From f720d3d2120ebb9a87af7c10e0939fb9dfee20ef Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 29 Oct 1999 21:40:21 +0000 Subject: Update. 1999-10-27 Andreas Jaeger * sysdeps/generic/ifreq.h: New file. * resolv/res_hconf.c: Add missing includes to get all prototypes. (_res_hconf_reorder_addrs): Rewrite. This never worked before. Reported by John DiMarco . (_res_hconf_reorder_addrs): Made thread safe. (free_mem): New function, needed for malloc debugging. 1999-10-29 Andreas Jaeger * sysdeps/unix/sysv/linux/if_index.c (opensock): Move function to ... * sysdeps/generic/opensock.c (__opensock): ...here in a new file. * sysdeps/unix/sysv/linux/if_index.c: Change all callers of opensock to use __opensock. * socket/Makefile (routines): Add opensock. * include/sys/socket.h (__opensock): Add prototype declaration. --- sysdeps/generic/ifreq.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sysdeps/generic/ifreq.h (limited to 'sysdeps/generic/ifreq.h') diff --git a/sysdeps/generic/ifreq.h b/sysdeps/generic/ifreq.h new file mode 100644 index 0000000..6443c09 --- /dev/null +++ b/sysdeps/generic/ifreq.h @@ -0,0 +1,76 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + Contributed by Andreas Jaeger . + + 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. */ + +#include +#include +#include +#include +#include +#include + + +static inline void +__ifreq (struct ifreq **ifreqs, int *num_ifs) +{ + int fd = __opensock (); + struct ifconf ifc; + int rq_len; + int nifs; +# define RQ_IFS 4 + + if (fd < 0) + { + *num_ifs = 0; + *ifreqs = NULL; + return; + } + + ifc.ifc_buf = NULL; + rq_len = RQ_IFS * sizeof (struct ifreq); + do + { + 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); + + __close (fd); + *num_ifs = 0; + *ifreqs = NULL; + return; + } + rq_len *= 2; + } + while (rq_len < sizeof (struct ifreq) + ifc.ifc_len); + + nifs = ifc.ifc_len / sizeof (struct ifreq); + + __close (fd); + + *num_ifs = nifs; + *ifreqs = realloc (ifc.ifc_buf, nifs * sizeof (struct ifreq)); +} + + +static inline void +__if_freereq (struct ifreq *ifreqs) +{ + free (ifreqs); +} -- cgit v1.1