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-rw-r--r--src/thread/pthread_mutex_consistent.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/thread/pthread_mutex_consistent.c b/src/thread/pthread_mutex_consistent.c
new file mode 100644
index 00000000..7dfb904f
--- /dev/null
+++ b/src/thread/pthread_mutex_consistent.c
@@ -0,0 +1,10 @@
+#include "pthread_impl.h"
+
+int pthread_mutex_consistent(pthread_mutex_t *m)
+{
+	if (m->_m_type < 8) return EINVAL;
+	if ((m->_m_lock & 0x3fffffff) != pthread_self()->tid)
+		return EPERM;
+	m->_m_type -= 8;
+	return 0;
+}