File: tst-exec4.c

package info (click to toggle)
glibc 2.19-18+deb8u7
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 204,748 kB
  • sloc: ansic: 970,427; asm: 241,207; sh: 10,069; makefile: 8,476; cpp: 3,595; perl: 2,077; pascal: 1,839; awk: 1,704; yacc: 317; sed: 73
file content (115 lines) | stat: -rw-r--r-- 2,612 bytes parent folder | download | duplicates (26)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
/* Signal handler and mask set in thread which calls exec.
   Copyright (C) 2003-2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>


static void *
tf (void *arg)
{
  /* Ignore SIGUSR1 and block SIGUSR2.  */
  if (sigignore (SIGUSR1) != 0)
    {
      puts ("sigignore failed");
      exit (1);
    }

  sigset_t ss;
  sigemptyset (&ss);
  sigaddset (&ss, SIGUSR2);
  if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
    {
      puts ("1st run: sigmask failed");
      exit (1);
    }

  char **oldargv = (char **) arg;
  size_t n = 1;
  while (oldargv[n] != NULL)
    ++n;

  char **argv = (char **) alloca ((n + 1) * sizeof (char *));
  for (n = 0; oldargv[n + 1] != NULL; ++n)
    argv[n] = oldargv[n + 1];
  argv[n++] = (char *) "--direct";
  argv[n] = NULL;

  execv (argv[0], argv);

  puts ("execv failed");

  exit (1);
}


static int
do_test (int argc, char *argv[])
{
  if (argc == 1)
    {
      /* This is the second call.  Perform the test.  */
      struct sigaction sa;

      if (sigaction (SIGUSR1, NULL, &sa) != 0)
	{
	  puts ("2nd run: sigaction failed");
	  return 1;
	}
      if (sa.sa_handler != SIG_IGN)
	{
	  puts ("SIGUSR1 not ignored");
	  return 1;
	}

      sigset_t ss;
      if (pthread_sigmask (SIG_SETMASK, NULL, &ss) != 0)
	{
	  puts ("2nd run: sigmask failed");
	  return 1;
	}
      if (! sigismember (&ss, SIGUSR2))
	{
	  puts ("SIGUSR2 not blocked");
	  return 1;
	}

      return 0;
    }

  pthread_t th;
  if (pthread_create (&th, NULL, tf, argv) != 0)
    {
      puts ("create failed");
      exit (1);
    }

  /* This call should never return.  */
  pthread_join (th, NULL);

  puts ("join returned");

  return 1;
}

#define TEST_FUNCTION do_test (argc, argv)
#include "../test-skeleton.c"