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| author | J. Bruce Fields <bfields@redhat.com> | 2015-06-04 22:57:25 +0300 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-07-15 12:00:21 +0300 |
| commit | c719ae8f2c4ef8a71a08bd02b1eef2210257095e (patch) | |
| tree | 9fbe1657960c99c45bdc929b47d5ff8e0aceba94 /security | |
| parent | 38cadff8a6b5796d61d2a7d4c897986b9c435b64 (diff) | |
| download | linux-c719ae8f2c4ef8a71a08bd02b1eef2210257095e.tar.xz | |
selinux: fix setting of security labels on NFS
commit 9fc2b4b436cff7d8403034676014f1be9d534942 upstream.
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: 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>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'security')
| -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 a2aa95ecd1d5..9a23a7cccdc4 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -394,7 +394,8 @@ 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*/ |