The goal of this patchset is to adapt the NLS subsystem to support a full UTF-8 normalization and casefold operations for specific versions of unicode. There are many use cases of this feature and, while my specific interest is on case-insensitiveness for local filesystems, I am aware this might be in the wishlist of people working on SMB, NFS and others. The first part of the patchset refactors the NLS subsytem to allow multiple tables of the same encoding (differentiated by the version) in an inexpensive way. It also create hooks for some higher-level operations, like comparisons and normalization. A new interface is exported to request a specific version of the charset. The second part of the patchset introduces the utf8 normalization code as a new NLS charset. It is implemented as a separated charset, called utf8n to preserve curent behavior of the nls_utf8 charset. The normalization core is provided by the SGI patches from 2014, which I refactored, adapted and updated to unicode 10.0.0. The last patch is a test module, which does some sanity check on the normalization code when it is loaded. As usual, the unicode source files are not part of the patch because they are too big and would bounce the emails. If you are interested in fetching this with minimal effort, you can clone a branch from: https://gitlab.collabora.com/krisman/linux.git -b nls-merge-int Gabriel Krisman Bertazi (11): 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: Add new interface for string comparisons nls: Let charsets define the behavior of tolower/toupper nls: Add optional normalization and casefold hooks nls: utf8norm: Integrate utf8norm code with NLS subsystem nls: utf8norm: Introduce test module for utf8norm implementation Olaf Weber (4): nls: utf8norm: Add unicode character database files scripts: add trie generator for UTF-8 nls: utf8norm: Introduce code for UTF-8 normalization nls: utf8norm: reduce the size of utf8data[] drivers/staging/ncpfs/ioctl.c | 13 +- drivers/staging/ncpfs/ncplib_kernel.c | 8 +- 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/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 | 13 + 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 | 34 +- fs/nls/nls_base.c | 505 +--- 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_default.c | 488 ++++ 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.c | 34 +- fs/nls/nls_utf8n-core.c | 291 +++ fs/nls/nls_utf8n-norm.c | 797 ++++++ fs/nls/nls_utf8n-selftest.c | 307 +++ fs/nls/ucd/README | 33 + 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/nls.h | 126 +- scripts/Makefile | 1 + scripts/mkutf8data.c | 3464 +++++++++++++++++++++++++ 86 files changed, 7138 insertions(+), 912 deletions(-) create mode 100644 fs/nls/nls_default.c create mode 100644 fs/nls/nls_utf8n-core.c create mode 100644 fs/nls/nls_utf8n-norm.c create mode 100644 fs/nls/nls_utf8n-selftest.c create mode 100644 fs/nls/ucd/README create mode 100644 fs/nls/utf8n.h create mode 100644 scripts/mkutf8data.c -- 2.17.0
