libexplain  1.4.D001
libexplain/buffer/ifreq_hwaddr.c
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00001 /*
00002  * libexplain - Explain errno values returned by libc functions
00003  * Copyright (C) 2009, 2011, 2013 Peter Miller
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU Lesser General Public License as
00007  * published by the Free Software Foundation; either version 3 of the
00008  * License, or (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Lesser General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Lesser General Public License
00016  * along with this program. If not, see <http://www.gnu.org/licenses/>.
00017  */
00018 
00019 #include <libexplain/ac/net/if.h>
00020 
00021 #include <libexplain/buffer/ifreq_hwaddr.h>
00022 #include <libexplain/buffer/pointer.h>
00023 #include <libexplain/buffer/sockaddr.h>
00024 #include <libexplain/is_efault.h>
00025 
00026 
00027 void
00028 explain_buffer_ifreq_hwaddr(explain_string_buffer_t *sb,
00029     const struct ifreq *data)
00030 {
00031     if (explain_is_efault_pointer(data, sizeof(*data)))
00032         explain_buffer_pointer(sb, data);
00033     else
00034     {
00035         const struct ifreq *ifr;
00036 
00037         /*
00038          * This is actually a huge big sucky union.  This specific case is given
00039          * the interface name and the interface hardware address.
00040          */
00041         ifr = data;
00042         explain_string_buffer_puts(sb, "{ ifr_name = ");
00043         explain_string_buffer_puts_quoted_n
00044         (
00045             sb,
00046             ifr->ifr_name,
00047             sizeof(ifr->ifr_name)
00048         );
00049 #ifdef ifr_hwaddr
00050         explain_string_buffer_puts(sb, ", ifr_hwaddr = ");
00051         explain_buffer_sockaddr
00052         (
00053             sb,
00054             &ifr->ifr_hwaddr,
00055             sizeof(ifr->ifr_hwaddr)
00056         );
00057 #endif
00058         explain_string_buffer_puts(sb, " }");
00059     }
00060 }
00061 
00062 
00063 /* vim: set ts=8 sw=4 et : */