1 /* mv -- move or rename files
2 Copyright (C) 86, 89, 90, 91, 1995-2004 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Written by Mike Parker, David MacKenzie, and Jim Meyering */
23 #include <sys/types.h>
28 #include "backupfile.h"
33 #include "path-concat.h"
37 /* The official name of this program (e.g., no `g' prefix). */
38 #define PROGRAM_NAME "mv"
40 #define AUTHORS "Mike Parker", "David MacKenzie", "Jim Meyering"
42 /* Initial number of entries in each hash table entry's table of inodes. */
43 #define INITIAL_HASH_MODULE 100
45 /* Initial number of entries in the inode hash table. */
46 #define INITIAL_ENTRY_TAB_SIZE 70
48 /* For long options that have no equivalent short option, use a
49 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
52 TARGET_DIRECTORY_OPTION = CHAR_MAX + 1,
53 STRIP_TRAILING_SLASHES_OPTION,
60 /* The name this program was run with. */
63 /* Remove any trailing slashes from each SOURCE argument. */
64 static int remove_trailing_slashes;
66 /* Valid arguments to the `--reply' option. */
67 static char const* const reply_args[] =
69 "yes", "no", "query", 0
72 /* The values that correspond to the above strings. */
73 static int const reply_vals[] =
75 I_ALWAYS_YES, I_ALWAYS_NO, I_ASK_USER
78 static struct option const long_options[] =
80 {"backup", optional_argument, NULL, 'b'},
81 {"force", no_argument, NULL, 'f'},
82 {"interactive", no_argument, NULL, 'i'},
83 {"reply", required_argument, NULL, REPLY_OPTION},
84 {"strip-trailing-slashes", no_argument, NULL, STRIP_TRAILING_SLASHES_OPTION},
85 {"suffix", required_argument, NULL, 'S'},
86 {"target-directory", required_argument, NULL, TARGET_DIRECTORY_OPTION},
87 {"update", no_argument, NULL, 'u'},
88 {"verbose", no_argument, NULL, 'v'},
89 {"version-control", required_argument, NULL, 'V'},
90 {GETOPT_HELP_OPTION_DECL},
91 {GETOPT_VERSION_OPTION_DECL},
96 rm_option_init (struct rm_options *x)
99 x->ignore_missing_files = 0;
100 x->root_dev_ino = NULL;
103 /* Should we prompt for removal, too? No. Prompting for the `move'
104 part is enough. It implies removal. */
110 /* Since this program may well have to process additional command
111 line arguments after any call to `rm', that function must preserve
112 the initial working directory, in case one of those is a
113 `.'-relative name. */
114 x->require_restore_cwd = true;
118 cp_option_init (struct cp_options *x)
120 x->copy_as_regular = 0; /* FIXME: maybe make this an option */
121 x->dereference = DEREF_NEVER;
122 x->unlink_dest_before_opening = 0;
123 x->unlink_dest_after_failed_open = 0;
125 x->interactive = I_UNSPECIFIED;
127 x->myeuid = geteuid ();
128 x->one_file_system = 0;
129 x->preserve_ownership = 1;
130 x->preserve_links = 1;
131 x->preserve_mode = 1;
132 x->preserve_timestamps = 1;
133 x->require_preserve = 0; /* FIXME: maybe make this an option */
135 x->sparse_mode = SPARSE_AUTO; /* FIXME: maybe make this an option */
136 x->symbolic_link = 0;
139 x->stdin_tty = isatty (STDIN_FILENO);
141 /* Find out the current file creation mask, to knock the right bits
142 when using chmod. The creation mask is set to be liberal, so
143 that created directories can be written, even if it would not
144 have been allowed with the mask this process was started with. */
145 x->umask_kill = ~ umask (0);
153 /* If PATH is an existing directory, return nonzero, else 0. */
156 is_real_dir (const char *path)
160 return lstat (path, &stats) == 0 && S_ISDIR (stats.st_mode);
163 /* Move SOURCE onto DEST. Handles cross-filesystem moves.
