1 /* install - copy files and set attributes
2 Copyright (C) 89, 90, 91, 95, 1996 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 /* Copy files and set their permission modes and, if possible,
19 their owner and group. Used similarly to `cp'; typically
20 used in Makefiles to copy programs into their destination
21 directories. It can also be used to create the destination
22 directories and any leading directories, and to set the final
23 directory's modes. It refuses to copy files onto themselves.
27 Set the group ownership of the installed file or directory
28 to the group ID of GROUP (default is process's current
29 group). GROUP may also be a numeric group ID.
32 Set the permission mode for the installed file or directory
33 to MODE, which is an octal number (default is 0755).
36 If run as root, set the ownership of the installed file to
37 the user ID of OWNER (default is root). OWNER may also be
40 -c No effect. For compatibility with old Unix versions of install.
43 Strip the symbol tables from installed files.
46 Create a directory and its leading directories, if they
47 do not already exist. Set the owner, group and mode
48 as given on the command line. Any leading directories
49 that are created are also given those attributes.
50 This is different from the SunOS 4.0 install, which gives
51 directories that it creates the default attributes.
53 David MacKenzie <djm@gnu.ai.mit.edu> */
62 #include <sys/types.h>
67 #include "backupfile.h"
68 #include "modechange.h"
74 # include <sys/wait.h>
82 # define BITSPERBYTE 8
85 struct passwd *getpwnam ();
86 struct group *getgrnam ();
88 #ifndef _POSIX_VERSION
95 # define endgrent() ((void) 0)
99 # define endpwent() ((void) 0)
102 /* True if C is an ASCII octal digit. */
103 #define isodigit(c) ((c) >= '0' && c <= '7')
105 /* Number of bytes of a file to copy at a time. */
106 #define READ_SIZE (32 * 1024)
109 # define UID_T_MAX ((uid_t)(~((unsigned long)1 << ((sizeof (uid_t) \
110 * BITSPERBYTE - 1)))))
114 # define GID_T_MAX ((gid_t)(~((unsigned long)1 << ((sizeof (gid_t) \
115 * BITSPERBYTE - 1)))))
124 enum backup_type get_version ();
126 static int change_attributes __P ((char *path, int no_need_to_chown));
127 static int copy_file __P ((char *from, char *to, int *to_created));
128 static int install_file_in_dir __P ((char *from, char *to_dir));
129 static int install_file_in_file __P ((char *from, char *to));
130 static void get_ids __P ((void));
131 static void strip __P ((char *path));
132 static void usage __P ((int status));
134 /* The name this program was run with, for error messages. */
137 /* The user name that will own the files, or NULL to make the owner
138 the current user ID. */
139 static char *owner_name;
141 /* The user ID corresponding to `owner_name'. */
142 static uid_t owner_id;
144 /* The group name that will own the files, or NULL to make the group
145 the current group ID. */
146 static char *group_name;
148 /* The group ID corresponding to `group_name'. */
149 static gid_t group_id;
151 /* The permissions to which the files will be set. The umask has
155 /* If nonzero, strip executable files after copying them. */
156 static int strip_files;
158 /* If nonzero, install a directory instead of a regular file. */
161 /* If nonzero, display usage information and exit. */
162 static int show_help;
164 /* If nonzero, print the version on standard output and exit. */
165 static int show_version;
167 static struct option const long_options[] =
169 {"strip", no_argument, NULL, 's'},
170 {"directory", no_argument, NULL, 'd'},
171 {"group", required_argument, NULL, 'g'},
172 {"mode", required_argument, NULL, 'm'},
173 {"owner", required_argument, NULL, 'o'},
174 {"backup", no_argument, NULL, 'b'},
175 {"version-control", required_argument, NULL, 'V'},
176 {"help", no_argument, &show_help, 1},
177 {"version", no_argument, &show_version, 1},
182 main (int argc, char **argv)
186 char *symbolic_mode = NULL;
187 int make_backups = 0;
190 program_name = argv[0];
191 setlocale (LC_ALL, "");
192 bindtextdomain (PACKAGE, LOCALEDIR);
193 textdomain (PACKAGE);
202 version = getenv ("SIMPLE_BACKUP_SUFFIX");
204 simple_backup_suffix = version;
205 version = getenv ("VERSION_CONTROL");
