ENDNETENT(3XNET) X/Open Networking Services Library Functions ENDNETENT(3XNET)


NAME


endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network
database functions

SYNOPSIS


cc [ flag ... ] file ... -lxnet [ library ... ]
#include <netdb.h>

void endnetent(void);struct netent *getnetbyaddr(in_addr_t net, int type);


struct netent *getnetbyname(const char *name);


struct netent *getnetent(void)


void setnetent(int stayopen);


DESCRIPTION


The getnetbyaddr(), getnetbyname() and getnetent(), functions each return
a pointer to a netent structure, the members of which contain the fields
of an entry in the network database.


The getnetent() function reads the next entry of the database, opening a
connection to the database if necessary.


The getnetbyaddr() function searches the database from the beginning, and
finds the first entry for which the address family specified by type
matches the n_addrtype member and the network number net matches the
n_net member, opening a connection to the database if necessary. The net
argument is the network number in host byte order.


The getnetbyname() function searches the database from the beginning and
finds the first entry for which the network name specified by name
matches the n_name member, opening a connection to the database if
necessary.


The setnetent() function opens and rewinds the database. If the stayopen
argument is non-zero, the connection to the net database will not be
closed after each call to getnetent() (either directly, or indirectly
through one of the other getnet*() functions).


The endnetent() function closes the database.

USAGE


The getnetbyaddr(), getnetbyname() and getnetent(), functions may return
pointers to static data, which may be overwritten by subsequent calls to
any of these functions.


These functions are generally used with the Internet address family.

RETURN VALUES


On successful completion, getnetbyaddr(), getnetbyname() and getnetent(),
return a pointer to a netent structure if the requested entry was found,
and a null pointer if the end of the database was reached or the
requested entry was not found. Otherwise, a null pointer is returned.

ERRORS


No errors are defined.

ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+

SEE ALSO


attributes(5), standards(5)


June 10, 2002 ENDNETENT(3XNET)