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"
35 setup config options for a posix share
37 static void pvfs_setup_options(struct pvfs_state *pvfs)
39 int snum = pvfs->tcon->service;
42 if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
43 if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
44 if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
45 if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
46 if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
47 if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
48 if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
50 if (lp_parm_bool(snum, "posix", "fakeoplocks", False)) {
51 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
54 #if HAVE_XATTR_SUPPORT
55 if (lp_parm_bool(snum, "posix", "xattr", True)) pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
58 pvfs->sharing_violation_delay = lp_parm_int(snum, "posix", "sharedelay", 1000000);
60 pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
63 FS_ATTR_CASE_SENSITIVE_SEARCH |
64 FS_ATTR_CASE_PRESERVED_NAMES |
65 FS_ATTR_UNICODE_ON_DISK |
68 /* allow xattrs to be stored in a external tdb */
69 eadb = lp_parm_string(snum, "posix", "eadb");
71 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
72 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
73 if (pvfs->ea_db != NULL) {
74 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
76 DEBUG(0,("Failed to open eadb '%s' - %s\n",
77 eadb, strerror(errno)));
78 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
82 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
83 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
85 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
86 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
89 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
90 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
92 pvfs->blkid_cache = NULL;
95 /* check if the system really supports xattrs */
96 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
97 pvfs_xattr_probe(pvfs);
103 connect to a share - used when a tree_connect operation comes
104 in. For a disk based backend we needs to ensure that the base
105 directory exists (tho it doesn't need to be accessible by the user,
108 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
109 struct smbsrv_request *req, const char *sharename)
111 struct smbsrv_tcon *tcon = req->tcon;
112 struct pvfs_state *pvfs;
114 char *base_directory;
117 pvfs = talloc_zero(tcon, struct pvfs_state);
118 NT_STATUS_HAVE_NO_MEMORY(pvfs);
120 /* for simplicity of path construction, remove any trailing slash now */
121 base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
122 NT_STATUS_HAVE_NO_MEMORY(base_directory);
123 trim_string(base_directory, NULL, "/");
126 pvfs->base_directory = base_directory;
128 /* the directory must exist. Note that we deliberately don't
129 check that it is readable */
130 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
131 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
132 pvfs->base_directory, sharename));
133 return NT_STATUS_BAD_NETWORK_NAME;
136 tcon->fs_type = talloc_strdup(tcon, "NTFS");
137 NT_STATUS_HAVE_NO_MEMORY(tcon->fs_type);
139 tcon->dev_type = talloc_strdup(tcon, "A:");
140 NT_STATUS_HAVE_NO_MEMORY(tcon->dev_type);
142 ntvfs->private_data = pvfs;
144 pvfs->brl_context = brl_init(pvfs,
145 pvfs->tcon->smb_conn->connection->server_id,
147 pvfs->tcon->smb_conn->connection->msg_ctx);
148 if (pvfs->brl_context == NULL) {
149 return NT_STATUS_INTERNAL_DB_CORRUPTION;
152 pvfs->odb_context = odb_init(pvfs,
153 pvfs->tcon->smb_conn->connection->server_id,
154 pvfs->tcon->smb_conn->connection->msg_ctx);
155 if (pvfs->odb_context == NULL) {
156 return NT_STATUS_INTERNAL_DB_CORRUPTION;
159 pvfs->sidmap = sidmap_open(pvfs);
160 if (pvfs->sidmap == NULL) {
161 return NT_STATUS_INTERNAL_DB_CORRUPTION;
164 /* allocate the fnum id -> ptr tree */
165 pvfs->idtree_fnum = idr_init(pvfs);
166 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_fnum);
168 /* allocate the search handle -> ptr tree */
169 pvfs->idtree_search = idr_init(pvfs);
170 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_search);
172 status = pvfs_mangle_init(pvfs);
173 NT_STATUS_NOT_OK_RETURN(status);
175 pvfs_setup_options(pvfs);
178 /* who had the stupid idea to generate a signal on a large
179 file write instead of just failing it!? */
180 BlockSignals(True, SIGXFSZ);
187 disconnect from a share
189 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
190 struct smbsrv_tcon *tcon)
196 check if a directory exists
198 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
199 struct smbsrv_request *req, struct smb_chkpath *cp)
201 struct pvfs_state *pvfs = ntvfs->private_data;
202 struct pvfs_filename *name;
205 /* resolve the cifs name to a posix name */
206 status = pvfs_resolve_name(pvfs, req, cp->in.path, 0, &name);
207 NT_STATUS_NOT_OK_RETURN(status);
210 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
213 if (!S_ISDIR(name->st.st_mode)) {
214 return NT_STATUS_NOT_A_DIRECTORY;
223 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
224 struct smbsrv_request *req, struct smb_copy *cp)
226 DEBUG(0,("pvfs_copy not implemented\n"));
227 return NT_STATUS_NOT_SUPPORTED;
231 return print queue info
233 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
234 struct smbsrv_request *req, union smb_lpq *lpq)
236 return NT_STATUS_NOT_SUPPORTED;
239 /* SMBtrans - not used on file shares */
240 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
241 struct smbsrv_request *req, struct smb_trans2 *trans2)
243 return NT_STATUS_ACCESS_DENIED;
247 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
249 NTSTATUS ntvfs_posix_init(void)
252 struct ntvfs_ops ops;
256 ops.type = NTVFS_DISK;
258 /* fill in all the operations */
259 ops.connect = pvfs_connect;
260 ops.disconnect = pvfs_disconnect;
261 ops.unlink = pvfs_unlink;
262 ops.chkpath = pvfs_chkpath;
263 ops.qpathinfo = pvfs_qpathinfo;
264 ops.setpathinfo = pvfs_setpathinfo;
265 ops.openfile = pvfs_open;
266 ops.mkdir = pvfs_mkdir;
267 ops.rmdir = pvfs_rmdir;
268 ops.rename = pvfs_rename;
269 ops.copy = pvfs_copy;
270 ops.ioctl = pvfs_ioctl;
271 ops.read = pvfs_read;
272 ops.write = pvfs_write;
273 ops.seek = pvfs_seek;
274 ops.flush = pvfs_flush;
275 ops.close = pvfs_close;
276 ops.exit = pvfs_exit;
277 ops.lock = pvfs_lock;
278 ops.setfileinfo = pvfs_setfileinfo;
279 ops.qfileinfo = pvfs_qfileinfo;
280 ops.fsinfo = pvfs_fsinfo;
282 ops.search_first = pvfs_search_first;
283 ops.search_next = pvfs_search_next;
284 ops.search_close = pvfs_search_close;
285 ops.trans = pvfs_trans;
286 ops.logoff = pvfs_logoff;
287 ops.async_setup = pvfs_async_setup;
288 ops.cancel = pvfs_cancel;
290 /* register ourselves with the NTVFS subsystem. We register
291 under the name 'default' as we wish to be the default
292 backend, and also register as 'posix' */
293 ops.name = "default";
294 ret = ntvfs_register(&ops);
297 ret = ntvfs_register(&ops);
299 if (!NT_STATUS_IS_OK(ret)) {
300 DEBUG(0,("Failed to register POSIX backend!\n"));