summaryrefslogtreecommitdiff
path: root/nptl/tst-umask1.c
blob: 614f531320c0385cb4ad709350d00be43e8908eb (plain)
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/* Copyright (C) 2003-2019 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 <fcntl.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>


static struct
{
  int (*fp) (const char *, mode_t);
  const char *name;
  bool is_fd;
} fcts[] =
{
  { creat, "creat", true },
  { mkdir, "mkdir", false },
  { mkfifo, "mkfifo", false },
};
#define nfcts (sizeof (fcts) / sizeof (fcts[0]))


static int
work (const char *fname, int mask)
{
  int result = 0;
  size_t i;
  for (i = 0; i < nfcts; ++i)
    {
      remove (fname);
      int fd = fcts[i].fp (fname, 0777);
      if (fd == -1)
	{
	  printf ("cannot %s %s: %m\n", fcts[i].name, fname);
	  exit (1);
	}
      if (fcts[i].is_fd)
	close (fd);
      struct stat64 st;
      if (stat64 (fname, &st) == -1)
	{
	  printf ("cannot stat %s after %s: %m\n", fname, fcts[i].name);
	  exit (1);
	}

      if ((st.st_mode & mask) != 0)
	{
	  printf ("mask not successful after %s: %x still set\n",
		  fcts[i].name, (unsigned int) (st.st_mode & mask));
	  result = 1;
	}
    }

  return result;
}


static pthread_barrier_t bar;


static void *
tf (void *arg)
{
  pthread_barrier_wait (&bar);

  int result = work (arg, 022);

  pthread_barrier_wait (&bar);

  pthread_barrier_wait (&bar);

  return (work (arg, 0) | result) ? (void *) -1l : NULL;
}


static int
do_test (const char *fname)
{
  int result = 0;

  umask (0);
  result |= work (fname, 0);

  pthread_barrier_init (&bar, NULL, 2);

  pthread_t th;
  if (pthread_create (&th, NULL, tf, (void *) fname) != 0)
    {
      puts ("cannot create thread");
      exit (1);
    }

  umask (022);
  result |= work (fname, 022);

  pthread_barrier_wait (&bar);

  pthread_barrier_wait (&bar);

  umask (0);

  pthread_barrier_wait (&bar);

  void *res;
  if (pthread_join (th, &res) != 0)
    {
      puts ("join failed");
      exit (1);
    }

  remove (fname);

  return result || res != NULL;
}

#define TEST_FUNCTION do_test (argc < 2 ? "/tmp/tst-umask.tmp" : argv[1])
#include "../test-skeleton.c"