source3/smbd/smb2_close.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   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 "smbd/smbd.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "../lib/util/tevent_ntstatus.h"
  26 #include "lib/tevent_wait.h"
  27
  28 static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
  29                                                struct tevent_context *ev,
  30                                                struct smbd_smb2_request *smb2req,
  31                                                struct files_struct *in_fsp,
  32                                                uint16_t in_flags);
  33 static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
  34                                      uint16_t *out_flags,
  35                                      NTTIME *out_creation_time,
  36                                      NTTIME *out_last_access_time,
  37                                      NTTIME *out_last_write_time,
  38                                      NTTIME *out_change_time,
  39                                      uint64_t *out_allocation_size,
  40                                      uint64_t *out_end_of_file,
  41                                      uint32_t *out_file_attributes);
  42
  43 static void smbd_smb2_request_close_done(struct tevent_req *subreq);
  44
  45 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
  46 {
  47         const uint8_t *inbody;
  48         int i = req->current_idx;
  49         uint16_t in_flags;
  50         uint64_t in_file_id_persistent;
  51         uint64_t in_file_id_volatile;
  52         struct files_struct *in_fsp;
  53         NTSTATUS status;
  54         struct tevent_req *subreq;
  55
  56         status = smbd_smb2_request_verify_sizes(req, 0x18);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 return smbd_smb2_request_error(req, status);
  59         }
  60         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  61
  62         in_flags                = SVAL(inbody, 0x02);
  63         in_file_id_persistent   = BVAL(inbody, 0x08);
  64         in_file_id_volatile     = BVAL(inbody, 0x10);
  65
  66         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
  67         if (in_fsp == NULL) {
  68                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  69         }
  70
  71         subreq = smbd_smb2_close_send(req, req->sconn->ev_ctx,
  72                                       req, in_fsp, in_flags);
  73         if (subreq == NULL) {
  74                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  75         }
  76         tevent_req_set_callback(subreq, smbd_smb2_request_close_done, req);
  77
  78         return smbd_smb2_request_pending_queue(req, subreq, 500);
  79 }
  80
  81 static void smbd_smb2_request_close_done(struct tevent_req *subreq)
  82 {
  83         struct smbd_smb2_request *req =
  84                 tevent_req_callback_data(subreq,
  85                 struct smbd_smb2_request);
  86         DATA_BLOB outbody;
  87         uint16_t out_flags;
  88         NTTIME out_creation_time;
  89         NTTIME out_last_access_time;
  90         NTTIME out_last_write_time;
  91         NTTIME out_change_time;
  92         uint64_t out_allocation_size;
  93         uint64_t out_end_of_file;
  94         uint32_t out_file_attributes;
  95         NTSTATUS status;
  96         NTSTATUS error;
  97
  98         status = smbd_smb2_close_recv(subreq,
  99                                       &out_flags,
 100                                       &out_creation_time,
 101                                       &out_last_access_time,
 102                                       &out_last_write_time,
 103                                       &out_change_time,
 104                                       &out_allocation_size,
 105                                       &out_end_of_file,
 106                                       &out_file_attributes);
 107         TALLOC_FREE(subreq);
 108         if (!NT_STATUS_IS_OK(status)) {
 109                 error = smbd_smb2_request_error(req, status);
 110                 if (!NT_STATUS_IS_OK(error)) {
 111                         smbd_server_connection_terminate(req->sconn,
 112                                                          nt_errstr(error));
 113                         return;
 114                 }
 115                 return;
 116         }
 117
 118         outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
 119         if (outbody.data == NULL) {
 120                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 121                 if (!NT_STATUS_IS_OK(error)) {
 122                         smbd_server_connection_terminate(req->sconn,
 123                                                          nt_errstr(error));
 124                         return;
 125                 }
 126                 return;
 127         }
 128
 129         SSVAL(outbody.data, 0x00, 0x3C);        /* struct size */
 130         SSVAL(outbody.data, 0x02, out_flags);
 131         SIVAL(outbody.data, 0x04, 0);           /* reserved */
 132         SBVAL(outbody.data, 0x08, out_creation_time);
 133         SBVAL(outbody.data, 0x10, out_last_access_time);
 134         SBVAL(outbody.data, 0x18, out_last_write_time);
 135         SBVAL(outbody.data, 0x20, out_change_time);
 136         SBVAL(outbody.data, 0x28, out_allocation_size);
 137         SBVAL(outbody.data, 0x30, out_end_of_file);
