Hi, This patchset introduces my lastest improvements to handling casefolded directories in e2fsprogs. It is split in 3 parts: Patch 1 and 2 provide tune2fs with the capability to enable the CASEFOLD feature on existing filesystems. The reasoning why this was not the default since ever, and why it is safe to do so now, is on the commit message. Patch 3 and 4 implement some NLS/UTF-8 methods important to the fsck validations done after. Patch 5 and higher, improve e2fsck to fix the following issues in case-insensitive directories: badly encoded filenames, duplicated filenames, differing only by case. The final patches also introduce documentation to the new functionalities and tests for the new fsck features. This series was tested agains the e2fsprogs testsuite and didn't trigger any regressions. Gabriel Krisman Bertazi (11): tune2fs: Allow enabling casefold feature after fs creation tune2fs: Fix casefold+encrypt error message ext2fs: Add method to validate casefolded strings ext2fs: Implement faster CI comparison of strings e2fsck: Fix entries with invalid encoded characters e2fsck: Support casefold directories when rehashing dict: Support comparison with context e2fsck: Detect duplicated casefolded direntries for rehash e2fsck: Add option to force encoded filename verification e2fsck.8.in: Document check_encoding extended option tests: f_bad_fname: Validate fix of invalid filenames and duplicates e2fsck/e2fsck.8.in | 4 ++ e2fsck/e2fsck.c | 4 ++ e2fsck/e2fsck.h | 2 + e2fsck/pass1.c | 17 +++++++ e2fsck/pass1b.c | 2 +- e2fsck/pass2.c | 68 ++++++++++++++++++++++++++-- e2fsck/rehash.c | 88 ++++++++++++++++++++++++++++++------- e2fsck/unix.c | 4 ++ lib/ext2fs/ext2fs.h | 6 +++ lib/ext2fs/ext2fsP.h | 6 +++ lib/ext2fs/nls_utf8.c | 69 +++++++++++++++++++++++++++++ lib/support/dict.c | 22 +++++++--- lib/support/dict.h | 4 +- lib/support/mkquota.c | 2 +- misc/tune2fs.c | 18 +++++++- tests/f_bad_fname/expect.1 | 22 ++++++++++ tests/f_bad_fname/expect.2 | 7 +++ tests/f_bad_fname/image.gz | Bin 0 -> 802 bytes tests/f_bad_fname/name | 1 + 19 files changed, 316 insertions(+), 30 deletions(-) create mode 100644 tests/f_bad_fname/expect.1 create mode 100644 tests/f_bad_fname/expect.2 create mode 100644 tests/f_bad_fname/image.gz create mode 100644 tests/f_bad_fname/name -- 2.25.0
