diff options
Diffstat (limited to 'newlib/libc/sys/linux/net/ifreq.c')
-rw-r--r-- | newlib/libc/sys/linux/net/ifreq.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/newlib/libc/sys/linux/net/ifreq.c b/newlib/libc/sys/linux/net/ifreq.c deleted file mode 100644 index 9d6a6121b..000000000 --- a/newlib/libc/sys/linux/net/ifreq.c +++ /dev/null @@ -1,100 +0,0 @@ -/* Copyright (C) 1999, 2002, 2003, 2004 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; - void *newp = realloc (ifc.ifc_buf, ifc.ifc_len); - if (newp == NULL - || (ifc.ifc_buf = newp, ioctl (fd, SIOCGIFCONF, &ifc)) < 0) - { - 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)); -} |