hush: GETOPT_RESET() _after_ getopts too.

NOEXEC'ed applets which use getopt() need this.

function                                             old     new   delta
builtin_getopts                                      403     413     +10

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

include/libbb.h

@@ -1212,7 +1212,7 @@ uint32_t getopt32long(char **argv, const char *optstring, const char *longopts,
  * By ~2008, OpenBSD 3.4 was changed to survive glibc-like optind = 0
  * (to interpret it as if optreset was set).
  */
-#ifdef __GLIBC__
+#if 1 /*def __GLIBC__*/
 #define GETOPT_RESET() (optind = 0)
 #else /* BSD style */
 #define GETOPT_RESET() (optind = 1)

libbb/getopt32.c

@@ -517,7 +517,7 @@ vgetopt32(char **argv, const char *applet_opts, const char *applet_long_options,
 	}
 
 	/* In case getopt32 was already called:
-	 * reset the libc getopt() function, which keeps internal state.
+	 * reset libc getopt() internal state.
 	 * run_nofork_applet() does this, but we might end up here
 	 * also via gunzip_main() -> gzip_main(). Play safe.
 	 */

shell/hush.c

@@ -9956,7 +9956,7 @@ Test that VAR is a valid variable name?
 	 * until we get Nth result (or failure).
 	 * (N == G.getopt_count is reset to 0 whenever OPTIND is [un]set).
 	 */
-	optind = 0; /* reset getopt() state */
+	GETOPT_RESET();
 	count = 0;
 	n = string_array_len(argv);
 	do {
@@ -9971,6 +9971,7 @@ Test that VAR is a valid variable name?
 	/* Set OPTIND. Prevent resetting of the magic counter! */
 	set_local_var_from_halves("OPTIND", utoa(optind));
 	G.getopt_count = count; /* "next time, give me N+1'th result" */
+	GETOPT_RESET(); /* just in case */
 
 	/* Set OPTARG */
 	/* Always set or unset, never left as-is, even on exit/error:

shell/shell_common.c

@@ -425,8 +425,8 @@ shell_builtin_ulimit(char **argv)
 	 * ulimit 123 -c2 -l 456
 	 */
 
-	/* In case getopt was already called:
-	 * reset the libc getopt() function, which keeps internal state.
+	/* In case getopt() was already called:
+	 * reset libc getopt() internal state.
 	 */
 	GETOPT_RESET();