From 23970741720360de9dd0a4e87fbeb1d5927aa474 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 25 Sep 2006 23:32:01 -0700 Subject: [PATCH] SELinux: change isec semaphore to a mutex This patch converts the remaining isec->sem into a mutex. Very similar locking is provided as before only in the faster smaller mutex rather than a semaphore. An out_unlock path is introduced rather than the conditional unlocking found in the original code. Signed-off-by: Eric Paris Acked-by: Stephen Smalley Acked-by: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- security/selinux/ss/services.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'security/selinux/ss/services.c') diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 988079f4529..0c219a1b324 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2578,7 +2578,7 @@ int selinux_netlbl_inode_permission(struct inode *inode, int mask) sock = SOCKET_I(inode); isec = inode->i_security; sksec = sock->sk->sk_security; - down(&isec->sem); + mutex_lock(&isec->lock); if (unlikely(sksec->nlbl_state == NLBL_REQUIRE && (mask & (MAY_WRITE | MAY_APPEND)))) { lock_sock(sock->sk); @@ -2586,7 +2586,7 @@ int selinux_netlbl_inode_permission(struct inode *inode, int mask) release_sock(sock->sk); } else rc = 0; - up(&isec->sem); + mutex_unlock(&isec->lock); return rc; } -- cgit v1.2.3