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
|
/*
* Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.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, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <syslog.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include "udev.h"
struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort)
{
struct name_entry *name_loop;
struct name_entry *name_new;
/* avoid duplicate entries */
list_for_each_entry(name_loop, name_list, node) {
if (strcmp(name_loop->name, name) == 0) {
dbg(udev, "'%s' is already in the list\n", name);
return name_loop;
}
}
if (sort)
list_for_each_entry(name_loop, name_list, node) {
if (strcmp(name_loop->name, name) > 0)
break;
}
name_new = malloc(sizeof(struct name_entry));
if (name_new == NULL)
return NULL;
memset(name_new, 0x00, sizeof(struct name_entry));
util_strlcpy(name_new->name, name, sizeof(name_new->name));
dbg(udev, "adding '%s'\n", name_new->name);
list_add_tail(&name_new->node, &name_loop->node);
return name_new;
}
struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value)
{
struct name_entry *name_loop;
struct name_entry *name_new;
size_t keylen = strlen(key);
list_for_each_entry(name_loop, name_list, node) {
if (strncmp(name_loop->name, key, keylen) != 0)
continue;
if (name_loop->name[keylen] != '=')
continue;
dbg(udev, "key already present '%s', replace it\n", name_loop->name);
snprintf(name_loop->name, sizeof(name_loop->name), "%s=%s", key, value);
name_loop->name[sizeof(name_loop->name)-1] = '\0';
return name_loop;
}
name_new = malloc(sizeof(struct name_entry));
if (name_new == NULL)
return NULL;
memset(name_new, 0x00, sizeof(struct name_entry));
snprintf(name_new->name, sizeof(name_new->name), "%s=%s", key, value);
name_new->name[sizeof(name_new->name)-1] = '\0';
dbg(udev, "adding '%s'\n", name_new->name);
list_add_tail(&name_new->node, &name_loop->node);
return name_new;
}
int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key)
{
struct name_entry *name_loop;
struct name_entry *name_tmp;
size_t keylen = strlen(key);
int retval = 0;
list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
if (strncmp(name_loop->name, key, keylen) != 0)
continue;
if (name_loop->name[keylen] != '=')
continue;
list_del(&name_loop->node);
free(name_loop);
retval = 1;
break;
}
return retval;
}
void name_list_cleanup(struct udev *udev, struct list_head *name_list)
{
struct name_entry *name_loop;
struct name_entry *name_tmp;
list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
list_del(&name_loop->node);
free(name_loop);
}
}
uid_t lookup_user(struct udev *udev, const char *user)
{
struct passwd *pw;
uid_t uid = 0;
errno = 0;
pw = getpwnam(user);
if (pw == NULL) {
if (errno == 0 || errno == ENOENT || errno == ESRCH)
err(udev, "specified user '%s' unknown\n", user);
else
err(udev, "error resolving user '%s': %m\n", user);
} else
uid = pw->pw_uid;
return uid;
}
extern gid_t lookup_group(struct udev *udev, const char *group)
{
struct group *gr;
gid_t gid = 0;
errno = 0;
gr = getgrnam(group);
if (gr == NULL) {
if (errno == 0 || errno == ENOENT || errno == ESRCH)
err(udev, "specified group '%s' unknown\n", group);
else
err(udev, "error resolving group '%s': %m\n", group);
} else
gid = gr->gr_gid;
return gid;
}
|
