commands/simple/chroot.c

   1
   2 #include <unistd.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 #include <sys/wait.h>
   7
   8 int
   9 main(int argc, char *argv[])
  10 {
  11         int status;
  12
  13         if(argc != 3) {
  14                 fprintf(stderr, "usage: %s <root> <command>\n", argv[0]);
  15                 return 1;
  16         }
  17
  18         if(chroot(argv[1]) < 0) {
  19                 perror("chroot");
  20                 return 1;
  21         }
  22
  23         status = system(argv[2]);
  24         if(WIFEXITED(status))
  25                 return WEXITSTATUS(status);
  26         return 1;
  27 }
  28