From 9fc2b4b436cff7d8403034676014f1be9d534942 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Thu, 4 Jun 2015 15:57:25 -0400 Subject: 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 Cc: David Quigley Reported-by: Richard Chan Signed-off-by: J. Bruce Fields Acked-by: Stephen Smalley [PM: added the stable dependency] Signed-off-by: Paul Moore --- security/selinux/hooks.c | 1 + 1 file changed, 1 insertion(+) (limited to 'security') 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") || -- cgit v1.2.3-59-g8ed1b