source: vendor/3.5.0/source3/modules/vfs_onefs.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 7.8 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 "onefs.h"
23#include "onefs_config.h"
24
25#undef DBGC_CLASS
26#define DBGC_CLASS DBGC_VFS
27
28static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
29 const char *user)
30{
31 int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
32
33 if (ret < 0) {
34 return ret;
35 }
36
37 ret = onefs_load_config(handle->conn);
38 if (ret) {
39 SMB_VFS_NEXT_DISCONNECT(handle);
40 DEBUG(3, ("Load config failed: %s\n", strerror(errno)));
41 return ret;
42 }
43
44 return 0;
45}
46
47static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
48 mode_t mode)
49{
50 /* SMB_VFS_MKDIR should never be called in vfs_onefs */
51 SMB_ASSERT(false);
52 return SMB_VFS_NEXT_MKDIR(handle, path, mode);
53}
54
55static int onefs_open(vfs_handle_struct *handle,
56 struct smb_filename *smb_fname,
57 files_struct *fsp, int flags, mode_t mode)
58{
59 /* SMB_VFS_OPEN should never be called in vfs_onefs */
60 SMB_ASSERT(false);
61 return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
62}
63
64static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
65 files_struct *fromfsp, const DATA_BLOB *header,
66 SMB_OFF_T offset, size_t count)
67{
68 ssize_t result;
69
70 START_PROFILE_BYTES(syscall_sendfile, count);
71 result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
72 header, offset, count);
73 END_PROFILE(syscall_sendfile);
74 return result;
75}
76
77static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
78 files_struct *tofsp, SMB_OFF_T offset,
79 size_t count)
80{
81 ssize_t result;
82
83 START_PROFILE_BYTES(syscall_recvfile, count);
84 result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
85 END_PROFILE(syscall_recvfile);
86 return result;
87}
88
89static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
90 files_struct *fsp,
91 const SMB_STRUCT_STAT *sbuf)
92{
93 uint64_t result;
94
95 START_PROFILE(syscall_get_alloc_size);
96
97 if(S_ISDIR(sbuf->st_ex_mode)) {
98 result = 0;
99 goto out;
100 }
101
102 /* Just use the file size since st_blocks is unreliable on OneFS. */
103 result = get_file_size_stat(sbuf);
104
105 if (fsp && fsp->initial_allocation_size)
106 result = MAX(result,fsp->initial_allocation_size);
107
108 result = smb_roundup(handle->conn, result);
109
110 out:
111 END_PROFILE(syscall_get_alloc_size);
112 return result;
113}
114
115static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
116 const SMB_STRUCT_STAT *sbuf)
117{
118 struct file_id key;
119
120 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
121 * blob */
122 ZERO_STRUCT(key);
123
124 key.devid = sbuf->st_ex_dev;
125 key.inode = sbuf->st_ex_ino;
126 key.extid = sbuf->vfs_private;
127
128 return key;
129}
130
131static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
132 vfs_statvfs_struct *statbuf)
133{
134 struct statvfs statvfs_buf;
135 int result;
136
137 DEBUG(5, ("Calling SMB_STAT_VFS \n"));
138 result = statvfs(path, &statvfs_buf);
139 ZERO_STRUCTP(statbuf);
140
141 if (!result) {
142 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
143 statbuf->BlockSize = statvfs_buf.f_bsize;
144 statbuf->TotalBlocks = statvfs_buf.f_blocks;
145 statbuf->BlocksAvail = statvfs_buf.f_bfree;
146 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
147 statbuf->TotalFileNodes = statvfs_buf.f_files;
148 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
149 statbuf->FsIdentifier =
150 (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
151 0xffffffff00000000LL) |
152 (uint64_t)statvfs_buf.f_fsid.val[1];
153 }
154 return result;
155}
156
157static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
158 const char *name, TALLOC_CTX *mem_ctx,
159 char **found_name)
160{
161 struct stat sb;
162 struct connection_struct *conn = handle->conn;
163 struct stat_extra se;
164 int result;
165 char *unmangled_name = NULL;
