nptl/tst-exec4.c

   1 /* Signal handler and mask set in thread which calls exec.
   2    Copyright (C) 2003 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <pthread.h>
  22 #include <signal.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26
  27
  28 static void *
  29 tf (void *arg)
  30 {
  31   /* Ignore SIGUSR1 and block SIGUSR2.  */
  32   if (sigignore (SIGUSR1) != 0)
  33     {
  34       puts ("sigignore failed");
  35       exit (1);
  36     }
  37
  38   sigset_t ss;
  39   sigemptyset (&ss);
  40   sigaddset (&ss, SIGUSR2);
  41   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
  42     {
  43       puts ("1st run: sigmask failed");
  44       exit (1);
  45     }
  46
  47   char **oldargv = (char **) arg;
  48   size_t n = 1;
  49   while (oldargv[n] != NULL)
  50     ++n;
  51
  52   char **argv = (char **) alloca ((n + 1) * sizeof (char *));
  53   for (n = 0; oldargv[n + 1] != NULL; ++n)
  54     argv[n] = oldargv[n + 1];
  55   argv[n++] = (char *) "--direct";
  56   argv[n] = NULL;
  57
  58   execv (argv[0], argv);
  59
  60   puts ("execv failed");
  61
  62   exit (1);
  63 }
  64
  65
  66 static int
  67 do_test (int argc, char *argv[])
  68 {
  69   if (argc == 1)
  70     {
  71       /* This is the second call.  Perform the test.  */
  72       struct sigaction sa;
  73
  74       if (sigaction (SIGUSR1, NULL, &sa) != 0)
  75         {
  76           puts ("2nd run: sigaction failed");
  77           return 1;
  78         }
  79       if (sa.sa_handler != SIG_IGN)
  80         {
  81           puts ("SIGUSR1 not ignored");
  82           return 1;
  83         }
  84
  85       sigset_t ss;
  86       if (pthread_sigmask (SIG_SETMASK, NULL, &ss) != 0)
  87         {
  88           puts ("2nd run: sigmask failed");
  89           return 1;
  90         }
  91       if (! sigismember (&ss, SIGUSR2))
  92         {
  93           puts ("SIGUSR2 not blocked");
  94           return 1;
  95         }
  96
  97       return 0;
  98     }
  99
 100   pthread_t th;
 101   if (pthread_create (&th, NULL, tf, argv) != 0)
 102     {
 103       puts ("create failed");
 104       exit (1);
 105     }
 106
 107   /* This call should never return.  */
 108   pthread_join (th, NULL);
 109
 110   puts ("join returned");
 111
 112   return 1;
 113 }
 114
 115 #define TEST_FUNCTION do_test (argc, argv)
 116 #include "../test-skeleton.c"