| /* Tests of renameat. |
| Copyright (C) 2009-2020 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; |
| } |