diff options
Diffstat (limited to 'nptl/pthread_mutex_getprioceiling.c')
| -rw-r--r-- | nptl/pthread_mutex_getprioceiling.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nptl/pthread_mutex_getprioceiling.c b/nptl/pthread_mutex_getprioceiling.c index 4d1bc28431..1ce5eaebef 100644 --- 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; |