hpux man page for ether_hostton

ETHER_ATON(3)						     Linux Programmer's Manual						     ETHER_ATON(3)

NAME

       ether_aton, ether_ntoa, ether_ntohost, ether_hostton, ether_line, ether_ntoa_r, ether_aton_r - Ethernet address manipulation routines

SYNOPSIS

       #include <netinet/ether.h>

       char *ether_ntoa(const struct ether_addr *addr);

       struct ether_addr *ether_aton(const char *asc);

       int ether_ntohost(char *hostname, const struct ether_addr *addr);

       int ether_hostton(const char *hostname, struct ether_addr *addr);

       int ether_line(const char *line, struct ether_addr *addr,
		      char *hostname);

       /* GNU extensions */
       char *ether_ntoa_r(const struct ether_addr *addr, char *buf);

       struct ether_addr *ether_aton_r(const char *asc,
				       struct ether_addr *addr);

DESCRIPTION

       ether_aton()  converts  the  48-bit  Ethernet host address asc from the standard hex-digits-and-colons notation into binary data in network
       byte order and returns a pointer to it in a statically allocated buffer, which subsequent calls will overwrite.	ether_aton() returns  NULL
       if the address is invalid.

       The ether_ntoa() function converts the Ethernet host address addr given in network byte order to a string in standard hex-digits-and-colons
       notation, omitting leading zeros.  The string is returned in a statically allocated buffer, which subsequent calls will overwrite.

       The ether_ntohost() function maps an Ethernet address to the corresponding hostname in /etc/ethers and returns  nonzero	if  it	cannot	be
       found.

       The  ether_hostton()  function  maps  a	hostname  to the corresponding Ethernet address in /etc/ethers and returns nonzero if it cannot be
       found.

       The ether_line() function parses a line in /etc/ethers format (ethernet address followed by whitespace followed by hostname; '#' introduces
       a  comment)  and returns an address and hostname pair, or nonzero if it cannot be parsed.  The buffer pointed to by hostname must be suffi-
       ciently long, for example, have the same length as line.

       The functions ether_ntoa_r() and ether_aton_r() are reentrant thread-safe versions of ether_ntoa() and ether_aton()  respectively,  and	do
       not use static buffers.

       The structure ether_addr is defined in <net/ethernet.h> as:

	   struct ether_addr {
	       uint8_t ether_addr_octet[6];
	   }

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------------------------------+---------------+-----------+
       |Interface			  | Attribute	  | Value     |
       +----------------------------------+---------------+-----------+
       |ether_aton(), ether_ntoa()	  | Thread safety | MT-Unsafe |
       +----------------------------------+---------------+-----------+
       |ether_ntohost(), ether_hostton(), | Thread safety | MT-Safe   |
       |ether_line(), ether_ntoa_r(),	  |		  |	      |
       |ether_aton_r()			  |		  |	      |
       +----------------------------------+---------------+-----------+
CONFORMING TO

       4.3BSD, SunOS.

BUGS

       In glibc 2.2.5 and earlier, the implementation of ether_line() is broken.

SEE ALSO

       ethers(5)

COLOPHON

       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU
								    2017-09-15							     ETHER_ATON(3)