Line data Source code
1 : /* Create, modify, and extract from archives.
2 : Copyright (C) 2005-2012, 2016, 2017 Red Hat, Inc.
3 : This file is part of elfutils.
4 : Written by Ulrich Drepper <drepper@redhat.com>, 2005.
5 :
6 : This file is free software; you can redistribute it and/or modify
7 : it under the terms of the GNU General Public License as published by
8 : the Free Software Foundation; either version 3 of the License, or
9 : (at your option) any later version.
10 :
11 : elfutils is distributed in the hope that it will be useful, but
12 : WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : GNU General Public License for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 :
19 : #ifdef HAVE_CONFIG_H
20 : # include <config.h>
21 : #endif
22 :
23 : #include <argp.h>
24 : #include <assert.h>
25 : #include <fcntl.h>
26 : #include <gelf.h>
27 : #include <libintl.h>
28 : #include <limits.h>
29 : #include <locale.h>
30 : #include <search.h>
31 : #include <stdbool.h>
32 : #include <stdlib.h>
33 : #include <stdio.h>
34 : #include <stdio_ext.h>
35 : #include <string.h>
36 : #include <time.h>
37 : #include <unistd.h>
38 : #include <sys/mman.h>
39 : #include <sys/stat.h>
40 : #include <sys/time.h>
41 :
42 : #include <system.h>
43 : #include <printversion.h>
44 :
45 : #include "arlib.h"
46 :
47 :
48 : /* Name and version of program. */
49 : ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
50 :
51 : /* Prototypes for local functions. */
52 : static int do_oper_extract (int oper, const char *arfname, char **argv,
53 : int argc, long int instance);
54 : static int do_oper_delete (const char *arfname, char **argv, int argc,
55 : long int instance);
56 : static int do_oper_insert (int oper, const char *arfname, char **argv,
57 : int argc, const char *member);
58 :
59 :
60 : /* Bug report address. */
61 : ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
62 :
63 :
64 : /* Definitions of arguments for argp functions. */
65 : static const struct argp_option options[] =
66 : {
67 : { NULL, 0, NULL, 0, N_("Commands:"), 1 },
68 : { NULL, 'd', NULL, 0, N_("Delete files from archive."), 0 },
69 : { NULL, 'm', NULL, 0, N_("Move files in archive."), 0 },
70 : { NULL, 'p', NULL, 0, N_("Print files in archive."), 0 },
71 : { NULL, 'q', NULL, 0, N_("Quick append files to archive."), 0 },
72 : { NULL, 'r', NULL, 0,
73 : N_("Replace existing or insert new file into archive."), 0 },
74 : { NULL, 't', NULL, 0, N_("Display content of archive."), 0 },
75 : { NULL, 'x', NULL, 0, N_("Extract files from archive."), 0 },
76 :
77 : { NULL, 0, NULL, 0, N_("Command Modifiers:"), 2 },
78 : { NULL, 'o', NULL, 0, N_("Preserve original dates."), 0 },
79 : { NULL, 'N', NULL, 0, N_("Use instance [COUNT] of name."), 0 },
80 : { NULL, 'C', NULL, 0,
81 : N_("Do not replace existing files with extracted files."), 0 },
82 : { NULL, 'T', NULL, 0, N_("Allow filename to be truncated if necessary."),
83 : 0 },
84 : { NULL, 'v', NULL, 0, N_("Provide verbose output."), 0 },
85 : { NULL, 's', NULL, 0, N_("Force regeneration of symbol table."), 0 },
86 : { NULL, 'a', NULL, 0, N_("Insert file after [MEMBER]."), 0 },
87 : { NULL, 'b', NULL, 0, N_("Insert file before [MEMBER]."), 0 },
88 : { NULL, 'i', NULL, 0, N_("Same as -b."), 0 },
89 : { NULL, 'c', NULL, 0, N_("Suppress message when library has to be created."),
90 : 0 },
91 : { NULL, 'P', NULL, 0, N_("Use full path for file matching."), 0 },
92 : { NULL, 'u', NULL, 0, N_("Update only older files in archive."), 0 },
93 :
94 : { NULL, 0, NULL, 0, NULL, 0 }
95 : };
96 :
97 : /* Short description of program. */
98 : static const char doc[] = N_("Create, modify, and extract from archives.");
99 :
100 : /* Strings for arguments in help texts. */
101 : static const char args_doc[] = N_("[MEMBER] [COUNT] ARCHIVE [FILE...]");
102 :
103 : /* Prototype for option handler. */
104 : static error_t parse_opt (int key, char *arg, struct argp_state *state);
105 :
106 : /* Data structure to communicate with argp functions. */
107 : static struct argp argp =
108 : {
109 : options, parse_opt, args_doc, doc, arlib_argp_children, NULL, NULL
110 : };
111 :
112 :
113 : /* What operation to perform. */
114 : static enum
115 : {
116 : oper_none,
117 : oper_delete,
118 : oper_move,
119 : oper_print,
120 : oper_qappend,
121 : oper_replace,
122 : oper_list,
123 : oper_extract
124 : } operation;
125 :
126 : /* Modifiers. */
127 : static bool verbose;
128 : static bool preserve_dates;
129 : static bool instance_specifed;
130 : static bool dont_replace_existing;
131 : static bool allow_truncate_fname;
132 : static bool force_symtab;
133 : static bool suppress_create_msg;
134 : static bool full_path;
135 : static bool update_newer;
136 : static enum { ipos_none, ipos_before, ipos_after } ipos;
137 :
138 :
139 : int
140 4 : main (int argc, char *argv[])
141 : {
142 : /* We use no threads here which can interfere with handling a stream. */
143 4 : (void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
144 4 : (void) __fsetlocking (stdout, FSETLOCKING_BYCALLER);
145 4 : (void) __fsetlocking (stderr, FSETLOCKING_BYCALLER);
146 :
147 : /* Set locale. */
148 4 : (void) setlocale (LC_ALL, "");
149 :
150 : /* Make sure the message catalog can be found. */
151 4 : (void) bindtextdomain (PACKAGE_TARNAME, LOCALEDIR);
152 :
153 : /* Initialize the message catalog. */
154 4 : (void) textdomain (PACKAGE_TARNAME);
