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Misc. changes to support FAT32 fileysystem

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@219 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-05-13 20:20:07 +00:00
parent d8df31f3d8
commit b6335e8ef7
5 changed files with 39 additions and 29 deletions
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1
ChangeLog
View File

@ -129,5 +129,6 @@
development board (untested)
* Added support for block devices.
* Simulated target now exports a VFAT filesystem
* Begin support for VFAT filesystem (not yet functional)
* Added mount() and umount()
* Started m68322

4
Documentation/NuttX.html
View File

@ -8,7 +8,7 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
<p>Last Updated: May 12, 2007</p>
<p>Last Updated: May 13, 2007</p>
</td>
</tr>
</table>
@ -508,9 +508,9 @@ Other memory:
development board (untested)
* Added support for block devices.
* Simulated target now exports a VFAT filesystem
* Begin support for VFAT filesystem (not yet functional)
* Added mount() and umount()
* Started m68322
* Added support for the NXP 214x processor on the mcu123.com lpc214x
</pre></ul>
<table width ="100%">

31
arch/sim/src/up_blockdevice.c
View File

@ -60,13 +60,13 @@
* Private Function Prototypes
****************************************************************************/
static int up_open(FAR struct file *filp);
static int up_close(FAR struct file *filp);
static ssize_t up_read(FAR struct file *filp, char *buffer,
static int up_open(FAR struct inode *inode);
static int up_close(FAR struct inode *inode);
static ssize_t up_read(FAR struct inode *inode, unsigned char *buffer,
size_t start_sector, size_t nsectors);
static ssize_t up_write(FAR struct file *filp, const char *buffer,
static ssize_t up_write(FAR struct inode *inode, const unsigned char *buffer,
size_t start_sector, size_t nsectors);
static size_t up_geometry(FAR struct file *filp, struct geometry *geometry);
static int up_geometry(FAR struct inode *inode, struct geometry *geometry);
/****************************************************************************
* Private Data
@ -92,7 +92,7 @@ static const struct block_operations g_bops =
*
****************************************************************************/
static int up_open(FAR struct file *filp)
static int up_open(FAR struct inode *inode)
{
return OK;
}
@ -104,7 +104,7 @@ static int up_open(FAR struct file *filp)
*
****************************************************************************/
static int up_close(FAR struct file *filp)
static int up_close(FAR struct inode *inode)
{
return OK;
}
@ -116,10 +116,9 @@ static int up_close(FAR struct file *filp)
*
****************************************************************************/
static ssize_t up_read(FAR struct file *filp, char *buffer,
static ssize_t up_read(FAR struct inode *inode, unsigned char *buffer,
size_t start_sector, size_t nsectors)
{
struct inode *inode = filp->f_inode;
if (inode)
{
char *src = inode->i_private;
@ -143,10 +142,9 @@ static ssize_t up_read(FAR struct file *filp, char *buffer,
*
****************************************************************************/
static ssize_t up_write(FAR struct file *filp, const char *buffer,
static ssize_t up_write(FAR struct inode *inode, const unsigned char *buffer,
size_t start_sector, size_t nsectors)
{
struct inode *inode = filp->f_inode;
if (inode)
{
char *dest = inode->i_private;
@ -170,14 +168,15 @@ static ssize_t up_write(FAR struct file *filp, const char *buffer,
*
****************************************************************************/
static size_t up_geometry(FAR struct file *filp, struct geometry *geometry)
static int up_geometry(FAR struct inode *inode, struct geometry *geometry)
{
struct inode *inode = filp->f_inode;
if (geometry)
{
geometry->geo_available = (inode->i_private != NULL);
geometry->geo_nsectors = NSECTORS;
geometry->geo_sectorsize = LOGICAL_SECTOR_SIZE;
geometry->geo_available = (inode->i_private != NULL);
geometry->geo_mediachanged = FALSE;
geometry->geo_writeenabled = TRUE;
geometry->geo_nsectors = NSECTORS;
geometry->geo_sectorsize = LOGICAL_SECTOR_SIZE;
return OK;
}
return -EINVAL;

3
configs/sim/defconfig
View File

@ -198,7 +198,8 @@ CONFIG_PREALLOC_TIMERS=8
#
# FAT filesystem configuration
# CONFIG_FAT - Enable FAT filesystem support
# CONFIG_FS_FAT - Enable FAT filesystem support
# CONFIG_FAT_SECTORSIZE - Max supported sector size
CONFIG_FS_FAT=y
#

29
include/nuttx/fs.h
View File

@ -81,25 +81,30 @@ struct file_operations
struct geometry
{
boolean geo_available; /* False if the device is not available */
size_t geo_nsectors; /* Number of sectors on the device */
size_t geo_sectorsize; /* Size of one sector */
boolean geo_available; /* TRUE: The device is vailable */
boolean geo_mediachanged; /* TRUE: The media has changed since last query */
boolean geo_writeenabled; /* TRUE: It is okay to write to this device */
size_t geo_nsectors; /* Number of sectors on the device */
size_t geo_sectorsize; /* Size of one sector */
};
/* This structure is provided by block devices when they register with the
* system. It is used by file systems to perform filesystem transfers.
* system. It is used by file systems to perform filesystem transfers. It
* differs from the normal driver vtable in several ways -- most notably in
* that it deals in struct inode vs. struct filep.
*/
struct inode;
struct block_operations
{
int (*open)(FAR struct file *filp);
int (*close)(FAR struct file *filp);
ssize_t (*read)(FAR struct file *filp, char *buffer,
int (*open)(FAR struct inode *inode);
int (*close)(FAR struct inode *inode);
ssize_t (*read)(FAR struct inode *inode, unsigned char *buffer,
size_t start_sector, size_t nsectors);
ssize_t (*write)(FAR struct file *filp, const char *buffer,
ssize_t (*write)(FAR struct inode *inode, const unsigned char *buffer,
size_t start_sector, size_t nsectors);
size_t (*geometry)(FAR struct file *filp, struct geometry *geometry);
int (*ioctl)(FAR struct file *, int, unsigned long);
int (*geometry)(FAR struct inode *inode, struct geometry *geometry);
int (*ioctl)(FAR struct inode *inode, int cmd, unsigned long arg);
};
/* This structure is provided by a filesystem to describe a mount point.
@ -135,6 +140,10 @@ struct mountpt_operations
int (*bind)(FAR struct inode *blkdriver, const void *data, void **handle);
int (*unbind)(void *handle);
/* NOTE: More operations will be needed here to support: disk usage stats, stat(),
* sync(), unlink(), mkdir(), chmod(), rename(), etc.
*/
};
/* This structure represents one inode in the Nuttx psuedo-file system */