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authorDenis Vlasenko2008-01-28 22:57:10 +0000
committerDenis Vlasenko2008-01-28 22:57:10 +0000
commit9772816570f0a63ac301f1885292b064e23f5310 (patch)
treea8e9c2947cd4dbc718989d508dfc742840a16e81 /libbb
parent73032ca04be49c096f745f0873d67d9c831642bd (diff)
downloadbusybox-9772816570f0a63ac301f1885292b064e23f5310.zip
busybox-9772816570f0a63ac301f1885292b064e23f5310.tar.gz
*: move getopt reset code to better place(s)
Diffstat (limited to 'libbb')
-rw-r--r--libbb/appletlib.c1
-rw-r--r--libbb/getopt32.c27
-rw-r--r--libbb/vfork_daemon_rexec.c20
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;