glibc/inet/inet_ntoa.c
Ulrich Drepper 5db915715f Update.
2001-08-14  Jakub Jelinek  <jakub@redhat.com>

	* resolv/nss_dns/dns-host.c (RESOLVSORT): Define.
	(addrsort): New function.
	* resolv/gethnamaddr.c (RESOLVSORT): Define.

2001-08-14  Jakub Jelinek  <jakub@redhat.com>

	* string/strsignal.c (free_mem): Remove.

2001-08-14  Andreas Jaeger  <aj@suse.de>

	* inet/inet_ntoa.c (free_mem): Remove, it's not used anymore.
	Closes PR libc/2477, reported by Dylan Alex Simon
	<dylan@dylex.caltech.edu>.

2001-08-14  Ulrich Drepper  <drepper@redhat.com>

	* locale/Makefile (aux): Add xlocale.
	* locale/xlocale.c: New file.
	* include/locale.c (_nl_C_locobj): Declare.
	* iconv/gconv_charset.h: Use __tolower_l, __isdigit_l, __isspace_l
	with _nl_C_locobj instead of tolower, isdigit, isspace.
	* iconv/gconv_conf.c: Likewise.
	* iconv/gconv_int.h: Likewise.
	* iconv/gconv_open.c: Likewise.

	* locale/newlocale.c: Minor cleanups.
2001-08-14 23:29:55 +00:00

99 lines
2.8 KiB
C

/* Convert Inet number to ASCII representation.
Copyright (C) 1997, 1998, 2000, 2001 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <bits/libc-lock.h>
/* The interface of this function is completely stupid, it requires a
static buffer. We relax this a bit in that we allow at least one
buffer for each thread. */
/* This is the key for the thread specific memory. */
static __libc_key_t key;
/* If nonzero the key allocation failed and we should better use a
static buffer than fail. */
static char local_buf[18];
static char *static_buf;
/* Destructor for the thread-specific data. */
static void init (void);
static void free_key_mem (void *mem);
char *
inet_ntoa (struct in_addr in)
{
__libc_once_define (static, once);
char *buffer;
unsigned char *bytes;
/* If we have not yet initialized the buffer do it now. */
__libc_once (once, init);
if (static_buf != NULL)
buffer = static_buf;
else
{
/* We don't use the static buffer and so we have a key. Use it
to get the thread-specific buffer. */
buffer = __libc_getspecific (key);
if (buffer == NULL)
{
/* No buffer allocated so far. */
buffer = malloc (18);
if (buffer == NULL)
/* No more memory available. We use the static buffer. */
buffer = local_buf;
else
__libc_setspecific (key, buffer);
}
}
bytes = (unsigned char *) &in;
__snprintf (buffer, 18, "%d.%d.%d.%d",
bytes[0], bytes[1], bytes[2], bytes[3]);
return buffer;
}
/* Initialize buffer. */
static void
init (void)
{
if (__libc_key_create (&key, free_key_mem))
/* Creating the key failed. This means something really went
wrong. In any case use a static buffer which is better than
nothing. */
static_buf = local_buf;
}
/* Free the thread specific data, this is done if a thread terminates. */
static void
free_key_mem (void *mem)
{
free (mem);
__libc_setspecific (key, NULL);
}