Пример #1
0
static void irix_release_kernel_oplock(struct kernel_oplocks *_ctx,
				       files_struct *fsp, int oplock_type)
{
	if (DEBUGLVL(10)) {
		/*
		 * Check and print out the current kernel
		 * oplock state of this file.
		 */
		int state = sys_fcntl_long(fsp->fh->fd, F_OPLKACK, -1);
		dbgtext("irix_release_kernel_oplock: file %s, file_id = %s"
			"gen_id = %ul, has kernel oplock state "
			"of %x.\n", fsp_str_dbg(fsp),
		        file_id_string_tos(&fsp->file_id),
                        fsp->fh->gen_id, state );
	}

	/*
	 * Remove the kernel oplock on this file.
	 */
	if(sys_fcntl_long(fsp->fh->fd, F_OPLKACK, OP_REVOKE) < 0) {
		if( DEBUGLVL( 0 )) {
			dbgtext("irix_release_kernel_oplock: Error when "
				"removing kernel oplock on file " );
			dbgtext("%s, file_id = %s gen_id = %ul. "
				"Error was %s\n",
				fsp_str_dbg(fsp),
			        file_id_string_tos(&fsp->file_id),
				fsp->fh->gen_id,
				strerror(errno) );
		}
	}
}
Пример #2
0
static void linux_release_kernel_oplock(struct kernel_oplocks *ctx,
					files_struct *fsp, int oplock_type)
{
	if (DEBUGLVL(10)) {
		/*
		 * Check and print out the current kernel
		 * oplock state of this file.
		 */
		int state = fcntl(fsp->fh->fd, F_GETLEASE, 0);
		dbgtext("linux_release_kernel_oplock: file %s, file_id = %s "
			"gen_id = %lu has kernel oplock state "
			"of %x.\n", fsp_str_dbg(fsp),
		        file_id_string_tos(&fsp->file_id),
			fsp->fh->gen_id, state );
	}

	/*
	 * Remove the kernel oplock on this file.
	 */
	if ( SMB_VFS_LINUX_SETLEASE(fsp, F_UNLCK) == -1) {
		if (DEBUGLVL(0)) {
			dbgtext("linux_release_kernel_oplock: Error when "
				"removing kernel oplock on file " );
			dbgtext("%s, file_id = %s, gen_id = %lu. "
				"Error was %s\n", fsp_str_dbg(fsp),
				file_id_string_tos(&fsp->file_id),
				fsp->fh->gen_id, strerror(errno) );
		}
	}
}
Пример #3
0
static bool irix_set_kernel_oplock(struct kernel_oplocks *_ctx,
				   files_struct *fsp, int oplock_type)
{
	struct irix_oplocks_context *ctx = talloc_get_type(_ctx->private_data,
					   struct irix_oplocks_context);

	if (sys_fcntl_long(fsp->fh->fd, F_OPLKREG, ctx->write_fd) == -1) {
		if(errno != EAGAIN) {
			DEBUG(0,("irix_set_kernel_oplock: Unable to get "
				 "kernel oplock on file %s, file_id %s "
				 "gen_id = %ul. Error was %s\n", 
				 fsp_str_dbg(fsp),
				 file_id_string_tos(&fsp->file_id),
				 fsp->fh->gen_id,
				 strerror(errno) ));
		} else {
			DEBUG(5,("irix_set_kernel_oplock: Refused oplock on "
				 "file %s, fd = %d, file_id = %s, "
				 "gen_id = %ul. Another process had the file "
				 "open.\n",
				 fsp_str_dbg(fsp), fsp->fh->fd,
				 file_id_string_tos(&fsp->file_id),
				 fsp->fh->gen_id ));
		}
		return False;
	}
	
	DEBUG(10,("irix_set_kernel_oplock: got kernel oplock on file %s, file_id = %s "
		  "gen_id = %ul\n",
		  fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
		  fsp->fh->gen_id));

	return True;
}
Пример #4
0
/*
 * Deal with a reply when a break-to-level II was sent.
 */
bool downgrade_oplock(files_struct *fsp)
{
	bool ret;
	struct share_mode_lock *lck;

	DEBUG(10, ("downgrade_oplock called for %s\n",
		   fsp_str_dbg(fsp)));

	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_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, %s, file_id %s\n",
			 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
			 file_id_string_tos(&fsp->file_id)));
	}
	downgrade_file_oplock(fsp);

	ret = update_num_read_oplocks(fsp, lck);
	if (!ret) {
		DEBUG(0, ("%s: update_num_read_oplocks failed for "
			 "file %s, %s, %s\n",
			  __func__, fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
			 file_id_string_tos(&fsp->file_id)));
	}

	TALLOC_FREE(lck);
	return ret;
}
Пример #5
0
static files_struct *initial_break_processing(
	struct smbd_server_connection *sconn, struct file_id id,
	unsigned long file_id)
{
	files_struct *fsp = NULL;

	DEBUG(3, ("initial_break_processing: called for %s/%u\n"
		  "Current oplocks_open (exclusive = %d, levelII = %d)\n",
		  file_id_string_tos(&id), (int)file_id,
		  sconn->oplocks.exclusive_open,
		  sconn->oplocks.level_II_open));

	/*
	 * We need to search the file open table for the
	 * entry containing this dev and inode, and ensure
	 * we have an oplock on it.
	 */

	fsp = file_find_dif(sconn, id, file_id);

	if(fsp == NULL) {
		/* The file could have been closed in the meantime - return success. */
		DEBUG(3, ("initial_break_processing: cannot find open file "
			  "with file_id %s gen_id = %lu, allowing break to "
			  "succeed.\n", file_id_string_tos(&id), file_id));
		return NULL;
	}