 138         SIVAL(outbody.data, 0x38, out_file_attributes);
 139
 140         error = smbd_smb2_request_done(req, outbody, NULL);
 141         if (!NT_STATUS_IS_OK(error)) {
 142                 smbd_server_connection_terminate(req->sconn,
 143                                                  nt_errstr(error));
 144                 return;
 145         }
 146 }
 147
 148 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
 149                                 struct files_struct *fsp,
 150                                 uint16_t in_flags,
 151                                 uint16_t *out_flags,
 152                                 NTTIME *out_creation_time,
 153                                 NTTIME *out_last_access_time,
 154                                 NTTIME *out_last_write_time,
 155                                 NTTIME *out_change_time,
 156                                 uint64_t *out_allocation_size,
 157                                 uint64_t *out_end_of_file,
 158                                 uint32_t *out_file_attributes)
 159 {
 160         NTSTATUS status;
 161         struct smb_request *smbreq;
 162         connection_struct *conn = req->tcon->compat;
 163         struct smb_filename *smb_fname = NULL;
 164         struct timespec mdate_ts, adate_ts, cdate_ts, create_date_ts;
 165         uint64_t allocation_size = 0;
 166         uint64_t file_size = 0;
 167         uint32_t dos_attrs = 0;
 168         uint16_t flags = 0;
 169         bool posix_open = false;
 170
 171         ZERO_STRUCT(create_date_ts);
 172         ZERO_STRUCT(adate_ts);
 173         ZERO_STRUCT(mdate_ts);
 174         ZERO_STRUCT(cdate_ts);
 175
 176         *out_flags = 0;
 177         *out_creation_time = 0;
 178         *out_last_access_time = 0;
 179         *out_last_write_time = 0;
 180         *out_change_time = 0;
 181         *out_allocation_size = 0;
 182         *out_end_of_file = 0;
 183         *out_file_attributes = 0;
 184
 185         DEBUG(10,("smbd_smb2_close: %s - %s\n",
 186                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 187
 188         smbreq = smbd_smb2_fake_smb_request(req);
 189         if (smbreq == NULL) {
 190                 return NT_STATUS_NO_MEMORY;
 191         }
 192
 193         posix_open = fsp->posix_open;
 194         status = copy_smb_filename(talloc_tos(),
 195                                 fsp->fsp_name,
 196                                 &smb_fname);
 197         if (!NT_STATUS_IS_OK(status)) {
 198                 return status;
 199         }
 200
 201         status = close_file(smbreq, fsp, NORMAL_CLOSE);
 202         if (!NT_STATUS_IS_OK(status)) {
 203                 DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
 204                          fsp_str_dbg(fsp), nt_errstr(status)));
 205                 return status;
 206         }
 207
 208         if (in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
 209                 int ret;
 210                 if (posix_open) {
 211                         ret = SMB_VFS_LSTAT(conn, smb_fname);
 212                 } else {
 213                         ret = SMB_VFS_STAT(conn, smb_fname);
 214                 }
 215                 if (ret == 0) {
 216                         flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
 217                         dos_attrs = dos_mode(conn, smb_fname);
 218                         mdate_ts = smb_fname->st.st_ex_mtime;
 219                         adate_ts = smb_fname->st.st_ex_atime;
 220                         create_date_ts = get_create_timespec(conn, NULL, smb_fname);
 221                         cdate_ts = get_change_timespec(conn, NULL, smb_fname);
 222
 223                         if (lp_dos_filetime_resolution(SNUM(conn))) {
 224                                 dos_filetime_timespec(&create_date_ts);
 225                                 dos_filetime_timespec(&mdate_ts);
 226                                 dos_filetime_timespec(&adate_ts);
 227                                 dos_filetime_timespec(&cdate_ts);
 228                         }
 229                         if (!(dos_attrs & FILE_ATTRIBUTE_DIRECTORY)) {
 230                                 file_size = get_file_size_stat(&smb_fname->st);
 231                         }
 232
 233                         allocation_size = SMB_VFS_GET_ALLOC_SIZE(conn, NULL, &smb_fname->st);
 234                 }
 235         }
 236
 237         *out_flags = flags;
 238
 239         round_timespec(conn->ts_res, &create_date_ts);
 240         unix_timespec_to_nt_time(out_creation_time, create_date_ts);
 241
 242         round_timespec(conn->ts_res, &adate_ts);
 243         unix_timespec_to_nt_time(out_last_access_time, adate_ts);
 244
 245         round_timespec(conn->ts_res, &mdate_ts);
 246         unix_timespec_to_nt_time(out_last_write_time, mdate_ts);
 247
 248         round_timespec(conn->ts_res, &cdate_ts);
 249         unix_timespec_to_nt_time(out_change_time, cdate_ts);
 250
 251         *out_allocation_size = allocation_size;
 252         *out_end_of_file = file_size;
 253         *out_file_attributes = dos_attrs;
 254
 255         return NT_STATUS_OK;
 256 }
 257
 258 struct smbd_smb2_close_state {
 259         struct smbd_smb2_request *smb2req;
 260         struct files_struct *in_fsp;
 261         uint16_t in_flags;
 262         uint16_t out_flags;
 263         NTTIME out_creation_time;
 264         NTTIME out_last_access_time;
 265         NTTIME out_last_write_time;
 266         NTTIME out_change_time;
