Hi, [Resending to include fsdevel, as requested by Dave Chinner] Following the e2fsprogs changes, these are the corresponding kernel-side modifications to support the fname_encoding feature. The patches are split in two parts. The fist 14 patches are refactoring and improvements to the NLS code, including the utf8 normalization support. The final patches implement the fname_encoding feature in ext4. To test this feature, you need to use the tip of e2fsprogs branch, which already include support for enabling this feature. As usual, the ucd files are not included in this email because they are too large, and would actually cause the email message to bounce. There are two test files for this in a private xfstests branch, that I plan to submit upstream once we get this series merged: https://gitlab.collabora.com/krisman/xfstests.git -b encoding_v4 I also tested this with the xfstests smoke tests using two scenarios: (1) a non-encoding TEST_DEV; (2) a utf8 enabled TEST_DEV. On both cases, no unrelated regressions where observed. With my branch of xfstests above, that fixes some related tests, I didn't observe any regressions. Gabriel Krisman Bertazi (19): nls: Wrap uni2char/char2uni callers nls: Wrap charset field access nls: Wrap charset hooks in ops structure nls: Split default charset from NLS core nls: Split struct nls_charset from struct nls_table nls: Add support for multiple versions of an encoding nls: Implement NLS_STRICT_MODE flag nls: Let charsets define the behavior of tolower/toupper nls: Add new interface for string comparisons nls: Add optional normalization and casefold hooks nls: ascii: Support validation and normalization operations nls: utf8: Move nls-utf8{,-core}.c nls: utf8: Integrate utf8 normalization code with utf8 charset nls: utf8: Introduce test module for normalized utf8 implementation ext4: Reserve superblock fields for encoding information ext4: Include encoding information in the superblock ext4: Support encoding-aware file name lookups ext4: Implement EXT4_CASEFOLD_FL flag docs: ext4.rst: Document encoding and case-insensitive Olaf Weber (4): nls: utf8: Add unicode character database files scripts: add trie generator for UTF-8 nls: utf8: Introduce code for UTF-8 normalization nls: utf8n: reduce the size of utf8data[] Documentation/admin-guide/ext4.rst | 29 + fs/befs/linuxvfs.c | 8 +- fs/cifs/cifs_unicode.c | 15 +- fs/cifs/cifsfs.c | 2 +- fs/cifs/connect.c | 2 +- fs/cifs/dir.c | 7 +- fs/ext4/dir.c | 59 + fs/ext4/ext4.h | 33 +- fs/ext4/hash.c | 38 +- fs/ext4/ialloc.c | 2 +- fs/ext4/inline.c | 2 +- fs/ext4/inode.c | 4 +- fs/ext4/ioctl.c | 18 + fs/ext4/namei.c | 85 +- fs/ext4/super.c | 83 + fs/fat/dir.c | 13 +- fs/fat/inode.c | 6 +- fs/fat/namei_vfat.c | 6 +- fs/hfs/super.c | 6 +- fs/hfs/trans.c | 9 +- fs/hfsplus/options.c | 2 +- fs/hfsplus/unicode.c | 6 +- fs/isofs/inode.c | 5 +- fs/isofs/joliet.c | 3 +- fs/jfs/jfs_unicode.c | 9 +- fs/jfs/super.c | 3 +- fs/nls/Kconfig | 15 + fs/nls/Makefile | 20 + fs/nls/mac-celtic.c | 34 +- fs/nls/mac-centeuro.c | 34 +- fs/nls/mac-croatian.c | 34 +- fs/nls/mac-cyrillic.c | 34 +- fs/nls/mac-gaelic.c | 34 +- fs/nls/mac-greek.c | 34 +- fs/nls/mac-iceland.c | 34 +- fs/nls/mac-inuit.c | 34 +- fs/nls/mac-roman.c | 34 +- fs/nls/mac-romanian.c | 34 +- fs/nls/mac-turkish.c | 34 +- fs/nls/nls_ascii.c | 84 +- fs/nls/nls_core.c | 163 ++ fs/nls/nls_cp1250.c | 34 +- fs/nls/nls_cp1251.c | 34 +- fs/nls/nls_cp1255.c | 36 +- fs/nls/nls_cp437.c | 34 +- fs/nls/nls_cp737.c | 34 +- fs/nls/nls_cp775.c | 34 +- fs/nls/nls_cp850.c | 34 +- fs/nls/nls_cp852.c | 34 +- fs/nls/nls_cp855.c | 34 +- fs/nls/nls_cp857.c | 34 +- fs/nls/nls_cp860.c | 34 +- fs/nls/nls_cp861.c | 34 +- fs/nls/nls_cp862.c | 34 +- fs/nls/nls_cp863.c | 34 +- fs/nls/nls_cp864.c | 34 +- fs/nls/nls_cp865.c | 34 +- fs/nls/nls_cp866.c | 34 +- fs/nls/nls_cp869.c | 34 +- fs/nls/nls_cp874.c | 36 +- fs/nls/nls_cp932.c | 36 +- fs/nls/nls_cp936.c | 36 +- fs/nls/nls_cp949.c | 36 +- fs/nls/nls_cp950.c | 36 +- fs/nls/{nls_base.c => nls_default.c} | 124 +- fs/nls/nls_euc-jp.c | 29 +- fs/nls/nls_iso8859-1.c | 34 +- fs/nls/nls_iso8859-13.c | 34 +- fs/nls/nls_iso8859-14.c | 34 +- fs/nls/nls_iso8859-15.c | 34 +- fs/nls/nls_iso8859-2.c | 34 +- fs/nls/nls_iso8859-3.c | 34 +- fs/nls/nls_iso8859-4.c | 34 +- fs/nls/nls_iso8859-5.c | 34 +- fs/nls/nls_iso8859-6.c | 34 +- fs/nls/nls_iso8859-7.c | 34 +- fs/nls/nls_iso8859-9.c | 34 +- fs/nls/nls_koi8-r.c | 34 +- fs/nls/nls_koi8-ru.c | 30 +- fs/nls/nls_koi8-u.c | 34 +- fs/nls/nls_utf8-core.c | 328 +++ fs/nls/nls_utf8-norm.c | 797 ++++++ fs/nls/nls_utf8-selftest.c | 316 +++ fs/nls/nls_utf8.c | 67 - fs/nls/ucd/README | 34 + fs/nls/utf8n.h | 117 + fs/ntfs/inode.c | 2 +- fs/ntfs/super.c | 6 +- fs/ntfs/unistr.c | 13 +- fs/udf/super.c | 3 +- fs/udf/unicode.c | 4 +- include/linux/fs.h | 2 + include/linux/nls.h | 293 ++- scripts/Makefile | 1 + scripts/mkutf8data.c | 3392 ++++++++++++++++++++++++++ 95 files changed, 7287 insertions(+), 618 deletions(-) create mode 100644 fs/nls/nls_core.c rename fs/nls/{nls_base.c => nls_default.c} (89%) create mode 100644 fs/nls/nls_utf8-core.c create mode 100644 fs/nls/nls_utf8-norm.c create mode 100644 fs/nls/nls_utf8-selftest.c delete mode 100644 fs/nls/nls_utf8.c create mode 100644 fs/nls/ucd/README create mode 100644 fs/nls/utf8n.h create mode 100644 scripts/mkutf8data.c -- 2.20.0.rc2
