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 int snum = pvfs->ntvfs->ctx->config.snum;
44 if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
45 if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
46 if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
47 if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
48 if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
49 if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
50 if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
52 if (lp_parm_bool(snum, "posix", "fakeoplocks", False)) {
53 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
56 /* this must be a power of 2 */
57 pvfs->alloc_size_rounding = lp_parm_int(snum,
58 "posix", "allocationrounding", 512);
60 pvfs->search.inactivity_time = lp_parm_int(snum,
61 "posix", "searchinactivity", 300);
63 #if HAVE_XATTR_SUPPORT
64 if (lp_parm_bool(snum, "posix", "xattr", True)) pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
67 pvfs->sharing_violation_delay = lp_parm_int(snum, "posix", "sharedelay", 1000000);
69 pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
72 FS_ATTR_CASE_SENSITIVE_SEARCH |
73 FS_ATTR_CASE_PRESERVED_NAMES |
74 FS_ATTR_UNICODE_ON_DISK |
77 /* allow xattrs to be stored in a external tdb */
78 eadb = lp_parm_string(snum, "posix", "eadb");
80 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
81 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
82 if (pvfs->ea_db != NULL) {
83 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
85 DEBUG(0,("Failed to open eadb '%s' - %s\n",
86 eadb, strerror(errno)));
87 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
91 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
92 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
94 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
95 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
98 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
99 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
101 /* check if the system really supports xattrs */
102 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
103 pvfs_xattr_probe(pvfs);
107 static int pvfs_state_destructor(void *ptr)
109 struct pvfs_state *pvfs = talloc_get_type(ptr, struct pvfs_state);
110 struct pvfs_file *f, *fn;
111 struct pvfs_search_state *s, *sn;
114 * make sure we cleanup files and searches before anything else
115 * because there destructors need to acess the pvfs_state struct
117 for (f=pvfs->files.list; f; f=fn) {
122 for (s=pvfs->search.list; s; s=sn) {
131 connect to a share - used when a tree_connect operation comes
132 in. For a disk based backend we needs to ensure that the base
133 directory exists (tho it doesn't need to be accessible by the user,
136 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
137 struct ntvfs_request *req, const char *sharename)
139 struct pvfs_state *pvfs;
141 char *base_directory;
144 pvfs = talloc_zero(ntvfs, struct pvfs_state);
145 NT_STATUS_HAVE_NO_MEMORY(pvfs);
147 /* for simplicity of path construction, remove any trailing slash now */
148 base_directory = talloc_strdup(pvfs, lp_pathname(ntvfs->ctx->config.snum));
149 NT_STATUS_HAVE_NO_MEMORY(base_directory);
150 if (strcmp(base_directory, "/") != 0) {
151 trim_string(base_directory, NULL, "/");
155 pvfs->base_directory = base_directory;
157 /* the directory must exist. Note that we deliberately don't
158 check that it is readable */
159 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
160 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
161 pvfs->base_directory, sharename));
162 return NT_STATUS_BAD_NETWORK_NAME;
165 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
166 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
168 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
169 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
171 ntvfs->private_data = pvfs;
173 pvfs->brl_context = brl_init(pvfs,
174 pvfs->ntvfs->ctx->server_id,
175 pvfs->ntvfs->ctx->config.snum,
176 pvfs->ntvfs->ctx->msg_ctx);
