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 3 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, see <http://www.gnu.org/licenses/>.
25 #include "librpc/gen_ndr/xattr.h"
26 #include "system/filesys.h"
27 #include "ntvfs/ntvfs.h"
28 #include "ntvfs/common/ntvfs_common.h"
29 #include "dsdb/samdb/samdb.h"
34 /* this is the private structure for the posix vfs backend. It is used
35 to hold per-connection (per tree connect) state information */
37 struct ntvfs_module_context *ntvfs;
38 const char *base_directory;
39 struct GUID *base_fs_uuid;
41 const char *share_name;
44 struct pvfs_mangle_context *mangle_ctx;
46 struct brl_context *brl_context;
47 struct odb_context *odb_context;
48 struct notify_context *notify_context;
49 struct sidmap_context *sidmap;
51 /* a list of pending async requests. Needed to support
53 struct pvfs_wait *wait_list;
55 /* the sharing violation timeout (nsecs) */
56 uint_t sharing_violation_delay;
58 /* the oplock break timeout (secs) */
59 uint_t oplock_break_timeout;
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;
71 /* the open files as DLINKLIST */
72 struct pvfs_file *list;
76 /* an id tree mapping open search ID to a pvfs_search_state structure */
77 struct idr_context *idtree;
79 /* the open searches as DLINKLIST */
80 struct pvfs_search_state *list;
82 /* how long to keep inactive searches around for */
83 uint_t inactivity_time;
86 /* used to accelerate acl mapping */
88 const struct dom_sid *creator_owner;
89 const struct dom_sid *creator_group;
93 const struct pvfs_acl_ops *acl_ops;
95 /* non-flag share options */
98 mode_t force_dir_mode;
100 mode_t force_create_mode;
104 /* this is the basic information needed about a file from the filesystem */
105 struct pvfs_dos_fileinfo {
119 this is the structure returned by pvfs_resolve_name(). It holds the posix details of
120 a filename passed by the client to any function
122 struct pvfs_filename {
123 const char *original_name;
125 const char *stream_name; /* does not include :$DATA suffix */
126 uint32_t stream_id; /* this uses a hash, so is probabilistic */
128 bool exists; /* true if the base filename exists */
129 bool stream_exists; /* true if the stream exists */
131 struct pvfs_dos_fileinfo dos;
135 /* open file handle state - encapsulates the posix fd
137 Note that this is separated from the pvfs_file structure in order
138 to cope with the openx DENY_DOS semantics where a 2nd DENY_DOS open
139 on the same connection gets the same low level filesystem handle,
140 rather than a new handle
142 struct pvfs_file_handle {
145 struct pvfs_filename *name;
147 /* a unique file key to be used for open file locking */
148 DATA_BLOB odb_locking_key;
150 uint32_t create_options;
152 /* this is set by the mode_information level. What does it do? */
155 /* yes, we need 2 independent positions ... */
156 uint64_t seek_offset;
159 bool have_opendb_entry;
162 * we need to wait for oplock break requests from other processes,
163 * and we need to remember the pvfs_file so we can correctly
164 * forward the oplock break to the client
166 struct pvfs_oplock *oplock;
168 /* we need this hook back to our parent for lock destruction */
169 struct pvfs_state *pvfs;
