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 "librpc/gen_ndr/xattr.h"
27 #include "system/filesys.h"
28 #include "ntvfs/ntvfs.h"
29 #include "ntvfs/common/proto.h"
30 #include "dsdb/samdb/samdb.h"
32 /* this is the private structure for the posix vfs backend. It is used
33 to hold per-connection (per tree connect) state information */
35 struct ntvfs_module_context *ntvfs;
36 const char *base_directory;
37 struct GUID *base_fs_uuid;
39 const char *share_name;
42 struct pvfs_mangle_context *mangle_ctx;
44 struct brl_context *brl_context;
45 struct odb_context *odb_context;
46 struct notify_context *notify_context;
47 struct sidmap_context *sidmap;
49 /* a list of pending async requests. Needed to support
51 struct pvfs_wait *wait_list;
53 /* the sharing violation timeout */
54 uint_t sharing_violation_delay;
56 /* filesystem attributes (see FS_ATTR_*) */
59 /* if posix:eadb is set, then this gets setup */
60 struct tdb_wrap *ea_db;
62 /* the allocation size rounding */
63 uint32_t alloc_size_rounding;
66 /* the open files as DLINKLIST */
67 struct pvfs_file *list;
71 /* an id tree mapping open search ID to a pvfs_search_state structure */
72 struct idr_context *idtree;
74 /* the open searches as DLINKLIST */
75 struct pvfs_search_state *list;
77 /* how long to keep inactive searches around for */
78 uint_t inactivity_time;
81 /* used to accelerate acl mapping */
83 const struct dom_sid *creator_owner;
84 const struct dom_sid *creator_group;
88 const struct pvfs_acl_ops *acl_ops;
91 /* this is the basic information needed about a file from the filesystem */
92 struct pvfs_dos_fileinfo {
106 this is the structure returned by pvfs_resolve_name(). It holds the posix details of
107 a filename passed by the client to any function
109 struct pvfs_filename {
110 const char *original_name;
112 const char *stream_name; /* does not include :$DATA suffix */
113 uint32_t stream_id; /* this uses a hash, so is probabilistic */
115 BOOL exists; /* true if the base filename exists */
116 BOOL stream_exists; /* true if the stream exists */
118 struct pvfs_dos_fileinfo dos;
122 /* open file handle state - encapsulates the posix fd
124 Note that this is separated from the pvfs_file structure in order
125 to cope with the openx DENY_DOS semantics where a 2nd DENY_DOS open
126 on the same connection gets the same low level filesystem handle,
127 rather than a new handle
129 struct pvfs_file_handle {
132 struct pvfs_filename *name;
134 /* a unique file key to be used for open file locking */
135 DATA_BLOB odb_locking_key;
137 uint32_t create_options;
139 /* this is set by the mode_information level. What does it do? */
142 /* yes, we need 2 independent positions ... */
143 uint64_t seek_offset;
146 BOOL have_opendb_entry;
148 /* we need this hook back to our parent for lock destruction */
149 struct pvfs_state *pvfs;
151 /* have we set a sticky write time that we should remove on close */
152 BOOL sticky_write_time;
155 /* open file state */
157 struct pvfs_file *next, *prev;
158 struct pvfs_file_handle *handle;
159 struct ntvfs_handle *ntvfs;
161 struct pvfs_state *pvfs;
163 uint32_t impersonation;
164 uint32_t share_access;
165 uint32_t access_mask;
167 /* a list of pending locks - used for locking cancel operations */
168 struct pvfs_pending_lock *pending_list;
170 /* a file handle to be used for byte range locking */
171 struct brl_handle *brl_handle;
173 /* a count of active locks - used to avoid calling brl_close on
177 /* for directories, a buffer of pending notify events */
178 struct pvfs_notify_buffer *notify_buffer;
180 /* for directories, the state of an incomplete SMB2 Find */
181 struct pvfs_search_state *search;
184 /* the state of a search started with pvfs_search_first() */
185 struct pvfs_search_state {
186 struct pvfs_search_state *prev, *next;
187 struct pvfs_state *pvfs;
190 uint16_t search_attrib;
191 uint16_t must_attrib;
192 struct pvfs_dir *dir;
195 struct ea_name *ea_names;
196 struct timed_event *te;
199 /* flags to pvfs_resolve_name() */
200 #define PVFS_RESOLVE_WILDCARD (1<<0)
201 #define PVFS_RESOLVE_STREAMS (1<<1)
203 /* flags in pvfs->flags */
204 #define PVFS_FLAG_CI_FILESYSTEM (1<<0) /* the filesystem is case insensitive */
205 #define PVFS_FLAG_MAP_ARCHIVE (1<<1)
206 #define PVFS_FLAG_MAP_SYSTEM (1<<2)
207 #define PVFS_FLAG_MAP_HIDDEN (1<<3)
208 #define PVFS_FLAG_READONLY (1<<4)
209 #define PVFS_FLAG_STRICT_SYNC (1<<5)
210 #define PVFS_FLAG_STRICT_LOCKING (1<<6)
211 #define PVFS_FLAG_XATTR_ENABLE (1<<7)
212 #define PVFS_FLAG_FAKE_OPLOCKS (1<<8)
213 #define PVFS_FLAG_LINUX_AIO (1<<9)
215 /* forward declare some anonymous structures */
218 /* types of notification for pvfs wait events */
219 enum pvfs_wait_notice {PVFS_WAIT_EVENT, PVFS_WAIT_TIMEOUT, PVFS_WAIT_CANCEL};
221 #define PVFS_EADB "posix:eadb"
222 #define PVFS_XATTR "posix:xattr"
223 #define PVFS_FAKE_OPLOCKS "posix:fakeoplocks"
224 #define PVFS_SHARE_DELAY "posix:sharedelay"
225 #define PVFS_ALLOCATION_ROUNDING "posix:allocationrounding"
226 #define PVFS_SEARCH_INACTIVITY "posix:searchinactivity"
227 #define PVFS_ACL "posix:acl"
228 #define PVFS_AIO "posix:aio"
230 #define PVFS_XATTR_DEFAULT True
231 #define PVFS_FAKE_OPLOCKS_DEFAULT False
232 #define PVFS_SHARE_DELAY_DEFAULT 1000000
233 #define PVFS_ALLOCATION_ROUNDING_DEFAULT 512
234 #define PVFS_SEARCH_INACTIVITY_DEFAULT 300
236 struct pvfs_acl_ops {
238 NTSTATUS (*acl_load)(struct pvfs_state *, struct pvfs_filename *, int , TALLOC_CTX *,
239 struct security_descriptor **);
240 NTSTATUS (*acl_save)(struct pvfs_state *, struct pvfs_filename *, int , struct security_descriptor *);
243 #include "ntvfs/posix/vfs_posix_proto.h"
245 NTSTATUS pvfs_aio_pread(struct ntvfs_request *req, union smb_read *rd,
246 struct pvfs_file *f, uint32_t maxcnt);
247 NTSTATUS pvfs_aio_pwrite(struct ntvfs_request *req, union smb_write *wr,
248 struct pvfs_file *f);
250 #endif /* _VFS_POSIX_H_ */