Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Jeremy Allison 1998 - 2001
Copyright (C) Volker Lendecke 2005
-
+
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
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define DBGC_CLASS DBGC_LOCKING
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
-
-/****************************************************************************
- Get the number of current exclusive oplocks.
-****************************************************************************/
-
-int32 get_number_of_exclusive_open_oplocks(void)
-{
- return exclusive_oplocks_open;
-}
+#include "messages.h"
+#include "../librpc/gen_ndr/open_files.h"
/*
* helper function used by the kernel oplock backends to post the break message
/* Don't need to be root here as we're only ever
sending to ourselves. */
- messaging_send_buf(msg_ctx, procid_self(),
+ messaging_send_buf(msg_ctx, messaging_server_id(msg_ctx),
MSG_SMB_KERNEL_BREAK,
msg, MSG_SMB_KERNEL_BREAK_SIZE);
}
/****************************************************************************
- Attempt to set an oplock on a file. Always succeeds if kernel oplocks are
- disabled (just sets flags). Returns True if oplock set.
+ Attempt to set an oplock on a file. Succeeds if kernel oplocks are
+ disabled (just sets flags) and no byte-range locks in the file. Returns True
+ if oplock set.
****************************************************************************/
-bool set_file_oplock(files_struct *fsp, int oplock_type)
+NTSTATUS set_file_oplock(files_struct *fsp, int oplock_type)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+ bool use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;
+
+ if (fsp->oplock_type == LEVEL_II_OPLOCK) {
+ if (use_kernel &&
+ !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) {
+ DEBUG(10, ("Refusing level2 oplock, kernel oplocks "
+ "don't support them\n"));
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+ }
+
if ((fsp->oplock_type != NO_OPLOCK) &&
(fsp->oplock_type != FAKE_LEVEL_II_OPLOCK) &&
- koplocks &&
- !koplocks->ops->set_oplock(koplocks, fsp, oplock_type)) {
- return False;
+ use_kernel &&
+ !koplocks->ops->set_oplock(koplocks, fsp, oplock_type))
+ {
+ return map_nt_error_from_unix(errno);
}
fsp->oplock_type = oplock_type;
fsp->sent_oplock_break = NO_BREAK_SENT;
if (oplock_type == LEVEL_II_OPLOCK) {
- level_II_oplocks_open++;
+ sconn->oplocks.level_II_open++;
} else if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
- exclusive_oplocks_open++;
+ sconn->oplocks.exclusive_open++;
}
DEBUG(5,("set_file_oplock: granted oplock on file %s, %s/%lu, "
"tv_sec = %x, tv_usec = %x\n",
- fsp->fsp_name, file_id_string_tos(&fsp->file_id),
+ fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id, (int)fsp->open_time.tv_sec,
(int)fsp->open_time.tv_usec ));
- return True;
+ return NT_STATUS_OK;
}
/****************************************************************************
void release_file_oplock(files_struct *fsp)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+
if ((fsp->oplock_type != NO_OPLOCK) &&
(fsp->oplock_type != FAKE_LEVEL_II_OPLOCK) &&
koplocks) {
}
if (fsp->oplock_type == LEVEL_II_OPLOCK) {
- level_II_oplocks_open--;
+ sconn->oplocks.level_II_open--;
} else if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
- exclusive_oplocks_open--;
+ sconn->oplocks.exclusive_open--;
}
- SMB_ASSERT(exclusive_oplocks_open>=0);
- SMB_ASSERT(level_II_oplocks_open>=0);
+ SMB_ASSERT(sconn->oplocks.exclusive_open>=0);
+ SMB_ASSERT(sconn->oplocks.level_II_open>=0);
if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
/* This doesn't matter for close. */
fsp->sent_oplock_break = NO_BREAK_SENT;
flush_write_cache(fsp, OPLOCK_RELEASE_FLUSH);
+ delete_write_cache(fsp);
TALLOC_FREE(fsp->oplock_timeout);
}
