FreeBSD-5.3/usr.sbin/atm/atmarpd/atmarp_subr.c
/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD: src/usr.sbin/atm/atmarpd/atmarp_subr.c,v 1.5 2003/07/29 13:40:52 harti Exp $
*
*/
/*
* Server Cache Synchronization Protocol (SCSP) Support
* ----------------------------------------------------
*
* SCSP-ATMARP server interface: misc. subroutines
*
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_sap.h>
#include <netatm/atm_sigmgr.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_ioctl.h>
#include <netatm/uni/unisig_var.h>
#include <netatm/uni/uniip_var.h>
#include <errno.h>
#include <libatm.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "../scspd/scsp_msg.h"
#include "../scspd/scsp_if.h"
#include "../scspd/scsp_var.h"
#include "atmarp_var.h"
#ifndef lint
__RCSID("@(#) $FreeBSD: src/usr.sbin/atm/atmarpd/atmarp_subr.c,v 1.5 2003/07/29 13:40:52 harti Exp $");
#endif
/*
* Find an ATMARP interface, given its socket number
*
* Arguments:
* sd socket descriptor
*
* Returns:
* 0 failure
* else pointer to interface associated with socket
*
*/
Atmarp_intf *
atmarp_find_intf_sock(sd)
int sd;
{
Atmarp_intf *aip;
/*
* Loop through the list of interfaces
*/
for (aip = atmarp_intf_head; aip; aip = aip->ai_next) {
if (aip->ai_scsp_sock == sd)
break;
}
return(aip);
}
/*
* Find an ATMARP interface, given its name
*
* Arguments:
* name pointer to network interface name
*
* Returns:
* 0 failure
* else pointer to interface associated with name
*
*/
Atmarp_intf *
atmarp_find_intf_name(name)
char *name;
{
Atmarp_intf *aip;
/*
* Loop through the list of interfaces
*/
for (aip = atmarp_intf_head; aip; aip = aip->ai_next) {
if (strcmp(name, aip->ai_intf) == 0)
break;
}
return(aip);
}
/*
* Clear the mark field on all ATMARP cache entries
*
* Arguments:
* none
*
* Returns:
* none
*
*/
void
atmarp_clear_marks()
{
int i;
Atmarp_intf *aip;
Atmarp *aap;
/*
* Loop through list of interfaces
*/
for (aip = atmarp_intf_head; aip; aip = aip->ai_next) {
/*
* Clear mark on every entry in the interface's cache
*/
for (i = 0; i < ATMARP_HASHSIZ; i++ ) {
for (aap = aip->ai_arptbl[i]; aap;
aap = aap->aa_next) {
aap->aa_mark = 0;
}
}
}
}
/*
* Check whether the host system is an ATMARP server for
* the LIS associated with a given interface
*
* Arguments:
* aip pointer to an ATMARP interface control block
*
* Returns:
* 1 host is a server
* 0 host is not a server
*
*/
int
atmarp_is_server(aip)
Atmarp_intf *aip;
{
int rc;
size_t buf_len;
struct atminfreq air;
struct air_asrv_rsp *asrv_info;
/*
* Get interface information from the kernel
*/
strcpy(air.air_int_intf, aip->ai_intf);
air.air_opcode = AIOCS_INF_ASV;
buf_len = do_info_ioctl(&air, sizeof(struct air_asrv_rsp));
if ((ssize_t)buf_len == -1)
return(0);
/*
* Check the interface's ATMARP server address
*/
asrv_info = (struct air_asrv_rsp *) air.air_buf_addr;
rc = (asrv_info->asp_addr.address_format == T_ATM_ABSENT) &&
