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authorJeff Layton <jlayton@redhat.com>2007-11-03 04:34:04 +0000
committerSteve French <sfrench@us.ibm.com>2007-11-03 04:34:04 +0000
commit745542e210b3b15751ea9d511321924ac36b85db (patch)
treed1d696a239239e61f2edc2ca903dc88c32d2065d /fs/cifs
parent7505e0525c914cdfdb54f43a7e70f038a16a5486 (diff)
[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 <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifsencrypt.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 632070b4275..788f0ad6fed 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) {