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| author | David Hankins <dhankins@isc.org> | 2007-05-08 23:05:22 +0000 |
|---|---|---|
| committer | David Hankins <dhankins@isc.org> | 2007-05-08 23:05:22 +0000 |
| commit | 98bd7ca0990e6d88e3345d3bc966ebe8216691a7 (patch) | |
| tree | c4437ca467e8f733d530170a5c445747b2defd68 /common/lpf.c | |
| parent | 74dc3e0b2786c46956e7517398ae6f7c6dad52d7 (diff) | |
| download | isc-dhcp-98bd7ca0990e6d88e3345d3bc966ebe8216691a7.tar.gz | |
DHCPv6 branch merged to HEAD.
Diffstat (limited to 'common/lpf.c')
| -rw-r--r-- | common/lpf.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/common/lpf.c b/common/lpf.c index 12c46bc1..255fea8f 100644 --- a/common/lpf.c +++ b/common/lpf.c @@ -28,7 +28,7 @@ #ifndef lint static char copyright[] = -"$Id: lpf.c,v 1.31 2007/04/27 23:54:05 each Exp $ Copyright (c) 2004 Internet Systems Consortium. All rights reserved.\n"; +"$Id: lpf.c,v 1.32 2007/05/08 23:05:20 dhankins Exp $ Copyright (c) 2004 Internet Systems Consortium. All rights reserved.\n"; #endif /* not lint */ #include "dhcpd.h" @@ -43,6 +43,7 @@ static char copyright[] = #include "includes/netinet/ip.h" #include "includes/netinet/udp.h" #include "includes/netinet/if_ether.h" +#include <net/if.h> /* Reinitializes the specified interface after an address change. This is not required for packet-filter APIs. */ @@ -406,9 +407,59 @@ void maybe_setup_fallback () if_readsocket, 0, fallback_discard, 0, 0); if (status != ISC_R_SUCCESS) - log_fatal ("Can't register I/O handle for %s: %s", + log_fatal ("Can't register I/O handle for \"%s\": %s", fbi -> name, isc_result_totext (status)); interface_dereference (&fbi, MDL); } } + +void +get_hw_addr(const char *name, struct hardware *hw) { + int sock; + struct ifreq tmp; + struct sockaddr *sa; + + if (strlen(name) >= sizeof(tmp.ifr_name)) { + log_fatal("Device name too long: \"%s\"", name); + } + + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock < 0) { + log_fatal("Can't create socket for \"%s\": %m", name); + } + + memset(&tmp, 0, sizeof(tmp)); + strcpy(tmp.ifr_name, name); + if (ioctl(sock, SIOCGIFHWADDR, &tmp) < 0) { + log_fatal("Error getting hardware address for \"%s\": %m", + name); + } + + sa = &tmp.ifr_hwaddr; + switch (sa->sa_family) { + case ARPHRD_ETHER: + hw->hlen = 7; + hw->hbuf[0] = HTYPE_ETHER; + memcpy(&hw->hbuf[1], sa->sa_data, 6); + break; + case ARPHRD_IEEE802: +#ifdef ARPHDR_IEEE802_TR + case ARPHRD_IEEE802_TR: +#endif /* ARPHDR_IEEE802_TR */ + hw->hlen = 7; + hw->hbuf[0] = HTYPE_IEEE802; + memcpy(&hw->hbuf[1], sa->sa_data, 6); + break; + case ARPHRD_FDDI: + hw->hlen = 17; + hw->hbuf[0] = HTYPE_FDDI; + memcpy(&hw->hbuf[1], sa->sa_data, 16); + break; + default: + log_fatal("Unsupported device type %ld for \"%s\"", + sa->sa_family, name); + } + + close(sock); +} #endif |