wait.c: use cancel.h

Use __wait4_nocancel, since wait4 is not available all the time

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/sysdeps/linux/common/wait.c

@@ -4,41 +4,11 @@
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-#include <stdlib.h>
-#include <syscall.h>
-#include <sys/types.h>
 #include <sys/wait.h>
-#include <sys/resource.h>
+#include <cancel.h>
 
-extern __typeof(wait) __libc_wait;
-/* Wait for a child to die.  When one does, put its status in *STAT_LOC
- * and return its process ID.  For errors, return (pid_t) -1.  */
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-#include <errno.h>
-#include <sysdep-cancel.h>
-
-pid_t attribute_hidden
-__libc_wait (__WAIT_STATUS_DEFN stat_loc)
-{
-  if (SINGLE_THREAD_P)
-    return INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0,
-			   (struct rusage *) NULL);
-
-  int oldtype = LIBC_CANCEL_ASYNC ();
-
-  pid_t result = INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0,
-				 (struct rusage *) NULL);
-
-  LIBC_CANCEL_RESET (oldtype);
-
-  return result;
-}
-#else
-/* Wait for a child to die.  When one does, put its status in *STAT_LOC
- * and return its process ID.  For errors, return (pid_t) -1.  */
-__pid_t __libc_wait (__WAIT_STATUS_DEFN stat_loc)
+static pid_t __NC(wait)(__WAIT_STATUS_DEFN stat_loc)
 {
-      return wait4 (WAIT_ANY, stat_loc, 0, (struct rusage *) NULL);
+	return __wait4_nocancel(WAIT_ANY, stat_loc, 0, (struct rusage *)NULL);
 }
-#endif
-weak_alias(__libc_wait,wait)
+CANCELLABLE_SYSCALL(pid_t, wait, (__WAIT_STATUS_DEFN stat_loc), (stat_loc))