2 Unix SMB/CIFS implementation.
4 POSIX NTVFS backend - structure definitions
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include "system/filesys.h"
27 #include "smb_server/smb_server.h"
28 #include "ntvfs/ntvfs.h"
30 /* this is the private structure for the posix vfs backend. It is used
31 to hold per-connection (per tree connect) state information */
33 struct smbsrv_tcon *tcon;
34 const char *base_directory;
35 struct GUID *base_fs_uuid;
37 const char *share_name;
40 struct pvfs_file *open_files;
42 struct pvfs_mangle_context *mangle_ctx;
44 struct brl_context *brl_context;
45 struct odb_context *odb_context;
46 struct sidmap_context *sidmap;
48 /* an id tree mapping open search ID to a pvfs_search_state structure */
49 struct idr_context *idtree_search;
51 /* an id tree mapping open file handle -> struct pvfs_file */
52 struct idr_context *idtree_fnum;
54 /* a list of pending async requests. Needed to support
56 struct pvfs_wait *wait_list;
58 /* the sharing violation timeout */
59 uint_t sharing_violation_delay;
61 /* filesystem attributes (see FS_ATTR_*) */
64 /* if posix:eadb is set, then this gets setup */
65 struct tdb_wrap *ea_db;
67 /* the allocation size rounding */
68 uint32_t alloc_size_rounding;
70 /* how long to keep inactive searches around for */
71 uint_t search_inactivity_time;
73 /* used to accelerate acl mapping */
75 const struct dom_sid *creator_owner;
76 const struct dom_sid *creator_group;
80 /* this is the basic information needed about a file from the filesystem */
81 struct pvfs_dos_fileinfo {
95 this is the structure returned by pvfs_resolve_name(). It holds the posix details of
96 a filename passed by the client to any function
98 struct pvfs_filename {
99 const char *original_name;
101 const char *stream_name; /* does not include :$DATA suffix */
102 uint32_t stream_id; /* this uses a hash, so is probabilistic */
104 BOOL exists; /* true if the base filename exists */
105 BOOL stream_exists; /* true if the stream exists */
107 struct pvfs_dos_fileinfo dos;
111 /* open file handle state - encapsulates the posix fd
113 Note that this is separated from the pvfs_file structure in order
114 to cope with the openx DENY_DOS semantics where a 2nd DENY_DOS open
115 on the same connection gets the same low level filesystem handle,
116 rather than a new handle
118 struct pvfs_file_handle {
121 struct pvfs_filename *name;
123 /* a unique file key to be used for open file locking */
124 DATA_BLOB odb_locking_key;
126 /* a unique file key to be used for byte range locking */
127 DATA_BLOB brl_locking_key;
129 uint32_t create_options;
131 /* this is set by the mode_information level. What does it do? */
134 /* yes, we need 2 independent positions ... */
135 uint64_t seek_offset;
138 BOOL have_opendb_entry;
140 /* we need this hook back to our parent for lock destruction */
141 struct pvfs_state *pvfs;
143 /* have we set a sticky write time that we should remove on close */
144 BOOL sticky_write_time;
147 /* open file state */
149 struct pvfs_file *next, *prev;
150 struct pvfs_file_handle *handle;
153 struct pvfs_state *pvfs;
155 uint32_t impersonation;
156 uint32_t share_access;
157 uint32_t access_mask;
159 /* we need to remember the session it was opened on,
160 as it is illegal to operate on someone elses fnum */
161 struct smbsrv_session *session;
163 /* we need to remember the client pid that
164 opened the file so SMBexit works */
167 /* a list of pending locks - used for locking cancel operations */
168 struct pvfs_pending_lock *pending_list;
170 /* a count of active locks - used to avoid calling brl_close on
176 /* flags to pvfs_resolve_name() */
177 #define PVFS_RESOLVE_WILDCARD (1<<0)
178 #define PVFS_RESOLVE_STREAMS (1<<1)
180 /* flags in pvfs->flags */
181 #define PVFS_FLAG_CI_FILESYSTEM (1<<0) /* the filesystem is case insensitive */
182 #define PVFS_FLAG_MAP_ARCHIVE (1<<1)
183 #define PVFS_FLAG_MAP_SYSTEM (1<<2)
184 #define PVFS_FLAG_MAP_HIDDEN (1<<3)
185 #define PVFS_FLAG_READONLY (1<<4)
186 #define PVFS_FLAG_STRICT_SYNC (1<<5)
187 #define PVFS_FLAG_STRICT_LOCKING (1<<6)
188 #define PVFS_FLAG_XATTR_ENABLE (1<<7)
189 #define PVFS_FLAG_FAKE_OPLOCKS (1<<8)
191 /* forward declare some anonymous structures */
194 /* types of notification for pvfs wait events */
195 enum pvfs_wait_notice {PVFS_WAIT_EVENT, PVFS_WAIT_TIMEOUT, PVFS_WAIT_CANCEL};
198 /* putting this prototype here avoids us having to expose this whole header in the
200 void *pvfs_wait_message(struct pvfs_state *pvfs,
201 struct smbsrv_request *req,
203 struct timeval end_time,
204 void (*fn)(void *, enum pvfs_wait_notice),
207 #endif /* _VFS_POSIX_H_ */