[dev] [PATCH] sbase: add chroot

[Strake]

diff -r 8cf300476909 chroot.8
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/chroot.8  Wed Aug 01 04:46:43 2012 -0500
@@ -0,0 +1,25 @@
+.TH CHROOT 8
+.SH NAME
+chroot \- change root directory
+.SH SYNOPSIS
+.B chroot
+.I path
+[
+.I x
+[
+.I argument ...
+]
+]
+.SH OPERATION
+.B chroot
+changes the root directory to
+.I path
+and starts
+.I x
+with
+.I arguments
+, or
+.B $SHELL -i
+if no
+.I x
+given.
diff -r 8cf300476909 chroot.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/chroot.c  Wed Aug 01 04:46:43 2012 -0500
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "util.h"
+
+int main (int argc, char *argu[]) {
+       if (argc < 2) {
+               fputs ("No new root path given\n", stderr);
+               exit (1);
+       }
+       if (chroot (argu[1])) eprintf ("chroot:");
+       if (argc == 2) {
+               char *x;
+               x = getenv ("SHELL");
+               if (!x) {
+                       fputs ("chroot: SHELL not set\n", stderr);
+                       return 1;
+               }
+               if (execl (x, x, "-i", (char *)0) < 0) eprintf ("chroot: %s:", 
x);
+       }
+       else if (execv (argu[2], argu + 2) < 0) eprintf ("chroot: %s:", 
argu[2]);
+}