ref: 0b4ace02c469484c9f2a42fdc79ffe1d123d04d8
dir: /sys/src/ape/lib/bsd/inet_addr.c/
/* posix */
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
/* bsd extensions */
#include <sys/uio.h>
#include <sys/socket.h>
#include <netinet/in.h>
unsigned long
inet_addr(char *from)
{
struct in_addr in;
if(inet_aton(from, &in) == 0)
return INADDR_NONE;
return in.s_addr;
}