Mike Frysinger [Wed, 8 May 2013 16:27:24 +0000 (12:27 -0400)]
move _GNU_SOURCE to the main makefile
A bunch of utils are relying on _GNU_SOURCE already. The new prompt code
uses getline() which is now part of POSIX, but in older versions of glibc,
it was behind _GNU_SOURCE as it was a GNU extension.
This change doesn't actually tie us to glibc. Only code that uses GNU
extensions does that. It just kills warning when using older versions of
glibc.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Mike Frysinger [Wed, 8 May 2013 16:26:13 +0000 (12:26 -0400)]
fix build errors w/newer kernel headers & glibc
Building with linux-headers-3.9 and glibc-2.17 fails like so:
In file included from summary.h:15:0,
from jffs2dump.c:37:
/usr/include/linux/uio.h:16:8: error: redefinition of 'struct iovec'
struct iovec
^
In file included from /usr/include/bits/fcntl-linux.h:38:0,
from /usr/include/bits/fcntl.h:61,
from /usr/include/fcntl.h:35,
from jffs2dump.c:25:
/usr/include/bits/uio.h:43:8: note: originally defined here
struct iovec
^
Elie De Brauwer [Fri, 1 Mar 2013 18:37:39 +0000 (19:37 +0100)]
integck.c: Fix buffer overflow in save_file
In the problem above I've spend several hours waiting for the issue to
appear, only to had the 'luck' that it was found in a file whose name was
256 bytes in length, resulting in the write to fail. Closer examination
showed that the buffer to store the path was 256 bytes in length, but this
buffer also includes /tmp and the read/write suffix and should be able to
contain a filename which is up to 255 bytes (NAME_MAX in linux/limits.h)
in size which is a bad fit. So that array is modified to FILENAME_MAX
(stdio_lim.h) and some checking is added to truncate the filename should
it cause an overflow.
The following log shows the first patch in action (see the correct seed),
and shows why this third patch is needed:
<quote>
integck: File Data:
integck: Offset: 0 Size: 1 Seed: 5008310 R.Off: 0
integck: 1 writes
integck: ============================================
integck: Write Info:
integck: Offset: 0 Size: 1 Seed: 5008310 R.Off: 0
integck: Offset: 0 Size: 1 Seed: 8246352 R.Off: 0
integck: Offset: 0 Size: 1 Seed: 5078796 R.Off: 0
integck: Offset: 0 Size: 1 Seed: 2267087 R.Off: 0
integck: Offset: 0 Size: 1 Seed: 3602680 R.Off: 0
integck: 5 writes or truncations
integck: ============================================
integck: Saving /tmp/yqcnfygfitaatyeyvffrguegcdttamcnyhowhgieljfuxfipiljsjcbluaeaghwyinkggommsbwnmvekihgnwgiibccpbwfrpxuxwkmnyghnutrudienngxwgorudbskedaaekiuiyqksfazrwzfwbfhzjjqoiulebtlpbfiuffmsnguqkjzqjqizimsmhbqqagaebjdhqwmzdxghiavtcxubegawlgtvstuqurkurpnrckjfkgostdtpg.integ.sav.readn
integck: error!: condition 'w_fd != -1' failed in save_file() at integck.c:1445
integck: error 36 (File name too long)
</quote>
Signed-off-by: Elie De Brauwer <eliedebrauwer@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Elie De Brauwer [Fri, 1 Mar 2013 18:37:38 +0000 (19:37 +0100)]
integck.c: rework file_check_data to immediately dump the buffer containing the errors
See my problem description int the previous commit, the point is that integck
in file_check_data reads a buffer, and then checks if the data is correct, it
will do a seek(0), and reread from the same fd. The point is that in the
scenario I observed integck failed (due to a buffer mismatch) but the it saved
(and what was in flash) was actually correct. So I modified this function to
dump the buffers to stderr at the moment an error is found.
