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SELinux: don't check permissions for kernel mounts

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Don't bother checking permissions when the kernel performs an
internal mount, as this should always be allowed.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
This commit is contained in:
James Morris 2008-12-19 11:41:10 +11:00
parent 12204e24b1
commit 7419224691
1 changed files with 4 additions and 0 deletions
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4
security/selinux/hooks.c
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@ -2484,6 +2484,10 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
if (rc)
return rc;
/* Allow all mounts performed by the kernel */
if (flags & MS_KERNMOUNT)
return 0;
AVC_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = sb->s_root;
return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);