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                                    PARM_ATIME_NOW_DEFAULT);
  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                                    PARM_CTIME_NOW_DEFAULT);
  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                                    PARM_MTIME_NOW_DEFAULT);
  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                                    PARM_ATIME_STATIC_DEFAULT);
  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                                    PARM_MTIME_STATIC_DEFAULT);
  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,
  79                                       PARM_ATIME_SLOP_DEFAULT);
  80         cfg->ctime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_CTIME_SLOP,
  81                                       PARM_CTIME_SLOP_DEFAULT);
  82         cfg->mtime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_MTIME_SLOP,
  83                                       PARM_MTIME_SLOP_DEFAULT);
  84 }
  85
  86
  87 static int onefs_load_config(struct vfs_handle_struct *handle)
  88 {
  89         int snum = SNUM(handle->conn);
  90         int share_count = lp_numservices();
  91
  92         if (!pshare_config) {
  93
  94                 if (share_count <= ONEFS_DATA_FASTBUF)
  95                         pshare_config = share_config;
  96                 else {
  97                         pshare_config =
  98                             SMB_MALLOC_ARRAY(struct onefs_vfs_config,
  99                                              share_count);
 100                         if (!pshare_config) {
 101                                 errno = ENOMEM;
 102                                 return -1;
 103                         }
 104
 105                         memset(pshare_config, 0,
 106                             (sizeof(struct onefs_vfs_config) * share_count));
 107                 }
 108         }
 109
 110         if ((pshare_config[snum].init_flags &
 111                 ONEFS_VFS_CONFIG_INITIALIZED) == 0) {
 112                         pshare_config[snum].init_flags =
 113                             ONEFS_VFS_CONFIG_INITIALIZED;
 114                         onefs_load_faketimestamp_config(handle,
 115                                                         &pshare_config[snum]);
 116         }
 117
 118         return 0;
 119 }
 120
 121 bool onefs_get_config(int snum, int config_type,
 122                       struct onefs_vfs_config *cfg)
 123 {
 124         if (share_config[snum].init_flags & config_type)
 125                 *cfg = share_config[snum];
 126         else
 127                 return false;
 128
 129         return true;
 130 }
 131
 132 static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
 133                          const char *user)
 134 {
 135         int ret = onefs_load_config(handle);
 136
 137         if (ret)
 138                 return ret;
 139
 140         return SMB_VFS_NEXT_CONNECT(handle, service, user);
 141 }
 142
 143 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
 144                        mode_t mode)
 145 {
 146         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
 147         SMB_ASSERT(false);
 148         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
 149 }
 150
 151 static int onefs_open(vfs_handle_struct *handle, const char *fname,
 152                       files_struct *fsp, int flags, mode_t mode)
 153 {
 154         /* SMB_VFS_OPEN should never be called in vfs_onefs */
 155         SMB_ASSERT(false);
 156         return SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
 157 }
 158
 159 static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
 160                               files_struct *fromfsp, const DATA_BLOB *header,
 161                               SMB_OFF_T offset, size_t count)
 162 {
 163         ssize_t result;
 164
 165         START_PROFILE_BYTES(syscall_sendfile, count);
 166         result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
 167                                     header, offset, count);
 168         END_PROFILE(syscall_sendfile);
 169         return result;
 170 }
 171
 172 static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
 173                               files_struct *tofsp, SMB_OFF_T offset,
 174                               size_t count)
 175 {
 176         ssize_t result;
 177
 178         START_PROFILE_BYTES(syscall_recvfile, count);
 179         result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
 180         END_PROFILE(syscall_recvfile);
 181         return result;
 182 }
 183