Signed-off-by: Elie De Brauwer <eliedebrauwer@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Elie De Brauwer [Fri, 1 Mar 2013 18:37:37 +0000 (19:37 +0100)]
integck.c: Only verify the operation after all datastructures have been updated
<quote>
integck: File Data:
integck: Offset: 0 Size: 196 Seed: 5999877 R.Off: 0
integck: Offset: 196 Size: 33 Seed: 4160795 R.Off: 0
integck: Offset: 229 Size: 1252 Seed: 8070052 R.Off: 0
integck: Offset: 1481 Size: 612 Seed: 4160795 R.Off: 1285
integck: Offset: 2093 Size: 6 Seed: 6946586 R.Off: 0
integck: Offset: 2099 Size: 536 Seed: 4160795 R.Off: 1903
integck: Offset: 2635 Size: 1562 Seed: 9845455 R.Off: 0
integck: Offset: 4197 Size: 80 Seed: 702818 R.Off: 0
integck: Offset: 4277 Size: 115 Seed: 9845455 R.Off: 1642
integck: 9 writes
integck: ============================================
integck: Write Info:
integck: Offset: 826 Size: 357 Seed: 5908448 R.Off: 0
integck: Offset: 4197 Size: 80 Seed: 702818 R.Off: 0
...
</quote>
And I would expect the file data listing to include at offset 826 something
with a size of 357 and a seed of 5908448. Clearly it is not there (which
is already extremely confusing). The point is that file_write_info first
updates the raw_write, then verifies the data (passing the new write)
and only after that updates the write structure. But in file_check_data
only the newly written data is verified (passed as an argument) whilst
the save_file() function to dump the file uses the raw_writes to recreate
the written data (while raw_writes is only updated after after this check
would have succeeded). Several lines to say that in this patch the verify
only gets called _after_ the datastructures are updated.
Signed-off-by: Elie De Brauwer <eliedebrauwer@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Uwe Kleine-König [Thu, 28 Feb 2013 09:42:26 +0000 (10:42 +0100)]
flash_otp_write: fix a buffer overflow on NAND with write size > 2048
I'm not aware of any chip having a write size bigger than 2048 today.
Still checking for that instead of a sleeping problem to bite us maybe
in a few years is easy.
flash_otp_write might see only a single byte when reading from stdin for
the first tim. In this case (and without this patch) it pads to
$writesize with '\xff's and writes that out. In the next iteration it
reads the 2nd byte, pads and writes again. So the 2nd byte is written to
offset $writesize instead of 1.
Brian Norris [Sun, 25 Nov 2012 07:26:09 +0000 (23:26 -0800)]
ubi-tests: fix pthreads linking
Technically, '-l' linker options should be included only after the
objects which must link to the library. So when we include '-lpthread'
in the LDFLAGS variable, it gets placed too early (i.e., before the
io_paral.o object), and so the pthread linkage never occurs. The
following error probably only shows up with linkers that don't link
pthreads by default.
$ make tests V=1
...
gcc -I../../ubi-utils//include -I ../../include -lpthread -Wall -Wextra -Wwrite-strings -Wno-sign-compare -ffunction-sections -fdata-sections -Wl,--gc-sections -g -o /home/norris/git/mtd-utils/tests/ubi-tests/io_paral /home/norris/git/mtd-utils/tests/ubi-tests/io_paral.o /home/norris/git/mtd-utils/tests/ubi-tests/helpers.o libubi.a
/home/norris/git/mtd-utils/tests/ubi-tests/io_paral.o: In function `main':
/home/norris/git/mtd-utils/tests/ubi-tests/io_paral.c:287: undefined reference to `pthread_create'
/home/norris/git/mtd-utils/tests/ubi-tests/io_paral.c:295: undefined reference to `pthread_create'
/home/norris/git/mtd-utils/tests/ubi-tests/io_paral.c:303: undefined reference to `pthread_join'
collect2: ld returned 1 exit status
make[2]: *** [/home/norris/git/mtd-utils/tests/ubi-tests/io_paral] Error 1
...
$ ld --version
GNU ld (GNU Binutils for Ubuntu) 2.22
...
$ gcc --version
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
...