164 If SOURCE is a directory, DEST must not exist.
165 Return 0 if successful, non-zero if an error occurred. */
168 do_move (const char *source, const char *dest, const struct cp_options *x)
170 static int first = 1;
172 int rename_succeeded;
179 /* Allocate space for remembering copied and created files. */
183 fail = copy (source, dest, 0, x, ©_into_self, &rename_succeeded);
187 char const *dir_to_remove;
190 /* In general, when copy returns with copy_into_self set, SOURCE is
191 the same as, or a parent of DEST. In this case we know it's a
192 parent. It doesn't make sense to move a directory into itself, and
193 besides in some situations doing so would give highly nonintuitive
194 results. Run this `mkdir b; touch a c; mv * b' in an empty
195 directory. Here's the result of running echo `find b -print`:
196 b b/a b/b b/b/a b/c. Notice that only file `a' was copied
197 into b/b. Handle this by giving a diagnostic, removing the
198 copied-into-self directory, DEST (`b/b' in the example),
201 dir_to_remove = NULL;
204 else if (rename_succeeded)
206 /* No need to remove anything. SOURCE was successfully
207 renamed to DEST. Or the user declined to rename a file. */
208 dir_to_remove = NULL;
212 /* This may mean SOURCE and DEST referred to different devices.
213 It may also conceivably mean that even though they referred
214 to the same device, rename wasn't implemented for that device.
216 E.g., (from Joel N. Weber),
217 [...] there might someday be cases where you can't rename
218 but you can copy where the device name is the same, especially
219 on Hurd. Consider an ftpfs with a primitive ftp server that
220 supports uploading, downloading and deleting, but not renaming.
222 Also, note that comparing device numbers is not a reliable
223 check for `can-rename'. Some systems can be set up so that
224 files from many different physical devices all have the same
225 st_dev field. This is a feature of some NFS mounting
228 We reach this point if SOURCE has been successfully copied
229 to DEST. Now we have to remove SOURCE.
231 This function used to resort to copying only when rename
232 failed and set errno to EXDEV. */
234 dir_to_remove = source;
237 if (dir_to_remove != NULL)
239 struct rm_options rm_options;
240 enum RM_status status;
242 rm_option_init (&rm_options);
243 rm_options.verbose = x->verbose;
245 status = rm (1, &dir_to_remove, &rm_options);
246 assert (VALID_STATUS (status));
247 if (status == RM_ERROR)
255 /* Move file SOURCE onto DEST. Handles the case when DEST is a directory.
256 DEST_IS_DIR must be nonzero when DEST is a directory or a symlink to a
257 directory and zero otherwise.
258 Return 0 if successful, non-zero if an error occurred. */
261 movefile (char *source, char *dest, int dest_is_dir,
262 const struct cp_options *x)
264 int dest_had_trailing_slash = strip_trailing_slashes (dest);
267 /* This code was introduced to handle the ambiguity in the semantics
268 of mv that is induced by the varying semantics of the rename function.
269 Some systems (e.g., Linux) have a rename function that honors a
270 trailing slash, while others (like Solaris 5,6,7) have a rename
271 function that ignores a trailing slash. I believe the Linux
272 rename semantics are POSIX and susv2 compliant. */
274 if (remove_trailing_slashes)
275 strip_trailing_slashes (source);
277 /* In addition to when DEST is a directory, if DEST has a trailing
278 slash and neither SOURCE nor DEST is a directory, presume the target
279 is DEST/`basename source`. This converts `mv x y/' to `mv x y/x'.
