From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.60 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794168108; b=mXw/V0e0na+L5hMZc6MzCEp2PXiEvNfbhJzhX+Lp6lsBKwKAVc9ZOOrexvgTdDghc+xI zlG5ysBnXQXMWx0mR7YCnP0Fyge0HlHYTQs8XE5tvj6sF9H1Eo6YRZ8E6ZI7ES7GDfLiw ovguY/9pdgWuOGaaw8xyLuOwghj0htxUzCe6o0V3urZ8PX8L5GJcuYty1V6/30UfNjxop mQHNCMFF2FPnxZdWS81VyezbqoNY6AVyYkTYGqaaOuUZg1sGPvdIP7jRvarHnK3KkU117 RPCP1nYHMHMevyFEg1joZ/MvDJnfLWKNgBTWitlZDD6ejZRZtcbZQeMkRzZpCs1c7xA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794168108; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-ID: X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; bh=v0vWHBrKk8gOXLn8O1Qi8gzVrEv0F3GWCG10R6t5Tp0=; b=Gre4dyEx2jy1k6tSYQE/wBmyUFzbVt/X7zOgtBqwfPcyP4CrGqDRxV9rGkyv7hQ449EC pZNvc4yif2CBjGVMm7+b55/HAAm0Zv6zhYbsOej5NRrCWUD6oAmy7R+MevItn/aSO5Qqd uGIF29JXGWb73lFabt96Ysq0k/XMN+bkc34ZDOiUQfY3SB3HRwkbVR3rN4xkNW78ay9Au NdFTjwnwkmsuFcr2mZp/T1aIxS2pLn+vekF3MtywUP88F7n8vaa+761THX3Rq9yxuqk6n zczmoB35PEg9PoKY+kR1gGfvS3j2buJdIZrmwQdwlyZ2SKezxiXgfKZ93+aFyn2OucQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=l3qYp2Kf; arc=none smtp.remote-ip=91.218.175.60 Received: from mta0.migadu.com (out-60.mta0.migadu.com [91.218.175.60]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CB49606A322 for ; Sun, 8 Nov 2026 20:01:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 0CB49606A322 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=l3qYp2Kf X-Envelope-To: linux-fsdevel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=nQRIbe+YkrWoJSMSBwuI55bGKAv8o+6yE9eXWZtYWwM=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794168104; v=1; x=1794772904; b=l3qYp2KfnaLbLkrWtbqG08awS4BBtgpubxlclDj70C0x2f4xaOq9LpSvqOfUOd+g4U66VGF1 NZysSrl4lWNwNRDSWDcwy9Pz8DS3i9KEulqLJ+r2VC9RpxTLSK+LHJU1J65GK1hAOubq7oKwHtM GdvK7EoQdLOmXEOdHGXbkZyw= X-Envelope-To: linux-fsdevel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id cedb39edc067c53c; Sun, 08 Nov 2026 20:01:44 +0000 X-Mizu-Trace-ID: cedb39edc067c53c X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: brauner@kernel.org, viro@zeniv.linux.org.uk Cc: hirofumi@mail.parknet.co.jp, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, fuad.tabba@linux.dev Subject: [PATCH 1/2] fs/nls: Add codepage 720 (Arabic) Date: Sun, 8 Nov 2026 20:01:40 +0000 Message-ID: <20261108200141.383158-2-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261108200141.383158-1-fuad.tabba@linux.dev> References: <20261108200141.383158-1-fuad.tabba@linux.dev> X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit FAT stores short names in the OEM code page of the system that wrote them, and the OEM code page of Arabic Windows is 720. The kernel's only DOS code page for Arabic is cp864, so mounting such a volume with codepage=720 fails with "codepage cp720 not found". Add nls_cp720 behind NLS_CODEPAGE_720, with tables generated by a script from Microsoft's code page 720 table, as ICU's windows-720-2000 mapping carries it. That table maps 0x80, 0x81, 0x84, 0x86 and 0x8d-0x90 to C1 controls, and those eight bytes are left unassigned, as ICU's ibm-720 mapping leaves them. Signed-off-by: Fuad Tabba --- fs/nls/Kconfig | 18 ++- fs/nls/Makefile | 1 + fs/nls/nls_cp720.c | 335 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 351 insertions(+), 3 deletions(-) create mode 100644 fs/nls/nls_cp720.c diff --git a/fs/nls/Kconfig b/fs/nls/Kconfig index 2a601af6f3bd5..a19ef628f779e 100644 --- a/fs/nls/Kconfig +++ b/fs/nls/Kconfig @@ -26,9 +26,9 @@ config NLS_DEFAULT the NLS used by your console, not the NLS used by a specific file system (if different) to store data (filenames) on a disk. Currently, the valid values are: - big5, cp437, cp737, cp775, cp850, cp852, cp855, cp857, cp860, cp861, - cp862, cp863, cp864, cp865, cp866, cp869, cp874, cp932, cp936, - cp949, cp950, cp1251, cp1255, euc-jp, euc-kr, gb2312, iso8859-1, + big5, cp437, cp720, cp737, cp775, cp850, cp852, cp855, cp857, cp860, + cp861, cp862, cp863, cp864, cp865, cp866, cp869, cp874, cp932, + cp936, cp949, cp950, cp1251, cp1255, euc-jp, euc-kr, gb2312, iso8859-1, iso8859-2, iso8859-3, iso8859-4, iso8859-5, iso8859-6, iso8859-7, iso8859-8, iso8859-9, iso8859-13, iso8859-14, iso8859-15, koi8-r, koi8-ru, koi8-u, sjis, tis-620, macroman, utf8. @@ -49,6 +49,18 @@ config NLS_CODEPAGE_437 say Y here if you want to include the DOS codepage that is used in the United States and parts of Canada. This is recommended. +config NLS_CODEPAGE_720 + tristate "Codepage 720 (Arabic)" + help + The Microsoft FAT file system family can deal with filenames in + native language character sets. These character sets are stored in + so-called DOS codepages. You need to include the appropriate + codepage if you want to be able to read/write these filenames on + DOS/Windows partitions correctly. This does apply to the filenames + only, not to the file contents. You can include several codepages; + say Y here if you want to include the DOS codepage for Arabic used + by Windows (OEM 720). If unsure, say N. + config NLS_CODEPAGE_737 tristate "Codepage 737 (Greek)" help diff --git a/fs/nls/Makefile b/fs/nls/Makefile index 5062c699d0411..2a9a847083592 100644 --- a/fs/nls/Makefile +++ b/fs/nls/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_NLS) += nls_base.o obj-$(CONFIG_NLS_CODEPAGE_437) += nls_cp437.o +obj-$(CONFIG_NLS_CODEPAGE_720) += nls_cp720.o obj-$(CONFIG_NLS_CODEPAGE_737) += nls_cp737.o obj-$(CONFIG_NLS_CODEPAGE_775) += nls_cp775.o obj-$(CONFIG_NLS_CODEPAGE_850) += nls_cp850.o diff --git a/fs/nls/nls_cp720.c b/fs/nls/nls_cp720.c new file mode 100644 index 0000000000000..bb57c61792d5f --- /dev/null +++ b/fs/nls/nls_cp720.c @@ -0,0 +1,335 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Charset cp720 translation tables. + * Generated from Microsoft's code page 720 table (ICU windows-720-2000), + * with the eight bytes it maps to C1 controls left unassigned. + * The Unicode to charset table has only exact mappings. + */ + +#include +#include +#include +#include +#include + +static const wchar_t charset2uni[256] = { + /* 0x00*/ + 0x0000, 0x0001, 0x0002, 0x0003, + 0x0004, 0x0005, 0x0006, 0x0007, + 0x0008, 0x0009, 0x000a, 0x000b, + 0x000c, 0x000d, 0x000e, 0x000f, + /* 0x10*/ + 0x0010, 0x0011, 0x0012, 0x0013, + 0x0014, 0x0015, 0x0016, 0x0017, + 0x0018, 0x0019, 0x001a, 0x001b, + 0x001c, 0x001d, 0x001e, 0x001f, + /* 0x20*/ + 0x0020, 0x0021, 0x0022, 0x0023, + 0x0024, 0x0025, 0x0026, 0x0027, + 0x0028, 0x0029, 0x002a, 0x002b, + 0x002c, 0x002d, 0x002e, 0x002f, + /* 0x30*/ + 0x0030, 0x0031, 0x0032, 0x0033, + 0x0034, 0x0035, 0x0036, 0x0037, + 0x0038, 0x0039, 0x003a, 0x003b, + 0x003c, 0x003d, 0x003e, 0x003f, + /* 0x40*/ + 0x0040, 0x0041, 0x0042, 0x0043, + 0x0044, 0x0045, 0x0046, 0x0047, + 0x0048, 0x0049, 0x004a, 0x004b, + 0x004c, 0x004d, 0x004e, 0x004f, + /* 0x50*/ + 0x0050, 0x0051, 0x0052, 0x0053, + 0x0054, 0x0055, 0x0056, 0x0057, + 0x0058, 0x0059, 0x005a, 0x005b, + 0x005c, 0x005d, 0x005e, 0x005f, + /* 0x60*/ + 0x0060, 0x0061, 0x0062, 0x0063, + 0x0064, 0x0065, 0x0066, 0x0067, + 0x0068, 0x0069, 0x006a, 0x006b, + 0x006c, 0x006d, 0x006e, 0x006f, + /* 0x70*/ + 0x0070, 0x0071, 0x0072, 0x0073, + 0x0074, 0x0075, 0x0076, 0x0077, + 0x0078, 0x0079, 0x007a, 0x007b, + 0x007c, 0x007d, 0x007e, 0x007f, + /* 0x80*/ + 0x0000, 0x0000, 0x00e9, 0x00e2, + 0x0000, 0x00e0, 0x0000, 0x00e7, + 0x00ea, 0x00eb, 0x00e8, 0x00ef, + 0x00ee, 0x0000, 0x0000, 0x0000, + /* 0x90*/ + 0x0000, 0x0651, 0x0652, 0x00f4, + 0x00a4, 0x0640, 0x00fb, 0x00f9, + 0x0621, 0x0622, 0x0623, 0x0624, + 0x00a3, 0x0625, 0x0626, 0x0627, + /* 0xa0*/ + 0x0628, 0x0629, 0x062a, 0x062b, + 0x062c, 0x062d, 0x062e, 0x062f, + 0x0630, 0x0631, 0x0632, 0x0633, + 0x0634, 0x0635, 0x00ab, 0x00bb, + /* 0xb0*/ + 0x2591, 0x2592, 0x2593, 0x2502, + 0x2524, 0x2561, 0x2562, 0x2556, + 0x2555, 0x2563, 0x2551, 0x2557, + 0x255d, 0x255c, 0x255b, 0x2510, + /* 0xc0*/ + 0x2514, 0x2534, 0x252c, 0x251c, + 0x2500, 0x253c, 0x255e, 0x255f, + 0x255a, 0x2554, 0x2569, 0x2566, + 0x2560, 0x2550, 0x256c, 0x2567, + /* 0xd0*/ + 0x2568, 0x2564, 0x2565, 0x2559, + 0x2558, 0x2552, 0x2553, 0x256b, + 0x256a, 0x2518, 0x250c, 0x2588, + 0x2584, 0x258c, 0x2590, 0x2580, + /* 0xe0*/ + 0x0636, 0x0637, 0x0638, 0x0639, + 0x063a, 0x0641, 0x00b5, 0x0642, + 0x0643, 