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 uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
 157                                      files_struct *fsp,
 158                                      const SMB_STRUCT_STAT *sbuf)
 159 {
 160         uint64_t result;
 161
 162         START_PROFILE(syscall_get_alloc_size);
 163
 164         if(S_ISDIR(sbuf->st_mode)) {
 165                 result = 0;
 166                 goto out;
 167         }
 168
 169         /* Just use the file size since st_blocks is unreliable on OneFS. */
 170         result = get_file_size_stat(sbuf);
 171
 172         if (fsp && fsp->initial_allocation_size)
 173                 result = MAX(result,fsp->initial_allocation_size);
 174
 175         result = smb_roundup(handle->conn, result);
 176
 177  out:
 178         END_PROFILE(syscall_get_alloc_size);
 179         return result;
 180 }
 181
 182 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
 183                          vfs_statvfs_struct *statbuf)
 184 {
 185         struct statvfs statvfs_buf;
 186         int result;
 187
 188         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
 189         result = statvfs(path, &statvfs_buf);
 190         ZERO_STRUCTP(statbuf);
 191
 192         if (!result) {
 193                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
 194                 statbuf->BlockSize = statvfs_buf.f_bsize;
 195                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
 196                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
 197                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 198                 statbuf->TotalFileNodes = statvfs_buf.f_files;
 199                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 200                 statbuf->FsIdentifier =
 201                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
 202                         0xffffffff00000000LL) |
 203                     (uint64_t)statvfs_buf.f_fsid.val[1];
 204         }
 205         return result;
 206 }
 207
 208 static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
 209                                    const char *name, TALLOC_CTX *mem_ctx,
 210                                    char **found_name)
 211 {
 212         SMB_STRUCT_STAT sb;
 213         struct stat_extra se;
 214         int result;
 215         char *full_name = NULL;
 216
 217         ZERO_STRUCT(se);
 218         se.se_version = ESTAT_CURRENT_VERSION;
 219         se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
 220
 221         if (*path != '\0') {
 222                 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
 223                         errno = ENOMEM;
 224                         DEBUG(2, ("talloc_asprintf failed\n"));
 225                         result = -1;
 226                         goto done;
 227                 }
 228         }
 229
 230         if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
 231                 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
 232                 goto done;
 233         }
 234
 235         *found_name = talloc_strdup(mem_ctx, se.se_realname);
 236         if (*found_name == NULL) {
 237                 errno = ENOMEM;
 238                 result = -1;
 239                 goto done;
 240         }
 241
 242 done:
 243         TALLOC_FREE(full_name);
 244         return result;
 245 }
 246
 247 static int onefs_ntimes(vfs_handle_struct *handle, const char *fname,
 248                         struct smb_file_time *ft)
 249 {
 250         int flags = 0;
 251         struct timespec times[3];
 252
 253         if (!null_timespec(ft->atime)) {
 254                 flags |= VT_ATIME;
 255                 times[0] = ft->atime;
 256                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
 257                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
 258                         ft->atime.tv_nsec));
 259         }
 260
 261         if (!null_timespec(ft->mtime)) {
 262                 flags |= VT_MTIME;
 263                 times[1] = ft->mtime;
 264                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