static void downgrade_file_oplock(files_struct *fsp)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+
if (!EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
DEBUG(0, ("trying to downgrade an already-downgraded oplock!\n"));
return;
koplocks->ops->release_oplock(koplocks, fsp, LEVEL_II_OPLOCK);
}
fsp->oplock_type = LEVEL_II_OPLOCK;
- exclusive_oplocks_open--;
- level_II_oplocks_open++;
+ sconn->oplocks.exclusive_open--;
+ sconn->oplocks.level_II_open++;
fsp->sent_oplock_break = NO_BREAK_SENT;
+
+ TALLOC_FREE(fsp->oplock_timeout);
}
/****************************************************************************
struct share_mode_lock *lck;
/* Remove the oplock flag from the sharemode. */
- lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
- NULL);
+ lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("remove_oplock: failed to lock share entry for "
- "file %s\n", fsp->fsp_name ));
+ "file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = remove_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("remove_oplock: failed to remove share oplock for "
- "file %s fnum %d, %s\n",
- fsp->fsp_name, fsp->fnum, file_id_string_tos(&fsp->file_id)));
+ "file %s, %s, %s\n",
+ fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
+ file_id_string_tos(&fsp->file_id)));
}
release_file_oplock(fsp);
TALLOC_FREE(lck);
bool ret;
struct share_mode_lock *lck;
- lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
- NULL);
+ lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("downgrade_oplock: failed to lock share entry for "
- "file %s\n", fsp->fsp_name ));
+ "file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = downgrade_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("downgrade_oplock: failed to downgrade share oplock "
- "for file %s fnum %d, file_id %s\n",
- fsp->fsp_name, fsp->fnum, file_id_string_tos(&fsp->file_id)));
+ "for file %s, %s, file_id %s\n",
+ fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
+ file_id_string_tos(&fsp->file_id)));
}
downgrade_file_oplock(fsp);
return ret;
}
-/*
- * Some kernel oplock implementations handle the notification themselves.
- */
-bool should_notify_deferred_opens()
-{
- return !(koplocks &&
- (koplocks->flags & KOPLOCKS_DEFERRED_OPEN_NOTIFICATION));
-}
-
/****************************************************************************
Set up an oplock break message.
****************************************************************************/
-static char *new_break_smb_message(TALLOC_CTX *mem_ctx,
- files_struct *fsp, uint8 cmd)
-{
- char *result = TALLOC_ARRAY(mem_ctx, char, smb_size + 8*2 + 0);
-
- if (result == NULL) {
- DEBUG(0, ("talloc failed\n"));
- return NULL;
- }
+#define SMB1_BREAK_MESSAGE_LENGTH (smb_size + 8*2)
+static void new_break_message_smb1(files_struct *fsp, int cmd,
+ char result[SMB1_BREAK_MESSAGE_LENGTH])
+{
memset(result,'\0',smb_size);
srv_set_message(result,8,0,true);
SCVAL(result,smb_com,SMBlockingX);
SSVAL(result,smb_vwv2,fsp->fnum);
SCVAL(result,smb_vwv3,LOCKING_ANDX_OPLOCK_RELEASE);
SCVAL(result,smb_vwv3+1,cmd);
- return result;
}
/****************************************************************************
Ensure that we have a valid oplock.
****************************************************************************/
-static files_struct *initial_break_processing(struct file_id id, unsigned long file_id)
+static files_struct *initial_break_processing(
+ struct smbd_server_connection *sconn, struct file_id id,
+ unsigned long file_id)
{
files_struct *fsp = NULL;
dbgtext( "initial_break_processing: called for %s/%u\n",
file_id_string_tos(&id), (int)file_id);
dbgtext( "Current oplocks_open (exclusive = %d, levelII = %d)\n",
- exclusive_oplocks_open, level_II_oplocks_open );
+ sconn->oplocks.exclusive_open,
+ sconn->oplocks.level_II_open);
}
/*
* we have an oplock on it.
