2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Hugh Smith at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)replace.c 8.3 (Berkeley) 4/2/94
39 #include <sys/param.h>
55 * Replace or add named members to archive. Entries already in the
56 * archive are swapped in place. Others are added before or after
57 * the key entry, based on the a, b and i options. If the u option
58 * is specified, modification dates select for replacement.
65 int afd, curfd, errflg, exists, mods, sfd, tfd1, tfd2;
72 * If doesn't exist, simply append to the archive. There's
73 * a race here, but it's pretty short, and not worth fixing.
75 exists = !stat(archive, &sb);
76 afd = open_archive(O_CREAT|O_RDWR);
84 tfd1 = tmp(); /* Files before key file. */
85 tfd2 = tmp(); /* Files after key file. */
88 * Break archive into two parts -- entries before and after the key
89 * entry. If positioning before the key, place the key at the
90 * beginning of the after key entries and if positioning after the
91 * key, place the key at the end of the before key entries. Put it
92 * all back together at the end.
94 mods = (options & (AR_A|AR_B));
95 for (curfd = tfd1; get_arobj(afd);) {
96 if (*argv && (file = files(argv))) {
97 if ((sfd = open(file, O_RDONLY)) < 0) {
102 (void)fstat(sfd, &sb);
103 if (options & AR_U && sb.st_mtime <= chdr.date) {
109 (void)printf("r - %s\n", file);
111 /* Read from disk, write to an archive; pad on write */
112 SETCF(sfd, file, curfd, tname, WPAD);
119 if (mods && compare(posname)) {
123 /* Read and write to an archive; pad on both. */
124 SETCF(afd, archive, curfd, tname, RPAD|WPAD);
125 put_arobj(&cf, (struct stat *)NULL);
129 /* Read and write to an archive; pad on both. */
130 useold: SETCF(afd, archive, curfd, tname, RPAD|WPAD);
131 put_arobj(&cf, (struct stat *)NULL);
136 warnx("%s: archive member not found", posarg);
141 /* Append any left-over arguments to the end of the after file. */
142 append: while ( (file = *argv++) ) {
144 (void)printf("a - %s\n", file);
145 if ((sfd = open(file, O_RDONLY)) < 0) {
150 (void)fstat(sfd, &sb);
151 /* Read from disk, write to an archive; pad on write. */
153 options & (AR_A|AR_B) ? tfd1 : tfd2, tname, WPAD);
158 (void)lseek(afd, (off_t)SARMAG, SEEK_SET);
160 SETCF(tfd1, tname, afd, archive, NOPAD);
162 tsize = size = lseek(tfd1, (off_t)0, SEEK_CUR);
163 (void)lseek(tfd1, (off_t)0, SEEK_SET);
168 tsize += size = lseek(tfd2, (off_t)0, SEEK_CUR);
169 (void)lseek(tfd2, (off_t)0, SEEK_SET);
173 (void)ftruncate(afd, tsize + SARMAG);