#include <sys/types.h>
#include <sys/ipc.h>
+#include <sys/wait.h>
#include <sys/msg.h>
#include <signal.h>
#include <unistd.h>
static struct hotplug_msg *head = NULL;
static char exec_program[100];
+
static void sig_handler(int signum)
{
dbg("caught signal %d", signum);
pmsg->seqnum, pmsg->action, pmsg->devpath, pmsg->subsystem);
}
-static void dispatch_msg(struct hotplug_msg *pmsg)
+static int dispatch_msg(struct hotplug_msg *pmsg)
{
+ pid_t pid;
+ char *argv[3];
+ int retval;
+ extern char **environ;
+
dump_msg(pmsg);
dbg("exec '%s'", exec_program);
+
setenv("ACTION", pmsg->action, 1);
setenv("DEVPATH", pmsg->devpath, 1);
- execl(exec_program, pmsg->subsystem);
+
+ argv[0] = exec_program;
+ argv[1] = pmsg->subsystem;
+ argv[2] = NULL;
+
+ pid = fork();
+ switch (pid) {
+ case 0:
+ retval = execve(argv[0], argv, environ);
+ if (retval != 0) {
+ dbg("child execve failed");
+ exit(1);
+ }
+ break;
+ case -1:
+ dbg("fork failed");
+ return -1;
+ default:
+ wait(0);
+ break;
+ }
+ return 0;
}
static void reset_timer(void)
}
seq = atoi(seqnum);
+ /* create ipc message queue or get id of our existing one */
key = ftok(DEFAULT_EXEC_PROGRAM, IPC_KEY_ID);
size = build_hotplugmsg( (struct hotplug_msg**) &pmsg, action, devpath, subsystem, seq);
msgid = msgget(key, IPC_CREAT);
if (msgid == -1) {
- dbg("open ipc queue error");
+ dbg("error open ipc queue");
goto exit;
}
- /* get state of queue */
+ /* get state of ipc queue */
retval = msgctl(msgid, IPC_STAT, &msg_queue);
if (retval == -1) {
dbg("error getting info on ipc queue");
if (msg_queue.msg_qnum > 0)
dbg("%li messages already in the ipc queue", msg_queue.msg_qnum);
+ /* send ipc message to the daemon */
retval = msgsnd(msgid, pmsg, size, 0);
free_hotplugmsg( (struct hotplug_msg*) pmsg);
if (retval == -1) {
- dbg("send ipc message error");
+ dbg("error sending ipc message");
goto exit;
}
return 0;