import cinit from unix.schottelius.org

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

software/cinit/browse_source/cinit-0.2.1/serv/cinit.c

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