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
|
/*
* udevcontrol.c
*
* Copyright (C) 2005 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 version 2 of the License.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <time.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/un.h>
#include "udev.h"
#include "udevd.h"
/* global variables */
static int sock = -1;
static int udev_log = 0;
#ifdef USE_LOG
void log_message (int priority, const char *format, ...)
{
va_list args;
if (priority > udev_log)
return;
va_start(args, format);
vsyslog(priority, format, args);
va_end(args);
}
#endif
int main(int argc, char *argv[], char *envp[])
{
static struct udevd_msg usend_msg;
struct sockaddr_un saddr;
socklen_t addrlen;
const char *env;
const char *val;
int *intval;
int i;
int retval = 1;
env = getenv("UDEV_LOG");
if (env)
udev_log = log_priority(env);
logging_init("udevcontrol");
dbg("version %s", UDEV_VERSION);
if (argc < 2) {
fprintf(stderr, "missing command\n\n");
goto exit;
}
memset(&usend_msg, 0x00, sizeof(struct udevd_msg));
strcpy(usend_msg.magic, UDEV_MAGIC);
for (i = 1 ; i < argc; i++) {
char *arg = argv[i];
if (!strcmp(arg, "stop_exec_queue"))
usend_msg.type = UDEVD_STOP_EXEC_QUEUE;
else if (!strcmp(arg, "start_exec_queue"))
usend_msg.type = UDEVD_START_EXEC_QUEUE;
else if (!strcmp(arg, "reload_rules"))
usend_msg.type = UDEVD_RELOAD_RULES;
else if (!strncmp(arg, "log_priority=", strlen("log_priority="))) {
intval = (int *) usend_msg.envbuf;
val = &arg[strlen("log_priority=")];
usend_msg.type = UDEVD_SET_LOG_LEVEL;
*intval = log_priority(val);
info("send log_priority=%i", *intval);
} else if (!strncmp(arg, "max_childs=", strlen("max_childs="))) {
intval = (int *) usend_msg.envbuf;
val = &arg[strlen("max_childs=")];
usend_msg.type = UDEVD_SET_MAX_CHILDS;
*intval = atoi(val);
info("send max_childs=%i", *intval);
} else if (strcmp(arg, "help") == 0 || strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
printf("Usage: udevcontrol COMMAND\n"
" log_priority=<level> set the udev log level for the daemon\n"
" stop_exec_queue keep udevd from executing events, queue only\n"
" start_exec_queue execute events, flush queue\n"
" reload_rules reloads the rules files\n"
" max_childs=<N> maximum number of childs running at the same time\n"
" --help print this help text\n\n");
exit(0);
} else {
fprintf(stderr, "unknown option\n\n");
exit(1);
}
}
if (getuid() != 0) {
fprintf(stderr, "need to be root, exit\n\n");
exit(1);
}
sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
if (sock == -1) {
err("error getting socket: %s", strerror(errno));
goto exit;
}
memset(&saddr, 0x00, sizeof(struct sockaddr_un));
saddr.sun_family = AF_LOCAL;
/* use abstract namespace for socket path */
strcpy(&saddr.sun_path[1], UDEVD_SOCK_PATH);
addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1;
retval = sendto(sock, &usend_msg, sizeof(usend_msg), 0, (struct sockaddr *)&saddr, addrlen);
if (retval == -1) {
err("error sending message: %s", strerror(errno));
retval = 1;
} else {
dbg("sent message type=0x%02x, %u bytes sent", usend_msg.type, retval);
retval = 0;
}
close(sock);
exit:
logging_close();
return retval;
}
|
