gethost.man

来自「开放源码实时操作系统源码.」· MAN 代码 · 共 27 行

NAME
       gethostbyname, gethostbyaddr, herror, hstrerror - get network host entry

SYNOPSIS
       #include <network.h>

       struct hostent *gethostbyname(const char *name);

       struct hostent *gethostbyaddr(const char *addr, int len, int type);

       void herror(const char *s);

       const char * hstrerror(int err);

DESCRIPTION
       The gethostbyname() function returns a structure  of  type
       hostent  for  the  given host name.  Here name is either a
       host name, or an IPv4 address in standard dot notation, or
       an IPv6 address in colon (and possibly dot) notation. (See
       RFC 1884 for the description of IPv6 addresses.)  If  name
       is  an  IPv4  or  IPv6 address, no lookup is performed and
       gethostbyname() simply copies name into the  h_name  field
       and  its struct in_addr equivalent into the h_addr_list[0]
       field of the returned hostent structure.  If name  doesn't
       end  in  a dot and the environment variable HOSTALIASES is
       set, the alias file pointed to by HOSTALIASES  will  first
       be  searched for name.  (See hostname(7) for the file for