setnetent() — Open the network information data set
Standards
Standards / Extensions | C or C++ | Dependencies |
---|---|---|
XPG4.2 |
both |
Format
X/Open:
#define _XOPEN_SOURCE_EXTENDED 1
#include <netdb.h>
void setnetent(int stayopen);
Berkeley
sockets:
#define _OE_SOCKETS
#include <netdb.h>
void setnetent(int stayopen);
General description
The setnetent() function opens and rewinds the tcpip.HOSTS.ADDRINFO data set, which contains information about known networks. If the stayopen flag is nonzero, the tcpip.HOSTS.ADDRINFO remains open after each call to setnetent().
You can use the X_ADDR environment
variable to specify a data set other than tcpip.HOSTS.ADDRINFO.
Note: For more information on these data sets and environment variables, tcpip.HOSTS.ADDRINFO,
see z/OS Communications Server: IP Configuration Guide.
Special behavior for C++: To use this function with C++, you must use the _XOPEN_SOURCE_EXTENDED 1 feature test macro.
Returned value
setnetent() returns no values.