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Diffstat (limited to 'fs/cifs/smb2transport.c')
-rw-r--r--fs/cifs/smb2transport.c81
1 files changed, 40 insertions, 41 deletions
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index bc9a7b634643..52ff937fd1ed 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -115,13 +115,13 @@ smb3_crypto_shash_allocate(struct TCP_Server_Info *server)
}
static struct cifs_ses *
-smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server)
+smb2_find_smb_ses(struct smb2_sync_hdr *shdr, struct TCP_Server_Info *server)
{
struct cifs_ses *ses;
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
- if (ses->Suid != smb2hdr->SessionId)
+ if (ses->Suid != shdr->SessionId)
continue;
spin_unlock(&cifs_tcp_ses_lock);
return ses;
@@ -131,7 +131,6 @@ smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server)
return NULL;
}
-
int
smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
@@ -139,17 +138,17 @@ 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_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(iov[0].iov_base);
struct cifs_ses *ses;
- ses = smb2_find_smb_ses(smb2_pdu, server);
+ ses = smb2_find_smb_ses(shdr, server);
if (!ses) {
cifs_dbg(VFS, "%s: Could not find session\n", __func__);
return 0;
}
memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE);
- memset(smb2_pdu->Signature, 0x0, SMB2_SIGNATURE_SIZE);
+ memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE);
rc = smb2_crypto_shash_allocate(server);
if (rc) {
@@ -174,7 +173,7 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
&server->secmech.sdeschmacsha256->shash);
if (!rc)
- memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+ memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE);
return rc;
}
@@ -356,17 +355,17 @@ 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_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(iov[0].iov_base);
struct cifs_ses *ses;
- ses = smb2_find_smb_ses(smb2_pdu, server);
+ ses = smb2_find_smb_ses(shdr, server);
if (!ses) {
cifs_dbg(VFS, "%s: Could not find session\n", __func__);
return 0;
}
memset(smb3_signature, 0x0, SMB2_CMACAES_SIZE);
- memset(smb2_pdu->Signature, 0x0, SMB2_SIGNATURE_SIZE);
+ memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE);
rc = crypto_shash_setkey(server->secmech.cmacaes,
ses->smb3signingkey, SMB2_CMACAES_SIZE);
@@ -391,7 +390,7 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
&server->secmech.sdesccmacaes->shash);
if (!rc)
- memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+ memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE);
return rc;
}
@@ -401,14 +400,14 @@ static int
smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
int rc = 0;
- struct smb2_hdr *smb2_pdu = rqst->rq_iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
- if (!(smb2_pdu->Flags & SMB2_FLAGS_SIGNED) ||
+ if (!(shdr->Flags & SMB2_FLAGS_SIGNED) ||
server->tcpStatus == CifsNeedNegotiate)
return rc;
if (!server->session_estab) {
- strncpy(smb2_pdu->Signature, "BSRSPYL", 8);
+ strncpy(shdr->Signature, "BSRSPYL", 8);
return rc;
}
@@ -422,11 +421,11 @@ 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 *)rqst->rq_iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
- if ((smb2_pdu->Command == SMB2_NEGOTIATE) ||
- (smb2_pdu->Command == SMB2_SESSION_SETUP) ||
- (smb2_pdu->Command == SMB2_OPLOCK_BREAK) ||
+ if ((shdr->Command == SMB2_NEGOTIATE) ||
+ (shdr->Command == SMB2_SESSION_SETUP) ||
+ (shdr->Command == SMB2_OPLOCK_BREAK) ||
(!server->session_estab))
return 0;
@@ -436,17 +435,17 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
*/
/* Do not need to verify session setups with signature "BSRSPYL " */
- if (memcmp(smb2_pdu->Signature, "BSRSPYL ", 8) == 0)
+ if (memcmp(shdr->Signature, "BSRSPYL ", 8) == 0)
cifs_dbg(FYI, "dummy signature received for smb command 0x%x\n",
- smb2_pdu->Command);
+ shdr->Command);
/*
* Save off the origiginal signature so we can modify the smb and check
* our calculated signature against what the server sent.
