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authorJeff Layton <jlayton@redhat.com>2012-09-18 16:20:35 -0700
committerSteve French <smfrench@gmail.com>2012-09-24 21:46:31 -0500
commitfb308a6f22f7f4f3574dab6b36c4a3598e50cf05 (patch)
treefa948996f96a226db3ec0a8b3175bdc877115458 /fs/cifs/smb2transport.c
parent97bc00b39408a4180eeeaa976d02d37121488997 (diff)
cifs: teach signing routines how to deal with arrays of pages in a smb_rqst
Use the smb_send_rqst helper function to kmap each page in the array and update the hash for that chunk. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/smb2transport.c')
-rw-r--r--fs/cifs/smb2transport.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 1850d9ec3c90..9ca4bcfb34c6 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -30,6 +30,7 @@
#include <linux/uaccess.h>
#include <asm/processor.h>
#include <linux/mempool.h>
+#include <linux/highmem.h>
#include "smb2pdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
@@ -95,6 +96,16 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
}
}
+ /* now hash over the rq_pages array */
+ for (i = 0; i < rqst->rq_npages; i++) {
+ struct kvec p_iov;
+
+ cifs_rqst_page_to_kvec(rqst, i, &p_iov);
+ crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
+ p_iov.iov_base, p_iov.iov_len);
+ kunmap(rqst->rq_pages[i]);
+ }
+
rc = crypto_shash_final(&server->secmech.sdeschmacsha256->shash,
sigptr);
if (rc)