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
|
/* $OpenBSD: replace.c,v 1.3 1997/06/17 20:47:09 kstailey Exp $ */
/* $NetBSD: replace.c,v 1.6 1995/03/26 03:28:01 glass Exp $ */
/*-
* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Hugh Smith at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)replace.c 8.3 (Berkeley) 4/2/94";
#else
static char rcsid[] = "$OpenBSD: replace.c,v 1.3 1997/06/17 20:47:09 kstailey Exp $";
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <ar.h>
#include <dirent.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "archive.h"
#include "extern.h"
/*
* replace --
* Replace or add named members to archive. Entries already in the
* archive are swapped in place. Others are added before or after
* the key entry, based on the a, b and i options. If the u option
* is specified, modification dates select for replacement.
*/
int
replace(argv)
char **argv;
{
char *file;
int afd, curfd, errflg, exists, mods, sfd, tfd1, tfd2;
struct stat sb;
CF cf;
off_t size, tsize;
errflg = 0;
/*
* If doesn't exist, simply append to the archive. There's
* a race here, but it's pretty short, and not worth fixing.
*/
exists = !stat(archive, &sb);
afd = open_archive(O_CREAT|O_RDWR);
if (!exists) {
tfd1 = -1;
tfd2 = tmp();
goto append;
}
tfd1 = tmp(); /* Files before key file. */
tfd2 = tmp(); /* Files after key file. */
/*
* Break archive into two parts -- entries before and after the key
* entry. If positioning before the key, place the key at the
* beginning of the after key entries and if positioning after the
* key, place the key at the end of the before key entries. Put it
* all back together at the end.
*/
mods = (options & (AR_A|AR_B));
for (curfd = tfd1; get_arobj(afd);) {
if (*argv && (file = files(argv))) {
if ((sfd = open(file, O_RDONLY)) < 0) {
errflg = 1;
warn("%s", file);
goto useold;
}
(void)fstat(sfd, &sb);
if (options & AR_U && sb.st_mtime <= chdr.date) {
close(sfd);
goto useold;
}
if (options & AR_V)
(void)printf("r - %s\n", file);
/* Read from disk, write to an archive; pad on write */
SETCF(sfd, file, curfd, tname, WPAD);
put_arobj(&cf, &sb);
(void)close(sfd);
skip_arobj(afd);
continue;
}
if (mods && compare(posname)) {
mods = 0;
if (options & AR_B)
curfd = tfd2;
/* Read and write to an archive; pad on both. */
SETCF(afd, archive, curfd, tname, RPAD|WPAD);
put_arobj(&cf, NULL);
if (options & AR_A)
curfd = tfd2;
} else {
/* Read and write to an archive; pad on both. */
useold: SETCF(afd, archive, curfd, tname, RPAD|WPAD);
put_arobj(&cf, NULL);
}
}
if (mods) {
warnx("%s: archive member not found", posarg);
close_archive(afd);
return (1);
}
/* Append any left-over arguments to the end of the after file. */
append: while (file = *argv++) {
if (options & AR_V)
(void)printf("a - %s\n", file);
if ((sfd = open(file, O_RDONLY)) < 0) {
errflg = 1;
warn("%s", file);
continue;
}
(void)fstat(sfd, &sb);
/* Read from disk, write to an archive; pad on write. */
SETCF(sfd, file,
options & (AR_A|AR_B) ? tfd1 : tfd2, tname, WPAD);
put_arobj(&cf, &sb);
(void)close(sfd);
}
(void)lseek(afd, (off_t)SARMAG, SEEK_SET);
SETCF(tfd1, tname, afd, archive, NOPAD);
if (tfd1 != -1) {
tsize = size = lseek(tfd1, (off_t)0, SEEK_CUR);
(void)lseek(tfd1, (off_t)0, SEEK_SET);
copy_ar(&cf, size);
} else
tsize = 0;
tsize += size = lseek(tfd2, (off_t)0, SEEK_CUR);
(void)lseek(tfd2, (off_t)0, SEEK_SET);
cf.rfd = tfd2;
copy_ar(&cf, size);
(void)ftruncate(afd, tsize + SARMAG);
close_archive(afd);
return (errflg);
}
|
