iofunc_read_default()

Default handler for _IO_READ messages

Synopsis:

#include <sys/iofunc.h>

int iofunc_read_default( resmgr_context_t *ctp,
                         io_read_t *msg,
                         iofunc_ocb_t *ocb );

Library:

libc

Description:

The iofunc_read_default() function implements POSIX semantics for the client's read() call, which is received as an _IO_READ message by the resource manager. This function can be placed directly into the io_funcs table passed to resmgr_attach(), at the read position.

The iofunc_read_default() function calls iofunc_read_verify() to do the actual work, and (if installed in the io_funcs table) issues the reply back to the client.

Returns:

EBADF

Client doesn't have read access to this resource.

EOK

Client has read access to this resource.

Classification:

QNX 6

See also:

iofunc_open(), iofunc_write_default(), iofunc_write_verify()