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);
111 return NT_STATUS_NO_MEMORY;
114 /* for simplicity of path construction, remove any trailing slash now */
115 base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
116 trim_string(base_directory, NULL, "/");
119 pvfs->base_directory = base_directory;
121 /* the directory must exist. Note that we deliberately don't
122 check that it is readable */
123 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
124 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
125 pvfs->base_directory, sharename));
126 return NT_STATUS_BAD_NETWORK_NAME;
129 tcon->fs_type = talloc_strdup(tcon, "NTFS");
130 tcon->dev_type = talloc_strdup(tcon, "A:");
132 ntvfs->private_data = pvfs;
134 pvfs->brl_context = brl_init(pvfs,
135 pvfs->tcon->smb_conn->connection->server_id,
137 pvfs->tcon->smb_conn->connection->msg_ctx);
138 if (pvfs->brl_context == NULL) {
139 return NT_STATUS_INTERNAL_DB_CORRUPTION;
142 pvfs->odb_context = odb_init(pvfs,
143 pvfs->tcon->smb_conn->connection->server_id,
144 pvfs->tcon->smb_conn->connection->msg_ctx);
145 if (pvfs->odb_context == NULL) {
146 return NT_STATUS_INTERNAL_DB_CORRUPTION;
149 pvfs->sidmap = sidmap_open(pvfs);
150 if (pvfs->sidmap == NULL) {
151 return NT_STATUS_INTERNAL_DB_CORRUPTION;
154 /* allocate the fnum id -> ptr tree */
155 pvfs->idtree_fnum = idr_init(pvfs);
156 if (pvfs->idtree_fnum == NULL) {
157 return NT_STATUS_NO_MEMORY;
160 /* allocate the search handle -> ptr tree */
161 pvfs->idtree_search = idr_init(pvfs);
162 if (pvfs->idtree_search == NULL) {
163 return NT_STATUS_NO_MEMORY;
166 status = pvfs_mangle_init(pvfs);
167 if (!NT_STATUS_IS_OK(status)) {
171 pvfs_setup_options(pvfs);
174 /* who had the stupid idea to generate a signal on a large
175 file write instead of just failing it!? */
176 BlockSignals(True, SIGXFSZ);
183 disconnect from a share
185 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
186 struct smbsrv_tcon *tcon)
192 check if a directory exists
194 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
195 struct smbsrv_request *req, struct smb_chkpath *cp)
197 struct pvfs_state *pvfs = ntvfs->private_data;
198 struct pvfs_filename *name;
201 /* resolve the cifs name to a posix name */
202 status = pvfs_resolve_name(pvfs, req, cp->in.path, 0, &name);
203 if (!NT_STATUS_IS_OK(status)) {
208 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
211 if (!S_ISDIR(name->st.st_mode)) {
212 return NT_STATUS_NOT_A_DIRECTORY;
221 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
222 struct smbsrv_request *req, struct smb_copy *cp)
224 DEBUG(0,("pvfs_copy not implemented\n"));
225 return NT_STATUS_NOT_SUPPORTED;
229 return print queue info
231 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
232 struct smbsrv_request *req, union smb_lpq *lpq)
234 return NT_STATUS_NOT_SUPPORTED;
237 /* SMBtrans - not used on file shares */
238 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
239 struct smbsrv_request *req, struct smb_trans2 *trans2)
241 return NT_STATUS_ACCESS_DENIED;
245 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
247 NTSTATUS ntvfs_posix_init(void)
250 struct ntvfs_ops ops;
254 ops.type = NTVFS_DISK;
256 /* fill in all the operations */
257 ops.connect = pvfs_connect;
258 ops.disconnect = pvfs_disconnect;
259 ops.unlink = pvfs_unlink;
260 ops.chkpath = pvfs_chkpath;
261 ops.qpathinfo = pvfs_qpathinfo;
262 ops.setpathinfo = pvfs_setpathinfo;
263 ops.openfile = pvfs_open;
264 ops.mkdir = pvfs_mkdir;
265 ops.rmdir = pvfs_rmdir;
266 ops.rename = pvfs_rename;
267 ops.copy = pvfs_copy;
268 ops.ioctl = pvfs_ioctl;
269 ops.read = pvfs_read;
270 ops.write = pvfs_write;
271 ops.seek = pvfs_seek;
272 ops.flush = pvfs_flush;
273 ops.close = pvfs_close;
274 ops.exit = pvfs_exit;
275 ops.lock = pvfs_lock;
276 ops.setfileinfo = pvfs_setfileinfo;
277 ops.qfileinfo = pvfs_qfileinfo;
278 ops.fsinfo = pvfs_fsinfo;
280 ops.search_first = pvfs_search_first;
281 ops.search_next = pvfs_search_next;
282 ops.search_close = pvfs_search_close;
283 ops.trans = pvfs_trans;
284 ops.logoff = pvfs_logoff;
285 ops.async_setup = pvfs_async_setup;
286 ops.cancel = pvfs_cancel;
288 /* register ourselves with the NTVFS subsystem. We register
289 under the name 'default' as we wish to be the default
290 backend, and also register as 'posix' */
291 ops.name = "default";
292 ret = ntvfs_register(&ops);
295 ret = ntvfs_register(&ops);
297 if (!NT_STATUS_IS_OK(ret)) {
298 DEBUG(0,("Failed to register POSIX backend!\n"));