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;
60 if (share_bool_option(scfg, PVFS_AIO, False))
61 pvfs->flags |= PVFS_FLAG_LINUX_AIO;
63 /* this must be a power of 2 */
64 pvfs->alloc_size_rounding = share_int_option(scfg,
65 PVFS_ALLOCATION_ROUNDING,
66 PVFS_ALLOCATION_ROUNDING_DEFAULT);
68 pvfs->search.inactivity_time = share_int_option(scfg,
69 PVFS_SEARCH_INACTIVITY,
70 PVFS_SEARCH_INACTIVITY_DEFAULT);
72 #if HAVE_XATTR_SUPPORT
73 if (share_bool_option(scfg, PVFS_XATTR, PVFS_XATTR_DEFAULT))
74 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
77 pvfs->sharing_violation_delay = share_int_option(scfg,
79 PVFS_SHARE_DELAY_DEFAULT);
81 pvfs->share_name = talloc_strdup(pvfs, scfg->name);
84 FS_ATTR_CASE_SENSITIVE_SEARCH |
85 FS_ATTR_CASE_PRESERVED_NAMES |
86 FS_ATTR_UNICODE_ON_DISK |
89 /* allow xattrs to be stored in a external tdb */
90 eadb = share_string_option(scfg, PVFS_EADB, NULL);
92 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
93 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
94 if (pvfs->ea_db != NULL) {
95 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
97 DEBUG(0,("Failed to open eadb '%s' - %s\n",
98 eadb, strerror(errno)));
99 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
103 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
104 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
106 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
107 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
110 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
111 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
113 /* check if the system really supports xattrs */
114 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
115 pvfs_xattr_probe(pvfs);
118 /* enable an ACL backend */
119 pvfs->acl_ops = pvfs_acl_backend_byname(share_string_option(scfg, PVFS_ACL, "xattr"));
122 static int pvfs_state_destructor(struct pvfs_state *pvfs)
124 struct pvfs_file *f, *fn;
125 struct pvfs_search_state *s, *sn;
128 * make sure we cleanup files and searches before anything else
129 * because there destructors need to acess the pvfs_state struct
131 for (f=pvfs->files.list; f; f=fn) {
136 for (s=pvfs->search.list; s; s=sn) {
145 connect to a share - used when a tree_connect operation comes
146 in. For a disk based backend we needs to ensure that the base
147 directory exists (tho it doesn't need to be accessible by the user,
150 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
151 struct ntvfs_request *req, const char *sharename)
153 struct pvfs_state *pvfs;
155 char *base_directory;
158 pvfs = talloc_zero(ntvfs, struct pvfs_state);
159 NT_STATUS_HAVE_NO_MEMORY(pvfs);
161 /* for simplicity of path construction, remove any trailing slash now */
162 base_directory = talloc_strdup(pvfs, share_string_option(ntvfs->ctx->config, SHARE_PATH, ""));
163 NT_STATUS_HAVE_NO_MEMORY(base_directory);
164 if (strcmp(base_directory, "/") != 0) {
165 trim_string(base_directory, NULL, "/");
169 pvfs->base_directory = base_directory;
171 /* the directory must exist. Note that we deliberately don't
172 check that it is readable */
173 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
174 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
175 pvfs->base_directory, sharename));
176 return NT_STATUS_BAD_NETWORK_NAME;
179 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
180 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
182 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
183 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
185 ntvfs->private_data = pvfs;
187 pvfs->brl_context = brl_init(pvfs,
188 pvfs->ntvfs->ctx->server_id,
189 pvfs->ntvfs->ctx->msg_ctx);
190 if (pvfs->brl_context == NULL) {
191 return NT_STATUS_INTERNAL_DB_CORRUPTION;
