What does it mean "as far as possible"?
On Mon, Oct 20, 2014 at 10:24 AM, Sebastian Huber
<sebastian.hu...@embedded-brains.de> wrote:
> Implement ctime and mtime updates according to POSIX as far as possible.
> The ctime is mapped to the FAT create time and date. The mtime is
> mapped to the FAT last modified time and date. For the atime use the
> mtime.
> ---
> cpukit/libfs/src/dosfs/fat_file.c | 34 +++++++++
> cpukit/libfs/src/dosfs/fat_file.h | 33 +++++++++
> cpukit/libfs/src/dosfs/msdos.h | 22 +-----
> cpukit/libfs/src/dosfs/msdos_create.c | 12 ++--
> cpukit/libfs/src/dosfs/msdos_dir.c | 2 +
> cpukit/libfs/src/dosfs/msdos_file.c | 76 +++-----------------
> cpukit/libfs/src/dosfs/msdos_handlers_file.c | 2 +-
> cpukit/libfs/src/dosfs/msdos_init.c | 18 ++++-
> cpukit/libfs/src/dosfs/msdos_misc.c | 100
> ++++++++++++++++-----------
> 9 files changed, 166 insertions(+), 133 deletions(-)
>
> diff --git a/cpukit/libfs/src/dosfs/fat_file.c
> b/cpukit/libfs/src/dosfs/fat_file.c
> index 2899f1b..a1f77fa 100644
> --- a/cpukit/libfs/src/dosfs/fat_file.c
> +++ b/cpukit/libfs/src/dosfs/fat_file.c
> @@ -165,6 +165,38 @@ fat_file_reopen(fat_file_fd_t *fat_fd)
> return RC_OK;
> }
>
> +int
> +fat_file_update(fat_fs_info_t *fs_info, fat_file_fd_t *fat_fd)
> +{
> + int ret_rc = RC_OK;
> +
> + /*
> + * 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))
> + {
> + int rc;
> +
> + if (fat_fd->fat_file_type == FAT_FILE)
> + {
> + rc = fat_file_set_first_cluster_num(fs_info, fat_fd);
> + if (rc != RC_OK)
> + ret_rc = rc;
> +
> + rc = fat_file_set_file_size(fs_info, fat_fd);
> + if (rc != RC_OK)
> + ret_rc = rc;
> + }
> +
> + rc = fat_file_set_time_and_date(fs_info, fat_fd);
> + if (rc != RC_OK)
> + ret_rc = rc;
> + }
> +
> + return ret_rc;
> +}
> +
> /* fat_file_close --
> * Close fat-file. If count of links to fat-file
> * descriptor is greater than 1 (i.e. somebody esle holds pointer
> @@ -204,6 +236,8 @@ fat_file_close(
> {
> uint32_t key = fat_construct_key(fs_info, &fat_fd->dir_pos.sname);
>
> + fat_file_update(fs_info, fat_fd);
> +
> if (fat_fd->flags & FAT_FILE_REMOVED)
> {
> rc = fat_file_truncate(fs_info, fat_fd, 0);
> diff --git a/cpukit/libfs/src/dosfs/fat_file.h
> b/cpukit/libfs/src/dosfs/fat_file.h
> index 79af62a..fa177f6 100644
> --- a/cpukit/libfs/src/dosfs/fat_file.h
> +++ b/cpukit/libfs/src/dosfs/fat_file.h
> @@ -22,6 +22,7 @@
> #include <rtems.h>
> #include <rtems/libio_.h>
>
> +#include <sys/time.h>
> #include <time.h>
>
> #include "fat.h"
> @@ -88,6 +89,7 @@ typedef struct fat_file_fd_s
> fat_dir_pos_t dir_pos;
> uint8_t flags;
> fat_file_map_t map;
> + time_t ctime;
> time_t mtime;
>
> } fat_file_fd_t;
> @@ -139,6 +141,17 @@ fat_construct_key(
> ((pos->ofs >> 5) & (FAT_DIRENTRIES_PER_SEC512 - 1)) );
> }
>
> +static inline void fat_file_update_ctime(fat_file_fd_t *fat_fd, time_t t)
> +{
> + fat_fd->ctime = t;
> +}
> +
> +static inline void fat_file_update_ctime_mtime(fat_file_fd_t *fat_fd, time_t
> t)
> +{
> + fat_fd->ctime = t;
> + fat_fd->mtime = t;
> +}
> +
> /* Prototypes for "fat-file" operations */
> int
> fat_file_open(fat_fs_info_t *fs_info,
> @@ -192,6 +205,26 @@ void
