mirror of
https://github.com/systemd/systemd.git
synced 2024-12-25 01:34:28 +03:00
4389ec08fb
Doesn't make any sense these days to let the kernel start the daemon. Signed-off-by: Kay Sievers <kay.sievers@suse.de>
135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/*
|
|
* udevsend.c
|
|
*
|
|
* Copyright (C) 2004 Ling, Xiaofeng <xiaofeng.ling@intel.com>
|
|
* Copyright (C) 2004 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/un.h>
|
|
#include <linux/stddef.h>
|
|
|
|
#include "udev.h"
|
|
#include "udev_version.h"
|
|
#include "udevd.h"
|
|
#include "logging.h"
|
|
|
|
/* global variables */
|
|
static int sock = -1;
|
|
|
|
#ifdef USE_LOG
|
|
void log_message (int priority, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
if (priority > udev_log_priority)
|
|
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;
|
|
int usend_msg_len;
|
|
int i;
|
|
struct sockaddr_un saddr;
|
|
socklen_t addrlen;
|
|
int bufpos = 0;
|
|
int retval = 0;
|
|
const char *subsystem = NULL;
|
|
|
|
logging_init("udevsend");
|
|
#ifdef USE_LOG
|
|
udev_init_config();
|
|
#endif
|
|
dbg("version %s", UDEV_VERSION);
|
|
|
|
sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
|
|
if (sock < 0) {
|
|
err("error getting socket: %s", strerror(errno));
|
|
retval = 1;
|
|
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;
|
|
|
|
memset(&usend_msg, 0x00, sizeof(struct udevd_msg));
|
|
strcpy(usend_msg.magic, UDEV_MAGIC);
|
|
usend_msg.type = UDEVD_UEVENT_UDEVSEND;
|
|
|
|
/* copy all keys to send buffer */
|
|
for (i = 0; envp[i]; i++) {
|
|
const char *key;
|
|
int keylen;
|
|
|
|
key = envp[i];
|
|
keylen = strlen(key);
|
|
|
|
/* prevent loops in the scripts we execute */
|
|
if (strncmp(key, "UDEVD_EVENT=", 12) == 0) {
|
|
err("event loop, already passed through the daemon, exit");
|
|
retval = 2;
|
|
goto exit;
|
|
}
|
|
|
|
if (bufpos + keylen >= UEVENT_BUFFER_SIZE-1) {
|
|
err("environment buffer too small, probably not called by the kernel");
|
|
continue;
|
|
}
|
|
|
|
/* remember the SUBSYSTEM */
|
|
if (strncmp(key, "SUBSYSTEM=", 10) == 0)
|
|
subsystem = &key[10];
|
|
|
|
dbg("add '%s' to env[%i] buffer", key, i);
|
|
strcpy(&usend_msg.envbuf[bufpos], key);
|
|
bufpos += keylen + 1;
|
|
}
|
|
|
|
usend_msg_len = offsetof(struct udevd_msg, envbuf) + bufpos;
|
|
dbg("usend_msg_len=%i", usend_msg_len);
|
|
|
|
if (sendto(sock, &usend_msg, usend_msg_len, 0, (struct sockaddr *)&saddr, addrlen) < 0) {
|
|
retval = 3;
|
|
err("error sending message: %s", strerror(errno));
|
|
}
|
|
|
|
exit:
|
|
if (sock != -1)
|
|
close(sock);
|
|
|
|
logging_close();
|
|
return retval;
|
|
}
|