* sysdeps/powerpc/powerpc32/dl-trampoline.S (_dl_runtime_resolve):

[glibc.git] / nptl / pthread_mutex_getprioceiling.c

diff --git a/nptl/pthread_mutex_getprioceiling.c b/nptl/pthread_mutex_getprioceiling.c
index 4d1bc2843113275f4ccb1b16f6001210f65257a5..1ce5eaebefa5e67242a3c1735f01d22e405c85a3 100644 (file)
--- a/nptl/pthread_mutex_getprioceiling.c
+++ b/nptl/pthread_mutex_getprioceiling.c
@@ -18,6 +18,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <pthreadP.h>
 
 
@@ -26,7 +27,11 @@ pthread_mutex_getprioceiling (mutex, prioceiling)
      const pthread_mutex_t *mutex;
      int *prioceiling;
 {
-  *prioceiling = (mutex->__data.__kind & PTHREAD_MUTEX_PRIO_CEILING_MASK)
+  if (__builtin_expect ((mutex->__data.__kind
+                        & PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0, 0))
+    return EINVAL;
+
+  *prioceiling = (mutex->__data.__lock & PTHREAD_MUTEX_PRIO_CEILING_MASK)
                 >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
 
   return 0;