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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright (C) 2007-2008 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 <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include "udev.h"
static int debug;
static void log_fn(struct udev *udev, int priority,
const char *file, int line, const char *fn,
const char *format, va_list args)
{
if (debug) {
fprintf(stderr, "%s: ", fn);
vfprintf(stderr, format, args);
} else {
vsyslog(priority, format, args);
}
}
struct command {
const char *name;
int (*cmd)(struct udev *udev, int argc, char *argv[]);
const char *help;
int debug;
};
static const struct command cmds[];
static int version(struct udev *udev, int argc, char *argv[])
{
printf("%s\n", VERSION);
return 0;
}
static int help(struct udev *udev, int argc, char *argv[])
{
const struct command *cmd;
printf("Usage: udevadm [--help] [--version] [--debug] COMMAND [COMMAND OPTIONS]\n");
for (cmd = cmds; cmd->name != NULL; cmd++)
if (cmd->help != NULL)
printf(" %-12s %s\n", cmd->name, cmd->help);
printf("\n");
return 0;
}
static const struct command cmds[] = {
{
.name = "info",
.cmd = udevadm_info,
.help = "query sysfs or the udev database",
},
{
.name = "trigger",
.cmd = udevadm_trigger,
.help = "request events from the kernel",
},
{
.name = "settle",
.cmd = udevadm_settle, "",
.help = "wait for the event queue to finish",
},
{
.name = "control",
.cmd = udevadm_control,
.help = "control the udev daemon",
},
{
.name = "monitor",
.cmd = udevadm_monitor,
.help = "listen to kernel and udev events",
},
{
.name = "test",
.cmd = udevadm_test,
.help = "simulation run",
.debug = 1,
},
{
.name = "version",
.cmd = version,
},
{
.name = "help",
.cmd = help,
},
{}
};
static int run_command(struct udev *udev, const struct command *cmd, int argc, char *argv[])
{
if (cmd->debug) {
debug = 1;
if (udev_get_log_priority(udev) < LOG_INFO)
udev_set_log_priority(udev, LOG_INFO);
}
info(udev, "calling: %s\n", cmd->name);
return cmd->cmd(udev, argc, argv);
}
int main(int argc, char *argv[])
{
struct udev *udev;
static const struct option options[] = {
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{}
};
const char *command;
int i;
const char *pos;
int rc = 1;
udev = udev_new();
if (udev == NULL)
goto out;
logging_init("udevadm");
udev_set_log_fn(udev, log_fn);
udev_selinux_init(udev);
/* see if we are a compat link, this will be removed in a future release */
command = argv[0];
pos = strrchr(command, '/');
if (pos != NULL)
command = &pos[1];
/* the trailing part of the binary or link name is the command */
if (strncmp(command, "udev", 4) == 0)
command = &command[4];
for (i = 0; cmds[i].cmd != NULL; i++) {
if (strcmp(cmds[i].name, command) == 0) {
char path[128];
char prog[512];
ssize_t len;
snprintf(path, sizeof(path), "/proc/%lu/exe", (unsigned long) getppid());
len = readlink(path, prog, sizeof(prog));
if (len > 0) {
prog[len] = '\0';
fprintf(stderr, "the program '%s' called '%s', it should use 'udevadm %s <options>', "
"this will stop working in a future release\n", prog, argv[0], command);
err(udev, "the program '%s' called '%s', it should use 'udevadm %s <options>', "
"this will stop working in a future release\n", prog, argv[0], command);
}
rc = run_command(udev, &cmds[i], argc, argv);
goto out;
}
}
while (1) {
int option;
option = getopt_long(argc, argv, "+dhV", options, NULL);
if (option == -1)
break;
switch (option) {
case 'd':
debug = 1;
if (udev_get_log_priority(udev) < LOG_INFO)
udev_set_log_priority(udev, LOG_INFO);
break;
case 'h':
rc = help(udev, argc, argv);
goto out;
case 'V':
rc = version(udev, argc, argv);
goto out;
default:
goto out;
}
}
command = argv[optind];
if (command != NULL)
for (i = 0; cmds[i].cmd != NULL; i++) {
if (strcmp(cmds[i].name, command) == 0) {
argc -= optind;
argv += optind;
optind = 0;
rc = run_command(udev, &cmds[i], argc, argv);
goto out;
}
}
fprintf(stderr, "missing or unknown command\n\n");
help(udev, argc, argv);
rc = 2;
out:
udev_selinux_exit(udev);
udev_unref(udev);
logging_close();
return rc;
}
|