	/* Ensure we have an oplock on the file */

	/*
	 * There is a potential race condition in that an oplock could
	 * have been broken due to another udp request, and yet there are
	 * still oplock break messages being sent in the udp message
	 * queue for this file. So return true if we don't have an oplock,
	 * as we may have just freed it.
	 */

	if(fsp->oplock_type == NO_OPLOCK) {
		DEBUG(3, ("initial_break_processing: file %s (file_id = %s "
			  "gen_id = %lu) has no oplock. Allowing break to "
			  "succeed regardless.\n", fsp_str_dbg(fsp),
			  file_id_string_tos(&id), fsp->fh->gen_id));
		return NULL;
	}

	return fsp;
}
Пример #6
0
/*
 * Deal with a reply when a break-to-level II was sent.
 */
bool downgrade_oplock(files_struct *fsp)
{
	bool ret;
	struct share_mode_lock *lck;
	struct byte_range_lock *brl;

	DEBUG(10, ("downgrade_oplock called for %s\n",
		   fsp_str_dbg(fsp)));

	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_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, %s, file_id %s\n",
			 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
			 file_id_string_tos(&fsp->file_id)));
	}

	downgrade_file_oplock(fsp);

	brl = brl_get_locks(talloc_tos(), fsp);
	if (brl != NULL) {
		brl_set_have_read_oplocks(brl, true);
		TALLOC_FREE(brl);
	}

	TALLOC_FREE(lck);
	return ret;
}
Пример #7
0
static void print_brl(struct file_id id,
			struct server_id pid, 
			enum brl_type lock_type,
			enum brl_flavour lock_flav,
			br_off start,
			br_off size,
			void *private_data)
{
#if NASTY_POSIX_LOCK_HACK
	{
		static SMB_INO_T lastino;

		if (lastino != ino) {
			char *cmd;
			if (asprintf(&cmd,
				 "egrep POSIX.*%u /proc/locks", (int)ino) > 0) {
				system(cmd);
				SAFE_FREE(cmd);
			}
		}
		lastino = ino;
	}
#endif

	printf("%s   %s    %s  %.0f:%.0f(%.0f)\n", 
	       procid_str_static(&pid), file_id_string_tos(&id),
	       lock_type==READ_LOCK?"R":"W",
	       (double)start, (double)start+size-1,(double)size);

}
Пример #8
0
Файл: files.c Проект: hef/samba
files_struct *file_find_dif(struct smbd_server_connection *sconn,
			    struct file_id id, unsigned long gen_id)
{
	int count=0;
	files_struct *fsp;

	if (gen_id == 0) {
		return NULL;
	}

	for (fsp=sconn->files; fsp; fsp=fsp->next,count++) {
		/* We can have a fsp->fh->fd == -1 here as it could be a stat open. */
		if (file_id_equal(&fsp->file_id, &id) &&
		    fsp->fh->gen_id == gen_id ) {
			if (count > 10) {
				DLIST_PROMOTE(sconn->files, fsp);
			}
			/* Paranoia check. */
			if ((fsp->fh->fd == -1) &&
			    (fsp->oplock_type != NO_OPLOCK)) {
				DEBUG(0,("file_find_dif: file %s file_id = "
					 "%s, gen = %u oplock_type = %u is a "
					 "stat open with oplock type !\n",
					 fsp_str_dbg(fsp),
					 file_id_string_tos(&fsp->file_id),
					 (unsigned int)fsp->fh->gen_id,
					 (unsigned int)fsp->oplock_type ));
				smb_panic("file_find_dif");
			}
			return fsp;
		}
	}

	return NULL;
}
Пример #9
0
static void process_kernel_oplock_break(struct messaging_context *msg_ctx,
					void *private_data,
					uint32_t msg_type,
					struct server_id src,
					DATA_BLOB *data)
{
	struct file_id id;
	unsigned long file_id;
	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"));
		return;
	}

	if (data->length != MSG_SMB_KERNEL_BREAK_SIZE) {
		DEBUG(0, ("Got invalid msg len %d\n", (int)data->length));
		return;
	}

	/* Pull the data from the message. */
	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 %s: %s/%u\n",
		   server_id_str(talloc_tos(), &src), file_id_string_tos(&id),
		   (unsigned int)file_id));

	fsp = initial_break_processing(sconn, id, file_id);

	if (fsp == NULL) {
		DEBUG(3, ("Got a kernel oplock break message for a file "
			  "I don't know about\n"));
		return;
	}

	if (fsp->sent_oplock_break != NO_BREAK_SENT) {
		/* This is ok, kernel oplocks come in completely async */
		DEBUG(3, ("Got a kernel oplock request while waiting for a "
			  "break reply\n"));
		return;
	}

	if (sconn->using_smb2) {
		send_break_message_smb2(fsp, OPLOCKLEVEL_NONE);
	} else {
		send_break_message_smb1(fsp, OPLOCKLEVEL_NONE);
	}

	fsp->sent_oplock_break = BREAK_TO_NONE_SENT;

	add_oplock_timeout_handler(fsp);
}
Пример #10
0
static bool linux_set_kernel_oplock(struct kernel_oplocks *ctx,
				    files_struct *fsp, int oplock_type)
{
	if ( SMB_VFS_LINUX_SETLEASE(fsp, F_WRLCK) == -1) {
		DEBUG(3,("linux_set_kernel_oplock: Refused oplock on file %s, "
			 "fd = %d, file_id = %s. (%s)\n",
			 fsp_str_dbg(fsp), fsp->fh->fd,
			 file_id_string_tos(&fsp->file_id),
			 strerror(errno)));
		return False;
	}
	
