diff options
| author | J. Bruce Fields <bfields@redhat.com> | 2015-06-04 15:57:25 -0400 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-07-20 21:12:42 -0400 |
| commit | f0f61c29dfb02b38431cef9058044a86bfa8f0cc (patch) | |
| tree | 2b255401a60ee335832d97b02ed272cd3029e9fd | |
| parent | 00bd69b2ec9d3d4fabb1d00fb90756fe22c3ba4d (diff) | |
selinux: fix setting of security labels on NFS
[ Upstream commit 9fc2b4b436cff7d8403034676014f1be9d534942 ]
Before calling into the filesystem, vfs_setxattr calls
security_inode_setxattr, which ends up calling selinux_inode_setxattr in
our case. That returns -EOPNOTSUPP whenever SBLABEL_MNT is not set.
SBLABEL_MNT was supposed to be set by sb_finish_set_opts, which sets it
only if selinux_is_sblabel_mnt returns true.
The selinux_is_sblabel_mnt logic was broken by eadcabc697e9 "SELinux: do
all flags twiddling in one place", which didn't take into the account
the SECURITY_FS_USE_NATIVE behavior that had been introduced for nfs
with eb9ae686507b "SELinux: Add new labeling type native labels".
This caused setxattr's of security labels over NFSv4.2 to fail.
Cc: stable@kernel.org # 3.13
Cc: Eric Paris <eparis@redhat.com>
Cc: David Quigley <dpquigl@davequigley.com>
Reported-by: Richard Chan <rc556677@outlook.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
[PM: added the stable dependency]
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | security/selinux/hooks.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index c603b20356ad..b1e455b47b82 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -405,7 +405,8 @@ static int selinux_is_sblabel_mnt(struct super_block *sb) if (sbsec->behavior == SECURITY_FS_USE_XATTR || sbsec->behavior == SECURITY_FS_USE_TRANS || - sbsec->behavior == SECURITY_FS_USE_TASK) + sbsec->behavior == SECURITY_FS_USE_TASK || + sbsec->behavior == SECURITY_FS_USE_NATIVE) return 1; /* Special handling for sysfs. Is genfs but also has setxattr handler*/ |