dentry, const char *name, return res; } +static bool ovl_can_list(const char *s) +{ + /* List all non-trusted xatts */ + if (strncmp(s, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) != 0) + return true; + + /* Never list trusted.overlay, list other trusted for superuser only */ + return !ovl_is_private_xattr(s) && capable(CAP_SYS_ADMIN); +} + ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) { struct dentry *realdentry = ovl_dentry_real(dentry); @@ -263,7 +273,7 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) return -EIO; len -= slen; - if (ovl_is_private_xattr(s)) { + if (!ovl_can_list(s)) { res -= slen; memmove(s, s + slen, len); } else { |