mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 03:40:52 +07:00
CIFS: Send RFC1001 length in a separate iov
In order to simplify further encryption support we need to separate RFC1001 length and SMB2 header when sending a request. Put the length field in iov[0] and the rest of the packet into following iovs. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Pavel Shilovsky
Steve French
parent
fb2036d817
commit
738f9de5cd
@ -75,24 +75,20 @@ int __cifs_calc_signature(struct smb_rqst *rqst,
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struct kvec *iov = rqst->rq_iov;
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int n_vec = rqst->rq_nvec;
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for (i = 0; i < n_vec; i++) {
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if (n_vec < 2 || iov[0].iov_len != 4)
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return -EIO;
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for (i = 1; i < n_vec; i++) {
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if (iov[i].iov_len == 0)
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continue;
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if (iov[i].iov_base == NULL) {
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cifs_dbg(VFS, "null iovec entry\n");
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return -EIO;
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}
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/* The first entry includes a length field (which does not get
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signed that occupies the first 4 bytes before the header */
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if (i == 0) {
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if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
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break; /* nothing to sign or corrupt header */
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rc = crypto_shash_update(shash,
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iov[i].iov_base + 4, iov[i].iov_len - 4);
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} else {
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rc = crypto_shash_update(shash,
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iov[i].iov_base, iov[i].iov_len);
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}
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if (i == 1 && iov[1].iov_len <= 4)
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break; /* nothing to sign or corrupt header */
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rc = crypto_shash_update(shash,
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iov[i].iov_base, iov[i].iov_len);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not update with payload\n",
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__func__);
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@ -168,6 +164,10 @@ int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
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char smb_signature[20];
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struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
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if (rqst->rq_iov[0].iov_len != 4 ||
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rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base)
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return -EIO;
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if ((cifs_pdu == NULL) || (server == NULL))
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return -EINVAL;
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@ -209,12 +209,14 @@ int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
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int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
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__u32 *pexpected_response_sequence_number)
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{
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struct kvec iov;
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struct kvec iov[2];
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iov.iov_base = cifs_pdu;
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iov.iov_len = be32_to_cpu(cifs_pdu->smb_buf_length) + 4;
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iov[0].iov_base = cifs_pdu;
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iov[0].iov_len = 4;
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iov[1].iov_base = (char *)cifs_pdu + 4;
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iov[1].iov_len = be32_to_cpu(cifs_pdu->smb_buf_length);
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return cifs_sign_smbv(&iov, 1, server,
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return cifs_sign_smbv(iov, 2, server,
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pexpected_response_sequence_number);
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}
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@ -227,6 +229,10 @@ int cifs_verify_signature(struct smb_rqst *rqst,
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char what_we_think_sig_should_be[20];
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struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
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if (rqst->rq_iov[0].iov_len != 4 ||
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rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base)
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return -EIO;
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if (cifs_pdu == NULL || server == NULL)
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return -EINVAL;
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@ -1119,7 +1119,7 @@ struct cifs_readdata {
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int (*read_into_pages)(struct TCP_Server_Info *server,
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struct cifs_readdata *rdata,
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unsigned int len);
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struct kvec iov;
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struct kvec iov[2];
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unsigned int pagesz;
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unsigned int tailsz;
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unsigned int credits;
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@ -708,9 +708,9 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
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{
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ECHO_REQ *smb;
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int rc = 0;
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struct kvec iov;
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struct smb_rqst rqst = { .rq_iov = &iov,
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.rq_nvec = 1 };
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struct kvec iov[2];
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struct smb_rqst rqst = { .rq_iov = iov,
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.rq_nvec = 2 };
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cifs_dbg(FYI, "In echo request\n");
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@ -725,8 +725,11 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
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put_bcc(1, &smb->hdr);
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smb->Data[0] = 'a';
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inc_rfc1001_len(smb, 3);
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iov.iov_base = smb;
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iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
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iov[0].iov_len = 4;
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iov[0].iov_base = smb;
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iov[1].iov_len = get_rfc1002_length(smb);
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iov[1].iov_base = (char *)smb + 4;
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rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback,
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server, CIFS_ASYNC_OP | CIFS_ECHO_OP);
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@ -1509,10 +1512,12 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
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}
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/* set up first iov for signature check */
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rdata->iov.iov_base = buf;