 267         uint64_t out_allocation_size;
 268         uint64_t out_end_of_file;
 269         uint32_t out_file_attributes;
 270 };
 271
 272 static void smbd_smb2_close_do(struct tevent_req *subreq);
 273
 274 static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
 275                                                struct tevent_context *ev,
 276                                                struct smbd_smb2_request *smb2req,
 277                                                struct files_struct *in_fsp,
 278                                                uint16_t in_flags)
 279 {
 280         struct tevent_req *req;
 281         struct smbd_smb2_close_state *state;
 282         NTSTATUS status;
 283
 284         req = tevent_req_create(mem_ctx, &state,
 285                                 struct smbd_smb2_close_state);
 286         if (req == NULL) {
 287                 return NULL;
 288         }
 289         state->smb2req = smb2req;
 290         state->in_fsp = in_fsp;
 291         state->in_flags = in_flags;
 292
 293         if (in_fsp->num_aio_requests != 0) {
 294
 295                 in_fsp->deferred_close = tevent_wait_send(in_fsp, ev);
 296                 if (tevent_req_nomem(in_fsp->deferred_close, req)) {
 297                         return tevent_req_post(req, ev);
 298                 }
 299                 tevent_req_set_callback(in_fsp->deferred_close,
 300                                         smbd_smb2_close_do, req);
 301                 return req;
 302         }
 303
 304         status = smbd_smb2_close(smb2req,
 305                                  state->in_fsp,
 306                                  state->in_flags,
 307                                  &state->out_flags,
 308                                  &state->out_creation_time,
 309                                  &state->out_last_access_time,
 310                                  &state->out_last_write_time,
 311                                  &state->out_change_time,
 312                                  &state->out_allocation_size,
 313                                  &state->out_end_of_file,
 314                                  &state->out_file_attributes);
 315         if (tevent_req_nterror(req, status)) {
 316                 return tevent_req_post(req, ev);
 317         }
 318
 319         tevent_req_done(req);
 320         return tevent_req_post(req, ev);
 321 }
 322
 323 static void smbd_smb2_close_do(struct tevent_req *subreq)
 324 {
 325         struct tevent_req *req = tevent_req_callback_data(
 326                 subreq, struct tevent_req);
 327         struct smbd_smb2_close_state *state = tevent_req_data(
 328                 req, struct smbd_smb2_close_state);
 329         NTSTATUS status;
 330         int ret;
 331
 332         ret = tevent_wait_recv(subreq);
 333         TALLOC_FREE(subreq);
 334         if (ret != 0) {
 335                 DEBUG(10, ("tevent_wait_recv returned %s\n",
 336                            strerror(ret)));
 337                 /*
 338                  * Continue anyway, this should never happen
 339                  */
 340         }
 341
 342         status = smbd_smb2_close(state->smb2req,
 343                                  state->in_fsp,
 344                                  state->in_flags,
 345                                  &state->out_flags,
 346                                  &state->out_creation_time,
 347                                  &state->out_last_access_time,
 348                                  &state->out_last_write_time,
 349                                  &state->out_change_time,
 350                                  &state->out_allocation_size,
 351                                  &state->out_end_of_file,
 352                                  &state->out_file_attributes);
 353         if (tevent_req_nterror(req, status)) {
 354                 return;
 355         }
 356         tevent_req_done(req);
 357 }
 358
 359 static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
 360                                      uint16_t *out_flags,
 361                                      NTTIME *out_creation_time,
 362                                      NTTIME *out_last_access_time,
 363                                      NTTIME *out_last_write_time,
 364                                      NTTIME *out_change_time,
 365                                      uint64_t *out_allocation_size,
 366                                      uint64_t *out_end_of_file,
 367                                      uint32_t *out_file_attributes)
 368 {
 369         struct smbd_smb2_close_state *state =
 370                 tevent_req_data(req,
 371                 struct smbd_smb2_close_state);
 372         NTSTATUS status;
 373
 374         if (tevent_req_is_nterror(req, &status)) {
 375                 tevent_req_received(req);
 376                 return status;
 377         }
 378
 379         *out_flags = state->out_flags;
 380         *out_creation_time = state->out_creation_time;
 381         *out_last_access_time = state->out_last_access_time;
 382         *out_last_write_time = state->out_last_write_time;
 383         *out_change_time = state->out_change_time;
 384         *out_allocation_size = state->out_allocation_size;
 385         *out_end_of_file = state->out_end_of_file;
 386         *out_file_attributes = state->out_file_attributes;
 387
 388         tevent_req_received(req);
 389         return NT_STATUS_OK;
 390 }