diff options
Diffstat (limited to 'fs/cifs/smb2transport.c')
| -rw-r--r-- | fs/cifs/smb2transport.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index 8806f3f76c1d..349d5ccf854c 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -171,7 +171,9 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) unsigned char smb2_signature[SMB2_HMACSHA256_SIZE]; unsigned char *sigptr = smb2_signature; struct kvec *iov = rqst->rq_iov; - struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base; + int iov_hdr_index = rqst->rq_nvec > 1 ? 1 : 0; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)iov[iov_hdr_index].iov_base; struct cifs_ses *ses; ses = smb2_find_smb_ses(server, shdr->SessionId); @@ -202,7 +204,7 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) return rc; } - rc = __cifs_calc_signature(rqst, server, sigptr, + rc = __cifs_calc_signature(rqst, iov_hdr_index, server, sigptr, &server->secmech.sdeschmacsha256->shash); if (!rc) @@ -412,7 +414,9 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) unsigned char smb3_signature[SMB2_CMACAES_SIZE]; unsigned char *sigptr = smb3_signature; struct kvec *iov = rqst->rq_iov; - struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base; + int iov_hdr_index = rqst->rq_nvec > 1 ? 1 : 0; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)iov[iov_hdr_index].iov_base; struct cifs_ses *ses; ses = smb2_find_smb_ses(server, shdr->SessionId); @@ -443,7 +447,7 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) return rc; } - rc = __cifs_calc_signature(rqst, server, sigptr, + rc = __cifs_calc_signature(rqst, iov_hdr_index, server, sigptr, &server->secmech.sdesccmacaes->shash); if (!rc) @@ -480,7 +484,7 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) unsigned int rc; char server_response_sig[16]; struct smb2_sync_hdr *shdr = - (struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base; + (struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base; if ((shdr->Command == SMB2_NEGOTIATE) || (shdr->Command == SMB2_SESSION_SETUP) || @@ -605,14 +609,12 @@ smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, bool log_error) { unsigned int len = mid->resp_buf_size; - struct kvec iov[2]; + struct kvec iov[1]; struct smb_rqst rqst = { .rq_iov = iov, - .rq_nvec = 2 }; + .rq_nvec = 1 }; iov[0].iov_base = (char *)mid->resp_buf; - iov[0].iov_len = 4; - iov[1].iov_base = (char *)mid->resp_buf + 4; - iov[1].iov_len = len; + iov[0].iov_len = len; dump_smb(mid->resp_buf, min_t(u32, 80, len)); /* convert the length into a more usable form */ |