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| author | Alan Stern <stern@rowland.harvard.edu> | 2009-04-30 16:08:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-06-16 06:44:43 +0200 |
| commit | 74675a58507e769beee7d949dbed788af3c4139d (patch) | |
| tree | d4ae3cc06dbfadecf1eaf6ed0aef249fc87b07e6 /fs/ncpfs/ncplib_kernel.c | |
| parent | usb: return device strings in UTF-8 (diff) | |
| download | linux-74675a58507e769beee7d949dbed788af3c4139d.tar.xz linux-74675a58507e769beee7d949dbed788af3c4139d.zip | |
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 <stern@rowland.harvard.edu>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/ncpfs/ncplib_kernel.c')
| -rw-r--r-- | fs/ncpfs/ncplib_kernel.c | 8 |
1 files changed, 5 insertions, 3 deletions
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; |