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Marcus Prebble [Tue, 16 Oct 2012 11:51:01 +0000 (13:51 +0200)]
mkfs.ubifs: Improve error handling of is_contained()
The is_contained() function returns -1 if an error occurs when
canonicalizing the output file path/root directory. This resulted in the
confusing error message 'Error: The output file cannot be in the UBIFS
root' when specifying a non-existent directory for the output.
This patch changes the error handling to display a different error
message for the case when is_contained() returns -1.
Additionally it frees all memory allocated by is_contained().
Signed-off-by: Marcus Prebble <marcus.prebble@axis.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Artem Bityutskiy [Wed, 10 Oct 2012 11:23:18 +0000 (14:23 +0300)]
mkfs.ubifs: rewrite path checking
We use the 'in_path()' function to check whether the output image is
withing the mkfs.ubifs root directory or not. However, this function
is not correct and it fails for the following situation, as
Marcus Prebble <marcus.prebble@axis.com> reports:
1. We have our root file-system mounted at / and want to build an image
out of it.
2. We have tmpfs mounted at /tmp
3. We mount the root file-system under /tmp/newroot
4. We run mkfs.ubifs with -r /tmp/newroot -o /tmp/image
And this fails. It fails because 'in_path()' misses this use-case.
This patch re-implements the check completely. Now we use 'realpath()'
to find canonical paths and just check that the output file is not
under the root mkfs.ubifs directory.
Reported-by: Marcus Prebble <marcus.prebble@axis.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Tested-by: Marcus Prebble <marcus.prebble@axis.com>
Richard Genoud [Wed, 12 Sep 2012 14:38:35 +0000 (16:38 +0200)]
mkfs.jffs2: correct some warnings using PRIdoff_t
When compiled with WITHOUT_LARGEFILE, there was warnings like that:
warning: format '%9llu' expects type 'long long unsigned int',
but argument 3 has type '__off_t'
Using PRIdoff_t corrects that.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Richard Genoud [Wed, 12 Sep 2012 14:37:19 +0000 (16:37 +0200)]
ubiformat: fix failure on big partitions (>4Gio)
The offset (which is 64bits when mtd-utils are not compile with
WITHOUT_LARGEFILE) is calculated like that:
offset = nb * size;
But nb and size are int, so on 32bits platforms, there's a possible
overflow.
So, it should be replace with:
offset = (off_t)nb * size;
If WITHOUT_LARGEFILE is defined, there still be an overflow, but it's
what we want, right ?
Cheney Chen tested an ubiformat on a NAND (5.9 GiB mtd part).
Richard Genoud [Wed, 22 Aug 2012 16:04:37 +0000 (18:04 +0200)]
ubiattach: fail if kernel ignores max_beb_per1024
If the kernel doesn't know the max_beb_per1024 parameter in the attach
ioctl, but the call still succeeded ubi_attach and ubi_attach_mtd will
return 1 instead of 0.
In this case, the ubiattach command will detach the device and fail with
an error message.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Richard Genoud [Wed, 22 Aug 2012 16:04:36 +0000 (18:04 +0200)]
ubiattach: introduce max_beb_per1024 in UBI_IOCATT
The ioctl UBI_IOCATT has been extended with max_beb_per1024 parameter.
This parameter is used for adjusting the "maximum expected number of
bad blocks per 1024 blocks" for each mtd device.
The number of physical erase blocks (PEB) that UBI will reserve for bad
block handling is now:
whole_flash_chipset__PEB_number * max_beb_per1024 / 1024
This means that for a 4096 PEB NAND device with 3 MTD partitions:
mtd0: 512 PEB
mtd1: 1536 PEB
mtd2: 2048 PEB
the commands:
ubiattach -m 0 -d 0 -b 20 /dev/ubi_ctrl
ubiattach -m 1 -d 1 -b 20 /dev/ubi_ctrl
ubiattach -m 2 -d 2 -b 20 /dev/ubi_ctrl
will attach mtdx to UBIx and reserve:
80 PEB for bad block handling on UBI0
80 PEB for bad block handling on UBI1
80 PEB for bad block handling on UBI2
=> for the whole device, 240 PEB will be reserved for bad block
handling.
