diff options
Diffstat (limited to 'sysdeps/unix/sysv/solaris2/kopensolaris-gnu/ifreq.c')
-rw-r--r-- | sysdeps/unix/sysv/solaris2/kopensolaris-gnu/ifreq.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/ifreq.c b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/ifreq.c new file mode 100644 index 0000000000..af6e551510 --- /dev/null +++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/ifreq.c @@ -0,0 +1,56 @@ +/* Copyright (C) 2008 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008. + + 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 <net/if.h> +#include <sys/ioctl.h> +#include <errno.h> +#include <stddef.h> +#include <string.h> +#include <not-cancel.h> +#include <memory.h> + +void +__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd) +{ + struct ifconf ifc; + int nifs; + char *buf = NULL; + + /* Determine number of interfaces. */ + if (__ioctl (sockfd, SIOCGIFNUM, &nifs) != 0) + goto error; + + /* Get interfaces. */ + ifc.ifc_len = nifs * sizeof(struct ifreq); + buf = malloc (ifc.ifc_len); + ifc.ifc_buf = buf; + if (buf == NULL) + goto error; + if (__ioctl (sockfd, SIOCGIFCONF, &ifc) != 0) + goto error; + + *ifreqs = (struct ifreq *)buf; + *num_ifs = nifs; + return; + +error: + *ifreqs = NULL; + *num_ifs = 0; + free (buf); +} |