sbase/chroot.c

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#include <stdlib.h>
#include <unistd.h>
#include "util.h"
static void usage(void);
int
main(int argc, char **argv)
{
char *shell[] = {"/bin/sh", "-i", NULL};
if(getenv("SHELL"))
shell[0] = getenv("SHELL");
if(argc < 2)
usage();
if(chroot(argv[1]) == -1)
eprintf("chroot: '%s':", argv[1]);
if(chdir("/") == -1)
eprintf("chroot:");
if(argc == 2) {
execvp(*shell, shell);
} else {
execvp(argv[2], argv+2);
}
eprintf("chroot: '%s':", argv[2]);
return 1;
}
void
usage(void)
{
eprintf("usage: chroot dir [command [arg...]]\n");
}