This may seems a waste of space, but as far as the bad blocks can appear
every where on a flash device, in the worst case scenario they can
all appear in one MTD partition.
So the maximum number of expected erase blocks given by the NAND
manufacturer should be reserve on each MTD partition.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Artem Bityutskiy [Fri, 3 Aug 2012 07:01:18 +0000 (10:01 +0300)]
load_nandsim.sh: remove useless function
We do not really need a separate complex function to check if nandsim
is already loaded or not. Besides, it is safer to check /proc/mtd
in case nandsim is compiled-in.
Tomer Barletz [Tue, 26 Jun 2012 21:46:41 +0000 (14:46 -0700)]
mtd-utils: Check mtdoffset is not larger than mtd.size in case of a bad block.
mtdoffset is being tested against mtd.size in the outer two loops, but
the third nested one does not test against it.
In case of a bad block we'll try to access an out of bounds offset in
the next MEMGETBADBLOCK ioctl, which will fail with EINVAL.
In case mtdoffset is indeed larger than the partition size, we need to
bail, since there are not enough "good" blocks to complete the write.
Brian Norris [Wed, 28 Mar 2012 23:59:06 +0000 (16:59 -0700)]
Makefile: fixup previous 'make clean' fix
Apparently, Makefile comments need to be made without indentation. Otherwise,
they are printed out as shell commands. This fix prevents seeing this in your
shell during 'make clean':
$ make clean
...
# findutils v4.1.x (RHEL 4) do not have '+' syntax
...
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Brian Norris [Fri, 9 Mar 2012 17:49:09 +0000 (09:49 -0800)]
Makefile: fix "make clean" for old GNU find
findutils v4.1.x does not have the `-exec CMD {} +' syntax. We can just as
easily use the `-exec CMD {} \;' syntax. However, it will launch a lot more
`rm' processes, so we only use it if the first form fails with an error.
This isn't a perfect solution (`find -exec +' can fail for other reasons)
but it works well enough.
This problem manifests itself in RHEL 4, findutils 4.1.20:
$ make clean
rm -f /XXX/mtd-utils/*.o /XXX/mtd-utils/ftl_format ...
find: missing argument to `-exec'
make: *** [clean] Error 1
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Artem Bityutskiy [Wed, 7 Mar 2012 14:08:30 +0000 (16:08 +0200)]
mkfs.ubifs: do not ignore --max-leb-cnt when formatting an UBI volume
When the output file is an UBI volume - mkfs.ubifs just sets --max-leb-cnt
to the volume size and ignores the user-supplied --max-leb-cnt value, which
is wrong. Let's set it to the volume size only if the user did not supply
--max-leb-cnt.
Brian Norris [Wed, 8 Feb 2012 21:26:20 +0000 (13:26 -0800)]
libmtd: perform device checking first
If we don't check for the MTD before calling `legacy_get_dev_info1', we may
get errors like:
libmtd: MTD subsystem is old and does not support sysfs, so MTD character device nodes have to exist
libmtd: error!: "/dev/mtd2" is not a character device
mtdinfo: error!: libmtd failed get MTD device 2 information
error 22 (Invalid argument)
So reverse the order of these two checks.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Brian Norris [Sat, 11 Feb 2012 04:35:05 +0000 (20:35 -0800)]
libmtd: fix mtd_write() issues for large data-only writes
ioctl(MEMWRITE) is implemented with memdup_user(), and so it allocates
kernel memory in contiguous regions. This limits its usefulness for large
amounts of data, since contiguous kernel memory can become scarce. I have
experienced "out of memory" problems with ubiformat, for instance, which
writes in eraseblock-sized regions:
This error can be mitigated for now by only using ioctl(MEMWRITE) when we
need to write OOB data, since we can only do this in small transactions
anyway. Then, data-only transactions (like those originating from
ubiformat) can be carried out with write() calls.
