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RedHat 9 (Linux i386) - man page for endnetent (redhat section 3)

GETNETENT(3)				      Linux Programmer's Manual 				 GETNETENT(3)

NAME
getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent - get network entry
SYNOPSIS
#include <netdb.h> struct netent *getnetent(void); struct netent *getnetbyname(const char *name); struct netent *getnetbyaddr(long net, int type); void setnetent(int stayopen); void endnetent(void);
DESCRIPTION
The getnetent() function reads the next line from the file /etc/networks and returns a structure netent con- taining the broken out fields from the line. The /etc/networks file is opened if necessary. The getnetbyname() function returns a netent structure for the line from /etc/networks that matches the net- work name. The getnetbyaddr() function returns a netent structure for the line that matches the network number net of type type. The setnetent() function opens and rewinds the /etc/networks file. If stayopen is true (1), then the file will not be closed between calls to getnetbyname() and getnetbyaddr(). The endservent() function closes /etc/networks. The netent structure is defined in <netdb.h> as follows: struct netent { char *n_name; /* official network name */ char **n_aliases; /* alias list */ int n_addrtype; /* net address type */ unsigned long int n_net; /* network number */ } The members of the netent structure are: n_name The official name of the network. n_aliases A zero terminated list of alternative names for the network. n_addrtype The type of the network number; always AF_INET. n_net The network number in host byte order.
RETURN VALUE
The getnetent(), getnetbyname() and getnetbyaddr() functions return the netent structure, or a NULL pointer if an error occurs or the end of the file is reached.
FILES
/etc/networks networks database file
CONFORMING TO
BSD 4.3
SEE ALSO
getprotoent(3), getservent(3), networks(5) RFC 1101
BSD
1993-05-15 GETNETENT(3)


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