Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
+ Copyright (C) Jeremy Allison 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
-#include "../source4/libcli/smb2/smb2_constants.h"
+#include "../libcli/smb/smb_common.h"
+#include "../lib/util/tevent_ntstatus.h"
static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
- uint8_t in_oplock_level,
- uint64_t in_file_id_volatile);
+ struct files_struct *in_fsp,
+ uint8_t in_oplock_level);
static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req,
uint8_t *out_oplock_level);
static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq);
NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req)
{
- const uint8_t *inhdr;
+ NTSTATUS status;
const uint8_t *inbody;
int i = req->current_idx;
- size_t expected_body_size = 0x18;
- size_t body_size;
uint8_t in_oplock_level;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
+ struct files_struct *in_fsp;
struct tevent_req *subreq;
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ status = smbd_smb2_request_verify_sizes(req, 0x18);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
}
-
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
+ in_oplock_level = CVAL(inbody, 0x02);
+
+ if (in_oplock_level != SMB2_OPLOCK_LEVEL_NONE &&
+ in_oplock_level != SMB2_OPLOCK_LEVEL_II) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
- in_oplock_level = CVAL(inbody, 0x02);
/* 0x03 1 bytes reserved */
/* 0x04 4 bytes reserved */
in_file_id_persistent = BVAL(inbody, 0x08);
in_file_id_volatile = BVAL(inbody, 0x10);
- if (req->compat_chain_fsp) {
- /* skip check */
- } else if (in_file_id_persistent != 0) {
+ in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
+ if (in_fsp == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
}
- subreq = smbd_smb2_oplock_break_send(req,
- req->sconn->smb2.event_ctx,
- req,
- in_oplock_level,
- in_file_id_volatile);
+ subreq = smbd_smb2_oplock_break_send(req, req->sconn->smb2.event_ctx,
+ req, in_fsp, in_oplock_level);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
tevent_req_set_callback(subreq, smbd_smb2_request_oplock_break_done, req);
- if (tevent_req_is_in_progress(subreq)) {
- return smbd_smb2_request_pending_queue(req);
- }
-
- return NT_STATUS_OK;
+ return smbd_smb2_request_pending_queue(req, subreq);
}
static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq)
SSVAL(outbody.data, 0x00, 0x18); /* struct size */
SCVAL(outbody.data, 0x02,
- out_oplock_level); /* oplock level */
+ out_oplock_level); /* SMB2 oplock level */
SCVAL(outbody.data, 0x03, 0); /* reserved */
SIVAL(outbody.data, 0x04, 0); /* reserved */
SBVAL(outbody.data, 0x08,
struct smbd_smb2_oplock_break_state {
struct smbd_smb2_request *smb2req;
- uint8_t out_oplock_level;
+ uint8_t out_oplock_level; /* SMB2 oplock level. */
};
static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
- uint8_t in_oplock_level,
- uint64_t in_file_id_volatile)
+ struct files_struct *fsp,
+ uint8_t in_oplock_level)
{
struct tevent_req *req;
struct smbd_smb2_oplock_break_state *state;
struct smb_request *smbreq;
- connection_struct *conn = smb2req->tcon->compat_conn;
- files_struct *fsp;
+ int oplocklevel = map_smb2_oplock_levels_to_samba(in_oplock_level);
+ bool break_to_none = (oplocklevel == NO_OPLOCK);
+ bool result;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_oplock_break_state);
state->smb2req = smb2req;
state->out_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
- DEBUG(10,("smbd_smb2_oplock_break_send: file_id[0x%016llX]\n",
- (unsigned long long)in_file_id_volatile));
+ DEBUG(10,("smbd_smb2_oplock_break_send: %s - fnum[%d] "
+ "samba level %d\n",
+ fsp_str_dbg(fsp), fsp->fnum,
+ oplocklevel));
smbreq = smbd_smb2_fake_smb_request(smb2req);
if (tevent_req_nomem(smbreq, req)) {
return tevent_req_post(req, ev);
}
- fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
- if (fsp == NULL) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
+ DEBUG(5,("smbd_smb2_oplock_break_send: got SMB2 oplock break (%u) from client "
+ "for file %s fnum = %d\n",
+ (unsigned int)in_oplock_level,
+ fsp_str_dbg(fsp),
+ fsp->fnum ));
+
+ /* Are we awaiting a break message ? */
+ if (fsp->oplock_timeout == NULL) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_OPLOCK_PROTOCOL);
return tevent_req_post(req, ev);
}
- if (conn != fsp->conn) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
+
+ if ((fsp->sent_oplock_break == BREAK_TO_NONE_SENT) ||
+ (break_to_none)) {
+ result = remove_oplock(fsp);
+ state->out_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
+ } else {
+ result = downgrade_oplock(fsp);
+ state->out_oplock_level = SMB2_OPLOCK_LEVEL_II;
}
- if (smb2req->session->vuid != fsp->vuid) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
+
+ if (!result) {
+ DEBUG(0, ("smbd_smb2_oplock_break_send: error in removing "
+ "oplock on file %s\n", fsp_str_dbg(fsp)));
+ /* Hmmm. Is this panic justified? */
+ smb_panic("internal tdb error");
}
- tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
+ reply_to_oplock_break_requests(fsp);
+
+ tevent_req_done(req);
return tevent_req_post(req, ev);
}
tevent_req_received(req);
return NT_STATUS_OK;
}
+
+/*********************************************************
+ Create and send an asynchronous
+ SMB2 OPLOCK_BREAK_NOTIFICATION.
+*********************************************************/
+
+void send_break_message_smb2(files_struct *fsp, int level)
+{
+ uint8_t smb2_oplock_level = (level == OPLOCKLEVEL_II) ?
+ SMB2_OPLOCK_LEVEL_II :
+ SMB2_OPLOCK_LEVEL_NONE;
+ NTSTATUS status;
+
+ DEBUG(10,("send_break_message_smb2: sending oplock break "
+ "for file %s, fnum = %d, smb2 level %u\n",
+ fsp_str_dbg(fsp),
+ fsp->fnum,
+ (unsigned int)smb2_oplock_level ));
+
+ status = smbd_smb2_send_oplock_break(fsp->conn->sconn,
+ (uint64_t)fsp->fnum,
+ (uint64_t)fsp->fnum,
+ smb2_oplock_level);
+ if (!NT_STATUS_IS_OK(status)) {
+ smbd_server_connection_terminate(fsp->conn->sconn,
+ nt_errstr(status));
+ }
+}
git.samba.org / ddiss / samba.git / blobdiff