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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>
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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>
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The external lzo dep can be a pain to deal with when cross-compiling,
so make it optional for jffs2. This is useful if people aren't even
using the functionality, or for quicker development.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Artem: tweak the warning message
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Usage/version information should go to stdout when it is expected behavior
(i.e. the user requested it explicitly). This info should go to stderr
only when the usage info is being shown as a result of incorrect options.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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... because mtd device node name do not have to follow the "/dev/mtd%d"
pattern.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Not strictly necessary, but this is good library behavior and
should carry no runtime overhead.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Linux FLAT toolchains produce .gdb files alongside the normal program
for debugging purposes (so linking to "foo" will also produce "foo.gdb").
Ignore these too.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This basically reverts commit 43feb39f35a9ee0ed3 which changed the full
length calculation to be one less than one sector. I don't understand
the logic in the commit message where it states that the length should
be one sector smaller as this results in misbehavior at runtime.
For example, with a mtd device with total size 0x400000 and erase block
size of 0x20000 (which gives us a total of 32 sectors), this new logic
results in:
mtdLockInfo.start = 0;
mtdLockInfo.length = 0x3e0000; /* (32 - 1) * 0x20000 */
Calling MEMLOCK/MEMUNLOCK on the device with this range leaves the last
sector unchanged which is certainly not what we want. So drop this -1
part of the calculation.
To look at it another way, if we only attempt to lock one sector, this
calculation would end up with the .length set to 0. Calling MEMLOCK
with a length of 0 does not lock the sector as this simple code shows:
int main(int argc, char *argv[]) {
erase_info_t e0 = { 0, 0 }, e1 = { 0, 0x20000 };
int fd = open(argv[1], O_RDONLY);
ioctl(fd, MEMUNLOCK, &e1);
printf("%i\n", ioctl(fd, MEMISLOCKED, &e1));
ioctl(fd, MEMLOCK, &e0);
printf("%i\n", ioctl(fd, MEMISLOCKED, &e1));
}
MEMISLOCKED returns 0 both times. If we change the argument to MEMLOCK
to e1, then MEMISLOCKED returns 1.
Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Now that the utils have equivalent functionality, merge the two source
code bases so they can't diverge in the future.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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The flash_lock util has a bit of extra argument checking, and it supports
a magic value of "-1" to mean "all blocks".
The flash_unlock util supports automatic 2nd/3rd arguments to unlock the
whole flash. It also supports multiple bases (not just hex) for selecting
the range of the device to unlock.
So tweak both utilities so that they have equivalent functionality again
by adding the missing features to each.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch adds a new option "--skipbad" to nanddump. It is subtly
different than "--omitbad". The following description was included in
the help message to attempt to clarify the differences.
Notes on --omitbad and --skipbad:
With either option, we stop dumping data when we encounter a bad block
and resume dumping at the next good block. However, with --omitbad, we
count the bad block as part of the total dump length, whereas with
--skipbad, the bad block is 'skipped,' that is, not counted toward the
total dump length.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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In commit 04665066ebedb0a31335b525fb5f19df32cb8cfe it was noted that the free
space fixup feature would be available in kernels 2.6.40 or greater. Since
then it has been decided that the release following 2.6.39 will be 3.0.
Replace the instances of 2.6.40 with 3.0.
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Commit 924862c864da0b62cf93ba7abf2dc78a7e6ac48f broke ubimkvol parrameters
parsing by initializing the 'error' parameter of 'simple_strtoul()' to 1
instead of 0. This patch fixes the issue.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Currently pcv macro print the error message only if we are not doing power cut
testing or if we have -v flag. But if we run without -v and an error happen
and the error code is not EROFS/EIO, pcv() does not print anything. This patch
makes it print the error message in that case as well.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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The 'file_new()' function should create a file but should not keep it
open. There is a different path to open files and keep them open. This
patch makes 'file_new()' close newly created files.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch makes the directory checking in case of power cut emulation
actually work. There were many bugs. Basically, we cannot rely on anything
unless the directory is marked as clean.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Make -v switch control verbose integck output.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Check the clean data after every emulated power cut, not only when
'create_test_data()'/'update_test_data()' succeed. This required some minor
re-work.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Add a helper 'sync_directory()' function to synchronize directories.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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In 'dir_check()' print name of the directory if we fail to open it.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Currently when we are doing UBIFS power cut emulation testing we assume that
EROFS is returned in case of an emulated power cut event. However, this is
not true and sometimes Linux returns EIO to user-space instead. Namely, this
happens when we are waiting for write-back to finish. Here is a call trace
form kernel 2.6.39-rc7:
Call Trace:
[<ffffffff810aaa77>] filemap_write_and_wait_range+0x78/0xb1
[<ffffffff8110f34d>] vfs_fsync_range+0x38/0xd3
[<ffffffff8110f42b>] generic_write_sync+0x43/0x65
[<ffffffff810ab0c9>] generic_file_aio_write+0xaa/0xf2
[<ffffffffa02224c9>] ubifs_aio_write+0x13a/0x1a1 [ubifs]
[<ffffffff810ed71f>] do_sync_write+0xcb/0x141
[<ffffffff810ee016>] vfs_write+0xb0/0x150
[<ffffffff810ee175>] sys_write+0x48/0x72
[<ffffffff813e0692>] system_call_fastpath+0x16/0x1b
'filemap_fdatawait_range()' returns hard-coded -EIO if a page write-back
happens with whatever error code.
