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Add NXFFS ioctls

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3566 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-05-05 20:01:43 +00:00
parent 4aa6da9344
commit 77d4700a62
2 changed files with 48 additions and 4 deletions
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44
fs/nxffs/nxffs_ioctl.c
View File

@ -47,6 +47,7 @@
#include <debug.h>
#include <nuttx/fs.h>
#include <nuttx/ioctl.h>
#include <nuttx/mtd.h>
#include "nxffs.h"
@ -82,6 +83,7 @@
int nxffs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR struct nxffs_volume_s *volume;
int ret;
fvdbg("cmd: %d arg: %08lx\n", cmd, arg);
@ -94,7 +96,45 @@ int nxffs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
volume = filep->f_inode->i_private;
DEBUGASSERT(volume != NULL);
/* No ioctl commands yet supported */
/* Get exclusive access to the volume. Note that the volume exclsem
* protects the open file list.
*/
return -ENOTTY;
ret = sem_wait(&volume->exclsem);
if (ret != OK)
{
ret = -errno;
fdbg("sem_wait failed: %d\n", ret);
goto errout;
}
/* Only a reformat command is supported */
if (cmd == FIOC_REFORMAT)
{
fvdbg("Reformat command\n");
/* We cannot reformat the volume if there are any open inodes */
if (volume->ofiles)
{
fdbg("Open files\n");
ret = -EBUSY;
goto errout_with_semaphore;
}
/* Re-format the volume -- all is lost */
ret = nxffs_reformat(volume);
goto errout_with_semaphore;
}
/* No other commands supported */
ret = -ENOTTY;
errout_with_semaphore:
sem_post(&volume->exclsem);
errout:
return ret;
}

8
include/nuttx/ioctl.h
View File

@ -94,17 +94,21 @@
* return (void*) base address
* of file
*/
#define FIOC_REFORMAT _FIOC(0x0002) /* IN: None
* OUT: None
*/
/* NuttX file system ioctl definitions */
#define _DIOCVALID(c) (_IOC_TYPE(c)==_DIOCBASE)
#define _DIOC(nr) _IOC(_DIOCBASE,nr)
#define DIOC_GETPRIV _DIOC(0x0001) /* IN: Location to return handle (void **)
#define DIOC_GETPRIV _DIOC(0x0001) /* IN: Location to return handle (void **)
* OUT: Reference to internal data
* structure. May have a reference
* incremented.
*/
#define DIOC_RELPRIV _DIOC(0x0003) /* IN: None
#define DIOC_RELPRIV _DIOC(0x0003) /* IN: None
* OUT: None, reference obtained by
* FIOC_GETPRIV released.
*/