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/*
* Unix SMB/CIFS implementation.
* Locking functions
*
* Copyright (C) Andrew Tridgell 1992-2000
* Copyright (C) Jeremy Allison 1992-2006
* Copyright (C) Volker Lendecke 2005
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LOCKING_PROTO_H_
#define _LOCKING_PROTO_H_
/* The following definitions come from locking/brlock.c */
void brl_init(bool read_only);
void brl_shutdown(void);
unsigned int brl_num_locks(const struct byte_range_lock *brl);
struct files_struct *brl_fsp(struct byte_range_lock *brl);
bool byte_range_valid(uint64_t ofs, uint64_t len);
bool byte_range_overlap(uint64_t ofs1,
uint64_t len1,
uint64_t ofs2,
uint64_t len2);
NTSTATUS brl_lock_windows_default(struct byte_range_lock *br_lck,
struct lock_struct *plock);
NTSTATUS brl_lock(
struct byte_range_lock *br_lck,
uint64_t smblctx,
struct server_id pid,
br_off start,
br_off size,
enum brl_type lock_type,
enum brl_flavour lock_flav,
struct server_id *blocker_pid,
uint64_t *psmblctx);
bool brl_unlock(struct byte_range_lock *br_lck,
uint64_t smblctx,
struct server_id pid,
br_off start,
br_off size,
enum brl_flavour lock_flav);
bool brl_unlock_windows_default(struct byte_range_lock *br_lck,
const struct lock_struct *plock);
bool brl_locktest(struct byte_range_lock *br_lck,
const struct lock_struct *rw_probe);
NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
uint64_t *psmblctx,
struct server_id pid,
br_off *pstart,
br_off *psize,
enum brl_type *plock_type,
enum brl_flavour lock_flav);
bool brl_mark_disconnected(struct files_struct *fsp);
bool brl_reconnect_disconnected(struct files_struct *fsp);
void brl_close_fnum(struct byte_range_lock *br_lck);
int brl_forall(void (*fn)(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),
void *private_data);
struct byte_range_lock *brl_get_locks(TALLOC_CTX *mem_ctx,
files_struct *fsp);
struct byte_range_lock *brl_get_locks_readonly(files_struct *fsp);
bool brl_cleanup_disconnected(struct file_id fid, uint64_t open_persistent_id);
/* The following definitions come from locking/locking.c */
const char *lock_type_name(enum brl_type lock_type);
const char *lock_flav_name(enum brl_flavour lock_flav);
void init_strict_lock_struct(files_struct *fsp,
uint64_t smblctx,
br_off start,
br_off size,
enum brl_type lock_type,
struct lock_struct *plock);
bool strict_lock_check_default(files_struct *fsp,
struct lock_struct *plock);
NTSTATUS query_lock(files_struct *fsp,
uint64_t *psmblctx,
uint64_t *pcount,
uint64_t *poffset,
enum brl_type *plock_type,
enum brl_flavour lock_flav);
NTSTATUS do_lock(files_struct *fsp,
uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
struct server_id *pblocker_pid,
uint64_t *psmblctx);
NTSTATUS do_unlock(files_struct *fsp,
uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav);
void locking_close_file(files_struct *fsp,
enum file_close_type close_type);
bool locking_init(void);
bool locking_init_readonly(void);
bool locking_end(void);
char *share_mode_str(TALLOC_CTX *ctx, int num,
const struct file_id *id,
const struct share_mode_entry *e);
struct share_mode_lock *get_existing_share_mode_lock(TALLOC_CTX *mem_ctx,
struct file_id id);
struct share_mode_lock *get_share_mode_lock(
TALLOC_CTX *mem_ctx,
struct file_id id,
const char *servicepath,
const struct smb_filename *smb_fname,
const struct timespec *old_write_time);
bool file_has_read_lease(struct files_struct *fsp);
struct db_record;
NTSTATUS share_mode_do_locked(
struct file_id id,
void (*fn)(struct db_record *rec,
bool *modified_dependent,
void *private_data),
void *private_data);
NTSTATUS share_mode_wakeup_waiters(struct file_id id);
struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
struct file_id id);
struct tevent_req *fetch_share_mode_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct file_id id,
bool *queued);
NTSTATUS fetch_share_mode_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
struct share_mode_lock **_lck);
