extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC;
+/* 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 (specifically, glibc
+ * extensions ('+' and '-' at the start of the string), and requires
+ * that optind be set to zero to reset its state. BSD-derived versions
+ * of getopt() misbehaved if optind is set to 0 in order to reset getopt(),
+ * and glibc's getopt() used to coredump if optind is set 1 in order
+ * to reset getopt().
+ * Then BSD introduced additional variable "optreset" which
+ * be set to 1 in order to reset getopt(). Sigh. Standards, anyone?
+ *
+ * By ~2008, OpenBSD 3.4 was changed to survive glibc-like optind = 0
+ * (to interpret it as if optreset was set).
+ */
+#ifdef __GLIBC__
+#define GETOPT_RESET() (optind = 0)
+#else /* BSD style */
+#define GETOPT_RESET() (optind = 1)
+#endif
+
+
/* Having next pointer as a first member allows easy creation
* of "llist-compatible" structs, and using llist_FOO functions
* on them.
* run_nofork_applet() does this, but we might end up here
* also via gunzip_main() -> gzip_main(). Play safe.
*/
-#ifdef __GLIBC__
- optind = 0;
-#else /* BSD style */
- optind = 1;
- /* optreset = 1; */
-#endif
- /* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */
+ GETOPT_RESET();
/* Note: just "getopt() <= 0" will not work well for
* "fake" short options, like this one:
/* 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])
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 */
}
/* getopt32() was already called:
* reset the libc getopt() function, which keeps internal state.
*/
-#ifdef __GLIBC__
- optind = 0;
-#else /* BSD style */
- optind = 1;
- /* optreset = 1; */
-#endif
+ GETOPT_RESET();
do {
if (opts & 1) {
/* In case getopt was already called:
* reset the libc getopt() function, which keeps internal state.
*/
-#ifdef __GLIBC__
- optind = 0;
-#else /* BSD style */
- optind = 1;
- /* optreset = 1; */
-#endif
- /* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */
+ GETOPT_RESET();
argc = 1;
while (argv[argc])
/* We used it already in main() in getopt32(),
* we *must* reset getopt(3): */
-#ifdef __GLIBC__
- optind = 0;
-#else /* BSD style */
- optind = 1;
- /* optreset = 1; */
-#endif
+ GETOPT_RESET();
while (1) {
#if ENABLE_FEATURE_GETOPT_LONG