1 /* mv -- move or rename files
2 Copyright (C) 86, 89, 90, 91, 1995-2001 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 */
27 #include <sys/types.h>
32 #include "backupfile.h"
37 #include "path-concat.h"
41 /* The official name of this program (e.g., no `g' prefix). */
42 #define PROGRAM_NAME "mv"
44 #define AUTHORS N_ ("Mike Parker, David MacKenzie, and Jim Meyering")
46 /* Initial number of entries in each hash table entry's table of inodes. */
47 #define INITIAL_HASH_MODULE 100
49 /* Initial number of entries in the inode hash table. */
50 #define INITIAL_ENTRY_TAB_SIZE 70
52 /* For long options that have no equivalent short option, use a
53 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
56 TARGET_DIRECTORY_OPTION = CHAR_MAX + 1,
57 STRIP_TRAILING_SLASHES_OPTION,
66 /* The name this program was run with. */
69 /* Remove any trailing slashes from each SOURCE argument. */
70 static int remove_trailing_slashes;
72 /* Valid arguments to the `--reply' option. */
73 static char const* const reply_args[] =
75 "yes", "no", "query", 0
78 /* The values that correspond to the above strings. */
79 static int const reply_vals[] =
81 I_ALWAYS_YES, I_ALWAYS_NO, I_ASK_USER
84 static struct option const long_options[] =
86 {"backup", optional_argument, NULL, 'b'},
87 {"force", no_argument, NULL, 'f'},
88 {"interactive", no_argument, NULL, 'i'},
89 {"reply", required_argument, NULL, REPLY_OPTION},
90 {"strip-trailing-slashes", no_argument, NULL, STRIP_TRAILING_SLASHES_OPTION},
91 {"suffix", required_argument, NULL, 'S'},
92 {"target-directory", required_argument, NULL, TARGET_DIRECTORY_OPTION},
93 {"update", no_argument, NULL, 'u'},
94 {"verbose", no_argument, NULL, 'v'},
95 {"version-control", required_argument, NULL, 'V'},
96 {GETOPT_HELP_OPTION_DECL},
97 {GETOPT_VERSION_OPTION_DECL},
102 rm_option_init (struct rm_options *x)
106 x->ignore_missing_files = 0;
110 /* Should we prompt for removal, too? No. Prompting for the `move'
111 part is enough. It implies removal. */
119 cp_option_init (struct cp_options *x)
121 x->copy_as_regular = 0; /* FIXME: maybe make this an option */
122 x->dereference = DEREF_NEVER;
123 x->unlink_dest_before_opening = 0;
124 x->unlink_dest_after_failed_open = 0;
126 x->interactive = I_UNSPECIFIED;
128 x->myeuid = geteuid ();
129 x->one_file_system = 0;
130 x->preserve_ownership = 1;
131 x->preserve_links = 1;
132 x->preserve_mode = 1;
133 x->preserve_timestamps = 1;
134 x->require_preserve = 0; /* FIXME: maybe make this an option */
136 x->sparse_mode = SPARSE_AUTO; /* FIXME: maybe make this an option */
137 x->symbolic_link = 0;
140 x->stdin_tty = isatty (STDIN_FILENO);
142 /* Find out the current file creation mask, to knock the right bits
143 when using chmod. The creation mask is set to be liberal, so
144 that created directories can be written, even if it would not
145 have been allowed with the mask this process was started with. */
146 x->umask_kill = ~ umask (0);
155 /* If PATH is an existing directory, return nonzero, else 0. */
158 is_real_dir (const char *path)
162 return lstat (path, &stats) == 0 && S_ISDIR (stats.st_mode);
165 /* Move SOURCE onto DEST. Handles cross-filesystem moves.
