source: vendor/3.6.9/source3/modules/vfs_onefs.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 8.2 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * Support for OneFS
4 *
5 * Copyright (C) Tim Prouty, 2008
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include "includes.h"
22#include "smbd/smbd.h"
23#include "onefs.h"
24#include "onefs_config.h"
25
26#undef DBGC_CLASS
27#define DBGC_CLASS DBGC_VFS
28
29static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
30 const char *user)
31{
32 int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
33
34 if (ret < 0) {
35 return ret;
36 }
37
38 ret = onefs_load_config(handle->conn);
39 if (ret) {
40 SMB_VFS_NEXT_DISCONNECT(handle);
41 DEBUG(3, ("Load config failed: %s\n", strerror(errno)));
42 return ret;
43 }
44
45 return 0;
46}
47
48static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
49 mode_t mode)
50{
51 /* SMB_VFS_MKDIR should never be called in vfs_onefs */
52 SMB_ASSERT(false);
53 return SMB_VFS_NEXT_MKDIR(handle, path, mode);
54}
55
56static int onefs_open(vfs_handle_struct *handle,
57 struct smb_filename *smb_fname,
58 files_struct *fsp, int flags, mode_t mode)
59{
60 /* SMB_VFS_OPEN should never be called in vfs_onefs */
61 SMB_ASSERT(false);
62 return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
63}
64
65static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
66 files_struct *fromfsp, const DATA_BLOB *header,
67 SMB_OFF_T offset, size_t count)
68{
69 ssize_t result;
70
71 START_PROFILE_BYTES(syscall_sendfile, count);
72 result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
73 header, offset, count);
74 END_PROFILE(syscall_sendfile);
75 return result;
76}
77
78static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
79 files_struct *tofsp, SMB_OFF_T offset,
80 size_t count)
81{
82 ssize_t result;
83
84 START_PROFILE_BYTES(syscall_recvfile, count);
85 result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
86 END_PROFILE(syscall_recvfile);
87 return result;
88}
89
90static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
91 files_struct *fsp,
92 const SMB_STRUCT_STAT *sbuf)
93{
94 uint64_t result;
95
96 START_PROFILE(syscall_get_alloc_size);
97
98 if(S_ISDIR(sbuf->st_ex_mode)) {
99 result = 0;
100 goto out;
101 }
102
103 /* Just use the file size since st_blocks is unreliable on OneFS. */
104 result = get_file_size_stat(sbuf);
105
106 if (fsp && fsp->initial_allocation_size)
107 result = MAX(result,fsp->initial_allocation_size);
108
109 result = smb_roundup(handle->conn, result);
110
111 out:
112 END_PROFILE(syscall_get_alloc_size);
113 return result;
114}
115
116static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
117 const SMB_STRUCT_STAT *sbuf)
118{
119 struct file_id key;
120
121 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
122 * blob */
123 ZERO_STRUCT(key);
124
125 key.devid = sbuf->st_ex_dev;
126 key.inode = sbuf->st_ex_ino;
127 key.extid = sbuf->vfs_private;
128
129 return key;
130}
131
132static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
133 vfs_statvfs_struct *statbuf)
134{
135 struct statvfs statvfs_buf;
136 int result;
137
138 DEBUG(5, ("Calling SMB_STAT_VFS \n"));
139 result = statvfs(path, &statvfs_buf);
140 ZERO_STRUCTP(statbuf);
141
142 if (!result) {
143 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
144 statbuf->BlockSize = statvfs_buf.f_bsize;
145 statbuf->TotalBlocks = statvfs_buf.f_blocks;
146 statbuf->BlocksAvail = statvfs_buf.f_bfree;
147 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
148 statbuf->TotalFileNodes = statvfs_buf.f_files;
149 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
150 statbuf->FsIdentifier =
151 (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
152 0xffffffff00000000LL) |
153 (uint64_t)statvfs_buf.f_fsid.val[1];
154 }
155 return result;
156}
157
158static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
159 const char *name, TALLOC_CTX *mem_ctx,
160 char **found_name)
161{
162 struct stat sb;
163 struct connection_struct *conn = handle->conn;
