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0d4c4e045e
This caches share_mode_data->flags in the fsp, cache flush happening on tdb_seqnum change. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
258 lines
9.0 KiB
C
258 lines
9.0 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* Locking functions
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*
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* Copyright (C) Andrew Tridgell 1992-2000
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* Copyright (C) Jeremy Allison 1992-2006
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* Copyright (C) Volker Lendecke 2005
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _LOCKING_PROTO_H_
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#define _LOCKING_PROTO_H_
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/* The following definitions come from locking/brlock.c */
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void brl_init(bool read_only);
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void brl_shutdown(void);
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unsigned int brl_num_locks(const struct byte_range_lock *brl);
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struct files_struct *brl_fsp(struct byte_range_lock *brl);
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uint32_t brl_num_read_oplocks(const struct byte_range_lock *brl);
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void brl_set_num_read_oplocks(struct byte_range_lock *brl,
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uint32_t num_read_oplocks);
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NTSTATUS brl_lock_windows_default(struct byte_range_lock *br_lck,
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struct lock_struct *plock);
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NTSTATUS brl_lock(
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struct byte_range_lock *br_lck,
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uint64_t smblctx,
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struct server_id pid,
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br_off start,
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br_off size,
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enum brl_type lock_type,
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enum brl_flavour lock_flav,
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struct server_id *blocker_pid,
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uint64_t *psmblctx);
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bool brl_unlock(struct byte_range_lock *br_lck,
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uint64_t smblctx,
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struct server_id pid,
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br_off start,
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br_off size,
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enum brl_flavour lock_flav);
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bool brl_unlock_windows_default(struct byte_range_lock *br_lck,
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const struct lock_struct *plock);
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bool brl_locktest(struct byte_range_lock *br_lck,
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const struct lock_struct *rw_probe);
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NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
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uint64_t *psmblctx,
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struct server_id pid,
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br_off *pstart,
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br_off *psize,
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enum brl_type *plock_type,
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enum brl_flavour lock_flav);
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bool brl_mark_disconnected(struct files_struct *fsp);
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bool brl_reconnect_disconnected(struct files_struct *fsp);
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void brl_close_fnum(struct byte_range_lock *br_lck);
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int brl_forall(void (*fn)(struct file_id id, struct server_id pid,
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enum brl_type lock_type,
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enum brl_flavour lock_flav,
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br_off start, br_off size,
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void *private_data),
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void *private_data);
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struct byte_range_lock *brl_get_locks(TALLOC_CTX *mem_ctx,
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files_struct *fsp);
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struct byte_range_lock *brl_get_locks_readonly(files_struct *fsp);
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bool brl_cleanup_disconnected(struct file_id fid, uint64_t open_persistent_id);
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/* The following definitions come from locking/locking.c */
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const char *lock_type_name(enum brl_type lock_type);
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const char *lock_flav_name(enum brl_flavour lock_flav);
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void init_strict_lock_struct(files_struct *fsp,
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uint64_t smblctx,
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br_off start,
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br_off size,
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enum brl_type lock_type,
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struct lock_struct *plock);
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bool strict_lock_check_default(files_struct *fsp,
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struct lock_struct *plock);
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NTSTATUS query_lock(files_struct *fsp,
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uint64_t *psmblctx,
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uint64_t *pcount,
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uint64_t *poffset,
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enum brl_type *plock_type,
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enum brl_flavour lock_flav);
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NTSTATUS do_lock(files_struct *fsp,
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uint64_t smblctx,
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uint64_t count,
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uint64_t offset,
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enum brl_type lock_type,
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enum brl_flavour lock_flav,
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struct server_id *pblocker_pid,
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uint64_t *psmblctx);
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NTSTATUS do_unlock(files_struct *fsp,
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uint64_t smblctx,
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uint64_t count,
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uint64_t offset,
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enum brl_flavour lock_flav);
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void locking_close_file(files_struct *fsp,
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enum file_close_type close_type);
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bool locking_init(void);
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bool locking_init_readonly(void);
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bool locking_end(void);
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char *share_mode_str(TALLOC_CTX *ctx, int num,
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const struct file_id *id,
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const struct share_mode_entry *e);
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struct share_mode_lock *get_existing_share_mode_lock(TALLOC_CTX *mem_ctx,
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struct file_id id);
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struct share_mode_lock *get_share_mode_lock(
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TALLOC_CTX *mem_ctx,
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struct file_id id,
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const char *servicepath,
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const struct smb_filename *smb_fname,
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const struct timespec *old_write_time);
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bool file_has_read_lease(struct files_struct *fsp);
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struct db_record;
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NTSTATUS share_mode_do_locked(
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struct file_id id,
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void (*fn)(struct db_record *rec,
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bool *modified_dependent,
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void *private_data),
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void *private_data);
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struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
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struct file_id id);
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struct tevent_req *fetch_share_mode_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct file_id id,
