From 745542e210b3b15751ea9d511321924ac36b85db Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sat, 3 Nov 2007 04:34:04 +0000 Subject: [PATCH] [CIFS] allow cifs_calc_signature2 to deal with a zero length iovec Currently, cifs_calc_signature2 errors out if it gets a zero-length iovec. Fix it to silently continue in that case. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsencrypt.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 632070b427..788f0ad6fe 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -99,11 +99,12 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec, MD5Init(&context); MD5Update(&context, (char *)&key->data, key->len); for (i = 0; i < n_vec; i++) { + if (iov[i].iov_len == 0) + continue; if (iov[i].iov_base == NULL) { cERROR(1, ("null iovec entry")); return -EIO; - } else if (iov[i].iov_len == 0) - break; /* bail out if we are sent nothing to sign */ + } /* The first entry includes a length field (which does not get signed that occupies the first 4 bytes before the header */ if (i == 0) { -- 2.39.5