*/
- fsp = file_find_dif(id, file_id);
+ fsp = file_find_dif(sconn, id, file_id);
if(fsp == NULL) {
/* The file could have been closed in the meantime - return success. */
if( DEBUGLVL( 3 ) ) {
dbgtext( "initial_break_processing: cannot find open file with " );
- dbgtext( "file_id %s gen_id = %lu", file_id_string_tos(&id), file_id);
+ dbgtext( "file_id %s gen_id = %lu, ", file_id_string_tos(&id), file_id);
dbgtext( "allowing break to succeed.\n" );
}
return NULL;
if(fsp->oplock_type == NO_OPLOCK) {
if( DEBUGLVL( 3 ) ) {
- dbgtext( "initial_break_processing: file %s ", fsp->fsp_name );
+ dbgtext( "initial_break_processing: file %s ",
+ fsp_str_dbg(fsp));
dbgtext( "(file_id = %s gen_id = %lu) has no oplock.\n",
file_id_string_tos(&id), fsp->fh->gen_id );
dbgtext( "Allowing break to succeed regardless.\n" );
return fsp;
}
-static void oplock_timeout_handler(struct event_context *ctx,
- struct timed_event *te,
+static void oplock_timeout_handler(struct tevent_context *ctx,
+ struct tevent_timer *te,
struct timeval now,
void *private_data)
{
files_struct *fsp = (files_struct *)private_data;
+ SMB_ASSERT(fsp->sent_oplock_break != NO_BREAK_SENT);
+
/* Remove the timed event handler. */
TALLOC_FREE(fsp->oplock_timeout);
- DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n", fsp->fsp_name));
- global_client_failed_oplock_break = True;
+ DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n",
+ fsp_str_dbg(fsp)));
remove_oplock(fsp);
- reply_to_oplock_break_requests(fsp);
}
/*******************************************************************
static void add_oplock_timeout_handler(files_struct *fsp)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+
/*
* If kernel oplocks already notifies smbds when an oplock break times
* out, just return.
}
fsp->oplock_timeout =
- event_add_timed(smbd_event_context(), NULL,
- timeval_current_ofs(OPLOCK_BREAK_TIMEOUT, 0),
- oplock_timeout_handler, fsp);
+ tevent_add_timer(fsp->conn->sconn->ev_ctx, fsp,
+ timeval_current_ofs(OPLOCK_BREAK_TIMEOUT, 0),
+ oplock_timeout_handler, fsp);
if (fsp->oplock_timeout == NULL) {
DEBUG(0, ("Could not add oplock timeout handler\n"));
}
}
-void break_level2_to_none_async(files_struct *fsp)
+static void send_break_message_smb1(files_struct *fsp, int level)
{
- char *break_msg;
+ char break_msg[SMB1_BREAK_MESSAGE_LENGTH];
+
+ new_break_message_smb1(fsp, level, break_msg);
+
+ show_msg(break_msg);
+ if (!srv_send_smb(fsp->conn->sconn,
+ break_msg, false, 0,
+ IS_CONN_ENCRYPTED(fsp->conn),
+ NULL)) {
+ exit_server_cleanly("send_break_message_smb1: "
+ "srv_send_smb failed.");
+ }
+}
+
+static void break_level2_to_none_async(files_struct *fsp)
+{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
if (fsp->oplock_type == NO_OPLOCK) {
/* We already got a "break to none" message and we've handled
SMB_ASSERT(fsp->oplock_type == LEVEL_II_OPLOCK);
DEBUG(10,("process_oplock_async_level2_break_message: sending break "
- "to none message for fid %d, file %s\n", fsp->fnum,
- fsp->fsp_name));
+ "to none message for %s, file %s\n", fsp_fnum_dbg(fsp),
+ fsp_str_dbg(fsp)));
/* Now send a break to none message to our client. */
- break_msg = new_break_smb_message(NULL, fsp, OPLOCKLEVEL_NONE);
- if (break_msg == NULL) {
- exit_server("Could not talloc break_msg\n");
- }
-
- show_msg(break_msg);
- if (!srv_send_smb(smbd_server_fd(),
- break_msg, false, 0,
- IS_CONN_ENCRYPTED(fsp->conn),
- NULL)) {
- exit_server_cleanly("oplock_break: srv_send_smb failed.");
+ if (sconn->using_smb2) {
+ send_break_message_smb2(fsp, OPLOCKLEVEL_NONE);
+ } else {
+ send_break_message_smb1(fsp, OPLOCKLEVEL_NONE);
}
- TALLOC_FREE(break_msg);
-
/* Async level2 request, don't send a reply, just remove the oplock. */
remove_oplock(fsp);
-
}
/*******************************************************************
the client for LEVEL2.
