136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
/*
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* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
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* cinit.c
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* part of cLinux/cinit
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*/
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/* *stat() */
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#include <sys/stat.h>
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#include <unistd.h>
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/* open */
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#include <fcntl.h>
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/* siggnal */
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#include <signal.h>
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/* PATH_MAX */
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#include <limits.h>
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/* str* */
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#include <string.h>
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/* sockets */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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/* mount */
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#include <sys/mount.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/poll.h> /* poll */
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#include "cinit.h"
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/* global variables */
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struct listitem *list;
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int sock;
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pid_t cpid;
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/***********************************************************************
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* the main procedure
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*/
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int main(int argc, char **argv)
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{
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struct sockaddr_un addr;
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struct pollfd plist;
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char *initdir;
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list = NULL; /* list of services is empty currently */
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initdir = CINIT_INIT; /* default init dir */
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cpid = getpid();
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if(cpid != 1) {
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usage(MSG_USAGE,MSG_NOT_ONE);
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}
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set_signals(ACT_SERV); /* set signal handlers */
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/* read args, profile support */
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while(argc > 1) {
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if( !strncmp(PROFILE, argv[argc-1], strlen(PROFILE)) ) {
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initdir = (char *) malloc(
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strlen(CINIT_DIR) +
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strlen(&argv[argc-1][strlen(PROFILE)]) + 2
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);
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if(initdir == NULL) {
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panic();
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}
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strcpy(initdir,CINIT_DIR);
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strcat(initdir,SLASH);
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strcat(initdir,&argv[argc-1][strlen(PROFILE)]);
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break;
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}
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argc--;
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}
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/* tell the world we are there FIXME: do we really need three calls? */
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mini_printf(MSG_CINIT,1); mini_printf(initdir,1); mini_printf("\n",1);
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if( chdir(CINIT_INIT) == -1) {
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perror(MSG_CHDIR);
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panic();
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}
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/******************** TMPDIR **********************/
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if( mount(C_TMPMOUNT,CINIT_TMNT,C_TMPFS,0,NULL) == -1 ) {
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perror(MSG_ERR_MOUNT);
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panic();
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}
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/******************** begin socket **********************/
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sock = socket(AF_UNIX,SOCK_STREAM,0); /* create socket */
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if( sock == -1 ) {
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perror(MSG_SOCKET);
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panic();
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}
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memset(&addr, 0, sizeof(addr) ); /* clear addr */
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strcpy(addr.sun_path, CINIT_SOCK);
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addr.sun_family = AF_UNIX;
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if(bind(sock,(struct sockaddr *)&addr,sizeof(addr)) == -1) {
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perror(MSG_BIND);
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panic();
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}
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/* start listening */
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if(listen(sock,SOCK_QUEUE) == -1) {
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perror(MSG_LISTEN);
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panic();
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}
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/* start init or profile */
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run_init_svc(initdir);
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/* free, if we malloc()ed before */
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if(initdir != CINIT_INIT) {
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free(initdir);
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}
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/* our life is polling a socket */
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plist.fd = sock;
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plist.events = POLLIN | POLLPRI;
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while(1) {
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if(poll(&plist, 1, -1) != -1) {
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if( (plist.revents & POLLIN) == POLLIN ||
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(plist.revents & POLLPRI) == POLLPRI) {
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sigio(sock);
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}
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}
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}
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}
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