Signed-off-by: Jeff Layton <[email protected]>
---
fs/cifs/smb2pdu.c | 5 +++--
fs/cifs/smb2proto.h | 4 ++--
fs/cifs/smb2transport.c | 44 ++++++++++++++++++++++----------------------
3 files changed, 27 insertions(+), 26 deletions(-)
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index b183420..8c70c04 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1297,6 +1297,8 @@ smb2_readv_callback(struct mid_q_entry *mid)
struct TCP_Server_Info *server = tcon->ses->server;
struct smb2_hdr *buf = (struct smb2_hdr *)rdata->iov[0].iov_base;
unsigned int credits_received = 1;
+ struct smb_rqst rqst = { .rq_iov = rdata->iov,
+ .rq_nvec = rdata->nr_iov };
cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__,
mid->mid, mid->mid_state, rdata->result, rdata->bytes);
@@ -1307,8 +1309,7 @@ smb2_readv_callback(struct mid_q_entry *mid)
/* result already set, check signature */
if (server->sec_mode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
- if (smb2_verify_signature2(rdata->iov, rdata->nr_iov,
- server))
+ if (smb2_verify_signature(&rqst, server))
cERROR(1, "Unexpected SMB signature");
}
/* FIXME: should this be counted toward the initiating task? */
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index a73a963..a9bda04 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -26,6 +26,7 @@
#include <linux/key-type.h>
struct statfs;
+struct smb_rqst;
/*
*****************************************************************
@@ -39,8 +40,7 @@ extern char *smb2_get_data_area_len(int *off, int *len,
struct smb2_hdr *hdr);
extern __le16 *cifs_convert_path_to_utf16(const char *from,
struct cifs_sb_info *cifs_sb);
-extern int smb2_verify_signature2(struct kvec *, unsigned int,
- struct TCP_Server_Info *);
+extern int smb2_verify_signature(struct smb_rqst *, struct TCP_Server_Info *);
extern int smb2_check_receive(struct mid_q_entry *mid,
struct TCP_Server_Info *server, bool log_error);
extern int smb2_setup_request(struct cifs_ses *ses, struct kvec *iov,
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 7276f6f..af0e390 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -39,12 +39,13 @@
#include "smb2glob.h"
static int
-smb2_calc_signature2(const struct kvec *iov, int n_vec,
- struct TCP_Server_Info *server)
+smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
int i, rc;
unsigned char smb2_signature[SMB2_HMACSHA256_SIZE];
unsigned char *sigptr = smb2_signature;
+ struct kvec *iov = rqst->rq_iov;
+ int n_vec = rqst->rq_nvec;
struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE);
@@ -106,10 +107,10 @@ smb2_calc_signature2(const struct kvec *iov, int n_vec,
/* must be called with server->srv_mutex held */
static int
-smb2_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server)
+smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
int rc = 0;
- struct smb2_hdr *smb2_pdu = iov[0].iov_base;
+ struct smb2_hdr *smb2_pdu = rqst->rq_iov[0].iov_base;
if (!(smb2_pdu->Flags & SMB2_FLAGS_SIGNED) ||
server->tcpStatus == CifsNeedNegotiate)
@@ -120,18 +121,17 @@ smb2_sign_smb2(struct kvec *iov, int n_vec, struct
TCP_Server_Info *server)
return rc;
}
- rc = smb2_calc_signature2(iov, n_vec, server);
+ rc = smb2_calc_signature(rqst, server);
return rc;
}
int
-smb2_verify_signature2(struct kvec *iov, unsigned int n_vec,
- struct TCP_Server_Info *server)
+smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
unsigned int rc;
char server_response_sig[16];
- struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
+ struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
if ((smb2_pdu->Command == SMB2_NEGOTIATE) ||
(smb2_pdu->Command == SMB2_OPLOCK_BREAK) ||
@@ -157,7 +157,7 @@ smb2_verify_signature2(struct kvec *iov, unsigned int n_vec,
memset(smb2_pdu->Signature, 0, SMB2_SIGNATURE_SIZE);
mutex_lock(&server->srv_mutex);
- rc = smb2_calc_signature2(iov, n_vec, server);
+ rc = smb2_calc_signature(rqst, server);
mutex_unlock(&server->srv_mutex);
if (rc)
@@ -170,16 +170,6 @@ smb2_verify_signature2(struct kvec *iov, unsigned int
n_vec,
return 0;
}
-static int
-smb2_verify_signature(struct smb2_hdr *smb2_pdu, struct TCP_Server_Info
*server)
-{
- struct kvec iov;
-
- iov.iov_base = (char *)smb2_pdu;
- iov.iov_len = get_rfc1002_length(smb2_pdu) + 4;
- return smb2_verify_signature2(&iov, 1, server);
-}
-
/*
* Set message id for the request. Should be called after wait_for_free_request
* and when srv_mutex is held.
@@ -258,12 +248,18 @@ smb2_check_receive(struct mid_q_entry *mid, struct
TCP_Server_Info *server,
bool log_error)
{
unsigned int len = get_rfc1002_length(mid->resp_buf);
+ struct kvec iov;
+ struct smb_rqst rqst = { .rq_iov = &iov,
+ .rq_nvec = 1 };
+
+ iov.iov_base = (char *)mid->resp_buf;
+ iov.iov_len = get_rfc1002_length(mid->resp_buf) + 4;
dump_smb(mid->resp_buf, min_t(u32, 80, len));
/* convert the length into a more usable form */
if ((len > 24) &&
(server->sec_mode & (SECMODE_SIGN_REQUIRED|SECMODE_SIGN_ENABLED))) {
- if (smb2_verify_signature(mid->resp_buf, server))
+ if (smb2_verify_signature(&rqst, server))
cERROR(1, "Unexpected SMB signature");
}
@@ -277,13 +273,15 @@ smb2_setup_request(struct cifs_ses *ses, struct kvec *iov,
int rc;
struct smb2_hdr *hdr = (struct smb2_hdr *)iov[0].iov_base;
struct mid_q_entry *mid;
+ struct smb_rqst rqst = { .rq_iov = iov,
+ .rq_nvec = nvec };
smb2_seq_num_into_buf(ses->server, hdr);
rc = smb2_get_mid_entry(ses, hdr, &mid);
if (rc)
return rc;
- rc = smb2_sign_smb2(iov, nvec, ses->server);
+ rc = smb2_sign_rqst(&rqst, ses->server);
if (rc)
cifs_delete_mid(mid);
*ret_mid = mid;
@@ -297,6 +295,8 @@ smb2_setup_async_request(struct TCP_Server_Info *server,
struct kvec *iov,
int rc = 0;
struct smb2_hdr *hdr = (struct smb2_hdr *)iov[0].iov_base;
struct mid_q_entry *mid;
+ struct smb_rqst rqst = { .rq_iov = iov,
+ .rq_nvec = nvec };
smb2_seq_num_into_buf(server, hdr);
@@ -304,7 +304,7 @@ smb2_setup_async_request(struct TCP_Server_Info *server,
struct kvec *iov,
if (mid == NULL)
return -ENOMEM;
- rc = smb2_sign_smb2(iov, nvec, server);
+ rc = smb2_sign_rqst(&rqst, server);
if (rc) {
DeleteMidQEntry(mid);
return rc;
--
1.7.11.2
--
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