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/* Tests of renameat.
Copyright (C) 2009-2018 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake <ebb9@byu.net>, 2009. */
#include <config.h>
#include <stdio.h>
#include "signature.h"
SIGNATURE_CHECK (renameat, int, (int, char const *, int, char const *));
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "filenamecat.h"
#include "ignore-value.h"
#include "macros.h"
#define BASE "test-renameat.t"
#include "test-rename.h"
static int dfd1 = AT_FDCWD;
static int dfd2 = AT_FDCWD;
/* Wrapper to test renameat like rename. */
static int
do_rename (char const *name1, char const *name2)
{
return renameat (dfd1, name1, dfd2, name2);
}
int
main (void)
{
int i;
int dfd;
char *cwd;
int result;
/* Clean up any trash from prior testsuite runs. */
ignore_value (system ("rm -rf " BASE "*"));
/* Test behaviour for invalid file descriptors. */
{
errno = 0;
ASSERT (renameat (-1, "foo", AT_FDCWD, "bar") == -1);
ASSERT (errno == EBADF);
}
{
close (99);
errno = 0;
ASSERT (renameat (99, "foo", AT_FDCWD, "bar") == -1);
ASSERT (errno == EBADF);
}
ASSERT (close (creat (BASE "oo", 0600)) == 0);
{
errno = 0;
ASSERT (renameat (AT_FDCWD, BASE "oo", -1, "bar") == -1);
ASSERT (errno == EBADF);
}
{
errno = 0;
ASSERT (renameat (AT_FDCWD, BASE "oo", 99, "bar") == -1);
ASSERT (errno == EBADF);
}
ASSERT (unlink (BASE "oo") == 0);
/* Test basic rename functionality, using current directory. */
result = test_rename (do_rename, false);
dfd1 = open (".", O_RDONLY);
ASSERT (0 <= dfd1);
ASSERT (test_rename (do_rename, false) == result);
dfd2 = dfd1;
ASSERT (test_rename (do_rename, false) == result);
dfd1 = AT_FDCWD;
ASSERT (test_rename (do_rename, false) == result);
ASSERT (close (dfd2) == 0);
/* Create locations to manipulate. */
ASSERT (mkdir (BASE "sub1", 0700) == 0);
ASSERT (mkdir (BASE "sub2", 0700) == 0);
dfd = creat (BASE "00", 0600);
ASSERT (0 <= dfd);
ASSERT (close (dfd) == 0);
cwd = getcwd (NULL, 0);
ASSERT (cwd);
dfd = open (BASE "sub1", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (chdir (BASE "sub2") == 0);
/* There are 16 possible scenarios, based on whether an fd is
AT_FDCWD or real, and whether a file is absolute or relative.
To ensure that we test all of the code paths (rather than
triggering early normalization optimizations), we use a loop to
repeatedly rename a file in the parent directory, use an fd open
on subdirectory 1, all while executing in subdirectory 2; all
relative names are thus given with a leading "../". Finally, the
last scenario (two relative paths given, neither one AT_FDCWD)
has two paths, based on whether the two fds are equivalent, so we
do the other variant after the loop. */
for (i = 0; i < 16; i++)
{
int fd1 = (i & 8) ? dfd : AT_FDCWD;
char *file1 = file_name_concat ((i & 4) ? ".." : cwd, BASE "xx", NULL);
int fd2 = (i & 2) ? dfd : AT_FDCWD;
char *file2 = file_name_concat ((i & 1) ? ".." : cwd, BASE "xx", NULL);
ASSERT (sprintf (strchr (file1, '\0') - 2, "%02d", i) == 2);
ASSERT (sprintf (strchr (file2, '\0') - 2, "%02d", i + 1) == 2);
ASSERT (renameat (fd1, file1, fd2, file2) == 0);
free (file1);
free (file2);
}
dfd2 = open ("..", O_RDONLY);
ASSERT (0 <= dfd2);
ASSERT (renameat (dfd, "../" BASE "16", dfd2, BASE "17") == 0);
ASSERT (close (dfd2) == 0);
/* Now we change back to the parent directory, and set dfd to ".";
using dfd in remaining tests will expose any bugs if emulation
via /proc/self/fd doesn't check for empty names. */
ASSERT (chdir ("..") == 0);
ASSERT (close (dfd) == 0);
dfd = open (".", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub1", dfd, BASE "sub2") == -1);
ASSERT (errno == EEXIST || errno == ENOTEMPTY);
ASSERT (unlink (BASE "sub2/file") == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1/.") == -1);
ASSERT (errno == EINVAL || errno == EISDIR || errno == EBUSY
|| errno == ENOTEMPTY || errno == EEXIST
|| errno == ENOENT /* WSL */);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2/.", dfd, BASE "sub1") == -1);
ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
|| errno == ENOENT /* WSL */);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, BASE "sub1") == -1);
ASSERT (errno == EISDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "nosuch", dfd, BASE "18") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, "", dfd, BASE "17") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, "") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "17") == -1);
ASSERT (errno == ENOTDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "17/", dfd, BASE "18") == -1);
ASSERT (errno == ENOTDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, BASE "18/") == -1);
ASSERT (errno == ENOTDIR || errno == ENOENT);
/* Finally, make sure we can overwrite existing files. */
ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1") == 0);
ASSERT (renameat (dfd, BASE "sub1/file", dfd, BASE "17") == 0);
/* Cleanup. */
ASSERT (close (dfd) == 0);
errno = 0;
ASSERT (unlink (BASE "sub1/file") == -1);
ASSERT (errno == ENOENT);
ASSERT (unlink (BASE "17") == 0);
ASSERT (rmdir (BASE "sub1") == 0);
errno = 0;
ASSERT (rmdir (BASE "sub2") == -1);
ASSERT (errno == ENOENT);
free (cwd);
if (result)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return result;
}
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