mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-30 06:21:07 +00:00
2ad4fab214
1998-04-08 20:06 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv_conf.c (__gconv_read_conf): Use __realpath not realpath. * iconv/gconv_db.c: Use __ protected regex functions. * iconv/gconv_simple.c: Use __mbsinit not mbsinit. * posix/getopt_init.c: Use __getpid not getpid. * posix/regex.c: Rename all global functions to start with __ and make old names weak aliases. * posix/regex.h: Adopt prototypes for this. * stdlib/canonicalize.c: Define __realpath, make canonicalize_file_name a weak alias and use __getcwd instead of getcwd. * stdlib/stdlib.h: Declare __realpath and __canonicalize_file_name. * stdlib/strtod.c: Use __btowc instead of btowc. * stdlib/strtol.c: Likewise. * sysdeps/libm-ieee754/s_matherr.c: Weaken definition of matherr. * sysdeps/unix/sysv/linux/errlist.c: Make sure definitions of sys_nerr and sys_errlist are weak. * wcsmbs/btowc.c: Define function as __btowc and make btowc weak alias. * wcsmbs/mbrtowc.c: Use __mbsinit not mbsinit. * wcsmbs/mbsnrtowcs.c: Likewise. * wcsmbs/mbsrtowcs.c: Likewise. * wcsmbs/wcsnrtombs.c: Likewise. * wcsmbs/wcsrtombs.c: Likewise. * wcsmbs/mbsinit.c: Define function as __mbsinit and make mbsinit weak alias. * wcsmbs/wchar.h: Declare __btowc and __mbsinit. * wctype/wctype.c: Define function as __wctype and make wctype weak alias. * wctype/wctype.h: Declare __wctype.
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/* Perform additional initialization for getopt functions in GNU libc.
|
|
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* Attention: this file is *not* necessary when the GNU getopt functions
|
|
are used outside the GNU libc. Some additional functionality of the
|
|
getopt functions in GNU libc require this additional work. */
|
|
|
|
#include <getopt.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <stdio-common/_itoa.h>
|
|
|
|
/* Variable to synchronize work. */
|
|
char *__getopt_nonoption_flags;
|
|
|
|
extern pid_t __libc_pid;
|
|
|
|
|
|
/* Remove the environment variable "_<PID>_GNU_nonoption_argv_flags_" if
|
|
it is still available. If the getopt functions are also used in the
|
|
application it does not exist anymore since it was saved for the use
|
|
in getopt. */
|
|
void
|
|
__getopt_clean_environment (char **env)
|
|
{
|
|
/* Bash 2.0 puts a special variable in the environment for each
|
|
command it runs, specifying which ARGV elements are the results
|
|
of file name wildcard expansion and therefore should not be
|
|
considered as options. */
|
|
static const char envvar_tail[] = "_GNU_nonoption_argv_flags_=";
|
|
char var[100];
|
|
char *cp, **ep;
|
|
size_t len;
|
|
|
|
/* Generate name of the environment variable. We must know the PID
|
|
and we must not use `sprintf'. */
|
|
if (__libc_pid == 0xf00baa)
|
|
__libc_pid = __getpid ();
|
|
|
|
/* Construct "_<PID>_GNU_nonoption_argv_flags_=" string. */
|
|
cp = memcpy (&var[sizeof (var) - sizeof (envvar_tail)], envvar_tail,
|
|
sizeof (envvar_tail));
|
|
cp = _itoa_word (__libc_pid, cp, 10, 0);
|
|
*--cp = '_';
|
|
len = (var + sizeof (var) - 1) - cp;
|
|
|
|
for (ep = env; *ep != NULL; ++ep)
|
|
if (!strncmp (*ep, cp, len))
|
|
{
|
|
/* Found it. Store this pointer and move later ones back. */
|
|
char **dp = ep;
|
|
__getopt_nonoption_flags = &(*ep)[len];
|
|
do
|
|
dp[0] = dp[1];
|
|
while (*dp++);
|
|
/* Continue the loop in case the name appears again. */
|
|
}
|
|
}
|