*******************************************************************/
-void process_oplock_async_level2_break_message(struct messaging_context *msg_ctx,
+static void process_oplock_async_level2_break_message(struct messaging_context *msg_ctx,
void *private_data,
uint32_t msg_type,
struct server_id src,
{
struct share_mode_entry msg;
files_struct *fsp;
+ struct smbd_server_connection *sconn =
+ talloc_get_type_abort(private_data,
+ struct smbd_server_connection);
if (data->data == NULL) {
DEBUG(0, ("Got NULL buffer\n"));
message_to_share_mode_entry(&msg, (char *)data->data);
DEBUG(10, ("Got oplock async level 2 break message from pid %s: "
- "%s/%lu\n", procid_str(debug_ctx(), &src),
- file_id_string_tos(&msg.id), msg.share_file_id));
+ "%s/%llu\n", server_id_str(talloc_tos(), &src),
+ file_id_string_tos(&msg.id),
+ (unsigned long long)msg.share_file_id));
- fsp = initial_break_processing(msg.id, msg.share_file_id);
+ fsp = initial_break_processing(sconn, msg.id, msg.share_file_id);
if (fsp == NULL) {
/* We hit a race here. Break messages are sent, and before we
{
struct share_mode_entry msg;
files_struct *fsp;
- char *break_msg;
bool break_to_level2 = False;
+ bool use_kernel;
+ struct smbd_server_connection *sconn =
+ talloc_get_type_abort(private_data,
+ struct smbd_server_connection);
+ struct server_id self = messaging_server_id(sconn->msg_ctx);
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
if (data->data == NULL) {
DEBUG(0, ("Got NULL buffer\n"));
/* De-linearize incoming message. */
message_to_share_mode_entry(&msg, (char *)data->data);
- DEBUG(10, ("Got oplock break message from pid %s: %s/%lu\n",
- procid_str(debug_ctx(), &src), file_id_string_tos(&msg.id),
- msg.share_file_id));
+ DEBUG(10, ("Got oplock break message from pid %s: %s/%llu\n",
+ server_id_str(talloc_tos(), &src),
+ file_id_string_tos(&msg.id),
+ (unsigned long long)msg.share_file_id));
- fsp = initial_break_processing(msg.id, msg.share_file_id);
+ fsp = initial_break_processing(sconn, msg.id, msg.share_file_id);
if (fsp == NULL) {
- /* a We hit race here. Break messages are sent, and before we
- * get to process this message, we have closed the file. Reply
- * with 'ok, oplock broken' */
+ /* We hit a race here. Break messages are sent, and before we
+ * get to process this message, we have closed the file. */
DEBUG(3, ("Did not find fsp\n"));
-
- /* We just send the same message back. */
- messaging_send_buf(msg_ctx, src, MSG_SMB_BREAK_RESPONSE,
- (uint8 *)data->data,
- MSG_SMB_SHARE_MODE_ENTRY_SIZE);
return;
}
if (fsp->sent_oplock_break != NO_BREAK_SENT) {
- /* Remember we have to inform the requesting PID when the
- * client replies */
- msg.pid = src;
- ADD_TO_ARRAY(NULL, struct share_mode_entry, msg,
- &fsp->pending_break_messages,
- &fsp->num_pending_break_messages);
+ /*
+ * Nothing to do anymore
+ */
return;
}
!EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
DEBUG(3, ("Already downgraded oplock on %s: %s\n",
file_id_string_tos(&fsp->file_id),
- fsp->fsp_name));
- /* We just send the same message back. */
- messaging_send_buf(msg_ctx, src, MSG_SMB_BREAK_RESPONSE,
- (uint8 *)data->data,
- MSG_SMB_SHARE_MODE_ENTRY_SIZE);
+ fsp_str_dbg(fsp)));
return;
}
- if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
- !(msg.op_type & FORCE_OPLOCK_BREAK_TO_NONE) &&
- !(koplocks && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) &&
+ use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;
+
+ if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
+ !(use_kernel && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) &&
lp_level2_oplocks(SNUM(fsp->conn))) {
break_to_level2 = True;
}
- break_msg = new_break_smb_message(NULL, fsp, break_to_level2 ?
- OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
- if (break_msg == NULL) {
- exit_server("Could not talloc break_msg\n");
- }
-
- /* Need to wait before sending a break message if we sent ourselves this message. */
- if (procid_is_me(&src)) {
+ /* Need to wait before sending a break
+ message if we sent ourselves this message. */
+ if (serverid_equal(&self, &src)) {
wait_before_sending_break();
}
- show_msg(break_msg);
- if (!srv_send_smb(smbd_server_fd(),
- break_msg, false, 0,
- IS_CONN_ENCRYPTED(fsp->conn),
- NULL)) {
- exit_server_cleanly("oplock_break: srv_send_smb failed.");
+ if (sconn->using_smb2) {
+ send_break_message_smb2(fsp, break_to_level2 ?
+ OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
+ } else {
+ send_break_message_smb1(fsp, break_to_level2 ?
+ OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
}
- TALLOC_FREE(break_msg);
-
fsp->sent_oplock_break = break_to_level2 ? LEVEL_II_BREAK_SENT:BREAK_TO_NONE_SENT;
- msg.pid = src;
- ADD_TO_ARRAY(NULL, struct share_mode_entry, msg,
- &fsp->pending_break_messages,
- &fsp->num_pending_break_messages);
-
add_oplock_timeout_handler(fsp);
}
struct file_id id;
unsigned long file_id;
files_struct *fsp;
- char *break_msg;
+ struct smbd_server_connection *sconn =
+ talloc_get_type_abort(private_data,
+ struct smbd_server_connection);
if (data->data == NULL) {
DEBUG(0, ("Got NULL buffer\n"));
file_id = (unsigned long)IVAL(data->data, 24);
DEBUG(10, ("Got kernel oplock break message from pid %s: %s/%u\n",
- procid_str(debug_ctx(), &src), file_id_string_tos(&id),
+ server_id_str(talloc_tos(), &src), file_id_string_tos(&id),
(unsigned int)file_id));
- fsp = initial_break_processing(id, file_id);
+ fsp = initial_break_processing(sconn, id, file_id);
if (fsp == NULL) {
DEBUG(3, ("Got a kernel oplock break message for a file "
return;
}
- break_msg = new_break_smb_message(NULL, fsp, OPLOCKLEVEL_NONE);
- if (break_msg == NULL) {
- exit_server("Could not talloc break_msg\n");
- }
-
- show_msg(break_msg);
- if (!srv_send_smb(smbd_server_fd(),
- break_msg, false, 0,
- IS_CONN_ENCRYPTED(fsp->conn),
- NULL)) {
- exit_server_cleanly("oplock_break: srv_send_smb failed.");
+ if (sconn->using_smb2) {
+ send_break_message_smb2(fsp, OPLOCKLEVEL_NONE);
+ } else {
+ send_break_message_smb1(fsp, OPLOCKLEVEL_NONE);
}
- TALLOC_FREE(break_msg);
-
fsp->sent_oplock_break = BREAK_TO_NONE_SENT;
add_oplock_timeout_handler(fsp);
}
-void reply_to_oplock_break_requests(files_struct *fsp)
-{
- int i;
-
- /*
- * If kernel oplocks already notifies smbds when oplocks are
- * broken/removed, just return.
- */
- if (koplocks &&
- (koplocks->flags & KOPLOCKS_OPLOCK_BROKEN_NOTIFICATION)) {
- return;
- }
-
- for (i=0; i<fsp->num_pending_break_messages; i++) {
- struct share_mode_entry *e = &fsp->pending_break_messages[i];
- char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
-
- share_mode_entry_to_message(msg, e);
-
- messaging_send_buf(smbd_messaging_context(), e->pid,
- MSG_SMB_BREAK_RESPONSE,
- (uint8 *)msg,
- MSG_SMB_SHARE_MODE_ENTRY_SIZE);
- }
-
- SAFE_FREE(fsp->pending_break_messages);
- fsp->num_pending_break_messages = 0;
- if (fsp->oplock_timeout != NULL) {
- /* Remove the timed event handler. */
- TALLOC_FREE(fsp->oplock_timeout);
- fsp->oplock_timeout = NULL;
- }
- return;
-}
-
-static void process_oplock_break_response(struct messaging_context *msg_ctx,
- void *private_data,
- uint32_t msg_type,
- struct server_id src,
- DATA_BLOB *data)
-{
- struct share_mode_entry msg;
-
- if (data->data == NULL) {
- DEBUG(0, ("Got NULL buffer\n"));
- return;
- }
-
- if (data->length != MSG_SMB_SHARE_MODE_ENTRY_SIZE) {
- DEBUG(0, ("Got invalid msg len %u\n",
- (unsigned int)data->length));
- return;
- }
-
- /* De-linearize incoming message. */
- message_to_share_mode_entry(&msg, (char *)data->data);
-
- DEBUG(10, ("Got oplock break response from pid %s: %s/%lu mid %u\n",
- procid_str(debug_ctx(), &src), file_id_string_tos(&msg.id),
- msg.share_file_id, (unsigned int)msg.op_mid));
-
- /* Here's the hack from open.c, store the mid in the 'port' field */
