75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/*
|
|
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
|
|
* run_svc
|
|
* part of cinit
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
//#include <signal.h>
|
|
|
|
|
|
#include "cinit.h"
|
|
|
|
/* run a service, gets (relative or absolute) path */
|
|
pid_t respawn_svc(char *abspath)
|
|
{
|
|
pid_t pid;
|
|
int status;
|
|
int pipefd[2];
|
|
// struct sigaction sa;
|
|
|
|
if(pipe(pipefd) == -1) {
|
|
perror(MSG_ERR_PIPE);
|
|
return 0;
|
|
}
|
|
|
|
pid = fork();
|
|
if(pid == -1) {
|
|
perror(MSG_ERR_FORK);
|
|
return 0;
|
|
}
|
|
|
|
/******************** PARENT ********************/
|
|
if(pid > 0) {
|
|
/* if we read anything, our child succeded */
|
|
if( read(pipefd[0],&status,sizeof(status)) == -1) {
|
|
perror(MSG_ERR_IO);
|
|
return 0;
|
|
}
|
|
return pid; /* return watchers pid */
|
|
}
|
|
|
|
/******************** CHILD ********************/
|
|
/* FIXME: add handling for SIGTERM! */
|
|
// sa.sa_handler= ( (void*)(int) ) sig_terminate;
|
|
// sigaction(SIGTERM,&sa,NULL); /* term = kill respawing process */
|
|
|
|
status = 1;
|
|
if( write(pipefd[1],&status,sizeof(status)) == -1) {
|
|
perror(MSG_ERR_IO);
|
|
_exit(1);
|
|
}
|
|
|
|
while( status ) {
|
|
D_PRINTF(abspath);
|
|
pid = exec_svc(abspath, status);
|
|
|
|
waitpid(pid,&status,0);
|
|
|
|
if( WIFEXITED(status) ) {
|
|
if( WEXITSTATUS(status) ) { /* non-zero exit status */
|
|
/* sleep conf/c_sleep seconds on error exit */
|
|
sleep(SLEEP_SVC);
|
|
D_PRINTF("schlecht gestorben");
|
|
}
|
|
} else {
|
|
sleep(SLEEP_SVC);
|
|
D_PRINTF("nicht normal gestorben");
|
|
}
|
|
}
|
|
|
|
_exit(0);
|
|
}
|