(asrv_info->asp_subaddr.address_format ==
T_ATM_ABSENT);
free(asrv_info);
return(rc);
}
/*
* Check whether an interface is up and ready for service
*
* Arguments:
* aip pointer to network interface block
*
* Returns:
* 0 interface not ready, errno has reason
* 1 interface is ready to go (interface block is updated)
*
*/
int
atmarp_if_ready(aip)
Atmarp_intf *aip;
{
int i, mtu, rc, sel;
size_t len;
Atmarp *aap = (Atmarp *)0;
struct atminfreq air;
struct air_netif_rsp *netif_rsp = (struct air_netif_rsp *)0;
struct air_int_rsp *intf_rsp = (struct air_int_rsp *)0;
struct sockaddr_in *ip_addr;
struct sockaddr_in subnet_mask;
Atm_addr_nsap *anp;
/*
* Get the IP address and physical interface name
* associated with the network interface
*/
bzero(&air, sizeof(struct atminfreq));
air.air_opcode = AIOCS_INF_NIF;
strcpy(air.air_netif_intf, aip->ai_intf);
len = do_info_ioctl(&air, sizeof(struct air_netif_rsp));
if ((ssize_t)len == -1)
goto if_ready_fail;
netif_rsp = (struct air_netif_rsp *)air.air_buf_addr;
ip_addr = (struct sockaddr_in *)&netif_rsp->anp_proto_addr;
if (ip_addr->sin_family != AF_INET ||
ip_addr->sin_addr.s_addr == 0) {
errno = EAFNOSUPPORT;
goto if_ready_fail;
}
/*
* Get the MTU for the network interface
*/
mtu = get_mtu(aip->ai_intf);
if (mtu < 0) {
goto if_ready_fail;
}
/*
* Get the subnet mask associated with the
* network interface
*/
rc = get_subnet_mask(aip->ai_intf, &subnet_mask);
if (rc || subnet_mask.sin_family != AF_INET) {
goto if_ready_fail;
}
/*
* Get physical interface information
*/
bzero(&air, sizeof(struct atminfreq));
air.air_opcode = AIOCS_INF_INT;
strcpy(air.air_int_intf, netif_rsp->anp_phy_intf);
len = do_info_ioctl(&air, sizeof(struct air_int_rsp));
if ((ssize_t)len == -1)
goto if_ready_fail;
intf_rsp = (struct air_int_rsp *)air.air_buf_addr;
/*
* Check the signalling manager
*/
if (intf_rsp->anp_sig_proto != ATM_SIG_UNI30 &&
intf_rsp->anp_sig_proto != ATM_SIG_UNI31 &&
intf_rsp->anp_sig_proto != ATM_SIG_UNI40) {
errno = EINVAL;
goto if_ready_fail;
}
/*
* Check the interface state
*/
if (intf_rsp->anp_sig_state != UNISIG_ACTIVE) {
errno = EINVAL;
goto if_ready_fail;
}
/*
* Check the address format
*/
if (intf_rsp->anp_addr.address_format != T_ATM_ENDSYS_ADDR &&
!(intf_rsp->anp_addr.address_format ==
T_ATM_E164_ADDR &&
intf_rsp->anp_subaddr.address_format ==
T_ATM_ENDSYS_ADDR)) {
errno = EINVAL;
goto if_ready_fail;
}
/*
* Find the selector byte value for the interface
*/
for (i=0; i<strlen(aip->ai_intf); i++) {
if (aip->ai_intf[i] >= '0' &&
aip->ai_intf[i] <= '9')
break;
}
sel = atoi(&aip->ai_intf[i]);
/*
* Make sure we're the server for this interface's LIS
*/
if (!atmarp_is_server(aip)) {
rc = EINVAL;
goto if_ready_fail;
}
/*
* If we already have the interface active and the address
* hasn't changed, return
*/
if (aip->ai_state != AI_STATE_NULL &&
bcmp((caddr_t) &((struct sockaddr_in *)
