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-rw-r--r--toys/Config.in8
-rw-r--r--toys/chroot.c14
-rw-r--r--toys/toylist.h1
3 files changed, 23 insertions, 0 deletions
diff --git a/toys/Config.in b/toys/Config.in
index a53c11f1..ba2bbf32 100644
--- a/toys/Config.in
+++ b/toys/Config.in
@@ -40,6 +40,14 @@ config CATV
-t Show tabs as ^I
-v Don't use ^x or M-x escapes.
+config CHROOT
+ bool "chroot"
+ default y
+ help
+ usage: chroot NEWPATH [commandline...]
+
+ Run command within a new root directory. If no command, run /bin/sh.
+
config COUNT
bool "count"
default y
diff --git a/toys/chroot.c b/toys/chroot.c
new file mode 100644
index 00000000..0126d968
--- /dev/null
+++ b/toys/chroot.c
@@ -0,0 +1,14 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * chroot.c - Run command in new root directory.
+ */
+
+#include "toys.h"
+
+void chroot_main(void)
+{
+ char *binsh[] = {"/bin/sh", 0};
+ if (chdir(*toys.optargs) || chroot("."))
+ perror_exit("%s", *toys.optargs);
+ xexec(toys.optargs[1] ? toys.optargs+1 : binsh);
+}
diff --git a/toys/toylist.h b/toys/toylist.h
index 360efa8a..f24266bb 100644
--- a/toys/toylist.h
+++ b/toys/toylist.h
@@ -119,6 +119,7 @@ NEWTOY(toybox, NULL, 0)
USE_BASENAME(NEWTOY(basename, "<1>2", TOYFLAG_BIN))
USE_BZCAT(NEWTOY(bzcat, "", TOYFLAG_USR|TOYFLAG_BIN))
USE_CATV(NEWTOY(catv, "vte", TOYFLAG_USR|TOYFLAG_BIN))
+USE_CHROOT(NEWTOY(chroot, "<1", TOYFLAG_USR|TOYFLAG_SBIN))
USE_COUNT(NEWTOY(count, "", TOYFLAG_USR|TOYFLAG_BIN))
USE_TOYSH(NEWTOY(cd, NULL, TOYFLAG_NOFORK))
USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN))