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@@ -0,0 +1,196 @@
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+--- /dev/null
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++++ b/include/netinet/ether.h
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+@@ -0,0 +1,10 @@
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++#ifndef _NETINET_ETHER_H
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++#define _NETINET_ETHER_H
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++
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++char *ether_ntoa(const struct ether_addr *);
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++struct ether_addr *ether_aton(const char *);
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++int ether_ntohost(char *, const struct ether_addr *);
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++int ether_hostton(const char *, struct ether_addr *);
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++int ether_line(const char *, struct ether_addr *, char *);
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++
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++#endif /* !_NETINET_ETHER_H */
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+--- /dev/null
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++++ b/src/network/ethers.c
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+@@ -0,0 +1,180 @@
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++/* Origin NetBSD: src/lib/libc/net/ethers.c */
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++
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++/*
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++ * ethers(3N) a la Sun.
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++ *
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++ * Written by Roland McGrath <[email protected]> 10/14/93.
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++ * Public domain.
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++ *
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++ * port for musl by Abdoulaye Walsimou GAYE <[email protected]> 2012/10/15
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++ */
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++
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++#define _BSD_SOURCE
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++#include <net/ethernet.h>
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++#include <netinet/ether.h>
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++
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++#include <sys/param.h>
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++#include <assert.h>
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++#include <errno.h>
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++#include <paths.h>
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++#include <stdio.h>
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++#include <stdlib.h>
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++#include <string.h>
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++
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++#ifndef _PATH_ETHERS
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++#define _PATH_ETHERS "/etc/ethers"
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++#endif
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++
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++/*
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++ * ether_ntoa():
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++ * This function converts this structure into an ASCII string of the form
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++ * ``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated
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++ * by colons. It returns a pointer to a static buffer that is reused for
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++ * each call.
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++ */
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++char *ether_ntoa(const struct ether_addr *e)
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++{
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++ static char a[18];
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++
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++ assert(e != NULL);
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++
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++ (void) snprintf(a, sizeof a, "%02x:%02x:%02x:%02x:%02x:%02x",
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++ e->ether_addr_octet[0], e->ether_addr_octet[1],
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++ e->ether_addr_octet[2], e->ether_addr_octet[3],
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++ e->ether_addr_octet[4], e->ether_addr_octet[5]);
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++ return a;
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++}
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++
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++/*
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++ * ether_aton():
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++ * This function converts an ASCII string of the same form and to a structure
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++ * containing the 6 octets of the address. It returns a pointer to a
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++ * static structure that is reused for each call.
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++ */
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++struct ether_addr *ether_aton(const char *s)
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++{
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++ static struct ether_addr n;
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++ unsigned int i[6];
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++
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++ assert(s != NULL);
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++
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++ if (sscanf(s, " %x:%x:%x:%x:%x:%x ", &i[0], &i[1],
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++ &i[2], &i[3], &i[4], &i[5]) == 6) {
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++ n.ether_addr_octet[0] = (unsigned char)i[0];
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++ n.ether_addr_octet[1] = (unsigned char)i[1];
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++ n.ether_addr_octet[2] = (unsigned char)i[2];
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++ n.ether_addr_octet[3] = (unsigned char)i[3];
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++ n.ether_addr_octet[4] = (unsigned char)i[4];
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++ n.ether_addr_octet[5] = (unsigned char)i[5];
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++ return &n;
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++ }
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++ return NULL;
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++}
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++
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++/*
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++ * ether_ntohost():
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++ * This function interrogates the data base mapping host names to Ethernet
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++ * addresses, /etc/ethers.
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++ * It looks up the given Ethernet address and writes the associated host name
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++ * into the character buffer passed.
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++ * It returns zero if it finds the requested host name and -1 if not.
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++ */
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++int ether_ntohost(char *hostname, const struct ether_addr *e)
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++{
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++ FILE *f;
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++ char *p;
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++ size_t len;
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++ struct ether_addr try;
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++
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++ assert(hostname != NULL);
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++ assert(e != NULL);
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++
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++ f = fopen(_PATH_ETHERS, "r");
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++ if (f == NULL)
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++ return -1;
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++ while ((p = fgetln(f, &len)) != NULL) {
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++ if (p[len - 1] != '\n')
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++ continue; /* skip lines w/o \n */
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++ p[--len] = '\0';
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++ if (ether_line(p, &try, hostname) == 0 &&
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++ memcmp(&try, e, sizeof try) == 0) {
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++ (void)fclose(f);
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++ return 0;
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++ }
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++ }
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++ (void)fclose(f);
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++ errno = ENOENT;
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++ return -1;
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++}
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++
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++/*
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++ * ether_hostton():
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++ * This function interrogates the data base mapping host names to Ethernet
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++ * addresses, /etc/ethers.
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++ * It looks up the given host name and writes the associated Ethernet address
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++ * into the structure passed.
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++ * It returns zero if it finds the requested address and -1 if not.
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++ */
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++int ether_hostton(const char *hostname, struct ether_addr *e)
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++{
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++ FILE *f;
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++ char *p;
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++ size_t len;
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++ char try[MAXHOSTNAMELEN + 1];
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++
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++ assert(hostname != NULL);
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++ assert(e != NULL);
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++
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++ f = fopen(_PATH_ETHERS, "r");
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++ if (f==NULL)
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++ return -1;
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++
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++ while ((p = fgetln(f, &len)) != NULL) {
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++ if (p[len - 1] != '\n')
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++ continue; /* skip lines w/o \n */
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++ p[--len] = '\0';
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++ if (ether_line(p, e, try) == 0 && strcmp(hostname, try) == 0) {
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++ (void)fclose(f);
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++ return 0;
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++ }
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++ }
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++ (void)fclose(f);
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++ errno = ENOENT;
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++ return -1;
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++}
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++
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++/*
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++ * ether_line():
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++ * This function parses a line from the /etc/ethers file and fills in the passed
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++ * ``struct ether_addr'' and character buffer with the Ethernet address and host
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++ * name on the line.
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++ * It returns zero if the line was successfully parsed and -1 if not.
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++ */
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++int ether_line(const char *l, struct ether_addr *e, char *hostname)
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++{
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++ unsigned int i[6];
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++
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++#define S2(arg) #arg
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++#define S1(arg) S2(arg)
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++ static const char fmt[] = " %x:%x:%x:%x:%x:%x"
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++ " %" S1(MAXHOSTNAMELEN) "s\n";
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++#undef S2
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++#undef S1
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++
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++ assert(l != NULL);
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++ assert(e != NULL);
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++ assert(hostname != NULL);
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++
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++ if (sscanf(l, fmt,
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++ &i[0], &i[1], &i[2], &i[3], &i[4], &i[5], hostname) == 7) {
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++ e->ether_addr_octet[0] = (unsigned char)i[0];
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++ e->ether_addr_octet[1] = (unsigned char)i[1];
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++ e->ether_addr_octet[2] = (unsigned char)i[2];
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++ e->ether_addr_octet[3] = (unsigned char)i[3];
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++ e->ether_addr_octet[4] = (unsigned char)i[4];
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++ e->ether_addr_octet[5] = (unsigned char)i[5];
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++ return 0;
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++ }
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++ errno = EINVAL;
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++ return -1;
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++}
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