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2022-03-28nandwrite: warn about writing 0xff blocksRafał Miłecki
Such blocks may be incorrectly treated as empty (even though they may have non-erase OOB). Warn about it so people may start useing --skip-all-ffs . Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-01-20Fix test binary installationDavid Oberhollenzer
- Remove "install tests" configure option, we already have an option whether to build tests or not. Don't try to work around autotools semantics that people building the package expect. - Fix the installation path by propperly defining it and using the correct name for the libexec path. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-01-20Cleanup: Automake: remove single use variablesDavid Oberhollenzer
Throughout the Automake files, there is a consistent pattern somewhat like this: FOO_BINS = .... sbin_PROGRAMS += $(FOO_BINS) This commit all such patterns whenever the variable is not used anywhere else and appends to the target directly. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-01-20Remove headers from EXTRA_DISTDavid Oberhollenzer
This commit removes the C header files from the EXTRA_DIST variables and instead assigns them to the SOURCE variable of the respective components they belong to. This takes care of having them distributed in the release tar ball and helps with dependency tracking a little. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-10-18mtd-utils: Add nandflipbits toolBoris Brezillon
The nandflipbits tool is intended to be used when one need to flip one or several specific bits on a NAND media. It can be useful to manually recover from an unexpected bit flip on a flash device, though the main purpose of this tool is to provide a way to test ECC algorithms robustness. One typical example I used this tool for is testing HW ECC engines behavior when bitflips occur in an erased page: most HW engines do not correctly handle this case, because, most of the time, ECC bits generated for an empty page are not all 1s, and, empty page detection embedded in such engines is only validating that all bits are set to 1s (which is not true when a bit-flip has occurred). Another use of this tool is replacing nandbiterrs test which absolutely do not work with MLC-like chips because of the rewriting of the pages in raw mode to toggle ones into zeroes. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> [miquel: Took Boris' work from 2014, addressed comments from Brian made in 2015, updated it, tested more extensively and fixed issues] Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-09mtd-utils: Fix wrong argument to sizeof in nanddumpDavid Oberhollenzer
Some temporary buffers are allocated with "sizeof(pointer) * count" as size argument, which cannot possibly be correct. Assuming what was meant was "sizeof(pointer[0]) * count" makes sense in the context of how the buffers are used, but is actually pretty pointless, since the buffers are unsigend char. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-09mtd-utils: Fix potential negative arguments passed to close(2)David Oberhollenzer
Many tools open a file descriptor, close it a the end and have some form of error path in between that jumps to the end. In some cases, if opening the file fails the error path is taken and the utility ends up closing one or more invalid file descriptors. It's technically not a real issue but something that pretty much any static analysis tool barks at. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-10nanddump: don't leak copied command line argumentsDavid Oberhollenzer
For some command line flags, the argument string is copied. Simply writing over the buffer leads to a resource leak if the same flag is specified on the command line more than once. This patch adds a free() call to the old buffer before overwriting it with the new copy. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-02Mark or fix switch cases that fall throughDavid Oberhollenzer
Now that C++17 introduced a special fallthrough keyword for explicitly tagging switch cases that are supposed to fall through, newer gcc versions also implement a feature request from 2002 to warn about maybe unwanted fall-throughs in switch cases in other languages (like C). For C code, we can either add a gcc specific attribute at the end of the switch case, or use a special comment that gcc checks for, indicating that the fall-through behaviour is indeed intended. This patch adds a "/* fall-through */" comment at the end of various case blocks to silence gcc warnings and in some cases a break, where fall-through was probably not intended. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-02Add no-return attribute to usage() style functionsDavid Oberhollenzer
A common pattern in command line processing is having a usage() function that prints out how to use the command line options and then terminates. The function is typically used inside a switch block for command line options like `-h' or unknown options. In a lot of places, the break keyword is omitted, because the function exits anyway. However, this triggers gcc warnings about implicit fall-through. Rather than adding a phony "/* fall-through */" this patch flags the usage() style function with a gcc attribute, indicating that they do not return and removes further superfluous break statements. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-06-28Remove unused variables and functionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-06-28Eliminate warnings about missing prototypesDavid Oberhollenzer