155 :
156 : /* For historical reasons the options in the first parameter need
157 : not be preceded by a dash. Add it now if necessary. */
158 4 : if (argc > 1 && argv[1][0] != '-')
159 : {
160 0 : size_t len = strlen (argv[1]) + 1;
161 0 : char *newp = alloca (len + 1);
162 0 : newp[0] = '-';
163 0 : memcpy (&newp[1], argv[1], len);
164 0 : argv[1] = newp;
165 : }
166 :
167 : /* Parse and process arguments. */
168 : int remaining;
169 4 : (void) argp_parse (&argp, argc, argv, ARGP_IN_ORDER, &remaining, NULL);
170 :
171 : /* Tell the library which version we are expecting. */
172 4 : (void) elf_version (EV_CURRENT);
173 :
174 : /* Handle the [MEMBER] parameter. */
175 4 : const char *member = NULL;
176 4 : if (ipos != ipos_none)
177 : {
178 : /* Only valid for certain operations. */
179 0 : if (operation != oper_move && operation != oper_replace)
180 0 : error (1, 0, gettext ("\
181 : 'a', 'b', and 'i' are only allowed with the 'm' and 'r' options"));
182 :
183 0 : if (remaining == argc)
184 : {
185 0 : error (0, 0, gettext ("\
186 : MEMBER parameter required for 'a', 'b', and 'i' modifiers"));
187 0 : argp_help (&argp, stderr, ARGP_HELP_USAGE | ARGP_HELP_SEE,
188 : program_invocation_short_name);
189 0 : exit (EXIT_FAILURE);
190 : }
191 :
192 0 : member = argv[remaining++];
193 : }
194 :
195 : /* Handle the [COUNT] parameter. */
196 4 : long int instance = -1;
197 4 : if (instance_specifed)
198 : {
199 : /* Only valid for certain operations. */
200 0 : if (operation != oper_extract && operation != oper_delete)
201 0 : error (1, 0, gettext ("\
202 : 'N' is only meaningful with the 'x' and 'd' options"));
203 :
204 0 : if (remaining == argc)
205 : {
206 0 : error (0, 0, gettext ("COUNT parameter required"));
207 0 : argp_help (&argp, stderr, ARGP_HELP_SEE,
208 : program_invocation_short_name);
209 0 : exit (EXIT_FAILURE);
210 : }
211 :
212 : char *endp;
213 0 : errno = 0;
214 0 : if (((instance = strtol (argv[remaining], &endp, 10)) == LONG_MAX
215 0 : && errno == ERANGE)
216 0 : || instance <= 0
217 0 : || *endp != '\0')
218 0 : error (1, 0, gettext ("invalid COUNT parameter %s"), argv[remaining]);
219 :
220 0 : ++remaining;
221 : }
222 :
223 4 : if ((dont_replace_existing || allow_truncate_fname)
224 0 : && unlikely (operation != oper_extract))
225 0 : error (1, 0, gettext ("'%c' is only meaningful with the 'x' option"),
226 : dont_replace_existing ? 'C' : 'T');
227 :
228 : /* There must at least be one more parameter specifying the archive. */
229 4 : if (remaining == argc)
230 : {
231 0 : error (0, 0, gettext ("archive name required"));
232 0 : argp_help (&argp, stderr, ARGP_HELP_SEE, program_invocation_short_name);
233 0 : exit (EXIT_FAILURE);
234 : }
235 :
236 4 : const char *arfname = argv[remaining++];
237 4 : argv += remaining;
238 4 : argc -= remaining;
239 :
240 : int status;
241 4 : switch (operation)
242 : {
243 0 : case oper_none:
244 0 : error (0, 0, gettext ("command option required"));
245 0 : argp_help (&argp, stderr, ARGP_HELP_STD_ERR,
246 : program_invocation_short_name);
247 0 : status = 1;
248 0 : break;
249 :
250 2 : case oper_list:
251 : case oper_print:
252 2 : status = do_oper_extract (operation, arfname, argv, argc, -1);
253 2 : break;
254 :
255 0 : case oper_extract:
256 0 : status = do_oper_extract (operation, arfname, argv, argc, instance);
257 0 : break;
258 :
259 1 : case oper_delete:
260 1 : status = do_oper_delete (arfname, argv, argc, instance);
261 1 : break;
262 :
263 1 : case oper_move:
264 : case oper_qappend:
265 : case oper_replace:
266 1 : status = do_oper_insert (operation, arfname, argv, argc, member);
267 1 : break;
268 :
269 : default:
270 0 : assert (! "should not happen");
271 : status = 1;
272 : break;
273 : }
274 :
275 : return status;
276 : }
277 :
278 :
279 : /* Handle program arguments. */
280 : static error_t
281 24 : parse_opt (int key, char *arg __attribute__ ((unused)),
282 : struct argp_state *state __attribute__ ((unused)))
283 : {
284 24 : switch (key)
285 : {
286 4 : case 'd':
287 : case 'm':
288 : case 'p':
289 : case 'q':
290 : case 'r':
291 : case 't':
292 : case 'x':
293 4 : if (operation != oper_none)
294 : {
295 0 : error (0, 0, gettext ("More than one operation specified"));
296 0 : argp_help (&argp, stderr, ARGP_HELP_SEE,
297 : program_invocation_short_name);
298 0 : exit (EXIT_FAILURE);
299 : }
300 :
301 4 : switch (key)
302 : {
303 1 : case 'd':
304 1 : operation = oper_delete;
305 1 : break;
306 0 : case 'm':
307 0 : operation = oper_move;
308 0 : break;
309 0 : case 'p':
310 0 : operation = oper_print;
311 0 : break;
312 0 : case 'q':
313 0 : operation = oper_qappend;
314 0 : break;
315 1 : case 'r':
316 1 : operation = oper_replace;
317 1 : break;
318 2 : case 't':
319 2 : operation = oper_list;
320 2 : break;
321 0 : case 'x':
322 0 : operation = oper_extract;
323 0 : break;
324 : }
325 : break;
326 :
327 0 : case 'a':
328 0 : ipos = ipos_after;
329 0 : break;
330 :
331 0 : case 'b':
332 : case 'i':
333 0 : ipos = ipos_before;
334 0 : break;
335 :
336 0 : case 'c':
337 0 : suppress_create_msg = true;
338 0 : break;
339 :
340 0 : case 'C':
341 0 : dont_replace_existing = true;
342 0 : break;
343 :
344 0 : case 'N':
345 0 : instance_specifed = true;
346 0 : break;
347 :
348 0 : case 'o':
349 0 : preserve_dates = true;
350 0 : break;
351 :
352 0 : case 'P':
353 0 : full_path = true;
