diff options
| author | Jeff Layton <jlayton@redhat.com> | 2012-09-19 03:20:35 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2012-09-25 06:46:31 +0400 |
| commit | fb308a6f22f7f4f3574dab6b36c4a3598e50cf05 (patch) | |
| tree | fa948996f96a226db3ec0a8b3175bdc877115458 /fs | |
| parent | 97bc00b39408a4180eeeaa976d02d37121488997 (diff) | |
| download | linux-fb308a6f22f7f4f3574dab6b36c4a3598e50cf05.tar.xz | |
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')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 11 | ||||
| -rw-r--r-- | fs/cifs/cifsproto.h | 2 | ||||
| -rw-r--r-- | fs/cifs/smb2transport.c | 11 | ||||
| -rw-r--r-- | fs/cifs/transport.c | 2 |
4 files changed, 25 insertions, 1 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index af520522ef20..652f5051be09 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -29,6 +29,7 @@ #include "ntlmssp.h" #include <linux/ctype.h> #include <linux/random.h> +#include <linux/highmem.h> /* * Calculate and return the CIFS signature based on the mac key and SMB PDU. @@ -93,6 +94,16 @@ static int cifs_calc_signature(struct smb_rqst *rqst, } } + /* 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.sdescmd5->shash, + p_iov.iov_base, p_iov.iov_len); + kunmap(rqst->rq_pages[i]); + } + rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature); if (rc) cERROR(1, "%s: Could not generate md5 hash", __func__); diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 8e071a5a7da4..e97a1843ab98 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -36,6 +36,8 @@ extern struct smb_hdr *cifs_buf_get(void); extern void cifs_buf_release(void *); extern struct smb_hdr *cifs_small_buf_get(void); extern void cifs_small_buf_release(void *); +extern void cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx, + struct kvec *iov); extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *, unsigned int /* length */); extern unsigned int _get_xid(void); 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) diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 381dbb778478..b6097344cd5b 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -251,7 +251,7 @@ smb_send_kvec(struct TCP_Server_Info *server, struct kvec *iov, size_t n_vec, * The page will be kmapped and the address placed into iov_base. The length * will then be adjusted according to the ptailoff. */ -static void +void cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx, struct kvec *iov) { |