term% cat index.txt IP(2) System Calls Manual IP(2)
NAME
eipconv, parseip, parseether, myipaddr, myetheraddr, maskip, equivip -
Internet protocol
SYNOPSIS
#include <u.h>
#include <libc.h>
#include <ip.h>
int eipconv(void *o, int f1, int f2, int f3, int chr)
int parseip(uchar *ipaddr, char *str)
int parseether(uchar *eaddr, char *str)
int myipaddr(uchar *ipaddr, char *net)
int myetheraddr(uchar *eaddr, char *net)
void maskip(uchar *from, uchar *mask, uchar *to)
int equivip(uchar *ipaddr1, uchar *ipaddr2)
DESCRIPTION
These routines are used by Internet Protocol (IP) programs to manipu‐
late IP and Ethernet addresses. IP addresses are stored as a string of
4 unsigned chars, Ethernet addresses as 6 unsigned chars. The string
representation of IP addresses is (up to) 4 decimal integers from 0 to
255 separated by periods. The string representation of Ethernet ad‐
dresses is exactly 12 hexadecimal digits.
Eipconv is a print(2) formatter for Ethernet (verb E) and Internet pro‐
tocol (verb I) addresses.
Parseip converts a string pointed to by str to a 4-byte IP address
starting at ipaddr. Myipaddr reads the IP address string from file
/net/1/local and parses it into ipaddr. Both routines return a nega‐
tive number on errors.
Parseether converts a string pointed to by str to a 6 byte Ethernet ad‐
dress starting at eaddr. Myetheraddr reads the Ethernet address string
from file net/1/stats and parses it into eaddr. Both routines return a
negative number on errors.
Maskip places the bit-wise AND of the IP addresses pointed to by its
first two arguments into the buffer pointed to by the third.
Equivip returns non-zero if the IP addresses pointed to by its two ar‐
guments are equal.
SOURCE
/sys/src/libip
SEE ALSO
print(2)
IP(2)