> fat_file_mark_removed(fat_fs_info_t *fs_info,
> fat_file_fd_t *fat_fd);
>
> +int
> +fat_file_size(fat_fs_info_t *fs_info,
> + fat_file_fd_t *fat_fd);
> +
> +int
> +fat_file_set_first_cluster_num(fat_fs_info_t *fs_info,
> + fat_file_fd_t *fat_fd);
> +
> +int
> +fat_file_set_file_size(fat_fs_info_t *fs_info,
> + fat_file_fd_t *fat_fd);
> +
> +int
> +fat_file_set_time_and_date(fat_fs_info_t *fs_info,
> + fat_file_fd_t *fat_fd);
> +
> +int
> +fat_file_update(fat_fs_info_t *fs_info,
> + fat_file_fd_t *fat_fd);
> +
> #ifdef __cplusplus
> }
> #endif
> diff --git a/cpukit/libfs/src/dosfs/msdos.h b/cpukit/libfs/src/dosfs/msdos.h
> index bb191fe..baa34d7 100644
> --- a/cpukit/libfs/src/dosfs/msdos.h
> +++ b/cpukit/libfs/src/dosfs/msdos.h
> @@ -134,6 +134,8 @@ typedef rtems_filesystem_node_types_t msdos_node_type_t;
> #define MSDOS_FILE_WDATE_OFFSET 24
> #define MSDOS_FILE_WTIME_OFFSET 22
> #define MSDOS_FILE_ADATE_OFFSET 18
> +#define MSDOS_FILE_CDATE_OFFSET 16
> +#define MSDOS_FILE_CTIME_OFFSET 14
>
> /*
> * Possible values of DIR_Attr field of 32 bytes long FAT Directory Entry
> @@ -333,8 +335,6 @@ int msdos_initialize_support(
> rtems_dosfs_convert_control *converter
> );
>
> -int msdos_file_close(rtems_libio_t *iop /* IN */);
> -
> ssize_t msdos_file_read(
> rtems_libio_t *iop, /* IN */
> void *buffer, /* IN */
> @@ -360,8 +360,6 @@ msdos_file_ftruncate(
>
> int msdos_file_sync(rtems_libio_t *iop);
>
> -int msdos_file_datasync(rtems_libio_t *iop);
> -
> ssize_t msdos_dir_read(
> rtems_libio_t *iop, /* IN */
> void *buffer, /* IN */
> @@ -461,28 +459,12 @@ void msdos_date_unix2dos(
>
> unsigned int msdos_date_dos2unix(unsigned int dd, unsigned int dt);
>
> -int msdos_set_first_cluster_num(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> - fat_file_fd_t *fat_fd
> -);
> -
> -int msdos_set_file_size(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> - fat_file_fd_t *fat_fd
> -);
> -
> int msdos_set_first_char4file_name(
> rtems_filesystem_mount_table_entry_t *mt_entry,
> fat_dir_pos_t *dir_pos,
> unsigned char first_char
> );
>
> -int msdos_set_dir_wrt_time_and_date(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> - fat_file_fd_t *fat_fd
> -);
> -
> -
> int msdos_dir_is_empty(
> rtems_filesystem_mount_table_entry_t *mt_entry,
> fat_file_fd_t *fat_fd,
> diff --git a/cpukit/libfs/src/dosfs/msdos_create.c
> b/cpukit/libfs/src/dosfs/msdos_create.c
> index 735e053..d58fe56 100644
> --- a/cpukit/libfs/src/dosfs/msdos_create.c
> +++ b/cpukit/libfs/src/dosfs/msdos_create.c
> @@ -70,7 +70,7 @@ msdos_creat_node(const rtems_filesystem_location_info_t
> *parent_loc,
> msdos_fs_info_t *fs_info = parent_loc->mt_entry->fs_info;
> fat_file_fd_t *parent_fat_fd = parent_loc->node_access;
> fat_file_fd_t *fat_fd = NULL;
> - time_t time_ret = 0;
> + time_t now;
> uint16_t time_val = 0;
> uint16_t date = 0;
> fat_dir_pos_t dir_pos;
> @@ -102,11 +102,10 @@ msdos_creat_node(const rtems_filesystem_location_info_t
> *parent_loc,
> *MSDOS_DIR_NT_RES(short_node) = MSDOS_RES_NT_VALUE;
>
> /* set up last write date and time */
> - time_ret = time(NULL);
> - if ( time_ret == -1 )
> - return -1;