*/
- memcpy(server_response_sig, smb2_pdu->Signature, SMB2_SIGNATURE_SIZE);
+ memcpy(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE);
- memset(smb2_pdu->Signature, 0, SMB2_SIGNATURE_SIZE);
+ memset(shdr->Signature, 0, SMB2_SIGNATURE_SIZE);
mutex_lock(&server->srv_mutex);
rc = server->ops->calc_signature(rqst, server);
@@ -455,8 +454,7 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
if (rc)
return rc;
- if (memcmp(server_response_sig, smb2_pdu->Signature,
- SMB2_SIGNATURE_SIZE))
+ if (memcmp(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE))
return -EACCES;
else
return 0;
@@ -467,18 +465,19 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
* and when srv_mutex is held.
*/
static inline void
-smb2_seq_num_into_buf(struct TCP_Server_Info *server, struct smb2_hdr *hdr)
+smb2_seq_num_into_buf(struct TCP_Server_Info *server,
+ struct smb2_sync_hdr *shdr)
{
- unsigned int i, num = le16_to_cpu(hdr->CreditCharge);
+ unsigned int i, num = le16_to_cpu(shdr->CreditCharge);
- hdr->MessageId = get_next_mid64(server);
+ shdr->MessageId = get_next_mid64(server);
/* skip message numbers according to CreditCharge field */
for (i = 1; i < num; i++)
get_next_mid(server);
}
static struct mid_q_entry *
-smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer,
+smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr,
struct TCP_Server_Info *server)
{
struct mid_q_entry *temp;
@@ -493,9 +492,9 @@ smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer,
return temp;
else {
memset(temp, 0, sizeof(struct mid_q_entry));
- temp->mid = le64_to_cpu(smb_buffer->MessageId);
+ temp->mid = le64_to_cpu(shdr->MessageId);
temp->pid = current->pid;
- temp->command = smb_buffer->Command; /* Always LE */
+ temp->command = shdr->Command; /* Always LE */
temp->when_alloc = jiffies;
temp->server = server;
@@ -513,7 +512,7 @@ smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer,
}
static int
-smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf,
+smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr,
struct mid_q_entry **mid)
{
if (ses->server->tcpStatus == CifsExiting)
@@ -525,19 +524,19 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf,
}
if (ses->status == CifsNew) {
- if ((buf->Command != SMB2_SESSION_SETUP) &&
- (buf->Command != SMB2_NEGOTIATE))
+ if ((shdr->Command != SMB2_SESSION_SETUP) &&
+ (shdr->Command != SMB2_NEGOTIATE))
return -EAGAIN;
/* else ok - we are setting up session */
}
if (ses->status == CifsExiting) {
- if (buf->Command != SMB2_LOGOFF)
+ if (shdr->Command != SMB2_LOGOFF)
return -EAGAIN;
/* else ok - we are shutting down the session */
}
- *mid = smb2_mid_entry_alloc(buf, ses->server);
+ *mid = smb2_mid_entry_alloc(shdr, ses->server);
if (*mid == NULL)
return -ENOMEM;
spin_lock(&GlobalMid_Lock);
@@ -576,12 +575,12 @@ struct mid_q_entry *
smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
{
int rc;
- struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
struct mid_q_entry *mid;
- smb2_seq_num_into_buf(ses->server, hdr);
+ smb2_seq_num_into_buf(ses->server, shdr);
- rc = smb2_get_mid_entry(ses, hdr, &mid);
+ rc = smb2_get_mid_entry(ses, shdr, &mid);
if (rc)
return ERR_PTR(rc);
rc = smb2_sign_rqst(rqst, ses->server);
@@ -596,12 +595,12 @@ struct mid_q_entry *
smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
{
int rc;
- struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
+ struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
struct mid_q_entry *mid;
- smb2_seq_num_into_buf(server, hdr);
+ smb2_seq_num_into_buf(server, shdr);
- mid = smb2_mid_entry_alloc(hdr, server);
+ mid = smb2_mid_entry_alloc(shdr, server);
if (mid == NULL)
return ERR_PTR(-ENOMEM);
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-13 01:08:00 +0000