doc: use ASCII in .texi files where UTF-8 isn't needed

[gnulib.git] / tests / test-passfd.c

diff --git a/tests/test-passfd.c b/tests/test-passfd.c
index c132754..a61c0ec 100644 (file)
--- a/tests/test-passfd.c
+++ b/tests/test-passfd.c
@@ -1,5 +1,5 @@
-/* Test of terminating the current process.
-   Copyright (C) 2010-2011 Free Software Foundation, Inc.
+/* Test of passing file descriptors.
+   Copyright (C) 2011-2014 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -14,24 +14,27 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
-
 #include <config.h>
+
+#include "passfd.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
-#include "passfd.h"
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
-#include <fcntl.h>
-
+#include <sys/wait.h>
 
 #include "macros.h"
 
 int
 main ()
 {
+#if HAVE_SOCKETPAIR
   int pair[2];
   int ret;
   pid_t pid;
@@ -40,6 +43,13 @@ main ()
   int fd;
   struct stat st;
 
+# if HAVE_DECL_ALARM
+  /* Avoid hanging on failure.  */
+  int alarm_value = 5;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+# endif
+
   fdnull = open ("/dev/null", O_RDWR);
   if (fdnull < 0)
     {
@@ -57,7 +67,7 @@ main ()
   pid = fork ();
   if (pid == -1)
     {
-      perror ("fork:");
+      perror ("fork");
       return 3;
     }
   if (pid == 0)
@@ -65,7 +75,7 @@ main ()
       ret = sendfd (pair[1], fdnull);
       if (ret == -1)
         {
-          perror ("sendfd:");
+          perror ("sendfd");
           return 64;
         }
       return 0;
@@ -73,6 +83,7 @@ main ()
   /* father */
   else
     {
+      ASSERT (close (pair[1]) == 0);
       fd = recvfd (pair[0], 0);
       if (fd == -1)
         {
@@ -82,13 +93,12 @@ main ()
       ret = waitpid (pid, &status, 0);
       if (ret == -1)
         {
-          perror ("waitpid:");
+          perror ("waitpid");
           return 17;
         }
       ASSERT (ret == pid);
 
-      ret = WIFEXITED (status);
-      if (ret == 0)
+      if (!WIFEXITED (status))
         {
           fprintf (stderr, "Child does not normally exit\n");
           return 65;
@@ -96,17 +106,37 @@ main ()
       ret = WEXITSTATUS (status);
       if (ret != 0)
         {
-          fprintf (stderr, "Send fd fail");
+          fprintf (stderr, "Send fd fail\n");
           return ret;
         }
 
       /* try to stat new fd */
-      ret == fstat (fd, &st);
-      if (0 != ret)
+      ret = fstat (fd, &st);
+      if (ret < 0)
         {
-          perror("fstat:");
+          perror ("fstat");
           return 80;
         }
+
+      /* Check behavior when sender no longer around */
+      errno = 0;
+      fd = recvfd (pair[0], 0);
+      ASSERT (fd == -1);
+      ASSERT (errno == ENOTCONN);
+
       return 0;
     }
+#else
+  errno = 0;
+  ASSERT(sendfd (0, 0) == -1);
+  ASSERT(errno == ENOSYS);
+
+  errno = 0;
+  ASSERT(recvfd (0, 0) == -1);
+  ASSERT(errno == ENOSYS);
+
+  fputs ("skipping test: socketpair not supported on this system\n",
+         stderr);
+  return 77;
+#endif
 }