Merge commit 'release-4-0-0alpha15' into master4-tmp

[kai/samba-autobuild/.git] / source3 / smbd / smb2_break.c

diff --git a/source3/smbd/smb2_break.c b/source3/smbd/smb2_break.c
index 29c55fccf6ac766ff356d00aa16a68dcc2f626ad..5d5ab4139d90023073c10bad881a3c09d352af47 100644 (file)
--- a/source3/smbd/smb2_break.c
+++ b/source3/smbd/smb2_break.c
@@ -3,6 +3,7 @@
    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
@@ -19,8 +20,10 @@
 */
 
 #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,
@@ -56,6 +59,12 @@ NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req)
        }
 
        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);
+       }
+
        /* 0x03 1 bytes reserved */
        /* 0x04 4 bytes reserved */
        in_file_id_persistent           = BVAL(inbody, 0x08);
@@ -63,7 +72,7 @@ NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req)
 
        if (req->compat_chain_fsp) {
                /* skip check */
-       } else if (in_file_id_persistent != 0) {
+       } else if (in_file_id_persistent != in_file_id_volatile) {
                return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
        }
 
@@ -77,11 +86,7 @@ NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req)
        }
        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)
@@ -127,7 +132,7 @@ 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,
@@ -145,7 +150,7 @@ static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq)
 
 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,
@@ -158,7 +163,10 @@ static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
        struct smbd_smb2_oplock_break_state *state;
        struct smb_request *smbreq;
        connection_struct *conn = smb2req->tcon->compat_conn;
-       files_struct *fsp;
+       files_struct *fsp = NULL;
+       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);
@@ -168,8 +176,10 @@ static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
        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: file_id[0x%016llX] "
+               "samba level %d\n",
+               (unsigned long long)in_file_id_volatile,
+               oplocklevel));
 
        smbreq = smbd_smb2_fake_smb_request(smb2req);
        if (tevent_req_nomem(smbreq, req)) {
@@ -190,7 +200,37 @@ static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
                return tevent_req_post(req, ev);
        }
 
-       tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
+       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 ((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 (!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");
+       }
+
+       reply_to_oplock_break_requests(fsp);
+
+       tevent_req_done(req);
        return tevent_req_post(req, ev);
 }
 
@@ -212,3 +252,31 @@ static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req,
        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));
+       }
+}