setservent() — Open the network services information data set

Standards

Standards / Extensions	C or C++	Dependencies
XPG4.2 Single UNIX Specification, Version 3	both

Format

X/Open:

#define _XOPEN_SOURCE_EXTENDED 1
#include <netdb.h>

void setservent(int stayopen);

Berkeley sockets:

#define _OE_SOCKETS
#include <netdb.h>

void setservent(int stayopen);

General description

The setservent() function opens and rewinds the /etc/services or the tcpip.ETC.SERVICES data set. For more information on /etc/services or the tcpip.ETC.SERVICES data set, see z/OS V2R1.0 Communications Server: IP Configuration Guide. If the stayopen flag is nonzero, the tcpip.ETC.SERVICES data set remains open after each call.

Special behavior for C++: To use this function with C++, you must use the _XOPEN_SOURCE_EXTENDED 1 feature test macro.

Returned value

setservent() returns no values.

Related information

netdb.h
endservent() — Close network services information data sets
getservbyname() — Get a server entry by name
getservent() — Get the next service entry