	DEBUG(3,("linux_set_kernel_oplock: got kernel oplock on file %s, "
		 "file_id = %s gen_id = %lu\n",
		 fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
		 fsp->fh->gen_id));

	return True;
}
Пример #11
0
void scavenger_schedule_disconnected(struct files_struct *fsp)
{
	NTSTATUS status;
	struct server_id self = messaging_server_id(fsp->conn->sconn->msg_ctx);
	struct timeval disconnect_time, until;
	uint64_t timeout_usec;
	struct scavenger_message msg;
	DATA_BLOB msg_blob;
	struct server_id_buf tmp;

	if (fsp->op == NULL) {
		return;
	}
	nttime_to_timeval(&disconnect_time, fsp->op->global->disconnect_time);
	timeout_usec = 1000 * fsp->op->global->durable_timeout_msec;
	until = timeval_add(&disconnect_time,
			    timeout_usec / 1000000,
			    timeout_usec % 1000000);

	ZERO_STRUCT(msg);
	msg.file_id = fsp->file_id;
	msg.open_persistent_id = fsp->op->global->open_persistent_id;
	msg.until = timeval_to_nttime(&until);

	DEBUG(10, ("smbd: %s mark file %s as disconnected at %s with timeout "
		   "at %s in %fs\n",
		   server_id_str_buf(self, &tmp),
		   file_id_string_tos(&fsp->file_id),
		   timeval_string(talloc_tos(), &disconnect_time, true),
		   timeval_string(talloc_tos(), &until, true),
		   fsp->op->global->durable_timeout_msec/1000.0));

	SMB_ASSERT(server_id_is_disconnected(&fsp->op->global->server_id));
	SMB_ASSERT(!server_id_equal(&self, &smbd_scavenger_state->parent_id));
	SMB_ASSERT(!smbd_scavenger_state->am_scavenger);

	msg_blob = data_blob_const(&msg, sizeof(msg));
	DEBUG(10, ("send message to scavenger\n"));

	status = messaging_send(smbd_scavenger_state->msg,
				smbd_scavenger_state->parent_id,
				MSG_SMB_SCAVENGER,
				&msg_blob);
	if (!NT_STATUS_IS_OK(status)) {
		struct server_id_buf tmp1, tmp2;
		DEBUG(2, ("Failed to send message to parent smbd %s "
			  "from %s: %s\n",
			  server_id_str_buf(smbd_scavenger_state->parent_id,
					    &tmp1),
			  server_id_str_buf(self, &tmp2),
			  nt_errstr(status)));
	}
}
Пример #12
0
static void print_brl(struct file_id id,
			struct server_id pid, 
			enum brl_type lock_type,
			enum brl_flavour lock_flav,
			br_off start,
			br_off size,
			void *private_data)
{
	static int count;
	int i;
	static const struct {
		enum brl_type lock_type;
		const char *desc;
	} lock_types[] = {
		{ READ_LOCK, "R" },
		{ WRITE_LOCK, "W" },
		{ PENDING_READ_LOCK, "PR" },
		{ PENDING_WRITE_LOCK, "PW" },
		{ UNLOCK_LOCK, "U" }
	};
	const char *desc="X";
	const char *sharepath = "";
	const char *fname = "";
	struct share_mode_lock *share_mode;

	if (count==0) {
		d_printf("Byte range locks:\n");
		d_printf("Pid        dev:inode       R/W  start     size      SharePath               Name\n");
		d_printf("--------------------------------------------------------------------------------\n");
	}
	count++;

	share_mode = fetch_share_mode_unlocked(NULL, id, "__unspecified__", "__unspecified__");
	if (share_mode) {
		sharepath = share_mode->servicepath;
		fname = share_mode->filename;
	}

	for (i=0;i<ARRAY_SIZE(lock_types);i++) {
		if (lock_type == lock_types[i].lock_type) {
			desc = lock_types[i].desc;
		}
	}

	d_printf("%-10s %-15s %-4s %-9.0f %-9.0f %-24s %-24s\n", 
		 procid_str_static(&pid), file_id_string_tos(&id),
		 desc,
		 (double)start, (double)size,
		 sharepath, fname);

	TALLOC_FREE(share_mode);
}
Пример #13
0
bool remove_oplock(files_struct *fsp)
{
	bool ret;
	struct share_mode_lock *lck;

	DEBUG(10, ("remove_oplock called for %s\n",
		   fsp_str_dbg(fsp)));

	/* Remove the oplock flag from the sharemode. */
	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_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, %s, %s\n",
			 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
			 file_id_string_tos(&fsp->file_id)));
	}
	release_file_oplock(fsp);

	ret = update_num_read_oplocks(fsp, lck);
	if (!ret) {
		DEBUG(0, ("%s: update_num_read_oplocks failed for "
			 "file %s, %s, %s\n",
			  __func__, fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
			 file_id_string_tos(&fsp->file_id)));
	}

	TALLOC_FREE(lck);
	return ret;
}
Пример #14
0
char *share_mode_str(TALLOC_CTX *ctx, int num, const struct share_mode_entry *e)
{
	return talloc_asprintf(ctx, "share_mode_entry[%d]: "
		 "pid = %s, share_access = 0x%x, private_options = 0x%x, "
		 "access_mask = 0x%x, mid = 0x%llx, type= 0x%x, gen_id = %llu, "
		 "uid = %u, flags = %u, file_id %s, name_hash = 0x%x",
		 num,
		 procid_str_static(&e->pid),
		 e->share_access, e->private_options,
		 e->access_mask, (unsigned long long)e->op_mid,
		 e->op_type, (unsigned long long)e->share_file_id,
		 (unsigned int)e->uid, (unsigned int)e->flags,
		 file_id_string_tos(&e->id),
		 (unsigned int)e->name_hash);
}
Пример #15
0
bool set_write_time(struct file_id fileid, struct timespec write_time)
{
	struct share_mode_lock *lck;

