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security: Add hook to invalidate inode security labels

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Add a hook to invalidate an inode's security label when the cached
information becomes invalid.

Add the new hook in selinux: set a flag when a security label becomes
invalid.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2015-12-24 11:09:40 -05:00 • committed by Paul Moore
parent 83da53c5a3
commit 6f3be9f562
5 changed files with 45 additions and 10 deletions
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8
security/security.c
View file

@ -1161,6 +1161,12 @@ void security_release_secctx(char *secdata, u32 seclen)
}
EXPORT_SYMBOL(security_release_secctx);
void security_inode_invalidate_secctx(struct inode *inode)
{
call_void_hook(inode_invalidate_secctx, inode);
}
EXPORT_SYMBOL(security_inode_invalidate_secctx);
int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
{
return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
@ -1763,6 +1769,8 @@ struct security_hook_heads security_hook_heads = {
LIST_HEAD_INIT(security_hook_heads.secctx_to_secid),
.release_secctx =
LIST_HEAD_INIT(security_hook_heads.release_secctx),
.inode_invalidate_secctx =
LIST_HEAD_INIT(security_hook_heads.inode_invalidate_secctx),
.inode_notifysecctx =
LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx),
.inode_setsecctx =