security: Add hook to invalidate inode security labels
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>
diff --git a/security/security.c b/security/security.c
index c5beb7e..e8ffd92 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1161,6 +1161,12 @@
}
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 @@
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 =