	DEBUG(5,("set_write_time: %s id=%s\n",
		 timestring(talloc_tos(),
			    convert_timespec_to_time_t(write_time)),
		 file_id_string_tos(&fileid)));

	lck = get_existing_share_mode_lock(talloc_tos(), fileid);
	if (lck == NULL) {
		return False;
	}

	if (timespec_compare(&lck->data->old_write_time, &write_time) != 0) {
		lck->data->modified = True;
		lck->data->old_write_time = write_time;
	}

	TALLOC_FREE(lck);
	return True;
}
Пример #16
0
NTSTATUS set_file_oplock(files_struct *fsp)
{
	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) &&
	    use_kernel &&
	    !koplocks->ops->set_oplock(koplocks, fsp, fsp->oplock_type))
	{
		return map_nt_error_from_unix(errno);
	}

	fsp->sent_oplock_break = NO_BREAK_SENT;
	if (fsp->oplock_type == LEVEL_II_OPLOCK) {
		sconn->oplocks.level_II_open++;
	} else if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
		sconn->oplocks.exclusive_open++;
	}

	DEBUG(5,("set_file_oplock: granted oplock on file %s, %s/%lu, "
		    "tv_sec = %x, tv_usec = %x\n",
		 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 NT_STATUS_OK;
}
Пример #17
0
static void print_brl(struct file_id id,
			struct server_id pid, 
			enum brl_type lock_type,
			enum brl_flavour lock_flav,
			br_off start,
			br_off size,
			void *private_data)
{
	static int count;
	int i;
	static const struct {
		enum brl_type lock_type;
		const char *desc;
	} lock_types[] = {
		{ READ_LOCK, "R" },
		{ WRITE_LOCK, "W" },
		{ PENDING_READ_LOCK, "PR" },
		{ PENDING_WRITE_LOCK, "PW" },
		{ UNLOCK_LOCK, "U" }
	};
	const char *desc="X";
	const char *sharepath = "";
	char *fname = NULL;
	struct share_mode_lock *share_mode;

	if (count==0) {
		d_printf("Byte range locks:\n");
		d_printf("Pid        dev:inode       R/W  start     size      SharePath               Name\n");
		d_printf("--------------------------------------------------------------------------------\n");
	}
	count++;

	share_mode = fetch_share_mode_unlocked(NULL, id);
	if (share_mode) {
		bool has_stream = share_mode->data->stream_name != NULL;

		fname = talloc_asprintf(NULL, "%s%s%s",
					share_mode->data->base_name,
					has_stream ? ":" : "",
					has_stream ?
					share_mode->data->stream_name :
					"");
	} else {
		fname = talloc_strdup(NULL, "");
		if (fname == NULL) {
			return;
		}
	}

	for (i=0;i<ARRAY_SIZE(lock_types);i++) {
		if (lock_type == lock_types[i].lock_type) {
			desc = lock_types[i].desc;
		}
	}

	d_printf("%-10s %-15s %-4s %-9.0f %-9.0f %-24s %-24s\n", 
		 procid_str_static(&pid), file_id_string_tos(&id),
		 desc,
		 (double)start, (double)size,
		 sharepath, fname);

	TALLOC_FREE(fname);
	TALLOC_FREE(share_mode);
}
Пример #18
0
static NTSTATUS close_remove_share_mode(files_struct *fsp,
					enum file_close_type close_type)
{
	connection_struct *conn = fsp->conn;
	struct server_id self = messaging_server_id(conn->sconn->msg_ctx);
	bool delete_file = false;
	bool changed_user = false;
	struct share_mode_lock *lck = NULL;
	NTSTATUS status = NT_STATUS_OK;
	NTSTATUS tmp_status;
	struct file_id id;
	const struct security_unix_token *del_token = NULL;
	const struct security_token *del_nt_token = NULL;
	bool got_tokens = false;
	bool normal_close;
	int ret_flock, retries = 1;

	/* Ensure any pending write time updates are done. */
	if (fsp->update_write_time_event) {
		update_write_time_handler(fsp->conn->sconn->ev_ctx,
					fsp->update_write_time_event,
					timeval_current(),
					(void *)fsp);
	}

	/*
	 * Lock the share entries, and determine if we should delete
	 * on close. If so delete whilst the lock is still in effect.
	 * This prevents race conditions with the file being created. JRA.
	 */

	lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
	if (lck == NULL) {
		DEBUG(0, ("close_remove_share_mode: Could not get share mode "
			  "lock for file %s\n", fsp_str_dbg(fsp)));
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (fsp->write_time_forced) {
		DEBUG(10,("close_remove_share_mode: write time forced "
			"for file %s\n",
			fsp_str_dbg(fsp)));
		set_close_write_time(fsp, lck->data->changed_write_time);
	} else if (fsp->update_write_time_on_close) {
		/* Someone had a pending write. */
		if (null_timespec(fsp->close_write_time)) {
			DEBUG(10,("close_remove_share_mode: update to current time "
				"for file %s\n",
				fsp_str_dbg(fsp)));
			/* Update to current time due to "normal" write. */
			set_close_write_time(fsp, timespec_current());
		} else {
			DEBUG(10,("close_remove_share_mode: write time pending "
				"for file %s\n",
				fsp_str_dbg(fsp)));
			/* Update to time set on close call. */
			set_close_write_time(fsp, fsp->close_write_time);
		}
	}

	if (fsp->initial_delete_on_close &&
			!is_delete_on_close_set(lck, fsp->name_hash)) {
		bool became_user = False;