166 If SOURCE is a directory, DEST must not exist.
167 Return 0 if successful, non-zero if an error occurred. */
170 do_move (const char *source, const char *dest, const struct cp_options *x)
172 static int first = 1;
174 int rename_succeeded;
181 /* Allocate space for remembering copied and created files. */
185 fail = copy (source, dest, 0, x, ©_into_self, &rename_succeeded);
189 const char *dir_to_remove;
192 /* In general, when copy returns with copy_into_self set, SOURCE is
193 the same as, or a parent of DEST. In this case we know it's a
194 parent. It doesn't make sense to move a directory into itself, and
195 besides in some situations doing so would give highly nonintuitive
196 results. Run this `mkdir b; touch a c; mv * b' in an empty
197 directory. Here's the result of running echo `find b -print`:
198 b b/a b/b b/b/a b/c. Notice that only file `a' was copied
199 into b/b. Handle this by giving a diagnostic, removing the
200 copied-into-self directory, DEST (`b/b' in the example),
203 dir_to_remove = NULL;
206 else if (rename_succeeded)
208 /* No need to remove anything. SOURCE was successfully
210 dir_to_remove = NULL;
214 /* This may mean SOURCE and DEST referred to different devices.
215 It may also conceivably mean that even though they referred
216 to the same device, rename wasn't implemented for that device.
218 E.g., (from Joel N. Weber),
219 [...] there might someday be cases where you can't rename
220 but you can copy where the device name is the same, especially
221 on Hurd. Consider an ftpfs with a primitive ftp server that
222 supports uploading, downloading and deleting, but not renaming.
224 Also, note that comparing device numbers is not a reliable
225 check for `can-rename'. Some systems can be set up so that
226 files from many different physical devices all have the same
227 st_dev field. This is a feature of some NFS mounting
230 We reach this point if SOURCE has been successfully copied
231 to DEST. Now we have to remove SOURCE.
233 This function used to resort to copying only when rename
234 failed and set errno to EXDEV. */
236 dir_to_remove = source;
239 if (dir_to_remove != NULL)
241 struct rm_options rm_options;
243 enum RM_status status;
245 rm_option_init (&rm_options);
246 rm_options.verbose = x->verbose;
250 fspec_init_file (&fs, dir_to_remove);
252 /* Remove any trailing slashes. This is necessary if we
253 took the else branch of movefile. */
254 strip_trailing_slashes (fs.filename);
256 status = rm (&fs, 1, &rm_options);
257 assert (VALID_STATUS (status));
258 if (status == RM_ERROR)
264 error (0, errno, _("cannot remove %s"), quote (dir_to_remove));
271 /* Move file SOURCE onto DEST. Handles the case when DEST is a directory.
272 DEST_IS_DIR must be nonzero when DEST is a directory or a symlink to a
273 directory and zero otherwise.
274 Return 0 if successful, non-zero if an error occurred. */
277 movefile (char *source, char *dest, int dest_is_dir,
278 const struct cp_options *x)
280 int dest_had_trailing_slash = strip_trailing_slashes (dest);
283 /* This code was introduced to handle the ambiguity in the semantics
284 of mv that is induced by the varying semantics of the rename function.
285 Some systems (e.g., Linux) have a rename function that honors a
286 trailing slash, while others (like Solaris 5,6,7) have a rename
287 function that ignores a trailing slash. I believe the Linux
288 rename semantics are POSIX and susv2 compliant. */
290 if (remove_trailing_slashes)
291 strip_trailing_slashes (source);
293 /* In addition to when DEST is a directory, if DEST has a trailing
294 slash and neither SOURCE nor DEST is a directory, presume the target
295 is DEST/`basename source`. This converts `mv x y/' to `mv x y/x'.
