Comtrol eCos - Manual (Page 527)

Chapter 38. TCP/IP Library Reference
n_net The network number. Network numbers are returned in machine
byte order.
The getnetent() function reads the next line of the file, opening the
file if necessary.
The setnetent() function opens and rewinds the file. If the stayopen
flag is non-zero, the net database will not be closed after each call to
getnetbyname() or getnetbyaddr().
The endnetent() function closes the file.
The getnetbyname() and getnetbyaddr() functions search the domain name
server if the system is configured to use one. If the search fails, or
no name server is configured, they sequentially search from the beginning
of the file until a matching net name or net address and type is found,
or until EOF is encountered. Network numbers are supplied in host order.
FILES
/etc/networks
DIAGNOSTICS
Null pointer (0) returned on EOF or error.
SEE ALSO
resolver(3), networks(5)
HISTORY
The getnetent(), getnetbyaddr(), getnetbyname(), setnetent(), and
endnetent() functions appeared in 4.2BSD.
BUGS
The data space used by these functions is static; if future use requires
the data, it should be copied before any subsequent calls to these func-
tions overwrite it. Only Internet network numbers are currently under-
stood. Expecting network numbers to fit in no more than 32 bits is
naive.
BSD March 13, 1997 BSD
getprotoent
GETPROTOENT(3) System Library Functions Manual GETPROTOENT(3)
NAME
getprotoent, getprotobynumber, getprotobyname, setprotoent, endprotoent -
get protocol entry
SYNOPSIS
#include < netdb.h>
struct protoent *
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