- schedule_deferred_open_smb_message(msg.op_mid);
-}
-
-static void process_open_retry_message(struct messaging_context *msg_ctx,
- void *private_data,
- uint32_t msg_type,
- struct server_id src,
- DATA_BLOB *data)
-{
- struct share_mode_entry msg;
-
- if (data->data == NULL) {
- DEBUG(0, ("Got NULL buffer\n"));
- return;
- }
-
- if (data->length != MSG_SMB_SHARE_MODE_ENTRY_SIZE) {
- DEBUG(0, ("Got invalid msg len %d\n", (int)data->length));
- return;
- }
-
- /* De-linearize incoming message. */
- message_to_share_mode_entry(&msg, (char *)data->data);
-
- DEBUG(10, ("Got open retry msg from pid %s: %s mid %u\n",
- procid_str(debug_ctx(), &src), file_id_string_tos(&msg.id),
- (unsigned int)msg.op_mid));
-
- schedule_deferred_open_smb_message(msg.op_mid);
-}
+struct break_to_none_state {
+ struct smbd_server_connection *sconn;
+ struct file_id id;
+};
+static void do_break_to_none(struct tevent_context *ctx,
+ struct tevent_immediate *im,
+ void *private_data);
/****************************************************************************
This function is called on any file modification or lock request. If a file
static void contend_level2_oplocks_begin_default(files_struct *fsp,
enum level2_contention_type type)
{
- int i;
- struct share_mode_lock *lck;
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct tevent_immediate *im;
+ struct break_to_none_state *state;
/*
* If this file is level II oplocked then we need
if (!LEVEL_II_OPLOCK_TYPE(fsp->oplock_type))
return;
- lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
- NULL);
- if (lck == NULL) {
- DEBUG(0,("release_level_2_oplocks_on_change: failed to lock "
- "share mode entry for file %s.\n", fsp->fsp_name ));
+ /*
+ * When we get here we might have a brlock entry locked. Also
+ * locking the share mode entry would violate the locking
+ * order. Breaking level2 oplocks to none is asynchronous
+ * anyway, so we postpone this into an immediate timed event.
+ */
+
+ state = talloc(sconn, struct break_to_none_state);
+ if (state == NULL) {
+ DEBUG(1, ("talloc failed\n"));
+ return;
+ }
+ state->sconn = sconn;
+ state->id = fsp->file_id;
+
+ im = tevent_create_immediate(state);
+ if (im == NULL) {
+ DEBUG(1, ("tevent_create_immediate failed\n"));
+ TALLOC_FREE(state);
return;
}
+ tevent_schedule_immediate(im, sconn->ev_ctx, do_break_to_none, state);
+}
+
+static void do_break_to_none(struct tevent_context *ctx,
+ struct tevent_immediate *im,
+ void *private_data)
+{
+ struct break_to_none_state *state = talloc_get_type_abort(
+ private_data, struct break_to_none_state);
+ struct server_id self = messaging_server_id(state->sconn->msg_ctx);
+ int i;
+ struct share_mode_lock *lck;
+
+ lck = get_existing_share_mode_lock(talloc_tos(), state->id);
+ if (lck == NULL) {
+ DEBUG(1, ("release_level_2_oplocks_on_change: failed to lock "
+ "share mode entry for file %s.\n",
+ file_id_string_tos(&state->id)));
+ goto done;
+ }
DEBUG(10,("release_level_2_oplocks_on_change: num_share_modes = %d\n",
- lck->num_share_modes ));
+ lck->data->num_share_modes ));
- for(i = 0; i < lck->num_share_modes; i++) {
- struct share_mode_entry *share_entry = &lck->share_modes[i];
+ for(i = 0; i < lck->data->num_share_modes; i++) {
+ struct share_mode_entry *share_entry = &lck->data->share_modes[i];
char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
if (!is_valid_share_mode_entry(share_entry)) {
* Bugid #5980.
