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 = SMB_VFS_NEXT_CONNECT(handle, service, user);
  32
  33         if (ret < 0) {
  34                 return ret;
  35         }
  36
  37         ret = onefs_load_config(handle->conn);
  38         if (ret) {
  39                 SMB_VFS_NEXT_DISCONNECT(handle);
  40                 DEBUG(3, ("Load config failed: %s\n", strerror(errno)));
  41                 return ret;
  42         }
  43
  44         return 0;
  45 }
  46
  47 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
  48                        mode_t mode)
  49 {
  50         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
  51         SMB_ASSERT(false);
  52         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
  53 }
  54
  55 static int onefs_open(vfs_handle_struct *handle,
  56                       struct smb_filename *smb_fname,
  57                       files_struct *fsp, int flags, mode_t mode)
  58 {
  59         /* SMB_VFS_OPEN should never be called in vfs_onefs */
  60         SMB_ASSERT(false);
  61         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
  62 }
  63
  64 static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
  65                               files_struct *fromfsp, const DATA_BLOB *header,
  66                               SMB_OFF_T offset, size_t count)
  67 {
  68         ssize_t result;
  69
  70         START_PROFILE_BYTES(syscall_sendfile, count);
  71         result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
  72                                     header, offset, count);
  73         END_PROFILE(syscall_sendfile);
  74         return result;
  75 }
  76
  77 static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
  78                               files_struct *tofsp, SMB_OFF_T offset,
  79                               size_t count)
  80 {
  81         ssize_t result;
  82
  83         START_PROFILE_BYTES(syscall_recvfile, count);
  84         result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
  85         END_PROFILE(syscall_recvfile);
  86         return result;
  87 }
  88
  89 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
  90                                      files_struct *fsp,
  91                                      const SMB_STRUCT_STAT *sbuf)
  92 {
  93         uint64_t result;
  94
  95         START_PROFILE(syscall_get_alloc_size);
  96
  97         if(S_ISDIR(sbuf->st_ex_mode)) {
  98                 result = 0;
  99                 goto out;
 100         }
 101
 102         /* Just use the file size since st_blocks is unreliable on OneFS. */
 103         result = get_file_size_stat(sbuf);
 104
 105         if (fsp && fsp->initial_allocation_size)
 106                 result = MAX(result,fsp->initial_allocation_size);
 107
 108         result = smb_roundup(handle->conn, result);
 109
 110  out:
 111         END_PROFILE(syscall_get_alloc_size);
 112         return result;
 113 }
 114
 115 static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
 116                                            const SMB_STRUCT_STAT *sbuf)
 117 {
 118         struct file_id key;
 119
 120         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
 121          * blob */
 122         ZERO_STRUCT(key);
 123
 124         key.devid = sbuf->st_ex_dev;
 125         key.inode = sbuf->st_ex_ino;
 126         key.extid = sbuf->vfs_private;
 127
 128         return key;
 129 }
 130
 131 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
 132                          vfs_statvfs_struct *statbuf)
 133 {
 134         struct statvfs statvfs_buf;
 135         int result;
 136
 137         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
 138         result = statvfs(path, &statvfs_buf);
 139         ZERO_STRUCTP(statbuf);
 140
 141         if (!result) {
 142                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
 143                 statbuf->BlockSize = statvfs_buf.f_bsize;
 144                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
 145                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
 146                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 147                 statbuf->TotalFileNodes = statvfs_buf.f_files;
 148                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 149                 statbuf->FsIdentifier =
 150                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
 151                         0xffffffff00000000LL) |
 152                     (uint64_t)statvfs_buf.f_fsid.val[1];
 153         }
 154         return result;
 155 }
 156
 157 static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
 158                                    const char *name, TALLOC_CTX *mem_ctx,
 159                                    char **found_name)
 160 {
 161         struct stat sb;
 162         struct connection_struct *conn = handle->conn;
 163         struct stat_extra se;
 164         int result;
 165         char *unmangled_name = NULL;
 166         char *full_name = NULL;
 167
 168         /* First demangle the name if necessary. */
