fix return of pthread_sigmask, as it needs to be errno in case of a e…

…rror and not what sigprocmask gives back

src/Makefile.kmk

@@ -20,6 +20,7 @@ LIBRARIES = pthread_s pthread_g pthread_dll
 
 pthread_s_SOURCES = \
 	pthread_attr.c \
+	pthread_sigmask.c \
 	rwlock.c \
 	my_os2cond.c \
 	my_os2mutex.c \

src/pthread.def

@@ -62,3 +62,4 @@ _pthread_rwlock_tryrdlock
 _pthread_rwlock_rdlock
 _pthread_rwlock_trywrlock
 _pthread_rwlock_wrlock
+_pthread_sigmask

src/pthread.h

@@ -4,6 +4,7 @@
 
 #include <errno.h>
 #include <time.h>
+#include <signal.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -91,7 +92,7 @@ void  pthread_setprio( int, int);
 int pthread_detach (pthread_t thread);
 int pthread_kill (pthread_t thread, int sig);
 
-#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
+int pthread_sigmask(int, const sigset_t *, sigset_t *);
 
 /*
  * PThread Attribute Functions

src/pthread_sigmask.c

@@ -0,0 +1,10 @@
+#include <errno.h>
+#include <signal.h>
+
+#include "pthread.h"
+
+int pthread_sigmask(int how, const sigset_t *newmask, sigset_t *oldmask)
+{
+  return sigprocmask(how, newmask, oldmask) == -1 ? errno : 0;
+}
+