disable automatic selection of FEATURE_SUID; improve its help text

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

1 files changed, 12 insertions, 4 deletions

diff --git a/Config.in b/Config.in
index 140572e2d..1109b1016 100644
--- a/Config.in
+++ b/Config.in
@@ -328,10 +328,18 @@ config FEATURE_SUID
           symlinks pointing to each binary), and only set the suid bit on the
           one that needs it.
 
-          The applets currently marked to need the suid bit are:
-
-          crontab, dnsd, findfs, ipcrm, ipcs, login, passwd, ping, su,
-          traceroute, vlock.
+          The applets which require root rights (need suid bit or
+          to be run by root) and will refuse to execute otherwise:
+          crontab, login, passwd, su, vlock, wall.
+
+          The applets which will use root rights if they have them
+          (via suid bit, or because run by root), but would try to work
+          without root right nevertheless:
+          findfs, ping[6], traceroute[6], mount.
+
+          Note that if you DONT select this option, but DO make busybox
+          suid root, ALL applets will run under root, which is a huge
+          security hole (think "cp /some/file /etc/passwd").
 
 config FEATURE_SUID_CONFIG
         bool "Runtime SUID/SGID configuration via /etc/busybox.conf"