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 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
  28                        mode_t mode)
  29 {
  30         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
  31         SMB_ASSERT(false);
  32         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
  33 }
  34
  35 static int onefs_open(vfs_handle_struct *handle, const char *fname,
  36                       files_struct *fsp, int flags, mode_t mode)
  37 {
  38         /* SMB_VFS_OPEN should never be called in vfs_onefs */
  39         SMB_ASSERT(false);
  40         return SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
  41 }
  42
  43 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,  files_struct *fsp,
  44                                 const SMB_STRUCT_STAT *sbuf)
  45 {
  46         uint64_t result;
  47
  48         START_PROFILE(syscall_get_alloc_size);
  49
  50         if(S_ISDIR(sbuf->st_mode)) {
  51                 result = 0;
  52                 goto out;
  53         }
  54
  55         /* Just use the file size since st_blocks is unreliable on OneFS. */
  56         result = get_file_size_stat(sbuf);
  57
  58         if (fsp && fsp->initial_allocation_size)
  59                 result = MAX(result,fsp->initial_allocation_size);
  60
  61         result = smb_roundup(handle->conn, result);
  62
  63  out:
  64         END_PROFILE(syscall_get_alloc_size);
  65         return result;
  66 }
  67
  68 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
  69                          vfs_statvfs_struct *statbuf)
  70 {
  71         struct statvfs statvfs_buf;
  72         int result;
  73
  74         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
  75         result = statvfs(path, &statvfs_buf);
  76         ZERO_STRUCTP(statbuf);
  77
  78         if (!result) {
  79                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
  80                 statbuf->BlockSize = statvfs_buf.f_bsize;
  81                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
  82                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
  83                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
  84                 statbuf->TotalFileNodes = statvfs_buf.f_files;
  85                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
  86                 statbuf->FsIdentifier =
  87                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
  88                         0xffffffff00000000LL) |
  89                     (uint64_t)statvfs_buf.f_fsid.val[1];
  90         }
  91         return result;
  92 }
  93
  94 static int onefs_ntimes(vfs_handle_struct *handle, const char *fname,
  95                         struct smb_file_time *ft)
  96 {
  97         int flags = 0;
  98         struct timespec times[3];
  99
 100         if (!null_timespec(ft->atime)) {
 101                 flags |= VT_ATIME;
 102                 times[0] = ft->atime;
 103                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
 104                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
 105                         ft->atime.tv_nsec));
 106         }
 107
 108         if (!null_timespec(ft->mtime)) {
 109                 flags |= VT_MTIME;
 110                 times[1] = ft->mtime;
 111                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
 112                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
 113                         ft->mtime.tv_nsec));
 114         }
 115
 116         if (!null_timespec(ft->create_time)) {
 117                 flags |= VT_BTIME;
 118                 times[2] = ft->create_time;
 119                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
 120                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
 121                    ft->create_time.tv_nsec));
 122         }
 123
 124         return onefs_vtimes_streams(handle, fname, flags, times);
 125 }
 126
 127 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
 128 {
 129         return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
 130 }
 131
 132 static vfs_op_tuple onefs_ops[] = {
 133         {SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
 134          SMB_VFS_LAYER_TRANSPARENT},
 135         {SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
 136          SMB_VFS_LAYER_OPAQUE},
 137         {SMB_VFS_OP(onefs_open), SMB_VFS_OP_OPEN,
 138          SMB_VFS_LAYER_OPAQUE},
 139         {SMB_VFS_OP(onefs_create_file), SMB_VFS_OP_CREATE_FILE,
 140          SMB_VFS_LAYER_OPAQUE},
 141         {SMB_VFS_OP(onefs_close), SMB_VFS_OP_CLOSE,
 142          SMB_VFS_LAYER_TRANSPARENT},
 143         {SMB_VFS_OP(onefs_rename), SMB_VFS_OP_RENAME,
 144          SMB_VFS_LAYER_TRANSPARENT},
 145         {SMB_VFS_OP(onefs_stat), SMB_VFS_OP_STAT,
 146          SMB_VFS_LAYER_TRANSPARENT},
 147         {SMB_VFS_OP(onefs_fstat), SMB_VFS_OP_FSTAT,
 148          SMB_VFS_LAYER_TRANSPARENT},
 149         {SMB_VFS_OP(onefs_lstat), SMB_VFS_OP_LSTAT,
 150          SMB_VFS_LAYER_TRANSPARENT},
 151         {SMB_VFS_OP(onefs_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE,
 152          SMB_VFS_LAYER_OPAQUE},
 153         {SMB_VFS_OP(onefs_unlink), SMB_VFS_OP_UNLINK,
 154          SMB_VFS_LAYER_TRANSPARENT},
 155         {SMB_VFS_OP(onefs_ntimes), SMB_VFS_OP_NTIMES,
 156          SMB_VFS_LAYER_OPAQUE},
 157         {SMB_VFS_OP(onefs_chflags), SMB_VFS_OP_CHFLAGS,
 158          SMB_VFS_LAYER_TRANSPARENT},
 159         {SMB_VFS_OP(onefs_streaminfo), SMB_VFS_OP_STREAMINFO,
 160          SMB_VFS_LAYER_OPAQUE},
 161         {SMB_VFS_OP(onefs_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
 162          SMB_VFS_LAYER_OPAQUE},
 163         {SMB_VFS_OP(onefs_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 164          SMB_VFS_LAYER_OPAQUE},
 165         {SMB_VFS_OP(onefs_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
 166          SMB_VFS_LAYER_OPAQUE},
 167         {SMB_VFS_OP(onefs_statvfs), SMB_VFS_OP_STATVFS,
 168          SMB_VFS_LAYER_OPAQUE},
 169         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 170 };
 171
 172 NTSTATUS vfs_onefs_init(void)
 173 {
 174         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
 175                                 onefs_ops);
 176 }