diff options
Diffstat (limited to 'fs/cifs/cifsencrypt.c')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index a6ef088e057b..937251cc61c0 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -37,6 +37,7 @@ #include <crypto/aead.h> int __cifs_calc_signature(struct smb_rqst *rqst, + int start, struct TCP_Server_Info *server, char *signature, struct shash_desc *shash) { @@ -45,10 +46,7 @@ int __cifs_calc_signature(struct smb_rqst *rqst, struct kvec *iov = rqst->rq_iov; int n_vec = rqst->rq_nvec; - if (n_vec < 2 || iov[0].iov_len != 4) - return -EIO; - - for (i = 1; i < n_vec; i++) { + for (i = start; i < n_vec; i++) { if (iov[i].iov_len == 0) continue; if (iov[i].iov_base == NULL) { @@ -68,11 +66,12 @@ int __cifs_calc_signature(struct smb_rqst *rqst, /* now hash over the rq_pages array */ for (i = 0; i < rqst->rq_npages; i++) { - void *kaddr = kmap(rqst->rq_pages[i]); - size_t len = rqst->rq_pagesz; + void *kaddr; + unsigned int len, offset; + + rqst_page_get_length(rqst, i, &len, &offset); - if (i == rqst->rq_npages - 1) - len = rqst->rq_tailsz; + kaddr = (char *) kmap(rqst->rq_pages[i]) + offset; crypto_shash_update(shash, kaddr, len); @@ -119,7 +118,7 @@ static int cifs_calc_signature(struct smb_rqst *rqst, return rc; } - return __cifs_calc_signature(rqst, server, signature, + return __cifs_calc_signature(rqst, 1, server, signature, &server->secmech.sdescmd5->shash); } |