import cinit from unix.schottelius.org

Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>

software/cinit/browse_source/cinit-0.0.4/serv/cinit.c

@@ -0,0 +1,145 @@
+/* 
+ * (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
+ * cinit.c
+ * part of cLinux/cinit
+ */
+
+/* *stat() */
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* open */
+#include <fcntl.h>
+
+/* siggnal */
+#include <signal.h>
+
+/* PATH_MAX */
+#include <limits.h>
+
+/* printf() */
+//#include <stdio.h>
+
+/* str* */
+#include <string.h>
+
+/* sockets */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+/* mount */
+#include <sys/mount.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+
+#include <time.h>    /* nanosleep */
+
+#include "cinit.h"
+
+/* global variable */
+struct listitem *list;
+int sock, logfd;
+
+/***********************************************************************
+ * the main procedure
+ */
+
+time_t start;
+
+int main()
+{
+   struct stat sbuf;
+   unsigned long tmp;
+   pid_t pid;
+   struct sockaddr_un addr;
+   struct timespec ts;
+   
+   start = time(NULL);
+
+   set_signals(ACT_SERV);  /* set signal handlers */
+   logfd = 1;              /* write to stdout */
+   list = NULL;            /* list of services is empty currently */
+
+   /* stat, checkdir */
+   if( stat(CINIT_INIT,&sbuf) ) {
+      perror("PANIC ACTION");
+      panic();
+   }
+   if( ! S_ISDIR(sbuf.st_mode) ) {
+      LOG("PANIC ACTION: init is not a dir");
+      panic();
+   }
+   if( chdir(CINIT_INIT) == -1) {
+      perror("PANIC ACTION");
+      panic();
+   }
+
+   /* count of started processes */
+   // svc_list.process = 0; 
+
+   /******************** TMPDIR  **********************/
+   tmp = 0;
+   if(mount(C_TMPMOUNT,CINIT_TMNT,C_TMPFS,tmp,NULL) == -1) {
+      perror("mount");
+      panic();
+    }
+
+   /******************** begin socket **********************/
+   sock = socket(AF_UNIX,SOCK_STREAM,0); /* create socket */
+   if( sock == -1 ) {
+      perror("socket");
+      panic();
+   }
+   
+   /* tell the socket, _we_ want to get SIGIO! */
+   pid = getpid();
+   if(fcntl(sock,F_SETOWN,pid) == -1) {
+      perror("fcntl");
+      panic();
+   }
+
+   /* O_SYNC: SIGIO will be called, O_NONBLOCK: don't block cinit */
+   if ( fcntl(sock,F_SETFL,O_ASYNC|O_NONBLOCK) == -1) {
+      perror("fcntl");
+      panic();
+   }
+   
+   tmp = 1;
+   if(setsockopt(sock, SOL_SOCKET, SO_PASSCRED, &tmp, sizeof(tmp)) == -1) {
+      perror("passcred");
+      LOG("Does your OS not support SO_PASSCRED (man 7 socket)?");
+      panic();
+   }
+
+   memset(&addr,0,sizeof(addr)); /* clear addr */
+   strcpy(addr.sun_path, CINIT_SOCK);
+   addr.sun_family   = AF_UNIX;
+   tmp = sizeof(addr);
+
+   if(bind(sock,(struct sockaddr *)&addr,tmp) == -1) {
+      perror("bind");
+      panic();
+   }
+   
+   /* start listening */
+   if(listen(sock,SOCK_QUEUE) == -1) {
+      perror("listen");
+      panic();
+   }
+   /******************** end socket **********************/
+
+   /* initial run, only if we are 'real' init' */
+//   if( pid == 1) {
+      run_init_svc();
+//   }
+
+   D_PRINTF("fertig gestartet");
+   
+   ts.tv_sec = (1 << ( (sizeof(ts.tv_sec)* 8) -1 )) -1;
+   /* the main loop: sleep until a signal comes in */
+   while(1) {
+      nanosleep(&ts,NULL);
+   }
+}