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 #include "onefs_config.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_VFS
  27
  28 static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
  29                          const char *user)
  30 {
  31         int ret;
  32
  33         ret = onefs_load_config(handle->conn);
  34         if (ret) {
  35                 DEBUG(3, ("Load config failed: %s\n", strerror(errno)));
  36                 return ret;
  37         }
  38
  39         return SMB_VFS_NEXT_CONNECT(handle, service, user);
  40 }
  41
  42 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
  43                        mode_t mode)
  44 {
  45         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
  46         SMB_ASSERT(false);
  47         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
  48 }
  49
  50 static int onefs_open(vfs_handle_struct *handle, const char *fname,
  51                       files_struct *fsp, int flags, mode_t mode)
  52 {
  53         /* SMB_VFS_OPEN should never be called in vfs_onefs */
  54         SMB_ASSERT(false);
  55         return SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
  56 }
  57
  58 static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
  59                               files_struct *fromfsp, const DATA_BLOB *header,
  60                               SMB_OFF_T offset, size_t count)
  61 {
  62         ssize_t result;
  63
  64         START_PROFILE_BYTES(syscall_sendfile, count);
  65         result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
  66                                     header, offset, count);
  67         END_PROFILE(syscall_sendfile);
  68         return result;
  69 }
  70
  71 static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
  72                               files_struct *tofsp, SMB_OFF_T offset,
  73                               size_t count)
  74 {
  75         ssize_t result;
  76
  77         START_PROFILE_BYTES(syscall_recvfile, count);
  78         result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
  79         END_PROFILE(syscall_recvfile);
  80         return result;
  81 }
  82
  83 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
  84                                      files_struct *fsp,
  85                                      const SMB_STRUCT_STAT *sbuf)
  86 {
  87         uint64_t result;
  88
  89         START_PROFILE(syscall_get_alloc_size);
  90
  91         if(S_ISDIR(sbuf->st_mode)) {
  92                 result = 0;
  93                 goto out;
  94         }
  95
  96         /* Just use the file size since st_blocks is unreliable on OneFS. */
  97         result = get_file_size_stat(sbuf);
  98
  99         if (fsp && fsp->initial_allocation_size)
 100                 result = MAX(result,fsp->initial_allocation_size);
 101
 102         result = smb_roundup(handle->conn, result);
 103
 104  out:
 105         END_PROFILE(syscall_get_alloc_size);
 106         return result;
 107 }
 108
 109 static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
 110                                              SMB_STRUCT_STAT *sbuf)
 111 {
 112         struct file_id key;
 113
 114         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
 115          * blob */
 116         ZERO_STRUCT(key);
 117
 118         key.devid = sbuf->st_dev;
 119         key.inode = sbuf->st_ino;
 120         key.extid = sbuf->st_snapid;
 121
 122         return key;
 123 }
 124
 125 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
 126                          vfs_statvfs_struct *statbuf)
 127 {
 128         struct statvfs statvfs_buf;
 129         int result;
 130
 131         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
 132         result = statvfs(path, &statvfs_buf);
 133         ZERO_STRUCTP(statbuf);
 134
 135         if (!result) {
 136                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
 137                 statbuf->BlockSize = statvfs_buf.f_bsize;
 138                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
 139                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
 140                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 141                 statbuf->TotalFileNodes = statvfs_buf.f_files;
 142                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 143                 statbuf->FsIdentifier =
 144                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
 145                         0xffffffff00000000LL) |
 146                     (uint64_t)statvfs_buf.f_fsid.val[1];
 147         }
 148         return result;
 149 }
 150
 151 static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
 152                                    const char *name, TALLOC_CTX *mem_ctx,
 153                                    char **found_name)
 154 {
 155         SMB_STRUCT_STAT sb;
 156         struct stat_extra se;
 157         int result;
 158         char *full_name = NULL;
 159
 160         ZERO_STRUCT(se);
 161         se.se_version = ESTAT_CURRENT_VERSION;
 162         se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
 163
 164         if (*path != '\0') {
 165                 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
 166                         errno = ENOMEM;
 167                         DEBUG(2, ("talloc_asprintf failed\n"));
 168                         result = -1;
 169                         goto done;
 170                 }
 171         }
 172
 173         if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
 174                 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
 175                 goto done;
 176         }
 177
