libbb: GETOPT_RESET macro

Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 26 deletions

diff --git a/libbb/vfork_daemon_rexec.c b/libbb/vfork_daemon_rexec.c
index 2e7dc2d9b..fd481bf6e 100644
--- a/libbb/vfork_daemon_rexec.c
+++ b/libbb/vfork_daemon_rexec.c
@@ -121,28 +121,8 @@ int FAST_FUNC run_nofork_applet(int applet_no, char **argv)
 
 	/* In case getopt() or getopt32() was already called:
 	 * reset the libc getopt() function, which keeps internal state.
-	 *
-	 * BSD-derived getopt() functions require that optind be set to 1 in
-	 * order to reset getopt() state.  This used to be generally accepted
-	 * way of resetting getopt().  However, glibc's getopt()
-	 * has additional getopt() state beyond optind, and requires that
-	 * optind be set to zero to reset its state.  So the unfortunate state of
-	 * affairs is that BSD-derived versions of getopt() misbehave if
-	 * optind is set to 0 in order to reset getopt(), and glibc's getopt()
-	 * will core dump if optind is set 1 in order to reset getopt().
-	 *
-	 * More modern versions of BSD require that optreset be set to 1 in
-	 * order to reset getopt().  Sigh.  Standards, anyone?
 	 */
-#ifdef __GLIBC__
-	optind = 0;
-#else /* BSD style */
-	optind = 1;
-	/* optreset = 1; */
-#endif
-	/* optarg = NULL; opterr = 1; optopt = 63; - do we need this too? */
-	/* (values above are what they initialized to in glibc and uclibc) */
-	/* option_mask32 = 0; - not needed, no applet depends on it being 0 */
+	GETOPT_RESET();
 
 	argc = 1;
 	while (argv[argc])
@@ -167,11 +147,7 @@ int FAST_FUNC run_nofork_applet(int applet_no, char **argv)
 	restore_nofork_data(&old);
 
 	/* Other globals can be simply reset to defaults */
-#ifdef __GLIBC__
-	optind = 0;
-#else /* BSD style */
-	optind = 1;
-#endif
+	GETOPT_RESET();
 
 	return rc & 0xff; /* don't confuse people with "exitcodes" >255 */
 }