aboutsummaryrefslogtreecommitdiff
path: root/posix
diff options
context:
space:
mode:
Diffstat (limited to 'posix')
-rw-r--r--posix/getopt.c49
-rw-r--r--posix/getopt.h69
-rw-r--r--posix/getopt1.c17
-rw-r--r--posix/getopt_int.h8
4 files changed, 78 insertions, 65 deletions
diff --git a/posix/getopt.c b/posix/getopt.c
index 248fe5b03a..f54bc2d1cf 100644
--- a/posix/getopt.c
+++ b/posix/getopt.c
@@ -182,7 +182,7 @@ exchange (char **argv, struct _getopt_data *d)
/* Initialize the internal data when the first call is made. */
static const char *
-_getopt_initialize (int argc, char *const *argv, const char *optstring,
+_getopt_initialize (int argc, char **argv, const char *optstring,
struct _getopt_data *d, int posixly_correct)
{
/* Start processing options with ARGV-element 1 (since ARGV-element 0
@@ -272,7 +272,7 @@ _getopt_initialize (int argc, char *const *argv, const char *optstring,
long-named options. */
int
-_getopt_internal_r (int argc, char *const *argv, const char *optstring,
+_getopt_internal_r (int argc, char **argv, const char *optstring,
const struct option *longopts, int *longind,
int long_only, struct _getopt_data *d, int posixly_correct)
{
@@ -317,7 +317,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring,
if (d->__first_nonopt != d->__last_nonopt
&& d->__last_nonopt != d->optind)
- exchange ((char **) argv, d);
+ exchange (argv, d);
else if (d->__last_nonopt != d->optind)
d->__first_nonopt = d->optind;
@@ -340,7 +340,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring,
if (d->__first_nonopt != d->__last_nonopt
&& d->__last_nonopt != d->optind)
- exchange ((char **) argv, d);
+ exchange (argv, d);
else if (d->__first_nonopt == d->__last_nonopt)
d->__first_nonopt = d->optind;
d->__last_nonopt = argc;
@@ -766,7 +766,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring,
}
int
-_getopt_internal (int argc, char *const *argv, const char *optstring,
+_getopt_internal (int argc, char **argv, const char *optstring,
const struct option *longopts, int *longind, int long_only,
int posixly_correct)
{
@@ -786,32 +786,23 @@ _getopt_internal (int argc, char *const *argv, const char *optstring,
return result;
}
-/* glibc gets a LSB-compliant getopt.
- Standalone applications get a POSIX-compliant getopt. */
-#if _LIBC
-enum { POSIXLY_CORRECT = 0 };
-#else
-enum { POSIXLY_CORRECT = 1 };
-#endif
-
-int
-getopt (int argc, char *const *argv, const char *optstring)
-{
- return _getopt_internal (argc, argv, optstring,
- (const struct option *) 0,
- (int *) 0,
- 0, POSIXLY_CORRECT);
-}
+/* glibc gets a LSB-compliant getopt and a POSIX-complaint __posix_getopt.
+ Standalone applications just get a POSIX-compliant getopt.
+ POSIX and LSB both require these functions to take 'char *const *argv'
+ even though this is incorrect (because of the permutation). */
+#define GETOPT_ENTRY(NAME, POSIXLY_CORRECT) \
+ int \
+ NAME (int argc, char *const *argv, const char *optstring) \
+ { \
+ return _getopt_internal (argc, (char **)argv, optstring, \
+ 0, 0, 0, POSIXLY_CORRECT); \
+ }
#ifdef _LIBC
-int
-__posix_getopt (int argc, char *const *argv, const char *optstring)
-{
- return _getopt_internal (argc, argv, optstring,
- (const struct option *) 0,
- (int *) 0,
- 0, 1);
-}
+GETOPT_ENTRY(getopt, 0)
+GETOPT_ENTRY(__posix_getopt, 1)
+#else
+GETOPT_ENTRY(getopt, 1)
#endif
diff --git a/posix/getopt.h b/posix/getopt.h
index c83a186beb..fa6aa6be38 100644
--- a/posix/getopt.h
+++ b/posix/getopt.h
@@ -33,10 +33,11 @@
# include <ctype.h>
#endif
+#ifndef __GNUC_PREREQ
+# define __GNUC_PREREQ(maj, min) (0)
+#endif
+
#ifndef __THROW
-# ifndef __GNUC_PREREQ
-# define __GNUC_PREREQ(maj, min) (0)
-# endif
# if defined __cplusplus && __GNUC_PREREQ (2,8)
# define __THROW throw ()
# else
@@ -44,6 +45,14 @@
# endif
#endif
+#ifndef __nonnull
+# if __GNUC_PREREQ (3, 3)
+# define __nonnull(params) __attribute__ ((__nonnull__ params))
+# else
+# define __nonnull(params)
+# endif
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -139,45 +148,55 @@ struct option
scanning, explicitly telling 'getopt' that there are no more
options.
