-/*
- * 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 "udev.h"
-#include "udevd.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_config_init();
-#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);
-
- /* ignore events which are already sent on the netlink socket */
- if (strncmp(key, "SEQNUM=", 7) == 0) {
- dbg("ignoring event with SEQNUM set");
- retval = 0;
- goto exit;
- }
-
- /* 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;
-}
~ianmdlvl / elogind.git / commitdiff