177 if (pvfs->brl_context == NULL) {
178 return NT_STATUS_INTERNAL_DB_CORRUPTION;
181 pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
182 if (pvfs->odb_context == NULL) {
183 return NT_STATUS_INTERNAL_DB_CORRUPTION;
186 /* allow this to be NULL - we just disable change notify */
187 pvfs->notify_context = notify_init(pvfs,
188 pvfs->ntvfs->ctx->server_id,
189 pvfs->ntvfs->ctx->msg_ctx,
190 event_context_find(pvfs),
191 pvfs->ntvfs->ctx->config.snum);
193 pvfs->sidmap = sidmap_open(pvfs);
194 if (pvfs->sidmap == NULL) {
195 return NT_STATUS_INTERNAL_DB_CORRUPTION;
198 /* allocate the fnum id -> ptr tree */
199 pvfs->files.idtree = idr_init(pvfs);
200 NT_STATUS_HAVE_NO_MEMORY(pvfs->files.idtree);
202 /* allocate the search handle -> ptr tree */
203 pvfs->search.idtree = idr_init(pvfs);
204 NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
206 status = pvfs_mangle_init(pvfs);
207 NT_STATUS_NOT_OK_RETURN(status);
209 pvfs_setup_options(pvfs);
211 talloc_set_destructor(pvfs, pvfs_state_destructor);
214 /* who had the stupid idea to generate a signal on a large
215 file write instead of just failing it!? */
216 BlockSignals(True, SIGXFSZ);
223 disconnect from a share
225 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
231 check if a directory exists
233 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
234 struct ntvfs_request *req,
235 union smb_chkpath *cp)
237 struct pvfs_state *pvfs = ntvfs->private_data;
238 struct pvfs_filename *name;
241 /* resolve the cifs name to a posix name */
242 status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
243 NT_STATUS_NOT_OK_RETURN(status);
246 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
249 if (!S_ISDIR(name->st.st_mode)) {
250 return NT_STATUS_NOT_A_DIRECTORY;
259 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
260 struct ntvfs_request *req, struct smb_copy *cp)
262 DEBUG(0,("pvfs_copy not implemented\n"));
263 return NT_STATUS_NOT_SUPPORTED;
267 return print queue info
269 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
270 struct ntvfs_request *req, union smb_lpq *lpq)
272 return NT_STATUS_NOT_SUPPORTED;
275 /* SMBtrans - not used on file shares */
276 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
277 struct ntvfs_request *req, struct smb_trans2 *trans2)
279 return NT_STATUS_ACCESS_DENIED;
283 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
285 NTSTATUS ntvfs_posix_init(void)
288 struct ntvfs_ops ops;
289 NTVFS_CURRENT_CRITICAL_SIZES(vers);
293 ops.type = NTVFS_DISK;
295 /* fill in all the operations */
296 ops.connect = pvfs_connect;
297 ops.disconnect = pvfs_disconnect;
298 ops.unlink = pvfs_unlink;
299 ops.chkpath = pvfs_chkpath;
300 ops.qpathinfo = pvfs_qpathinfo;
301 ops.setpathinfo = pvfs_setpathinfo;
302 ops.open = pvfs_open;
303 ops.mkdir = pvfs_mkdir;
304 ops.rmdir = pvfs_rmdir;
305 ops.rename = pvfs_rename;
306 ops.copy = pvfs_copy;
307 ops.ioctl = pvfs_ioctl;
308 ops.read = pvfs_read;
309 ops.write = pvfs_write;
310 ops.seek = pvfs_seek;
311 ops.flush = pvfs_flush;
312 ops.close = pvfs_close;
313 ops.exit = pvfs_exit;
314 ops.lock = pvfs_lock;
315 ops.setfileinfo = pvfs_setfileinfo;
316 ops.qfileinfo = pvfs_qfileinfo;
317 ops.fsinfo = pvfs_fsinfo;
319 ops.search_first = pvfs_search_first;
320 ops.search_next = pvfs_search_next;
321 ops.search_close = pvfs_search_close;
322 ops.trans = pvfs_trans;
323 ops.logoff = pvfs_logoff;
324 ops.async_setup = pvfs_async_setup;
325 ops.cancel = pvfs_cancel;
326 ops.notify = pvfs_notify;
328 /* register ourselves with the NTVFS subsystem. We register
329 under the name 'default' as we wish to be the default
330 backend, and also register as 'posix' */
331 ops.name = "default";
332 ret = ntvfs_register(&ops, &vers);
334 if (!NT_STATUS_IS_OK(ret)) {
335 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
339 ret = ntvfs_register(&ops, &vers);
341 if (!NT_STATUS_IS_OK(ret)) {
342 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
345 if (NT_STATUS_IS_OK(ret)) {
346 ret = ntvfs_common_init();