s3: Move the share_mode_lock handling to its own file

Signed-off-by: Jeremy Allison <jra@samba.org>

1 files changed, 0 insertions, 415 deletions

diff --git a/source3/locking/locking.c b/source3/locking/locking.c
index d98d19b399..9199591d9e 100644
--- a/source3/locking/locking.c
+++ b/source3/locking/locking.c
@@ -52,9 +52,6 @@
 
 #define NO_LOCKING_COUNT (-1)
 
-/* the locking database handle */
-static struct db_context *lock_db;
-
 /****************************************************************************
  Debugging aids :-).
 ****************************************************************************/
@@ -431,64 +428,6 @@ void locking_close_file(struct messaging_context *msg_ctx,
 	}
 }
 
-/****************************************************************************
- Initialise the locking functions.
-****************************************************************************/
-
-static bool locking_init_internal(bool read_only)
-{
-	brl_init(read_only);
-
-	if (lock_db)
-		return True;
-
-	lock_db = db_open(NULL, lock_path("locking.tdb"),
-			  lp_open_files_db_hash_size(),
-			  TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
-			  read_only?O_RDONLY:O_RDWR|O_CREAT, 0644);
-
-	if (!lock_db) {
-		DEBUG(0,("ERROR: Failed to initialise locking database\n"));
-		return False;
-	}
-
-	if (!posix_locking_init(read_only))
-		return False;
-
-	return True;
-}
-
-bool locking_init(void)
-{
-	return locking_init_internal(false);
-}
-
-bool locking_init_readonly(void)
-{
-	return locking_init_internal(true);
-}
-
-/*******************************************************************
- Deinitialize the share_mode management.
-******************************************************************/
-
-bool locking_end(void)
-{
-	brl_shutdown();
-	TALLOC_FREE(lock_db);
-	return true;
-}
-
-/*******************************************************************
- Form a static locking key for a dev/inode pair.
-******************************************************************/
-
-static TDB_DATA locking_key(const struct file_id *id, struct file_id *tmp)
-{
-	*tmp = *id;
-	return make_tdb_data((const uint8_t *)tmp, sizeof(*tmp));
-}
-
 /*******************************************************************
  Print out a share mode.
 ********************************************************************/
@@ -509,287 +448,12 @@ char *share_mode_str(TALLOC_CTX *ctx, int num, const struct share_mode_entry *e)
 		 (unsigned int)e->name_hash);
 }
 
