On 2014-06-17 11:08, Chris Johns wrote:
On 17/06/2014 6:51 pm, Sebastian Huber wrote:
On 2014-06-16 21:56, Chris Johns wrote:
On 14/06/2014 2:00 am, Sebastian Huber wrote:
Module: rtems
Branch: master
Commit: 73bf499ce7710ff8e75833042f88d1ff5b3e84fa
Changeset:
http://git.rtems.org/rtems/commit/?id=73bf499ce7710ff8e75833042f88d1ff5b3e84fa
Author: Sebastian Huber <sebastian.hu...@embedded-brains.de>
Date: Tue Jun 10 10:56:55 2014 +0200
JFFS2: Add device identifier for the flash device
It is used in combination with the inode number to uniquely identify a
file system node in the system.
---
cpukit/libfs/src/jffs2/include/rtems/jffs2.h | 11 ++++++++++-
cpukit/libfs/src/jffs2/src/fs-rtems.c | 7 +++++--
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
b/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
index e69fc20..7b2f4d5 100644
--- a/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
+++ b/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
@@ -118,7 +118,8 @@ typedef struct rtems_jffs2_flash_control
rtems_jffs2_flash_control;
* .flash_size = FLASH_SIZE,
* .read = flash_read,
* .write = flash_write,
- * .erase = flash_erase
+ * .erase = flash_erase,
+ * .device_identifier = 0xc01dc0fe
I cannot see anything that describes what this field is to contain. A
number is
a bit cryptic. Is this specific to a flash driver, all drivers, or
something
else ?
I cannot find the flash driver used here so maybe a comment about this
and
where to find it would also help.
The description is here:
@@ -265,6 +266,14 @@ struct rtems_jffs2_flash_control {
* This operation is optional and the pointer may be @c NULL.
*/
rtems_jffs2_flash_destroy destroy;
+
+ /**
+ * @brief The device identifier of the flash device.
+ *
+ * It is used in combination with the inode number to uniquely
identify a
+ * file system node in the system.
+ */
+ dev_t device_identifier;
};
typedef struct rtems_jffs2_compressor_control
rtems_jffs2_compressor_control;
Due to the dev_t type it should be clear what it is.
Is there an example driver in the RTEMS source tree ?
Yes, here:
http://www.rtems.org/onlinedocs/doxygen/cpukit/html/group__JFFS2.html
and here:
http://git.rtems.org/rtems/tree/testsuites/fstests/jffs2_support/fs_support.c
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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