> + now = time(NULL);
> + fat_file_update_ctime_mtime(parent_fat_fd, now);
>
> - msdos_date_unix2dos(time_ret, &date, &time_val);
> + msdos_date_unix2dos(now, &date, &time_val);
> *MSDOS_DIR_CRT_TIME(short_node) = CT_LE_W(time_val);
> *MSDOS_DIR_CRT_DATE(short_node) = CT_LE_W(date);
> *MSDOS_DIR_WRITE_TIME(short_node) = CT_LE_W(time_val);
> @@ -192,6 +191,7 @@ msdos_creat_node(const rtems_filesystem_location_info_t
> *parent_loc,
> fat_fd->fat_file_size = 0;
> fat_fd->fat_file_type = FAT_DIRECTORY;
> fat_fd->size_limit = MSDOS_MAX_DIR_LENGHT;
> + fat_file_update_ctime_mtime(fat_fd, now);
>
> /*
> * dot and dotdot entries are identical to new node except the
> @@ -260,7 +260,7 @@ msdos_creat_node(const rtems_filesystem_location_info_t
> *parent_loc,
> }
>
> /* write first cluster num of a new directory to disk */
> - rc = msdos_set_first_cluster_num(parent_loc->mt_entry, fat_fd);
> + rc = fat_file_set_first_cluster_num(&fs_info->fat, fat_fd);
> if (rc != RC_OK)
> goto error;
>
> diff --git a/cpukit/libfs/src/dosfs/msdos_dir.c
> b/cpukit/libfs/src/dosfs/msdos_dir.c
> index f311d89..b10ed9e 100644
> --- a/cpukit/libfs/src/dosfs/msdos_dir.c
> +++ b/cpukit/libfs/src/dosfs/msdos_dir.c
> @@ -403,6 +403,8 @@ msdos_dir_stat(
> 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_atime = fat_fd->mtime;
> + buf->st_ctime = fat_fd->ctime;
> buf->st_mtime = fat_fd->mtime;
>
> rtems_semaphore_release(fs_info->vol_sema);
> diff --git a/cpukit/libfs/src/dosfs/msdos_file.c
> b/cpukit/libfs/src/dosfs/msdos_file.c
> index 33fe525..f575290 100644
> --- a/cpukit/libfs/src/dosfs/msdos_file.c
> +++ b/cpukit/libfs/src/dosfs/msdos_file.c
> @@ -30,70 +30,6 @@
>
> #include "msdos.h"
>
> -static int
> -msdos_file_update(rtems_libio_t *iop)
> -{
> - int rc = RC_OK;
> - fat_file_fd_t *fat_fd = iop->pathinfo.node_access;
> -
> - /*
> - * 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)
> - {
> - return rc;
> - }
> -
> - rc = msdos_set_file_size(iop->pathinfo.mt_entry, fat_fd);
> - if (rc != RC_OK)
> - {
> - return rc;
> - }
> -
> - rc = msdos_set_dir_wrt_time_and_date(iop->pathinfo.mt_entry, fat_fd);
> - if (rc != RC_OK)
> - {
> - return rc;
> - }
> - }
> -
> - return rc;
> -}
> -
> -/* 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;
> -
> - sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
> - MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
> - if (sc != RTEMS_SUCCESSFUL)
> - rtems_set_errno_and_return_minus_one(EIO);
> -
> - rc = msdos_file_update(iop);
> -
> - 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
> @@ -174,6 +110,9 @@ msdos_file_write(rtems_libio_t *iop,const void *buffer,
> size_t count)
> if (iop->offset > fat_fd->fat_file_size)
> fat_fd->fat_file_size = iop->offset;
>
> + if (ret > 0)
> + fat_file_update_ctime_mtime(fat_fd, time(NULL));
> +
> rtems_semaphore_release(fs_info->vol_sema);
> return ret;
> }
> @@ -211,6 +150,8 @@ msdos_file_stat(
> buf->st_blocks = ((fat_fd->fat_file_size + cl_mask) & ~cl_mask)
> >> FAT_SECTOR512_BITS;
> buf->st_blksize = fs_info->fat.vol.bpc;
> + buf->st_atime = fat_fd->mtime;
> + buf->st_ctime = fat_fd->ctime;
> buf->st_mtime = fat_fd->mtime;
