#define DBGC_CLASS DBGC_LOCKING
#include "includes.h"
-
-/* Current number of oplocks we have outstanding. */
-static int32 exclusive_oplocks_open = 0;
-static int32 level_II_oplocks_open = 0;
-bool global_client_failed_oplock_break = False;
-
-extern uint32 global_client_caps;
-
-static struct kernel_oplocks *koplocks;
+#include "smbd/globals.h"
/****************************************************************************
Get the number of current exclusive oplocks.
return exclusive_oplocks_open;
}
-/****************************************************************************
- Return True if an oplock message is pending.
-****************************************************************************/
-
-bool oplock_message_waiting(fd_set *fds)
-{
- if (koplocks && koplocks->msg_waiting(fds)) {
- return True;
- }
-
- return False;
-}
-
-/****************************************************************************
- Find out if there are any kernel oplock messages waiting and process them
- if so. pfds is the fd_set from the main select loop (which contains any
- kernel oplock fd if that's what the system uses (IRIX). If may be NULL if
- we're calling this in a shutting down state.
-****************************************************************************/
-
-void process_kernel_oplocks(struct messaging_context *msg_ctx, fd_set *pfds)
+/*
+ * helper function used by the kernel oplock backends to post the break message
+ */
+void break_kernel_oplock(struct messaging_context *msg_ctx, files_struct *fsp)
{
- /*
- * We need to check for kernel oplocks before going into the select
- * here, as the EINTR generated by the linux kernel oplock may have
- * already been eaten. JRA.
- */
+ uint8_t msg[MSG_SMB_KERNEL_BREAK_SIZE];
- if (!koplocks) {
- return;
- }
+ /* Put the kernel break info into the message. */
+ push_file_id_24((char *)msg, &fsp->file_id);
+ SIVAL(msg,24,fsp->fh->gen_id);
- while (koplocks->msg_waiting(pfds)) {
- files_struct *fsp;
- char msg[MSG_SMB_KERNEL_BREAK_SIZE];
+ /* Don't need to be root here as we're only ever
+ sending to ourselves. */
- fsp = koplocks->receive_message(pfds);
-
- if (fsp == NULL) {
- DEBUG(3, ("Kernel oplock message announced, but none "
- "received\n"));
- return;
- }
-
- /* Put the kernel break info into the message. */
- push_file_id_16(msg, &fsp->file_id);
- SIVAL(msg,16,fsp->fh->gen_id);
-
- /* Don't need to be root here as we're only ever
- sending to ourselves. */
-
- messaging_send_buf(msg_ctx, procid_self(),
- MSG_SMB_KERNEL_BREAK,
- (uint8 *)&msg, MSG_SMB_KERNEL_BREAK_SIZE);
- }
+ messaging_send_buf(msg_ctx, procid_self(),
+ MSG_SMB_KERNEL_BREAK,
+ msg, MSG_SMB_KERNEL_BREAK_SIZE);
}
/****************************************************************************
bool set_file_oplock(files_struct *fsp, int oplock_type)
{
+ if ((fsp->oplock_type == LEVEL_II_OPLOCK)
+ && koplocks && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) {
+ DEBUG(10, ("Refusing level2 oplock, kernel oplocks don't "
+ "support them\n"));
+ return false;
+ }
if ((fsp->oplock_type != NO_OPLOCK) &&
(fsp->oplock_type != FAKE_LEVEL_II_OPLOCK) &&
koplocks &&
- !koplocks->set_oplock(fsp, oplock_type)) {
+ !koplocks->ops->set_oplock(koplocks, fsp, oplock_type)) {
return False;
}
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 ));
if ((fsp->oplock_type != NO_OPLOCK) &&
(fsp->oplock_type != FAKE_LEVEL_II_OPLOCK) &&
koplocks) {
- koplocks->release_oplock(fsp);
+ koplocks->ops->release_oplock(koplocks, fsp, NO_OPLOCK);
}
if (fsp->oplock_type == LEVEL_II_OPLOCK) {
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)
{
+ if (!EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
+ DEBUG(0, ("trying to downgrade an already-downgraded oplock!\n"));
+ return;
+ }
+
if (koplocks) {
- koplocks->release_oplock(fsp);
+ koplocks->ops->release_oplock(koplocks, fsp, LEVEL_II_OPLOCK);
}
fsp->oplock_type = LEVEL_II_OPLOCK;
exclusive_oplocks_open--;
NULL);
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)));
+ fsp_str_dbg(fsp), fsp->fnum,
+ file_id_string_tos(&fsp->file_id)));
}
release_file_oplock(fsp);
TALLOC_FREE(lck);
NULL);
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)));
+ fsp_str_dbg(fsp), fsp->fnum,
+ file_id_string_tos(&fsp->file_id)));
}
downgrade_file_oplock(fsp);
return ret;
}
-/****************************************************************************
- Return the fd (if any) used for receiving oplock notifications.
