mtd-utils.git/lib, branch master

ubi-utils: add wear-leveling threshold parameter to ubiattach

2026-08-03T05:42:07+00:00

Add wl_threshold support end-to-end: expose the kernel's wear-leveling threshold via a new --wl-threshold / -w option in ubiattach, plumb it through libubi, and define it by replacing 4 bytes of padding in struct ubi_attach_req. Valid range is 2-65536; 0 means use the kernel default. Signed-off-by: Ran Hongyun Signed-off-by: David Oberhollenzer

lib: libmtd: fix sign extension of ioctl request in mtd_xlock

2026-08-03T05:42:05+00:00

The req parameter of mtd_xlock() was declared as int. On 64-bit big-endian architectures such as ppc64el, _IOW()-derived ioctl numbers have bit 31 set (because _IOC_WRITE=4 is placed at bit 29). Storing such a value in a signed int and then passing it to ioctl(), whose second argument is unsigned long, causes implicit sign extension: 0x80084d05 becomes 0xffffffff80084d05, which does not match the expected constant and fails the cmocka check_expected() assertion in the unit tests for mtd_lock and mtd_unlock. Fix by declaring req as unsigned long, matching the type used by the ioctl() syscall interface. Fixes: test_mtd_lock / test_mtd_unlock failures on ppc64el Signed-off-by: Bastian Germann Signed-off-by: David Oberhollenzer

Import a more recent version of libiniparser

2024-12-17T12:51:35+00:00

We use a vendored library for parsing ini files. Our copy of this library has not been updated since 2007. This commit imports the recent version of the ini parsing library from upstream source at https://gitlab.com/iniparser/iniparser Signed-off-by: David Oberhollenzer

libubi: Add new interface ubi_leb_map()

2024-11-11T09:32:45+00:00

Add ubi_leb_map() implementation, it is used in UBIFS linux kernel libs. This is a preparation for replacing implementation of UBIFS utils with linux kernel libs. Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

mtd-utils: Extract rbtree implementation to common lib

2024-09-25T13:03:08+00:00

Current rbtree implementation code is put under jffs utils, extract it into common lib, and add more rbtree operations(eg. rb_first_postorder, rb_next_postorder, etc.). This is a preparation for replacing implementation of UBIFS utils with linux kernel libs. Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

mtd-utils: Extract list implementation to common lib and add list_sort support

2024-09-25T13:03:08+00:00

Current list implementation code is put under jffs utils, extract it into common lib, and add more list operations(eg. list_move, list_splice, etc.). Besides, add list sorting support in new source file lib/list_sort.c. This is a preparation for replacing implementation of UBIFS utils with linux kernel libs. Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

ubiattach: introduce need_resv_pool in UBI_IOCATT

2023-11-20T06:43:34+00:00

The ioctl UBI_IOCATT has been extended with need_resv_pool parameter in [1]. This parameter is used for deciding whether to reserve PEBs for filling pool/wl_pool for target ubi device. This parameter will be effective when fastmap is enabled, which will slow down the frequency of updating fastmap by filling more free PEBs in pool/wl_pool. See details in [2]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ac085cfe57df2cc1d7a5c4c5e64b8780c8ad452f [2] https://bugzilla.kernel.org/show_bug.cgi?id=217787 Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

ubiattach: introduce disable_fm in UBI_IOCATT

2023-11-20T06:43:30+00:00

The ioctl UBI_IOCATT has been extended with disable_fm parameter after [1]. This parameter is used for disabling fastmap for target ubi device. If 'disable_fm' is set, ubi doesn't create new fastmap even the module param 'fm_autoconvert' is set, and existed old fastmap will be destroyed after attaching process. A simple test case in [2]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=669d204469c46e91d99da24914130f78277a71d3 [2] https://bugzilla.kernel.org/show_bug.cgi?id=216278 Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

mtd-utils: Add new syntax to get devices by name

2023-05-30T09:12:12+00:00

This introduces a new feature to the MTD command line utilities that allows MTD devices to be referenced by name instead of device node. For example this looks like: > # Display info for the MTD device with name "data" > mtdinfo mtd:data > # Copy file to MTD device with name "data" > flashcp /my/file mtd:data This follows the syntax supported by the kernel which allows MTD device's to be mounted by name[1]. Add the function mtd_find_dev_node() that accepts an MTD "identifier" and returns the MTD's device node. The function accepts a string starting with "mtd:" which it treats as the MTD's name. It then attempts to search for the MTD, and if found maps it back to the /dev/mtdX device node. If the string does not start with "mtd:", then assume it's the old style and refers directly to a MTD device node. The function is then hooked into existing tools like flashcp, mtdinfo, flash_unlock, etc. To load in the new MTD parsing code in a consistent way across programs. [1] http://www.linux-mtd.infradead.org/faq/jffs2.html#L_mtdblock Signed-off-by: Brandon Maier Signed-off-by: David Oberhollenzer

libmtd: Add function to get MTD info by device name

2023-05-30T09:12:12+00:00

This is a convenience function for end users. In some situations it's easier to reference MTD device's by their name then by MTD number, as the name may be more reliable if device partitioning is dynamic or for porting between systems. Signed-off-by: Brandon Maier Signed-off-by: David Oberhollenzer