This patch eliminates warnings generated by the -Wmissing-prototypes option. With this flag set, we are now forced to have prototypes for all global, exported functions, that have to be made visible to the definitions and we are forced to mark all local functions as static. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-06-14Use defines for exit code valuesDaniel Wagner
Make the usage of exit consist. That is use the pre defined exit values. Signed-off-by: Daniel Wagner <daniel.wagner@siemens.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-01-18nanddump: Add --skip-bad-blocks-to-start optionMike Crowe
The --skip-bad-blocks-to-start option will increase the start address by the size of each bad block encountered between the start of the partition and the specified start address. This can be useful if other readers of the partition will be reading using a simple bad-block-skipping algorithm. Signed-off-by: Mike Crowe <mac@mcrowe.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-01-18nandwrite: Add --skip-bad-blocks-to-start optionMike Crowe
The --skip-bad-blocks-to-start option will increase the seek offset by the size of each bad block encountered between the start of the partition and the specified start address. This can be useful when writing part way through a partition that will be read using a simple bad-block-skipping algorithm. Signed-off-by: Mike Crowe <mac@mcrowe.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-01-12nandwrite: fix/cleanup bad block skippingDavid Oberhollenzer
JFFS2 supports clustering erase blocks to virtual erase blocks. nandwrite supports this, but previously mixed up virtual and physical erase block numbers when checking for bad blocks. This patch adds a function for checking if a virtual erase block is bad and replaces the broken mtd_is_bad loop. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-01-12nandwrite: replace erase loop with mtd_erase_multiDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-01-12nandwrite: add stricter sanity checking for blockalignDavid Oberhollenzer
This patch makes sure that a virtual erase block is always composed of a postivie number of erase blocks (i.e. 1 or more) and enforces the block alignment to be a power of two as suggested by the help text and assumed throughout the program. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2016-12-09nandwrite: Factor out buffer checking codeMarek Vasut
Pull the buffer content checking code into separate function and simplify the code invoking it slightly. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2016-12-06common: Fix 'unchecked return code' warningsBoris Brezillon
Several tools are simply not checking return code of functions marked with 'warn_unused_result'. Provide wrappers for the read/write functions to avoid patching old code and providing proper error handling. Fix the remaining ones (calls to fgets() and system()). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-12-06nandwrite: add skip-all-ff-pages-optionKees Trommel
Signed-off-by: Kees Trommel <ctrommel@linvm302.aimsys.nl> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2016-11-17Unify version string printingDavid Oberhollenzer
When a program does sophisticated enough command line processing (i.e. getopt), make sure it responds to -V and --version. When a program prints a version string, make sure it uses the common_print_version macro to print out its name, that it is part of mtd-utils and the mtd-utils version from the build system in a fashion similar to common program packages like the GNU coreutils. When a program responds to -V/--version or -h/--help, make sure it reports success exit status. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17Integrate tests into autotools build systemDavid Oberhollenzer
Add automake files for the test binaries. If configured to do so, install the test binaries to libexec/mtd-utils and use autoconf to fix the paths in the test scripts. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17Change build system to autotoolsRichard Weinberger
This patch is largely based on Richards original RFC. The major differences to the RFC patch are: - Add missing sumtools & mtdpart targets - Fix name of mkfs.jffs2 target - Add missing subdir-objects option for non-recursive make - Move all automake options to configure.ac - Add manpages to install target - Make XATTR & LZO support configurable - Install binaries to sbin directory like in the old build system - Install flash_erase wrapper script - Add files missing from distribution target Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17nanddump: check write function result for errorsRafał Miłecki
Errors may happen, it's e.g. easy on embedded devices to run out of space when dumping big partitions. This patch adds a helper function for writing. It deals with partial writes and just returns 0 on success or error number. The old code didn't check for errors at all which could result in incomplete dumps without exiting with an error. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-25mtd-utils: nanddump: write requested length onlyGary Bisson
nanddump was always writing a whole page of data into the output discarding the length actually requested. This patch allows to write only the remaining length if oob is omitted. In case oob is needed, it makes sense to copy the entire page. Signed-off-by: Richard Weinberger <richard@nod.at>
2015-11-11mtd-utils: Restructure the mtd-utils source.Dongsheng Yang
* There is no code modification in this commit, only moving * the files to proper place. The user tools looks a little messy as we place almost the all tools in the root directory of mtd-utils. To make it more clear, I propose to introduce the following structure for our source code. mtd-utils/ |-- lib |-- include |-- misc-utils |-- jffsX-utils |-- nand-utils |-- nor-utils |-- ubi-utils |-- ubifs-utils `-- tests Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>