s3: Added SMB_VFS_INIT_SEARCH_OP to initialize data at the beginning of SMB search...
[ira/wip.git] / source3 / modules / vfs_onefs.c
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
24 #undef DBGC_CLASS
25 #define DBGC_CLASS DBGC_VFS
26
27 #define ONEFS_DATA_FASTBUF      10
28
29 struct onefs_vfs_config share_config[ONEFS_DATA_FASTBUF];
30 struct onefs_vfs_config *pshare_config;
31
32 static void onefs_load_faketimestamp_config(struct vfs_handle_struct *handle,
33                                             struct onefs_vfs_config *cfg)
34 {
35         const char **parm;
36         int snum = SNUM(handle->conn);
37
38         parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_NOW,
39                                    NULL);
40
41         if (parm) {
42                 cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
43                 set_namearray(&cfg->atime_now_list,*parm);
44         }
45
46         parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_CTIME_NOW,
47                                    NULL);
48
49         if (parm) {
50                 cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
51                 set_namearray(&cfg->ctime_now_list,*parm);
52         }
53
54         parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_NOW,
55                                    NULL);
56
57         if (parm) {
58                 cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
59                 set_namearray(&cfg->mtime_now_list,*parm);
60         }
61
62         parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_STATIC,
63                                    NULL);
64
65         if (parm) {
66                 cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
67                 set_namearray(&cfg->atime_static_list,*parm);
68         }
69
70         parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_STATIC,
71                                    NULL);
72
73         if (parm) {
74                 cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
75                 set_namearray(&cfg->mtime_static_list,*parm);
76         }
77
78         cfg->atime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_ATIME_SLOP,0);
79         cfg->ctime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_CTIME_SLOP,0);
80         cfg->mtime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_MTIME_SLOP,0);
81 }
82
83
84 static int onefs_load_config(struct vfs_handle_struct *handle)
85 {
86         int snum = SNUM(handle->conn);
87         int share_count = lp_numservices();
88
89         if (!pshare_config) {
90
91                 if (share_count <= ONEFS_DATA_FASTBUF)
92                         pshare_config = share_config;
93                 else {
94                         pshare_config = SMB_MALLOC_ARRAY(struct onefs_vfs_config,
95                                                          share_count);
96                         if (!pshare_config) {
97                                 errno = ENOMEM;
98                                 return -1;
99                         }
100
101                         memset(pshare_config, 0,
102                             (sizeof(struct onefs_vfs_config) * share_count));
103                 }
104         }
105
106         if ((pshare_config[snum].init_flags &
107                 ONEFS_VFS_CONFIG_INITIALIZED) == 0) {
108                         pshare_config[snum].init_flags =
109                             ONEFS_VFS_CONFIG_INITIALIZED;
110                         onefs_load_faketimestamp_config(handle,
111                                                         &pshare_config[snum]);
112         }
113
114         return 0;
115 }
116
117 bool onefs_get_config(int snum, int config_type,
118                       struct onefs_vfs_config *cfg)
119 {
120         if (share_config[snum].init_flags & config_type)
121                 *cfg = share_config[snum];
122         else
123                 return false;
124
125         return true;
126 }
127
128 static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
129                          const char *user)
130 {
131         int ret = onefs_load_config(handle);
132
133         if (ret)
134                 return ret;
135
136         return SMB_VFS_NEXT_CONNECT(handle, service, user);
137 }
138
139 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
140                        mode_t mode)
141 {
142         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
143         SMB_ASSERT(false);
144         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
145 }
146
147 static int onefs_open(vfs_handle_struct *handle, const char *fname,
148                       files_struct *fsp, int flags, mode_t mode)
149 {
150         /* SMB_VFS_OPEN should never be called in vfs_onefs */
151         SMB_ASSERT(false);
152         return SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
153 }
154
155 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,  files_struct *fsp,
156                                 const SMB_STRUCT_STAT *sbuf)
157 {
158         uint64_t result;
159
160         START_PROFILE(syscall_get_alloc_size);
161
162         if(S_ISDIR(sbuf->st_mode)) {
163                 result = 0;
164                 goto out;
165         }
