diff options
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/appletlib.c | 1 | ||||
| -rw-r--r-- | libbb/getopt32.c | 27 | ||||
| -rw-r--r-- | libbb/vfork_daemon_rexec.c | 20 |
3 files changed, 23 insertions, 25 deletions
diff --git a/libbb/appletlib.c b/libbb/appletlib.c index 80adff5..993618e 100644 --- a/libbb/appletlib.c +++ b/libbb/appletlib.c @@ -638,7 +638,6 @@ void run_applet_no_and_exit(int applet_no, char **argv) argc++; /* Reinit some shared global data */ - optind = 1; xfunc_error_retval = EXIT_FAILURE; applet_name = APPLET_NAME(applet_no); diff --git a/libbb/getopt32.c b/libbb/getopt32.c index 2452eb0..80d5d28 100644 --- a/libbb/getopt32.c +++ b/libbb/getopt32.c @@ -473,11 +473,30 @@ getopt32(char **argv, const char *applet_opts, ...) } } - /* In case getopt32 was already called, reinit some state */ + /* In case 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; - /* optarg = NULL; opterr = 0; optopt = 0; ?? */ + /* optreset = 1; */ +#endif + /* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */ - /* Note: just "getopt() <= 0" will not work good for + /* Note: just "getopt() <= 0" will not work well for * "fake" short options, like this one: * wget $'-\203' "Test: test" http://kernel.org/ * (supposed to act as --header, but doesn't) */ @@ -487,7 +506,7 @@ getopt32(char **argv, const char *applet_opts, ...) #else while ((c = getopt(argc, argv, applet_opts)) != -1) { #endif - c &= 0xff; /* fight libc's sign extends */ + c &= 0xff; /* fight libc's sign extension */ loop_arg_is_opt: for (on_off = complementary; on_off->opt != c; on_off++) { /* c==0 if long opt have non NULL flag */ diff --git a/libbb/vfork_daemon_rexec.c b/libbb/vfork_daemon_rexec.c index 3a386c5..98339c9 100644 --- a/libbb/vfork_daemon_rexec.c +++ b/libbb/vfork_daemon_rexec.c @@ -137,26 +137,6 @@ int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char ** * die_sleep and longjmp here instead. */ die_sleep = -1; - /* Reset the libc getopt() function, which keeps internal state. - * - * BSD-derived getopt() functions require that optind be reset 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 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 ump 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 /* option_mask32 = 0; - not needed */ argc = 1; |