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"
31 /* this is the private structure for the posix vfs backend. It is used
32 to hold per-connection (per tree connect) state information */
34 struct ntvfs_module_context *ntvfs;
35 const char *base_directory;
36 struct GUID *base_fs_uuid;
38 const char *share_name;
41 struct pvfs_mangle_context *mangle_ctx;
43 struct brl_context *brl_context;
44 struct odb_context *odb_context;
45 struct notify_context *notify_context;
46 struct sidmap_context *sidmap;
48 /* a list of pending async requests. Needed to support
50 struct pvfs_wait *wait_list;
52 /* the sharing violation timeout */
53 uint_t sharing_violation_delay;
55 /* filesystem attributes (see FS_ATTR_*) */
58 /* if posix:eadb is set, then this gets setup */
59 struct tdb_wrap *ea_db;
61 /* the allocation size rounding */
62 uint32_t alloc_size_rounding;
65 /* the open files as DLINKLIST */
66 struct pvfs_file *list;
70 /* an id tree mapping open search ID to a pvfs_search_state structure */
71 struct idr_context *idtree;
73 /* the open searches as DLINKLIST */
74 struct pvfs_search_state *list;
76 /* how long to keep inactive searches around for */
77 uint_t inactivity_time;
80 /* used to accelerate acl mapping */
82 const struct dom_sid *creator_owner;
83 const struct dom_sid *creator_group;
87 const struct pvfs_acl_ops *acl_ops;
89 /* non-flag share options */
92 mode_t force_dir_mode;
94 mode_t force_create_mode;
98 /* this is the basic information needed about a file from the filesystem */
99 struct pvfs_dos_fileinfo {
113 this is the structure returned by pvfs_resolve_name(). It holds the posix details of
114 a filename passed by the client to any function
116 struct pvfs_filename {
117 const char *original_name;
119 const char *stream_name; /* does not include :$DATA suffix */
120 uint32_t stream_id; /* this uses a hash, so is probabilistic */
122 BOOL exists; /* true if the base filename exists */
123 BOOL stream_exists; /* true if the stream exists */
125 struct pvfs_dos_fileinfo dos;
129 /* open file handle state - encapsulates the posix fd
131 Note that this is separated from the pvfs_file structure in order
132 to cope with the openx DENY_DOS semantics where a 2nd DENY_DOS open
133 on the same connection gets the same low level filesystem handle,
134 rather than a new handle
136 struct pvfs_file_handle {
139 struct pvfs_filename *name;
141 /* a unique file key to be used for open file locking */
142 DATA_BLOB odb_locking_key;
144 uint32_t create_options;
146 /* this is set by the mode_information level. What does it do? */
149 /* yes, we need 2 independent positions ... */
150 uint64_t seek_offset;
153 BOOL have_opendb_entry;
155 /* we need this hook back to our parent for lock destruction */
156 struct pvfs_state *pvfs;
158 /* have we set a sticky write time that we should remove on close */
159 BOOL sticky_write_time;
161 /* the open went through to completion */
165 /* open file state */
167 struct pvfs_file *next, *prev;
168 struct pvfs_file_handle *handle;
169 struct ntvfs_handle *ntvfs;
171 struct pvfs_state *pvfs;
173 uint32_t impersonation;
174 uint32_t share_access;
175 uint32_t access_mask;
177 /* a list of pending locks - used for locking cancel operations */
178 struct pvfs_pending_lock *pending_list;
180 /* a file handle to be used for byte range locking */
181 struct brl_handle *brl_handle;
183 /* a count of active locks - used to avoid calling brl_close on
187 /* for directories, a buffer of pending notify events */
188 struct pvfs_notify_buffer *notify_buffer;
190 /* for directories, the state of an incomplete SMB2 Find */
191 struct pvfs_search_state *search;
194 /* the state of a search started with pvfs_search_first() */
195 struct pvfs_search_state {
196 struct pvfs_search_state *prev, *next;
197 struct pvfs_state *pvfs;
200 uint16_t search_attrib;
201 uint16_t must_attrib;
202 struct pvfs_dir *dir;
205 struct ea_name *ea_names;
206 struct timed_event *te;
209 /* flags to pvfs_resolve_name() */
210 #define PVFS_RESOLVE_WILDCARD (1<<0)
211 #define PVFS_RESOLVE_STREAMS (1<<1)
213 /* flags in pvfs->flags */
214 #define PVFS_FLAG_CI_FILESYSTEM (1<<0) /* the filesystem is case insensitive */
215 #define PVFS_FLAG_MAP_ARCHIVE (1<<1)
216 #define PVFS_FLAG_MAP_SYSTEM (1<<2)
217 #define PVFS_FLAG_MAP_HIDDEN (1<<3)
218 #define PVFS_FLAG_READONLY (1<<4)
219 #define PVFS_FLAG_STRICT_SYNC (1<<5)
220 #define PVFS_FLAG_STRICT_LOCKING (1<<6)
221 #define PVFS_FLAG_XATTR_ENABLE (1<<7)
222 #define PVFS_FLAG_FAKE_OPLOCKS (1<<8)
223 #define PVFS_FLAG_LINUX_AIO (1<<9)
225 /* forward declare some anonymous structures */
228 /* types of notification for pvfs wait events */
229 enum pvfs_wait_notice {PVFS_WAIT_EVENT, PVFS_WAIT_TIMEOUT, PVFS_WAIT_CANCEL};
231 #define PVFS_EADB "posix:eadb"
232 #define PVFS_XATTR "posix:xattr"
233 #define PVFS_FAKE_OPLOCKS "posix:fakeoplocks"
234 #define PVFS_SHARE_DELAY "posix:sharedelay"
235 #define PVFS_ALLOCATION_ROUNDING "posix:allocationrounding"
236 #define PVFS_SEARCH_INACTIVITY "posix:searchinactivity"
237 #define PVFS_ACL "posix:acl"
238 #define PVFS_AIO "posix:aio"
240 #define PVFS_XATTR_DEFAULT True
241 #define PVFS_FAKE_OPLOCKS_DEFAULT False
242 #define PVFS_SHARE_DELAY_DEFAULT 1000000
243 #define PVFS_ALLOCATION_ROUNDING_DEFAULT 512
244 #define PVFS_SEARCH_INACTIVITY_DEFAULT 300
246 struct pvfs_acl_ops {
248 NTSTATUS (*acl_load)(struct pvfs_state *, struct pvfs_filename *, int , TALLOC_CTX *,
249 struct security_descriptor **);
250 NTSTATUS (*acl_save)(struct pvfs_state *, struct pvfs_filename *, int , struct security_descriptor *);
253 #include "ntvfs/posix/vfs_posix_proto.h"
255 NTSTATUS pvfs_aio_pread(struct ntvfs_request *req, union smb_read *rd,
256 struct pvfs_file *f, uint32_t maxcnt);
257 NTSTATUS pvfs_aio_pwrite(struct ntvfs_request *req, union smb_write *wr,
258 struct pvfs_file *f);
260 #endif /* _VFS_POSIX_H_ */