-****************************************************************************/
-
-int oplock_notify_fd(void)
+/*
+ * Some kernel oplock implementations handle the notification themselves.
+ */
+bool should_notify_deferred_opens()
{
- if (koplocks) {
- return koplocks->notification_fd;
- }
-
- return -1;
+ return !(koplocks &&
+ (koplocks->flags & KOPLOCKS_DEFERRED_OPEN_NOTIFICATION));
}
/****************************************************************************
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" );
static void oplock_timeout_handler(struct event_context *ctx,
struct timed_event *te,
- const struct timeval *now,
+ struct timeval now,
void *private_data)
{
files_struct *fsp = (files_struct *)private_data;
/* Remove the timed event handler. */
TALLOC_FREE(fsp->oplock_timeout);
- DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n", fsp->fsp_name));
+ DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n",
+ fsp_str_dbg(fsp)));
global_client_failed_oplock_break = True;
remove_oplock(fsp);
reply_to_oplock_break_requests(fsp);
static void add_oplock_timeout_handler(files_struct *fsp)
{
+ /*
+ * If kernel oplocks already notifies smbds when an oplock break times
+ * out, just return.
+ */
+ if (koplocks &&
+ (koplocks->flags & KOPLOCKS_TIMEOUT_NOTIFICATION)) {
+ return;
+ }
+
if (fsp->oplock_timeout != NULL) {
DEBUG(0, ("Logic problem -- have an oplock event hanging "
"around\n"));
fsp->oplock_timeout =
event_add_timed(smbd_event_context(), NULL,
timeval_current_ofs(OPLOCK_BREAK_TIMEOUT, 0),
- "oplock_timeout_handler",
oplock_timeout_handler, fsp);
if (fsp->oplock_timeout == NULL) {
}
}
+void break_level2_to_none_async(files_struct *fsp)
+{
+ char *break_msg;
+
+ if (fsp->oplock_type == NO_OPLOCK) {
+ /* We already got a "break to none" message and we've handled
+ * it. just ignore. */
+ DEBUG(3, ("process_oplock_async_level2_break_message: already "
+ "broken to none, ignoring.\n"));
+ return;
+ }
+
+ if (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
+ /* Don't tell the client, just downgrade. */
+ DEBUG(3, ("process_oplock_async_level2_break_message: "
+ "downgrading fake level 2 oplock.\n"));
+ remove_oplock(fsp);
+ return;
+ }
+
+ /* Ensure we're really at level2 state. */
+ 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_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.");
+ }
+
+ TALLOC_FREE(break_msg);
+
+ /* Async level2 request, don't send a reply, just remove the oplock. */
+ remove_oplock(fsp);
+
+}
+
/*******************************************************************
This handles the case of a write triggering a break to none
message on a level2 oplock.
the client for LEVEL2.
*******************************************************************/
-static void process_oplock_async_level2_break_message(struct messaging_context *msg_ctx,
+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;
- char *break_msg;
- bool sign_state;
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 async level 2 break message from pid %d: %s/%lu\n",
- (int)procid_to_pid(&src), file_id_string_tos(&msg.id), msg.share_file_id));
+ DEBUG(10, ("Got oplock async level 2 break message from pid %s: "
+ "%s/%lu\n", procid_str(talloc_tos(), &src),
+ file_id_string_tos(&msg.id), msg.share_file_id));
fsp = initial_break_processing(msg.id, msg.share_file_id);
return;
}
- if (fsp->oplock_type == NO_OPLOCK) {
- /* We already got a "break to none" message and we've handled it.