354 0 : break;
355 :
356 0 : case 's':
357 0 : force_symtab = true;
358 0 : break;
359 :
360 0 : case 'T':
361 0 : allow_truncate_fname = true;
362 0 : break;
363 :
364 0 : case 'u':
365 0 : update_newer = true;
366 0 : break;
367 :
368 0 : case 'v':
369 0 : verbose = true;
370 0 : break;
371 :
372 : default:
373 : return ARGP_ERR_UNKNOWN;
374 : }
375 : return 0;
376 : }
377 :
378 :
379 : static int
380 4 : open_archive (const char *arfname, int flags, int mode, Elf **elf,
381 : struct stat *st, bool miss_allowed)
382 : {
383 4 : int fd = open (arfname, flags, mode);
384 4 : if (fd == -1)
385 : {
386 1 : if (miss_allowed)
387 : return -1;
388 :
389 0 : error (EXIT_FAILURE, errno, gettext ("cannot open archive '%s'"),
390 : arfname);
391 : }
392 :
393 3 : if (elf != NULL)
394 : {
395 3 : Elf_Cmd cmd = flags == O_RDONLY ? ELF_C_READ_MMAP : ELF_C_RDWR_MMAP;
396 :
397 3 : *elf = elf_begin (fd, cmd, NULL);
398 3 : if (*elf == NULL)
399 0 : error (EXIT_FAILURE, 0, gettext ("cannot open archive '%s': %s"),
400 : arfname, elf_errmsg (-1));
401 :
402 3 : if (flags == O_RDONLY && elf_kind (*elf) != ELF_K_AR)
403 0 : error (EXIT_FAILURE, 0, gettext ("%s: not an archive file"), arfname);
404 : }
405 :
406 4 : if (st != NULL && fstat (fd, st) != 0)
407 0 : error (EXIT_FAILURE, errno, gettext ("cannot stat archive '%s'"),
408 : arfname);
409 :
410 : return fd;
411 : }
412 :
413 :
414 : static void
415 3 : not_found (int argc, char *argv[argc], bool found[argc])
416 : {
417 21 : for (int i = 0; i < argc; ++i)
418 18 : if (!found[i])
419 0 : printf (gettext ("no entry %s in archive\n"), argv[i]);
420 3 : }
421 :
422 :
423 : static int
424 0 : copy_content (Elf *elf, int newfd, off_t off, size_t n)
425 : {
426 : size_t len;
427 0 : char *rawfile = elf_rawfile (elf, &len);
428 :
429 0 : assert (off + n <= len);
430 :
431 : /* Tell the kernel we will read all the pages sequentially. */
432 0 : size_t ps = sysconf (_SC_PAGESIZE);
433 0 : if (n > 2 * ps)
434 0 : posix_madvise (rawfile + (off & ~(ps - 1)), n, POSIX_MADV_SEQUENTIAL);
435 :
436 0 : return write_retry (newfd, rawfile + off, n) != (ssize_t) n;
437 : }
438 :
439 :
440 : static int
441 2 : do_oper_extract (int oper, const char *arfname, char **argv, int argc,
442 : long int instance)
443 2 : {
444 2 : bool found[argc > 0 ? argc : 1];
445 4 : memset (found, '\0', sizeof (found));
446 :
447 2 : size_t name_max = 0;
448 0 : inline bool should_truncate_fname (void)
449 : {
450 0 : if (errno == ENAMETOOLONG && allow_truncate_fname)
451 : {
452 0 : if (name_max == 0)
453 : {
454 0 : long int len = pathconf (".", _PC_NAME_MAX);
455 0 : if (len > 0)
456 0 : name_max = len;
457 : }
458 0 : return name_max != 0;
459 : }
460 : return false;
461 : }
462 :
463 2 : off_t index_off = -1;
464 2 : size_t index_size = 0;
465 2 : off_t cur_off = SARMAG;
466 :
467 2 : int status = 0;
468 : Elf *elf;
469 2 : int fd = open_archive (arfname, O_RDONLY, 0, &elf, NULL, false);
470 :
471 2 : if (hcreate (2 * argc) == 0)
472 0 : error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
473 :
474 0 : for (int cnt = 0; cnt < argc; ++cnt)
475 : {
476 0 : ENTRY entry = { .key = argv[cnt], .data = &argv[cnt] };
477 0 : if (hsearch (entry, ENTER) == NULL)
478 0 : error (EXIT_FAILURE, errno,
479 0 : gettext ("cannot insert into hash table"));
480 : }
481 :
482 : struct stat st;
483 2 : if (force_symtab)
484 : {
485 0 : if (fstat (fd, &st) != 0)
486 : {
487 0 : error (0, errno, gettext ("cannot stat '%s'"), arfname);
488 0 : close (fd);
489 0 : return 1;
490 : }
491 0 : arlib_init ();
492 : }
493 :
494 : Elf_Cmd cmd = ELF_C_READ_MMAP;
495 : Elf *subelf;
496 21 : while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
497 : {
498 19 : Elf_Arhdr *arhdr = elf_getarhdr (subelf);
499 :
500 19 : if (strcmp (arhdr->ar_name, "/") == 0)
501 : {
502 1 : index_off = elf_getaroff (subelf);
503 1 : index_size = arhdr->ar_size;
504 1 : goto next;
505 : }
506 18 : if (strcmp (arhdr->ar_name, "//") == 0)
507 : goto next;
508 :
509 18 : if (force_symtab)
510 : {
511 0 : arlib_add_symbols (elf, arfname, arhdr->ar_name, cur_off);
512 0 : cur_off += (((arhdr->ar_size + 1) & ~((off_t) 1))
513 : + sizeof (struct ar_hdr));
514 : }
515 :
516 18 : bool do_extract = argc <= 0;
517 18 : if (!do_extract)
518 : {
519 : ENTRY entry;
520 0 : entry.key = arhdr->ar_name;
521 0 : ENTRY *res = hsearch (entry, FIND);
522 0 : if (res != NULL && (instance < 0 || instance-- == 0)
523 0 : && !found[(char **) res->data - argv])
524 0 : found[(char **) res->data - argv] = do_extract = true;
525 : }
526 :
527 18 : if (do_extract)
528 : {
529 18 : if (verbose)
530 : {
531 0 : if (oper == oper_print)
532 : {
533 0 : printf ("\n<%s>\n\n", arhdr->ar_name);
534 :
535 : /* We have to flush now because now we use the descriptor
536 : directly. */
537 0 : fflush (stdout);
538 : }
539 0 : else if (oper == oper_list)
540 : {
541 : char datestr[100];
542 0 : strftime (datestr, sizeof (datestr), "%b %e %H:%M %Y",
543 0 : localtime (&arhdr->ar_date));
544 :
545 0 : printf ("%c%c%c%c%c%c%c%c%c %u/%u %6ju %s %s\n",
546 0 : (arhdr->ar_mode & S_IRUSR) ? 'r' : '-',
547 0 : (arhdr->ar_mode & S_IWUSR) ? 'w' : '-',
548 0 : (arhdr->ar_mode & S_IXUSR)
549 0 : ? ((arhdr->ar_mode & S_ISUID) ? 's' : 'x')
550 0 : : ((arhdr->ar_mode & S_ISUID) ? 'S' : '-'),
551 0 : (arhdr->ar_mode & S_IRGRP) ? 'r' : '-',
