ENDNETENT(3XNET) X/Open Networking Services Library Functions
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(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
attributes(7),
standards(7) June 10, 2002 ENDNETENT(3XNET)
