ar_subs.c (c9a8d1f4ddce0e113129507ab55689b6e922f60d) ar_subs.c (46be34b90213ebd9037cb2c24aec0009d7f2f5c1)
1/*-
2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
8 *

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35 * SUCH DAMAGE.
36 */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)ar_subs.c 8.2 (Berkeley) 4/18/94";
41#endif
42static const char rcsid[] =
1/*-
2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
8 *

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35 * SUCH DAMAGE.
36 */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)ar_subs.c 8.2 (Berkeley) 4/18/94";
41#endif
42static const char rcsid[] =
43 "$Id$";
43 "$Id: ar_subs.c,v 1.11 1998/05/15 06:27:36 charnier Exp $";
44#endif /* not lint */
45
46#include <sys/types.h>
47#include <sys/time.h>
48#include <sys/stat.h>
49#include <signal.h>
50#include <string.h>
51#include <stdio.h>

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249 * a bad name mod, skip and purge name from link table
250 */
251 purg_lnk(arcn);
252 (void)rd_skip(arcn->skip + arcn->pad);
253 continue;
254 }
255
256 /*
44#endif /* not lint */
45
46#include <sys/types.h>
47#include <sys/time.h>
48#include <sys/stat.h>
49#include <signal.h>
50#include <string.h>
51#include <stdio.h>

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249 * a bad name mod, skip and purge name from link table
250 */
251 purg_lnk(arcn);
252 (void)rd_skip(arcn->skip + arcn->pad);
253 continue;
254 }
255
256 /*
257 * Non standard -Y and -Z flag. When the exisiting file is
257 * Non standard -Y and -Z flag. When the existing file is
258 * same age or newer skip
259 */
260 if ((Yflag || Zflag) && ((lstat(arcn->name, &sb) == 0))) {
261 if (Yflag && Zflag) {
262 if ((arcn->sb.st_mtime <= sb.st_mtime) &&
263 (arcn->sb.st_ctime <= sb.st_ctime)) {
264 (void)rd_skip(arcn->skip + arcn->pad);
265 continue;

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505 * pad as required, cnt is number of bytes not written
506 */
507 if (((cnt > 0) && (wr_skip(cnt) < 0)) ||
508 ((arcn->pad > 0) && (wr_skip(arcn->pad) < 0)))
509 break;
510 }
511
512 /*
258 * same age or newer skip
259 */
260 if ((Yflag || Zflag) && ((lstat(arcn->name, &sb) == 0))) {
261 if (Yflag && Zflag) {
262 if ((arcn->sb.st_mtime <= sb.st_mtime) &&
263 (arcn->sb.st_ctime <= sb.st_ctime)) {
264 (void)rd_skip(arcn->skip + arcn->pad);
265 continue;

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505 * pad as required, cnt is number of bytes not written
506 */
507 if (((cnt > 0) && (wr_skip(cnt) < 0)) ||
508 ((arcn->pad > 0) && (wr_skip(arcn->pad) < 0)))
509 break;
510 }
511
512 /*
513 * tell format to write trailer; pad to block boundry; reset directory
513 * tell format to write trailer; pad to block boundary; reset directory
514 * mode/access times, and check if all patterns supplied by the user
515 * were matched. block off signals to avoid chance for multiple entry
516 * into the cleanup code
517 */
518 if (wr_one) {
519 (*frmt->end_wr)();
520 wr_fin();
521 }

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538 * Care is taken so that these do not end up as links to the older
539 * version of the same file already stored in the archive. It is expected
540 * when extraction occurs these newer versions will over-write the older
541 * ones stored "earlier" in the archive (this may be a bad assumption as
542 * it depends on the implementation of the program doing the extraction).
543 * It is really difficult to splice in members without either re-writing
544 * the entire archive (from the point were the old version was), or having
545 * assistance of the format specification in terms of a special update
514 * mode/access times, and check if all patterns supplied by the user
515 * were matched. block off signals to avoid chance for multiple entry
516 * into the cleanup code
517 */
518 if (wr_one) {
519 (*frmt->end_wr)();
520 wr_fin();
521 }

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538 * Care is taken so that these do not end up as links to the older
539 * version of the same file already stored in the archive. It is expected
540 * when extraction occurs these newer versions will over-write the older
541 * ones stored "earlier" in the archive (this may be a bad assumption as
542 * it depends on the implementation of the program doing the extraction).
543 * It is really difficult to splice in members without either re-writing
544 * the entire archive (from the point were the old version was), or having
545 * assistance of the format specification in terms of a special update
546 * header that invalidates a previous archive record. The posix spec left
546 * header that invalidates a previous archive record. The POSIX spec left
547 * the method used to implement -u unspecified. This pax is able to
548 * over write existing files that it creates.
549 */
550
551#if __STDC__
552void
553append(void)
554#else

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563 int udev;
564 off_t tlen;
565
566 arcn = &archd;
567 orgfrmt = frmt;
568
569 /*
570 * Do not allow an append operation if the actual archive is of a
547 * the method used to implement -u unspecified. This pax is able to
548 * over write existing files that it creates.
549 */
550
551#if __STDC__
552void
553append(void)
554#else

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563 int udev;
564 off_t tlen;
565
566 arcn = &archd;
567 orgfrmt = frmt;
568
569 /*
570 * Do not allow an append operation if the actual archive is of a
571 * different format than the user specified foramt.
571 * different format than the user specified format.
572 */
573 if (get_arc() < 0)
574 return;
575 if ((orgfrmt != NULL) && (orgfrmt != frmt)) {
576 pax_warn(1, "Cannot mix current archive format %s with %s",
577 frmt->name, orgfrmt->name);
578 return;
579 }

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659 * done, finish up read and get the number of bytes to back up so we
660 * can add new members. The format might have used the hard link table,
661 * purge it.
662 */
663 tlen = (*frmt->end_rd)();
664 lnk_end();
665
666 /*
572 */
573 if (get_arc() < 0)
574 return;
575 if ((orgfrmt != NULL) && (orgfrmt != frmt)) {
576 pax_warn(1, "Cannot mix current archive format %s with %s",
577 frmt->name, orgfrmt->name);
578 return;
579 }

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659 * done, finish up read and get the number of bytes to back up so we
660 * can add new members. The format might have used the hard link table,
661 * purge it.
662 */
663 tlen = (*frmt->end_rd)();
664 lnk_end();
665
666 /*
667 * try to postion for write, if this fails quit. if any error occurs,
667 * try to position for write, if this fails quit. if any error occurs,
668 * we will refuse to write
669 */
670 if (appnd_start(tlen) < 0)
671 return;
672
673 /*
674 * tell the user we are done reading.
675 */

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669 */
670 if (appnd_start(tlen) < 0)
671 return;
672
673 /*
674 * tell the user we are done reading.
675 */

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