552 0 : (arhdr->ar_mode & S_IWGRP) ? 'w' : '-',
553 0 : (arhdr->ar_mode & S_IXGRP)
554 0 : ? ((arhdr->ar_mode & S_ISGID) ? 's' : 'x')
555 0 : : ((arhdr->ar_mode & S_ISGID) ? 'S' : '-'),
556 0 : (arhdr->ar_mode & S_IROTH) ? 'r' : '-',
557 0 : (arhdr->ar_mode & S_IWOTH) ? 'w' : '-',
558 0 : (arhdr->ar_mode & S_IXOTH)
559 0 : ? ((arhdr->ar_mode & S_ISVTX) ? 't' : 'x')
560 0 : : ((arhdr->ar_mode & S_ISVTX) ? 'T' : '-'),
561 : arhdr->ar_uid,
562 : arhdr->ar_gid,
563 0 : (uintmax_t) arhdr->ar_size,
564 : datestr,
565 : arhdr->ar_name);
566 : }
567 : else
568 0 : printf ("x - %s\n", arhdr->ar_name);
569 : }
570 :
571 18 : if (oper == oper_list)
572 : {
573 18 : if (!verbose)
574 18 : puts (arhdr->ar_name);
575 :
576 18 : goto next;
577 : }
578 :
579 : size_t nleft;
580 0 : char *data = elf_rawfile (subelf, &nleft);
581 0 : if (data == NULL)
582 : {
583 0 : error (0, 0, gettext ("cannot read content of %s: %s"),
584 : arhdr->ar_name, elf_errmsg (-1));
585 0 : status = 1;
586 0 : goto next;
587 : }
588 :
589 : int xfd;
590 0 : char tempfname[] = "XXXXXX";
591 0 : bool use_mkstemp = true;
592 :
593 0 : if (oper == oper_print)
594 : xfd = STDOUT_FILENO;
595 : else
596 : {
597 0 : xfd = mkstemp (tempfname);
598 0 : if (unlikely (xfd == -1))
599 : {
600 : /* We cannot create a temporary file. Try to overwrite
601 : the file or create it if it does not exist. */
602 0 : int flags = O_WRONLY | O_CREAT;
603 0 : if (dont_replace_existing)
604 : flags |= O_EXCL;
605 : else
606 0 : flags |= O_TRUNC;
607 0 : xfd = open (arhdr->ar_name, flags, 0600);
608 0 : if (unlikely (xfd == -1))
609 : {
610 0 : int printlen = INT_MAX;
611 :
612 0 : if (should_truncate_fname ())
613 0 : {
614 : /* Try to truncate the name. First find out by how
615 : much. */
616 0 : printlen = name_max;
617 0 : char truncfname[name_max + 1];
618 0 : *((char *) mempcpy (truncfname, arhdr->ar_name,
619 0 : name_max)) = '\0';
620 :
621 0 : xfd = open (truncfname, flags, 0600);
622 : }
623 :
624 0 : if (xfd == -1)
625 : {
626 0 : error (0, errno, gettext ("cannot open %.*s"),
627 : (int) printlen, arhdr->ar_name);
628 0 : status = 1;
629 0 : goto next;
630 : }
631 : }
632 :
633 : use_mkstemp = false;
634 : }
635 : }
636 :
637 : ssize_t n;
638 0 : while ((n = TEMP_FAILURE_RETRY (write (xfd, data, nleft))) != -1)
639 : {
640 0 : nleft -= n;
641 0 : if (nleft == 0)
642 : break;
643 0 : data += n;
644 : }
645 :
646 0 : if (unlikely (n == -1))
647 : {
648 0 : error (0, errno, gettext ("failed to write %s"), arhdr->ar_name);
649 0 : status = 1;
650 0 : unlink (tempfname);
651 0 : close (xfd);
652 0 : goto next;
653 : }
654 :
655 0 : if (oper != oper_print)
656 : {
657 : /* Fix up the mode. */
658 0 : if (unlikely (fchmod (xfd, arhdr->ar_mode) != 0))
659 : {
660 0 : error (0, errno, gettext ("cannot change mode of %s"),
661 : arhdr->ar_name);
662 0 : status = 0;
663 : }
664 :
665 0 : if (preserve_dates)
666 : {
667 : struct timespec tv[2];
668 0 : tv[0].tv_sec = arhdr->ar_date;
669 0 : tv[0].tv_nsec = 0;
670 0 : tv[1].tv_sec = arhdr->ar_date;
671 0 : tv[1].tv_nsec = 0;
672 :
673 0 : if (unlikely (futimens (xfd, tv) != 0))
674 : {
675 0 : error (0, errno,
676 0 : gettext ("cannot change modification time of %s"),
677 : arhdr->ar_name);
678 0 : status = 1;
679 : }
680 : }
681 :
682 : /* If we used a temporary file, move it do the right
683 : name now. */
684 0 : if (use_mkstemp)
685 : {
686 : int r;
687 :
688 0 : if (dont_replace_existing)
689 : {
690 0 : r = link (tempfname, arhdr->ar_name);
691 0 : if (likely (r == 0))
692 0 : unlink (tempfname);
693 : }
694 : else
695 0 : r = rename (tempfname, arhdr->ar_name);
696 :
697 0 : if (unlikely (r) != 0)
698 : {
699 0 : int printlen = INT_MAX;
700 :
701 0 : if (should_truncate_fname ())
702 0 : {
703 : /* Try to truncate the name. First find out by how
704 : much. */
705 0 : printlen = name_max;
706 0 : char truncfname[name_max + 1];
707 0 : *((char *) mempcpy (truncfname, arhdr->ar_name,
708 0 : name_max)) = '\0';
709 :
710 0 : if (dont_replace_existing)
711 : {
712 0 : r = link (tempfname, truncfname);
713 0 : if (likely (r == 0))
714 0 : unlink (tempfname);
715 : }
716 : else
717 0 : r = rename (tempfname, truncfname);
718 : }
719 :
720 0 : if (r != 0)
721 : {
722 0 : error (0, errno, gettext ("\
723 : cannot rename temporary file to %.*s"),
724 : printlen, arhdr->ar_name);
725 0 : unlink (tempfname);
726 0 : status = 1;
727 : }
728 : }
729 : }
730 :
731 0 : close (xfd);
732 : }
733 : }
734 :
735 19 : next:
736 19 : cmd = elf_next (subelf);
737 19 : if (elf_end (subelf) != 0)
738 0 : error (1, 0, "%s: %s", arfname, elf_errmsg (-1));
739 : }
740 :
741 2 : hdestroy ();
742 :
743 2 : if (force_symtab)
744 : {
745 0 : arlib_finalize ();
746 :
747 0 : if (symtab.symsnamelen != 0
748 : /* We have to rewrite the file also if it initially had an index
749 : but now does not need one anymore. */
750 0 : || (symtab.symsnamelen == 0 && index_size != 0))
751 0 : {
752 0 : char tmpfname[strlen (arfname) + 7];
753 0 : strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
754 0 : int newfd = mkstemp (tmpfname);
755 0 : if (unlikely (newfd == -1))
756 : {
757 0 : nonew:
758 0 : error (0, errno, gettext ("cannot create new file"));
759 0 : status = 1;
760 : }
761 : else
762 : {
763 : /* Create the header. */
764 0 : if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
765 : {
766 : // XXX Use /prof/self/fd/%d ???
767 0 : nonew_unlink:
768 0 : unlink (tmpfname);
769 0 : if (newfd != -1)
770 0 : close (newfd);
771 : goto nonew;
772 : }
773 :
774 : /* Create the new file. There are three parts as far we are
775 : concerned: 1. original context before the index, 2. the
776 : new index, 3. everything after the new index. */
777 : off_t rest_off;
778 0 : if (index_off != -1)
779 0 : rest_off = (index_off + sizeof (struct ar_hdr)
780 0 : + ((index_size + 1) & ~1ul));
781 : else
782 : rest_off = SARMAG;
783 :
784 0 : if ((symtab.symsnamelen != 0
785 0 : && ((write_retry (newfd, symtab.symsoff,
786 : symtab.symsofflen)
787 0 : != (ssize_t) symtab.symsofflen)
788 0 : || (write_retry (newfd, symtab.symsname,
789 : symtab.symsnamelen)
790 0 : != (ssize_t) symtab.symsnamelen)))
791 : /* Even if the original file had content before the
792 : symbol table, we write it in the correct order. */
793 0 : || (index_off != SARMAG
794 0 : && copy_content (elf, newfd, SARMAG, index_off - SARMAG))
795 0 : || copy_content (elf, newfd, rest_off, st.st_size - rest_off)
796 : /* Set the mode of the new file to the same values the
797 : original file has. */
798 0 : || fchmod (newfd, st.st_mode & ALLPERMS) != 0
799 : /* Never complain about fchown failing. */
800 0 : || (({asm ("" :: "r" (fchown (newfd, st.st_uid,
801 : st.st_gid))); }),
802 0 : close (newfd) != 0)
803 0 : || (newfd = -1, rename (tmpfname, arfname) != 0))
804 : goto nonew_unlink;
805 : }
806 : }
807 : }
808 :
809 2 : elf_end (elf);
810 :
811 2 : close (fd);
812 :
813 2 : not_found (argc, argv, found);
814 :
815 2 : return status;
816 : }
817 :
818 :
819 : struct armem
820 : {
821 : off_t off;
822 : off_t old_off;
823 : size_t size;
824 : long int long_name_off;
825 : struct armem *next;
826 : void *mem;
827 : time_t sec;
828 : uid_t uid;
829 : gid_t gid;
830 : mode_t mode;
831 : const char *name;
832 : Elf *elf;
833 : };
834 :
835 :
836 : static int
837 0 : write_member (struct armem *memb, off_t *startp, off_t *lenp, Elf *elf,
838 : off_t end_off, int newfd)
839 : {
840 : struct ar_hdr arhdr;
841 : /* The ar_name is not actually zero teminated, but we need that for
842 : snprintf. Also if the name is too long, then the string starts
843 : with '/' plus an index off number (decimal). */
844 : char tmpbuf[sizeof (arhdr.ar_name) + 2];
845 :
846 0 : bool changed_header = memb->long_name_off != -1;
847 0 : if (changed_header)
848 : {
849 : /* In case of a long file name we assume the archive header
850 : changed and we write it here. */
851 0 : memcpy (&arhdr, elf_rawfile (elf, NULL) + *startp, sizeof (arhdr));
852 :
853 0 : snprintf (tmpbuf, sizeof (tmpbuf), "/%-*ld",
854 : (int) sizeof (arhdr.ar_name), memb->long_name_off);
855 0 : changed_header = memcmp (arhdr.ar_name, tmpbuf,
856 : sizeof (arhdr.ar_name)) != 0;
857 : }
858 :
859 : /* If the files are adjacent in the old file extend the range. */
860 0 : if (*startp != -1 && !changed_header && *startp + *lenp == memb->old_off)
861 : {
862 : /* Extend the current range. */
863 0 : *lenp += (memb->next != NULL
864 0 : ? memb->next->off : end_off) - memb->off;
865 0 : return 0;
866 : }
867 :
868 : /* Write out the old range. */
869 0 : if (*startp != -1 && copy_content (elf, newfd, *startp, *lenp))
870 : return -1;
871 :
872 0 : *startp = memb->old_off;
873 0 : *lenp = (memb->next != NULL ? memb->next->off : end_off) - memb->off;
874 :
875 0 : if (changed_header)
876 : {
877 0 : memcpy (arhdr.ar_name, tmpbuf, sizeof (arhdr.ar_name));
878 :
879 0 : if (unlikely (write_retry (newfd, &arhdr, sizeof (arhdr))
880 : != sizeof (arhdr)))
881 : return -1;
882 :
883 0 : *startp += sizeof (struct ar_hdr);
884 0 : assert ((size_t) *lenp >= sizeof (struct ar_hdr));
885 0 : *lenp -= sizeof (struct ar_hdr);
886 : }
887 :
888 : return 0;
889 : }
890 :
891 : /* Store the name in the long name table if necessary.
892 : Record its offset or -1 if we did not need to use the table. */
893 : static void
894 : remember_long_name (struct armem *mem, const char *name, size_t namelen)
895 : {
896 18 : mem->long_name_off = (namelen > MAX_AR_NAME_LEN
897 : ? arlib_add_long_name (name, namelen)
898 18 : : -1l);
899 : }
900 :
901 : static int
902 1 : do_oper_delete (const char *arfname, char **argv, int argc,
903 : long int instance)
904 : {
905 1 : bool *found = alloca (sizeof (bool) * argc);
906 2 : memset (found, '\0', sizeof (bool) * argc);
907 :
908 : /* List of the files we keep. */
909 1 : struct armem *to_copy = NULL;
910 :
911 1 : int status = 0;
912 : Elf *elf;
913 : struct stat st;
914 1 : int fd = open_archive (arfname, O_RDONLY, 0, &elf, &st, false);
915 :
916 1 : if (hcreate (2 * argc) == 0)
917 0 : error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
918 :
919 18 : for (int cnt = 0; cnt < argc; ++cnt)
920 : {
921 18 : ENTRY entry = { .key = argv[cnt], .data = &argv[cnt] };
922 18 : if (hsearch (entry, ENTER) == NULL)
923 0 : error (EXIT_FAILURE, errno,
924 0 : gettext ("cannot insert into hash table"));
925 : }
926 :
927 1 : arlib_init ();
928 :
929 1 : off_t cur_off = SARMAG;
930 1 : Elf_Cmd cmd = ELF_C_READ_MMAP;
931 : Elf *subelf;
932 1 : while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
933 : {
934 19 : Elf_Arhdr *arhdr = elf_getarhdr (subelf);
935 :
936 : /* Ignore the symbol table and the long file name table here. */
937 19 : if (strcmp (arhdr->ar_name, "/") == 0
938 18 : || strcmp (arhdr->ar_name, "//") == 0)
939 : goto next;
940 :
941 18 : bool do_delete = argc <= 0;
942 18 : if (!do_delete)
943 : {
944 : ENTRY entry;
945 18 : entry.key = arhdr->ar_name;
946 18 : ENTRY *res = hsearch (entry, FIND);
947 18 : if (res != NULL && (instance < 0 || instance-- == 0)
948 18 : && !found[(char **) res->data - argv])
949 18 : found[(char **) res->data - argv] = do_delete = true;
950 : }
951 :
952 0 : if (do_delete)
953 : {
954 18 : if (verbose)
955 0 : printf ("d - %s\n", arhdr->ar_name);
956 : }
957 : else
958 : {
959 0 : struct armem *newp = alloca (sizeof (struct armem));
960 0 : newp->old_off = elf_getaroff (subelf);
961 0 : newp->off = cur_off;
962 :
963 0 : cur_off += (((arhdr->ar_size + 1) & ~((off_t) 1))
964 : + sizeof (struct ar_hdr));
965 :
966 0 : if (to_copy == NULL)
967 0 : to_copy = newp->next = newp;
968 : else
969 : {
970 0 : newp->next = to_copy->next;
971 0 : to_copy = to_copy->next = newp;
972 : }
973 :
974 : /* If we recreate the symbol table read the file's symbol
975 : table now. */
976 0 : arlib_add_symbols (subelf, arfname, arhdr->ar_name, newp->off);
977 :
978 : /* Remember long file names. */
979 0 : remember_long_name (newp, arhdr->ar_name, strlen (arhdr->ar_name));
980 : }
981 :
982 20 : next:
983 19 : cmd = elf_next (subelf);
984 19 : if (elf_end (subelf) != 0)
985 0 : error (1, 0, "%s: %s", arfname, elf_errmsg (-1));
986 : }
987 :
988 1 : arlib_finalize ();
989 :
990 1 : hdestroy ();
991 :
992 : /* Create a new, temporary file in the same directory as the
993 : original file. */
994 1 : char tmpfname[strlen (arfname) + 7];
995 3 : strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
996 1 : int newfd = mkstemp (tmpfname);
997 1 : if (unlikely (newfd == -1))
998 : goto nonew;
999 :
1000 : /* Create the header. */
1001 1 : if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
1002 : {
1003 : // XXX Use /prof/self/fd/%d ???