166
167         /* Just use the file size since st_blocks is unreliable on OneFS. */
168         result = get_file_size_stat(sbuf);
169
170         if (fsp && fsp->initial_allocation_size)
171                 result = MAX(result,fsp->initial_allocation_size);
172
173         result = smb_roundup(handle->conn, result);
174
175  out:
176         END_PROFILE(syscall_get_alloc_size);
177         return result;
178 }
179
180 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
181                          vfs_statvfs_struct *statbuf)
182 {
183         struct statvfs statvfs_buf;
184         int result;
185
186         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
187         result = statvfs(path, &statvfs_buf);
188         ZERO_STRUCTP(statbuf);
189
190         if (!result) {
191                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
192                 statbuf->BlockSize = statvfs_buf.f_bsize;
193                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
194                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
195                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
196                 statbuf->TotalFileNodes = statvfs_buf.f_files;
197                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
198                 statbuf->FsIdentifier =
199                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
200                         0xffffffff00000000LL) |
201                     (uint64_t)statvfs_buf.f_fsid.val[1];
202         }
203         return result;
204 }
205
206 static int onefs_ntimes(vfs_handle_struct *handle, const char *fname,
207                         struct smb_file_time *ft)
208 {
209         int flags = 0;
210         struct timespec times[3];
211
212         if (!null_timespec(ft->atime)) {
213                 flags |= VT_ATIME;
214                 times[0] = ft->atime;
215                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
216                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
217                         ft->atime.tv_nsec));
218         }
219
220         if (!null_timespec(ft->mtime)) {
221                 flags |= VT_MTIME;
222                 times[1] = ft->mtime;
223                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
224                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
225                         ft->mtime.tv_nsec));
226         }
227
228         if (!null_timespec(ft->create_time)) {
229                 flags |= VT_BTIME;
230                 times[2] = ft->create_time;
231                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
232                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
233                    ft->create_time.tv_nsec));
234         }
235
236         return onefs_vtimes_streams(handle, fname, flags, times);
237 }
238
239 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
240 {
241         return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
242 }
243
244 static vfs_op_tuple onefs_ops[] = {
245         {SMB_VFS_OP(onefs_connect), SMB_VFS_OP_CONNECT,
246          SMB_VFS_LAYER_TRANSPARENT},
247         {SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
248          SMB_VFS_LAYER_TRANSPARENT},
249         {SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
250          SMB_VFS_LAYER_OPAQUE},
251         {SMB_VFS_OP(onefs_open), SMB_VFS_OP_OPEN,
252          SMB_VFS_LAYER_OPAQUE},
253         {SMB_VFS_OP(onefs_create_file), SMB_VFS_OP_CREATE_FILE,
254          SMB_VFS_LAYER_OPAQUE},
255         {SMB_VFS_OP(onefs_close), SMB_VFS_OP_CLOSE,
256          SMB_VFS_LAYER_TRANSPARENT},
257         {SMB_VFS_OP(onefs_rename), SMB_VFS_OP_RENAME,
258          SMB_VFS_LAYER_TRANSPARENT},
259         {SMB_VFS_OP(onefs_stat), SMB_VFS_OP_STAT,
260          SMB_VFS_LAYER_TRANSPARENT},
261         {SMB_VFS_OP(onefs_fstat), SMB_VFS_OP_FSTAT,
262          SMB_VFS_LAYER_TRANSPARENT},
263         {SMB_VFS_OP(onefs_lstat), SMB_VFS_OP_LSTAT,
264          SMB_VFS_LAYER_TRANSPARENT},
265         {SMB_VFS_OP(onefs_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE,
266          SMB_VFS_LAYER_OPAQUE},
267         {SMB_VFS_OP(onefs_unlink), SMB_VFS_OP_UNLINK,
268          SMB_VFS_LAYER_TRANSPARENT},
269         {SMB_VFS_OP(onefs_ntimes), SMB_VFS_OP_NTIMES,
270          SMB_VFS_LAYER_OPAQUE},
271         {SMB_VFS_OP(onefs_chflags), SMB_VFS_OP_CHFLAGS,
272          SMB_VFS_LAYER_TRANSPARENT},
273         {SMB_VFS_OP(onefs_streaminfo), SMB_VFS_OP_STREAMINFO,
274          SMB_VFS_LAYER_OPAQUE},
275         {SMB_VFS_OP(onefs_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
276          SMB_VFS_LAYER_OPAQUE},
277         {SMB_VFS_OP(onefs_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
278          SMB_VFS_LAYER_OPAQUE},
279         {SMB_VFS_OP(onefs_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
280          SMB_VFS_LAYER_OPAQUE},
281         {SMB_VFS_OP(onefs_statvfs), SMB_VFS_OP_STATVFS,
282          SMB_VFS_LAYER_OPAQUE},
283         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
284 };
285
286 NTSTATUS vfs_onefs_init(void)
287 {
288         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
289                                 onefs_ops);
290 }