164 struct stat_extra se;
165 int result;
166 char *unmangled_name = NULL;
167 char *full_name = NULL;
168
169 /* First demangle the name if necessary. */
170 if (!conn->case_sensitive && mangle_is_mangled(name, conn->params) &&
171 mangle_lookup_name_from_8_3(mem_ctx, name, &unmangled_name,
172 conn->params)) {
173 /* Name is now unmangled. */
174 name = unmangled_name;
175 }
176
177 /* Do the case insensitive stat. */
178 ZERO_STRUCT(se);
179 se.se_version = ESTAT_CURRENT_VERSION;
180 se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
181
182 if (*path != '\0') {
183 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
184 errno = ENOMEM;
185 DEBUG(2, ("talloc_asprintf failed\n"));
186 result = -1;
187 goto done;
188 }
189 }
190
191 if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
192 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
193 goto done;
194 }
195
196 *found_name = talloc_strdup(mem_ctx, se.se_realname);
197 if (*found_name == NULL) {
198 errno = ENOMEM;
199 result = -1;
200 goto done;
201 }
202
203done:
204 TALLOC_FREE(full_name);
205 TALLOC_FREE(unmangled_name);
206 return result;
207}
208
209static int onefs_ntimes(vfs_handle_struct *handle,
210 const struct smb_filename *smb_fname,
211 struct smb_file_time *ft)
212{
213 int flags = 0;
214 struct timespec times[3];
215
216 if (!null_timespec(ft->atime)) {
217 flags |= VT_ATIME;
218 times[0] = ft->atime;
219 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
220 time_to_asc(convert_timespec_to_time_t(ft->atime)),
221 ft->atime.tv_nsec));
222 }
223
224 if (!null_timespec(ft->mtime)) {
225 flags |= VT_MTIME;
226 times[1] = ft->mtime;
227 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
228 time_to_asc(convert_timespec_to_time_t(ft->mtime)),
229 ft->mtime.tv_nsec));
230 }
231
232 if (!null_timespec(ft->create_time)) {
233 flags |= VT_BTIME;
234 times[2] = ft->create_time;
235 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
236 time_to_asc(convert_timespec_to_time_t(ft->create_time)),
237 ft->create_time.tv_nsec));
238 }
239
240 return onefs_vtimes_streams(handle, smb_fname, flags, times);
241}
242
243static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res)
244{
245 uint32_t result = 0;
246
247 if (!lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
248 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
249 result |= FILE_NAMED_STREAMS;
250 }
251
252 result |= SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
253 *p_ts_res = TIMESTAMP_SET_MSEC;
254 return result;
255}
256
257static struct vfs_fn_pointers onefs_fns = {
258 .connect_fn = onefs_connect,
259 .fs_capabilities = onefs_fs_capabilities,
260 .opendir = onefs_opendir,
261 .readdir = onefs_readdir,
262 .seekdir = onefs_seekdir,
263 .telldir = onefs_telldir,
264 .rewind_dir = onefs_rewinddir,
265 .mkdir = onefs_mkdir,
266 .closedir = onefs_closedir,
267 .init_search_op = onefs_init_search_op,
268 .open_fn = onefs_open,
269 .create_file = onefs_create_file,
270 .close_fn = onefs_close,
271 .sendfile = onefs_sendfile,
272 .recvfile = onefs_recvfile,
273 .rename = onefs_rename,
274 .stat = onefs_stat,
275 .fstat = onefs_fstat,
276 .lstat = onefs_lstat,
277 .get_alloc_size = onefs_get_alloc_size,
278 .unlink = onefs_unlink,
279 .ntimes = onefs_ntimes,
280 .file_id_create = onefs_file_id_create,
281 .streaminfo = onefs_streaminfo,
282 .brl_lock_windows = onefs_brl_lock_windows,
283 .brl_unlock_windows = onefs_brl_unlock_windows,
284 .brl_cancel_windows = onefs_brl_cancel_windows,
285 .strict_lock = onefs_strict_lock,
286 .strict_unlock = onefs_strict_unlock,
287 .notify_watch = onefs_notify_watch,
288 .fget_nt_acl = onefs_fget_nt_acl,
289 .get_nt_acl = onefs_get_nt_acl,
290 .fset_nt_acl = onefs_fset_nt_acl,
291 .statvfs = onefs_statvfs,
292 .get_real_filename = onefs_get_real_filename,
293};
294
295NTSTATUS vfs_onefs_init(void)
296{
297 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
298 &onefs_fns);
299}
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