make 17 state-changing execing applets (ex: "nice PROG ARGS") noexec

The applets with "<applet> [opts] PROG ARGS" API very quickly exec
another program, noexec is okay for them:

 chpst/envdir/envuidgid/softlimit/setuidgid
 chroot
 chrt
 ionice
 nice
 nohup
 setarch/linux32/linux64
 taskset
 cttyhack

"reset" and "sulogin" applets don't have this form, but also exec
another program at once, thus made noexec too.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/coreutils/chroot.c b/coreutils/chroot.c
index 5645d72df..78751df84 100644
--- a/coreutils/chroot.c
+++ b/coreutils/chroot.c
@@ -13,7 +13,7 @@
 //config:       chroot is used to change the root directory and run a command.
 //config:       The default command is '/bin/sh'.
 
-//applet:IF_CHROOT(APPLET(chroot, BB_DIR_USR_SBIN, BB_SUID_DROP))
+//applet:IF_CHROOT(APPLET_NOEXEC(chroot, chroot, BB_DIR_USR_SBIN, BB_SUID_DROP, chroot))
 
 //kbuild:lib-$(CONFIG_CHROOT) += chroot.o
 
@@ -40,6 +40,7 @@ int chroot_main(int argc UNUSED_PARAM, char **argv)
         ++argv;
         if (!*argv)
                 bb_show_usage();
+
         xchroot(*argv);
 
         ++argv;