&netif_rsp->anp_proto_addr)->sin_addr,
(caddr_t)&aip->ai_ip_addr,
sizeof(aip->ai_ip_addr)) == 0 &&
ATM_ADDR_EQUAL(&intf_rsp->anp_addr,
&aip->ai_atm_addr) &&
ATM_ADDR_EQUAL(&intf_rsp->anp_subaddr,
&aip->ai_atm_subaddr)) {
return(1);
}
/*
* Delete any existing ATMARP cache entry for this interface
*/
ATMARP_LOOKUP(aip, aip->ai_ip_addr.s_addr, aap);
if (aap) {
ATMARP_DELETE(aip, aap);
free(aap);
}
/*
* Update the interface entry
*/
aip->ai_ip_addr = ((struct sockaddr_in *)
&netif_rsp->anp_proto_addr)->sin_addr;
aip->ai_subnet_mask = subnet_mask.sin_addr;
aip->ai_mtu = mtu + 8;
ATM_ADDR_COPY(&intf_rsp->anp_addr,
&aip->ai_atm_addr);
ATM_ADDR_COPY(&intf_rsp->anp_subaddr,
&aip->ai_atm_subaddr);
anp = (Atm_addr_nsap *)aip->ai_atm_addr.address;
if (aip->ai_atm_addr.address_format == T_ATM_ENDSYS_ADDR) {
anp->aan_sel = sel;
} else if (aip->ai_atm_addr.address_format ==
T_ATM_E164_ADDR &&
aip->ai_atm_subaddr.address_format ==
T_ATM_ENDSYS_ADDR) {
anp->aan_sel = sel;
}
/*
* Get a new ATMARP cache for the interface
*/
aap = calloc(1, sizeof(Atmarp));
if (aap == NULL)
atmarp_mem_err("atmarp_if_ready: sizeof(Atmarp)");
/*
* Fill out the entry
*/
aap->aa_dstip = aip->ai_ip_addr;
ATM_ADDR_COPY(&intf_rsp->anp_addr, &aap->aa_dstatm);
ATM_ADDR_COPY(&intf_rsp->anp_subaddr,
&aap->aa_dstatmsub);
aap->aa_key.key_len = SCSP_ATMARP_KEY_LEN;
scsp_cache_key(&aap->aa_dstatm, &aap->aa_dstip,
SCSP_ATMARP_KEY_LEN, aap->aa_key.key);
aap->aa_oid.id_len = SCSP_ATMARP_ID_LEN;
aap->aa_seq = SCSP_CSA_SEQ_MIN;
bcopy(&aap->aa_dstip.s_addr, aap->aa_oid.id, SCSP_ATMARP_ID_LEN);
aap->aa_intf = aip;
aap->aa_flags = AAF_SERVER;
aap->aa_origin = UAO_LOCAL;
/*
* Add the entry to the cache
*/
ATMARP_ADD(aip, aap);
/*
* Free dynamic data
*/
free(netif_rsp);
free(intf_rsp);
return(1);
if_ready_fail:
if (netif_rsp)
free(netif_rsp);
if (intf_rsp)
free(intf_rsp);
return(0);
}
/*
* Copy an ATMARP cache entry from kernel format into an entry
* suitable for our cache
*
* Arguments:
* cp pointer to kernel entry
*
* Returns:
* pointer to a new cache entry
* 0 error
*
*/
Atmarp *
atmarp_copy_cache_entry(cp)
struct air_arp_rsp *cp;
{
struct sockaddr_in *ipp;
Atmarp_intf *aip;
Atmarp *aap;
/*
* Sanity checks
*/
if (!cp)
return((Atmarp *)0);
aip = atmarp_find_intf_name(cp->aap_intf);
if (!aip)
return((Atmarp *)0);
/*
* Get a new cache entry
*/
aap = calloc(1, sizeof(Atmarp));
if (aap == NULL) {
errno = ENOMEM;
return(NULL);
}
aap->aa_intf = aip;
/*
* Copy fields from the kernel entry to the new entry
*/
ipp = (struct sockaddr_in *)&cp->aap_arp_addr;
bcopy(&ipp->sin_addr.s_addr, &aap->aa_dstip.s_addr,
sizeof(aap->aa_dstip.s_addr));
ATM_ADDR_COPY(&cp->aap_addr, &aap->aa_dstatm);
ATM_ADDR_COPY(&cp->aap_subaddr, &aap->aa_dstatmsub);
if (cp->aap_origin == UAO_PERM)
aap->aa_flags |= AAF_PERM;
aap->aa_origin = cp->aap_origin;
/*
* Set up fields for SCSP
*/
aap->aa_key.key_len = SCSP_ATMARP_KEY_LEN;
