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| author | J. Bruce Fields <bfields@redhat.com> | 2015-06-04 15:57:25 -0400 |
|---|---|---|
| committer | Paul Moore <pmoore@redhat.com> | 2015-06-05 14:21:48 -0400 |
| commit | 9fc2b4b436cff7d8403034676014f1be9d534942 (patch) | |
| tree | 08507047792c89c8a8c384df14ce3fddc04adbad /security | |
| parent | 42a9699a9fa179c0054ea3cf5ad3cc67104a6162 (diff) | |
| download | lwn-9fc2b4b436cff7d8403034676014f1be9d534942.tar.gz lwn-9fc2b4b436cff7d8403034676014f1be9d534942.zip | |
selinux: fix setting of security labels on NFS
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>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/hooks.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index daf59b4bc02b..312537d48050 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -403,6 +403,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb) return sbsec->behavior == SECURITY_FS_USE_XATTR || sbsec->behavior == SECURITY_FS_USE_TRANS || sbsec->behavior == SECURITY_FS_USE_TASK || + sbsec->behavior == SECURITY_FS_USE_NATIVE || /* Special handling. Genfs but also in-core setxattr handler */ !strcmp(sb->s_type->name, "sysfs") || !strcmp(sb->s_type->name, "pstore") || |