glibc/sysdeps/unix/sysv/linux/ifreq.c
Ulrich Drepper 2533775393 Update.
2003-06-13  Ulrich Drepper  <drepper@redhat.com>

	Fixing gcc 3.3 warnings, part II.
	* argp/argp-help.c (hol_entry_long_iterate): Always inline.
	* elf/dl-load.c (cache_rpath): Don't inline.
	* iconvdata/cns11642l2.h: Always inline all functions.
	* iconvdata/iso-ir-165.h: Likewise.
	* locale/Makefile (aux): Add coll-lookup.
	* locale/coll-lookup.c: New file.
	* locale/coll-lookup.h (collidx_table_lookup): Do not define here.
	(collseq_table_lookup): Likewise.
	* locale/weightwc.h: Adjust collidx_table_lookup calls for name change.
	* posix/fnmatch_loop.c: Adjust collseq_table_lookup calls for name
	change.
	* posix/regcomp.c: Likewise.
	* posix/regexec.c: Likewise.
	* locale/programs/3level.h (*_get): Always inline.
	* locale/programs/locfile.h: Move definition of handle_copy to...
	* locale/programs/locfile.c: ...here.
	* locale/programs/ld-collate.c (obstack_int32_grow): Always inline.
	(obstack_int32_grow_fast): Likewise.
	(utf8_encode): Likewise.
	(find_element): Avoid aliasing problems.
	(insert_value): Likewise.
	(collate_read): Likewise.
	* nss/getent.c (print_hosts): Don't inline
	(print_networks): Likewise.
	(print_shadow): Likewise.
	(build_doc): Likewise.
	* nss/nss_files/files-parse.c [ENTDATA] (parser_stclass): Don't
	inline.
	* posix/regcomp.c (re_set_fastmap): Always inline.
	(seek_collating_symbol_entry): Likewise.
	(lookup_collation_sequence_value): Likewise.
	(build_range_exp): Likewise.
	(build_collating_symbol): Likewise.
	* posix/regexec.c (acquire_init_state_context): Don't inline.
	(clean_state_log_if_need): Likewise.
	* resolv/res_send.c (eConsIovec): Rewrite to not return struct and
	adjust all callers.
	(evConsTime): Likewise.
	(evAddTime): Likewise.
	(evSubTime): Likewise.
	(evNowTime): Likewise.
	(evTimeSpec): Removed.
	(__libc_res_nsend): Avoid aliasing problem.
	* sysdeps/unix/sysv/linux/ifreq.h: Move old_siocgifconf definition to..
	* sysdeps/unix/sysv/linux/ifreq.c: ...here.
	* sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_dl_string_hwcap):
	Always inline.
	(_dl_string_platform): Likewise.
	* wctype/wchar-lookup.h (wctype_table_lookup): Always inline.
	(wcwidth_table_lookup): Likewise.
	(wctrans_table_lookup): Likewise.

	* sysdeps/unix/sysv/linux/sys/epoll.h: Include <stdint.h>.
2003-06-13 21:05:42 +00:00

101 lines
2.4 KiB
C

/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>.
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 "ifreq.h"
/* Variable to signal whether SIOCGIFCONF is not available. */
#if __ASSUME_SIOCGIFNAME == 0 || 1
static int old_siocgifconf;
#else
# define old_siocgifconf 0
#endif
void
__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
{
int fd = sockfd;
struct ifconf ifc;
int rq_len;
int nifs;
# define RQ_IFS 4
if (fd < 0)
fd = __opensock ();
if (fd < 0)
{
*num_ifs = 0;
*ifreqs = NULL;
return;
}
ifc.ifc_buf = NULL;
/* We may be able to get the needed buffer size directly, rather than
guessing. */
if (! old_siocgifconf)
{
ifc.ifc_buf = NULL;
ifc.ifc_len = 0;
if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0 || ifc.ifc_len == 0)
{
# if __ASSUME_SIOCGIFNAME == 0
old_siocgifconf = 1;
# endif
rq_len = RQ_IFS * sizeof (struct ifreq);
}
else
rq_len = ifc.ifc_len;
}
else
rq_len = RQ_IFS * sizeof (struct ifreq);
/* Read all the interfaces out of the kernel. */
while (1)
{
ifc.ifc_len = rq_len;
ifc.ifc_buf = realloc (ifc.ifc_buf, ifc.ifc_len);
if (ifc.ifc_buf == NULL || __ioctl (fd, SIOCGIFCONF, &ifc) < 0)
{
if (ifc.ifc_buf)
free (ifc.ifc_buf);
if (fd != sockfd)
__close (fd);
*num_ifs = 0;
*ifreqs = NULL;
return;
}
if (!old_siocgifconf || ifc.ifc_len < rq_len)
break;
rq_len *= 2;
}
nifs = ifc.ifc_len / sizeof (struct ifreq);
if (fd != sockfd)
__close (fd);
*num_ifs = nifs;
*ifreqs = realloc (ifc.ifc_buf, nifs * sizeof (struct ifreq));
}