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| 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/cifsencrypt.c | |
| parent | 97bc00b39408a4180eeeaa976d02d37121488997 (diff) | |
| download | lwn-fb308a6f22f7f4f3574dab6b36c4a3598e50cf05.tar.gz lwn-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/cifsencrypt.c')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 11 |
1 files changed, 11 insertions, 0 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__); |