- * just ignore. */
- DEBUG(3, ("process_oplock_async_level2_break_message: already broken to none, ignoring.\n"));
- return;
- }
-
- if (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
- /* Don't tell the client, just downgrade. */
- DEBUG(3, ("process_oplock_async_level2_break_message: downgrading fake level 2 oplock.\n"));
- remove_oplock(fsp);
- return;
- }
-
- /* Ensure we're really at level2 state. */
- 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));
-
- /* 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");
- }
-
- /* Need to wait before sending a break message if we sent ourselves this message. */
- if (procid_to_pid(&src) == sys_getpid()) {
- wait_before_sending_break();
- }
-
- /* Save the server smb signing state. */
- sign_state = srv_oplock_set_signing(False);
-
- show_msg(break_msg);
- if (!srv_send_smb(smbd_server_fd(),
- break_msg,
- IS_CONN_ENCRYPTED(fsp->conn))) {
- exit_server_cleanly("oplock_break: srv_send_smb failed.");
- }
-
- /* Restore the sign state to what it was. */
- srv_oplock_set_signing(sign_state);
-
- TALLOC_FREE(break_msg);
-
- /* Async level2 request, don't send a reply, just remove the oplock. */
- remove_oplock(fsp);
+ break_level2_to_none_async(fsp);
}
/*******************************************************************
files_struct *fsp;
char *break_msg;
bool break_to_level2 = False;
- bool sign_state;
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 %d: %s/%lu\n",
- (int)procid_to_pid(&src), file_id_string_tos(&msg.id), msg.share_file_id));
+ DEBUG(10, ("Got oplock break message from pid %s: %s/%lu\n",
+ procid_str(talloc_tos(), &src), file_id_string_tos(&msg.id),
+ msg.share_file_id));
fsp = initial_break_processing(msg.id, msg.share_file_id);
!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));
+ fsp_str_dbg(fsp)));
/* We just send the same message back. */
messaging_send_buf(msg_ctx, src, MSG_SMB_BREAK_RESPONSE,
(uint8 *)data->data,
if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
!(msg.op_type & FORCE_OPLOCK_BREAK_TO_NONE) &&
- !koplocks && /* NOTE: we force levelII off for kernel oplocks -
- * this will change when it is supported */
+ !(koplocks && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) &&
lp_level2_oplocks(SNUM(fsp->conn))) {
break_to_level2 = True;
}
}
/* Need to wait before sending a break message if we sent ourselves this message. */
- if (procid_to_pid(&src) == sys_getpid()) {
+ if (procid_is_me(&src)) {
wait_before_sending_break();
}
- /* Save the server smb signing state. */
- sign_state = srv_oplock_set_signing(False);
-
show_msg(break_msg);
if (!srv_send_smb(smbd_server_fd(),
- break_msg,
- IS_CONN_ENCRYPTED(fsp->conn))) {
+ break_msg, false, 0,
+ IS_CONN_ENCRYPTED(fsp->conn),
+ NULL)) {
exit_server_cleanly("oplock_break: srv_send_smb failed.");
}
- /* Restore the sign state to what it was. */
- srv_oplock_set_signing(sign_state);
-
TALLOC_FREE(break_msg);
fsp->sent_oplock_break = break_to_level2 ? LEVEL_II_BREAK_SENT:BREAK_TO_NONE_SENT;
unsigned long file_id;
files_struct *fsp;
char *break_msg;
- bool sign_state;
if (data->data == NULL) {
DEBUG(0, ("Got NULL buffer\n"));
}
/* Pull the data from the message. */
- pull_file_id_16((char *)data->data, &id);
- file_id = (unsigned long)IVAL(data->data, 16);
+ pull_file_id_24((char *)data->data, &id);
+ file_id = (unsigned long)IVAL(data->data, 24);
- DEBUG(10, ("Got kernel oplock break message from pid %d: %s/%u\n",
- (int)procid_to_pid(&src), file_id_string_tos(&id),
+ DEBUG(10, ("Got kernel oplock break message from pid %s: %s/%u\n",
+ procid_str(talloc_tos(), &src), file_id_string_tos(&id),
(unsigned int)file_id));
fsp = initial_break_processing(id, file_id);
exit_server("Could not talloc break_msg\n");
}
- /* Save the server smb signing state. */