*/
- if (procid_is_me(&share_entry->pid)) {
- wait_before_sending_break();
- break_level2_to_none_async(fsp);
+ if (serverid_equal(&self, &share_entry->pid)) {
+ struct files_struct *cur_fsp =
+ initial_break_processing(state->sconn,
+ share_entry->id,
+ share_entry->share_file_id);
+ if (cur_fsp != NULL) {
+ wait_before_sending_break();
+ break_level2_to_none_async(cur_fsp);
+ } else {
+ DEBUG(3, ("release_level_2_oplocks_on_change: "
+ "Did not find fsp, ignoring\n"));
+ }
} else {
- messaging_send_buf(smbd_messaging_context(),
+ messaging_send_buf(state->sconn->msg_ctx,
share_entry->pid,
MSG_SMB_ASYNC_LEVEL2_BREAK,
(uint8 *)msg,
in the share mode lock db. */
TALLOC_FREE(lck);
+done:
+ TALLOC_FREE(state);
+ return;
}
-void contend_level2_oplocks_begin(files_struct *fsp,
+void smbd_contend_level2_oplocks_begin(files_struct *fsp,
enum level2_contention_type type)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+
if (koplocks && koplocks->ops->contend_level2_oplocks_begin) {
koplocks->ops->contend_level2_oplocks_begin(fsp, type);
return;
contend_level2_oplocks_begin_default(fsp, type);
}
-void contend_level2_oplocks_end(files_struct *fsp,
+void smbd_contend_level2_oplocks_end(files_struct *fsp,
enum level2_contention_type type)
{
+ struct smbd_server_connection *sconn = fsp->conn->sconn;
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
+
/* Only kernel oplocks implement this so far */
if (koplocks && koplocks->ops->contend_level2_oplocks_end) {
koplocks->ops->contend_level2_oplocks_end(fsp, type);
void share_mode_entry_to_message(char *msg, const struct share_mode_entry *e)
{
- SIVAL(msg,0,(uint32)e->pid.pid);
- SSVAL(msg,4,e->op_mid);
- SSVAL(msg,6,e->op_type);
- SIVAL(msg,8,e->access_mask);
- SIVAL(msg,12,e->share_access);
- SIVAL(msg,16,e->private_options);
- SIVAL(msg,20,(uint32)e->time.tv_sec);
- SIVAL(msg,24,(uint32)e->time.tv_usec);
- push_file_id_24(msg+28, &e->id);
- SIVAL(msg,52,e->share_file_id);
- SIVAL(msg,56,e->uid);
- SSVAL(msg,60,e->flags);
-#ifdef CLUSTER_SUPPORT
- SIVAL(msg,62,e->pid.vnn);
-#endif
+ SIVAL(msg,OP_BREAK_MSG_PID_OFFSET,(uint32)e->pid.pid);
+ SBVAL(msg,OP_BREAK_MSG_MID_OFFSET,e->op_mid);
+ SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,e->op_type);
+ SIVAL(msg,OP_BREAK_MSG_ACCESS_MASK_OFFSET,e->access_mask);
+ SIVAL(msg,OP_BREAK_MSG_SHARE_ACCESS_OFFSET,e->share_access);
+ SIVAL(msg,OP_BREAK_MSG_PRIV_OFFSET,e->private_options);
+ SIVAL(msg,OP_BREAK_MSG_TIME_SEC_OFFSET,(uint32_t)e->time.tv_sec);
+ SIVAL(msg,OP_BREAK_MSG_TIME_USEC_OFFSET,(uint32_t)e->time.tv_usec);
+ push_file_id_24(msg+OP_BREAK_MSG_DEV_OFFSET, &e->id);
+ SIVAL(msg,OP_BREAK_MSG_FILE_ID_OFFSET,e->share_file_id);
+ SIVAL(msg,OP_BREAK_MSG_UID_OFFSET,e->uid);
+ SSVAL(msg,OP_BREAK_MSG_FLAGS_OFFSET,e->flags);
+ SIVAL(msg,OP_BREAK_MSG_NAME_HASH_OFFSET,e->name_hash);
+ SIVAL(msg,OP_BREAK_MSG_VNN_OFFSET,e->pid.vnn);
}
/****************************************************************************
void message_to_share_mode_entry(struct share_mode_entry *e, char *msg)
{
