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 3 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, see <http://www.gnu.org/licenses/>.
22 this implements most of the POSIX NTVFS backend
23 This is the default backend
27 #include "vfs_posix.h"
28 #include "librpc/gen_ndr/security.h"
29 #include "tdb_compat.h"
30 #include "lib/util/tdb_wrap.h"
31 #include "libcli/security/security.h"
32 #include "lib/events/events.h"
33 #include "param/param.h"
36 setup config options for a posix share
38 static void pvfs_setup_options(struct pvfs_state *pvfs)
40 struct share_config *scfg = pvfs->ntvfs->ctx->config;
42 bool def_perm_override = false;
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;
60 if (share_bool_option(scfg, PVFS_AIO, false))
61 pvfs->flags |= PVFS_FLAG_LINUX_AIO;
63 #if defined(O_DIRECTORY) && defined(O_NOFOLLOW)
64 /* set PVFS_PERM_OVERRIDE by default only if the system
65 * supports the necessary capabilities to make it secure
67 def_perm_override = true;
69 if (share_bool_option(scfg, PVFS_PERM_OVERRIDE, def_perm_override))
70 pvfs->flags |= PVFS_FLAG_PERM_OVERRIDE;
72 /* file perm options */
73 pvfs->options.create_mask = share_int_option(scfg,
75 SHARE_CREATE_MASK_DEFAULT);
76 pvfs->options.dir_mask = share_int_option(scfg,
78 SHARE_DIR_MASK_DEFAULT);
79 pvfs->options.force_dir_mode = share_int_option(scfg,
81 SHARE_FORCE_DIR_MODE_DEFAULT);
82 pvfs->options.force_create_mode = share_int_option(scfg,
83 SHARE_FORCE_CREATE_MODE,
84 SHARE_FORCE_CREATE_MODE_DEFAULT);
85 /* this must be a power of 2 */
86 pvfs->alloc_size_rounding = share_int_option(scfg,
87 PVFS_ALLOCATION_ROUNDING,
88 PVFS_ALLOCATION_ROUNDING_DEFAULT);
90 pvfs->search.inactivity_time = share_int_option(scfg,
91 PVFS_SEARCH_INACTIVITY,
92 PVFS_SEARCH_INACTIVITY_DEFAULT);
94 #if HAVE_XATTR_SUPPORT
95 if (share_bool_option(scfg, PVFS_XATTR, PVFS_XATTR_DEFAULT))
96 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
99 pvfs->sharing_violation_delay = share_int_option(scfg,
101 PVFS_SHARE_DELAY_DEFAULT);
103 pvfs->oplock_break_timeout = share_int_option(scfg,
105 PVFS_OPLOCK_TIMEOUT_DEFAULT);
107 pvfs->writetime_delay = share_int_option(scfg,
108 PVFS_WRITETIME_DELAY,
109 PVFS_WRITETIME_DELAY_DEFAULT);
111 pvfs->share_name = talloc_strdup(pvfs, scfg->name);
114 FS_ATTR_CASE_SENSITIVE_SEARCH |
115 FS_ATTR_CASE_PRESERVED_NAMES |
116 FS_ATTR_UNICODE_ON_DISK |
117 FS_ATTR_SPARSE_FILES;
119 /* allow xattrs to be stored in a external tdb */
120 eadb = share_string_option(scfg, PVFS_EADB, NULL);
122 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
123 TDB_DEFAULT, O_RDWR|O_CREAT, 0600,
124 pvfs->ntvfs->ctx->lp_ctx);
125 if (pvfs->ea_db != NULL) {
126 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
128 DEBUG(0,("Failed to open eadb '%s' - %s\n",
129 eadb, strerror(errno)));
130 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
134 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
135 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
137 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
138 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
141 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
142 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
144 /* check if the system really supports xattrs */
145 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
146 pvfs_xattr_probe(pvfs);
149 /* enable an ACL backend */
150 pvfs->acl_ops = pvfs_acl_backend_byname(share_string_option(scfg, PVFS_ACL, "xattr"));
153 static int pvfs_state_destructor(struct pvfs_state *pvfs)
155 struct pvfs_file *f, *fn;
156 struct pvfs_search_state *s, *sn;
159 * make sure we cleanup files and searches before anything else
160 * because there destructors need to acess the pvfs_state struct
162 for (f=pvfs->files.list; f; f=fn) {
167 for (s=pvfs->search.list; s; s=sn) {
176 connect to a share - used when a tree_connect operation comes
177 in. For a disk based backend we needs to ensure that the base
178 directory exists (tho it doesn't need to be accessible by the user,
181 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
182 struct ntvfs_request *req,
183 union smb_tcon* tcon)
185 struct pvfs_state *pvfs;
187 char *base_directory;
189 const char *sharename;
191 switch (tcon->generic.level) {
193 sharename = tcon->tcon.in.service;
196 sharename = tcon->tconx.in.path;
199 sharename = tcon->smb2.in.path;
202 return NT_STATUS_INVALID_LEVEL;
205 if (strncmp(sharename, "\\\\", 2) == 0) {
206 char *p = strchr(sharename+2, '\\');
213 * TODO: call this from ntvfs_posix_init()
214 * but currently we don't have a lp_ctx there
216 status = pvfs_acl_init();
217 NT_STATUS_NOT_OK_RETURN(status);
219 pvfs = talloc_zero(ntvfs, struct pvfs_state);
220 NT_STATUS_HAVE_NO_MEMORY(pvfs);
222 /* for simplicity of path construction, remove any trailing slash now */
223 base_directory = talloc_strdup(pvfs, share_string_option(ntvfs->ctx->config, SHARE_PATH, ""));
224 NT_STATUS_HAVE_NO_MEMORY(base_directory);
