iofunc_close_dup_default()

Default handler for _IO_CLOSE messages

Synopsis:

#include <sys/iofunc.h>

int iofunc_close_dup_default(
       resmgr_context_t *ctp,
       io_close_t *msg,
       iofunc_ocb_t *ocb );

Arguments:

ctp

A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.

msg

A pointer to the io_close_t structure that contains the message that the resource manager received. For more information, see the documentation for iofunc_close_dup().

ocb

A pointer to the iofunc_ocb_t structure for the Open Control Block that was created when the client opened the resource.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The iofunc_close_dup_default() function implements default actions for the _IO_CLOSE message. This function simply calls iofunc_close_dup() to do the actual work.

You can place iofunc_close_dup_default() directly into the io_funcs table passed to resmgr_attach(), at the close_dup position, or you can call iofunc_func_init() to initialize all of the functions to their default values.

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If your resource manager uses iofunc_lock_default(), you must use both this function (iofunc_close_dup_default()) and iofunc_unblock_default(), as they provide necessary ancillary functionality for managing file locks. This is because file locks are owned by the process, and aren't inherited by the child process.

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Returns:

EOK

Successful completion.

Classification:

QNX Neutrino

See also:

iofunc_close_dup(), iofunc_func_init(), iofunc_ocb_t, iofunc_time_update(), resmgr_attach(), resmgr_context_t, resmgr_io_funcs_t

Writing a Resource Manager

Resource Managers chapter of Getting Started with QNX Neutrino