diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ifreq.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/ifreq.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/sysdeps/unix/sysv/linux/ifreq.c b/sysdeps/unix/sysv/linux/ifreq.c deleted file mode 100644 index d941ba1a93..0000000000 --- a/sysdeps/unix/sysv/linux/ifreq.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Copyright (C) 1999-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#include "ifreq.h" - - -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. */ - ifc.ifc_buf = NULL; - ifc.ifc_len = 0; - if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0 || ifc.ifc_len == 0) - rq_len = RQ_IFS * sizeof (struct ifreq); - else - rq_len = ifc.ifc_len; - - /* Read all the interfaces out of the kernel. */ - 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; - } - - nifs = ifc.ifc_len / sizeof (struct ifreq); - - if (fd != sockfd) - __close (fd); - - *num_ifs = nifs; - *ifreqs = realloc (ifc.ifc_buf, nifs * sizeof (struct ifreq)); -} |