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Diffstat (limited to 'c/src/exec/libfs/src/dosfs/msdos_file.c')
-rw-r--r--c/src/exec/libfs/src/dosfs/msdos_file.c485
1 files changed, 0 insertions, 485 deletions
diff --git a/c/src/exec/libfs/src/dosfs/msdos_file.c b/c/src/exec/libfs/src/dosfs/msdos_file.c
deleted file mode 100644
index da36827338..0000000000
--- a/c/src/exec/libfs/src/dosfs/msdos_file.c
+++ /dev/null
@@ -1,485 +0,0 @@
-/*
- * MSDOS file handlers implementation
- *
- * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
- * Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * @(#) $Id$
- */
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdlib.h>
-#include <assert.h>
-#include <errno.h>
-
-#include <rtems.h>
-#include <rtems/libio.h>
-#include <rtems/libio_.h>
-
-#include "fat.h"
-#include "fat_fat_operations.h"
-#include "fat_file.h"
-
-#include "msdos.h"
-
-/* msdos_file_open --
- * Open fat-file which correspondes to the file
- *
- * PARAMETERS:
- * iop - file control block
- * pathname - name
- * flag - flags
- * mode - mode
- *
- * RETURNS:
- * RC_OK, if file opened successfully, or -1 if error occured
- * and errno set appropriately
- */
-int
-msdos_file_open(rtems_libio_t *iop, const char *pathname, unsigned32 flag,
- unsigned32 mode)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- rc = fat_file_reopen(fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- if (iop->flags & LIBIO_FLAGS_APPEND)
- iop->offset = fat_fd->fat_file_size;
-
- iop->size = fat_fd->fat_file_size;
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
-
-/* msdos_file_close --
- * Close fat-file which correspondes to the file. If fat-file descriptor
- * which correspondes to the file is not marked "removed", synchronize
- * size, first cluster number, write time and date fields of the file.
- *
- * PARAMETERS:
- * iop - file control block
- *
- * RETURNS:
- * RC_OK, if file closed successfully, or -1 if error occured (errno set
- * appropriately)
- */
-int
-msdos_file_close(rtems_libio_t *iop)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- /*
- * if fat-file descriptor is not marked as "removed", synchronize
- * size, first cluster number, write time and date fields of the file
- */
- if (!FAT_FILE_IS_REMOVED(fat_fd))
- {
- rc = msdos_set_first_cluster_num(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- rc = msdos_set_file_size(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- rc = msdos_set_dir_wrt_time_and_date(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
- }
-
- rc = fat_file_close(iop->pathinfo.mt_entry, fat_fd);
-
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
-}
-
-/* msdos_file_read --
- * This routine read from file pointed to by file control block into
- * the specified data buffer provided by user
- *
- * PARAMETERS:
- * iop - file control block
- * buffer - buffer provided by user
- * count - the number of bytes to read
- *
- * RETURNS:
- * the number of bytes read on success, or -1 if error occured (errno set
- * appropriately)
- */
-ssize_t
-msdos_file_read(rtems_libio_t *iop, void *buffer, unsigned32 count)
-{
- ssize_t ret = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- ret = fat_file_read(iop->pathinfo.mt_entry, fat_fd, iop->offset, count,
- buffer);
-
- rtems_semaphore_release(fs_info->vol_sema);
- return ret;
-}
-
-/* msdos_file_write --
- * This routine writes the specified data buffer into the file pointed to
- * by file control block.
- *
- * PARAMETERS:
- * iop - file control block
- * buffer - data to write
- * count - count of bytes to write
- *
- * RETURNS:
- * the number of bytes written on success, or -1 if error occured
- * and errno set appropriately
- */
-ssize_t
-msdos_file_write(rtems_libio_t *iop,const void *buffer, unsigned32 count)
-{
- ssize_t ret = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- ret = fat_file_write(iop->pathinfo.mt_entry, fat_fd, iop->offset, count,
- buffer);
- if (ret < 0)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return -1;
- }
-
- /*
- * update file size in both fat-file descriptor and file control block if
- * file was extended
- */
- if (iop->offset + ret > fat_fd->fat_file_size)
- fat_fd->fat_file_size = iop->offset + ret;
-
- iop->size = fat_fd->fat_file_size;
-
- rtems_semaphore_release(fs_info->vol_sema);
- return ret;
-}
-
-/* msdos_file_lseek --
- * Process lseek call to the file: extend file if lseek is up to the end
- * of the file.
- *
- * PARAMETERS:
- * iop - file control block
- * offset - new offset
- * whence - predefine directive
- *
- * RETURNS:
- * new offset on success, or -1 if error occured (errno set
- * appropriately).
