myaddrs1.lc

unix网络编程卷1：套接口API的全书源码

#include    "unp.h"##  1 ##src/names/myaddrs1.c##
#include    <sys/param.h>##  2 ##src/names/myaddrs1.c##

char  **##  3 ##src/names/myaddrs1.c##
my_addrs(int *addrtype)##  4 ##src/names/myaddrs1.c##
{##  5 ##src/names/myaddrs1.c##
    struct hostent *hptr;##  6 ##src/names/myaddrs1.c##
    char    myname[MAXHOSTNAMELEN];##  7 ##src/names/myaddrs1.c##

    if (gethostname(myname, sizeof(myname)) < 0)##  8 ##src/names/myaddrs1.c##
        return (NULL);##  9 ##src/names/myaddrs1.c##

    if ((hptr = gethostbyname(myname)) == NULL)## 10 ##src/names/myaddrs1.c##
        return (NULL);## 11 ##src/names/myaddrs1.c##

    *addrtype = hptr->h_addrtype;## 12 ##src/names/myaddrs1.c##
    return (hptr->h_addr_list);## 13 ##src/names/myaddrs1.c##
}## 14 ##src/names/myaddrs1.c##