This issue can also be solved within the kernel ioctl(), but either way,
this patch is still useful, since write() is more straightforward (and
efficient?) than ioctl() for data-only writes.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Brian Norris [Thu, 9 Feb 2012 18:13:30 +0000 (10:13 -0800)]
libmtd: fix segmentation fault on lib->mtd
Legacy systems do not initialize lib->mtd, so we shouldn't perform
strlen(lib->mtd); this produces a segmentation fault. As this code isn't
used in the legacy codepath, we can just move it down to an 'else' branch.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Artem Bityutskiy [Thu, 9 Feb 2012 18:13:29 +0000 (10:13 -0800)]
limbtd: implement mtd_dev_present for old kernels
Implement the 'legacy_dev_present()' function which will check whether an MTD
device is present by scanning the /proc/mtd file when the MTD subsystem does
not support sysfs (the case for pre-2.6.30 kernels).
This patch also moves the 'mtd_dev_present()' function to a slightly more
logical position.
Brian Norris [Fri, 27 Jan 2012 18:30:46 +0000 (10:30 -0800)]
mtdinfo: fix `--all' for non-consecutive device numbers
When we have assigned non-consecutive device numbers to our MTD devices,
then we run `mtdinfo --all', we get errors once mtdinfo tries to process
the devices in the "hole". For instance, suppose that at boot time, we have
one MTD (/dev/mtd0) then perform a sequence like the following:
Brian Norris [Thu, 26 Jan 2012 07:31:50 +0000 (23:31 -0800)]
ubinfo: fix `--all' for non-consecutive device numbers
When we have assigned non-consecutive device numbers to our UBI devices,
then we run `ubinfo --all', we get errors once ubinfo tries to process the
devices in the "hole". For instance, suppose there are two UBI devices,
/dev/ubi0 and /dev/ubi10; then, ubinfo will fail trying to open /dev/ubi1
with:
ubinfo: error!: cannot get information about UBI device 1
error 2 (No such file or directory)
This patch adds a check to first see if device is present, then continue
to the next ID if it doesn't exist.
Reported-by: Brian Foster <brian.foster@maxim-ic.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Thomas Cannon [Mon, 9 Jan 2012 16:20:53 +0000 (16:20 +0000)]
libmtd: Variable name same as function name causing compile to fail (Android)
When compiling mtd-utils against Android's bionic libc using the
supplied cross compiler environment it errors:
lib/libmtd.c: In function 'dev_node2num':
lib/libmtd.c:444: error: called object 'major' is not a function
lib/libmtd.c:445: error: called object 'minor' is not a function
lib/libmtd.c: In function 'mtd_probe_node':
lib/libmtd.c:1384: error: called object 'major' is not a function
lib/libmtd.c:1385: error: called object 'minor' is not a function
This patch updates the variable names for "major" and "minor" in two
places. It then compiles cleanly.
Artem: pick different names, also rename major1/minor1 variables for
consistency.
Signed-off-by: Thomas Cannon <mail at thomascannon.net> Cc: linux-mtd at lists.infradead.org
Brian Norris [Fri, 9 Dec 2011 19:45:14 +0000 (11:45 -0800)]
libmtd: allow write operations when MEMWRITE is not supported
MEMWRITE is a recently introduced write interface for MTD; however, it
is only supported on NAND flash. mtd-utils should fall back to
old write methods when either ENOTTY or EOPNOTSUPP are returned.
This is a showstopper when, for instance, using ubiformat on NOR, which
don't have a mtd->write_oob interface (and thus don't support MEMWRITE):
Brian Norris [Fri, 2 Dec 2011 17:46:12 +0000 (09:46 -0800)]
nandtest: seed random generator with time
If a seed is not provided via --seed, we use the default rand() values,
which produces the same sequence of values every run. Since this is
undesirable, we should choose a random seed via the current time().
Note that this patch moves the srand() until after all the initial
options processing.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
Mike Frysinger [Sat, 19 Nov 2011 21:02:03 +0000 (16:02 -0500)]
Makefile: separate man page install and compression steps
If the system doesn't have gzip installed, we should still be able
to install the man pages. So install the file in one step, and then
compress it in another (and ignore failures from that).
