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2011-09-11libmtd: modify `mtd_write' to cover OOB writesBrian Norris
To support the MEMWRITE ioctl, we will need a different sort of libmtd interface for writing to flash. We will expand mtd_write to include more functionality; for now, we just change the function definition and description as we begin to add the actual functionality. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-06-08libmtd: improve mtd_islocked interfaceArtem Bityutskiy
This patch first of all, re-names 'mtd_islocked()' into 'mtd_is_locked()' since this seems to be the name Mike wanted, and it looks a bit nicer. This patch also makes 'mtd_is_locked()' print an error message if it fails. I'm not sure if it is good idea for a library to do so, but all functions do this, so it certainly _not_ a good idea to be inconsistent. However, for the special case, when the the "is locked" ioctl is not supported or is not valid for this device, we do not print an error message and return ENOTSUPP error code. Thus, the user can distinguish between real errors and non-fatal "not supported" cases. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-08libmtd: add helper funcs for getting regioninfo and locked infoMike Frysinger
This extends the libmtd with the helper functions: mtd_regioninfo: interface to MEMGETREGIONINFO mtd_islocked: interface to MEMISLOCKED Users of these functions will follow shortly ... Artem: do not print error message in mtd_islocked() Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-09-25libmtd: add lock/unlock helpersMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-07-26libmtd: add OOB read and write interfacesArtem Bityutskiy
This patch is based on Kevin Cernekee's patch posted to the MTD mailing list. It adds 'mtd_read_oob()' and 'mtd_write_oob()' interfaces support. The interfaces use MEMREADOOB64/MEMWRITEOOB64 MTD ioctls if possible, and fall-back to MEMREADOOB/MEMWRITEOOB if the 64-bit versions are not supported. The information about ioctls support is then cashed in 'offs64_ioctls' libmtd flag. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-07-26libmtd: support MEMERASE64Artem Bityutskiy
This patch is base on Kevin Cernekee's patch posted to the MTD mailing list. It adds MEMERASE64 support to the 'mtd_erase()' call. Now it first tries to use MEMERASE64, and if that is not supported, falls back to the old MEMERASE ioctl. This patch also introduces an 'offs64_ioctl' flag to the libmtd descriptor. However, we cannot initialize it in 'libmtd_open()', because we need an MTD device node, which we do not have in 'libmtd_open()'. Thus, we firs mark this flag as "uninitialized", and at the first invocation of 'mtd_erase()' we initialize it. This also means that we have to pass the limbtd descriptor to 'mtd_erase()', to save the flag value. This, in turn, requires tweaking 'mtd_erase()' users. This is not very nice, but good enough so far. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-07-13mtd-utils: move libmtd source files to lib/ subdirectoryKevin Cernekee
Source files for libmtd, crc32, and fec are scattered throughout the tree. Move them to a central location so they can be built into a common "libmtd.a" library used by all mtd-utils programs. This patch only renames/deletes files and does not change the content. Also modify the build system and source code so that libmtd.a can be built from a "common" location (lib/). Statically link all utilities at the top level with libmtd.a . Minor changes to mkfs.ubifs to allow using the common crc32 implementation. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>