-/*******************************************************************
- Get all share mode entries for a dev/inode pair.
-********************************************************************/
-
-static struct share_mode_data *parse_share_modes(TALLOC_CTX *mem_ctx,
-						 const TDB_DATA dbuf)
-{
-	struct share_mode_data *d;
-	int i;
-	struct server_id *pids;
-	bool *pid_exists;
-	enum ndr_err_code ndr_err;
-	DATA_BLOB blob;
-
-	d = talloc_zero(mem_ctx, struct share_mode_data);
-	if (d == NULL) {
-		DEBUG(0, ("talloc failed\n"));
-		goto fail;
-	}
-
-	blob.data = dbuf.dptr;
-	blob.length = dbuf.dsize;
-
-	ndr_err = ndr_pull_struct_blob(
-		&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
-	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
-		DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
-		goto fail;
-	}
-
-	d->modified = false;
-	d->fresh = false;
-
-	if (DEBUGLEVEL >= 10) {
-		DEBUG(10, ("parse_share_modes:\n"));
-		NDR_PRINT_DEBUG(share_mode_data, d);
-	}
-
-	/*
-	 * Ensure that each entry has a real process attached.
-	 */
-
-	pids = talloc_array(talloc_tos(), struct server_id,
-			    d->num_share_modes);
-	if (pids == NULL) {
-		DEBUG(0, ("talloc failed\n"));
-		goto fail;
-	}
-	pid_exists = talloc_array(talloc_tos(), bool, d->num_share_modes);
-	if (pid_exists == NULL) {
-		DEBUG(0, ("talloc failed\n"));
-		goto fail;
-	}
-
-	for (i=0; i<d->num_share_modes; i++) {
-		pids[i] = d->share_modes[i].pid;
-	}
-	if (!serverids_exist(pids, d->num_share_modes, pid_exists)) {
-		DEBUG(0, ("serverid_exists failed\n"));
-		goto fail;
-	}
-
-	i = 0;
-	while (i < d->num_share_modes) {
-		struct share_mode_entry *e = &d->share_modes[i];
-		if (!pid_exists[i]) {
-			*e = d->share_modes[d->num_share_modes-1];
-			d->num_share_modes -= 1;
-			d->modified = True;
-			continue;
-		}
-		i += 1;
-	}
-	TALLOC_FREE(pid_exists);
-	TALLOC_FREE(pids);
-	return d;
-fail:
-	TALLOC_FREE(d);
-	return NULL;
-}
-
-static TDB_DATA unparse_share_modes(struct share_mode_data *d)
-{
-	DATA_BLOB blob;
-	enum ndr_err_code ndr_err;
-
-	if (DEBUGLEVEL >= 10) {
-		DEBUG(10, ("unparse_share_modes:\n"));
-		NDR_PRINT_DEBUG(share_mode_data, d);
-	}
-
-	if (d->num_share_modes == 0) {
-		DEBUG(10, ("No used share mode found\n"));
-		return make_tdb_data(NULL, 0);
-	}
-
-	ndr_err = ndr_push_struct_blob(
-		&blob, d, d, (ndr_push_flags_fn_t)ndr_push_share_mode_data);
-	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
-		smb_panic("ndr_push_share_mode_lock failed");
-	}
-
-	return make_tdb_data(blob.data, blob.length);
-}
-
-static int share_mode_data_destructor(struct share_mode_data *d)
-{
-	NTSTATUS status;
-	TDB_DATA data;
-
-	if (!d->modified) {
-		return 0;
-	}
-
-	data = unparse_share_modes(d);
-
-	if (data.dptr == NULL) {
-		if (!d->fresh) {
-			/* There has been an entry before, delete it */
-
-			status = dbwrap_record_delete(d->record);
-			if (!NT_STATUS_IS_OK(status)) {
-				char *errmsg;
-
-				DEBUG(0, ("delete_rec returned %s\n",
-					  nt_errstr(status)));
-
-				if (asprintf(&errmsg, "could not delete share "
-					     "entry: %s\n",
-					     nt_errstr(status)) == -1) {
-					smb_panic("could not delete share"
-						  "entry");
-				}
-				smb_panic(errmsg);
-			}
-		}
-		goto done;
-	}
-
-	status = dbwrap_record_store(d->record, data, TDB_REPLACE);
-	if (!NT_STATUS_IS_OK(status)) {
-		char *errmsg;
-
-		DEBUG(0, ("store returned %s\n", nt_errstr(status)));
-
-		if (asprintf(&errmsg, "could not store share mode entry: %s",
-			     nt_errstr(status)) == -1) {
-			smb_panic("could not store share mode entry");
-		}
-		smb_panic(errmsg);
-	}
-
- done:
-
-	return 0;
-}
-
-static struct share_mode_data *fresh_share_mode_lock(
-	TALLOC_CTX *mem_ctx, const char *servicepath,
-	const struct smb_filename *smb_fname,
-	const struct timespec *old_write_time)
-{
-	struct share_mode_data *d;
-
-	if ((servicepath == NULL) || (smb_fname == NULL) ||
-	    (old_write_time == NULL)) {
-		return NULL;
-	}
-
-	d = talloc_zero(mem_ctx, struct share_mode_data);
-	if (d == NULL) {
-		goto fail;
-	}
-	d->base_name = talloc_strdup(d, smb_fname->base_name);
-	if (d->base_name == NULL) {
-		goto fail;
-	}
-	if (smb_fname->stream_name != NULL) {
-		d->stream_name = talloc_strdup(d, smb_fname->stream_name);
-		if (d->stream_name == NULL) {
-			goto fail;
-		}
-	}
-	d->servicepath = talloc_strdup(d, servicepath);
-	if (d->servicepath == NULL) {
-		goto fail;
-	}
-	d->old_write_time = *old_write_time;
-	d->modified = false;
-	d->fresh = true;
-	return d;
-fail:
-	DEBUG(0, ("talloc failed\n"));
-	TALLOC_FREE(d);
-	return NULL;
-}
-
-struct share_mode_lock *get_share_mode_lock_fresh(TALLOC_CTX *mem_ctx,
-						  const struct file_id id,
-						  const char *servicepath,
-						  const struct smb_filename *smb_fname,
-						  const struct timespec *old_write_time)
-{
-	struct share_mode_lock *lck;
-	struct share_mode_data *d;
-	struct file_id tmp;
-	struct db_record *rec;
-	TDB_DATA key = locking_key(&id, &tmp);
-	TDB_DATA value;
-
-	rec = dbwrap_fetch_locked(lock_db, mem_ctx, key);
-	if (rec == NULL) {
-		DEBUG(3, ("Could not lock share entry\n"));
-		return NULL;
-	}
-
-	value = dbwrap_record_get_value(rec);
-
-	if (value.dptr == NULL) {
-		d = fresh_share_mode_lock(mem_ctx, servicepath, smb_fname,
-					  old_write_time);
-	} else {
-		d = parse_share_modes(mem_ctx, value);
-	}
-
-	if (d == NULL) {
-		DEBUG(1, ("Could not get share mode lock\n"));
-		TALLOC_FREE(rec);
-		return NULL;
-	}
-	d->id = id;
-	d->record = talloc_move(d, &rec);
-	talloc_set_destructor(d, share_mode_data_destructor);
-
-	lck = talloc(mem_ctx, struct share_mode_lock);
-	if (lck == NULL) {
-		DEBUG(1, ("talloc failed\n"));
-		TALLOC_FREE(d);
-		return NULL;
-	}
-	lck->data = talloc_move(lck, &d);
-	return lck;
-}
-
 struct share_mode_lock *get_share_mode_lock(TALLOC_CTX *mem_ctx,
 					    const struct file_id id)
 {
 	return get_share_mode_lock_fresh(mem_ctx, id, NULL, NULL, NULL);
 }
 
-struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
-						  const struct file_id id)
-{
-	struct share_mode_lock *lck;
-	struct file_id tmp;
-	TDB_DATA key = locking_key(&id, &tmp);
-	TDB_DATA data;
-	NTSTATUS status;
-
-	status = dbwrap_fetch(lock_db, talloc_tos(), key, &data);
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(3, ("Could not fetch share entry\n"));
-		return NULL;
-	}
-	if (data.dptr == NULL) {
-		return NULL;
-	}
-	lck = talloc(mem_ctx, struct share_mode_lock);
-	if (lck == NULL) {
-		TALLOC_FREE(data.dptr);
-		return NULL;
-	}
-	lck->data = parse_share_modes(mem_ctx, data);
-	TALLOC_FREE(data.dptr);
-	if (lck->data == NULL) {
-		TALLOC_FREE(lck);
-		return NULL;
-	}
-	return lck;
-}
-
 /*******************************************************************
  Sets the service name and filename for rename.
  At this point we emit "file renamed" messages to all
@@ -1373,82 +1037,3 @@ bool set_write_time(struct file_id fileid, struct timespec write_time)
 	TALLOC_FREE(lck);
 	return True;
 }
-
-
-struct forall_state {
-	void (*fn)(const struct share_mode_entry *entry,
-		   const char *sharepath,
-		   const char *fname,
-		   void *private_data);
-	void *private_data;
-};
-
-static int traverse_fn(struct db_record *rec, void *_state)
-{
-	struct forall_state *state = (struct forall_state *)_state;
-	uint32_t i;
-	TDB_DATA key;
-	TDB_DATA value;
-	DATA_BLOB blob;
-	enum ndr_err_code ndr_err;
-	struct share_mode_data *d;
-
-	key = dbwrap_record_get_key(rec);
-	value = dbwrap_record_get_value(rec);
-
-	/* Ensure this is a locking_key record. */
-	if (key.dsize != sizeof(struct file_id))
-		return 0;
-
-	d = talloc(talloc_tos(), struct share_mode_data);
-	if (d == NULL) {
-		return 0;
-	}
-
-	blob.data = value.dptr;
-	blob.length = value.dsize;
-
-	ndr_err = ndr_pull_struct_blob(
-		&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
-	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
-		DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
-		return 0;
-	}
-	for (i=0; i<d->num_share_modes; i++) {
-		state->fn(&d->share_modes[i],
-			  d->servicepath, d->base_name,
-			  state->private_data);
-	}
-	TALLOC_FREE(d);
-
-	return 0;
-}
-
-/*******************************************************************
- Call the specified function on each entry under management by the
- share mode system.
-********************************************************************/
-
-int share_mode_forall(void (*fn)(const struct share_mode_entry *, const char *,
-				 const char *, void *),
-		      void *private_data)
-{
-	struct forall_state state;
-	NTSTATUS status;
-	int count;
-
-	if (lock_db == NULL)
-		return 0;
-
-	state.fn = fn;
-	state.private_data = private_data;
-
-	status = dbwrap_traverse_read(lock_db, traverse_fn, (void *)&state,
-				      &count);
-
-	if (!NT_STATUS_IS_OK(status)) {
-		return -1;
-	} else {
-		return count;
-	}
-}