diff options
| author |   Jeff Layton <jlayton@redhat.com> | 2012-09-18 16:20:35 -0700 |
|---|---|---|
| committer |   Steve French <smfrench@gmail.com> | 2012-09-24 21:46:31 -0500 |
| commit | fb308a6f22f7f4f3574dab6b36c4a3598e50cf05 (patch) | |
| tree | fa948996f96a226db3ec0a8b3175bdc877115458 /fs/cifs/smb2transport.c | |
| parent | cifs: teach smb_send_rqst how to handle arrays of pages (diff) | |
| download | wireguard-linux-fb308a6f22f7f4f3574dab6b36c4a3598e50cf05.tar.xz wireguard-linux-fb308a6f22f7f4f3574dab6b36c4a3598e50cf05.zip | |
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.c | 11 |
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) |