X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_mutex_consistent.c;h=27c74e5b6a0100ed18d826eeff3b994917160617;hb=e2e9517607f67c1e23c059769b19bf4270d22123;hp=65da29fa88a25b4f652b1492f5206d7499ab85c3;hpb=df15168cf8baf34fb9c94e19eaa1a5c79c853970;p=musl

diff --git a/src/thread/pthread_mutex_consistent.c b/src/thread/pthread_mutex_consistent.c
index 65da29fa..27c74e5b 100644
--- a/src/thread/pthread_mutex_consistent.c
+++ b/src/thread/pthread_mutex_consistent.c
@@ -1,10 +1,14 @@
 #include "pthread_impl.h"
+#include "atomic.h"
 
 int pthread_mutex_consistent(pthread_mutex_t *m)
 {
-	if (m->_m_type < 8) return EINVAL;
-	if ((m->_m_lock & 0x3fffffff) != __pthread_self()->tid)
+	int old = m->_m_lock;
+	int own = old & 0x3fffffff;
+	if (!(m->_m_type & 4) || !own || !(old & 0x40000000))
+		return EINVAL;
+	if (own != __pthread_self()->tid)
 		return EPERM;
-	m->_m_type -= 8;
+	a_and(&m->_m_lock, ~0x40000000);
 	return 0;
 }