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author | Denis Vlasenko | 2006-12-27 04:35:09 +0000 |
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committer | Denis Vlasenko | 2006-12-27 04:35:09 +0000 |
commit | 7b76233290bd9dead1848f28ed6d0edfcceb8e09 (patch) | |
tree | b963999fc54eddb65f1929b894f868e24851fc9c /networking/udhcp/clientsocket.c | |
download | busybox-1_3_0.zip busybox-1_3_0.tar.gz |
Correcting tag name to be like previous ones1_3_0
Diffstat (limited to 'networking/udhcp/clientsocket.c')
-rw-r--r-- | networking/udhcp/clientsocket.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/networking/udhcp/clientsocket.c b/networking/udhcp/clientsocket.c new file mode 100644 index 0000000..8520619 --- /dev/null +++ b/networking/udhcp/clientsocket.c @@ -0,0 +1,59 @@ +/* vi: set sw=4 ts=4: */ +/* + * clientsocket.c -- DHCP client socket creation + * + * udhcp client + * + * Russ Dill <Russ.Dill@asu.edu> July 2001 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <features.h> +#if (__GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined(_NEWLIB_VERSION) +#include <netpacket/packet.h> +#include <net/ethernet.h> +#else +#include <asm/types.h> +#include <linux/if_packet.h> +#include <linux/if_ether.h> +#endif + +#include "common.h" + + +int raw_socket(int ifindex) +{ + int fd; + struct sockaddr_ll sock; + + DEBUG("Opening raw socket on ifindex %d", ifindex); + fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); + if (fd < 0) { + bb_perror_msg("socket"); + return -1; + } + + sock.sll_family = AF_PACKET; + sock.sll_protocol = htons(ETH_P_IP); + sock.sll_ifindex = ifindex; + if (bind(fd, (struct sockaddr *) &sock, sizeof(sock)) < 0) { + bb_perror_msg("bind"); + close(fd); + return -1; + } + + return fd; +} |