		/* Initial delete on close was set and no one else
		 * wrote a real delete on close. */

		if (get_current_vuid(conn) != fsp->vuid) {
			become_user(conn, fsp->vuid);
			became_user = True;
		}
		fsp->delete_on_close = true;
		set_delete_on_close_lck(fsp, lck,
				get_current_nttok(conn),
				get_current_utok(conn));
		if (became_user) {
			unbecome_user();
		}
	}

	delete_file = is_delete_on_close_set(lck, fsp->name_hash);

	if (delete_file) {
		int i;
		/* See if others still have the file open via this pathname.
		   If this is the case, then don't delete. If all opens are
		   POSIX delete now. */
		for (i=0; i<lck->data->num_share_modes; i++) {
			struct share_mode_entry *e = &lck->data->share_modes[i];

			if (!is_valid_share_mode_entry(e)) {
				continue;
			}
			if (e->name_hash != fsp->name_hash) {
				continue;
			}
			if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN)
			    && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
				continue;
			}
			if (serverid_equal(&self, &e->pid) &&
			    (e->share_file_id == fsp->fh->gen_id)) {
				continue;
			}
			if (share_mode_stale_pid(lck->data, i)) {
				continue;
			}
			delete_file = False;
			break;
		}
	}

	/*
	 * NT can set delete_on_close of the last open
	 * reference to a file.
	 */

	normal_close = (close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE);

	if (!normal_close || !delete_file) {
		status = NT_STATUS_OK;
		goto done;
	}

	/*
	 * Ok, we have to delete the file
	 */

	DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
		 "- deleting file.\n", fsp_str_dbg(fsp)));

	/*
	 * Don't try to update the write time when we delete the file
	 */
	fsp->update_write_time_on_close = false;

	got_tokens = get_delete_on_close_token(lck, fsp->name_hash,
					&del_nt_token, &del_token);
	SMB_ASSERT(got_tokens);

	if (!unix_token_equal(del_token, get_current_utok(conn))) {
		/* Become the user who requested the delete. */

		DEBUG(5,("close_remove_share_mode: file %s. "
			"Change user to uid %u\n",
			fsp_str_dbg(fsp),
			(unsigned int)del_token->uid));

		if (!push_sec_ctx()) {
			smb_panic("close_remove_share_mode: file %s. failed to push "
				  "sec_ctx.\n");
		}

		set_sec_ctx(del_token->uid,
			    del_token->gid,
			    del_token->ngroups,
			    del_token->groups,
			    del_nt_token);

		changed_user = true;
	}

	/* We can only delete the file if the name we have is still valid and
	   hasn't been renamed. */

	tmp_status = vfs_stat_fsp(fsp);
	if (!NT_STATUS_IS_OK(tmp_status)) {
		DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
			 "was set and stat failed with error %s\n",
			 fsp_str_dbg(fsp), nt_errstr(tmp_status)));
		/*
		 * Don't save the errno here, we ignore this error
		 */
		goto done;
	}

	id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st);

	if (!file_id_equal(&fsp->file_id, &id)) {
		DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
			 "was set and dev and/or inode does not match\n",
			 fsp_str_dbg(fsp)));
		DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
			 "stat file_id %s\n",
			 fsp_str_dbg(fsp),
			 file_id_string_tos(&fsp->file_id),
			 file_id_string_tos(&id)));
		/*
		 * Don't save the errno here, we ignore this error
		 */
		goto done;
	}

	if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
	    && !is_ntfs_stream_smb_fname(fsp->fsp_name)) {

		status = delete_all_streams(conn, fsp->fsp_name->base_name);

		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(5, ("delete_all_streams failed: %s\n",
				  nt_errstr(status)));
			goto done;
		}
	}

retry_delete:
	/* temporary files with delete on close set will not be deleted on a
	 * cifs share using a netapp backend since they are opened with
	 * read + write access mask.
	 * close the file to allow the delete.
	 */
	if (fsp->can_write && !S_ISDIR(fsp->fsp_name->st.st_ex_mode) &&
	    fsp->fh->ref_count == 1 && retries) {
		status = fd_close(fsp);
		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(3, ("close_remove_share_mode: Error %s closing %s\n",
				nt_errstr(status),
				smb_fname_str_dbg(fsp->fsp_name)));
			goto skip_retry;
		}
		if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
			/*
			* This call can potentially fail as another smbd may
			* have had the file open with delete on close set and
			* deleted it when its last reference to this file
			* went away. Hence we log this but not at debug level
			* zero.
			*/

			DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
				 "was set and unlink failed with error %s\n",
				 fsp_str_dbg(fsp), strerror(errno)));

			status = map_nt_error_from_unix(errno);
			retries = 0;
			goto retry_delete;
		}
	} else {
		if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
			/*
			 * This call can potentially fail as another smbd may
			 * have had the file open with delete on close set and
			 * deleted it when its last reference to this file
			 * went away. Hence we log this but not at debug level
			 * zero.
			 */

			DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
				 "was set and unlink failed with error %s\n",
				 fsp_str_dbg(fsp), strerror(errno)));

			status = map_nt_error_from_unix(errno);
		}
	}

	/* As we now have POSIX opens which can unlink
 	 * with other open files we may have taken
 	 * this code path with more than one share mode
 	 * entry - ensure we only delete once by resetting
 	 * the delete on close flag. JRA.
 	 */

skip_retry:
	fsp->delete_on_close = false;
	reset_delete_on_close_lck(fsp, lck);

 done:

	if (changed_user) {
		/* unbecome user. */
		pop_sec_ctx();
	}

	/* remove filesystem sharemodes */
	ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, 0, 0);
	if (ret_flock == -1) {
		DEBUG(2, ("close_remove_share_mode: removing kernel flock for "
					"%s failed: %s\n", fsp_str_dbg(fsp),
					strerror(errno)));
	}

	if (!del_share_mode(lck, fsp)) {
		DEBUG(0, ("close_remove_share_mode: Could not delete share "
			  "entry for file %s\n", fsp_str_dbg(fsp)));
	}