>
> rtems_semaphore_release(fs_info->vol_sema);
> @@ -259,8 +200,10 @@ msdos_file_ftruncate(rtems_libio_t *iop, off_t length)
> }
> }
>
> - if (rc == RC_OK) {
> + if (rc == RC_OK)
> + {
> fat_fd->fat_file_size = length;
> + fat_file_update_ctime_mtime(fat_fd, time(NULL));
> }
>
> rtems_semaphore_release(fs_info->vol_sema);
> @@ -284,13 +227,14 @@ msdos_file_sync(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->pathinfo.node_access;
>
> sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
> MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
> if (sc != RTEMS_SUCCESSFUL)
> rtems_set_errno_and_return_minus_one(EIO);
>
> - rc = msdos_file_update(iop);
> + rc = fat_file_update(&fs_info->fat, fat_fd);
> if (rc != RC_OK)
> {
> rtems_semaphore_release(fs_info->vol_sema);
> diff --git a/cpukit/libfs/src/dosfs/msdos_handlers_file.c
> b/cpukit/libfs/src/dosfs/msdos_handlers_file.c
> index dbc949f..0bea6e1 100644
> --- a/cpukit/libfs/src/dosfs/msdos_handlers_file.c
> +++ b/cpukit/libfs/src/dosfs/msdos_handlers_file.c
> @@ -23,7 +23,7 @@
>
> const rtems_filesystem_file_handlers_r msdos_file_handlers = {
> .open_h = rtems_filesystem_default_open,
> - .close_h = msdos_file_close,
> + .close_h = rtems_filesystem_default_close,
> .read_h = msdos_file_read,
> .write_h = msdos_file_write,
> .ioctl_h = rtems_filesystem_default_ioctl,
> diff --git a/cpukit/libfs/src/dosfs/msdos_init.c
> b/cpukit/libfs/src/dosfs/msdos_init.c
> index 2846dbd..a5e52f1 100644
> --- a/cpukit/libfs/src/dosfs/msdos_init.c
> +++ b/cpukit/libfs/src/dosfs/msdos_init.c
> @@ -35,6 +35,22 @@ static int
> msdos_clone_node_info(rtems_filesystem_location_info_t *loc)
> return fat_file_reopen(fat_fd);
> }
>
> +static int msdos_utime(
> + const rtems_filesystem_location_info_t *loc,
> + time_t actime,
> + time_t modtime
> +)
> +{
> + fat_file_fd_t *fat_fd = loc->node_access;
> +
> + if (actime != modtime)
> + rtems_set_errno_and_return_minus_one( ENOTSUP );
> +
> + fat_fd->mtime = modtime;
> +
> + return RC_OK;
> +}
> +
> const rtems_filesystem_operations_table msdos_ops = {
> .lock_h = msdos_lock,
> .unlock_h = msdos_unlock,
> @@ -52,7 +68,7 @@ const rtems_filesystem_operations_table msdos_ops = {
> .fsmount_me_h = rtems_dosfs_initialize,
> .unmount_h = rtems_filesystem_default_unmount,
> .fsunmount_me_h = msdos_shut_down,
> - .utime_h = rtems_filesystem_default_utime,
> + .utime_h = msdos_utime,
> .symlink_h = rtems_filesystem_default_symlink,
> .readlink_h = rtems_filesystem_default_readlink,
> .rename_h = msdos_rename,
> diff --git a/cpukit/libfs/src/dosfs/msdos_misc.c
> b/cpukit/libfs/src/dosfs/msdos_misc.c
> index 03ec38f..8223653 100644
> --- a/cpukit/libfs/src/dosfs/msdos_misc.c
> +++ b/cpukit/libfs/src/dosfs/msdos_misc.c
> @@ -380,6 +380,11 @@ msdos_find_name(
>
> fat_fd->mtime = msdos_date_dos2unix(CF_LE_W(date),
> CF_LE_W(time_val));
>
> + time_val = *MSDOS_DIR_CRT_TIME(node_entry);
> + date = *MSDOS_DIR_CRT_DATE(node_entry);
> +
> + fat_fd->ctime = msdos_date_dos2unix(CF_LE_W(date),
> CF_LE_W(time_val));
> +
> if ((*MSDOS_DIR_ATTR(node_entry)) & MSDOS_ATTR_DIRECTORY)
> {
> fat_fd->fat_file_type = FAT_DIRECTORY;