 169         if (!conn->case_sensitive && mangle_is_mangled(name, conn->params) &&
 170             mangle_lookup_name_from_8_3(mem_ctx, name, &unmangled_name,
 171                                         conn->params)) {
 172                 /* Name is now unmangled. */
 173                 name = unmangled_name;
 174         }
 175
 176         /* Do the case insensitive stat. */
 177         ZERO_STRUCT(se);
 178         se.se_version = ESTAT_CURRENT_VERSION;
 179         se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
 180
 181         if (*path != '\0') {
 182                 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
 183                         errno = ENOMEM;
 184                         DEBUG(2, ("talloc_asprintf failed\n"));
 185                         result = -1;
 186                         goto done;
 187                 }
 188         }
 189
 190         if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
 191                 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
 192                 goto done;
 193         }
 194
 195         *found_name = talloc_strdup(mem_ctx, se.se_realname);
 196         if (*found_name == NULL) {
 197                 errno = ENOMEM;
 198                 result = -1;
 199                 goto done;
 200         }
 201
 202 done:
 203         TALLOC_FREE(full_name);
 204         TALLOC_FREE(unmangled_name);
 205         return result;
 206 }
 207
 208 static int onefs_ntimes(vfs_handle_struct *handle,
 209                         const struct smb_filename *smb_fname,
 210                         struct smb_file_time *ft)
 211 {
 212         int flags = 0;
 213         struct timespec times[3];
 214
 215         if (!null_timespec(ft->atime)) {
 216                 flags |= VT_ATIME;
 217                 times[0] = ft->atime;
 218                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
 219                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
 220                         ft->atime.tv_nsec));
 221         }
 222
 223         if (!null_timespec(ft->mtime)) {
 224                 flags |= VT_MTIME;
 225                 times[1] = ft->mtime;
 226                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
 227                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
 228                         ft->mtime.tv_nsec));
 229         }
 230
 231         if (!null_timespec(ft->create_time)) {
 232                 flags |= VT_BTIME;
 233                 times[2] = ft->create_time;
 234                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
 235                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
 236                    ft->create_time.tv_nsec));
 237         }
 238
 239         return onefs_vtimes_streams(handle, smb_fname, flags, times);
 240 }
 241
 242 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res)
 243 {
 244         uint32_t result = 0;
 245
 246         if (!lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
 247                 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
 248                 result |= FILE_NAMED_STREAMS;
 249         }
 250
 251         result |= SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
 252         *p_ts_res = TIMESTAMP_SET_MSEC;
 253         return result;
 254 }
 255
 256 static struct vfs_fn_pointers onefs_fns = {
 257         .connect_fn = onefs_connect,
 258         .fs_capabilities = onefs_fs_capabilities,
 259         .opendir = onefs_opendir,
 260         .readdir = onefs_readdir,
 261         .seekdir = onefs_seekdir,
 262         .telldir = onefs_telldir,
 263         .rewind_dir = onefs_rewinddir,
 264         .mkdir = onefs_mkdir,
 265         .closedir = onefs_closedir,
 266         .init_search_op = onefs_init_search_op,
 267         .open = onefs_open,
 268         .create_file = onefs_create_file,
 269         .close_fn = onefs_close,
 270         .sendfile = onefs_sendfile,
 271         .recvfile = onefs_recvfile,
 272         .rename = onefs_rename,
 273         .stat = onefs_stat,
 274         .fstat = onefs_fstat,
 275         .lstat = onefs_lstat,
 276         .get_alloc_size = onefs_get_alloc_size,
 277         .unlink = onefs_unlink,
 278         .ntimes = onefs_ntimes,
 279         .file_id_create = onefs_file_id_create,
 280         .streaminfo = onefs_streaminfo,
 281         .brl_lock_windows = onefs_brl_lock_windows,
 282         .brl_unlock_windows = onefs_brl_unlock_windows,
 283         .brl_cancel_windows = onefs_brl_cancel_windows,
 284         .strict_lock = onefs_strict_lock,
 285         .strict_unlock = onefs_strict_unlock,
 286         .notify_watch = onefs_notify_watch,
 287         .fget_nt_acl = onefs_fget_nt_acl,
 288         .get_nt_acl = onefs_get_nt_acl,
 289         .fset_nt_acl = onefs_fset_nt_acl,
 290         .statvfs = onefs_statvfs,
 291         .get_real_filename = onefs_get_real_filename,
 292 };
 293
 294 NTSTATUS vfs_onefs_init(void)
 295 {
 296         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
 297                                 &onefs_fns);
 298 }