 184 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
 185                                      files_struct *fsp,
 186                                      const SMB_STRUCT_STAT *sbuf)
 187 {
 188         uint64_t result;
 189
 190         START_PROFILE(syscall_get_alloc_size);
 191
 192         if(S_ISDIR(sbuf->st_mode)) {
 193                 result = 0;
 194                 goto out;
 195         }
 196
 197         /* Just use the file size since st_blocks is unreliable on OneFS. */
 198         result = get_file_size_stat(sbuf);
 199
 200         if (fsp && fsp->initial_allocation_size)
 201                 result = MAX(result,fsp->initial_allocation_size);
 202
 203         result = smb_roundup(handle->conn, result);
 204
 205  out:
 206         END_PROFILE(syscall_get_alloc_size);
 207         return result;
 208 }
 209
 210 static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
 211                                              SMB_STRUCT_STAT *sbuf)
 212 {
 213         struct file_id key;
 214
 215         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
 216          * blob */
 217         ZERO_STRUCT(key);
 218
 219         key.devid = sbuf->st_dev;
 220         key.inode = sbuf->st_ino;
 221         key.extid = sbuf->st_snapid;
 222
 223         return key;
 224 }
 225
 226 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
 227                          vfs_statvfs_struct *statbuf)
 228 {
 229         struct statvfs statvfs_buf;
 230         int result;
 231
 232         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
 233         result = statvfs(path, &statvfs_buf);
 234         ZERO_STRUCTP(statbuf);
 235
 236         if (!result) {
 237                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
 238                 statbuf->BlockSize = statvfs_buf.f_bsize;
 239                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
 240                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
 241                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 242                 statbuf->TotalFileNodes = statvfs_buf.f_files;
 243                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 244                 statbuf->FsIdentifier =
 245                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
 246                         0xffffffff00000000LL) |
 247                     (uint64_t)statvfs_buf.f_fsid.val[1];
 248         }
 249         return result;
 250 }
 251
 252 static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
 253                                    const char *name, TALLOC_CTX *mem_ctx,
 254                                    char **found_name)
 255 {
 256         SMB_STRUCT_STAT sb;
 257         struct stat_extra se;
 258         int result;
 259         char *full_name = NULL;
 260
 261         ZERO_STRUCT(se);
 262         se.se_version = ESTAT_CURRENT_VERSION;
 263         se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
 264
 265         if (*path != '\0') {
 266                 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
 267                         errno = ENOMEM;
 268                         DEBUG(2, ("talloc_asprintf failed\n"));
 269                         result = -1;
 270                         goto done;
 271                 }
 272         }
 273
 274         if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
 275                 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
 276                 goto done;
 277         }
 278
 279         *found_name = talloc_strdup(mem_ctx, se.se_realname);
 280         if (*found_name == NULL) {
 281                 errno = ENOMEM;
 282                 result = -1;
 283                 goto done;
 284         }
 285
 286 done:
 287         TALLOC_FREE(full_name);
 288         return result;
 289 }
 290
 291 static int onefs_ntimes(vfs_handle_struct *handle, const char *fname,
 292                         struct smb_file_time *ft)
 293 {
 294         int flags = 0;
 295         struct timespec times[3];
 296
 297         if (!null_timespec(ft->atime)) {
 298                 flags |= VT_ATIME;
 299                 times[0] = ft->atime;
 300                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
 301                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
 302                         ft->atime.tv_nsec));
 303         }
 304
 305         if (!null_timespec(ft->mtime)) {
 306                 flags |= VT_MTIME;
 307                 times[1] = ft->mtime;
 308                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