280 This change means that the command `mv any file/' will now fail
281 rather than performing the move. The case when SOURCE is a
282 directory and DEST is not is properly diagnosed by do_move. */
284 if (dest_is_dir || (dest_had_trailing_slash && !is_real_dir (source)))
286 /* DEST is a directory; build full target filename. */
287 char const *src_basename = base_name (source);
288 char *new_dest = path_concat (dest, src_basename, NULL);
289 if (new_dest == NULL)
291 strip_trailing_slashes (new_dest);
292 fail = do_move (source, new_dest, x);
297 fail = do_move (source, dest, x);
306 if (status != EXIT_SUCCESS)
307 fprintf (stderr, _("Try `%s --help' for more information.\n"),
312 Usage: %s [OPTION]... SOURCE DEST\n\
313 or: %s [OPTION]... SOURCE... DIRECTORY\n\
314 or: %s [OPTION]... --target-directory=DIRECTORY SOURCE...\n\
316 program_name, program_name, program_name);
318 Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n\
322 Mandatory arguments to long options are mandatory for short options too.\n\
325 --backup[=CONTROL] make a backup of each existing destination file\n\
326 -b like --backup but does not accept an argument\n\
327 -f, --force do not prompt before overwriting\n\
328 (equivalent to --reply=yes)\n\
329 -i, --interactive prompt before overwrite\n\
330 (equivalent to --reply=query)\n\
333 --reply={yes,no,query} specify how to handle the prompt about an\n\
334 existing destination file\n\
335 --strip-trailing-slashes remove any trailing slashes from each SOURCE\n\
337 -S, --suffix=SUFFIX override the usual backup suffix\n\
340 --target-directory=DIRECTORY move all SOURCE arguments into DIRECTORY\n\
341 -u, --update move only when the SOURCE file is newer\n\
342 than the destination file or when the\n\
343 destination file is missing\n\
344 -v, --verbose explain what is being done\n\
346 fputs (HELP_OPTION_DESCRIPTION, stdout);
347 fputs (VERSION_OPTION_DESCRIPTION, stdout);
350 The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
351 The version control method may be selected via the --backup option or through\n\
352 the VERSION_CONTROL environment variable. Here are the values:\n\
356 none, off never make backups (even if --backup is given)\n\
357 numbered, t make numbered backups\n\
358 existing, nil numbered if numbered backups exist, simple otherwise\n\
359 simple, never always make simple backups\n\
361 printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
367 main (int argc, char **argv)
371 int make_backups = 0;
373 char *backup_suffix_string;
374 char *version_control_string = NULL;
376 char *target_directory = NULL;
377 int target_directory_specified;
378 unsigned int n_files;
381 initialize_main (&argc, &argv);
382 program_name = argv[0];
383 setlocale (LC_ALL, "");
384 bindtextdomain (PACKAGE, LOCALEDIR);
385 textdomain (PACKAGE);
387 atexit (close_stdout);
391 /* FIXME: consider not calling getenv for SIMPLE_BACKUP_SUFFIX unless
392 we'll actually use backup_suffix_string. */
393 backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX");
397 while ((c = getopt_long (argc, argv, "bfiuvS:V:", long_options, NULL)) != -1)
404 case 'V': /* FIXME: this is deprecated. Remove it in 2001. */
406 _("warning: --version-control (-V) is obsolete; support for\
407 it\nwill be removed in some future release. Use --backup=%s instead."
414 version_control_string = optarg;
417 x.interactive = I_ALWAYS_YES;
420 x.interactive = I_ASK_USER;
423 x.interactive = XARGMATCH ("--reply", optarg,
424 reply_args, reply_vals);
426 case STRIP_TRAILING_SLASHES_OPTION:
427 remove_trailing_slashes = 1;
429 case TARGET_DIRECTORY_OPTION:
430 target_directory = optarg;
440 backup_suffix_string = optarg;
442 case_GETOPT_HELP_CHAR;
443 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
445 usage (EXIT_FAILURE);
449 n_files = (optind < argc ? argc - optind : 0);
450 file = argv + optind;
452 target_directory_specified = (target_directory != NULL);
453 if (target_directory == NULL && n_files != 0)
454 target_directory = file[n_files - 1];
456 dest_is_dir = (n_files > 0 && isdir (target_directory));
458 if (n_files == 0 || (n_files == 1 && !target_directory_specified))
461 error (0, 0, _("missing file operand"));
463 error (0, 0, _("missing file operand after %s"),
464 quote (argv[argc - 1]));
465 usage (EXIT_FAILURE);
468 if (target_directory_specified)
472 error (0, 0, _("specified target, %s is not a directory"),
473 quote (target_directory));
474 usage (EXIT_FAILURE);
477 else if (n_files > 2 && !dest_is_dir)
480 _("when moving multiple files, last argument must be a directory"));
481 usage (EXIT_FAILURE);
484 if (backup_suffix_string)
485 simple_backup_suffix = xstrdup (backup_suffix_string);
487 x.backup_type = (make_backups
488 ? xget_version (_("backup type"),
489 version_control_string)
492 /* Move each arg but the last into the target_directory. */
494 unsigned int last_file_idx = (target_directory_specified
499 /* Initialize the hash table only if we'll need it.
500 The problem it is used to detect can arise only if there are
501 two or more files to move. */
505 for (i = 0; i <= last_file_idx; ++i)
506 errors |= movefile (file[i], target_directory, dest_is_dir, &x);
509 exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);