From 74675a58507e769beee7d949dbed788af3c4139d Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 30 Apr 2009 10:08:18 -0400 Subject: NLS: update handling of Unicode This patch (as1239) updates the kernel's treatment of Unicode. The character-set conversion routines are well behind the current state of the Unicode specification: They don't recognize the existence of code points beyond plane 0 or of surrogate pairs in the UTF-16 encoding. The old wchar_t 16-bit type is retained because it's still used in lots of places. This shouldn't cause any new problems; if a conversion now results in an invalid 16-bit code then before it must have yielded an undefined code. Difficult-to-read names like "utf_mbstowcs" are replaced with more transparent names like "utf8s_to_utf16s" and the ordering of the parameters is rationalized (buffer lengths come immediate after the pointers they refer to, and the inputs precede the outputs). Fortunately the low-level conversion routines are used in only a few places; the interfaces to the higher-level uni2char and char2uni methods have been left unchanged. Signed-off-by: Alan Stern Acked-by: Clemens Ladisch Signed-off-by: Greg Kroah-Hartman --- fs/ncpfs/ncplib_kernel.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'fs/ncpfs') diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c index 97645f112114..0ec6237a5970 100644 --- a/fs/ncpfs/ncplib_kernel.c +++ b/fs/ncpfs/ncplib_kernel.c @@ -1113,11 +1113,13 @@ ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { int k; + unicode_t u; - k = utf8_mbtowc(&ec, iname, iname_end - iname); - if (k < 0) + k = utf8_to_utf32(iname, iname_end - iname, &u); + if (k < 0 || u > MAX_WCHAR_T) return -EINVAL; iname += k; + ec = u; } else { if (*iname == NCP_ESC) { int k; @@ -1214,7 +1216,7 @@ ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { int k; - k = utf8_wctomb(iname, ec, iname_end - iname); + k = utf32_to_utf8(ec, iname, iname_end - iname); if (k < 0) { err = -ENAMETOOLONG; goto quit; -- cgit v1.2.3-59-g8ed1b