 309                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
 310                         ft->mtime.tv_nsec));
 311         }
 312
 313         if (!null_timespec(ft->create_time)) {
 314                 flags |= VT_BTIME;
 315                 times[2] = ft->create_time;
 316                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
 317                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
 318                    ft->create_time.tv_nsec));
 319         }
 320
 321         return onefs_vtimes_streams(handle, fname, flags, times);
 322 }
 323
 324 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
 325 {
 326         return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
 327 }
 328
 329 static vfs_op_tuple onefs_ops[] = {
 330         {SMB_VFS_OP(onefs_connect), SMB_VFS_OP_CONNECT,
 331          SMB_VFS_LAYER_TRANSPARENT},
 332         {SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
 333          SMB_VFS_LAYER_TRANSPARENT},
 334         {SMB_VFS_OP(onefs_opendir), SMB_VFS_OP_OPENDIR,
 335          SMB_VFS_LAYER_TRANSPARENT},
 336         {SMB_VFS_OP(onefs_readdir), SMB_VFS_OP_READDIR,
 337          SMB_VFS_LAYER_OPAQUE},
 338         {SMB_VFS_OP(onefs_seekdir), SMB_VFS_OP_SEEKDIR,
 339          SMB_VFS_LAYER_OPAQUE},
 340         {SMB_VFS_OP(onefs_telldir), SMB_VFS_OP_TELLDIR,
 341          SMB_VFS_LAYER_OPAQUE},
 342         {SMB_VFS_OP(onefs_rewinddir), SMB_VFS_OP_REWINDDIR,
 343          SMB_VFS_LAYER_OPAQUE},
 344         {SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
 345          SMB_VFS_LAYER_OPAQUE},
 346         {SMB_VFS_OP(onefs_closedir), SMB_VFS_OP_CLOSEDIR,
 347          SMB_VFS_LAYER_TRANSPARENT},
 348         {SMB_VFS_OP(onefs_init_search_op), SMB_VFS_OP_INIT_SEARCH_OP,
 349          SMB_VFS_LAYER_OPAQUE},
 350         {SMB_VFS_OP(onefs_open), SMB_VFS_OP_OPEN,
 351          SMB_VFS_LAYER_OPAQUE},
 352         {SMB_VFS_OP(onefs_create_file), SMB_VFS_OP_CREATE_FILE,
 353          SMB_VFS_LAYER_OPAQUE},
 354         {SMB_VFS_OP(onefs_close), SMB_VFS_OP_CLOSE,
 355          SMB_VFS_LAYER_TRANSPARENT},
 356         {SMB_VFS_OP(onefs_sendfile), SMB_VFS_OP_SENDFILE,
 357          SMB_VFS_LAYER_OPAQUE},
 358         {SMB_VFS_OP(onefs_recvfile), SMB_VFS_OP_RECVFILE,
 359          SMB_VFS_LAYER_OPAQUE},
 360         {SMB_VFS_OP(onefs_rename), SMB_VFS_OP_RENAME,
 361          SMB_VFS_LAYER_TRANSPARENT},
 362         {SMB_VFS_OP(onefs_stat), SMB_VFS_OP_STAT,
 363          SMB_VFS_LAYER_TRANSPARENT},
 364         {SMB_VFS_OP(onefs_fstat), SMB_VFS_OP_FSTAT,
 365          SMB_VFS_LAYER_TRANSPARENT},
 366         {SMB_VFS_OP(onefs_lstat), SMB_VFS_OP_LSTAT,
 367          SMB_VFS_LAYER_TRANSPARENT},
 368         {SMB_VFS_OP(onefs_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE,
 369          SMB_VFS_LAYER_OPAQUE},
 370         {SMB_VFS_OP(onefs_unlink), SMB_VFS_OP_UNLINK,
 371          SMB_VFS_LAYER_TRANSPARENT},
 372         {SMB_VFS_OP(onefs_ntimes), SMB_VFS_OP_NTIMES,
 373          SMB_VFS_LAYER_OPAQUE},
 374         {SMB_VFS_OP(onefs_chflags), SMB_VFS_OP_CHFLAGS,
 375          SMB_VFS_LAYER_TRANSPARENT},
 376         {SMB_VFS_OP(onefs_file_id_create), SMB_VFS_OP_FILE_ID_CREATE,
 377          SMB_VFS_LAYER_OPAQUE},
 378         {SMB_VFS_OP(onefs_streaminfo), SMB_VFS_OP_STREAMINFO,
 379          SMB_VFS_LAYER_OPAQUE},
 380         {SMB_VFS_OP(onefs_brl_lock_windows), SMB_VFS_OP_BRL_LOCK_WINDOWS,
 381          SMB_VFS_LAYER_OPAQUE},
 382         {SMB_VFS_OP(onefs_brl_unlock_windows), SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
 383          SMB_VFS_LAYER_OPAQUE},
 384         {SMB_VFS_OP(onefs_brl_cancel_windows), SMB_VFS_OP_BRL_CANCEL_WINDOWS,
 385          SMB_VFS_LAYER_OPAQUE},
 386         {SMB_VFS_OP(onefs_notify_watch), SMB_VFS_OP_NOTIFY_WATCH,
 387          SMB_VFS_LAYER_OPAQUE},
 388         {SMB_VFS_OP(onefs_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
 389          SMB_VFS_LAYER_OPAQUE},
 390         {SMB_VFS_OP(onefs_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 391          SMB_VFS_LAYER_OPAQUE},
 392         {SMB_VFS_OP(onefs_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
 393          SMB_VFS_LAYER_OPAQUE},
 394         {SMB_VFS_OP(onefs_statvfs), SMB_VFS_OP_STATVFS,
 395          SMB_VFS_LAYER_OPAQUE},
 396         {SMB_VFS_OP(onefs_get_real_filename), SMB_VFS_OP_GET_REAL_FILENAME,
 397          SMB_VFS_LAYER_OPAQUE},
 398         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 399 };
 400
 401 NTSTATUS vfs_onefs_init(void)
 402 {
 403         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
 404                                 onefs_ops);
 405 }