166 char *full_name = NULL;
167
168 /* First demangle the name if necessary. */
169 if (!conn->case_sensitive && mangle_is_mangled(name, conn->params) &&
170 mangle_lookup_name_from_8_3(mem_ctx, name, &unmangled_name,
171 conn->params)) {
172 /* Name is now unmangled. */
173 name = unmangled_name;
174 }
175
176 /* Do the case insensitive stat. */
177 ZERO_STRUCT(se);
178 se.se_version = ESTAT_CURRENT_VERSION;
179 se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
180
181 if (*path != '\0') {
182 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
183 errno = ENOMEM;
184 DEBUG(2, ("talloc_asprintf failed\n"));
185 result = -1;
186 goto done;
187 }
188 }
189
190 if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
191 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
192 goto done;
193 }
194
195 *found_name = talloc_strdup(mem_ctx, se.se_realname);
196 if (*found_name == NULL) {
197 errno = ENOMEM;
198 result = -1;
199 goto done;
200 }
201
202done:
203 TALLOC_FREE(full_name);
204 TALLOC_FREE(unmangled_name);
205 return result;
206}
207
208static int onefs_ntimes(vfs_handle_struct *handle,
209 const struct smb_filename *smb_fname,
210 struct smb_file_time *ft)
211{
212 int flags = 0;
213 struct timespec times[3];
214
215 if (!null_timespec(ft->atime)) {
216 flags |= VT_ATIME;
217 times[0] = ft->atime;
218 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
219 time_to_asc(convert_timespec_to_time_t(ft->atime)),
220 ft->atime.tv_nsec));
221 }
222
223 if (!null_timespec(ft->mtime)) {
224 flags |= VT_MTIME;
225 times[1] = ft->mtime;
226 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
227 time_to_asc(convert_timespec_to_time_t(ft->mtime)),
228 ft->mtime.tv_nsec));
229 }
230
231 if (!null_timespec(ft->create_time)) {
232 flags |= VT_BTIME;
233 times[2] = ft->create_time;
234 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
235 time_to_asc(convert_timespec_to_time_t(ft->create_time)),
236 ft->create_time.tv_nsec));
237 }
238
239 return onefs_vtimes_streams(handle, smb_fname, flags, times);
240}
241
242static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res)
243{
244 uint32_t result = 0;
245
246 if (!lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
247 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
248 result |= FILE_NAMED_STREAMS;
249 }
250
251 result |= SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
252 *p_ts_res = TIMESTAMP_SET_MSEC;
253 return result;
254}
255
256static struct vfs_fn_pointers onefs_fns = {
257 .connect_fn = onefs_connect,
258 .fs_capabilities = onefs_fs_capabilities,
259 .opendir = onefs_opendir,
260 .readdir = onefs_readdir,
261 .seekdir = onefs_seekdir,
262 .telldir = onefs_telldir,
263 .rewind_dir = onefs_rewinddir,
264 .mkdir = onefs_mkdir,
265 .closedir = onefs_closedir,
266 .init_search_op = onefs_init_search_op,
267 .open = onefs_open,
268 .create_file = onefs_create_file,
269 .close_fn = onefs_close,
270 .sendfile = onefs_sendfile,
271 .recvfile = onefs_recvfile,
272 .rename = onefs_rename,
273 .stat = onefs_stat,
274 .fstat = onefs_fstat,
275 .lstat = onefs_lstat,
276 .get_alloc_size = onefs_get_alloc_size,
277 .unlink = onefs_unlink,
278 .ntimes = onefs_ntimes,
279 .file_id_create = onefs_file_id_create,
280 .streaminfo = onefs_streaminfo,
281 .brl_lock_windows = onefs_brl_lock_windows,
282 .brl_unlock_windows = onefs_brl_unlock_windows,
283 .brl_cancel_windows = onefs_brl_cancel_windows,
284 .strict_lock = onefs_strict_lock,
285 .strict_unlock = onefs_strict_unlock,
286 .notify_watch = onefs_notify_watch,
287 .fget_nt_acl = onefs_fget_nt_acl,
288 .get_nt_acl = onefs_get_nt_acl,
289 .fset_nt_acl = onefs_fset_nt_acl,
290 .statvfs = onefs_statvfs,
291 .get_real_filename = onefs_get_real_filename,
292};
293
294NTSTATUS vfs_onefs_init(void)
295{
296 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
297 &onefs_fns);
298}
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