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import cinit from unix.schottelius.org

Browse source 
Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>
This commit is contained in:
Nico Schottelius 2009-09-16 12:53:45 +02:00
commit 423ba10303
13396 changed files with 269468 additions and 0 deletions
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151
software/cinit/browse_source/cinit-0.1/serv/sigio.c Normal file
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/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* handle client requests
*/
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include "cinit.h"
/***********************************************************************
* sigio: client handling
*/
/* we are called, if one or _more_ connections are waiting */
void sigio(int socket)
{
int tmp, nsock;
char buf[PATH_MAX+1], status;
struct listitem *list_tmp;
pid_t pid;
while (
(nsock = accept(socket,(struct sockaddr *) NULL, (socklen_t *) NULL) )
!= -1) {
D_PRINTF("sigio...");
if( read(nsock,&buf[0],1) == -1) {
perror(MSG_ERR_READ);
close(nsock);
continue;
}
#ifdef DEBUG
printf("CMD: %d\n",buf[0]);
#endif
switch(buf[0]) {
/********************** START SERVICE *******************/
case CMD_START_SVC:
tmp = do_svc_name(nsock,buf,ACT_SERV);
if(!tmp) break;
buf[tmp] = 0;
D_PRINTF(buf);
list_tmp = list_search(buf);
if(list_tmp != NULL) { /* service already exists, return status */
status = list_tmp->status;
do_result(nsock,&status);
break;
}
tmp = list_insert(buf,ST_TMP); /* add service */
if(!tmp) { /* failed */
LOG(MSG_ERR_ADD_SVC);
status = 0;
} else {
status = ST_TMPNOW;
}
do_result(nsock,&status);
break;
/********************** STOP RESPAWNING *******************/
case CMD_STOP_SVC:
tmp = do_svc_name(nsock,buf,ACT_SERV);
if(!tmp) break;
buf[tmp] = 0;
D_PRINTF(buf);
list_tmp = list_search(buf);
if(list_tmp != NULL) { /* service exists */
if(list_tmp->status == ST_RESPAWN) {
D_PRINTF("respawner ausschalten");
kill(list_tmp->pid,SIGTERM);
#ifdef DEBUG
printf("pid=%d\n",list_tmp->pid);
#endif
/* wait for watcher to terminate */
waitpid(list_tmp->pid,&tmp,0);
D_PRINTF("liste modifizieren");
status = ST_OFF;
if(!list_modify(buf,status,list_tmp->pid)) {
D_PRINTF("mod-aus fail");
status = ST_FAIL;
} else { /* return status */
D_PRINTF("kein respawn");
status = list_tmp->status;
}
}
} else { /* no service there */
status = ST_OFF;
}
do_result(nsock,&status);
break;
/********************** CHANGE SERVICE STATUS *******************/
case CMD_CHG_STATUS:
tmp = do_change_status(buf,&status,&pid,nsock,ACT_SERV);
if(!tmp) break;
buf[tmp] = 0; /* terminate buf */
D_PRINTF(buf);
if(!list_modify(buf,status,pid)) {
LOG(MSG_ERR_MODIFY);
status = 0;
}
do_result(nsock,&status);
break;
/********************** SPECIAL ACTIONS *******************/
case CMD_REBOOT:
sig_reboot(SIGHUP);
break;
case CMD_POWEROFF:
sig_reboot(SIGTERM);
break;
case CMD_HALT:
sig_reboot(SIGUSR1);
break;
case CMD_RESCUE:
sig_reboot(SIGUSR2);
break;
case CMD_UPDATE:
sig_reboot(SIGCONT);
break;
default:
LOG(MSG_CMD_UNKNOWN);
break;
}
close(nsock);
}
if( errno != EAGAIN ) { /* report, but don't panic */
perror(MSG_ERR_ACCEPT);
}
D_PRINTF("ENDE");
}