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);
95 connect to a share - used when a tree_connect operation comes
96 in. For a disk based backend we needs to ensure that the base
97 directory exists (tho it doesn't need to be accessible by the user,
100 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
101 struct smbsrv_request *req, const char *sharename)
103 struct smbsrv_tcon *tcon = req->tcon;
104 struct pvfs_state *pvfs;
106 char *base_directory;
109 pvfs = talloc_zero(tcon, struct pvfs_state);
110 NT_STATUS_HAVE_NO_MEMORY(pvfs);
112 /* for simplicity of path construction, remove any trailing slash now */
113 base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
114 NT_STATUS_HAVE_NO_MEMORY(base_directory);
115 trim_string(base_directory, NULL, "/");
118 pvfs->base_directory = base_directory;
120 /* the directory must exist. Note that we deliberately don't
121 check that it is readable */
122 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
123 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
124 pvfs->base_directory, sharename));
125 return NT_STATUS_BAD_NETWORK_NAME;
128 tcon->fs_type = talloc_strdup(tcon, "NTFS");
129 NT_STATUS_HAVE_NO_MEMORY(tcon->fs_type);
131 tcon->dev_type = talloc_strdup(tcon, "A:");
132 NT_STATUS_HAVE_NO_MEMORY(tcon->dev_type);
134 ntvfs->private_data = pvfs;
136 pvfs->brl_context = brl_init(pvfs,
137 pvfs->tcon->smb_conn->connection->server_id,
139 pvfs->tcon->smb_conn->connection->msg_ctx);
140 if (pvfs->brl_context == NULL) {
141 return NT_STATUS_INTERNAL_DB_CORRUPTION;
144 pvfs->odb_context = odb_init(pvfs,
145 pvfs->tcon->smb_conn->connection->server_id,
146 pvfs->tcon->smb_conn->connection->msg_ctx);
147 if (pvfs->odb_context == NULL) {
148 return NT_STATUS_INTERNAL_DB_CORRUPTION;
151 pvfs->sidmap = sidmap_open(pvfs);
152 if (pvfs->sidmap == NULL) {
153 return NT_STATUS_INTERNAL_DB_CORRUPTION;
156 /* allocate the fnum id -> ptr tree */
157 pvfs->idtree_fnum = idr_init(pvfs);
158 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_fnum);
160 /* allocate the search handle -> ptr tree */
161 pvfs->idtree_search = idr_init(pvfs);
162 NT_STATUS_HAVE_NO_MEMORY(pvfs->idtree_search);
164 status = pvfs_mangle_init(pvfs);
165 NT_STATUS_NOT_OK_RETURN(status);
167 pvfs_setup_options(pvfs);
170 /* who had the stupid idea to generate a signal on a large
171 file write instead of just failing it!? */
172 BlockSignals(True, SIGXFSZ);
179 disconnect from a share
181 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
182 struct smbsrv_tcon *tcon)
188 check if a directory exists
190 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
191 struct smbsrv_request *req, struct smb_chkpath *cp)
193 struct pvfs_state *pvfs = ntvfs->private_data;
194 struct pvfs_filename *name;
197 /* resolve the cifs name to a posix name */
198 status = pvfs_resolve_name(pvfs, req, cp->in.path, 0, &name);
199 NT_STATUS_NOT_OK_RETURN(status);
202 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
205 if (!S_ISDIR(name->st.st_mode)) {
206 return NT_STATUS_NOT_A_DIRECTORY;
215 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
216 struct smbsrv_request *req, struct smb_copy *cp)
218 DEBUG(0,("pvfs_copy not implemented\n"));
219 return NT_STATUS_NOT_SUPPORTED;
223 return print queue info
225 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
226 struct smbsrv_request *req, union smb_lpq *lpq)
228 return NT_STATUS_NOT_SUPPORTED;
231 /* SMBtrans - not used on file shares */
232 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
233 struct smbsrv_request *req, struct smb_trans2 *trans2)
235 return NT_STATUS_ACCESS_DENIED;
239 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
241 NTSTATUS ntvfs_posix_init(void)
244 struct ntvfs_ops ops;
248 ops.type = NTVFS_DISK;
250 /* fill in all the operations */
251 ops.connect = pvfs_connect;
252 ops.disconnect = pvfs_disconnect;
253 ops.unlink = pvfs_unlink;
254 ops.chkpath = pvfs_chkpath;
255 ops.qpathinfo = pvfs_qpathinfo;
256 ops.setpathinfo = pvfs_setpathinfo;
257 ops.openfile = pvfs_open;
258 ops.mkdir = pvfs_mkdir;
259 ops.rmdir = pvfs_rmdir;
260 ops.rename = pvfs_rename;
261 ops.copy = pvfs_copy;
262 ops.ioctl = pvfs_ioctl;
263 ops.read = pvfs_read;
264 ops.write = pvfs_write;
265 ops.seek = pvfs_seek;
266 ops.flush = pvfs_flush;
267 ops.close = pvfs_close;
268 ops.exit = pvfs_exit;
269 ops.lock = pvfs_lock;
270 ops.setfileinfo = pvfs_setfileinfo;
271 ops.qfileinfo = pvfs_qfileinfo;
272 ops.fsinfo = pvfs_fsinfo;
274 ops.search_first = pvfs_search_first;
275 ops.search_next = pvfs_search_next;
276 ops.search_close = pvfs_search_close;
277 ops.trans = pvfs_trans;
278 ops.logoff = pvfs_logoff;
279 ops.async_setup = pvfs_async_setup;
280 ops.cancel = pvfs_cancel;
282 /* register ourselves with the NTVFS subsystem. We register
283 under the name 'default' as we wish to be the default
284 backend, and also register as 'posix' */
285 ops.name = "default";
286 ret = ntvfs_register(&ops);
289 ret = ntvfs_register(&ops);
291 if (!NT_STATUS_IS_OK(ret)) {
292 DEBUG(0,("Failed to register POSIX backend!\n"));