LXR iproute2/lib/rose

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2
   3#include <stdio.h>
   4#include <stdlib.h>
   5#include <unistd.h>
   6#include <fcntl.h>
   7#include <sys/ioctl.h>
   8#include <sys/socket.h>
   9#include <netinet/in.h>
  10#include <arpa/inet.h>
  11#include <string.h>
  12#include <errno.h>
  13
  14#include <linux/netdevice.h>
  15#include <linux/if_arp.h>
  16#include <linux/sockios.h>
  17#include <linux/rose.h>
  18
  19#include "rt_names.h"
  20#include "utils.h"
  21
  22static const char *rose_ntop1(const rose_address *src, char *dst,
  23                              socklen_t size)
  24{
  25        char *p = dst;
  26        int i;
  27
  28        if (size < 10)
  29                return NULL;
  30
  31        for (i = 0; i < 5; i++) {
  32                *p++ = '0' + ((src->rose_addr[i] >> 4) & 0xf);
  33                *p++ = '0' + ((src->rose_addr[i]     ) & 0xf);
  34        }
  35
  36        if (size == 10)
  37                return dst;
  38
  39        *p = '\0';
  40
  41        return dst;
  42}
  43
  44const char *rose_ntop(int af, const void *addr, char *buf, socklen_t buflen)
  45{
  46        switch (af) {
  47        case AF_ROSE:
  48                errno = 0;
  49                return rose_ntop1((rose_address *)addr, buf, buflen);
  50
  51        default:
  52                errno = EAFNOSUPPORT;
  53        }
  54
  55        return NULL;
  56}
  57