225 if (strcmp(base_directory, "/") != 0) {
226 trim_string(base_directory, NULL, "/");
230 pvfs->base_directory = base_directory;
232 /* the directory must exist. Note that we deliberately don't
233 check that it is readable */
234 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
235 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
236 pvfs->base_directory, sharename));
237 return NT_STATUS_BAD_NETWORK_NAME;
240 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
241 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
243 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
244 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
246 if (tcon->generic.level == RAW_TCON_TCONX) {
247 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
248 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
251 ntvfs->private_data = pvfs;
253 pvfs->brl_context = brlock_init(pvfs,
254 pvfs->ntvfs->ctx->server_id,
255 pvfs->ntvfs->ctx->lp_ctx,
256 pvfs->ntvfs->ctx->msg_ctx);
257 if (pvfs->brl_context == NULL) {
258 return NT_STATUS_INTERNAL_DB_CORRUPTION;
261 pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
262 if (pvfs->odb_context == NULL) {
263 return NT_STATUS_INTERNAL_DB_CORRUPTION;
266 /* allow this to be NULL - we just disable change notify */
267 pvfs->notify_context = notify_init(pvfs,
268 pvfs->ntvfs->ctx->server_id,
269 pvfs->ntvfs->ctx->msg_ctx,
270 pvfs->ntvfs->ctx->lp_ctx,
271 pvfs->ntvfs->ctx->event_ctx,
272 pvfs->ntvfs->ctx->config);
274 pvfs->wbc_ctx = wbc_init(pvfs,
275 pvfs->ntvfs->ctx->msg_ctx,
276 pvfs->ntvfs->ctx->event_ctx);
277 if (pvfs->wbc_ctx == NULL) {
278 return NT_STATUS_INTERNAL_DB_CORRUPTION;
281 /* allocate the search handle -> ptr tree */
282 pvfs->search.idtree = idr_init(pvfs);
283 NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
285 status = pvfs_mangle_init(pvfs);
286 NT_STATUS_NOT_OK_RETURN(status);
288 pvfs_setup_options(pvfs);
290 talloc_set_destructor(pvfs, pvfs_state_destructor);
293 /* who had the stupid idea to generate a signal on a large
294 file write instead of just failing it!? */
295 BlockSignals(true, SIGXFSZ);
302 disconnect from a share
304 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
310 check if a directory exists
312 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
313 struct ntvfs_request *req,
314 union smb_chkpath *cp)
316 struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
318 struct pvfs_filename *name;
321 /* resolve the cifs name to a posix name */
322 status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
323 NT_STATUS_NOT_OK_RETURN(status);
326 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
329 if (!S_ISDIR(name->st.st_mode)) {
330 return NT_STATUS_NOT_A_DIRECTORY;
339 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
340 struct ntvfs_request *req, struct smb_copy *cp)
342 DEBUG(0,("pvfs_copy not implemented\n"));
343 return NT_STATUS_NOT_SUPPORTED;
347 return print queue info
349 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
350 struct ntvfs_request *req, union smb_lpq *lpq)
352 return NT_STATUS_NOT_SUPPORTED;
355 /* SMBtrans - not used on file shares */
356 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
357 struct ntvfs_request *req, struct smb_trans2 *trans2)
359 return NT_STATUS_ACCESS_DENIED;
363 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
365 NTSTATUS ntvfs_posix_init(void)
368 struct ntvfs_ops ops;
369 NTVFS_CURRENT_CRITICAL_SIZES(vers);
373 ops.type = NTVFS_DISK;
375 /* fill in all the operations */
376 ops.connect = pvfs_connect;
377 ops.disconnect = pvfs_disconnect;
378 ops.unlink = pvfs_unlink;
379 ops.chkpath = pvfs_chkpath;
380 ops.qpathinfo = pvfs_qpathinfo;
381 ops.setpathinfo = pvfs_setpathinfo;
382 ops.open = pvfs_open;
383 ops.mkdir = pvfs_mkdir;
384 ops.rmdir = pvfs_rmdir;
385 ops.rename = pvfs_rename;
386 ops.copy = pvfs_copy;
387 ops.ioctl = pvfs_ioctl;
388 ops.read = pvfs_read;
389 ops.write = pvfs_write;
390 ops.seek = pvfs_seek;
391 ops.flush = pvfs_flush;
392 ops.close = pvfs_close;
393 ops.exit = pvfs_exit;
394 ops.lock = pvfs_lock;
395 ops.setfileinfo = pvfs_setfileinfo;
396 ops.qfileinfo = pvfs_qfileinfo;
397 ops.fsinfo = pvfs_fsinfo;
399 ops.search_first = pvfs_search_first;
400 ops.search_next = pvfs_search_next;
401 ops.search_close = pvfs_search_close;
402 ops.trans = pvfs_trans;
403 ops.logoff = pvfs_logoff;
404 ops.async_setup = pvfs_async_setup;
405 ops.cancel = pvfs_cancel;
406 ops.notify = pvfs_notify;
408 /* register ourselves with the NTVFS subsystem. We register
409 under the name 'default' as we wish to be the default
410 backend, and also register as 'posix' */
411 ops.name = "default";
412 ret = ntvfs_register(&ops, &vers);
414 if (!NT_STATUS_IS_OK(ret)) {
415 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
419 ret = ntvfs_register(&ops, &vers);
421 if (!NT_STATUS_IS_OK(ret)) {
422 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
425 if (NT_STATUS_IS_OK(ret)) {
426 ret = ntvfs_common_init();