	TALLOC_FREE(lck);

	if (delete_file) {
		/*
		 * Do the notification after we released the share
		 * mode lock. Inside notify_fname we take out another
		 * tdb lock. With ctdb also accessing our databases,
		 * this can lead to deadlocks. Putting this notify
		 * after the TALLOC_FREE(lck) above we avoid locking
		 * two records simultaneously. Notifies are async and
		 * informational only, so calling the notify_fname
		 * without holding the share mode lock should not do
		 * any harm.
		 */
		notify_fname(conn, NOTIFY_ACTION_REMOVED,
			     FILE_NOTIFY_CHANGE_FILE_NAME,
			     fsp->fsp_name->base_name);
	}

	return status;
}
Пример #19
0
bool remove_oplock(files_struct *fsp)
{
	bool ret;
	struct share_mode_lock *lck;

	DEBUG(10, ("remove_oplock called for %s\n",
		   fsp_str_dbg(fsp)));

	/* Remove the oplock flag from the sharemode. */
	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_str_dbg(fsp)));
		return False;
	}

	if (fsp->oplock_type == LEVEL_II_OPLOCK) {

		/*
		 * If we're the only LEVEL_II holder, we have to remove the
		 * have_read_oplocks from the brlock entry
		 */

		struct share_mode_data *data = lck->data;
		uint32_t i, num_level2;

		num_level2 = 0;
		for (i=0; i<data->num_share_modes; i++) {
			if (data->share_modes[i].op_type == LEVEL_II_OPLOCK) {
				num_level2 += 1;
			}
			if (num_level2 > 1) {
				/*
				 * No need to count them all...
				 */
				break;
			}
		}

		if (num_level2 == 1) {
			/*
			 * That's only us. We are dropping that level2 oplock,
			 * so remove the brlock flag.
			 */
			struct byte_range_lock *brl;

			brl = brl_get_locks(talloc_tos(), fsp);
			if (brl) {
				brl_set_have_read_oplocks(brl, false);
				TALLOC_FREE(brl);
			}
		}
	}

	ret = remove_share_oplock(lck, fsp);
	if (!ret) {
		DEBUG(0,("remove_oplock: failed to remove share oplock for "
			 "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);
	return ret;
}
Пример #20
0
static void process_oplock_break_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;
	files_struct *fsp;
	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;
	uint16_t break_to;

	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);
	break_to = msg.op_type;

	DEBUG(10, ("Got oplock break to %u message from pid %s: %s/%llu\n",
		   (unsigned)break_to, server_id_str(talloc_tos(), &src),
		   file_id_string_tos(&msg.id),
		   (unsigned long long)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
		 * get to process this message, we have closed the file. */
		DEBUG(3, ("Did not find fsp\n"));
		return;
	}

	if (fsp->sent_oplock_break != NO_BREAK_SENT) {
		/*
		 * Nothing to do anymore
		 */
		return;
	}

	if (break_to == fsp->oplock_type) {
		DEBUG(3, ("Already downgraded oplock on %s: %s\n",
			  file_id_string_tos(&fsp->file_id),
			  fsp_str_dbg(fsp)));
		return;
	}

	use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;

	if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
	    (break_to != NO_OPLOCK) &&
	    !(use_kernel && !(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 (serverid_equal(&self, &src)) {
		wait_before_sending_break();
	}

	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);
	}

	if ((fsp->oplock_type == LEVEL_II_OPLOCK) && (break_to == NO_OPLOCK)) {
		/*
		 * This is an async break without a reply and thus no timeout
		 */
		remove_oplock(fsp);
		return;
	}
	fsp->sent_oplock_break = break_to_level2 ? LEVEL_II_BREAK_SENT:BREAK_TO_NONE_SENT;
	add_oplock_timeout_handler(fsp);
}
Пример #21
0
static files_struct *irix_oplock_receive_message(struct kernel_oplocks *_ctx)
{
	struct irix_oplocks_context *ctx = talloc_get_type(_ctx->private_data,
					   struct irix_oplocks_context);
	oplock_stat_t os;
	char dummy;
	struct file_id fileid;
	files_struct *fsp;

	/*
	 * TODO: is it correct to assume we only get one
	 * oplock break, for each byte we read from the pipe?
	 */
	ctx->pending = false;

	/*
	 * Read one byte of zero to clear the
	 * kernel break notify message.
	 */

	if(read(ctx->read_fd, &dummy, 1) != 1) {
		DEBUG(0,("irix_oplock_receive_message: read of kernel "
			 "notification failed. Error was %s.\n",
			 strerror(errno) ));
		return NULL;
	}

	/*
	 * Do a query to get the
	 * device and inode of the file that has the break
	 * request outstanding.
	 */

	if(sys_fcntl_ptr(ctx->read_fd, F_OPLKSTAT, &os) < 0) {
		DEBUG(0,("irix_oplock_receive_message: fcntl of kernel "
			 "notification failed. Error was %s.\n",
			 strerror(errno) ));
		if(errno == EAGAIN) {
			/*
			 * Duplicate kernel break message - ignore.
			 */
			return NULL;
		}
		return NULL;
	}