- sign_state = srv_oplock_set_signing(False);
-
show_msg(break_msg);
if (!srv_send_smb(smbd_server_fd(),
- break_msg,
- IS_CONN_ENCRYPTED(fsp->conn))) {
+ break_msg, false, 0,
+ IS_CONN_ENCRYPTED(fsp->conn),
+ NULL)) {
exit_server_cleanly("oplock_break: srv_send_smb failed.");
}
- /* Restore the sign state to what it was. */
- srv_oplock_set_signing(sign_state);
-
TALLOC_FREE(break_msg);
fsp->sent_oplock_break = BREAK_TO_NONE_SENT;
{
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];
/* De-linearize incoming message. */
message_to_share_mode_entry(&msg, (char *)data->data);
- DEBUG(10, ("Got oplock break response from pid %d: %s/%lu mid %u\n",
- (int)procid_to_pid(&src), file_id_string_tos(&msg.id), msg.share_file_id,
- (unsigned int)msg.op_mid));
+ DEBUG(10, ("Got oplock break response from pid %s: %s/%lu mid %u\n",
+ procid_str(talloc_tos(), &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);
/* De-linearize incoming message. */
message_to_share_mode_entry(&msg, (char *)data->data);
- DEBUG(10, ("Got open retry msg from pid %d: %s mid %u\n",
- (int)procid_to_pid(&src), file_id_string_tos(&msg.id),
+ DEBUG(10, ("Got open retry msg from pid %s: %s mid %u\n",
+ procid_str(talloc_tos(), &src), file_id_string_tos(&msg.id),
(unsigned int)msg.op_mid));
schedule_deferred_open_smb_message(msg.op_mid);
none.
****************************************************************************/
-void release_level_2_oplocks_on_change(files_struct *fsp)
+static void contend_level2_oplocks_begin_default(files_struct *fsp,
+ enum level2_contention_type type)
{
int i;
struct share_mode_lock *lck;
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 ));
+ "share mode entry for file %s.\n", fsp_str_dbg(fsp)));
return;
}
*/
if (procid_is_me(&share_entry->pid)) {
- DATA_BLOB blob = data_blob_const(msg,
- MSG_SMB_SHARE_MODE_ENTRY_SIZE);
- process_oplock_async_level2_break_message(smbd_messaging_context(),
- NULL,
- MSG_SMB_ASYNC_LEVEL2_BREAK,
- share_entry->pid,
- &blob);
+ wait_before_sending_break();
+ break_level2_to_none_async(fsp);
} else {
messaging_send_buf(smbd_messaging_context(),
share_entry->pid,
TALLOC_FREE(lck);
}
+void contend_level2_oplocks_begin(files_struct *fsp,
+ enum level2_contention_type type)
+{
+ 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,
+ enum level2_contention_type type)
+{
+ /* Only kernel oplocks implement this so far */
+ if (koplocks && koplocks->ops->contend_level2_oplocks_end) {
+ koplocks->ops->contend_level2_oplocks_end(fsp, type);
+ }
+}
+
/****************************************************************************
Linearize a share mode entry struct to an internal oplock break message.
****************************************************************************/
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_16(msg+28, &e->id);
- SIVAL(msg,44,e->share_file_id);
- SIVAL(msg,48,e->uid);
- SSVAL(msg,52,e->flags);
+ 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,54,e->pid.vnn);
+ SIVAL(msg,62,e->pid.vnn);
#endif
}
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_16(msg+28, &e->id);
- e->share_file_id = (unsigned long)IVAL(msg,44);
- e->uid = (uint32)IVAL(msg,48);
- e->flags = (uint16)SVAL(msg,52);
+ 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,54);
+ e->pid.vnn = IVAL(msg,62);
#endif
}
if (lp_kernel_oplocks()) {
#if HAVE_KERNEL_OPLOCKS_IRIX
- koplocks = irix_init_kernel_oplocks();
+ koplocks = irix_init_kernel_oplocks(talloc_autofree_context());
#elif HAVE_KERNEL_OPLOCKS_LINUX
- koplocks = linux_init_kernel_oplocks();
+ koplocks = linux_init_kernel_oplocks(talloc_autofree_context());
+#elif HAVE_ONEFS
+ koplocks = onefs_init_kernel_oplocks(talloc_autofree_context());
#endif
}
git.samba.org / samba.git / blobdiff