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
Artem Bityutskiy [Sat, 19 Nov 2011 20:38:50 +0000 (22:38 +0200)]
1.4.8 release
Unfortunately I forgot to update the version in Makefile and tagged v1.4.7.
To fix this, I could not invent anything better than cut a new release 1.4.8.
Brian Norris [Wed, 16 Nov 2011 20:03:57 +0000 (12:03 -0800)]
mtdinfo: provide info when used without arguments
If the user specifies neither a MTD argument nor the `-a' flag, we print
a cryptic message; i.e.,
# mtdinfo
libmtd: error!: cannot get information about "(null)"
error 14 (Bad address)
mtdinfo: error!: cannot get information about MTD device "(null)"
error 14 (Bad address)
This is a regression; previously, mtdinfo would give some short info
about number of devices, etc. when used without arguments. To fix this,
we revert commit d53c03b0989f8354a7e4dbb947a150fc7fe3f6d1 and call
print_general_info() when no device is specified.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
This issue was reported and analyzed by
Anton Olofsson <anol.martinsson@gmail.com>:
when ubiformat encounters a write error while flashing the UBI image (which may
come from a file of from stdout), it correctly marks the faulty eraseblock as
bad and skips it. However, it also incorrectly drops the data buffer which was
supposed to be written, and reads next block of data.
This patch fixes this issue - in case of a write error, we preserve the current
data and write it to the next eraseblock, instead of dropping it.
Brian Norris [Wed, 31 Aug 2011 20:00:38 +0000 (13:00 -0700)]
nandwrite: re-implement `--autoplace' option
The restructuring of mtd_write() has allowed us to use `--autoplace'
somewhat successfully; it is supported by the new ioctl(MEMWRITE) as
well as some legacy code utilizing the deprecated ioctl(MEMGETOOBSEL).
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Brian Norris [Wed, 31 Aug 2011 20:00:37 +0000 (13:00 -0700)]
nandwrite: kill `--raw' option
The `--raw' option has lost all usefulness as it overlapped with several
other OOB modes. I cannot even figure out what it was actually intended
to do, but I'm sure its functionality fits somewhere in the
MTD_OPS_{AUTO_OOB,PLACE_OOB,RAW} options, which are mostly implemented
in libmtd's mtd_write().
I don't think users need a warning for this one, unless someone can tell
me what it actually was supposed to have done in the first place.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Brian Norris [Wed, 31 Aug 2011 20:00:36 +0000 (13:00 -0700)]
mtdutils: move OOB auto-layout into libmtd's mtd_write
With the addition of the the new ioctl(MEMWRITE), we can use the
kernel's internal OOB autoplacement option. It's a cleaner interface and
avoids too much duplication of coding effort.
This patch moves any legacy code (using MEMGETOOBSEL) into a legacy
function in libmtd.c. It's not exactly a "pre-2.6.30" feature, so I'm not
moving it to libmtd_legacy.c.
Now, autoplacement features are only activated if we call mtd_write with
mode == MTD_OPS_AUTO_OOB. This should fix some discrepancies for
nandwrite, where we weren't handling OOB consistently (i.e., we had
different functionality when the kernel did/didn't support MEMWRITE).
But that also means that we now default to using MTD_OPS_PLACE_OOB
instead of AUTO layout. To re-enable autoplacement, we can re-implement
the `--autoplace' option that had previously rotted.
This patch also cleans up a need for an extra OOB buffer in nandwrite.
This has been tested a little in nandsim as well as on SLC NAND flash.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Brian Norris [Wed, 31 Aug 2011 20:00:34 +0000 (13:00 -0700)]
libmtd: support MEMWRITE ioctl
`mtd_write()' now will first attempt to use MEMWRITE. Then, if that
doesn't exist, it will attempt to fall back to old methods for writing
OOB and/or page data.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
projects / mtd-utils.git / log