Files
rtems/cpukit/libcsupport/src/libio_init.c
T
Joel Sherrill 71c012aff5 2010-07-04 Joel Sherrill <joel.sherrill@oarcorp.com>
* libblock/include/rtems/ide_part_table.h, libblock/src/bdbuf.c,
	libcsupport/src/__times.c, libcsupport/src/libio_init.c,
	libcsupport/src/mallocfreespace.c, libcsupport/src/mount-mgr.c,
	libcsupport/src/mount.c, libcsupport/src/rewinddir.c,
	libcsupport/src/seekdir.c, libcsupport/src/telldir.c,
	libcsupport/src/unmount.c, libfs/src/dosfs/fat.c,
	libfs/src/dosfs/fat_fat_operations.c, libfs/src/dosfs/msdos_create.c,
	libfs/src/dosfs/msdos_dir.c, libfs/src/dosfs/msdos_eval.c,
	libfs/src/dosfs/msdos_file.c, libfs/src/dosfs/msdos_format.c,
	libfs/src/dosfs/msdos_fsunmount.c, libfs/src/dosfs/msdos_initsupp.c,
	libfs/src/dosfs/msdos_rename.c, libmisc/cpuuse/cpuusagereport.c,
	libmisc/shell/vis.c, libmisc/stackchk/check.c, sapi/src/posixapi.c,
	telnetd/telnetd.c: Remove include of assert.h when it is not needed.
2010-07-04 14:53:47 +00:00

90 lines
2.3 KiB
C

/*
* This file contains the support infrastructure used to manage the
* table of integer style file descriptors used by the low level
* POSIX system calls like open(), read, fstat(), etc.
*
* COPYRIGHT (c) 1989-2010.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/libio_.h> /* libio_.h pulls in rtems */
#include <rtems.h>
#include <rtems/assoc.h> /* assoc.h not included by rtems.h */
#include <stdio.h> /* O_RDONLY, et.al. */
#include <fcntl.h> /* O_RDONLY, et.al. */
#include <errno.h>
#include <errno.h>
#include <string.h> /* strcmp */
#include <unistd.h>
#include <stdlib.h> /* calloc() */
#include <rtems/libio.h> /* libio.h not pulled in by rtems */
/*
* File descriptor Table Information
*/
rtems_id rtems_libio_semaphore;
rtems_libio_t *rtems_libio_iops;
rtems_libio_t *rtems_libio_iop_freelist;
/*
* rtems_libio_init
*
* Called by BSP startup code to initialize the libio subsystem.
*/
void rtems_libio_init( void )
{
rtems_status_code rc;
uint32_t i;
rtems_libio_t *iop;
if (rtems_libio_number_iops > 0)
{
rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
sizeof(rtems_libio_t));
if (rtems_libio_iops == NULL)
rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
iop = rtems_libio_iop_freelist = rtems_libio_iops;
for (i = 0 ; (i + 1) < rtems_libio_number_iops ; i++, iop++)
iop->data1 = iop + 1;
iop->data1 = NULL;
}
/*
* Create the binary semaphore used to provide mutual exclusion
* on the IOP Table.
*/
rc = rtems_semaphore_create(
RTEMS_LIBIO_SEM,
1,
RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
RTEMS_NO_PRIORITY,
&rtems_libio_semaphore
);
if ( rc != RTEMS_SUCCESSFUL )
rtems_fatal_error_occurred( rc );
/*
* Initialize the base file system infrastructure.
*/
if (rtems_fs_init_helper)
(* rtems_fs_init_helper)();
}