fdwalk should return 0 on an empty directory

[kopensolaris-gnu/glibc.git] / test-skeleton.c

diff --git a/test-skeleton.c b/test-skeleton.c
index 2b5102b..23e4012 100644 (file)
--- a/test-skeleton.c
+++ b/test-skeleton.c
@@ -1,5 +1,5 @@
 /* Skeleton for test programs.
-   Copyright (C) 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1998,2000-2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -18,7 +18,9 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <getopt.h>
+#include <malloc.h>
 #include <search.h>
 #include <signal.h>
 #include <stdio.h>
@@ -27,6 +29,8 @@
 #include <unistd.h>
 #include <sys/resource.h>
 #include <sys/wait.h>
+#include <sys/param.h>
+#include <time.h>
 
 /* The test function is normally called `do_test' and it is called
    with argc and argv as the arguments.  We nevertheless provide the
@@ -35,6 +39,9 @@
 # define TEST_FUNCTION do_test (argc, argv)
 #endif
 
+#ifndef TEST_DATA_LIMIT
+# define TEST_DATA_LIMIT (64 << 20) /* Data limit (bytes) to run with.  */
+#endif
 
 #define OPT_DIRECT 1000
 #define OPT_TESTDIR 1001
@@ -134,10 +141,25 @@ timeout_handler (int sig __attribute__ ((unused)))
   kill (pid, SIGKILL);
 
   /* Wait for it to terminate.  */
-  killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
+  int i;
+  for (i = 0; i < 5; ++i)
+    {
+      killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
+      if (killed != 0)
+       break;
+
+      /* Delay, give the system time to process the kill.  If the
+        nanosleep() call return prematurely, all the better.  We
+        won't restart it since this probably means the child process
+        finally died.  */
+      struct timespec ts;
+      ts.tv_sec = 0;
+      ts.tv_nsec = 100000000;
+      nanosleep (&ts, NULL);
+    }
   if (killed != 0 && killed != pid)
     {
-      perror ("Failed to killed test process");
+      perror ("Failed to kill test process");
       exit (1);
     }
 
@@ -151,7 +173,7 @@ timeout_handler (int sig __attribute__ ((unused)))
     exit (0);
 #endif
 
-  if (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL)
+  if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
     fputs ("Timed out: killed the child process\n", stderr);
   else if (WIFSTOPPED (status))
     fprintf (stderr, "Timed out: the child process was %s\n",
@@ -174,13 +196,17 @@ main (int argc, char *argv[])
   int direct = 0;      /* Directly call the test function?  */
   int status;
   int opt;
+  unsigned int timeoutfactor = 1;
   pid_t termpid;
 
+  /* Make uses of freed and uninitialized memory known.  */
+  mallopt (M_PERTURB, 42);
+
 #ifdef STDOUT_UNBUFFERED
   setbuf (stdout, NULL);
 #endif
 
-  while ((opt = getopt_long (argc, argv, "", options, NULL)) != -1)
+  while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
     switch (opt)
       {
       case '?':
@@ -196,6 +222,19 @@ main (int argc, char *argv[])
 #endif
       }
 
+  /* If set, read the test TIMEOUTFACTOR value from the environment.
+     This value is used to scale the default test timeout values. */
+  char *envstr_timeoutfactor = getenv ("TIMEOUTFACTOR");
+  if (envstr_timeoutfactor != NULL)
+    {
+      char *envstr_conv = envstr_timeoutfactor;
+      unsigned long int env_fact;
+
+      env_fact = strtoul (envstr_timeoutfactor, &envstr_conv, 0);
+      if (*envstr_conv == '\0' && envstr_conv != envstr_timeoutfactor)
+       timeoutfactor = MAX (env_fact, 1);
+    }
+
   /* Set TMPDIR to specified test directory.  */
   if (test_dir != NULL)
     {
@@ -221,6 +260,7 @@ main (int argc, char *argv[])
   atexit (delete_temp_files);
 
   /* Correct for the possible parameters.  */
+  argv[optind - 1] = argv[0];
   argv += optind - 1;
   argc -= optind - 1;
 
@@ -250,6 +290,23 @@ main (int argc, char *argv[])
       setrlimit (RLIMIT_CORE, &core_limit);
 #endif
 
+#ifdef RLIMIT_DATA
+      /* Try to avoid eating all memory if a test leaks.  */
+      struct rlimit data_limit;
+      if (getrlimit (RLIMIT_DATA, &data_limit) == 0)
+       {
+         if (TEST_DATA_LIMIT == RLIM_INFINITY)
+           data_limit.rlim_cur = data_limit.rlim_max;
+         else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT)
+           data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT,
+                                      data_limit.rlim_max);
+         if (setrlimit (RLIMIT_DATA, &data_limit) < 0)
+           perror ("setrlimit: RLIMIT_DATA");
+       }
+      else
+       perror ("getrlimit: RLIMIT_DATA");
+#endif
+
       /* We put the test process in its own pgrp so that if it bogusly
         generates any job control signals, they won't hit the whole build.  */
       setpgid (0, 0);
@@ -268,11 +325,11 @@ main (int argc, char *argv[])
   /* Default timeout is two seconds.  */
 # define TIMEOUT 2
 #endif
-  alarm (TIMEOUT);
   signal (SIGALRM, timeout_handler);
+  alarm (TIMEOUT * timeoutfactor);
 
   /* Wait for the regular termination.  */
-  termpid = waitpid (pid, &status, 0);
+  termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
   if (termpid == -1)
     {
       printf ("Waiting for test program failed: %m\n");
@@ -310,5 +367,16 @@ main (int argc, char *argv[])
     }
 
   /* Simply exit with the return value of the test.  */
+#ifndef EXPECTED_STATUS
   return WEXITSTATUS (status);
+#else
+  if (WEXITSTATUS (status) != EXPECTED_STATUS)
+    {
+      fprintf (stderr, "Expected status %d, got %d\n",
+              EXPECTED_STATUS, WEXITSTATUS (status));
+      exit (1);
+    }
+
+  return 0;
+#endif
 }