getnetbyname()

Get a network entry, given a name

Synopsis:

#include <netdb.h>

struct netent * getnetbyname( const char * name );

Arguments:

name
The name of the network whose entry you want to find.

Library:

libsocket

Use the -l socket option to qcc to link against this library.

Description:

The getnetbyname() function gets the network entry for the given name. This function returns a pointer to a structure of type netent , which contains the broken-out fields of a line in the network database, /etc/networks.

The setnetent() function opens and rewinds the file. If you pass a nonzero stayopen argument to setnetent(), the network database isn't closed after each call to getnetbyname() or getnetbyaddr() .

The getnetbyaddr() and getnetbyname() functions 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.

Returns:

A pointer to a valid netent structure, or NULL if an error occurs.

Files:

/etc/networks
Network name database file.

Classification:

POSIX 1003.1

Safety:  
Cancellation point Yes
Interrupt handler No
Signal handler No
Thread No

Last modified: 2013-12-23

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