forked from Imagelibrary/rtems
55568af2e7
* libcsupport/src/assoc.c, libcsupport/src/libio.c, libcsupport/src/write.c: Split files to shrink minimum.exe. Hopefully this will not be deemed necessary to commit to the 4.7 branch. * libcsupport/src/assoclocalbyname.c, libcsupport/src/assoclocalbyremote.c, libcsupport/src/assoclocalbyremotebitfield.c, libcsupport/src/assocnamebylocal.c, libcsupport/src/assocnamebylocalbitfield.c, libcsupport/src/assocnamebyremote.c, libcsupport/src/assocnamebyremotebitfield.c, libcsupport/src/assocptrbylocal.c, libcsupport/src/assocptrbyname.c, libcsupport/src/assocptrbyremote.c, libcsupport/src/assocremotebylocal.c, libcsupport/src/assocremotebylocalbitfield.c, libcsupport/src/assocremotebyname.c, libcsupport/src/libio_init.c, libcsupport/src/write_r.c: New files.
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* This file contains the support infrastructure used to manage the
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* table of integer style file descriptors used by the low level
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* POSIX system calls like open(), read, fstat(), etc.
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/libio_.h> /* libio_.h pulls in rtems */
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#include <rtems.h>
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#include <rtems/assoc.h> /* assoc.h not included by rtems.h */
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#include <stdio.h> /* O_RDONLY, et.al. */
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#include <fcntl.h> /* O_RDONLY, et.al. */
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#include <assert.h>
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#include <errno.h>
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#include <errno.h>
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#include <string.h> /* strcmp */
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#include <unistd.h>
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#include <stdlib.h> /* calloc() */
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#include <rtems/libio.h> /* libio.h not pulled in by rtems */
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/*
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* File descriptor Table Information
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*/
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extern uint32_t rtems_libio_number_iops;
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rtems_id rtems_libio_semaphore;
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rtems_libio_t *rtems_libio_iops;
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rtems_libio_t *rtems_libio_iop_freelist;
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/*
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* rtems_libio_init
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*
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* Called by BSP startup code to initialize the libio subsystem.
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*/
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void rtems_libio_init( void )
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{
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rtems_status_code rc;
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int i;
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rtems_libio_t *iop;
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if (rtems_libio_number_iops > 0)
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{
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rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
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sizeof(rtems_libio_t));
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if (rtems_libio_iops == NULL)
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rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
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iop = rtems_libio_iop_freelist = rtems_libio_iops;
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for (i = 0 ; i < (rtems_libio_number_iops - 1) ; i++, iop++)
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iop->data1 = iop + 1;
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iop->data1 = NULL;
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}
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/*
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* Create the binary semaphore used to provide mutual exclusion
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* on the IOP Table.
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*/
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rc = rtems_semaphore_create(
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RTEMS_LIBIO_SEM,
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1,
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RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
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RTEMS_NO_PRIORITY,
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&rtems_libio_semaphore
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);
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if ( rc != RTEMS_SUCCESSFUL )
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rtems_fatal_error_occurred( rc );
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/*
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* Initialize the base file system infrastructure.
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*/
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rtems_filesystem_initialize();
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}
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