mirror of
https://github.com/freebsd/freebsd-src
synced 2024-11-05 18:22:52 +00:00
b4314abf31
to resurrect my changes for the last snapshot, which were unfortunately lost in a forest fire on time.
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* $Id: exec.c,v 1.8.2.1 1994/11/21 03:11:59 phk Exp $
|
|
*
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <dialog.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/reboot.h>
|
|
|
|
#include "sysinstall.h"
|
|
|
|
int
|
|
exec(int magic, char *cmd, char *args, ...)
|
|
{
|
|
int pid, w, status;
|
|
char *argv[EXEC_MAXARG];
|
|
int arg = 0;
|
|
va_list ap;
|
|
struct stat dummy;
|
|
|
|
if (stat(cmd, &dummy) == -1) {
|
|
Fatal("Executable %s does not exist", cmd);
|
|
}
|
|
|
|
va_start(ap, args);
|
|
argv[arg++] = (char *)args;
|
|
do {
|
|
if (arg >= EXEC_MAXARG)
|
|
Fatal("Too many arguments");
|
|
} while ((argv[arg++] = va_arg(ap, char *)));
|
|
va_end(ap);
|
|
|
|
if ((pid = fork()) == 0) {
|
|
switch (magic) {
|
|
case 0:
|
|
close(0); dup(debug_fd);
|
|
close(1); dup(debug_fd);
|
|
close(2); dup(debug_fd);
|
|
close(debug_fd);
|
|
break;
|
|
case 1:
|
|
close(2); dup(debug_fd);
|
|
close(debug_fd);
|
|
break;
|
|
case 2:
|
|
case 3:
|
|
close(debug_fd);
|
|
break;
|
|
case 4:
|
|
close(0) ; open("/stand/sysinstall",O_RDONLY);
|
|
close(1) ; open("/mnt/stand/sysinstall",
|
|
O_WRONLY|O_CREAT|O_TRUNC,0755);
|
|
default:
|
|
break;
|
|
}
|
|
execv(cmd, argv);
|
|
exit(1);
|
|
}
|
|
|
|
while ((w = wait(&status)) != pid && w != -1)
|
|
;
|
|
if ((status >> 8) == 20 && magic == 3) /* special case for bininst */
|
|
reboot(RB_AUTOBOOT);
|
|
if (w == -1)
|
|
Fatal("Child process %s terminated abnormally\n", cmd);
|
|
return(status);
|
|
}
|