	/*
	 * We only have device and inode info here - we have to guess that this
	 * is the first fsp open with this dev,ino pair.
	 *
	 * NOTE: this doesn't work if any VFS modules overloads
	 *       the file_id_create() hook!
	 */

	fileid = file_id_create_dev((SMB_DEV_T)os.os_dev,
				    (SMB_INO_T)os.os_ino);
	if ((fsp = file_find_di_first(smbd_server_conn, fileid)) == NULL) {
		DEBUG(0,("irix_oplock_receive_message: unable to find open "
			 "file with dev = %x, inode = %.0f\n",
			 (unsigned int)os.os_dev, (double)os.os_ino ));
		return NULL;
	}
     
	DEBUG(5,("irix_oplock_receive_message: kernel oplock break request "
		 "received for file_id %s gen_id = %ul",
		 file_id_string_tos(&fsp->file_id),
		 fsp->fh->gen_id ));

	return fsp;
}
Пример #22
0
static NTSTATUS close_remove_share_mode(files_struct *fsp,
                                        enum file_close_type close_type)
{
    connection_struct *conn = fsp->conn;
    bool delete_file = false;
    bool changed_user = false;
    struct share_mode_lock *lck = NULL;
    NTSTATUS status = NT_STATUS_OK;
    NTSTATUS tmp_status;
    struct file_id id;

    /* Ensure any pending write time updates are done. */
    if (fsp->update_write_time_event) {
        update_write_time_handler(smbd_event_context(),
                                  fsp->update_write_time_event,
                                  timeval_current(),
                                  (void *)fsp);
    }

    /*
     * Lock the share entries, and determine if we should delete
     * on close. If so delete whilst the lock is still in effect.
     * This prevents race conditions with the file being created. JRA.
     */

    lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
                              NULL);

    if (lck == NULL) {
        DEBUG(0, ("close_remove_share_mode: Could not get share mode "
                  "lock for file %s\n", fsp_str_dbg(fsp)));
        status = NT_STATUS_INVALID_PARAMETER;
        goto done;
    }

    if (fsp->write_time_forced) {
        DEBUG(10,("close_remove_share_mode: write time forced "
                  "for file %s\n",
                  fsp_str_dbg(fsp)));
        set_close_write_time(fsp, lck->changed_write_time);
    } else if (fsp->update_write_time_on_close) {
        /* Someone had a pending write. */
        if (null_timespec(fsp->close_write_time)) {
            DEBUG(10,("close_remove_share_mode: update to current time "
                      "for file %s\n",
                      fsp_str_dbg(fsp)));
            /* Update to current time due to "normal" write. */
            set_close_write_time(fsp, timespec_current());
        } else {
            DEBUG(10,("close_remove_share_mode: write time pending "
                      "for file %s\n",
                      fsp_str_dbg(fsp)));
            /* Update to time set on close call. */
            set_close_write_time(fsp, fsp->close_write_time);
        }
    }

    if (!del_share_mode(lck, fsp)) {
        DEBUG(0, ("close_remove_share_mode: Could not delete share "
                  "entry for file %s\n",
                  fsp_str_dbg(fsp)));
    }

    if (fsp->initial_delete_on_close && (lck->delete_token == NULL)) {
        bool became_user = False;

        /* Initial delete on close was set and no one else
         * wrote a real delete on close. */

        if (current_user.vuid != fsp->vuid) {
            become_user(conn, fsp->vuid);
            became_user = True;
        }
        fsp->delete_on_close = true;
        set_delete_on_close_lck(lck, True, &current_user.ut);
        if (became_user) {
            unbecome_user();
        }
    }

    delete_file = lck->delete_on_close;

    if (delete_file) {
        int i;
        /* See if others still have the file open. If this is the
         * case, then don't delete. If all opens are POSIX delete now. */
        for (i=0; i<lck->num_share_modes; i++) {
            struct share_mode_entry *e = &lck->share_modes[i];
            if (is_valid_share_mode_entry(e)) {
                if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
                    continue;
                }
                delete_file = False;
                break;
            }
        }
    }

    /* Notify any deferred opens waiting on this close. */
    notify_deferred_opens(lck);
    reply_to_oplock_break_requests(fsp);

    /*
     * NT can set delete_on_close of the last open
     * reference to a file.
     */

    if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
            || !delete_file
            || (lck->delete_token == NULL)) {
        TALLOC_FREE(lck);
        return NT_STATUS_OK;
    }

    /*
     * Ok, we have to delete the file
     */

    DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
             "- deleting file.\n", fsp_str_dbg(fsp)));

    /*
     * Don't try to update the write time when we delete the file
     */
    fsp->update_write_time_on_close = false;

    if (!unix_token_equal(lck->delete_token, &current_user.ut)) {
        /* Become the user who requested the delete. */

        DEBUG(5,("close_remove_share_mode: file %s. "
                 "Change user to uid %u\n",
                 fsp_str_dbg(fsp),
                 (unsigned int)lck->delete_token->uid));

        if (!push_sec_ctx()) {
            smb_panic("close_remove_share_mode: file %s. failed to push "
                      "sec_ctx.\n");
        }

        set_sec_ctx(lck->delete_token->uid,
                    lck->delete_token->gid,
                    lck->delete_token->ngroups,
                    lck->delete_token->groups,
                    NULL);

        changed_user = true;
    }

    /* We can only delete the file if the name we have is still valid and
       hasn't been renamed. */

    tmp_status = vfs_stat_fsp(fsp);
    if (!NT_STATUS_IS_OK(tmp_status)) {
        DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
                 "was set and stat failed with error %s\n",
                 fsp_str_dbg(fsp), nt_errstr(tmp_status)));
        /*
         * Don't save the errno here, we ignore this error
         */
        goto done;
    }

