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drivers/bch: The character driver to block device access now supports an IOCTL to get the geomtry of the underlying block device.

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This commit is contained in:
Gregory Nutt
2017-10-20 11:36:26 -06:00
parent 704ad2faeb
commit fc0a5e19d0
2 changed files with 76 additions and 34 deletions
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include/nuttx/fs/ioctl.h
+10 -2
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@@ -218,19 +218,27 @@
* buffer address
* OUT: None (ioctl return value provides
* success/failure indication). */
#define BIOC_GETPROCFSD _BIOC(0x000A) /* Get ProcFS data specific to the
#define BIOC_GETPROCFSD _BIOC(0x000a) /* Get ProcFS data specific to the
* block device.
* IN: Pointer to a struct defined for
* the block to load with it's
* ProcFS data.
* OUT: None (ioctl return value provides
* success/failure indication). */
#define BIOC_DEBUGCMD _BIOC(0x000B) /* Send driver specific debug command /
#define BIOC_DEBUGCMD _BIOC(0x000b) /* Send driver specific debug command /
* data to the block device.
* IN: Pointer to a struct defined for
* the block with specific debug
* command and data.
* OUT: None. */
#define BIOC_GEOMETRY _BIOC(0x000c) /* Used only by BCH to return the
* geometry of the contained block
* driver.
* IN: Pointer to writable instance
* of struct geometry in which
* to return geometry.
* OUT: Data return in user-provided
* buffer. */
/* NuttX MTD driver ioctl definitions ***************************************/