mount/pivot_root.c

   1 /* pivot_root.c - Change the root file system */
   2
   3 /* Written 2000 by Werner Almesberger */
   4
   5
   6 #include <stdio.h>
   7 #include <linux/unistd.h>
   8
   9 static
  10 _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
  11
  12
  13 int main(int argc,const char **argv)
  14 {
  15     if (argc != 3) {
  16         fprintf(stderr,"usage: %s new_root put_old\n",argv[0]);
  17         return 1;
  18     }
  19     if (pivot_root(argv[1],argv[2]) < 0) {
  20         perror("pivot_root");
  21         return 1;
  22     }
  23     return 0;
  24 }