From 11379b5e33950048ad66825da7f462b0d0da9d73 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 17 May 2011 15:28:21 -0400 Subject: [PATCH] cifs: fix cifsConvertToUCS() for the mapchars case As Metze pointed out, commit 84cdf74e broke mapchars option: Commit "cifs: fix unaligned accesses in cifsConvertToUCS" (84cdf74e8096a10dd6acbb870dd404b92f07a756) does multiple steps in just one commit (moving the function and changing it without testing). put_unaligned_le16(temp, &target[j]); is never called for any codepoint the goes via the 'default' switch statement. As a result we put just zero (or maybe uninitialized) bytes into the target buffer. His proposed patch looks correct, but doesn't apply to the current head of the tree. This patch should also fix it. Cc: # .38.x: 581ade4: cifs: clean up various nits in unicode routines (try #2) Reported-by: Stefan Metzmacher Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifs_unicode.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c index 23d43cde4306..1b2e180b018d 100644 --- a/fs/cifs/cifs_unicode.c +++ b/fs/cifs/cifs_unicode.c @@ -277,6 +277,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen, for (i = 0, j = 0; i < srclen; j++) { src_char = source[i]; + charlen = 1; switch (src_char) { case 0: put_unaligned(0, &target[j]); @@ -316,16 +317,13 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen, dst_char = cpu_to_le16(0x003f); charlen = 1; } - /* - * character may take more than one byte in the source - * string, but will take exactly two bytes in the - * target string - */ - i += charlen; - continue; } + /* + * character may take more than one byte in the source string, + * but will take exactly two bytes in the target string + */ + i += charlen; put_unaligned(dst_char, &target[j]); - i++; /* move to next char in source string */ } ctoUCS_out: