diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index ec15a5694b9e..b222e966babe 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -354,6 +354,29 @@ static int may_context_mount_inode_relabel(u32 sid, return rc; } +static int selinux_is_sblabel_mnt(struct super_block *sb) +{ + struct superblock_security_struct *sbsec = sb->s_security; + + if (sbsec->behavior == SECURITY_FS_USE_XATTR || + sbsec->behavior == SECURITY_FS_USE_TRANS || + sbsec->behavior == SECURITY_FS_USE_TASK) + return 1; + + /* Special handling for sysfs. Is genfs but also has setxattr handler*/ + if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0) + return 1; + + /* + * Special handling for rootfs. Is genfs but supports + * setting SELinux context on in-core inodes. + */ + if (strncmp(sb->s_type->name, "rootfs", sizeof("rootfs")) == 0) + return 1; + + return 0; +} + static int sb_finish_set_opts(struct super_block *sb) { struct superblock_security_struct *sbsec = sb->s_security; @@ -396,20 +419,7 @@ static int sb_finish_set_opts(struct super_block *sb) labeling_behaviors[sbsec->behavior-1]); sbsec->flags |= SE_SBINITIALIZED; - if (sbsec->behavior == SECURITY_FS_USE_XATTR || - sbsec->behavior == SECURITY_FS_USE_TRANS || - sbsec->behavior == SECURITY_FS_USE_TASK) - sbsec->flags |= SBLABEL_MNT; - - /* Special handling for sysfs. Is genfs but also has setxattr handler*/ - if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0) - sbsec->flags |= SBLABEL_MNT; - - /* - * Special handling for rootfs. Is genfs but supports - * setting SELinux context on in-core inodes. - */ - if (strncmp(sb->s_type->name, "rootfs", sizeof("rootfs")) == 0) + if (selinux_is_sblabel_mnt(sb)) sbsec->flags |= SBLABEL_MNT; /* Initialize the root inode. */ |