scsp_cache_key(&cp->aap_addr, &aap->aa_dstip,
SCSP_ATMARP_KEY_LEN, (char *)aap->aa_key.key);
aap->aa_oid.id_len = SCSP_ATMARP_ID_LEN;
bcopy(&aip->ai_ip_addr.s_addr, aap->aa_oid.id, SCSP_ATMARP_ID_LEN);
aap->aa_seq = SCSP_CSA_SEQ_MIN;
return(aap);
}
/*
* Send an updated ATMARP cache entry to the kernel
*
* Arguments:
* aap pointer to updated entry
*
* Returns:
* 0 success
* errno reason for failure
*
*/
int
atmarp_update_kernel(aap)
Atmarp *aap;
{
int rc = 0, sd;
struct atmaddreq aar;
struct sockaddr_in *ipp;
/*
* Build ioctl request
*/
bzero(&aar, sizeof(aar));
aar.aar_opcode = AIOCS_ADD_ARP;
strncpy(aar.aar_arp_intf, aap->aa_intf->ai_intf,
sizeof(aar.aar_arp_intf));
aar.aar_arp_origin = UAO_SCSP;
ATM_ADDR_COPY(&aap->aa_dstatm, &aar.aar_arp_addr);
ipp = (struct sockaddr_in *)&aar.aar_arp_dst;
ipp->sin_family = AF_INET;
#if (defined(BSD) && (BSD >= 199103))
ipp->sin_len = sizeof(struct sockaddr_in);
#endif
ipp->sin_addr = aap->aa_dstip;
/*
* Pass the new mapping to the kernel
*/
sd = socket(AF_ATM, SOCK_DGRAM, 0);
if (sd < 0) {
return(errno);
}
if (ioctl(sd, AIOCADD, (caddr_t)&aar) < 0) {
rc = errno;
}
(void)close(sd);
return(rc);
}
/*
* Read the ATMARP cache from the kernel and scan it, processing
* all entries
*
* Arguments:
* none
*
* Returns:
* none
*
*/
void
atmarp_get_updated_cache()
{
int i, rc;
size_t len;
struct atminfreq air;
struct air_arp_rsp *cp;
struct sockaddr_in *ipp;
Atmarp_intf *aip;
Atmarp *aap;
/*
* Set up the request
*/
air.air_opcode = AIOCS_INF_ARP;
air.air_arp_flags = ARP_RESET_REF;
ipp = (struct sockaddr_in *)&air.air_arp_addr;
#if (defined(BSD) && (BSD >= 199103))
ipp->sin_len = sizeof(struct sockaddr_in);
#endif
ipp->sin_family = AF_INET;
ipp->sin_addr.s_addr = INADDR_ANY;
/*
* Issue an ATMARP information request IOCTL
*/
len = do_info_ioctl(&air, sizeof(struct air_arp_rsp) * 200);
if ((ssize_t)len == -1)
return;
/*
* Clear marks on all our cache entries
*/
atmarp_clear_marks();
/*
* Loop through the cache, processing each entry
*/
for (cp = (struct air_arp_rsp *) air.air_buf_addr;
len > 0;
cp++, len -= sizeof(struct air_arp_rsp)) {
atmarp_process_cache_entry(cp);
}
/*
* Now delete any old entries that aren't in the kernel's
* cache any more
*/
for (aip = atmarp_intf_head; aip; aip = aip->ai_next) {
for (i = 0; i < ATMARP_HASHSIZ; i++) {
for (aap = aip->ai_arptbl[i]; aap;
aap = aap->aa_next) {
/*
* Don't delete the entry for the server
*/
if (aap->aa_flags & AAF_SERVER)
continue;
/*
* Delete any entry that isn't marked
*/
if (!aap->aa_mark) {
rc = atmarp_scsp_update(aap,
SCSP_ASTATE_DEL);
if (rc == 0)
ATMARP_DELETE(aip, aap);
}
}
}
}
/*
* Free the ioctl response
*/
free(air.air_buf_addr);
}
/*
* Process an ATMARP cache entry from the kernel. If we already
* have the entry in our local cache, update it, otherwise, add
* it. In either case, mark our local copy so we know it's still
* in the kernel's cache.