207 while ((optc = getopt_long (argc, argv, "bcsdg:m:o:V:S:", long_options,
229 symbolic_mode = optarg;
235 simple_backup_suffix = optarg;
247 printf ("install (%s) %s\n", GNU_PACKAGE, VERSION);
254 /* Check for invalid combinations of arguments. */
255 if (dir_arg && strip_files)
257 _("the strip option may not be used when installing a directory"));
260 backup_type = get_version (version);
262 if (optind == argc || (optind == argc - 1 && !dir_arg))
264 error (0, 0, _("too few arguments"));
270 struct mode_change *change = mode_compile (symbolic_mode, 0);
271 if (change == MODE_INVALID)
272 error (1, 0, _("invalid mode `%s'"), symbolic_mode);
273 else if (change == MODE_MEMORY_EXHAUSTED)
274 error (1, 0, _("virtual memory exhausted"));
275 mode = mode_adjust (0, change);
282 for (; optind < argc; ++optind)
285 make_path (argv[optind], mode, mode, owner_id, group_id, 0, NULL);
290 if (optind == argc - 2)
292 if (!isdir (argv[argc - 1]))
293 errors = install_file_in_file (argv[argc - 2], argv[argc - 1]);
295 errors = install_file_in_dir (argv[argc - 2], argv[argc - 1]);
299 if (!isdir (argv[argc - 1]))
301 for (; optind < argc - 1; ++optind)
303 errors |= install_file_in_dir (argv[optind], argv[argc - 1]);
311 /* Copy file FROM onto file TO and give TO the appropriate
313 Return 0 if successful, 1 if an error occurs. */
316 install_file_in_file (char *from, char *to)
319 int no_need_to_chown;
321 if (copy_file (from, to, &to_created))
325 no_need_to_chown = (to_created
326 && owner_name == NULL
327 && group_name == NULL);
328 return change_attributes (to, no_need_to_chown);
331 /* Copy file FROM into directory TO_DIR, keeping its same name,
332 and give the copy the appropriate attributes.
333 Return 0 if successful, 1 if not. */
336 install_file_in_dir (char *from, char *to_dir)
342 from_base = basename (from);
343 to = xmalloc ((unsigned) (strlen (to_dir) + strlen (from_base) + 2));
344 stpcpy (stpcpy (stpcpy (to, to_dir), "/"), from_base);
345 ret = install_file_in_file (from, to);
350 /* A chunk of a file being copied. */
351 static char buffer[READ_SIZE];
353 /* Copy file FROM onto file TO, creating TO if necessary.
354 Return 0 if the copy is successful, 1 if not. If the copy is
355 successful, set *TO_CREATED to nonzero if TO was created (if it did
356 not exist or did, but was unlinked) and to zero otherwise. If the
357 copy fails, don't modify *TO_CREATED. */
360 copy_file (char *from, char *to, int *to_created)
365 struct stat from_stats, to_stats;
366 int target_created = 1;
368 if (stat (from, &from_stats))
370 error (0, errno, "%s", from);
374 /* Allow installing from non-regular files like /dev/null.
375 Charles Karney reported that some Sun version of install allows that
376 and that sendmail's installation process relies on the behavior. */
377 if (S_ISDIR (from_stats.st_mode))
379 error (0, 0, _("`%s' is a directory"), from);
382 if (stat (to, &to_stats) == 0)
384 if (!S_ISREG (to_stats.st_mode))
386 error (0, 0, _("`%s' is not a regular file"), to);
389 if (from_stats.st_dev == to_stats.st_dev
390 && from_stats.st_ino == to_stats.st_ino)
392 error (0, 0, _("`%s' and `%s' are the same file"), from, to);
396 /* The destination file exists. Try to back it up if required. */
397 if (backup_type != none)
399 char *tmp_backup = find_backup_file_name (to);
402 if (tmp_backup == NULL)
403 error (1, 0, "virtual memory exhausted");
404 dst_backup = (char *) alloca (strlen (tmp_backup) + 1);
405 strcpy (dst_backup, tmp_backup);
407 if (rename (to, dst_backup))
411 error (0, errno, "cannot backup `%s'", to);
417 /* If unlink fails, try to proceed anyway. */
422 fromfd = open (from, O_RDONLY, 0);
425 error (0, errno, "%s", from);
429 /* Make sure to open the file in a mode that allows writing. */
430 tofd = open (to, O_WRONLY | O_CREAT | O_TRUNC, 0600);
433 error (0, errno, "%s", to);
438 while ((bytes = safe_read (fromfd, buffer, READ_SIZE)) > 0)
439 if (full_write (tofd, buffer, bytes) < 0)
441 error (0, errno, "%s", to);
447 error (0, errno, "%s", from);
451 if (close (fromfd) < 0)
453 error (0, errno, "%s", from);
456 if (close (tofd) < 0)
458 error (0, errno, "%s", to);
462 *to_created = target_created;
471 /* Set the attributes of file or directory PATH.