0x0644, 0x0645, 0x0646, + 0x0647, 0x0648, 0x0649, 0x064a, + /* 0xf0*/ + 0x2261, 0x064b, 0x064c, 0x064d, + 0x064e, 0x064f, 0x0650, 0x2248, + 0x00b0, 0x2219, 0x00b7, 0x221a, + 0x207f, 0x00b2, 0x25a0, 0x00a0, +}; + +static const unsigned char page00[256] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */ + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */ + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */ + 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ + 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */ + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */ + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */ + 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98-0x9f */ + 0xff, 0x00, 0x00, 0x9c, 0x94, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */ + 0x00, 0x00, 0x00, 0xae, 0x00, 0x00, 0x00, 0x00, /* 0xa8-0xaf */ + 0xf8, 0x00, 0xfd, 0x00, 0x00, 0xe6, 0x00, 0xfa, /* 0xb0-0xb7 */ + 0x00, 0x00, 0x00, 0xaf, 0x00, 0x00, 0x00, 0x00, /* 0xb8-0xbf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0-0xc7 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8-0xdf */ + 0x85, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x87, /* 0xe0-0xe7 */ + 0x8a, 0x82, 0x88, 0x89, 0x00, 0x00, 0x8c, 0x8b, /* 0xe8-0xef */ + 0x00, 0x00, 0x00, 0x00, 0x93, 0x00, 0x00, 0x00, /* 0xf0-0xf7 */ + 0x00, 0x97, 0x00, 0x96, 0x00, 0x00, 0x00, 0x00, /* 0xf8-0xff */ +}; + +static const unsigned char page06[256] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */ + 0x00, 0x98, 0x99, 0x9a, 0x9b, 0x9d, 0x9e, 0x9f, /* 0x20-0x27 */ + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0x28-0x2f */ + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xe0, 0xe1, /* 0x30-0x37 */ + 0xe2, 0xe3, 0xe4, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */ + 0x95, 0xe5, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, /* 0x40-0x47 */ + 0xed, 0xee, 0xef, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, /* 0x48-0x4f */ + 0xf6, 0x91, 0x92, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */ +}; + +static const unsigned char page20[256] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20-0x27 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40-0x47 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, /* 0x78-0x7f */ +}; + +static const unsigned char page22[256] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */ + 0x00, 0xf9, 0xfb, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20-0x27 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40-0x47 */ + 0xf7, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */ + 0x00, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */ +}; + +static const unsigned char page25[256] = { + 0xc4, 0x00, 0xb3, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */ + 0x00, 0x00, 0x00, 0x00, 0xda, 0x00, 0x00, 0x00, /* 0x08-0x0f */ + 0xbf, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 0x10-0x17 */ + 0xd9, 0x00, 0x00, 0x00, 0xc3, 0x00, 0x00, 0x00, /* 0x18-0x1f */ + 0x00, 0x00, 0x00, 0x00, 0xb4, 0x00, 0x00, 0x00, /* 0x20-0x27 */ + 0x00, 0x00, 0x00, 0x00, 0xc2, 0x00, 0x00, 0x00, /* 0x28-0x2f */ + 0x00, 0x00, 0x00, 0x00, 0xc1, 0x00, 0x00, 0x00, /* 0x30-0x37 */ + 0x00, 0x00, 0x00, 0x00, 0xc5, 0x00, 0x00, 0x00, /* 0x38-0x3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40-0x47 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4f */ + 0xcd, 0xba, 0xd5, 0xd6, 0xc9, 0xb8, 0xb7, 0xbb, /* 0x50-0x57 */ + 0xd4, 0xd3, 0xc8, 0xbe, 0xbd, 0xbc, 0xc6, 0xc7, /* 0x58-0x5f */ + 0xcc, 0xb5, 0xb6, 0xb9, 0xd1, 0xd2, 0xcb, 0xcf, /* 0x60-0x67 */ + 0xd0, 0xca, 0xd8, 0xd7, 0xce, 0x00, 0x00, 0x00, /* 0x68-0x6f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78-0x7f */ + + 0xdf, 0x00, 0x00, 0x00, 0xdc, 0x00, 0x00, 0x00, /* 0x80-0x87 */ + 0xdb, 0x00, 0x00, 0x00, 0xdd, 0x00, 0x00, 0x00, /* 0x88-0x8f */ + 0xde, 0xb0, 0xb1, 0xb2, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98-0x9f */ + 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */ +}; + +static const unsigned char *const page_uni2charset[256] = { + page00, NULL, NULL, NULL, NULL, NULL, page06, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + