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/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://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"
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