From 5bfcb4d5ae716befe06a1f8801551ae09a144e91 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Mon, 23 Jul 2007 17:40:35 +0000 Subject: getopt32 must remain NOFORK-safe (no mallocs!). Using alloca and pretending stack is infinite. Unfortunately, +79 bytes. --- libbb/getopt32.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'libbb/getopt32.c') diff --git a/libbb/getopt32.c b/libbb/getopt32.c index e5d97e98c..25eb113df 100644 --- a/libbb/getopt32.c +++ b/libbb/getopt32.c @@ -307,7 +307,7 @@ getopt32(int argc, char **argv, const char *applet_opts, ...) va_list p; #if ENABLE_GETOPT_LONG const struct option *l_o; - struct option *long_options = NULL; + struct option *long_options = (struct option *) &bb_null_long_options; #endif unsigned trigger; char **pargv = NULL; @@ -350,11 +350,11 @@ getopt32(int argc, char **argv, const char *applet_opts, ...) count = 1; optstr = applet_long_options; while (optstr[0]) { - optstr += strlen(optstr) + 3; /* skip \0, has_arg, val */ + optstr += strlen(optstr) + 3; /* skip NUL, has_arg, val */ count++; } /* count == no. of longopts + 1 */ - long_options = xzalloc(count * sizeof(*long_options)); + long_options = alloca(count * sizeof(*long_options)); i = 0; optstr = applet_long_options; while (--count) { @@ -476,7 +476,7 @@ getopt32(int argc, char **argv, const char *applet_opts, ...) * (supposed to act as --header, but doesn't) */ #if ENABLE_GETOPT_LONG while ((c = getopt_long(argc, argv, applet_opts, - long_options ? long_options : bb_null_long_options, NULL)) != -1) { + long_options, NULL)) != -1) { #else while ((c = getopt(argc, argv, applet_opts)) != -1) { #endif @@ -535,9 +535,6 @@ getopt32(int argc, char **argv, const char *applet_opts, ...) if (argc < min_arg || (max_arg >= 0 && argc > max_arg)) bb_show_usage(); -#if ENABLE_GETOPT_LONG - free(long_options); -#endif option_mask32 = flags; return flags; } -- cgit v1.2.3