Thus, this patch teaches integck to handle EIO when doing power cut emulation
testing.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch adds -m <mtdnum> option to integck and teaches integck to re-attach
the MTD device to UBI in case of an emulated power cut event. This is needed
for the new UBI power cut and unstable bits emulation infrastructure: when UBI
emulates a power cut the only way to recover form this is to re-attach the MTD
device.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This adds a superblock flag indicating that "free-space fixup" is needed, and
allows it to be set by the user via the "-F" command-line option. The first
time the filesystem is mounted, this flag will trigger a one-time re-mapping of
all LEBs containing free space. This fixes problems seen on some NAND flashes
when a non-UBIFS-aware flash programmer is used.
Artem: add a bit more help text, tweaked the patch a bit.
Thanks to Ben Gardiner <bengardiner@nanometrics.ca> for help.
Signed-off-by: Matthew L. Creech <mlcreech@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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When we are in power cut mode read all files after re-mounting. This will
check that FS recovery worked well and all files are readable after recovery.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Currently we always verify holes when truncating, but we have -v switch for
this and should do this only if -v was given.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Call 'fsync()' for directories sometimes as well, and check synchronized
directories after re-mount - cound of directory entries has to be correct.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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If 'fsync()' or 'fdatasync()' fail we have to return an error, but we by
mistake were returning 0 (success).
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Currently integck calls 'fsync()' very rarely - with 0.1% probability. Make
this happen more often - with 1% probability.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Allow verification for clean files, i.e. the files which had been fsync()'ed
before the emulated power cut happened.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Make the verify option -v work with power cut emulation option -e. We can
verify all operations except of writing to the file, because of write-back.
Indeed, even if we write successfully, the pages may still be in the page-cache
and if an emulated power cut happens they will be dropped, and our verification
will fail.
I am not 100% sure it is save to verify non-write operation in other FSes, but
only UBIFS has power cut emulation mode now, so we do not really care about
other FSes at this point.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Enable directory entry checking in power cut mode. This means that with this
patch integck will check that all directory entries in the file-system were
created by integck.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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All errors but write errors have corresponding CHECK(), so if something
gets wrong we fail. But in case of I/O errors we do not fail if an
unexpected error happens, which makes it difficult to trace issues.
Inject the errno checking to the pvc macro to make sure we fail if
errno is not EROFS.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Commit 1394a46213e8180e1233ca6d4811e7c77d49b1e0 was a good idea, but it
introduced a segfault - files can be unlinked and 'file->links' is NULL, it is
bad idea to unconditionally dereference it with 'file->links->name'. This patch
introduces a helper function which takes care of the situation with unlinked
files, plus it adds few assertions.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Introduce per-file "clean" flag which tells whether the file is synchronized or
not. This flag is not really used so far.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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In pcv() messages also print the error number - this is useful when
an error happens and it is not because of EROFS.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This is just a preparation - re-structure 'file_write()' to make one "success"
return point - we'll add synchronization stuff there. Also, while on it, make
it delete the file errored in truncation, not only in write. Also, move
the fsync() call to this function because it is common to all write paths.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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I observes segfaults in integck test, and unfortunately I do not have the core
file to investigate the problem. But I see one possibility for the test to
segfault - it has unbounded recursion. Limit the maximum recursion depth.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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If we are not in power cut testing mode (-p was not used) and we get an
unexpected EROFS, we silently exit. This patch fixes this behavior and make
the test loudly fail instead.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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The test sometimes dies due to SIGBUS because a power cut event happens when
we are writing to an mmap()'ed area. SIGBUS is very difficult to ignore, so
fix the issue simply by avoiding doing 'mmap()' operations when in power cut
testing mode.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Similarly to the previous commit, do not verify operations when in
power-cut testing mode. Again, this is because write-back may fail
meanwhile.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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In 'check_failed()' use the file and line number provided by the CHECK()
macro via the function parameters, rather than using __LINE__ directly.
Otherwise the funtion prints its own line, instead of the line where the
CHECK() failed.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Do not check the file-system when we are in power cut mode. Currently
we still check the FS if we did not encounter any error, and the test
fails sometimes because meanwhile write-back encounters an error and
drops pages. Disable the checking so far. It should be enabled when
we implement the 'clean' flag for files.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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