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/security.h"
30 #include "lib/tdb/include/tdb.h"
32 #include "libcli/security/security.h"
33 #include "lib/events/events.h"
37 setup config options for a posix share
39 static void pvfs_setup_options(struct pvfs_state *pvfs)
41 struct share_config *scfg = pvfs->ntvfs->ctx->config;
44 if (share_bool_option(scfg, SHARE_MAP_HIDDEN, SHARE_MAP_HIDDEN_DEFAULT))
45 pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
46 if (share_bool_option(scfg, SHARE_MAP_ARCHIVE, SHARE_MAP_ARCHIVE_DEFAULT))
47 pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
48 if (share_bool_option(scfg, SHARE_MAP_SYSTEM, SHARE_MAP_SYSTEM_DEFAULT))
49 pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
50 if (share_bool_option(scfg, SHARE_READONLY, SHARE_READONLY_DEFAULT))
51 pvfs->flags |= PVFS_FLAG_READONLY;
52 if (share_bool_option(scfg, SHARE_STRICT_SYNC, SHARE_STRICT_SYNC_DEFAULT))
53 pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
54 if (share_bool_option(scfg, SHARE_STRICT_LOCKING, SHARE_STRICT_LOCKING_DEFAULT))
55 pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
56 if (share_bool_option(scfg, SHARE_CI_FILESYSTEM, SHARE_CI_FILESYSTEM_DEFAULT))
57 pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
58 if (share_bool_option(scfg, PVFS_FAKE_OPLOCKS, PVFS_FAKE_OPLOCKS_DEFAULT)) {
59 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
62 /* this must be a power of 2 */
63 pvfs->alloc_size_rounding = share_int_option(scfg,
64 PVFS_ALLOCATION_ROUNDING,
65 PVFS_ALLOCATION_ROUNDING_DEFAULT);
67 pvfs->search.inactivity_time = share_int_option(scfg,
68 PVFS_SEARCH_INACTIVITY,
69 PVFS_SEARCH_INACTIVITY_DEFAULT);
71 #if HAVE_XATTR_SUPPORT
72 if (share_bool_option(scfg, PVFS_XATTR, PVFS_XATTR_DEFAULT))
73 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
76 pvfs->sharing_violation_delay = share_int_option(scfg,
78 PVFS_SHARE_DELAY_DEFAULT);
80 pvfs->share_name = talloc_strdup(pvfs, scfg->name);
83 FS_ATTR_CASE_SENSITIVE_SEARCH |
84 FS_ATTR_CASE_PRESERVED_NAMES |
85 FS_ATTR_UNICODE_ON_DISK |
88 /* allow xattrs to be stored in a external tdb */
89 eadb = share_string_option(scfg, PVFS_EADB, NULL);
91 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
92 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
93 if (pvfs->ea_db != NULL) {
94 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
96 DEBUG(0,("Failed to open eadb '%s' - %s\n",
97 eadb, strerror(errno)));
98 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
102 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
103 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
105 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
106 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
109 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
110 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
112 /* check if the system really supports xattrs */
113 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
114 pvfs_xattr_probe(pvfs);
118 static int pvfs_state_destructor(struct pvfs_state *pvfs)
120 struct pvfs_file *f, *fn;
121 struct pvfs_search_state *s, *sn;
124 * make sure we cleanup files and searches before anything else
125 * because there destructors need to acess the pvfs_state struct
127 for (f=pvfs->files.list; f; f=fn) {
132 for (s=pvfs->search.list; s; s=sn) {
141 connect to a share - used when a tree_connect operation comes
142 in. For a disk based backend we needs to ensure that the base
143 directory exists (tho it doesn't need to be accessible by the user,
146 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
147 struct ntvfs_request *req, const char *sharename)
149 struct pvfs_state *pvfs;
151 char *base_directory;
154 pvfs = talloc_zero(ntvfs, struct pvfs_state);
155 NT_STATUS_HAVE_NO_MEMORY(pvfs);
157 /* for simplicity of path construction, remove any trailing slash now */
158 base_directory = talloc_strdup(pvfs, share_string_option(ntvfs->ctx->config, SHARE_PATH, ""));
159 NT_STATUS_HAVE_NO_MEMORY(base_directory);
160 if (strcmp(base_directory, "/") != 0) {
161 trim_string(base_directory, NULL, "/");
165 pvfs->base_directory = base_directory;
167 /* the directory must exist. Note that we deliberately don't
168 check that it is readable */
169 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
170 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