194 pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
195 if (pvfs->odb_context == NULL) {
196 return NT_STATUS_INTERNAL_DB_CORRUPTION;
199 /* allow this to be NULL - we just disable change notify */
200 pvfs->notify_context = notify_init(pvfs,
201 pvfs->ntvfs->ctx->server_id,
202 pvfs->ntvfs->ctx->msg_ctx,
203 event_context_find(pvfs),
204 pvfs->ntvfs->ctx->config);
206 pvfs->sidmap = sidmap_open(pvfs);
207 if (pvfs->sidmap == NULL) {
208 return NT_STATUS_INTERNAL_DB_CORRUPTION;
211 /* allocate the search handle -> ptr tree */
212 pvfs->search.idtree = idr_init(pvfs);
213 NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
215 status = pvfs_mangle_init(pvfs);
216 NT_STATUS_NOT_OK_RETURN(status);
218 pvfs_setup_options(pvfs);
220 talloc_set_destructor(pvfs, pvfs_state_destructor);
223 /* who had the stupid idea to generate a signal on a large
224 file write instead of just failing it!? */
225 BlockSignals(True, SIGXFSZ);
232 disconnect from a share
234 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
240 check if a directory exists
242 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
243 struct ntvfs_request *req,
244 union smb_chkpath *cp)
246 struct pvfs_state *pvfs = ntvfs->private_data;
247 struct pvfs_filename *name;
250 /* resolve the cifs name to a posix name */
251 status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
252 NT_STATUS_NOT_OK_RETURN(status);
255 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
258 if (!S_ISDIR(name->st.st_mode)) {
259 return NT_STATUS_NOT_A_DIRECTORY;
268 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
269 struct ntvfs_request *req, struct smb_copy *cp)
271 DEBUG(0,("pvfs_copy not implemented\n"));
272 return NT_STATUS_NOT_SUPPORTED;
276 return print queue info
278 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
279 struct ntvfs_request *req, union smb_lpq *lpq)
281 return NT_STATUS_NOT_SUPPORTED;
284 /* SMBtrans - not used on file shares */
285 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
286 struct ntvfs_request *req, struct smb_trans2 *trans2)
288 return NT_STATUS_ACCESS_DENIED;
292 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
294 NTSTATUS ntvfs_posix_init(void)
297 struct ntvfs_ops ops;
298 NTVFS_CURRENT_CRITICAL_SIZES(vers);
302 ops.type = NTVFS_DISK;
304 /* fill in all the operations */
305 ops.connect = pvfs_connect;
306 ops.disconnect = pvfs_disconnect;
307 ops.unlink = pvfs_unlink;
308 ops.chkpath = pvfs_chkpath;
309 ops.qpathinfo = pvfs_qpathinfo;
310 ops.setpathinfo = pvfs_setpathinfo;
311 ops.open = pvfs_open;
312 ops.mkdir = pvfs_mkdir;
313 ops.rmdir = pvfs_rmdir;
314 ops.rename = pvfs_rename;
315 ops.copy = pvfs_copy;
316 ops.ioctl = pvfs_ioctl;
317 ops.read = pvfs_read;
318 ops.write = pvfs_write;
319 ops.seek = pvfs_seek;
320 ops.flush = pvfs_flush;
321 ops.close = pvfs_close;
322 ops.exit = pvfs_exit;
323 ops.lock = pvfs_lock;
324 ops.setfileinfo = pvfs_setfileinfo;
325 ops.qfileinfo = pvfs_qfileinfo;
326 ops.fsinfo = pvfs_fsinfo;
328 ops.search_first = pvfs_search_first;
329 ops.search_next = pvfs_search_next;
330 ops.search_close = pvfs_search_close;
331 ops.trans = pvfs_trans;
332 ops.logoff = pvfs_logoff;
333 ops.async_setup = pvfs_async_setup;
334 ops.cancel = pvfs_cancel;
335 ops.notify = pvfs_notify;
337 /* register ourselves with the NTVFS subsystem. We register
338 under the name 'default' as we wish to be the default
339 backend, and also register as 'posix' */
340 ops.name = "default";
341 ret = ntvfs_register(&ops, &vers);
343 if (!NT_STATUS_IS_OK(ret)) {
344 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
348 ret = ntvfs_register(&ops, &vers);
350 if (!NT_STATUS_IS_OK(ret)) {
351 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
354 if (NT_STATUS_IS_OK(ret)) {
355 ret = ntvfs_common_init();