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ea75860813
Use libsupport convenience functions and macros instead of the old test-skeleton. Also add a new xdup() convenience wrapper function. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
124 lines
3.7 KiB
C
124 lines
3.7 KiB
C
/* Test for faccessat function.
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Copyright (C) 2006-2024 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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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 <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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#include <support/test-driver.h>
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#include <support/xdirent.h>
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#include <support/xunistd.h>
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static int dir_fd;
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static void
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prepare (int argc, char **argv)
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{
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dir_fd = xopen (support_create_temp_directory ("tst-faccessat."),
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O_RDONLY | O_DIRECTORY, 0);
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}
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static int
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do_test (void)
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{
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/* fdopendir takes over the descriptor, make a copy. */
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int dupfd = xdup (dir_fd);
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xlseek (dupfd, 0, SEEK_SET);
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/* The directory should be empty save the . and .. files. */
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DIR *dir = xfdopendir (dupfd);
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struct dirent64 *d;
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while ((d = xreaddir64 (dir)) != NULL)
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if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
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FAIL_EXIT1 ("temp directory contains file \"%s\"\n", d->d_name);
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xclosedir (dir);
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/* Try to create a file. */
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int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
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if (fd == -1)
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{
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if (errno == ENOSYS)
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FAIL_UNSUPPORTED ("*at functions not supported");
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FAIL_EXIT1 ("file creation failed");
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}
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xwrite (fd, "hello", 5);
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puts ("file created");
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/* Before closing the file, try using this file descriptor to open
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another file. This must fail. */
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TEST_VERIFY_EXIT (faccessat (fd, "should-not-work", F_OK, AT_EACCESS) == -1);
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TEST_VERIFY_EXIT (errno == ENOTDIR);
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xclose (fd);
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TEST_VERIFY (faccessat (dir_fd, "some-file", F_OK, AT_EACCESS) == 0);
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TEST_VERIFY (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS) == 0);
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errno = 0;
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if (faccessat (dir_fd, "some-file", X_OK, AT_EACCESS) != 0)
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TEST_COMPARE (errno, EACCES);
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else
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FAIL ("faccessat unexpectedly succeeded\n");
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if (fchmodat (dir_fd, "some-file", 0400, 0) != 0)
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FAIL_EXIT1 ("fchownat failed: %m\n");
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TEST_VERIFY (faccessat (dir_fd, "some-file", R_OK, AT_EACCESS) == 0);
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/* Write would succeed only for EUID root, otherwise this test should
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fail. */
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errno = 0;
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TEST_VERIFY (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS) == 0
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? (geteuid () == 0) : (errno == EACCES));
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/* Create a file descriptor which is closed again right away. */
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int dir_fd2 = xdup (dir_fd);
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close (dir_fd2);
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/* With the file descriptor closed the next call must fail. */
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TEST_VERIFY_EXIT (faccessat (dir_fd2, "some-file", F_OK, AT_EACCESS)
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== -1);
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TEST_VERIFY_EXIT (errno == EBADF);
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/* Same with a non-existing file. */
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TEST_VERIFY_EXIT (faccessat (dir_fd2, "non-existing-file", F_OK, AT_EACCESS)
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== -1);
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TEST_VERIFY_EXIT (errno == EBADF);
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TEST_VERIFY (unlinkat (dir_fd, "some-file", 0) == 0);
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xclose (dir_fd);
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TEST_VERIFY_EXIT (faccessat (-1, "some-file", F_OK, AT_EACCESS) == -1);
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TEST_VERIFY_EXIT (errno == EBADF);
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return 0;
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}
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#define PREPARE prepare
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#include <support/test-driver.c>
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