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rdata->iov.iov_len = server->total_read;
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cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
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rdata->iov.iov_base, rdata->iov.iov_len);
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rdata->iov[0].iov_base = buf;
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rdata->iov[0].iov_len = 4;
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rdata->iov[1].iov_base = buf + 4;
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rdata->iov[1].iov_len = server->total_read - 4;
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cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n",
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rdata->iov[0].iov_base, server->total_read);
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/* how much data is in the response? */
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data_len = server->ops->read_data_length(buf);
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@ -1545,8 +1550,8 @@ cifs_readv_callback(struct mid_q_entry *mid)
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struct cifs_readdata *rdata = mid->callback_data;
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struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
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struct TCP_Server_Info *server = tcon->ses->server;
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struct smb_rqst rqst = { .rq_iov = &rdata->iov,
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.rq_nvec = 1,
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struct smb_rqst rqst = { .rq_iov = rdata->iov,
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.rq_nvec = 2,
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.rq_pages = rdata->pages,
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.rq_npages = rdata->nr_pages,
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.rq_pagesz = rdata->pagesz,
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@ -1601,8 +1606,8 @@ cifs_async_readv(struct cifs_readdata *rdata)
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READ_REQ *smb = NULL;
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int wct;
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struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
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struct smb_rqst rqst = { .rq_iov = &rdata->iov,
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.rq_nvec = 1 };
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struct smb_rqst rqst = { .rq_iov = rdata->iov,
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.rq_nvec = 2 };
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cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
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__func__, rdata->offset, rdata->bytes);
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@ -1642,8 +1647,10 @@ cifs_async_readv(struct cifs_readdata *rdata)
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}
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/* 4 for RFC1001 length + 1 for BCC */
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rdata->iov.iov_base = smb;
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rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
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rdata->iov[0].iov_base = smb;
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rdata->iov[0].iov_len = 4;
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rdata->iov[1].iov_base = (char *)smb + 4;
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rdata->iov[1].iov_len = get_rfc1002_length(smb);
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kref_get(&rdata->refcount);
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rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive,
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@ -2096,7 +2103,7 @@ cifs_async_writev(struct cifs_writedata *wdata,
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WRITE_REQ *smb = NULL;
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int wct;
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struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
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struct kvec iov;
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struct kvec iov[2];
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struct smb_rqst rqst = { };
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if (tcon->ses->capabilities & CAP_LARGE_FILES) {
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@ -2129,11 +2136,13 @@ cifs_async_writev(struct cifs_writedata *wdata,
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cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
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/* 4 for RFC1001 length + 1 for BCC */
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iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1;
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iov.iov_base = smb;
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iov[0].iov_len = 4;
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iov[0].iov_base = smb;
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iov[1].iov_len = get_rfc1002_length(smb) + 1;
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iov[1].iov_base = (char *)smb + 4;
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rqst.rq_iov = &iov;
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rqst.rq_nvec = 1;
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rqst.rq_iov = iov;
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rqst.rq_nvec = 2;
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rqst.rq_pages = wdata->pages;
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rqst.rq_npages = wdata->nr_pages;
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rqst.rq_pagesz = wdata->pagesz;
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@ -2154,7 +2163,7 @@ cifs_async_writev(struct cifs_writedata *wdata,
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(struct smb_com_writex_req *)smb;
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inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5);
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put_bcc(wdata->bytes + 5, &smbw->hdr);
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iov.iov_len += 4; /* pad bigger by four bytes */
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iov[1].iov_len += 4; /* pad bigger by four bytes */
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}
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kref_get(&wdata->refcount);
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@ -2047,9 +2047,9 @@ SMB2_echo(struct TCP_Server_Info *server)
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{
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struct smb2_echo_req *req;
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int rc = 0;
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struct kvec iov;
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struct smb_rqst rqst = { .rq_iov = &iov,
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.rq_nvec = 1 };
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struct kvec iov[2];
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struct smb_rqst rqst = { .rq_iov = iov,
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.rq_nvec = 2 };
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cifs_dbg(FYI, "In echo request\n");
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@ -2065,9 +2065,11 @@ SMB2_echo(struct TCP_Server_Info *server)
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req->hdr.sync_hdr.CreditRequest = cpu_to_le16(1);
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iov.iov_base = (char *)req;
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/* 4 for rfc1002 length field */
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iov.iov_len = get_rfc1002_length(req) + 4;
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iov[0].iov_len = 4;
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iov[0].iov_base = (char *)req;
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iov[1].iov_len = get_rfc1002_length(req);
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iov[1].iov_base = (char *)req + 4;
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rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, server,
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CIFS_ECHO_OP);
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@ -2123,8 +2125,9 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
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* have the end_of_chain boolean set to true.