- e->pid.pid = (pid_t)IVAL(msg,0);
- e->op_mid = SVAL(msg,4);
- e->op_type = SVAL(msg,6);
- e->access_mask = IVAL(msg,8);
- e->share_access = IVAL(msg,12);
- e->private_options = IVAL(msg,16);
- e->time.tv_sec = (time_t)IVAL(msg,20);
- e->time.tv_usec = (int)IVAL(msg,24);
- pull_file_id_24(msg+28, &e->id);
- e->share_file_id = (unsigned long)IVAL(msg,52);
- e->uid = (uint32)IVAL(msg,56);
- e->flags = (uint16)SVAL(msg,60);
-#ifdef CLUSTER_SUPPORT
- e->pid.vnn = IVAL(msg,62);
-#endif
+ e->pid.pid = (pid_t)IVAL(msg,OP_BREAK_MSG_PID_OFFSET);
+ e->op_mid = BVAL(msg,OP_BREAK_MSG_MID_OFFSET);
+ e->op_type = SVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET);
+ e->access_mask = IVAL(msg,OP_BREAK_MSG_ACCESS_MASK_OFFSET);
+ e->share_access = IVAL(msg,OP_BREAK_MSG_SHARE_ACCESS_OFFSET);
+ e->private_options = IVAL(msg,OP_BREAK_MSG_PRIV_OFFSET);
+ e->time.tv_sec = (time_t)IVAL(msg,OP_BREAK_MSG_TIME_SEC_OFFSET);
+ e->time.tv_usec = (int)IVAL(msg,OP_BREAK_MSG_TIME_USEC_OFFSET);
+ pull_file_id_24(msg+OP_BREAK_MSG_DEV_OFFSET, &e->id);
+ e->share_file_id = (unsigned long)IVAL(msg,OP_BREAK_MSG_FILE_ID_OFFSET);
+ e->uid = (uint32)IVAL(msg,OP_BREAK_MSG_UID_OFFSET);
+ e->flags = (uint16)SVAL(msg,OP_BREAK_MSG_FLAGS_OFFSET);
+ e->name_hash = IVAL(msg,OP_BREAK_MSG_NAME_HASH_OFFSET);
+ e->pid.vnn = IVAL(msg,OP_BREAK_MSG_VNN_OFFSET);
}
/****************************************************************************
Setup oplocks for this process.
****************************************************************************/
-bool init_oplocks(struct messaging_context *msg_ctx)
+bool init_oplocks(struct smbd_server_connection *sconn)
{
DEBUG(3,("init_oplocks: initializing messages.\n"));
- messaging_register(msg_ctx, NULL, MSG_SMB_BREAK_REQUEST,
+ messaging_register(sconn->msg_ctx, sconn, MSG_SMB_BREAK_REQUEST,
process_oplock_break_message);
- messaging_register(msg_ctx, NULL, MSG_SMB_ASYNC_LEVEL2_BREAK,
+ messaging_register(sconn->msg_ctx, sconn, MSG_SMB_ASYNC_LEVEL2_BREAK,
process_oplock_async_level2_break_message);
- messaging_register(msg_ctx, NULL, MSG_SMB_BREAK_RESPONSE,
- process_oplock_break_response);
- messaging_register(msg_ctx, NULL, MSG_SMB_KERNEL_BREAK,
+ messaging_register(sconn->msg_ctx, sconn, MSG_SMB_KERNEL_BREAK,
process_kernel_oplock_break);
- messaging_register(msg_ctx, NULL, MSG_SMB_OPEN_RETRY,
- process_open_retry_message);
+ return true;
+}
+
+void init_kernel_oplocks(struct smbd_server_connection *sconn)
+{
+ struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
- if (lp_kernel_oplocks()) {
+ /* only initialize once */
+ if (koplocks == NULL) {
#if HAVE_KERNEL_OPLOCKS_IRIX
- koplocks = irix_init_kernel_oplocks(talloc_autofree_context());
+ koplocks = irix_init_kernel_oplocks(sconn);
#elif HAVE_KERNEL_OPLOCKS_LINUX
- koplocks = linux_init_kernel_oplocks(talloc_autofree_context());
-#elif HAVE_ONEFS
- koplocks = onefs_init_kernel_oplocks(talloc_autofree_context());
+ koplocks = linux_init_kernel_oplocks(sconn);
#endif
+ sconn->oplocks.kernel_ops = koplocks;
}
-
- return True;
}