171 /* have we set a sticky write time that we should remove on close */
172 bool sticky_write_time;
174 /* the open went through to completion */
178 /* open file state */
180 struct pvfs_file *next, *prev;
181 struct pvfs_file_handle *handle;
182 struct ntvfs_handle *ntvfs;
184 struct pvfs_state *pvfs;
186 uint32_t impersonation;
187 uint32_t share_access;
188 uint32_t access_mask;
190 /* a list of pending locks - used for locking cancel operations */
191 struct pvfs_pending_lock *pending_list;
193 /* a file handle to be used for byte range locking */
194 struct brl_handle *brl_handle;
196 /* a count of active locks - used to avoid calling brl_close on
200 /* for directories, a buffer of pending notify events */
201 struct pvfs_notify_buffer *notify_buffer;
203 /* for directories, the state of an incomplete SMB2 Find */
204 struct pvfs_search_state *search;
207 /* the state of a search started with pvfs_search_first() */
208 struct pvfs_search_state {
209 struct pvfs_search_state *prev, *next;
210 struct pvfs_state *pvfs;
213 uint16_t search_attrib;
214 uint16_t must_attrib;
215 struct pvfs_dir *dir;
218 struct ea_name *ea_names;
219 struct timed_event *te;
222 /* flags to pvfs_resolve_name() */
223 #define PVFS_RESOLVE_WILDCARD (1<<0)
224 #define PVFS_RESOLVE_STREAMS (1<<1)
226 /* flags in pvfs->flags */
227 #define PVFS_FLAG_CI_FILESYSTEM (1<<0) /* the filesystem is case insensitive */
228 #define PVFS_FLAG_MAP_ARCHIVE (1<<1)
229 #define PVFS_FLAG_MAP_SYSTEM (1<<2)
230 #define PVFS_FLAG_MAP_HIDDEN (1<<3)
231 #define PVFS_FLAG_READONLY (1<<4)
232 #define PVFS_FLAG_STRICT_SYNC (1<<5)
233 #define PVFS_FLAG_STRICT_LOCKING (1<<6)
234 #define PVFS_FLAG_XATTR_ENABLE (1<<7)
235 #define PVFS_FLAG_FAKE_OPLOCKS (1<<8)
236 #define PVFS_FLAG_LINUX_AIO (1<<9)
238 /* forward declare some anonymous structures */
241 /* types of notification for pvfs wait events */
242 enum pvfs_wait_notice {PVFS_WAIT_EVENT, PVFS_WAIT_TIMEOUT, PVFS_WAIT_CANCEL};
245 state of a pending retry
247 struct pvfs_odb_retry;
249 #define PVFS_EADB "posix:eadb"
250 #define PVFS_XATTR "posix:xattr"
251 #define PVFS_FAKE_OPLOCKS "posix:fakeoplocks"
252 #define PVFS_SHARE_DELAY "posix:sharedelay"
253 #define PVFS_OPLOCK_TIMEOUT "posix:oplocktimeout"
254 #define PVFS_ALLOCATION_ROUNDING "posix:allocationrounding"
255 #define PVFS_SEARCH_INACTIVITY "posix:searchinactivity"
256 #define PVFS_ACL "posix:acl"
257 #define PVFS_AIO "posix:aio"
259 #define PVFS_XATTR_DEFAULT true
260 #define PVFS_FAKE_OPLOCKS_DEFAULT false
261 #define PVFS_SHARE_DELAY_DEFAULT 1000000 /* nsecs */
262 #define PVFS_OPLOCK_TIMEOUT_DEFAULT 30 /* secs */
263 #define PVFS_ALLOCATION_ROUNDING_DEFAULT 512
264 #define PVFS_SEARCH_INACTIVITY_DEFAULT 300
266 struct pvfs_acl_ops {
268 NTSTATUS (*acl_load)(struct pvfs_state *, struct pvfs_filename *, int , TALLOC_CTX *,
269 struct security_descriptor **);
270 NTSTATUS (*acl_save)(struct pvfs_state *, struct pvfs_filename *, int , struct security_descriptor *);
273 #include "ntvfs/posix/vfs_posix_proto.h"
275 NTSTATUS pvfs_aio_pread(struct ntvfs_request *req, union smb_read *rd,
276 struct pvfs_file *f, uint32_t maxcnt);
277 NTSTATUS pvfs_aio_pwrite(struct ntvfs_request *req, union smb_write *wr,
278 struct pvfs_file *f);
280 #endif /* _VFS_POSIX_H_ */