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*/
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static int
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smb2_new_read_req(struct kvec *iov, struct cifs_io_parms *io_parms,
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unsigned int remaining_bytes, int request_type)
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smb2_new_read_req(void **buf, unsigned int *total_len,
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struct cifs_io_parms *io_parms, unsigned int remaining_bytes,
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int request_type)
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{
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int rc = -EACCES;
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struct smb2_read_req *req = NULL;
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@ -2172,9 +2175,9 @@ smb2_new_read_req(struct kvec *iov, struct cifs_io_parms *io_parms,
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else
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req->RemainingBytes = 0;
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iov[0].iov_base = (char *)req;
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*buf = req;
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/* 4 for rfc1002 length field */
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iov[0].iov_len = get_rfc1002_length(req) + 4;
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*total_len = get_rfc1002_length(req) + 4;
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return rc;
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}
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@ -2184,10 +2187,11 @@ smb2_readv_callback(struct mid_q_entry *mid)
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struct cifs_readdata *rdata = mid->callback_data;
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struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
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struct TCP_Server_Info *server = tcon->ses->server;
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struct smb2_sync_hdr *shdr = get_sync_hdr(rdata->iov.iov_base);
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struct smb2_sync_hdr *shdr =
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(struct smb2_sync_hdr *)rdata->iov[1].iov_base;
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unsigned int credits_received = 1;
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struct smb_rqst rqst = { .rq_iov = &rdata->iov,
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.rq_nvec = 1,
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struct smb_rqst rqst = { .rq_iov = rdata->iov,
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.rq_nvec = 2,
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.rq_pages = rdata->pages,
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.rq_npages = rdata->nr_pages,
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.rq_pagesz = rdata->pagesz,
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@ -2238,7 +2242,7 @@ smb2_readv_callback(struct mid_q_entry *mid)
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add_credits(server, credits_received, 0);
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}
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/* smb2_async_readv - send an async write, and set up mid to handle result */
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/* smb2_async_readv - send an async read, and set up mid to handle result */
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int
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smb2_async_readv(struct cifs_readdata *rdata)
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{
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@ -2246,9 +2250,10 @@ smb2_async_readv(struct cifs_readdata *rdata)
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char *buf;
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struct smb2_sync_hdr *shdr;
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struct cifs_io_parms io_parms;
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struct smb_rqst rqst = { .rq_iov = &rdata->iov,
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.rq_nvec = 1 };
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struct smb_rqst rqst = { .rq_iov = rdata->iov,
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.rq_nvec = 2 };
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struct TCP_Server_Info *server;