 178         *found_name = talloc_strdup(mem_ctx, se.se_realname);
 179         if (*found_name == NULL) {
 180                 errno = ENOMEM;
 181                 result = -1;
 182                 goto done;
 183         }
 184
 185 done:
 186         TALLOC_FREE(full_name);
 187         return result;
 188 }
 189
 190 static int onefs_ntimes(vfs_handle_struct *handle, const char *fname,
 191                         struct smb_file_time *ft)
 192 {
 193         int flags = 0;
 194         struct timespec times[3];
 195
 196         if (!null_timespec(ft->atime)) {
 197                 flags |= VT_ATIME;
 198                 times[0] = ft->atime;
 199                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
 200                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
 201                         ft->atime.tv_nsec));
 202         }
 203
 204         if (!null_timespec(ft->mtime)) {
 205                 flags |= VT_MTIME;
 206                 times[1] = ft->mtime;
 207                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
 208                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
 209                         ft->mtime.tv_nsec));
 210         }
 211
 212         if (!null_timespec(ft->create_time)) {
 213                 flags |= VT_BTIME;
 214                 times[2] = ft->create_time;
 215                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
 216                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
 217                    ft->create_time.tv_nsec));
 218         }
 219
 220         return onefs_vtimes_streams(handle, fname, flags, times);
 221 }
 222
 223 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
 224 {
 225         return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
 226 }
 227
 228 static vfs_op_tuple onefs_ops[] = {
 229         {SMB_VFS_OP(onefs_connect), SMB_VFS_OP_CONNECT,
 230          SMB_VFS_LAYER_TRANSPARENT},
 231         {SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
 232          SMB_VFS_LAYER_TRANSPARENT},
 233         {SMB_VFS_OP(onefs_opendir), SMB_VFS_OP_OPENDIR,
 234          SMB_VFS_LAYER_TRANSPARENT},
 235         {SMB_VFS_OP(onefs_readdir), SMB_VFS_OP_READDIR,
 236          SMB_VFS_LAYER_OPAQUE},
 237         {SMB_VFS_OP(onefs_seekdir), SMB_VFS_OP_SEEKDIR,
 238          SMB_VFS_LAYER_OPAQUE},
 239         {SMB_VFS_OP(onefs_telldir), SMB_VFS_OP_TELLDIR,
 240          SMB_VFS_LAYER_OPAQUE},
 241         {SMB_VFS_OP(onefs_rewinddir), SMB_VFS_OP_REWINDDIR,
 242          SMB_VFS_LAYER_OPAQUE},
 243         {SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
 244          SMB_VFS_LAYER_OPAQUE},
 245         {SMB_VFS_OP(onefs_closedir), SMB_VFS_OP_CLOSEDIR,
 246          SMB_VFS_LAYER_TRANSPARENT},
 247         {SMB_VFS_OP(onefs_init_search_op), SMB_VFS_OP_INIT_SEARCH_OP,
 248          SMB_VFS_LAYER_OPAQUE},
 249         {SMB_VFS_OP(onefs_open), SMB_VFS_OP_OPEN,
 250          SMB_VFS_LAYER_OPAQUE},
 251         {SMB_VFS_OP(onefs_create_file), SMB_VFS_OP_CREATE_FILE,
 252          SMB_VFS_LAYER_OPAQUE},
 253         {SMB_VFS_OP(onefs_close), SMB_VFS_OP_CLOSE,
 254          SMB_VFS_LAYER_TRANSPARENT},
 255         {SMB_VFS_OP(onefs_sendfile), SMB_VFS_OP_SENDFILE,
 256          SMB_VFS_LAYER_OPAQUE},
 257         {SMB_VFS_OP(onefs_recvfile), SMB_VFS_OP_RECVFILE,
 258          SMB_VFS_LAYER_OPAQUE},
 259         {SMB_VFS_OP(onefs_rename), SMB_VFS_OP_RENAME,
 260          SMB_VFS_LAYER_TRANSPARENT},
 261         {SMB_VFS_OP(onefs_stat), SMB_VFS_OP_STAT,
 262          SMB_VFS_LAYER_TRANSPARENT},
 263         {SMB_VFS_OP(onefs_fstat), SMB_VFS_OP_FSTAT,
 264          SMB_VFS_LAYER_TRANSPARENT},
 265         {SMB_VFS_OP(onefs_lstat), SMB_VFS_OP_LSTAT,
 266          SMB_VFS_LAYER_TRANSPARENT},
 267         {SMB_VFS_OP(onefs_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE,
 268          SMB_VFS_LAYER_OPAQUE},
 269         {SMB_VFS_OP(onefs_unlink), SMB_VFS_OP_UNLINK,
 270          SMB_VFS_LAYER_TRANSPARENT},
 271         {SMB_VFS_OP(onefs_ntimes), SMB_VFS_OP_NTIMES,
 272          SMB_VFS_LAYER_OPAQUE},
 273         {SMB_VFS_OP(onefs_chflags), SMB_VFS_OP_CHFLAGS,
 274          SMB_VFS_LAYER_TRANSPARENT},
 275         {SMB_VFS_OP(onefs_file_id_create), SMB_VFS_OP_FILE_ID_CREATE,
 276          SMB_VFS_LAYER_OPAQUE},
 277         {SMB_VFS_OP(onefs_streaminfo), SMB_VFS_OP_STREAMINFO,
 278          SMB_VFS_LAYER_OPAQUE},
 279         {SMB_VFS_OP(onefs_brl_lock_windows), SMB_VFS_OP_BRL_LOCK_WINDOWS,
 280          SMB_VFS_LAYER_OPAQUE},
 281         {SMB_VFS_OP(onefs_brl_unlock_windows), SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
 282          SMB_VFS_LAYER_OPAQUE},
 283         {SMB_VFS_OP(onefs_brl_cancel_windows), SMB_VFS_OP_BRL_CANCEL_WINDOWS,
 284          SMB_VFS_LAYER_OPAQUE},
 285         {SMB_VFS_OP(onefs_notify_watch), SMB_VFS_OP_NOTIFY_WATCH,
 286          SMB_VFS_LAYER_OPAQUE},
 287         {SMB_VFS_OP(onefs_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
 288          SMB_VFS_LAYER_OPAQUE},
 289         {SMB_VFS_OP(onefs_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 290          SMB_VFS_LAYER_OPAQUE},
 291         {SMB_VFS_OP(onefs_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
 292          SMB_VFS_LAYER_OPAQUE},
 293         {SMB_VFS_OP(onefs_statvfs), SMB_VFS_OP_STATVFS,
 294          SMB_VFS_LAYER_OPAQUE},
 295         {SMB_VFS_OP(onefs_get_real_filename), SMB_VFS_OP_GET_REAL_FILENAME,
 296          SMB_VFS_LAYER_OPAQUE},
 297         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 298 };
 299
 300 NTSTATUS vfs_onefs_init(void)
 301 {
 302         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
 303                                 onefs_ops);
 304 }