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"
33 setup config options for a posix share
35 static void pvfs_setup_options(struct pvfs_state *pvfs)
37 int snum = pvfs->tcon->service;
40 if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
41 if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
42 if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
43 if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
44 if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
45 if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
46 if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
48 if (lp_parm_bool(snum, "posix", "fakeoplocks", False)) {
49 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
52 #if HAVE_XATTR_SUPPORT
53 if (lp_parm_bool(snum, "posix", "xattr", True)) pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
56 pvfs->sharing_violation_delay = lp_parm_int(snum, "posix", "sharedelay", 1000000);
58 pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
61 FS_ATTR_CASE_SENSITIVE_SEARCH |
62 FS_ATTR_CASE_PRESERVED_NAMES |
63 FS_ATTR_UNICODE_ON_DISK |
66 /* allow xattrs to be stored in a external tdb */
67 eadb = lp_parm_string(snum, "posix", "eadb");
69 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
70 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
71 if (pvfs->ea_db != NULL) {
72 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
74 DEBUG(0,("Failed to open eadb '%s' - %s\n",
75 eadb, strerror(errno)));
76 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
80 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
81 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
83 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
84 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
87 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
88 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
93 connect to a share - used when a tree_connect operation comes
94 in. For a disk based backend we needs to ensure that the base
95 directory exists (tho it doesn't need to be accessible by the user,
98 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
99 struct smbsrv_request *req, const char *sharename)
101 struct smbsrv_tcon *tcon = req->tcon;
102 struct pvfs_state *pvfs;
104 char *base_directory;
107 pvfs = talloc_zero_p(tcon, struct pvfs_state);
109 return NT_STATUS_NO_MEMORY;
112 /* for simplicity of path construction, remove any trailing slash now */
113 base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
114 trim_string(base_directory, NULL, "/");
117 pvfs->base_directory = base_directory;
119 /* the directory must exist. Note that we deliberately don't
120 check that it is readable */
121 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
122 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
123 pvfs->base_directory, sharename));
124 return NT_STATUS_BAD_NETWORK_NAME;
127 tcon->fs_type = talloc_strdup(tcon, "NTFS");
128 tcon->dev_type = talloc_strdup(tcon, "A:");
130 ntvfs->private_data = pvfs;
132 pvfs->brl_context = brl_init(pvfs,
133 pvfs->tcon->smb_conn->connection->connection.id,
135 pvfs->tcon->smb_conn->connection->messaging.ctx);
136 if (pvfs->brl_context == NULL) {
137 return NT_STATUS_INTERNAL_DB_CORRUPTION;
140 pvfs->odb_context = odb_init(pvfs,
141 pvfs->tcon->smb_conn->connection->connection.id,
142 pvfs->tcon->smb_conn->connection->messaging.ctx);
143 if (pvfs->odb_context == NULL) {
144 return NT_STATUS_INTERNAL_DB_CORRUPTION;
147 pvfs->sidmap = sidmap_open(pvfs);
148 if (pvfs->sidmap == NULL) {
149 return NT_STATUS_INTERNAL_DB_CORRUPTION;
152 /* allocate the fnum id -> ptr tree */
153 pvfs->idtree_fnum = idr_init(pvfs);
154 if (pvfs->idtree_fnum == NULL) {
155 return NT_STATUS_NO_MEMORY;
158 /* allocate the search handle -> ptr tree */
159 pvfs->idtree_search = idr_init(pvfs);
160 if (pvfs->idtree_search == NULL) {
161 return NT_STATUS_NO_MEMORY;
164 status = pvfs_mangle_init(pvfs);
165 if (!NT_STATUS_IS_OK(status)) {
169 pvfs_setup_options(pvfs);
172 /* who had the stupid idea to generate a signal on a large
173 file write instead of just failing it!? */
174 BlockSignals(True, SIGXFSZ);
181 disconnect from a share
183 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
184 struct smbsrv_tcon *tcon)
190 check if a directory exists
192 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
193 struct smbsrv_request *req, struct smb_chkpath *cp)
195 struct pvfs_state *pvfs = ntvfs->private_data;
196 struct pvfs_filename *name;
199 /* resolve the cifs name to a posix name */
200 status = pvfs_resolve_name(pvfs, req, cp->in.path, 0, &name);
201 if (!NT_STATUS_IS_OK(status)) {
206 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
209 if (!S_ISDIR(name->st.st_mode)) {
210 return NT_STATUS_NOT_A_DIRECTORY;
219 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
220 struct smbsrv_request *req, struct smb_copy *cp)
222 DEBUG(0,("pvfs_copy not implemented\n"));
223 return NT_STATUS_NOT_SUPPORTED;
227 return print queue info
229 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
230 struct smbsrv_request *req, union smb_lpq *lpq)
232 return NT_STATUS_NOT_SUPPORTED;
235 /* SMBtrans - not used on file shares */
236 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
237 struct smbsrv_request *req, struct smb_trans2 *trans2)
239 return NT_STATUS_ACCESS_DENIED;
243 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
245 NTSTATUS ntvfs_posix_init(void)
248 struct ntvfs_ops ops;
252 ops.type = NTVFS_DISK;
254 /* fill in all the operations */
255 ops.connect = pvfs_connect;
256 ops.disconnect = pvfs_disconnect;
257 ops.unlink = pvfs_unlink;
258 ops.chkpath = pvfs_chkpath;
259 ops.qpathinfo = pvfs_qpathinfo;
260 ops.setpathinfo = pvfs_setpathinfo;
261 ops.openfile = pvfs_open;
262 ops.mkdir = pvfs_mkdir;
263 ops.rmdir = pvfs_rmdir;
264 ops.rename = pvfs_rename;
265 ops.copy = pvfs_copy;
266 ops.ioctl = pvfs_ioctl;
267 ops.read = pvfs_read;
268 ops.write = pvfs_write;
269 ops.seek = pvfs_seek;
270 ops.flush = pvfs_flush;
271 ops.close = pvfs_close;
272 ops.exit = pvfs_exit;
273 ops.lock = pvfs_lock;
274 ops.setfileinfo = pvfs_setfileinfo;
275 ops.qfileinfo = pvfs_qfileinfo;
276 ops.fsinfo = pvfs_fsinfo;
278 ops.search_first = pvfs_search_first;
279 ops.search_next = pvfs_search_next;
280 ops.search_close = pvfs_search_close;
281 ops.trans = pvfs_trans;
282 ops.logoff = pvfs_logoff;
283 ops.async_setup = pvfs_async_setup;
284 ops.cancel = pvfs_cancel;
286 /* register ourselves with the NTVFS subsystem. We register
287 under the name 'default' as we wish to be the default
288 backend, and also register as 'posix' */
289 ops.name = "default";
290 ret = ntvfs_register(&ops);
293 ret = ntvfs_register(&ops);
295 if (!NT_STATUS_IS_OK(ret)) {
296 DEBUG(0,("Failed to register POSIX backend!\n"));