*
* Arguments:
* cp pointer to kernel's cache entry
*
* Returns:
* none
*
*/
void
atmarp_process_cache_entry(cp)
struct air_arp_rsp *cp;
{
int rc;
struct sockaddr_in *ipp = (struct sockaddr_in *)&cp->aap_arp_addr;
Atmarp_intf *aip;
Atmarp *aap;
/*
* See whether the entry is for an interface that's
* both configured and up
*/
aip = atmarp_find_intf_name(cp->aap_intf);
if (!aip || aip->ai_state != AI_STATE_UP)
return;
/*
* Make sure the entry is valid
*/
if (!(cp->aap_flags & ARPF_VALID))
return;
/*
* See whether we have the entry in our cache already
*/
ATMARP_LOOKUP(aip, ipp->sin_addr.s_addr, aap);
if (aap) {
/*
* We already have this in our cache--update it
*/
aap->aa_mark = 1;
if ((cp->aap_flags & ARPF_REFRESH) &&
cp->aap_origin != UAO_SCSP) {
aap->aa_seq++;
rc = atmarp_scsp_update(aap, SCSP_ASTATE_UPD);
}
} else {
/*
* This is a new entry--add it to the cache
*/
aap = atmarp_copy_cache_entry(cp);
if (!aap)
return;
ATMARP_ADD(aip, aap);
aap->aa_mark = 1;
rc = atmarp_scsp_update(aap, SCSP_ASTATE_NEW);
}
return;
}
/*
* Print an SCSP ID
*
* Arguments:
* df pointer to a FILE for the dump
* ip pointer to the SCSP ID to print
*
* Returns:
* None
*
*/
static void
print_scsp_id(df, ip)
FILE *df;
Scsp_id *ip;
{
int i;
fprintf(df, "\t next: %p\n", ip->next);
fprintf(df, "\t id_len: %d\n", ip->id_len);
fprintf(df, "\t id: 0x");
for (i = 0; i < ip->id_len; i++) {
fprintf(df, "%0x ", ip->id[i]);
}
fprintf(df, "\n");
}
/*
* Print an SCSP cacke key
*
* Arguments:
* df pointer to a FILE for the dump
* cp pointer to the cacke key to print
*
* Returns:
* None
*
*/
static void
print_scsp_cache_key(df, cp)
FILE *df;
Scsp_ckey *cp;
{
int i;
fprintf(df, "\t key_len: %d\n", cp->key_len);
fprintf(df, "\t key: 0x");
for (i = 0; i < cp->key_len; i++) {
fprintf(df, "%0x ", cp->key[i]);
}
fprintf(df, "\n");
}
/*
* Print an ATMARP interface entry
*
* Arguments:
* df pointer to a FILE for the dump
* aip pointer to interface entry
*
* Returns:
* None
*
*/
void
print_atmarp_intf(df, aip)
FILE *df;
Atmarp_intf *aip;
{
if (!aip) {
fprintf(df, "print_atmarp_intf: NULL interface entry address\n");
return;
}
fprintf(df, "ATMARP network interface entry at %p\n", aip);
fprintf(df, "\tai_next: %p\n", aip->ai_next);
fprintf(df, "\tai_intf: %s\n", aip->ai_intf);
fprintf(df, "\tai_ip_addr: %s\n",
format_ip_addr(&aip->ai_ip_addr));
fprintf(df, "\tai_subnet_mask: %s\n",
inet_ntoa(aip->ai_subnet_mask));
fprintf(df, "\tai_mtu: %d\n", aip->ai_mtu);
fprintf(df, "\tai_atm_addr: %s\n",
format_atm_addr(&aip->ai_atm_addr));
fprintf(df, "\tai_atm_subaddr: %s\n",
format_atm_addr(&aip->ai_atm_subaddr));
fprintf(df, "\tai_scsp_sock: %d\n", aip->ai_scsp_sock);
fprintf(df, "\tai_scsp_sockname: %s\n", aip->ai_scsp_sockname);
fprintf(df, "\tai_state: %d\n", aip->ai_state);
fprintf(df, "\tai_mark: %d\n", aip->ai_mark);
}
/*
* Print an ATMARP cache entry
*
* Arguments:
* df pointer to a FILE for the dump