> @@ -670,12 +675,12 @@ msdos_get_dotdot_dir_info_cluster_num_and_offset(
> }
>
>
> -/* msdos_set_dir_wrt_time_and_date --
> +/* fat_file_set_time_and_date --
> * Write last write date and time for a file to the disk (to corresponded
> * 32bytes node)
> *
> * PARAMETERS:
> - * mt_entry - mount table entry
> + * fs_info - fat fs info
> * fat_fd - fat-file descriptor
> *
> * RETURNS:
> @@ -683,50 +688,69 @@ msdos_get_dotdot_dir_info_cluster_num_and_offset(
> *
> */
> int
> -msdos_set_dir_wrt_time_and_date(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> +fat_file_set_time_and_date(
> + fat_fs_info_t *fs_info,
> fat_file_fd_t *fat_fd
> )
> {
> - ssize_t ret1 = 0, ret2 = 0, ret3 = 0;
> - msdos_fs_info_t *fs_info = mt_entry->fs_info;
> + int rc = RC_OK;
> + ssize_t ret;
> uint16_t time_val;
> uint16_t date;
> uint32_t sec = 0;
> uint32_t byte = 0;
>
> - msdos_date_unix2dos(fat_fd->mtime, &date, &time_val);
> -
> /*
> * calculate input for fat_sector_write: convert (cluster num, offset) to
> * (sector num, new offset)
> */
> - sec = fat_cluster_num_to_sector_num(&fs_info->fat,
> fat_fd->dir_pos.sname.cln);
> - sec += (fat_fd->dir_pos.sname.ofs >> fs_info->fat.vol.sec_log2);
> + sec = fat_cluster_num_to_sector_num(fs_info, fat_fd->dir_pos.sname.cln);
> + sec += (fat_fd->dir_pos.sname.ofs >> fs_info->vol.sec_log2);
> /* byte points to start of 32bytes structure */
> - byte = fat_fd->dir_pos.sname.ofs & (fs_info->fat.vol.bps - 1);
> + byte = fat_fd->dir_pos.sname.ofs & (fs_info->vol.bps - 1);
> +
> + msdos_date_unix2dos(fat_fd->mtime, &date, &time_val);
>
> time_val = CT_LE_W(time_val);
> - ret1 = fat_sector_write(&fs_info->fat, sec, byte +
> MSDOS_FILE_WTIME_OFFSET,
> - 2, (char *)(&time_val));
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_WTIME_OFFSET,
> + 2, (char *)(&time_val));
> + if ( ret < 0 )
> + rc = -1;
> +
> date = CT_LE_W(date);
> - ret2 = fat_sector_write(&fs_info->fat, sec, byte +
> MSDOS_FILE_WDATE_OFFSET,
> - 2, (char *)(&date));
> - ret3 = fat_sector_write(&fs_info->fat, sec, byte +
> MSDOS_FILE_ADATE_OFFSET,
> - 2, (char *)(&date));
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_WDATE_OFFSET,
> + 2, (char *)(&date));
> + if ( ret < 0 )
> + rc = -1;
>
> - if ( (ret1 < 0) || (ret2 < 0) || (ret3 < 0) )
> - return -1;
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_ADATE_OFFSET,
> + 2, (char *)(&date));
> + if ( ret < 0 )
> + rc = -1;
>
> - return RC_OK;
> + msdos_date_unix2dos(fat_fd->ctime, &date, &time_val);
> +
> + time_val = CT_LE_W(time_val);
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_CTIME_OFFSET,
> + 2, (char *)(&time_val));
> + if ( ret < 0 )
> + rc = -1;
> +
> + date = CT_LE_W(date);
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_CDATE_OFFSET,
> + 2, (char *)(&date));
> + if ( ret < 0 )
> + rc = -1;
> +
> + return rc;
> }
>
> -/* msdos_set_first_cluster_num --
> +/* fat_set_first_cluster_num --
> * Write number of first cluster of the file to the disk (to corresponded
> * 32bytes slot)
> *
> * PARAMETERS:
> - * mt_entry - mount table entry
> + * fs_info - fat fs info
> * fat_fd - fat-file descriptor
> *
> * RETURNS:
