+++ /dev/null
-From fd3ba42c76d3d4b776120c2b24c1791e7bb3deb1 Mon Sep 17 00:00:00 2001
-From: Frediano Ziglio <frediano.ziglio@citrix.com>
-Date: Tue, 7 Aug 2012 04:33:03 -0500
-Subject: Convert properly UTF-8 to UTF-16
-
-From: Frediano Ziglio <frediano.ziglio@citrix.com>
-
-commit fd3ba42c76d3d4b776120c2b24c1791e7bb3deb1 upstream.
-
-wchar_t is currently 16bit so converting a utf8 encoded characters not
-in plane 0 (>= 0x10000) to wchar_t (that is calling char2uni) lead to a
--EINVAL return. This patch detect utf8 in cifs_strtoUTF16 and add special
-code calling utf8s_to_utf16s.
-
-Signed-off-by: Frediano Ziglio <frediano.ziglio@citrix.com>
-Acked-by: Jeff Layton <jlayton@redhat.com>
-Signed-off-by: Steve French <smfrench@gmail.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- fs/cifs/cifs_unicode.c | 22 ++++++++++++++++++++++
- 1 file changed, 22 insertions(+)
-
---- a/fs/cifs/cifs_unicode.c
-+++ b/fs/cifs/cifs_unicode.c
-@@ -203,6 +203,27 @@ cifs_strtoUCS(__le16 *to, const char *fr
- int i;
- wchar_t wchar_to; /* needed to quiet sparse */
-
-+ /* special case for utf8 to handle no plane0 chars */
-+ if (!strcmp(codepage->charset, "utf8")) {
-+ /*
-+ * convert utf8 -> utf16, we assume we have enough space
-+ * as caller should have assumed conversion does not overflow
-+ * in destination len is length in wchar_t units (16bits)
-+ */
-+ i = utf8s_to_utf16s(from, len, UTF16_LITTLE_ENDIAN,
-+ (wchar_t *) to, len);
-+
-+ /* if success terminate and exit */
-+ if (i >= 0)
-+ goto success;
-+ /*
-+ * if fails fall back to UCS encoding as this
-+ * function should not return negative values
-+ * currently can fail only if source contains
-+ * invalid encoded characters
-+ */
-+ }
-+
- for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
- charlen = codepage->char2uni(from, len, &wchar_to);
- if (charlen < 1) {
-@@ -215,6 +236,7 @@ cifs_strtoUCS(__le16 *to, const char *fr
- put_unaligned_le16(wchar_to, &to[i]);
- }
-
-+success:
- put_unaligned_le16(0, &to[i]);
- return i;
- }