171 pvfs->base_directory, sharename));
172 return NT_STATUS_BAD_NETWORK_NAME;
175 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
176 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
178 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
179 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
181 ntvfs->private_data = pvfs;
183 pvfs->brl_context = brl_init(pvfs,
184 pvfs->ntvfs->ctx->server_id,
185 pvfs->ntvfs->ctx->msg_ctx);
186 if (pvfs->brl_context == NULL) {
187 return NT_STATUS_INTERNAL_DB_CORRUPTION;
190 pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
191 if (pvfs->odb_context == NULL) {
192 return NT_STATUS_INTERNAL_DB_CORRUPTION;
195 /* allow this to be NULL - we just disable change notify */
196 pvfs->notify_context = notify_init(pvfs,
197 pvfs->ntvfs->ctx->server_id,
198 pvfs->ntvfs->ctx->msg_ctx,
199 event_context_find(pvfs),
200 pvfs->ntvfs->ctx->config);
202 pvfs->sidmap = sidmap_open(pvfs);
203 if (pvfs->sidmap == NULL) {
204 return NT_STATUS_INTERNAL_DB_CORRUPTION;
207 /* allocate the search handle -> ptr tree */
208 pvfs->search.idtree = idr_init(pvfs);
209 NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
211 status = pvfs_mangle_init(pvfs);
212 NT_STATUS_NOT_OK_RETURN(status);
214 pvfs_setup_options(pvfs);
216 talloc_set_destructor(pvfs, pvfs_state_destructor);
219 /* who had the stupid idea to generate a signal on a large
220 file write instead of just failing it!? */
221 BlockSignals(True, SIGXFSZ);
228 disconnect from a share
230 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
236 check if a directory exists
238 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
239 struct ntvfs_request *req,
240 union smb_chkpath *cp)
242 struct pvfs_state *pvfs = ntvfs->private_data;
243 struct pvfs_filename *name;
246 /* resolve the cifs name to a posix name */
247 status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
248 NT_STATUS_NOT_OK_RETURN(status);
251 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
254 if (!S_ISDIR(name->st.st_mode)) {
255 return NT_STATUS_NOT_A_DIRECTORY;
264 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
265 struct ntvfs_request *req, struct smb_copy *cp)
267 DEBUG(0,("pvfs_copy not implemented\n"));
268 return NT_STATUS_NOT_SUPPORTED;
272 return print queue info
274 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
275 struct ntvfs_request *req, union smb_lpq *lpq)
277 return NT_STATUS_NOT_SUPPORTED;
280 /* SMBtrans - not used on file shares */
281 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
282 struct ntvfs_request *req, struct smb_trans2 *trans2)
284 return NT_STATUS_ACCESS_DENIED;
288 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
290 NTSTATUS ntvfs_posix_init(void)
293 struct ntvfs_ops ops;
294 NTVFS_CURRENT_CRITICAL_SIZES(vers);
298 ops.type = NTVFS_DISK;
300 /* fill in all the operations */
301 ops.connect = pvfs_connect;
302 ops.disconnect = pvfs_disconnect;
303 ops.unlink = pvfs_unlink;
304 ops.chkpath = pvfs_chkpath;
305 ops.qpathinfo = pvfs_qpathinfo;
306 ops.setpathinfo = pvfs_setpathinfo;
307 ops.open = pvfs_open;
308 ops.mkdir = pvfs_mkdir;
309 ops.rmdir = pvfs_rmdir;
310 ops.rename = pvfs_rename;
311 ops.copy = pvfs_copy;
312 ops.ioctl = pvfs_ioctl;
313 ops.read = pvfs_read;
314 ops.write = pvfs_write;
315 ops.seek = pvfs_seek;
316 ops.flush = pvfs_flush;
317 ops.close = pvfs_close;
318 ops.exit = pvfs_exit;
319 ops.lock = pvfs_lock;
320 ops.setfileinfo = pvfs_setfileinfo;
321 ops.qfileinfo = pvfs_qfileinfo;
322 ops.fsinfo = pvfs_fsinfo;
324 ops.search_first = pvfs_search_first;
325 ops.search_next = pvfs_search_next;
326 ops.search_close = pvfs_search_close;
327 ops.trans = pvfs_trans;
328 ops.logoff = pvfs_logoff;
329 ops.async_setup = pvfs_async_setup;
330 ops.cancel = pvfs_cancel;
331 ops.notify = pvfs_notify;
333 /* register ourselves with the NTVFS subsystem. We register
334 under the name 'default' as we wish to be the default
335 backend, and also register as 'posix' */
336 ops.name = "default";
337 ret = ntvfs_register(&ops, &vers);
339 if (!NT_STATUS_IS_OK(ret)) {
340 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
344 ret = ntvfs_register(&ops, &vers);
346 if (!NT_STATUS_IS_OK(ret)) {
347 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
350 if (NT_STATUS_IS_OK(ret)) {
351 ret = ntvfs_common_init();