472 If NO_NEED_TO_CHOWN is nonzero, don't call chown.
473 Return 0 if successful, 1 if not. */
476 change_attributes (char *path, int no_need_to_chown)
480 /* chown must precede chmod because on some systems,
481 chown clears the set[ug]id bits for non-superusers,
482 resulting in incorrect permissions.
483 On System V, users can give away files with chown and then not
484 be able to chmod them. So don't give files away.
486 We don't pass -1 to chown to mean "don't change the value"
487 because SVR3 and earlier non-BSD systems don't support that.
489 We don't normally ignore errors from chown because the idea of
490 the install command is that the file is supposed to end up with
491 precisely the attributes that the user specified (or defaulted).
492 If the file doesn't end up with the group they asked for, they'll
493 want to know. But AFS returns EPERM when you try to change a
494 file's group; thus the kludge. */
496 if (!no_need_to_chown && chown (path, owner_id, group_id)
502 if (chmod (path, mode))
506 error (0, err, "%s", path);
512 /* Strip the symbol table from the file PATH.
513 We could dig the magic number out of the file first to
514 determine whether to strip it, but the header files and
515 magic numbers vary so much from system to system that making
516 it portable would be very difficult. Not worth the effort. */
527 error (1, errno, _("fork system call failed"));
530 execlp ("strip", "strip", path, (char *) NULL);
531 error (1, errno, _("cannot run strip"));
533 default: /* Parent. */
534 /* Parent process. */
535 while (pid != wait (&status)) /* Wait for kid to finish. */
541 /* Initialize the user and group ownership of the files to install. */
551 pw = getpwnam (owner_name);
555 if (xstrtol (owner_name, NULL, 0, &tmp_long, NULL) != LONGINT_OK
556 || tmp_long < 0 || tmp_long > UID_T_MAX)
557 error (1, 0, _("invalid user `%s'"), owner_name);
558 owner_id = (uid_t) tmp_long;
561 owner_id = pw->pw_uid;
565 owner_id = getuid ();
569 gr = getgrnam (group_name);
573 if (xstrtol (group_name, NULL, 0, &tmp_long, NULL) != LONGINT_OK
574 || tmp_long < 0 || tmp_long > (long) GID_T_MAX)
575 error (1, 0, _("invalid group `%s'"), group_name);
576 group_id = (gid_t) tmp_long;
579 group_id = gr->gr_gid;
583 group_id = getgid ();
590 fprintf (stderr, _("Try `%s --help' for more information.\n"),
595 Usage: %s [OPTION]... SOURCE DEST (1st format)\n\
596 or: %s [OPTION]... SOURCE... DIRECTORY (2nd format)\n\
597 or: %s -d [OPTION]... DIRECTORY... (3rd format)\n\
599 program_name, program_name, program_name);
601 In first two formats, copy SOURCE to DEST or multiple SOURCE(s) to\n\
602 DIRECTORY, while setting permission modes and owner/group. In third\n\
603 format, make all components of the given DIRECTORY(ies).\n\
605 -b, --backup make backup before removal\n\
607 -d, --directory create [leading] directories, mandatory for 3rd format\n\
608 -g, --group=GROUP set group ownership, instead of process' current group\n\
609 -m, --mode=MODE set permission mode (as in chmod), instead of rw-r--r--\n\
610 -o, --owner=OWNER set ownership (super-user only)\n\
611 -s, --strip strip symbol tables, only for 1st and 2nd formats\n\
612 -S, --suffix=SUFFIX override the usual backup suffix\n\
613 -V, --version-control=WORD override the usual version control\n\
614 --help display this help and exit\n\
615 --version output version information and exit\n\
619 The backup suffix is ~, unless set with SIMPLE_BACKUP_SUFFIX. The\n\
620 version control may be set with VERSION_CONTROL, values are:\n\
622 t, numbered make numbered backups\n\
623 nil, existing numbered if numbered backups exist, simple otherwise\n\
624 never, simple always make simple backups\n\
626 puts (_("\nReport bugs to fileutils-bugs@gnu.ai.mit.edu"));