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unsigned int total_len;
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cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
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__func__, rdata->offset, rdata->bytes);
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@ -2262,7 +2267,7 @@ smb2_async_readv(struct cifs_readdata *rdata)
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server = io_parms.tcon->ses->server;
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rc = smb2_new_read_req(&rdata->iov, &io_parms, 0, 0);
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rc = smb2_new_read_req((void **) &buf, &total_len, &io_parms, 0, 0);
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if (rc) {
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if (rc == -EAGAIN && rdata->credits) {
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/* credits was reset by reconnect */
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@ -2275,10 +2280,12 @@ smb2_async_readv(struct cifs_readdata *rdata)
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return rc;
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}
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buf = rdata->iov.iov_base;
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shdr = get_sync_hdr(buf);
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/* 4 for rfc1002 length field */
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rdata->iov.iov_len = get_rfc1002_length(rdata->iov.iov_base) + 4;
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rdata->iov[0].iov_len = 4;
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rdata->iov[0].iov_base = buf;
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rdata->iov[1].iov_len = total_len - 4;
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rdata->iov[1].iov_base = buf + 4;
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if (rdata->credits) {
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shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes,
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@ -2314,12 +2321,17 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
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struct smb2_sync_hdr *shdr;
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struct kvec iov[1];
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struct kvec rsp_iov;
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unsigned int total_len;
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char *req;
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*nbytes = 0;
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rc = smb2_new_read_req(iov, io_parms, 0, 0);
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rc = smb2_new_read_req((void **)&req, &total_len, io_parms, 0, 0);
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if (rc)
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return rc;
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iov[0].iov_base = buf;
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iov[0].iov_len = total_len;
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rc = SendReceive2(xid, io_parms->tcon->ses, iov, 1,
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&resp_buftype, CIFS_LOG_ERROR, &rsp_iov);
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cifs_small_buf_release(iov[0].iov_base);
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@ -2424,8 +2436,8 @@ smb2_async_writev(struct cifs_writedata *wdata,
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struct smb2_sync_hdr *shdr;
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struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
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struct TCP_Server_Info *server = tcon->ses->server;
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struct kvec iov;
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struct smb_rqst rqst;
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struct kvec iov[2];
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struct smb_rqst rqst = { };
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rc = small_smb2_init(SMB2_WRITE, tcon, (void **) &req);
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if (rc) {
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@ -2455,11 +2467,13 @@ smb2_async_writev(struct cifs_writedata *wdata,
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req->RemainingBytes = 0;
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/* 4 for rfc1002 length field and 1 for Buffer */