296 This change means that the command `mv any file/' will now fail
297 rather than performing the move. The case when SOURCE is a
298 directory and DEST is not is properly diagnosed by do_move. */
300 if (dest_is_dir || (dest_had_trailing_slash && !is_real_dir (source)))
302 /* DEST is a directory; build full target filename. */
306 strip_trailing_slashes (source);
307 src_basename = base_name (source);
308 new_dest = path_concat (dest, src_basename, NULL);
309 if (new_dest == NULL)
311 fail = do_move (source, new_dest, x);
316 fail = do_move (source, dest, x);
326 fprintf (stderr, _("Try `%s --help' for more information.\n"),
331 Usage: %s [OPTION]... SOURCE DEST\n\
332 or: %s [OPTION]... SOURCE... DIRECTORY\n\
333 or: %s [OPTION]... --target-directory=DIRECTORY SOURCE...\n\
335 program_name, program_name, program_name);
337 Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n\
339 --backup[=CONTROL] make a backup of each existing destination file\n\
340 -b like --backup but does not accept an argument\n\
341 -f, --force do not prompt before overwriting\n\
342 equivalent to --reply=yes\n\
343 -i, --interactive prompt before overwrite\n\
344 equivalent to --reply=query\n\
347 --reply={yes,no,query} specify how to handle the prompt about an\n\
348 existing destination file\n\
349 --strip-trailing-slashes remove any trailing slashes from each SOURCE\n\
351 -S, --suffix=SUFFIX override the usual backup suffix\n\
354 --target-directory=DIRECTORY move all SOURCE arguments into DIRECTORY\n\
355 -u, --update move only when the SOURCE file is newer\n\
356 than the destination file or when the\n\
357 destination file is missing\n\
358 -v, --verbose explain what is being done\n\
361 --help display this help and exit\n\
362 --version output version information and exit\n\
366 The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
367 The version control method may be selected via the --backup option or through\n\
368 the VERSION_CONTROL environment variable. Here are the values:\n\
372 none, off never make backups (even if --backup is given)\n\
373 numbered, t make numbered backups\n\
374 existing, nil numbered if numbered backups exist, simple otherwise\n\
375 simple, never always make simple backups\n\
377 puts (_("\nReport bugs to <bug-fileutils@gnu.org>."));
383 main (int argc, char **argv)
387 int make_backups = 0;
389 char *backup_suffix_string;
390 char *version_control_string = NULL;
392 char *target_directory = NULL;
393 int target_directory_specified;
394 unsigned int n_files;
397 program_name = argv[0];
398 setlocale (LC_ALL, "");
399 bindtextdomain (PACKAGE, LOCALEDIR);
400 textdomain (PACKAGE);
402 atexit (close_stdout);
406 /* FIXME: consider not calling getenv for SIMPLE_BACKUP_SUFFIX unless
407 we'll actually use backup_suffix_string. */
408 backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX");
412 while ((c = getopt_long (argc, argv, "bfiuvS:V:", long_options, NULL)) != -1)
419 case 'V': /* FIXME: this is deprecated. Remove it in 2001. */
421 _("warning: --version-control (-V) is obsolete; support for\
422 it\nwill be removed in some future release. Use --backup=%s instead."
429 version_control_string = optarg;
432 x.interactive = I_ALWAYS_YES;
435 x.interactive = I_ASK_USER;
438 x.interactive = XARGMATCH ("--reply", optarg,
439 reply_args, reply_vals);
441 case STRIP_TRAILING_SLASHES_OPTION:
442 remove_trailing_slashes = 1;
444 case TARGET_DIRECTORY_OPTION:
445 target_directory = optarg;
455 backup_suffix_string = optarg;
457 case_GETOPT_HELP_CHAR;
458 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
464 n_files = argc - optind;
465 file = argv + optind;
467 target_directory_specified = (target_directory != NULL);
468 if (target_directory == NULL && n_files != 0)
469 target_directory = file[n_files - 1];
471 dest_is_dir = (n_files > 0 && isdir (target_directory));
473 if (n_files == 0 || (n_files == 1 && !target_directory_specified))
475 error (0, 0, _("missing file argument"));
479 if (target_directory_specified)
483 error (0, 0, _("specified target, %s is not a directory"),
484 quote (target_directory));
488 else if (n_files > 2 && !dest_is_dir)
491 _("when moving multiple files, last argument must be a directory"));
495 if (backup_suffix_string)
496 simple_backup_suffix = xstrdup (backup_suffix_string);
498 x.backup_type = (make_backups
499 ? xget_version (_("backup type"),
500 version_control_string)
503 /* Move each arg but the last into the target_directory. */
505 unsigned int last_file_idx = (target_directory_specified
510 /* Initialize the hash table only if we'll need it.
511 The problem it is used to detect can arise only if there are
512 two or more files to move. */
516 for (i = 0; i <= last_file_idx; ++i)
517 errors |= movefile (file[i], target_directory, dest_is_dir, &x);