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
|
/*
* conflict.c
*
* Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.org>
*
* 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 of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#ifdef CYGWIN
#include <limits.h> /* PATH_MAX */
#endif
#include <sys/stat.h>
/* pacman */
#include "util.h"
#include "conflict.h"
PMList *db_find_conflicts(pmdb_t *db, PMList *targets, char *root)
{
PMList *i, *j, *k;
char *filestr = NULL;
char path[PATH_MAX+1];
char *str = NULL;
struct stat buf, buf2;
PMList *conflicts = NULL;
if(db == NULL || targets == NULL || root == NULL) {
return(NULL);
}
/* CHECK 1: check every db package against every target package */
/* XXX: I've disabled the database-against-targets check for now, as the
* many many strcmp() calls slow it down heavily and most of the
* checking is redundant to the targets-against-filesystem check.
* This will be re-enabled if I can improve performance significantly.
*
pmpkg_t *info = NULL;
char *dbstr = NULL;
db_rewind(db);
while((info = db_scan(db, NULL, INFRQ_DESC | INFRQ_FILES)) != NULL) {
for(i = info->files; i; i = i->next) {
if(i->data == NULL) continue;
dbstr = (char*)i->data;
for(j = targets; j; j = j->next) {
pmpkg_t *targ = (pmpkg_t*)j->data;
if(strcmp(info->name, targ->name)) {
for(k = targ->files; k; k = k->next) {
filestr = (char*)k->data;
if(!strcmp(dbstr, filestr)) {
if(rindex(k->data, '/') == filestr+strlen(filestr)-1) {
continue;
}
MALLOC(str, 512);
snprintf(str, 512, "%s: exists in \"%s\" (target) and \"%s\" (installed)", dbstr,
targ->name, info->name);
conflicts = pm_list_add(conflicts, str);
}
}
}
}
}
FREEPKG(info);
}*/
/* CHECK 2: check every target against every target */
for(i = targets; i; i = i->next) {
pmpkg_t *p1 = (pmpkg_t*)i->data;
for(j = i; j; j = j->next) {
pmpkg_t *p2 = (pmpkg_t*)j->data;
if(strcmp(p1->name, p2->name)) {
for(k = p1->files; k; k = k->next) {
filestr = k->data;
if(!strcmp(filestr, "._install") || !strcmp(filestr, ".INSTALL")) {
continue;
}
if(rindex(filestr, '/') == filestr+strlen(filestr)-1) {
/* this filename has a trailing '/', so it's a directory -- skip it. */
continue;
}
if(pm_list_is_strin(filestr, p2->files)) {
MALLOC(str, 512);
snprintf(str, 512, "%s: exists in \"%s\" (target) and \"%s\" (target)",
filestr, p1->name, p2->name);
conflicts = pm_list_add(conflicts, str);
}
}
}
}
}
/* CHECK 3: check every target against the filesystem */
for(i = targets; i; i = i->next) {
pmpkg_t *p = (pmpkg_t*)i->data;
pmpkg_t *dbpkg = NULL;
for(j = p->files; j; j = j->next) {
filestr = (char*)j->data;
snprintf(path, PATH_MAX, "%s%s", root, filestr);
if(!stat(path, &buf) && !S_ISDIR(buf.st_mode)) {
int ok = 0;
if(dbpkg == NULL) {
dbpkg = db_scan(db, p->name, INFRQ_DESC | INFRQ_FILES);
}
if(dbpkg && pm_list_is_strin(j->data, dbpkg->files)) {
ok = 1;
}
/* Make sure that the supposedly-conflicting file is not actually just
* a symlink that points to a path that used to exist in the package.
*/
/* Check if any part of the conflicting file's path is a symlink */
if(dbpkg && !ok) {
char str[PATH_MAX];
for(k = dbpkg->files; k; k = k->next) {
snprintf(str, PATH_MAX, "%s%s", root, (char*)k->data);
stat(str, &buf2);
if(buf.st_ino == buf2.st_ino) {
ok = 1;
}
}
}
/* Check if the conflicting file has been moved to another package/target */
if(!ok) {
/* Look at all the targets */
for(k = targets; k && !ok; k = k->next) {
pmpkg_t *p1 = (pmpkg_t *)k->data;
/* As long as they're not the current package */
if(strcmp(p1->name, p->name)) {
pmpkg_t *dbpkg2 = NULL;
dbpkg2 = db_scan(db, p1->name, INFRQ_DESC | INFRQ_FILES);
/* If it used to exist in there, but doesn't anymore */
if(dbpkg2 && !pm_list_is_strin(filestr, p1->files) && pm_list_is_strin(filestr, dbpkg2->files)) {
ok = 1;
}
FREEPKG(dbpkg2);
}
}
}
if(!ok) {
MALLOC(str, 512);
snprintf(str, 512, "%s: %s: exists in filesystem", p->name, path);
conflicts = pm_list_add(conflicts, str);
}
}
}
FREEPKG(dbpkg);
}
return(conflicts);
}
/* vim: set ts=2 sw=2 noet: */
|
