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 }