1004 0 : nonew_unlink:
1005 0 : unlink (tmpfname);
1006 0 : if (newfd != -1)
1007 0 : close (newfd);
1008 0 : nonew:
1009 0 : error (0, errno, gettext ("cannot create new file"));
1010 0 : status = 1;
1011 0 : goto errout;
1012 : }
1013 :
1014 : /* If the archive is empty that is all we have to do. */
1015 1 : if (likely (to_copy != NULL))
1016 : {
1017 : /* Write the symbol table or the long file name table or both. */
1018 0 : if (symtab.symsnamelen != 0
1019 0 : && ((write_retry (newfd, symtab.symsoff, symtab.symsofflen)
1020 0 : != (ssize_t) symtab.symsofflen)
1021 0 : || (write_retry (newfd, symtab.symsname, symtab.symsnamelen)
1022 0 : != (ssize_t) symtab.symsnamelen)))
1023 : goto nonew_unlink;
1024 :
1025 0 : if (symtab.longnameslen > sizeof (struct ar_hdr)
1026 0 : && (write_retry (newfd, symtab.longnames, symtab.longnameslen)
1027 0 : != (ssize_t) symtab.longnameslen))
1028 : goto nonew_unlink;
1029 :
1030 : /* NULL-terminate the list of files to copy. */
1031 0 : struct armem *last = to_copy;
1032 0 : to_copy = to_copy->next;
1033 0 : last->next = NULL;
1034 :
1035 0 : off_t start = -1;
1036 0 : off_t len = -1;
1037 :
1038 : do
1039 0 : if (write_member (to_copy, &start, &len, elf, cur_off, newfd) != 0)
1040 : goto nonew_unlink;
1041 0 : while ((to_copy = to_copy->next) != NULL);
1042 :
1043 : /* Write the last part. */
1044 0 : if (copy_content (elf, newfd, start, len))
1045 : goto nonew_unlink;
1046 : }
1047 :
1048 : /* Set the mode of the new file to the same values the original file
1049 : has. */
1050 1 : if (fchmod (newfd, st.st_mode & ALLPERMS) != 0
1051 : /* Never complain about fchown failing. */
1052 2 : || (({asm ("" :: "r" (fchown (newfd, st.st_uid, st.st_gid))); }),
1053 1 : close (newfd) != 0)
1054 1 : || (newfd = -1, rename (tmpfname, arfname) != 0))
1055 : goto nonew_unlink;
1056 :
1057 1 : errout:
1058 1 : elf_end (elf);
1059 :
1060 1 : arlib_fini ();
1061 :
1062 1 : close (fd);
1063 :
1064 1 : not_found (argc, argv, found);
1065 :
1066 1 : return status;
1067 : }
1068 :
1069 :
1070 : /* Prints the given value in the given buffer without a trailing zero char.
1071 : Returns false if the given value doesn't fit in the given buffer. */
1072 : static bool
1073 90 : no0print (bool ofmt, char *buf, int bufsize, long int val)
1074 90 : {
1075 90 : char tmpbuf[bufsize + 1];
1076 180 : int ret = snprintf (tmpbuf, sizeof (tmpbuf), ofmt ? "%-*lo" : "%-*ld",
1077 : bufsize, val);
1078 90 : if (ret >= (int) sizeof (tmpbuf))
1079 : return false;
1080 180 : memcpy (buf, tmpbuf, bufsize);
1081 90 : return true;
1082 : }
1083 :
1084 :
1085 : static int
1086 1 : do_oper_insert (int oper, const char *arfname, char **argv, int argc,
1087 : const char *member)
1088 : {
1089 1 : int status = 0;
1090 1 : Elf *elf = NULL;
1091 : struct stat st;
1092 1 : int fd = open_archive (arfname, O_RDONLY, 0, &elf, &st, oper != oper_move);
1093 :
1094 : /* List of the files we keep. */
1095 1 : struct armem *all = NULL;
1096 1 : struct armem *after_memberelem = NULL;
1097 1 : struct armem **found = alloca (sizeof (*found) * argc);
1098 2 : memset (found, '\0', sizeof (*found) * argc);
1099 :
1100 1 : arlib_init ();
1101 :
1102 : /* Initialize early for no_old case. */
1103 1 : off_t cur_off = SARMAG;
1104 :
1105 1 : if (fd == -1)
1106 : {
1107 1 : if (!suppress_create_msg)
1108 1 : fprintf (stderr, "%s: creating %s\n",
1109 : program_invocation_short_name, arfname);
1110 :
1111 : goto no_old;
1112 : }
1113 :
1114 : /* Store the names of all files from the command line in a hash
1115 : table so that we can match it. Note that when no file name is
1116 : given we are basically doing nothing except recreating the
1117 : index. */
1118 0 : if (oper != oper_qappend)
1119 : {
1120 0 : if (hcreate (2 * argc) == 0)
1121 0 : error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
1122 :
1123 0 : for (int cnt = 0; cnt < argc; ++cnt)
1124 : {
1125 : ENTRY entry;
1126 0 : entry.key = full_path ? argv[cnt] : basename (argv[cnt]);
1127 0 : entry.data = &argv[cnt];
1128 0 : if (hsearch (entry, ENTER) == NULL)
1129 0 : error (EXIT_FAILURE, errno,
1130 0 : gettext ("cannot insert into hash table"));
1131 : }
1132 : }
1133 :
1134 : /* While iterating over the current content of the archive we must
1135 : determine a number of things: which archive members to keep,
1136 : which are replaced, and where to insert the new members. */
1137 : Elf_Cmd cmd = ELF_C_READ_MMAP;
1138 : Elf *subelf;
1139 0 : while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
1140 : {
1141 0 : Elf_Arhdr *arhdr = elf_getarhdr (subelf);
1142 :
1143 : /* Ignore the symbol table and the long file name table here. */
1144 0 : if (strcmp (arhdr->ar_name, "/") == 0
1145 0 : || strcmp (arhdr->ar_name, "//") == 0)
1146 : goto next;
1147 :
1148 0 : struct armem *newp = alloca (sizeof (struct armem));
1149 0 : newp->old_off = elf_getaroff (subelf);
1150 0 : newp->size = arhdr->ar_size;
1151 0 : newp->sec = arhdr->ar_date;
1152 0 : newp->mem = NULL;
1153 :
1154 : /* Remember long file names. */
1155 0 : remember_long_name (newp, arhdr->ar_name, strlen (arhdr->ar_name));
1156 :
1157 : /* Check whether this is a file we are looking for. */
1158 0 : if (oper != oper_qappend)
1159 : {
1160 : /* Check whether this is the member used as the insert point. */
1161 0 : if (member != NULL && strcmp (arhdr->ar_name, member) == 0)
1162 : {
1163 : /* Note that all == NULL means insert at the beginning. */
1164 0 : if (ipos == ipos_before)
1165 : after_memberelem = all;
1166 : else
1167 0 : after_memberelem = newp;
1168 : member = NULL;
1169 : }
1170 :
1171 : ENTRY entry;
1172 0 : entry.key = arhdr->ar_name;
1173 0 : ENTRY *res = hsearch (entry, FIND);
1174 0 : if (res != NULL && found[(char **) res->data - argv] == NULL)
1175 : {
1176 0 : found[(char **) res->data - argv] = newp;
1177 :
1178 : /* If we insert before or after a certain element move
1179 : all files to a special list. */
1180 0 : if (unlikely (ipos != ipos_none || oper == oper_move))
1181 : {
1182 0 : if (after_memberelem == newp)
1183 : /* Since we remove this element even though we should
1184 : insert everything after it, we in fact insert
1185 : everything after the previous element. */
1186 0 : after_memberelem = all;
1187 :
1188 0 : goto next;
1189 : }
1190 : }
1191 : }
1192 :
1193 0 : if (all == NULL)
1194 0 : all = newp->next = newp;
1195 : else
1196 : {
1197 0 : newp->next = all->next;
1198 0 : all = all->next = newp;
1199 : }
1200 :
