* winsup.api/systemcall.c: New file. Check for system call problems.

winsup/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+Thu Oct  4 22:19:39 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* winsup.api/systemcall.c: New file.  Check for system call problems.
+
 2001-09-20  Egor Duda  <deo@logos-m.ru>
 
 	* libltp/lib/get_high_address.c (get_high_address): Get inaccessible

winsup/testsuite/winsup.api/systemcall.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int
+main (int argc, char **argv)
+{
+  int fd, pid, n;
+  int fds[2];
+  static char buf[4096];
+
+  close (1);
+  if ((fd = open ("/dev/null", O_WRONLY)) != 1)
+    {
+      fprintf (stderr, "couldn't redirect stdout to /dev/null, fd %d - %s\n", fd, strerror ());
+      exit (1);
+    }
+  if (pipe (fds))
+    {
+      fprintf (stderr, "pipe call failed - %s\n", strerror ());
+      exit (1);
+    }
+  if ((pid = fork ()) == 0)
+    {
+      close (fds[0]);
+      if (dup2 (fds[1], 2) != 2)
+	{
+	  fprintf (stderr, "couldn't redirect stderr to pipe - %s\n", strerror ());
+	  exit (1);
+	}
+      exit (system ("ls"));
+    }
+  else if (pid < 0)
+    {
+      perror ("couldn't fork");
+      exit (1);
+    }
+
+  close (fds[1]);
+  if (read (fds[0], buf, 4096) != 0)
+    {
+      fprintf (stderr, "system call failed?\n%s\n", buf);
+      exit (1);
+    }
+
+  if (waitpid (pid, &n, 0) < 0)
+    {
+      perror ("waitpid failed");
+      exit (1);
+    }
+  if (n != 0)
+    {
+      fprintf (stderr, "system() call returend %p\n", n);
+      exit (1);
+    }
+  exit (0);
+}