1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
|
/* install - copy files and set attributes
Copyright (C) 1989, 1990, 1991 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 2, 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Copy files and set their permission modes and, if possible,
their owner and group. Used similarly to `cp'; typically
used in Makefiles to copy programs into their destination
directories. It can also be used to create the destination
directories and any leading directories, and to set the final
directory's modes. It refuses to copy files onto themselves.
Options:
-g, --group=GROUP
Set the group ownership of the installed file or directory
to the group ID of GROUP (default is process's current
group). GROUP may also be a numeric group ID.
-m, --mode=MODE
Set the permission mode for the installed file or directory
to MODE, which is an octal number (default is 0755).
-o, --owner=OWNER
If run as root, set the ownership of the installed file to
the user ID of OWNER (default is root). OWNER may also be
a numeric user ID.
-c No effect. For compatibility with old Unix versions of install.
-s, --strip
Strip the symbol tables from installed files.
-d, --directory
Create a directory and its leading directories, if they
do not already exist. Set the owner, group and mode
as given on the command line. Any leading directories
that are created are also given those attributes.
This is different from the SunOS 4.0 install, which gives
directories that it creates the default attributes.
David MacKenzie <djm@gnu.ai.mit.edu> */
#include <stdio.h>
#include <getopt.h>
#include <ctype.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include "system.h"
#include "version.h"
#include "modechange.h"
#if !defined (isascii) || defined (STDC_HEADERS)
#undef isascii
#define isascii(c) 1
#endif
#define ISDIGIT(c) (isascii (c) && isdigit (c))
#ifdef _POSIX_VERSION
#include <sys/wait.h>
#else
struct passwd *getpwnam ();
struct group *getgrnam ();
uid_t getuid ();
gid_t getgid ();
int wait ();
#endif
#ifdef _POSIX_SOURCE
#define endgrent()
#define endpwent()
#endif
/* True if C is an ASCII octal digit. */
#define isodigit(c) ((c) >= '0' && c <= '7')
/* Number of bytes of a file to copy at a time. */
#define READ_SIZE (32 * 1024)
char *basename ();
char *xmalloc ();
void error ();
int make_path ();
int isdir ();
static int change_attributes ();
static int copy_file ();
static int install_file_in_dir ();
static int install_file_in_file ();
static int isnumber ();
static void get_ids ();
static void strip ();
static void usage ();
/* The name this program was run with, for error messages. */
char *program_name;
/* The user name that will own the files, or NULL to make the owner
the current user ID. */
static char *owner_name;
/* The user ID corresponding to `owner_name'. */
static uid_t owner_id;
/* The group name that will own the files, or NULL to make the group
the current group ID. */
static char *group_name;
/* The group ID corresponding to `group_name'. */
static gid_t group_id;
/* The permissions to which the files will be set. The umask has
no effect. */
static int mode;
/* If nonzero, strip executable files after copying them. */
static int strip_files;
/* If nonzero, install a directory instead of a regular file. */
static int dir_arg;
/* If non-zero, display usage information and exit. */
static int flag_help;
/* If non-zero, print the version on standard error. */
static int flag_version;
static struct option const long_options[] =
{
{"strip", no_argument, NULL, 's'},
{"directory", no_argument, NULL, 'd'},
{"group", required_argument, NULL, 'g'},
{"mode", required_argument, NULL, 'm'},
{"owner", required_argument, NULL, 'o'},
{"help", no_argument, &flag_help, 1},
{"version", no_argument, &flag_version, 1},
{NULL, 0, NULL, 0}
};
void
main (argc, argv)
int argc;
char **argv;
{
int optc;
int errors = 0;
char *symbolic_mode = NULL;
program_name = argv[0];
owner_name = NULL;
group_name = NULL;
mode = 0755;
strip_files = 0;
dir_arg = 0;
umask (0);
while ((optc = getopt_long (argc, argv, "csdg:m:o:", long_options,
(int *) 0)) != EOF)
{
switch (optc)
{
case 0:
break;
case 'c':
break;
case 's':
strip_files = 1;
break;
case 'd':
dir_arg = 1;
break;
case 'g':
group_name = optarg;
break;
case 'm':
symbolic_mode = optarg;
break;
case 'o':
owner_name = optarg;
break;
default:
usage ();
}
}
if (flag_version)
fprintf (stderr, "%s\n", version_string);
if (flag_help)
usage ();
/* Check for invalid combinations of arguments. */
if ((dir_arg && strip_files)
|| (optind == argc)
|| (optind == argc - 1 && !dir_arg))
usage ();
if (symbolic_mode)
{
struct mode_change *change = mode_compile (symbolic_mode, 0);
if (change == MODE_INVALID)
error (1, 0, "invalid mode `%s'", symbolic_mode);
else if (change == MODE_MEMORY_EXHAUSTED)
error (1, 0, "virtual memory exhausted");
mode = mode_adjust (0, change);
}
get_ids ();
if (dir_arg)
{
for (; optind < argc; ++optind)
{
errors |=
make_path (argv[optind], mode, mode, owner_id, group_id, NULL);
}
}
else
{
if (optind == argc - 2)
{
if (!isdir (argv[argc - 1]))
errors = install_file_in_file (argv[argc - 2], argv[argc - 1]);
else
errors = install_file_in_dir (argv[argc - 2], argv[argc - 1]);
}
else
{
if (!isdir (argv[argc - 1]))
usage ();
for (; optind < argc - 1; ++optind)
{
errors |= install_file_in_dir (argv[optind], argv[argc - 1]);
}
}
}
exit (errors);
}
/* Copy file FROM onto file TO and give TO the appropriate
attributes.