> @@ -734,13 +758,12 @@ msdos_set_dir_wrt_time_and_date(
> *
> */
> int
> -msdos_set_first_cluster_num(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> +fat_file_set_first_cluster_num(
> + fat_fs_info_t *fs_info,
> fat_file_fd_t *fat_fd
> )
> {
> ssize_t ret1 = 0, ret2 = 0;
> - msdos_fs_info_t *fs_info = mt_entry->fs_info;
> uint32_t new_cln = fat_fd->cln;
> uint16_t le_cl_low = 0;
> uint16_t le_cl_hi = 0;
> @@ -751,17 +774,17 @@ msdos_set_first_cluster_num(
> * calculate input for fat_sector_write: convert (cluster num, offset) to
> * (sector num, new offset)
> */
> - sec = fat_cluster_num_to_sector_num(&fs_info->fat,
> fat_fd->dir_pos.sname.cln);
> - sec += (fat_fd->dir_pos.sname.ofs >> fs_info->fat.vol.sec_log2);
> + sec = fat_cluster_num_to_sector_num(fs_info, fat_fd->dir_pos.sname.cln);
> + sec += (fat_fd->dir_pos.sname.ofs >> fs_info->vol.sec_log2);
> /* byte from points to start of 32bytes structure */
> - byte = fat_fd->dir_pos.sname.ofs & (fs_info->fat.vol.bps - 1);
> + byte = fat_fd->dir_pos.sname.ofs & (fs_info->vol.bps - 1);
>
> le_cl_low = CT_LE_W((uint16_t )(new_cln & 0x0000FFFF));
> - ret1 = fat_sector_write(&fs_info->fat, sec,
> + ret1 = fat_sector_write(fs_info, sec,
> byte + MSDOS_FIRST_CLUSTER_LOW_OFFSET, 2,
> (char *)(&le_cl_low));
> le_cl_hi = CT_LE_W((uint16_t )((new_cln & 0xFFFF0000) >> 16));
> - ret2 = fat_sector_write(&fs_info->fat, sec,
> + ret2 = fat_sector_write(fs_info, sec,
> byte + MSDOS_FIRST_CLUSTER_HI_OFFSET, 2,
> (char *)(&le_cl_hi));
> if ( (ret1 < 0) || (ret2 < 0) )
> @@ -771,11 +794,11 @@ msdos_set_first_cluster_num(
> }
>
>
> -/* msdos_set_file size --
> +/* fat_set_file size --
> * Write file size of the file to the disk (to corresponded 32bytes slot)
> *
> * PARAMETERS:
> - * mt_entry - mount table entry
> + * fs_info - fat fs info
> * fat_fd - fat-file descriptor
> *
> * RETURNS:
> @@ -783,23 +806,22 @@ msdos_set_first_cluster_num(
> *
> */
> int
> -msdos_set_file_size(
> - rtems_filesystem_mount_table_entry_t *mt_entry,
> +fat_file_set_file_size(
> + fat_fs_info_t *fs_info,
> fat_file_fd_t *fat_fd
> )
> {
> ssize_t ret = 0;
> - msdos_fs_info_t *fs_info = mt_entry->fs_info;
> uint32_t le_new_length = 0;
> uint32_t sec = 0;
> uint32_t byte = 0;
>
> - sec = fat_cluster_num_to_sector_num(&fs_info->fat,
> fat_fd->dir_pos.sname.cln);
> - sec += (fat_fd->dir_pos.sname.ofs >> fs_info->fat.vol.sec_log2);
> - byte = (fat_fd->dir_pos.sname.ofs & (fs_info->fat.vol.bps - 1));
> + sec = fat_cluster_num_to_sector_num(fs_info, fat_fd->dir_pos.sname.cln);
> + sec += (fat_fd->dir_pos.sname.ofs >> fs_info->vol.sec_log2);
> + byte = (fat_fd->dir_pos.sname.ofs & (fs_info->vol.bps - 1));
>
> le_new_length = CT_LE_L((fat_fd->fat_file_size));
> - ret = fat_sector_write(&fs_info->fat, sec, byte +
> MSDOS_FILE_SIZE_OFFSET, 4,
> + ret = fat_sector_write(fs_info, sec, byte + MSDOS_FILE_SIZE_OFFSET, 4,
> (char *)(&le_new_length));
> if ( ret < 0 )
> return -1;
> --
> 1.8.4.5
>
> _______________________________________________
> devel mailing list
> devel@rtems.org
> http://lists.rtems.org/mailman/listinfo/devel
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