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bool *queued);
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NTSTATUS fetch_share_mode_recv(struct tevent_req *req,
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TALLOC_CTX *mem_ctx,
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struct share_mode_lock **_lck);
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bool rename_share_filename(struct messaging_context *msg_ctx,
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struct share_mode_lock *lck,
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struct file_id id,
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const char *servicepath,
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uint32_t orig_name_hash,
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uint32_t new_name_hash,
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const struct smb_filename *smb_fname);
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void get_file_infos(struct file_id id,
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uint32_t name_hash,
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bool *delete_on_close,
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struct timespec *write_time);
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bool is_valid_share_mode_entry(const struct share_mode_entry *e);
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bool share_mode_stale_pid(struct share_mode_data *d, uint32_t idx);
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bool set_share_mode(struct share_mode_lock *lck,
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struct files_struct *fsp,
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uid_t uid,
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uint64_t mid,
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uint16_t op_type,
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const struct GUID *client_guid,
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const struct smb2_lease_key *lease_key);
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struct share_mode_entry *find_share_mode_entry(struct share_mode_lock *lck,
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files_struct *fsp);
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void remove_stale_share_mode_entries(struct share_mode_data *d);
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bool del_share_mode(struct share_mode_lock *lck, files_struct *fsp);
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bool mark_share_mode_disconnected(struct share_mode_lock *lck,
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struct files_struct *fsp);
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bool remove_share_oplock(struct share_mode_lock *lck, files_struct *fsp);
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bool downgrade_share_oplock(struct share_mode_lock *lck, files_struct *fsp);
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bool get_delete_on_close_token(struct share_mode_lock *lck,
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uint32_t name_hash,
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const struct security_token **pp_nt_tok,
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const struct security_unix_token **pp_tok);
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void reset_delete_on_close_lck(files_struct *fsp,
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struct share_mode_lock *lck);
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void set_delete_on_close_lck(files_struct *fsp,
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struct share_mode_lock *lck,
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const struct security_token *nt_tok,
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const struct security_unix_token *tok);
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bool set_delete_on_close(files_struct *fsp, bool delete_on_close,
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const struct security_token *nt_tok,
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const struct security_unix_token *tok);
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bool is_delete_on_close_set(struct share_mode_lock *lck, uint32_t name_hash);
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bool set_sticky_write_time(struct file_id fileid, struct timespec write_time);
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bool set_write_time(struct file_id fileid, struct timespec write_time);
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struct timespec get_share_mode_write_time(struct share_mode_lock *lck);
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bool file_has_open_streams(files_struct *fsp);
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int share_mode_forall(int (*fn)(struct file_id fid,
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const struct share_mode_data *data,
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void *private_data),
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void *private_data);
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int share_entry_forall(int (*fn)(struct file_id fid,
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const struct share_mode_data *data,
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const struct share_mode_entry *entry,
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void *private_data),
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void *private_data);
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bool share_mode_cleanup_disconnected(struct file_id id,
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uint64_t open_persistent_id);
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bool share_mode_forall_leases(
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struct share_mode_lock *lck,
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bool (*fn)(struct share_mode_lock *lck,
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struct share_mode_entry *e,
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void *private_data),
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void *private_data);
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/* The following definitions come from locking/posix.c */
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bool is_posix_locked(files_struct *fsp,
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uint64_t *pu_offset,
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uint64_t *pu_count,
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enum brl_type *plock_type,
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enum brl_flavour lock_flav);
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bool posix_locking_init(bool read_only);
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bool posix_locking_end(void);
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int fd_close_posix(const struct files_struct *fsp);
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bool set_posix_lock_windows_flavour(files_struct *fsp,
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uint64_t u_offset,
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uint64_t u_count,
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enum brl_type lock_type,
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const struct lock_context *lock_ctx,
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const struct lock_struct *plocks,
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int num_locks,
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int *errno_ret);
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bool release_posix_lock_windows_flavour(files_struct *fsp,
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uint64_t u_offset,
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uint64_t u_count,
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enum brl_type deleted_lock_type,
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const struct lock_context *lock_ctx,
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const struct lock_struct *plocks,
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int num_locks);
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bool set_posix_lock_posix_flavour(files_struct *fsp,
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uint64_t u_offset,
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uint64_t u_count,
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enum brl_type lock_type,
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const struct lock_context *lock_ctx,
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int *errno_ret);
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bool release_posix_lock_posix_flavour(files_struct *fsp,
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uint64_t u_offset,
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uint64_t u_count,
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const struct lock_context *lock_ctx,
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const struct lock_struct *plocks,
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int num_locks);
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/* The following definitions come from locking/leases_util.c */
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uint32_t map_oplock_to_lease_type(uint16_t op_type);
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uint32_t fsp_lease_type(const struct files_struct *fsp);
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uint32_t lease_type_is_exclusive(uint32_t lease_type);
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bool fsp_lease_type_is_exclusive(const struct files_struct *fsp);
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#endif /* _LOCKING_PROTO_H_ */
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