Return 0 if successful, 1 if an error occurs. */
static int
install_file_in_file (from, to)
char *from;
char *to;
{
if (copy_file (from, to))
return 1;
if (strip_files)
strip (to);
return change_attributes (to);
}
/* Copy file FROM into directory TO_DIR, keeping its same name,
and give the copy the appropriate attributes.
Return 0 if successful, 1 if not. */
static int
install_file_in_dir (from, to_dir)
char *from;
char *to_dir;
{
char *from_base;
char *to;
int ret;
from_base = basename (from);
to = xmalloc ((unsigned) (strlen (to_dir) + strlen (from_base) + 2));
sprintf (to, "%s/%s", to_dir, from_base);
ret = install_file_in_file (from, to);
free (to);
return ret;
}
/* A chunk of a file being copied. */
static char buffer[READ_SIZE];
/* Copy file FROM onto file TO, creating TO if necessary.
Return 0 if the copy is successful, 1 if not. */
static int
copy_file (from, to)
char *from;
char *to;
{
int fromfd, tofd;
int bytes;
int ret = 0;
struct stat from_stats, to_stats;
if (stat (from, &from_stats))
{
error (0, errno, "%s", from);
return 1;
}
if (!S_ISREG (from_stats.st_mode))
{
error (0, 0, "`%s' is not a regular file", from);
return 1;
}
if (stat (to, &to_stats) == 0)
{
if (!S_ISREG (to_stats.st_mode))
{
error (0, 0, "`%s' is not a regular file", to);
return 1;
}
if (from_stats.st_dev == to_stats.st_dev
&& from_stats.st_ino == to_stats.st_ino)
{
error (0, 0, "`%s' and `%s' are the same file", from, to);
return 1;
}
/* If unlink fails, try to proceed anyway. */
unlink (to);
}
fromfd = open (from, O_RDONLY, 0);
if (fromfd == -1)
{
error (0, errno, "%s", from);
return 1;
}
/* Make sure to open the file in a mode that allows writing. */
tofd = open (to, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (tofd == -1)
{
error (0, errno, "%s", to);
close (fromfd);
return 1;
}
while ((bytes = read (fromfd, buffer, READ_SIZE)) > 0)
if (write (tofd, buffer, bytes) != bytes)
{
error (0, errno, "%s", to);
goto copy_error;
}
if (bytes == -1)
{
error (0, errno, "%s", from);
goto copy_error;
}
if (close (fromfd) < 0)
{
error (0, errno, "%s", from);
ret = 1;
}
if (close (tofd) < 0)
{
error (0, errno, "%s", to);
ret = 1;
}
return ret;
copy_error:
close (fromfd);
close (tofd);
return 1;
}
/* Set the attributes of file or directory PATH.
Return 0 if successful, 1 if not. */
static int
change_attributes (path)
char *path;
{
int err = 0;
/* chown must precede chmod because on some systems,
chown clears the set[ug]id bits for non-superusers,
resulting in incorrect permissions.
On System V, users can give away files with chown and then not
be able to chmod them. So don't give files away.
We don't pass -1 to chown to mean "don't change the value"
because SVR3 and earlier non-BSD systems don't support that.
We don't normally ignore errors from chown because the idea of
the install command is that the file is supposed to end up with
precisely the attributes that the user specified (or defaulted).
If the file doesn't end up with the group they asked for, they'll
want to know. But AFS returns EPERM when you try to change a
file's group; thus the kludge. */
if (chown (path, owner_id, group_id)
#ifdef AFS
&& errno != EPERM
#endif
)
err = errno;
if (chmod (path, mode))
err = errno;
if (err)
{
error (0, err, "%s", path);
return 1;
}
return 0;
}
/* Strip the symbol table from the file PATH.
We could dig the magic number out of the file first to
determine whether to strip it, but the header files and
magic numbers vary so much from system to system that making
it portable would be very difficult. Not worth the effort. */
static void
strip (path)
char *path;
{
int pid, status;
pid = fork ();
switch (pid)
{
case -1:
error (1, errno, "cannot fork");
break;
case 0: /* Child. */
execlp ("strip", "strip", path, (char *) NULL);
error (1, errno, "cannot run strip");
break;
default: /* Parent. */
/* Parent process. */
while (pid != wait (&status)) /* Wait for kid to finish. */
/* Do nothing. */ ;
break;
}
}
/* Initialize the user and group ownership of the files to install. */
static void
get_ids ()
{
struct passwd *pw;
struct group *gr;
if (owner_name)
{
pw = getpwnam (owner_name);
if (pw == NULL)
{
if (!isnumber (owner_name))
error (1, 0, "invalid user `%s'", owner_name);
owner_id = atoi (owner_name);
}
else
owner_id = pw->pw_uid;
endpwent ();
}
else
owner_id = getuid ();
if (group_name)
{
gr = getgrnam (group_name);
if (gr == NULL)
{
if (!isnumber (group_name))
error (1, 0, "invalid group `%s'", group_name);
group_id = atoi (group_name);
}
else
group_id = gr->gr_gid;
endgrent ();
}
else
group_id = getgid ();
}
/* Return nonzero if STR is an ASCII representation of a nonzero
decimal integer, zero if not. */
static int
isnumber (str)
char *str;
{
if (*str == 0)
return 0;
for (; *str; str++)
if (!ISDIGIT (*str))
return 0;
return 1;
}
static void
usage ()
{
fprintf (stderr, "\
Usage: %s [options] [-s] [--strip] source dest\n\
%s [options] [-s] [--strip] source... directory\n\
%s [options] {-d,--directory} directory...\n\
Options:\n\
[-c] [-g group] [-m mode] [-o owner] [--group=group]\n\
[--help] [--version] [--mode=mode] [--owner=owner]\n",
program_name, program_name, program_name);
exit (1);
}
|