1201 0 : next:
1202 0 : cmd = elf_next (subelf);
1203 0 : if (elf_end (subelf) != 0)
1204 0 : error (EXIT_FAILURE, 0, "%s: %s", arfname, elf_errmsg (-1));
1205 : }
1206 :
1207 0 : if (oper != oper_qappend)
1208 0 : hdestroy ();
1209 :
1210 1 : no_old:
1211 1 : if (member != NULL)
1212 0 : error (EXIT_FAILURE, 0, gettext ("position member %s not found"),
1213 : member);
1214 :
1215 1 : if (oper == oper_move)
1216 : {
1217 : /* Make sure all requested elements are found in the archive. */
1218 0 : for (int cnt = 0; cnt < argc; ++cnt)
1219 : {
1220 0 : if (found[cnt] == NULL)
1221 : {
1222 0 : fprintf (stderr, gettext ("%s: no entry %s in archive!\n"),
1223 0 : program_invocation_short_name, argv[cnt]);
1224 0 : status = 1;
1225 : }
1226 :
1227 0 : if (verbose)
1228 0 : printf ("m - %s\n", argv[cnt]);
1229 : }
1230 : }
1231 : else
1232 : {
1233 : /* Open all the new files, get their sizes and add all symbols. */
1234 18 : for (int cnt = 0; cnt < argc; ++cnt)
1235 : {
1236 18 : const char *bname = basename (argv[cnt]);
1237 18 : size_t bnamelen = strlen (bname);
1238 18 : if (found[cnt] == NULL)
1239 : {
1240 18 : found[cnt] = alloca (sizeof (struct armem));
1241 18 : found[cnt]->old_off = -1;
1242 :
1243 18 : remember_long_name (found[cnt], bname, bnamelen);
1244 : }
1245 :
1246 : struct stat newst;
1247 : Elf *newelf;
1248 36 : int newfd = open (argv[cnt], O_RDONLY);
1249 18 : if (newfd == -1)
1250 : {
1251 0 : error (0, errno, gettext ("cannot open %s"), argv[cnt]);
1252 0 : status = 1;
1253 : }
1254 18 : else if (fstat (newfd, &newst) == -1)
1255 : {
1256 0 : error (0, errno, gettext ("cannot stat %s"), argv[cnt]);
1257 0 : close (newfd);
1258 0 : status = 1;
1259 : }
1260 18 : else if (!S_ISREG (newst.st_mode))
1261 : {
1262 0 : error (0, errno, gettext ("%s is no regular file"), argv[cnt]);
1263 0 : close (newfd);
1264 0 : status = 1;
1265 : }
1266 18 : else if (update_newer
1267 0 : && found[cnt]->old_off != -1l
1268 0 : && found[cnt]->sec > st.st_mtime)
1269 : /* Do nothing, the file in the archive is younger. */
1270 0 : close (newfd);
1271 18 : else if ((newelf = elf_begin (newfd, ELF_C_READ_MMAP, NULL))
1272 : == NULL)
1273 : {
1274 0 : fprintf (stderr,
1275 0 : gettext ("cannot get ELF descriptor for %s: %s\n"),
1276 : argv[cnt], elf_errmsg (-1));
1277 0 : status = 1;
1278 : }
1279 : else
1280 : {
1281 18 : if (verbose)
1282 0 : printf ("%c - %s\n",
1283 0 : found[cnt]->old_off == -1l ? 'a' : 'r', argv[cnt]);
1284 :
1285 18 : found[cnt]->elf = newelf;
1286 18 : found[cnt]->sec = arlib_deterministic_output ? 0 : newst.st_mtime;
1287 18 : found[cnt]->uid = arlib_deterministic_output ? 0 : newst.st_uid;
1288 18 : found[cnt]->gid = arlib_deterministic_output ? 0 : newst.st_gid;
1289 18 : found[cnt]->mode = newst.st_mode;
1290 18 : found[cnt]->name = bname;
1291 :
1292 18 : found[cnt]->mem = elf_rawfile (newelf, &found[cnt]->size);
1293 18 : if (found[cnt]->mem == NULL
1294 18 : || elf_cntl (newelf, ELF_C_FDDONE) != 0)
1295 0 : error (EXIT_FAILURE, 0, gettext ("cannot read %s: %s"),
1296 : argv[cnt], elf_errmsg (-1));
1297 :
1298 18 : close (newfd);
1299 :
1300 18 : if (found[cnt]->old_off != -1l)
1301 : /* Remember long file names. */
1302 0 : remember_long_name (found[cnt], bname, bnamelen);
1303 : }
1304 : }
1305 : }
1306 :
1307 1 : if (status != 0)
1308 : {
1309 0 : elf_end (elf);
1310 :
1311 0 : arlib_fini ();
1312 :
1313 0 : close (fd);
1314 :
1315 0 : return status;
1316 : }
1317 :
1318 : /* If we have no entry point so far add at the end. AFTER_MEMBERELEM
1319 : being NULL when adding before an entry means add at the beginning. */
1320 1 : if (ipos != ipos_before && after_memberelem == NULL)
1321 1 : after_memberelem = all;
1322 :
1323 : /* Convert the circular list into a normal list first. */
1324 1 : if (all != NULL)
1325 : {
1326 0 : struct armem *tmp = all;
1327 0 : all = all->next;
1328 0 : tmp->next = NULL;
1329 : }
1330 :
1331 : struct armem *last_added = after_memberelem;
1332 18 : for (int cnt = 0; cnt < argc; ++cnt)
1333 18 : if (oper != oper_replace || found[cnt]->old_off == -1)
1334 : {
1335 18 : if (last_added == NULL)
1336 : {
1337 1 : found[cnt]->next = all;
1338 1 : last_added = all = found[cnt];
1339 : }
1340 : else
1341 : {
1342 17 : found[cnt]->next = last_added->next;
1343 17 : last_added = last_added->next = found[cnt];
1344 : }
1345 : }
1346 :
1347 : /* Finally compute the offset and add the symbols for the files
1348 : after the insert point. */
1349 1 : if (likely (all != NULL))
1350 18 : for (struct armem *memp = all; memp != NULL; memp = memp->next)
1351 : {
1352 18 : memp->off = cur_off;
1353 :
1354 18 : if (memp->mem == NULL)
1355 : {
1356 : Elf_Arhdr *arhdr;
1357 : /* Fake initializing arhdr and subelf to keep gcc calm. */
1358 0 : asm ("" : "=m" (arhdr), "=m" (subelf));
1359 0 : if (elf_rand (elf, memp->old_off) == 0
1360 0 : || (subelf = elf_begin (fd, ELF_C_READ_MMAP, elf)) == NULL
1361 0 : || (arhdr = elf_getarhdr (subelf)) == NULL)
1362 : /* This should never happen since we already looked at the
1363 : archive content. But who knows... */
1364 0 : error (EXIT_FAILURE, 0, "%s: %s", arfname, elf_errmsg (-1));
1365 :
1366 0 : arlib_add_symbols (subelf, arfname, arhdr->ar_name, cur_off);
1367 :
1368 0 : elf_end (subelf);
1369 : }
1370 : else
1371 18 : arlib_add_symbols (memp->elf, arfname, memp->name, cur_off);
1372 :
1373 18 : cur_off += (((memp->size + 1) & ~((off_t) 1))
1374 : + sizeof (struct ar_hdr));
1375 : }
1376 :
1377 : /* Now we have all the information for the symbol table and long
1378 : file name table. Construct the final layout. */
1379 1 : arlib_finalize ();
1380 :
1381 : /* Create a new, temporary file in the same directory as the
1382 : original file. */
1383 1 : char tmpfname[strlen (arfname) + 7];
1384 3 : strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
1385 : int newfd;
1386 1 : if (fd != -1)
1387 0 : newfd = mkstemp (tmpfname);
1388 : else
1389 : {
1390 1 : newfd = open (arfname, O_RDWR | O_CREAT | O_EXCL, DEFFILEMODE);
1391 1 : if (newfd == -1 && errno == EEXIST)
1392 : /* Bah, first the file did not exist, now it does. Restart. */
1393 0 : return do_oper_insert (oper, arfname, argv, argc, member);
1394 : }
1395 1 : if (unlikely (newfd == -1))
1396 : goto nonew;
1397 :
1398 : /* Create the header. */
1399 1 : if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
1400 : {
1401 0 : nonew_unlink:
1402 0 : if (fd != -1)
1403 : {
1404 : // XXX Use /prof/self/fd/%d ???
