new shutdown style

[unix-history] / usr / src / old / init / init.c

diff --git a/usr/src/old/init/init.c b/usr/src/old/init/init.c
index 589979e..e7e2b37 100644 (file)
--- a/usr/src/old/init/init.c
+++ b/usr/src/old/init/init.c
@@ -1,9 +1,10 @@
-static char *sccsid = "@(#)init.c      4.3 (Berkeley) %G%";
+static char *sccsid = "@(#)init.c      4.4 (Berkeley) %G%";

 #include <signal.h>
 #include <sys/types.h>
 #include <utmp.h>
 #include <setjmp.h>
 #include <sys/reboot.h>
 #include <signal.h>
 #include <sys/types.h>
 #include <utmp.h>
 #include <setjmp.h>
 #include <sys/reboot.h>

+#include <errno.h>

 
 #define        LINSIZ  sizeof(wtmp.ut_line)
 #define        TABSIZ  100
 
 #define        LINSIZ  sizeof(wtmp.ut_line)
 #define        TABSIZ  100


@@ -41,8 +42,10 @@ int  fi;
 int    mergflag;
 char   tty[20];
 jmp_buf        sjbuf, shutpass;
 int    mergflag;
 char   tty[20];
 jmp_buf        sjbuf, shutpass;

+time_t time0;

 
 int    reset();
 
 int    reset();

+int    idle();

 char   *strcpy(), *strcat();
 long   lseek();
 
 char   *strcpy(), *strcat();
 long   lseek();
 


@@ -51,11 +54,12 @@ main()
        register int r11;               /* passed thru from boot */
        int howto, oldhowto;
 
        register int r11;               /* passed thru from boot */
        int howto, oldhowto;
 

+       time0 = time(0);

        howto = r11;
        setjmp(sjbuf);
        signal(SIGTERM, reset);
        howto = r11;
        setjmp(sjbuf);
        signal(SIGTERM, reset);

+       signal(SIGTSTP, idle);

        signal(SIGSTOP, SIG_IGN);
        signal(SIGSTOP, SIG_IGN);

-       signal(SIGTSTP, SIG_IGN);

        signal(SIGTTIN, SIG_IGN);
        signal(SIGTTOU, SIG_IGN);
        for(EVER) {
        signal(SIGTTIN, SIG_IGN);
        signal(SIGTTOU, SIG_IGN);
        for(EVER) {


@@ -114,17 +118,31 @@ shutreset()
 
 shutend()
 {
 
 shutend()
 {

-       register i;
+       register i, f;

 
 

+       acct(0);

        signal(SIGALRM, SIG_DFL);
        for(i=0; i<10; i++)
                close(i);
        signal(SIGALRM, SIG_DFL);
        for(i=0; i<10; i++)
                close(i);

+       f = open(wtmpf, 1);
+       if (f >= 0) {
+               lseek(f, 0L, 2);
+               SCPYN(wtmp.ut_line, "~");
+               SCPYN(wtmp.ut_name, "shutdown");
+               time(&wtmp.ut_time);
+               write(f, (char *)&wtmp, sizeof(wtmp));
+               close(f);
+       }
+       return(1);

 }
 
 single()
 {
        register pid;
 }
 
 single()
 {
        register pid;

+       register xpid;
+       extern  errno;

 
 

+   do {

        pid = fork();
        if(pid == 0) {
 /*
        pid = fork();
        if(pid == 0) {
 /*


@@ -139,8 +157,10 @@ single()
                execl(shell, minus, (char *)0);
                exit(0);
        }
                execl(shell, minus, (char *)0);
                exit(0);
        }

-       while(wait((int *)0) != pid)
-               ;
+       while((xpid = wait((int *)0)) != pid)
+               if (xpid == -1 && errno == ECHILD)
+                       break;
+   } while (xpid == -1);

 }
 
 runcom(oldhowto)
 }
 
 runcom(oldhowto)


@@ -169,7 +189,11 @@ runcom(oldhowto)
                lseek(f, 0L, 2);
                SCPYN(wtmp.ut_line, "~");
                SCPYN(wtmp.ut_name, "reboot");
                lseek(f, 0L, 2);
                SCPYN(wtmp.ut_line, "~");
                SCPYN(wtmp.ut_name, "reboot");

-               time(&wtmp.ut_time);
+               if (time0) {
+                       wtmp.ut_time = time0;
+                       time0 = 0;
+               } else
+                       time(&wtmp.ut_time);

                write(f, (char *)&wtmp, sizeof(wtmp));
                close(f);
        }
                write(f, (char *)&wtmp, sizeof(wtmp));
                close(f);
        }


@@ -371,3 +395,25 @@ reset()
 {
        longjmp(sjbuf, 1);
 }
 {
        longjmp(sjbuf, 1);
 }

+
+idle()
+{
+       register struct tab *p;
+       register pid;
+
+       signal(SIGTSTP, idle);
+       for (;;) {
+               pid = wait((int *) 0);
+               if (mergflag)
+                       return;
+               if (pid == -1)
+                       pause();
+               else {
+                       for (ALL)
+                               if (p->pid == pid) {
+                                       rmut(p);
+                                       p->pid = -1;
+                               }
+               }
+       }
+}