source: trunk/minix/commands/simple/newroot.c@ 15

/*
newroot.c

Replace the current root with a new one
*/

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
        int r;
        char *dev;

        if (argc != 2)
        {
                fprintf(stderr, "Usage: newroot <block-special>\n");
                exit(1);
        }
        dev= argv[1];
        r= mount(dev, "/", 0 /* !ro */);
        if (r != 0)
        {
                fprintf(stderr, "newroot: mount failed: %s\n", strerror(errno));
                exit(1);
        }
        return 0;
}