page20, NULL, page22, NULL, NULL, page25, NULL, NULL, +}; + +static const unsigned char charset2lower[256] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ + 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */ + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */ + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */ + 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ + 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */ + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */ + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */ + 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ + + 0x00, 0x00, 0x82, 0x83, 0x00, 0x85, 0x00, 0x87, /* 0x80-0x87 */ + 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x00, 0x00, 0x00, /* 0x88-0x8f */ + 0x00, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */ + 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */ + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */ + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */ + 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */ + 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */ + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */ + 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */ + 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */ + 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */ + 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */ + 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */ + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */ + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */ +}; + +static const unsigned char charset2upper[256] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */ + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */ + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */ + 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ + 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */ + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */ + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */ + 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ + + 0x00, 0x00, 0x82, 0x83, 0x00, 0x85, 0x00, 0x87, /* 0x80-0x87 */ + 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x00, 0x00, 0x00, /* 0x88-0x8f */ + 0x00, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */ + 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */ + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */ + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */ + 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */ + 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */ + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */ + 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */ + 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */ + 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */ + 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */ + 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */ + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */ + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */ +}; + +static int uni2char(wchar_t uni, unsigned char *out, int boundlen) +{ + const unsigned char *uni2charset; + unsigned char cl = uni & 0x00ff; + unsigned char ch = (uni & 0xff00) >> 8; + + if (boundlen <= 0) + return -ENAMETOOLONG; + + uni2charset = page_uni2charset[ch]; + if (uni2charset && uni2charset[cl]) + out[0] = uni2charset[cl]; + else + return -EINVAL; + return 1; +} + +static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni) +{ + *uni = charset2uni[*rawstring]; + if (*uni == 0x0000) + return -EINVAL; + return 1; +} + +static struct nls_table table = { + .charset = "cp720", + .uni2char = uni2char, + .char2uni = char2uni, + .charset2lower = charset2lower, + .charset2upper = charset2upper, +}; + +static int __init init_nls_cp720(void) +{ + return register_nls(&table); +} + +static void __exit exit_nls_cp720(void) +{ + unregister_nls(&table); +} + +module_init(init_nls_cp720) +module_exit(exit_nls_cp720) + +MODULE_DESCRIPTION("NLS Codepage 720 (Arabic)"); +MODULE_LICENSE("Dual BSD/GPL"); -- 2.47.3