- If OPTS begins with '--', then non-option arguments are treated as
- arguments to the option '\0'. This behavior is specific to the GNU
- 'getopt'. */
+ If OPTS begins with '-', then non-option arguments are treated as
+ arguments to the option '\1'. This behavior is specific to the GNU
+ 'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in
+ the environment, then do not permute arguments.
+
+ For standards compliance, the 'argv' argument has the type
+ char *const *, but this is inaccurate; if argument permutation is
+ enabled, the argv array (not the strings it points to) must be
+ writable. */
-#ifdef __GNU_LIBRARY__
-/* Many other libraries have conflicting prototypes for getopt, with
- differences in the consts, in stdlib.h. To avoid compilation
- errors, only prototype getopt for the GNU C library. */
extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
- __THROW;
+ __THROW __nonnull ((2, 3));
-# if defined __need_getopt && defined __USE_POSIX2 \
- && !defined __USE_POSIX_IMPLICITLY && !defined __USE_GNU
+#if defined __need_getopt && defined __USE_POSIX2 \
+ && !defined __USE_POSIX_IMPLICITLY && !defined __USE_GNU
/* The GNU getopt has more functionality than the standard version. The
additional functionality can be disable at runtime. This redirection
helps to also do this at runtime. */
-# ifdef __REDIRECT
+# ifdef __REDIRECT
extern int __REDIRECT_NTH (getopt, (int ___argc, char *const *___argv,
const char *__shortopts),
__posix_getopt);
-# else
+# else
extern int __posix_getopt (int ___argc, char *const *___argv,
- const char *__shortopts) __THROW;
-# define getopt __posix_getopt
-# endif
+ const char *__shortopts)
+ __THROW __nonnull ((2, 3));
+# define getopt __posix_getopt
# endif
-#else /* not __GNU_LIBRARY__ */
-extern int getopt ();
-#endif /* __GNU_LIBRARY__ */
+#endif
#ifndef __need_getopt
-extern int getopt_long (int ___argc, char *const *___argv,
+
+/* The type of the 'argv' argument to getopt_long and getopt_long_only
+ is properly 'char **', since both functions may write to the array
+ (in order to move all the options to the beginning). However, for
+ compatibility with old versions of LSB, glibc has to use 'char *const *'
+ instead. */
+#ifndef __getopt_argv_const
+# define __getopt_argv_const const
+#endif
+
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
- __THROW;
-extern int getopt_long_only (int ___argc, char *const *___argv,
+ __THROW __nonnull ((2, 3));
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
- __THROW;
+ __THROW __nonnull ((2, 3));
#endif
diff --git a/posix/getopt1.c b/posix/getopt1.c
index b4ae6e48f2..b967d24f57 100644
--- a/posix/getopt1.c
+++ b/posix/getopt1.c
@@ -24,14 +24,15 @@
#include "getopt_int.h"
int
-getopt_long (int argc, char *const *argv, const char *options,
+getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
const struct option *long_options, int *opt_index)
{
- return _getopt_internal (argc, argv, options, long_options, opt_index, 0, 0);
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 0, 0);
}
int
-_getopt_long_r (int argc, char *const *argv, const char *options,
+_getopt_long_r (int argc, char **argv, const char *options,
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
{
@@ -45,14 +46,16 @@ _getopt_long_r (int argc, char *const *argv, const char *options,
instead. */
int
-getopt_long_only (int argc, char *const *argv, const char *options,
+getopt_long_only (int argc, char *__getopt_argv_const *argv,
+ const char *options,
const struct option *long_options, int *opt_index)
{
- return _getopt_internal (argc, argv, options, long_options, opt_index, 1, 0);
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 1, 0);
}
int
-_getopt_long_only_r (int argc, char *const *argv, const char *options,
+_getopt_long_only_r (int argc, char **argv, const char *options,
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
{
@@ -76,7 +79,7 @@ main (int argc, char **argv)
{
int this_option_optind = optind ? optind : 1;
int option_index = 0;
- static struct option long_options[] =
+ static const struct option long_options[] =
{
{"add", 1, 0, 0},
{"append", 0, 0, 0},
diff --git a/posix/getopt_int.h b/posix/getopt_int.h
index 9ac03bdaaf..762679a305 100644
--- a/posix/getopt_int.h
+++ b/posix/getopt_int.h
@@ -21,7 +21,7 @@
#include <getopt.h>
-extern int _getopt_internal (int ___argc, char *const *___argv,
+extern int _getopt_internal (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, int __posixly_correct);
@@ -101,18 +101,18 @@ struct _getopt_data
default values and to clear the initialization flag. */
#define _GETOPT_DATA_INITIALIZER { 1, 1 }
-extern int _getopt_internal_r (int ___argc, char *const *___argv,
+extern int _getopt_internal_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, struct _getopt_data *__data,
int __posixly_correct);
-extern int _getopt_long_r (int ___argc, char *const *___argv,
+extern int _getopt_long_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
struct _getopt_data *__data);
-extern int _getopt_long_only_r (int ___argc, char *const *___argv,
+extern int _getopt_long_only_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts,
int *__longind,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 11:15:38 +0000