mirror of
https://sourceware.org/git/glibc.git
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136 lines
2.7 KiB
C
136 lines
2.7 KiB
C
/* Copyright (C) 2003-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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static struct
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{
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int (*fp) (const char *, mode_t);
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const char *name;
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bool is_fd;
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} fcts[] =
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{
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{ creat, "creat", true },
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{ mkdir, "mkdir", false },
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{ mkfifo, "mkfifo", false },
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};
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#define nfcts (sizeof (fcts) / sizeof (fcts[0]))
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static int
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work (const char *fname, int mask)
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{
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int result = 0;
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size_t i;
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for (i = 0; i < nfcts; ++i)
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{
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remove (fname);
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int fd = fcts[i].fp (fname, 0777);
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if (fd == -1)
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{
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printf ("cannot %s %s: %m\n", fcts[i].name, fname);
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exit (1);
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}
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if (fcts[i].is_fd)
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close (fd);
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struct stat64 st;
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if (stat64 (fname, &st) == -1)
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{
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printf ("cannot stat %s after %s: %m\n", fname, fcts[i].name);
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exit (1);
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}
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if ((st.st_mode & mask) != 0)
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{
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printf ("mask not successful after %s: %x still set\n",
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fcts[i].name, (unsigned int) (st.st_mode & mask));
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result = 1;
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}
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}
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return result;
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}
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static pthread_barrier_t bar;
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static void *
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tf (void *arg)
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{
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pthread_barrier_wait (&bar);
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int result = work (arg, 022);
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pthread_barrier_wait (&bar);
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pthread_barrier_wait (&bar);
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return (work (arg, 0) | result) ? (void *) -1l : NULL;
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}
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static int
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do_test (const char *fname)
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{
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int result = 0;
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umask (0);
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result |= work (fname, 0);
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pthread_barrier_init (&bar, NULL, 2);
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pthread_t th;
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if (pthread_create (&th, NULL, tf, (void *) fname) != 0)
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{
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puts ("cannot create thread");
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exit (1);
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}
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umask (022);
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result |= work (fname, 022);
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pthread_barrier_wait (&bar);
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pthread_barrier_wait (&bar);
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umask (0);
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pthread_barrier_wait (&bar);
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void *res;
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if (pthread_join (th, &res) != 0)
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{
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puts ("join failed");
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exit (1);
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}
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remove (fname);
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return result || res != NULL;
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}
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#define TEST_FUNCTION do_test (argc < 2 ? "/tmp/tst-umask.tmp" : argv[1])
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#include "../test-skeleton.c"
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