mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-17 06:53:26 +08:00
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
|
|
* inet_proto.c
|
|
*
|
|
* 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.
|
|
*
|
|
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <syslog.h>
|
|
#include <fcntl.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
#include <string.h>
|
|
|
|
#include "rt_names.h"
|
|
#include "utils.h"
|
|
|
|
const char *inet_proto_n2a(int proto, char *buf, int len)
|
|
{
|
|
static char ncache[16];
|
|
static int icache = -1;
|
|
struct protoent *pe;
|
|
|
|
if (proto == icache)
|
|
return ncache;
|
|
|
|
pe = getprotobynumber(proto);
|
|
if (pe) {
|
|
icache = proto;
|
|
strncpy(ncache, pe->p_name, 16);
|
|
strncpy(buf, pe->p_name, len);
|
|
return buf;
|
|
}
|
|
snprintf(buf, len, "ipproto-%d", proto);
|
|
return buf;
|
|
}
|
|
|
|
int inet_proto_a2n(const char *buf)
|
|
{
|
|
static char ncache[16];
|
|
static int icache = -1;
|
|
struct protoent *pe;
|
|
|
|
if (icache>=0 && strcmp(ncache, buf) == 0)
|
|
return icache;
|
|
|
|
if (buf[0] >= '0' && buf[0] <= '9') {
|
|
__u8 ret;
|
|
if (get_u8(&ret, buf, 10))
|
|
return -1;
|
|
return ret;
|
|
}
|
|
|
|
pe = getprotobyname(buf);
|
|
if (pe) {
|
|
icache = pe->p_proto;
|
|
strncpy(ncache, pe->p_name, 16);
|
|
return pe->p_proto;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|