    id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st);

    if (!file_id_equal(&fsp->file_id, &id)) {
        DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
                 "was set and dev and/or inode does not match\n",
                 fsp_str_dbg(fsp)));
        DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
                 "stat file_id %s\n",
                 fsp_str_dbg(fsp),
                 file_id_string_tos(&fsp->file_id),
                 file_id_string_tos(&id)));
        /*
         * Don't save the errno here, we ignore this error
         */
        goto done;
    }

    if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
            && !is_ntfs_stream_smb_fname(fsp->fsp_name)) {

        status = delete_all_streams(conn, fsp->fsp_name->base_name);

        if (!NT_STATUS_IS_OK(status)) {
            DEBUG(5, ("delete_all_streams failed: %s\n",
                      nt_errstr(status)));
            goto done;
        }
    }


    if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
        /*
         * This call can potentially fail as another smbd may
         * have had the file open with delete on close set and
         * deleted it when its last reference to this file
         * went away. Hence we log this but not at debug level
         * zero.
         */

        DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
                 "was set and unlink failed with error %s\n",
                 fsp_str_dbg(fsp), strerror(errno)));

        status = map_nt_error_from_unix(errno);
    }

    notify_fname(conn, NOTIFY_ACTION_REMOVED,
                 FILE_NOTIFY_CHANGE_FILE_NAME,
                 fsp->fsp_name->base_name);

    /* As we now have POSIX opens which can unlink
     * with other open files we may have taken
     * this code path with more than one share mode
     * entry - ensure we only delete once by resetting
     * the delete on close flag. JRA.
     */

    fsp->delete_on_close = false;
    set_delete_on_close_lck(lck, False, NULL);

done:

    if (changed_user) {
        /* unbecome user. */
        pop_sec_ctx();
    }

    TALLOC_FREE(lck);
    return status;
}
Пример #23
0
bool rename_share_filename(struct messaging_context *msg_ctx,
			struct share_mode_lock *lck,
			const char *servicepath,
			uint32_t orig_name_hash,
			uint32_t new_name_hash,
			const struct smb_filename *smb_fname_dst)
{
	struct share_mode_data *d = lck->data;
	size_t sp_len;
	size_t bn_len;
	size_t sn_len;
	size_t msg_len;
	char *frm = NULL;
	int i;
	bool strip_two_chars = false;
	bool has_stream = smb_fname_dst->stream_name != NULL;
	struct server_id self_pid = messaging_server_id(msg_ctx);

	DEBUG(10, ("rename_share_filename: servicepath %s newname %s\n",
		   servicepath, smb_fname_dst->base_name));

	/*
	 * rename_internal_fsp() and rename_internals() add './' to
	 * head of newname if newname does not contain a '/'.
	 */
	if (smb_fname_dst->base_name[0] &&
	    smb_fname_dst->base_name[1] &&
	    smb_fname_dst->base_name[0] == '.' &&
	    smb_fname_dst->base_name[1] == '/') {
		strip_two_chars = true;
	}

	d->servicepath = talloc_strdup(d, servicepath);
	d->base_name = talloc_strdup(d, smb_fname_dst->base_name +
				       (strip_two_chars ? 2 : 0));
	d->stream_name = talloc_strdup(d, smb_fname_dst->stream_name);
	if (d->base_name == NULL ||
	    (has_stream && d->stream_name == NULL) ||
	    d->servicepath == NULL) {
		DEBUG(0, ("rename_share_filename: talloc failed\n"));
		return False;
	}
	d->modified = True;

	sp_len = strlen(d->servicepath);
	bn_len = strlen(d->base_name);
	sn_len = has_stream ? strlen(d->stream_name) : 0;

	msg_len = MSG_FILE_RENAMED_MIN_SIZE + sp_len + 1 + bn_len + 1 +
	    sn_len + 1;

	/* Set up the name changed message. */
	frm = talloc_array(d, char, msg_len);
	if (!frm) {
		return False;
	}

	push_file_id_24(frm, &d->id);

	DEBUG(10,("rename_share_filename: msg_len = %u\n", (unsigned int)msg_len ));

	strlcpy(&frm[24],
		d->servicepath ? d->servicepath : "",
		sp_len+1);
	strlcpy(&frm[24 + sp_len + 1],
		d->base_name ? d->base_name : "",
		bn_len+1);
	strlcpy(&frm[24 + sp_len + 1 + bn_len + 1],
		d->stream_name ? d->stream_name : "",
		sn_len+1);

	/* Send the messages. */
	for (i=0; i<d->num_share_modes; i++) {
		struct share_mode_entry *se = &d->share_modes[i];
		if (!is_valid_share_mode_entry(se)) {
			continue;
		}

		/* If this is a hardlink to the inode
		   with a different name, skip this. */
		if (se->name_hash != orig_name_hash) {
			continue;
		}

		se->name_hash = new_name_hash;

		/* But not to ourselves... */
		if (serverid_equal(&se->pid, &self_pid)) {
			continue;
		}

		if (share_mode_stale_pid(d, i)) {
			continue;
		}

		DEBUG(10,("rename_share_filename: sending rename message to "
			  "pid %s file_id %s sharepath %s base_name %s "
			  "stream_name %s\n",
			  procid_str_static(&se->pid),
			  file_id_string_tos(&d->id),
			  d->servicepath, d->base_name,
			has_stream ? d->stream_name : ""));

		messaging_send_buf(msg_ctx, se->pid, MSG_SMB_FILE_RENAME,
				   (uint8 *)frm, msg_len);
	}

	return True;
}