ham_disconnect(), ham_disconnect_nd(), ham_disconnect_node()

Disconnect from the HAM

Synopsis:

#include <ha/ham.h>

int ham_disconnect( unsigned flags);
int ham_disconnect_nd( int nd, unsigned flags);
int ham_disconnect_node( const char *nodename, unsigned flags);

Library:

libham

Description:

The ham_disconnect() function closes a previously open connection to a HAM. The ham_disconnect_nd() and ham_disconnect_node() functions close previously opened connections to remote HAMs.

The nd specified to ham_disconnect_nd is the node identifier of the remote node at the time the ham_disconnect_nd() call is made.

---

Since node identifiers are transient objects, you should obtain the value for nd immediately before the call, using netmgr_strtond() or another function that converts nodenames into node identifiers.

---

The ham_disconnect_node() function takes as a parameter a fully qualified node name (FQNN).

Because the library maintains a reference count, the actual connection to the HAM is released only when the number of calls made to ham_disconnect() matches the number of calls previously made to ham_connect().

When a process calls ham_connect() and then calls fork(), the connection is no longer valid in the child process. To reconnect to the HAM, the child process must call either:

• ham_connect() directly, which will automatically close the existing connection and reopen a new one

  or:

• ham_disconnect(), followed by ham_connect().

There are no flags defined at this time.

Returns:

0

Success.

-1

An error occurred (errno is set).

Errors:

EINVAL

There's no valid connection to the HAM to disconnect.

Classification:

QNX Neutrino

See also:

ham_attach_self(), ham_connect(), ham_connect_nd(), ham_connect_node(), ham_stop()

fork() in the QNX Neutrino Library Reference