runuser: add 'drop' as an alias for runuser

The 'drop' alias for 'runuser' relaxes a number of constraints
that were introduced for compatibility:

- It works even if the current process doesn't have elevated
  privileges.

- It isn't necessary to specify the name of the user.

- Any command can be invoked, not just the BusyBox shell.

- If the command doesn't specify a path 'drop' will first look for
  a BusyBox applet then search PATH.

Adds 320-336 when built along with runuser.

(GitHub issue #240)

2 files changed, 2 insertions, 2 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 0a1af6b72..fd670ebf6 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -1136,7 +1136,7 @@ char *get_user_name(void)
         return user_name;
 }
 
-#if ENABLE_RUNUSER
+#if ENABLE_RUNUSER || ENABLE_DROP
 /*
  * When runuser drops privileges TokenIsElevated still returns TRUE.
  * Use other means to determine if we're actually unprivileged.
diff --git a/win32/process.c b/win32/process.c
index a0678f50d..7db7741fd 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -204,7 +204,7 @@ quote_arg(const char *arg)
         return q;
 }
 
-static char *
+char *
 find_first_executable(const char *name)
 {
         char *tmp, *path = getenv("PATH");