Linux Command Reference

Name

getrpcent, getrpcbyname, getrpcbynumber — get RPC entry

Synopsis

#include <netdb.h>

struct rpcent *getrpcent( void);

struct rpcent *getrpcbyname( char * name);

struct rpcent *getrpcbynumber( int number);

void setrpcent( int stayopen);

endrpcent()

DESCRIPTION

getrpcent(), getrpcbyname(), and getrpcbynumber() each return a pointer to an object with the following structure containing the broken-out fields of a line in the rpc program number data base, /etc/rpc.

struct rpcent {

char * r_name; /* name of server for this rpc program */

char ** r_aliases; /* alias list */

long r_number; /* rpc program number */

};

The members of this structure are:

r_name

The name of the server for this rpc program.

r_aliases

A zero terminated list of alternate names for the rpc program.

r_number

The rpc program number for this service.

getrpcent() reads the next line of the file, opening the file if necessary.

setrpcent() opens and rewinds the file. If the stayopen flag is non-zero, the net data base will not be closed after each call to getrpcent() (either directly, or indirectly through one of the other “getrpc” calls).

endrpcent() closes the file.

getrpcbyname() and getrpcbynumber() sequentially search from the beginning of the file until a matching rpc program name or program number is found, or until end-of-file is encountered.

RETURN VALUE

A NULL pointer is returned on EOF or error.

FILES

/etc/rpc

CONFORMING TO

Not in POSIX.1-2001. Present on the BSDs, Solaris, and many other systems.

BUGS

All information is contained in a static area so it must be copied if it is to be saved.