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iov.iov_len = get_rfc1002_length(req) + 4 - 1;
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iov.iov_base = req;
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iov[0].iov_len = 4;
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iov[0].iov_base = req;
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iov[1].iov_len = get_rfc1002_length(req) - 1;
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iov[1].iov_base = (char *)req + 4;
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rqst.rq_iov = &iov;
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rqst.rq_nvec = 1;
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rqst.rq_iov = iov;
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rqst.rq_nvec = 2;
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rqst.rq_pages = wdata->pages;
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rqst.rq_npages = wdata->nr_pages;
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rqst.rq_pagesz = wdata->pagesz;
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|
||||
@ -138,7 +138,7 @@ 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 = get_sync_hdr(iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base;
|
||||
struct cifs_ses *ses;
|
||||
|
||||
ses = smb2_find_smb_ses(shdr, server);
|
||||
@ -355,7 +355,7 @@ 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 = get_sync_hdr(iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base;
|
||||
struct cifs_ses *ses;
|
||||
|
||||
ses = smb2_find_smb_ses(shdr, server);
|
||||
@ -400,7 +400,8 @@ static int
|
||||
smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server)
|
||||
{
|
||||
int rc = 0;
|
||||
struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr =
|
||||
(struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base;
|
||||
|
||||
if (!(shdr->Flags & SMB2_FLAGS_SIGNED) ||
|
||||
server->tcpStatus == CifsNeedNegotiate)
|
||||
@ -421,7 +422,8 @@ 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 = get_sync_hdr(rqst->rq_iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr =
|
||||
(struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base;
|
||||
|
||||
if ((shdr->Command == SMB2_NEGOTIATE) ||
|
||||
(shdr->Command == SMB2_SESSION_SETUP) ||
|
||||
@ -550,12 +552,14 @@ 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 };
|
||||
struct kvec iov[2];
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = 2 };
|
||||
|
||||
iov.iov_base = (char *)mid->resp_buf;
|
||||
iov.iov_len = get_rfc1002_length(mid->resp_buf) + 4;
|
||||
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;
|
||||
|
||||
dump_smb(mid->resp_buf, min_t(u32, 80, len));
|
||||
/* convert the length into a more usable form */
|
||||
@ -575,7 +579,8 @@ struct mid_q_entry *
|
||||
smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc;
|
||||
struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr =
|
||||
(struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
smb2_seq_num_into_buf(ses->server, shdr);
|
||||
@ -595,7 +600,8 @@ struct mid_q_entry *
|
||||
smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc;
|
||||
struct smb2_sync_hdr *shdr = get_sync_hdr(rqst->rq_iov[0].iov_base);
|
||||
struct smb2_sync_hdr *shdr =
|
||||
(struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
smb2_seq_num_into_buf(server, shdr);
|
||||
|
||||
@ -245,8 +245,12 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
if (n_vec < 2)
|
||||
return -EIO;
|
||||
|
||||
cifs_dbg(FYI, "Sending smb: smb_len=%u\n", smb_buf_length);
|
||||
dump_smb(iov[0].iov_base, iov[0].iov_len);
|
||||
dump_smb(iov[1].iov_base, iov[1].iov_len);
|
||||
|
||||
/* cork the socket */
|
||||
kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
|
||||
@ -321,12 +325,14 @@ int
|
||||
smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer,
|
||||
unsigned int smb_buf_length)
|
||||
{
|
||||
struct kvec iov;
|
||||
struct kvec iov[2];
|
||||
|
||||
iov.iov_base = smb_buffer;
|
||||
iov.iov_len = smb_buf_length + 4;
|
||||
iov[0].iov_base = smb_buffer;
|
||||
iov[0].iov_len = 4;
|
||||
iov[1].iov_base = (char *)smb_buffer + 4;
|
||||
iov[1].iov_len = smb_buf_length;
|
||||
|
||||
return smb_sendv(server, &iov, 1);
|
||||
return smb_sendv(server, iov, 2);
|
||||
}
|
||||
|
||||
static int
|
||||
@ -454,6 +460,10 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
if (rqst->rq_iov[0].iov_len != 4 ||
|
||||
rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base)
|
||||
return ERR_PTR(-EIO);
|
||||
|
||||
/* enable signing if server requires it */
|
||||
if (server->sign)
|
