2 Unix SMB/CIFS implementation.
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.
23 this implements most of the POSIX NTVFS backend
24 This is the default backend
28 #include "vfs_posix.h"
29 #include "librpc/gen_ndr/ndr_security.h"
30 #include "smbd/service_stream.h"
31 #include "lib/tdb/include/tdb.h"
33 #include "libcli/security/proto.h"
37 setup config options for a posix share
39 static void pvfs_setup_options(struct pvfs_state *pvfs)
41 int snum = pvfs->tcon->service;
44 if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
45 if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
46 if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
47 if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
48 if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
49 if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
50 if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
52 if (lp_parm_bool(snum, "posix", "fakeoplocks", False)) {
53 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
56 /* this must be a power of 2 */
57 pvfs->alloc_size_rounding = lp_parm_int(snum,
58 "posix", "allocationrounding", 512);
60 pvfs->search_inactivity_time = lp_parm_int(snum,
61 "posix", "searchinactivity", 300);
63 #if HAVE_XATTR_SUPPORT
64 if (lp_parm_bool(snum, "posix", "xattr", True)) pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
67 pvfs->sharing_violation_delay = lp_parm_int(snum, "posix", "sharedelay", 1000000);
69 pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
72 FS_ATTR_CASE_SENSITIVE_SEARCH |
73 FS_ATTR_CASE_PRESERVED_NAMES |
74 FS_ATTR_UNICODE_ON_DISK |
77 /* allow xattrs to be stored in a external tdb */
78 eadb = lp_parm_string(snum, "posix", "eadb");
80 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
81 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
82 if (pvfs->ea_db != NULL) {
83 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
85 DEBUG(0,("Failed to open eadb '%s' - %s\n",
86 eadb, strerror(errno)));
87 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
91 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
92 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
94 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
95 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
98 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
99 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
101 /* check if the system really supports xattrs */
102 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
103 pvfs_xattr_probe(pvfs);
109 connect to a share - used when a tree_connect operation comes
110 in. For a disk based backend we needs to ensure that the base
111 directory exists (tho it doesn't need to be accessible by the user,
114 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
115 struct ntvfs_request *req, const char *sharename)
117 struct smbsrv_tcon *tcon = req->tcon;
118 struct pvfs_state *pvfs;
120 char *base_directory;
123 pvfs = talloc_zero(tcon, struct pvfs_state);
124 NT_STATUS_HAVE_NO_MEMORY(pvfs);
126 /* for simplicity of path construction, remove any trailing slash now */
127 base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
128 NT_STATUS_HAVE_NO_MEMORY(base_directory);
129 if (strcmp(base_directory, "/") != 0) {
130 trim_string(base_directory, NULL, "/");
134 pvfs->base_directory = base_directory;
136 /* the directory must exist. Note that we deliberately don't
137 check that it is readable */
138 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
139 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
140 pvfs->base_directory, sharename));
141 return NT_STATUS_BAD_NETWORK_NAME;
144 tcon->fs_type = talloc_strdup(tcon, "NTFS");
145 NT_STATUS_HAVE_NO_MEMORY(tcon->fs_type);
147 tcon->dev_type = talloc_strdup(tcon, "A:");