 265                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
 266                         ft->mtime.tv_nsec));
 267         }
 268
 269         if (!null_timespec(ft->create_time)) {
 270                 flags |= VT_BTIME;
 271                 times[2] = ft->create_time;
 272                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
 273                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
 274                    ft->create_time.tv_nsec));
 275         }
 276
 277         return onefs_vtimes_streams(handle, fname, flags, times);
 278 }
 279
 280 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
 281 {
 282         return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
 283 }
 284
 285 static vfs_op_tuple onefs_ops[] = {
 286         {SMB_VFS_OP(onefs_connect), SMB_VFS_OP_CONNECT,
 287          SMB_VFS_LAYER_TRANSPARENT},
 288         {SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
 289          SMB_VFS_LAYER_TRANSPARENT},
 290         {SMB_VFS_OP(onefs_opendir), SMB_VFS_OP_OPENDIR,
 291          SMB_VFS_LAYER_TRANSPARENT},
 292         {SMB_VFS_OP(onefs_readdir), SMB_VFS_OP_READDIR,
 293          SMB_VFS_LAYER_OPAQUE},
 294         {SMB_VFS_OP(onefs_seekdir), SMB_VFS_OP_SEEKDIR,
 295          SMB_VFS_LAYER_OPAQUE},
 296         {SMB_VFS_OP(onefs_telldir), SMB_VFS_OP_TELLDIR,
 297          SMB_VFS_LAYER_OPAQUE},
 298         {SMB_VFS_OP(onefs_rewinddir), SMB_VFS_OP_REWINDDIR,
 299          SMB_VFS_LAYER_OPAQUE},
 300         {SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
 301          SMB_VFS_LAYER_OPAQUE},
 302         {SMB_VFS_OP(onefs_closedir), SMB_VFS_OP_CLOSEDIR,
 303          SMB_VFS_LAYER_TRANSPARENT},
 304         {SMB_VFS_OP(onefs_init_search_op), SMB_VFS_OP_INIT_SEARCH_OP,
 305          SMB_VFS_LAYER_OPAQUE},
 306         {SMB_VFS_OP(onefs_open), SMB_VFS_OP_OPEN,
 307          SMB_VFS_LAYER_OPAQUE},
 308         {SMB_VFS_OP(onefs_create_file), SMB_VFS_OP_CREATE_FILE,
 309          SMB_VFS_LAYER_OPAQUE},
 310         {SMB_VFS_OP(onefs_close), SMB_VFS_OP_CLOSE,
 311          SMB_VFS_LAYER_TRANSPARENT},
 312         {SMB_VFS_OP(onefs_rename), SMB_VFS_OP_RENAME,
 313          SMB_VFS_LAYER_TRANSPARENT},
 314         {SMB_VFS_OP(onefs_stat), SMB_VFS_OP_STAT,
 315          SMB_VFS_LAYER_TRANSPARENT},
 316         {SMB_VFS_OP(onefs_fstat), SMB_VFS_OP_FSTAT,
 317          SMB_VFS_LAYER_TRANSPARENT},
 318         {SMB_VFS_OP(onefs_lstat), SMB_VFS_OP_LSTAT,
 319          SMB_VFS_LAYER_TRANSPARENT},
 320         {SMB_VFS_OP(onefs_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE,
 321          SMB_VFS_LAYER_OPAQUE},
 322         {SMB_VFS_OP(onefs_unlink), SMB_VFS_OP_UNLINK,
 323          SMB_VFS_LAYER_TRANSPARENT},
 324         {SMB_VFS_OP(onefs_ntimes), SMB_VFS_OP_NTIMES,
 325          SMB_VFS_LAYER_OPAQUE},
 326         {SMB_VFS_OP(onefs_chflags), SMB_VFS_OP_CHFLAGS,
 327          SMB_VFS_LAYER_TRANSPARENT},
 328         {SMB_VFS_OP(onefs_streaminfo), SMB_VFS_OP_STREAMINFO,
 329          SMB_VFS_LAYER_OPAQUE},
 330         {SMB_VFS_OP(onefs_brl_lock_windows), SMB_VFS_OP_BRL_LOCK_WINDOWS,
 331          SMB_VFS_LAYER_OPAQUE},
 332         {SMB_VFS_OP(onefs_brl_unlock_windows), SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
 333          SMB_VFS_LAYER_OPAQUE},
 334         {SMB_VFS_OP(onefs_brl_cancel_windows), SMB_VFS_OP_BRL_CANCEL_WINDOWS,
 335          SMB_VFS_LAYER_OPAQUE},
 336         {SMB_VFS_OP(onefs_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
 337          SMB_VFS_LAYER_OPAQUE},
 338         {SMB_VFS_OP(onefs_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 339          SMB_VFS_LAYER_OPAQUE},
 340         {SMB_VFS_OP(onefs_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
 341          SMB_VFS_LAYER_OPAQUE},
 342         {SMB_VFS_OP(onefs_statvfs), SMB_VFS_OP_STATVFS,
 343          SMB_VFS_LAYER_OPAQUE},
 344         {SMB_VFS_OP(onefs_get_real_filename), SMB_VFS_OP_GET_REAL_FILENAME,
 345          SMB_VFS_LAYER_OPAQUE},
 346         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 347 };
 348
 349 NTSTATUS vfs_onefs_init(void)
 350 {
 351         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
 352                                 onefs_ops);
 353 }