||||
hdr->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
||||
@ -477,8 +487,8 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
*/
|
||||
int
|
||||
cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst,
|
||||
mid_receive_t *receive, mid_callback_t *callback,
|
||||
void *cbdata, const int flags)
|
||||
mid_receive_t *receive, mid_callback_t *callback, void *cbdata,
|
||||
const int flags)
|
||||
{
|
||||
int rc, timeout, optype;
|
||||
struct mid_q_entry *mid;
|
||||
@ -613,13 +623,15 @@ cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
|
||||
|
||||
/* convert the length into a more usable form */
|
||||
if (server->sign) {
|
||||
struct kvec iov;
|
||||
struct kvec iov[2];
|
||||
int rc = 0;
|
||||
struct smb_rqst rqst = { .rq_iov = &iov,
|
||||
.rq_nvec = 1 };
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = 2 };
|
||||
|
||||
iov.iov_base = mid->resp_buf;
|
||||
iov.iov_len = len;
|
||||
iov[0].iov_base = mid->resp_buf;
|
||||
iov[0].iov_len = 4;
|
||||
iov[1].iov_base = (char *)mid->resp_buf + 4;
|
||||
iov[1].iov_len = len - 4;
|
||||
/* FIXME: add code to kill session */
|
||||
rc = cifs_verify_signature(&rqst, server,
|
||||
mid->sequence_number);
|
||||
@ -639,6 +651,10 @@ cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
if (rqst->rq_iov[0].iov_len != 4 ||
|
||||
rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base)
|
||||
return ERR_PTR(-EIO);
|
||||
|
||||
rc = allocate_mid(ses, hdr, &mid);
|
||||
if (rc)
|
||||
return ERR_PTR(rc);
|
||||
@ -650,18 +666,16 @@ cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
|
||||
return mid;
|
||||
}
|
||||
|
||||
int
|
||||
SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
struct kvec *iov, int n_vec, int *resp_buf_type /* ret */,
|
||||
const int flags, struct kvec *resp_iov)
|
||||
static int
|
||||
cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
|
||||
struct smb_rqst *rqst, int *resp_buf_type, const int flags,
|
||||
struct kvec *resp_iov)
|
||||
{
|
||||
int rc = 0;
|
||||
int timeout, optype;
|
||||
struct mid_q_entry *midQ;
|
||||
char *buf = iov[0].iov_base;
|
||||
unsigned int credits = 1;
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = n_vec };
|
||||
char *buf;
|
||||
|
||||
timeout = flags & CIFS_TIMEOUT_MASK;
|
||||
optype = flags & CIFS_OP_MASK;
|
||||
@ -694,7 +708,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
|
||||
mutex_lock(&ses->server->srv_mutex);
|
||||
|
||||
midQ = ses->server->ops->setup_request(ses, &rqst);
|
||||
midQ = ses->server->ops->setup_request(ses, rqst);
|
||||
if (IS_ERR(midQ)) {
|
||||
mutex_unlock(&ses->server->srv_mutex);
|
||||
/* Update # of requests on wire to server */
|
||||
@ -704,7 +718,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
|
||||
midQ->mid_state = MID_REQUEST_SUBMITTED;
|
||||
cifs_in_send_inc(ses->server);
|
||||
rc = smb_sendv(ses->server, iov, n_vec);
|
||||
rc = smb_send_rqst(ses->server, rqst);
|
||||
cifs_in_send_dec(ses->server);
|
||||
cifs_save_when_sent(midQ);
|
||||
|
||||
@ -720,7 +734,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
|
||||
rc = wait_for_response(ses->server, midQ);
|
||||
if (rc != 0) {
|
||||
send_cancel(ses->server, &rqst, midQ);
|
||||
send_cancel(ses->server, rqst, midQ);
|
||||
spin_lock(&GlobalMid_Lock);
|
||||
if (midQ->mid_state == MID_REQUEST_SUBMITTED) {
|
||||
midQ->callback = DeleteMidQEntry;
|
||||
@ -766,6 +780,36 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
return rc;
|
||||
}
|
||||
|
||||
int
|
||||
SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
struct kvec *iov, int n_vec, int *resp_buf_type /* ret */,
|
||||
const int flags, struct kvec *resp_iov)
|
||||
{
|
||||
struct smb_rqst rqst;
|
||||
struct kvec *new_iov;
|
||||
int rc;
|
||||
|
||||
new_iov = kmalloc(sizeof(struct kvec) * (n_vec + 1), GFP_KERNEL);
|
||||
if (!new_iov)
|
||||
return -ENOMEM;
|
||||
|
||||
/* 1st iov is a RFC1001 length followed by the rest of the packet */
|
||||
memcpy(new_iov + 1, iov, (sizeof(struct kvec) * n_vec));
|
||||
|
||||
new_iov[0].iov_base = new_iov[1].iov_base;
|
||||
new_iov[0].iov_len = 4;
|
||||
new_iov[1].iov_base += 4;
|
||||
new_iov[1].iov_len -= 4;
|
||||
|
||||
memset(&rqst, 0, sizeof(struct smb_rqst));
|
||||
rqst.rq_iov = new_iov;
|
||||
rqst.rq_nvec = n_vec + 1;
|
||||
|
||||
rc = cifs_send_recv(xid, ses, &rqst, resp_buf_type, flags, resp_iov);
|
||||
kfree(new_iov);
|
||||
return rc;
|
||||
}
|
||||
|
||||
int
|
||||
SendReceive(const unsigned int xid, struct cifs_ses *ses,
|
||||
struct smb_hdr *in_buf, struct smb_hdr *out_buf,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user