148 NT_STATUS_HAVE_NO_MEMORY(tcon->dev_type);
150 ntvfs->private_data = pvfs;
152 pvfs->brl_context = brl_init(pvfs,
153 pvfs->tcon->smb_conn->connection->server_id,
155 pvfs->tcon->smb_conn->connection->msg_ctx);
156 if (pvfs->brl_context == NULL) {
157 return NT_STATUS_INTERNAL_DB_CORRUPTION;
160 pvfs->odb_context = odb_init(pvfs,
161 pvfs->tcon->smb_conn->connection->server_id,
162 pvfs->tcon->smb_conn->connection->msg_ctx);
163 if (pvfs->odb_context == NULL) {
164 return NT_STATUS_INTERNAL_DB_CORRUPTION;
167 pvfs->sidmap = sidmap_open(pvfs);
168 if (pvfs->sidmap == NULL) {
169 return NT_STATUS_INTERNAL_DB_CORRUPTION;
172 /* allocate the fnum id -> ptr tree */
173 pvfs->idtree_fnum = idr_init(pvfs);
174 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_fnum);
176 /* allocate the search handle -> ptr tree */
177 pvfs->idtree_search = idr_init(pvfs);
178 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_search);
180 status = pvfs_mangle_init(pvfs);
181 NT_STATUS_NOT_OK_RETURN(status);
183 pvfs_setup_options(pvfs);
186 /* who had the stupid idea to generate a signal on a large
187 file write instead of just failing it!? */
188 BlockSignals(True, SIGXFSZ);
195 disconnect from a share
197 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
203 check if a directory exists
205 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
206 struct ntvfs_request *req, struct smb_chkpath *cp)
208 struct pvfs_state *pvfs = ntvfs->private_data;
209 struct pvfs_filename *name;
212 /* resolve the cifs name to a posix name */
213 status = pvfs_resolve_name(pvfs, req, cp->in.path, 0, &name);
214 NT_STATUS_NOT_OK_RETURN(status);
217 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
220 if (!S_ISDIR(name->st.st_mode)) {
221 return NT_STATUS_NOT_A_DIRECTORY;
230 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
231 struct ntvfs_request *req, struct smb_copy *cp)
233 DEBUG(0,("pvfs_copy not implemented\n"));
234 return NT_STATUS_NOT_SUPPORTED;
238 return print queue info
240 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
241 struct ntvfs_request *req, union smb_lpq *lpq)
243 return NT_STATUS_NOT_SUPPORTED;
246 /* SMBtrans - not used on file shares */
247 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
248 struct ntvfs_request *req, struct smb_trans2 *trans2)
250 return NT_STATUS_ACCESS_DENIED;
254 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
256 NTSTATUS ntvfs_posix_init(void)
259 struct ntvfs_ops ops;
263 ops.type = NTVFS_DISK;
265 /* fill in all the operations */
266 ops.connect = pvfs_connect;
267 ops.disconnect = pvfs_disconnect;
268 ops.unlink = pvfs_unlink;
269 ops.chkpath = pvfs_chkpath;
270 ops.qpathinfo = pvfs_qpathinfo;
271 ops.setpathinfo = pvfs_setpathinfo;
272 ops.open = pvfs_open;
273 ops.mkdir = pvfs_mkdir;
274 ops.rmdir = pvfs_rmdir;
275 ops.rename = pvfs_rename;
276 ops.copy = pvfs_copy;
277 ops.ioctl = pvfs_ioctl;
278 ops.read = pvfs_read;
279 ops.write = pvfs_write;
280 ops.seek = pvfs_seek;
281 ops.flush = pvfs_flush;
282 ops.close = pvfs_close;
283 ops.exit = pvfs_exit;
284 ops.lock = pvfs_lock;
285 ops.setfileinfo = pvfs_setfileinfo;
286 ops.qfileinfo = pvfs_qfileinfo;
287 ops.fsinfo = pvfs_fsinfo;
289 ops.search_first = pvfs_search_first;
290 ops.search_next = pvfs_search_next;
291 ops.search_close = pvfs_search_close;
292 ops.trans = pvfs_trans;
293 ops.logoff = pvfs_logoff;
294 ops.async_setup = pvfs_async_setup;
295 ops.cancel = pvfs_cancel;
297 /* register ourselves with the NTVFS subsystem. We register
298 under the name 'default' as we wish to be the default
299 backend, and also register as 'posix' */
300 ops.name = "default";
301 ret = ntvfs_register(&ops);
304 ret = ntvfs_register(&ops);
306 if (!NT_STATUS_IS_OK(ret)) {
307 DEBUG(0,("Failed to register POSIX backend!\n"));