1405 0 : unlink (tmpfname);
1406 0 : if (newfd != -1)
1407 0 : close (newfd);
1408 : }
1409 0 : nonew:
1410 0 : error (0, errno, gettext ("cannot create new file"));
1411 0 : status = 1;
1412 0 : goto errout;
1413 : }
1414 :
1415 : /* If the new archive is not empty we actually have something to do. */
1416 1 : if (likely (all != NULL))
1417 : {
1418 : /* Write the symbol table or the long file name table or both. */
1419 1 : if (symtab.symsnamelen != 0
1420 2 : && ((write_retry (newfd, symtab.symsoff, symtab.symsofflen)
1421 1 : != (ssize_t) symtab.symsofflen)
1422 2 : || (write_retry (newfd, symtab.symsname, symtab.symsnamelen)
1423 1 : != (ssize_t) symtab.symsnamelen)))
1424 : goto nonew_unlink;
1425 :
1426 1 : if (symtab.longnameslen > sizeof (struct ar_hdr)
1427 0 : && (write_retry (newfd, symtab.longnames, symtab.longnameslen)
1428 0 : != (ssize_t) symtab.longnameslen))
1429 : goto nonew_unlink;
1430 :
1431 1 : off_t start = -1;
1432 1 : off_t len = -1;
1433 :
1434 20 : while (all != NULL)
1435 : {
1436 18 : if (all->mem != NULL)
1437 : {
1438 : /* This is a new file. If there is anything from the
1439 : archive left to be written do it now. */
1440 18 : if (start != -1 && copy_content (elf, newfd, start, len))
1441 : goto nonew_unlink;
1442 :
1443 18 : start = -1;
1444 18 : len = -1;
1445 :
1446 : /* Create the header. */
1447 : struct ar_hdr arhdr;
1448 : /* The ar_name is not actually zero teminated, but we
1449 : need that for snprintf. Also if the name is too
1450 : long, then the string starts with '/' plus an index
1451 : off number (decimal). */
1452 : char tmpbuf[sizeof (arhdr.ar_name) + 2];
1453 18 : if (all->long_name_off == -1)
1454 : {
1455 18 : size_t namelen = strlen (all->name);
1456 36 : char *p = mempcpy (arhdr.ar_name, all->name, namelen);
1457 18 : *p++ = '/';
1458 18 : memset (p, ' ', sizeof (arhdr.ar_name) - namelen - 1);
1459 : }
1460 : else
1461 : {
1462 0 : snprintf (tmpbuf, sizeof (tmpbuf), "/%-*ld",
1463 : (int) sizeof (arhdr.ar_name), all->long_name_off);
1464 : memcpy (arhdr.ar_name, tmpbuf, sizeof (arhdr.ar_name));
1465 : }
1466 :
1467 18 : if (! no0print (false, arhdr.ar_date, sizeof (arhdr.ar_date),
1468 : all->sec))
1469 : {
1470 0 : error (0, errno, gettext ("cannot represent ar_date"));
1471 : goto nonew_unlink;
1472 : }
1473 18 : if (! no0print (false, arhdr.ar_uid, sizeof (arhdr.ar_uid),
1474 18 : all->uid))
1475 : {
1476 0 : error (0, errno, gettext ("cannot represent ar_uid"));
1477 : goto nonew_unlink;
1478 : }
1479 18 : if (! no0print (false, arhdr.ar_gid, sizeof (arhdr.ar_gid),
1480 18 : all->gid))
1481 : {
1482 0 : error (0, errno, gettext ("cannot represent ar_gid"));
1483 : goto nonew_unlink;
1484 : }
1485 18 : if (! no0print (true, arhdr.ar_mode, sizeof (arhdr.ar_mode),
1486 18 : all->mode))
1487 : {
1488 0 : error (0, errno, gettext ("cannot represent ar_mode"));
1489 : goto nonew_unlink;
1490 : }
1491 18 : if (! no0print (false, arhdr.ar_size, sizeof (arhdr.ar_size),
1492 18 : all->size))
1493 : {
1494 0 : error (0, errno, gettext ("cannot represent ar_size"));
1495 : goto nonew_unlink;
1496 : }
1497 18 : memcpy (arhdr.ar_fmag, ARFMAG, sizeof (arhdr.ar_fmag));
1498 :
1499 18 : if (unlikely (write_retry (newfd, &arhdr, sizeof (arhdr))
1500 : != sizeof (arhdr)))
1501 : goto nonew_unlink;
1502 :
1503 : /* Now the file itself. */
1504 18 : if (unlikely (write_retry (newfd, all->mem, all->size)
1505 : != (off_t) all->size))
1506 : goto nonew_unlink;
1507 :
1508 : /* Pad the file if its size is odd. */
1509 18 : if ((all->size & 1) != 0)
1510 0 : if (unlikely (write_retry (newfd, "\n", 1) != 1))
1511 : goto nonew_unlink;
1512 : }
1513 : else
1514 : {
1515 : /* This is a member from the archive. */
1516 0 : if (write_member (all, &start, &len, elf, cur_off, newfd)
1517 : != 0)
1518 : goto nonew_unlink;
1519 : }
1520 :
1521 18 : all = all->next;
1522 : }
1523 :
1524 : /* Write the last part. */
1525 1 : if (start != -1 && copy_content (elf, newfd, start, len))
1526 : goto nonew_unlink;
1527 : }
1528 :
1529 : /* Set the mode of the new file to the same values the original file
1530 : has. */
1531 1 : if (fd != -1
1532 0 : && (fchmod (newfd, st.st_mode & ALLPERMS) != 0
1533 : /* Never complain about fchown failing. */
1534 0 : || (({asm ("" :: "r" (fchown (newfd, st.st_uid, st.st_gid))); }),
1535 0 : close (newfd) != 0)
1536 0 : || (newfd = -1, rename (tmpfname, arfname) != 0)))
1537 : goto nonew_unlink;
1538 :
1539 1 : errout:
1540 19 : for (int cnt = 0; cnt < argc; ++cnt)
1541 18 : elf_end (found[cnt]->elf);
1542 :
1543 1 : elf_end (elf);
1544 :
1545 1 : arlib_fini ();
1546 :
1547 1 : if (fd != -1)
1548 0 : close (fd);
1549 :
1550 : return status;
1551 : }
1552 :
1553 :
1554 : #include "debugpred.h"
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