#include <sys/types.h> #include <sys/socket.h> #include <net/if.h> #include <netinet/in.h> #include <netinet/if_ether.h>char *ether_ntoa(ether_addr_t e);
ether_addr_t *ether_aton(char *s);
int ether_ntohost(char *hostname, ether_addr_t e);
int ether_hostton(char *hostname, ether_addr_t e);
int ether_line(char *l, ether_addr_t e, char *hostname);
The function ether_ntoa converts a 48-bit Ethernet number pointed to by e to its standard ASCII representation; it returns a pointer to the ASCII string. The representation is of the form x:x:x:x:x:x where x is a hexadecimal number between 0 and ff.
The function ether_aton converts an ASCII string in the standard representation back to a 48-bit Ethernet number; the function returns NULL if the string cannot be scanned successfully.
The function ether_ntohost maps an Ethernet number (pointed to by e) to its associated hostname. The string pointed to by hostname must be long enough to hold the hostname and a NULL character. The function returns 0 upon success and non-zero upon failure.
Inversely, the function ether_hostton maps a hostname string to its corresponding Ethernet number; the function modifies the Ethernet number pointed to by e. The function also returns 0 upon success and non-zero upon failure.
The function ether_line scans a line (pointed to by l) and sets the hostname and the Ethernet number (pointed to by e). The string pointed to by hostname must be long enough to hold the hostname and a NULL character. The function returns 0 upon success and non-zero upon failure.
The format of the scanned line is described by ethers(4tcp).