bool rename_share_filename(struct messaging_context *msg_ctx,
struct share_mode_lock *lck,
struct file_id id,
const char *servicepath,
uint32_t orig_name_hash,
uint32_t new_name_hash,
const struct smb_filename *smb_fname);
void get_file_infos(struct file_id id,
uint32_t name_hash,
bool *delete_on_close,
struct timespec *write_time);
bool is_valid_share_mode_entry(const struct share_mode_entry *e);
bool share_mode_stale_pid(struct share_mode_data *d, uint32_t idx);
bool set_share_mode(struct share_mode_lock *lck,
struct files_struct *fsp,
uid_t uid,
uint64_t mid,
uint16_t op_type,
const struct GUID *client_guid,
const struct smb2_lease_key *lease_key);
void remove_stale_share_mode_entries(struct share_mode_data *d);
bool del_share_mode(struct share_mode_lock *lck, files_struct *fsp);
bool mark_share_mode_disconnected(struct share_mode_lock *lck,
struct files_struct *fsp);
bool remove_share_oplock(struct share_mode_lock *lck, files_struct *fsp);
bool downgrade_share_oplock(struct share_mode_lock *lck, files_struct *fsp);
bool get_delete_on_close_token(struct share_mode_lock *lck,
uint32_t name_hash,
const struct security_token **pp_nt_tok,
const struct security_unix_token **pp_tok);
void reset_delete_on_close_lck(files_struct *fsp,
struct share_mode_lock *lck);
void set_delete_on_close_lck(files_struct *fsp,
struct share_mode_lock *lck,
const struct security_token *nt_tok,
const struct security_unix_token *tok);
bool set_delete_on_close(files_struct *fsp, bool delete_on_close,
const struct security_token *nt_tok,
const struct security_unix_token *tok);
bool is_delete_on_close_set(struct share_mode_lock *lck, uint32_t name_hash);
bool set_sticky_write_time(struct file_id fileid, struct timespec write_time);
bool set_write_time(struct file_id fileid, struct timespec write_time);
struct timespec get_share_mode_write_time(struct share_mode_lock *lck);
bool file_has_open_streams(files_struct *fsp);
int share_mode_forall(int (*fn)(struct file_id fid,
const struct share_mode_data *data,
void *private_data),
void *private_data);
int share_entry_forall(int (*fn)(struct file_id fid,
const struct share_mode_data *data,
const struct share_mode_entry *entry,
void *private_data),
void *private_data);
bool share_mode_cleanup_disconnected(struct file_id id,
uint64_t open_persistent_id);
bool share_mode_forall_leases(
struct share_mode_lock *lck,
bool (*fn)(struct share_mode_lock *lck,
struct share_mode_entry *e,
void *private_data),
void *private_data);
/* The following definitions come from locking/posix.c */
bool is_posix_locked(files_struct *fsp,
uint64_t *pu_offset,
uint64_t *pu_count,
enum brl_type *plock_type,
enum brl_flavour lock_flav);
bool posix_locking_init(bool read_only);
bool posix_locking_end(void);
int fd_close_posix(const struct files_struct *fsp);
bool set_posix_lock_windows_flavour(files_struct *fsp,
uint64_t u_offset,
uint64_t u_count,
enum brl_type lock_type,
const struct lock_context *lock_ctx,
const struct lock_struct *plocks,
int num_locks,
int *errno_ret);
bool release_posix_lock_windows_flavour(files_struct *fsp,
uint64_t u_offset,
uint64_t u_count,
enum brl_type deleted_lock_type,
const struct lock_context *lock_ctx,
const struct lock_struct *plocks,
int num_locks);
bool set_posix_lock_posix_flavour(files_struct *fsp,
uint64_t u_offset,
uint64_t u_count,
enum brl_type lock_type,
const struct lock_context *lock_ctx,
int *errno_ret);
bool release_posix_lock_posix_flavour(files_struct *fsp,
uint64_t u_offset,
uint64_t u_count,
const struct lock_context *lock_ctx,
const struct lock_struct *plocks,
int num_locks);
/* The following definitions come from locking/leases_util.c */
uint32_t map_oplock_to_lease_type(uint16_t op_type);
uint32_t fsp_lease_type(const struct files_struct *fsp);
uint32_t lease_type_is_exclusive(uint32_t lease_type);
bool fsp_lease_type_is_exclusive(const struct files_struct *fsp);
#endif /* _LOCKING_PROTO_H_ */
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