- */
-int
-msdos_file_lseek(rtems_libio_t *iop, off_t offset, int whence)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
- unsigned32 real_size = 0;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- rc = fat_file_extend(iop->pathinfo.mt_entry, fat_fd, iop->offset,
- &real_size);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- if (real_size > fat_fd->fat_file_size)
- fat_fd->fat_file_size = iop->offset = real_size;
-
- iop->size = fat_fd->fat_file_size;
-
- rtems_semaphore_release(fs_info->vol_sema);
- return iop->offset;
-}
-
-/* msdos_file_stat --
- *
- * PARAMETERS:
- * loc - node description
- * buf - stat buffer provided by user
- *
- * RETURNS:
- * RC_OK on success, or -1 if error occured (errno set appropriately)
- */
-int
-msdos_file_stat(
- rtems_filesystem_location_info_t *loc,
- struct stat *buf
- )
-{
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = loc->mt_entry->fs_info;
- fat_file_fd_t *fat_fd = loc->node_access;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- buf->st_dev = fs_info->fat.vol.dev;
- buf->st_ino = fat_fd->ino;
- buf->st_mode = S_IFREG;
- buf->st_rdev = 0ll;
- buf->st_size = fat_fd->fat_file_size;
- buf->st_blocks = fat_fd->fat_file_size >> FAT_SECTOR512_BITS;
- buf->st_blksize = fs_info->fat.vol.bps;
- buf->st_mtime = fat_fd->mtime;
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
-
-/* msdos_file_ftruncate --
- * Truncate the file (if new length is greater then current do nothing).
- *
- * PARAMETERS:
- * iop - file control block
- * length - new length
- *
- * RETURNS:
- * RC_OK on success, or -1 if error occured (errno set appropriately).
- */
-int
-msdos_file_ftruncate(rtems_libio_t *iop, off_t length)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
- fat_file_fd_t *fat_fd = iop->file_info;
-
- if (length >= fat_fd->fat_file_size)
- return RC_OK;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- rc = fat_file_truncate(iop->pathinfo.mt_entry, fat_fd, length);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- /*
- * fat_file_truncate do nothing if new length >= fat-file size, so update
- * file size only if length < fat-file size
- */
- if (length < fat_fd->fat_file_size)
- iop->size = fat_fd->fat_file_size = length;
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
-
-/* msdos_file_sync --
- * Synchronize file - synchronize file data and if file is not removed
- * synchronize file metadata.
- *
- * PARAMETERS:
- * iop - file control block
- *
- * RETURNS:
- * RC_OK on success, or -1 if error occured (errno set appropriately)
- */
-int
-msdos_file_sync(rtems_libio_t *iop)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- fat_file_fd_t *fat_fd = iop->file_info;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- /* synchronize file data */
- rc = fat_file_datasync(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- /*
- * if fat-file descriptor is not marked "removed" - synchronize file
- * metadata
- */
- if (!FAT_FILE_IS_REMOVED(fat_fd))
- {
- rc = msdos_set_first_cluster_num(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
- rc = msdos_set_file_size(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
- rc = msdos_set_dir_wrt_time_and_date(iop->pathinfo.mt_entry, fat_fd);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
- }
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
-
-/* msdos_file_datasync --
- * Synchronize file - synchronize only file data (metadata is letf intact).
- *
- * PARAMETERS:
- * iop - file control block
- *
- * RETURNS:
- * RC_OK on success, or -1 if error occured (errno set appropriately)
- */
-int
-msdos_file_datasync(rtems_libio_t *iop)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- fat_file_fd_t *fat_fd = iop->file_info;
- msdos_fs_info_t *fs_info = iop->pathinfo.mt_entry->fs_info;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- /* synchronize file data */
- rc = fat_file_datasync(iop->pathinfo.mt_entry, fat_fd);
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
-
-
-/* msdos_file_ioctl --
- *
- *
- * PARAMETERS:
- * iop - file control block
- * ...
- *
- * RETURNS:
- *
- */
-int
-msdos_file_ioctl(rtems_libio_t *iop,unsigned32 command, void *buffer)
-{
- int rc = RC_OK;
-
- return rc;
-}
-
-/* msdos_file_rmnod --
- * Remove node associated with a file - set up first name character to
- * predefined value(and write it to the disk), and mark fat-file which
- * correspondes to the file as "removed"
- *
- * PARAMETERS:
- * pathloc - node description
- *
- * RETURNS:
- * RC_OK on success, or -1 if error occured (errno set appropriately)
- */
-int
-msdos_file_rmnod(rtems_filesystem_location_info_t *pathloc)
-{
- int rc = RC_OK;
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- msdos_fs_info_t *fs_info = pathloc->mt_entry->fs_info;
- fat_file_fd_t *fat_fd = pathloc->node_access;
-
- sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
- MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
- if (sc != RTEMS_SUCCESSFUL)
- set_errno_and_return_minus_one(EIO);
-
- /* mark file removed */
- rc = msdos_set_first_char4file_name(pathloc->mt_entry, fat_fd->info_cln,
- fat_fd->info_ofs,
- MSDOS_THIS_DIR_ENTRY_EMPTY);
- if (rc != RC_OK)
- {
- rtems_semaphore_release(fs_info->vol_sema);
- return rc;
- }
-
- fat_file_mark_removed(pathloc->mt_entry, fat_fd);
-
- rtems_semaphore_release(fs_info->vol_sema);
- return RC_OK;
-}
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