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