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(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)