* aap pointer to cache entry
*
* Returns:
* None
*
*/
void
print_atmarp_cache(df, aap)
FILE *df;
Atmarp *aap;
{
if (!aap) {
fprintf(df, "print_atmarp_cache: NULL ATMARP entry address\n");
return;
}
fprintf(df, "ATMARP entry at %p\n", aap);
fprintf(df, "\taa_next: %p\n", aap->aa_next);
fprintf(df, "\taa_dstip: %s\n", inet_ntoa(aap->aa_dstip));
fprintf(df, "\taa_dstatm: %s\n",
format_atm_addr(&aap->aa_dstatm));
fprintf(df, "\taa_dstatmsub: %s\n",
format_atm_addr(&aap->aa_dstatmsub));
fprintf(df, "\taa_key:\n");
print_scsp_cache_key(df, &aap->aa_key);
fprintf(df, "\taa_oid:\n");
print_scsp_id(df, &aap->aa_oid);
fprintf(df, "\taa_seq: %ld (0x%lx)\n", aap->aa_seq,
aap->aa_seq);
fprintf(df, "\taa_intf: %p\n", aap->aa_intf);
fprintf(df, "\taa_flags: ");
if (aap->aa_flags & AAF_PERM)
fprintf(df, "Permanent ");
if (aap->aa_flags & AAF_SERVER)
fprintf(df, "Server ");
fprintf(df, "\n");
fprintf(df, "\taa_origin: %d\n", aap->aa_origin);
fprintf(df, "\taa_mark: %d\n", aap->aa_mark);
}
/*
* Print the entire ATMARP cache
*
* Arguments:
* df pointer to a FILE for the dump
* aip pointer to interface whose cache is to be printed
*
* Returns:
* None
*
*/
void
dump_atmarp_cache(df, aip)
FILE *df;
Atmarp_intf *aip;
{
int i;
Atmarp *aap;
if (!aip) {
fprintf(df, "dump_atmarp_cache: NULL interface address\n");
return;
}
fprintf(df, "ATMARP cache for interface %s\n", aip->ai_intf);
for (i=0; i<ATMARP_HASHSIZ; i++) {
for (aap=aip->ai_arptbl[i]; aap; aap=aap->aa_next) {
print_atmarp_cache(df, aap);
}
}
}
#ifdef NOTDEF
/*
* Print an ATMARP super-LIS entry
*
* Arguments:
* df pointer to a FILE for the dump
* asp pointer to super-LIS entry to be printed
*
* Returns:
* None
*
*/
void
print_atmarp_slis(df, asp)
FILE *df;
Atmarp_slis *asp;
{
Atmarp_intf **aipp;
if (!asp) {
fprintf(df, "print_atmarp_slis: NULL SLIS address\n");
return;
}
fprintf(df, "SLIS entry at 0x%0x\n", (u_long)asp);
fprintf(df, "\tas_next: 0x%0x\n", (u_long)asp->as_next);
fprintf(df, "\tas_name: %s\n", asp->as_name);
fprintf(df, "\tas_cnt: %d\n", asp->as_cnt);
for (aipp = &asp->as_intfs; *aipp; aipp++) {
fprintf(df, "\t%s (%s)\n", (*aipp)->ai_name,
(*aipp)->ai_intf);
}
}
#endif
/*
* Dump ATMARPD information
*
* Called as the result of a SIGINT signal.
*
* Arguments:
* sig signal number
*
* Returns:
* None
*
*/
void
atmarp_sigint(sig)
int sig;
{
Atmarp_intf *aip;
FILE *df;
char fname[64];
static int dump_no = 0;
/*
* Build a file name
*/
bzero(&fname, sizeof(fname));
sprintf(fname, "/tmp/atmarpd.%d.%03d.out", getpid(), dump_no++);
/*
* Open the output file
*/
df = fopen(fname, "w");
if (df == (FILE *)0)
return;
/*
* Dump the interface control blocks and
* associated ATMARP caches
*/
for (aip = atmarp_intf_head; aip; aip = aip->ai_next) {
print_atmarp_intf(df, aip);
fprintf(df, "\n");
dump_atmarp_cache(df, aip);
fprintf(df, "\n");
}
/*
* Close the output file
*/
(void)fclose(df);
}