www.nico.schottelius.org/software/cinit/browse_source/cinit-0.0.7/old/run_svc.c00

/* 
 * (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
 * run_svc
 * part of cinit
 */

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <limits.h>
#include <stdlib.h>
#include <errno.h>
#include <dirent.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>


#include "cinit.h"

/* Run a service */
/* We _MUST_ return!!! */
int run_svc(char *rpath)
{
   int tmp, sid;
   char abspath[PATH_MAX], pathtmp[PATH_MAX]; /* pathtmp = use-it-for-all bitch*/
   struct stat buf;
   struct sockaddr_un addr;

   D_PRINTF("starte run_svc");
   D_PRINTF(rpath);

   /******************* begin socket *********************/
   close(sock); /* close old socket connection, we are a fork()! */

   sock = socket(PF_UNIX,SOCK_STREAM,0);
   if( sock == -1 ) {
      perror("socket");
      return 0;
   }
   tmp = sizeof(addr);
   memset(&addr,0,tmp);
   strcpy(addr.sun_path, CINIT_SOCK);
   addr.sun_family   = AF_UNIX;
   
   /* FIXME: why do we need tmp????? ... tmp == 1 is wrong!*/
/*   tmp = 1;
   if(setsockopt(sock, SOL_SOCKET, SO_PASSCRED, &tmp, sizeof(tmp)) == -1) {
      perror("passcred");
      return 0;
   } */

   if(connect(sock,(struct sockaddr *)&addr,tmp) == -1) {
      perror("connect");
      return 0;
   }

   /******************* absolute PATH ***************/
   /* get current working dir */
   if(! (int) getcwd(pathtmp,PATH_MAX)) {
      perror("getcwd");
      return 0;
   }

   /* change to rpath */
   if(chdir(rpath) == -1) {
      perror("chdir");
      return 0;
   }

   /* get absolute name of rpath */
   if(! (int) getcwd(abspath,PATH_MAX)) {
      perror("getcwd2");
      return 0;
   }

   /* change back */
   if(chdir(pathtmp) == -1) {
      perror("chdir2");
      return 0;
   }
   
   /******************* REGISTER SERVICE ***************/
   D_PRINTF(abspath);
   tmp = msg_start_svc(abspath);    /* mark us as temporary */
   if(tmp == -1) return 1;          /* already started */

   /******************* BEGIN DEPENDENCIES ***************/
   D_PRINTF("Starte needs");
   strcpy(pathtmp,abspath);
   strcat(pathtmp,"/");
   strcat(pathtmp,C_NEEDS);
   if( ! run_run_svcs(pathtmp) ) {
      D_PRINTF("some NEEDED services failed)");
      return 0;
   }
   
   D_PRINTF("Starte wants");
   strcpy(pathtmp,abspath);
   strcat(pathtmp,"/");
   strcat(pathtmp,C_WANTS);
   run_run_svcs(pathtmp);  /* don't care about what happens with the want svc */

   /******************* execute services ***************/
   strcpy(pathtmp,abspath);
   strcat(pathtmp,"/");
   strcat(pathtmp,C_RESPAWN);
   
   tmp = ST_ONCE;
   sid = 20;
   D_PRINTF("Melde status");
   if(!do_change_status(abspath,&tmp,&sid,sock,ACT_WRITE)) {
      D_PRINTF("Status nicht gemeldet :(((((((((((");
      return 0;
   }
   D_PRINTF("Status abgesetzt");

/*   if( stat(pathtmp,&buf) == 0) {
      D_PRINTF("Respawn, ja das werden wir tun");
      if(respawn_svc(abspath)) {
         msg_change_status(sid,ST_RESPAWN);
      } else {
         D_PRINTF("error in respawn");
         msg_change_status(sid,ST_FAIL);
      }
   } else {
      D_PRINTF("einmal ausfuehren");
      if(exec_svc(abspath)) {
         msg_change_status(sid,ST_ONCE);
      } else {
         D_PRINTF("error einmalig");
         msg_change_status(sid,ST_FAIL);
      }
   } */
}