Introduce FEATURE_EXEC_PREFER_APPLETS = "re-execute our own

executable if we asked to exec someting with argv[0] == known_applet"
Use it in init. Also respect PATH in init, remove explicit "/sbin" etc
from exec. Patch by Gabriel L. Somlo <somlo@cmu.edu>

1 files changed, 9 insertions, 1 deletions

diff --git a/Config.in b/Config.in
index acdecccab..2066e42f9 100644
--- a/Config.in
+++ b/Config.in
@@ -231,6 +231,14 @@ config SELINUX
 
           Most people will leave this set to 'N'.
 
+config FEATURE_EXEC_PREFER_APPLETS
+        bool "exec prefers applets"
+        default n
+        help
+          This is an experimental option which directs applets about to
+          call 'exec' to try and find an applicable busybox applet before
+          searching the executable path for a binary or symlink to execute.
+
 config BUSYBOX_EXEC_PATH
         string "Path to BusyBox executable"
         default "/proc/self/exe"
@@ -439,7 +447,7 @@ config INSTALL_APPLET_HARDLINKS
 config INSTALL_APPLET_DONT
        bool
        prompt "not installed"
-       depends on FEATURE_INSTALLER || FEATURE_SH_STANDALONE_SHELL
+       depends on FEATURE_INSTALLER || FEATURE_SH_STANDALONE_SHELL || FEATURE_EXEC_PREFER_APPLETS
        help
          Do not install applet links. Useful when using the -install feature
          or a standalone shell for rescue pruposes.