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         uint16_t in_flags;
  49         uint64_t in_file_id_persistent;
  50         uint64_t in_file_id_volatile;
  51         struct files_struct *in_fsp;
  52         NTSTATUS status;
  53         struct tevent_req *subreq;
  54
  55         status = smbd_smb2_request_verify_sizes(req, 0x18);
  56         if (!NT_STATUS_IS_OK(status)) {
  57                 return smbd_smb2_request_error(req, status);
  58         }
  59         inbody = SMBD_SMB2_IN_BODY_PTR(req);
  60
  61         in_flags                = SVAL(inbody, 0x02);
  62         in_file_id_persistent   = BVAL(inbody, 0x08);
  63         in_file_id_volatile     = BVAL(inbody, 0x10);
  64
  65         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
  66         if (in_fsp == NULL) {
  67                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  68         }
  69
  70         subreq = smbd_smb2_close_send(req, req->sconn->ev_ctx,
  71                                       req, in_fsp, in_flags);
  72         if (subreq == NULL) {
  73                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  74         }
  75         tevent_req_set_callback(subreq, smbd_smb2_request_close_done, req);
  76
  77         return smbd_smb2_request_pending_queue(req, subreq, 500);
  78 }
  79
  80 static void smbd_smb2_request_close_done(struct tevent_req *subreq)
  81 {
  82         struct smbd_smb2_request *req =
  83                 tevent_req_callback_data(subreq,
  84                 struct smbd_smb2_request);
  85         DATA_BLOB outbody;
  86         uint16_t out_flags;
  87         NTTIME out_creation_time;
  88         NTTIME out_last_access_time;
  89         NTTIME out_last_write_time;
  90         NTTIME out_change_time;
  91         uint64_t out_allocation_size;
  92         uint64_t out_end_of_file;
  93         uint32_t out_file_attributes;
  94         NTSTATUS status;
  95         NTSTATUS error;
  96
  97         status = smbd_smb2_close_recv(subreq,
  98                                       &out_flags,
  99                                       &out_creation_time,
 100                                       &out_last_access_time,
 101                                       &out_last_write_time,
 102                                       &out_change_time,
 103                                       &out_allocation_size,
 104                                       &out_end_of_file,
 105                                       &out_file_attributes);
 106         TALLOC_FREE(subreq);
 107         if (!NT_STATUS_IS_OK(status)) {
 108                 error = smbd_smb2_request_error(req, status);
 109                 if (!NT_STATUS_IS_OK(error)) {
 110                         smbd_server_connection_terminate(req->sconn,
 111                                                          nt_errstr(error));
 112                         return;
 113                 }
 114                 return;
 115         }
 116
 117         outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
 118         if (outbody.data == NULL) {
 119                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 120                 if (!NT_STATUS_IS_OK(error)) {
 121                         smbd_server_connection_terminate(req->sconn,
 122                                                          nt_errstr(error));
 123                         return;
 124                 }
 125                 return;
 126         }
 127
 128         SSVAL(outbody.data, 0x00, 0x3C);        /* struct size */
 129         SSVAL(outbody.data, 0x02, out_flags);
 130         SIVAL(outbody.data, 0x04, 0);           /* reserved */
 131         SBVAL(outbody.data, 0x08, out_creation_time);
 132         SBVAL(outbody.data, 0x10, out_last_access_time);
 133         SBVAL(outbody.data, 0x18, out_last_write_time);
 134         SBVAL(outbody.data, 0x20, out_change_time);
 135         SBVAL(outbody.data, 0x28, out_allocation_size);
 136         SBVAL(outbody.data, 0x30, out_end_of_file);
 137         SIVAL(outbody.data, 0x38, out_file_attributes);
 138
 139         error = smbd_smb2_request_done(req, outbody, NULL);
 140         if (!NT_STATUS_IS_OK(error)) {
 141                 smbd_server_connection_terminate(req->sconn,
 142                                                  nt_errstr(error));
 143                 return;
 144         }
 145 }
 146
 147 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
 148                                 struct files_struct *fsp,
 149                                 uint16_t in_flags,
 150                                 uint16_t *out_flags,
 151                                 NTTIME *out_creation_time,
 152                                 NTTIME *out_last_access_time,
 153                                 NTTIME *out_last_write_time,
 154                                 NTTIME *out_change_time,
 155                                 uint64_t *out_allocation_size,
 156                                 uint64_t *out_end_of_file,
 157                                 uint32_t *out_file_attributes)
 158 {
 159         NTSTATUS status;
 160         struct smb_request *smbreq;
 161         connection_struct *conn = req->tcon->compat;
 162         struct smb_filename *smb_fname = NULL;
 163         struct timespec mdate_ts, adate_ts, cdate_ts, create_date_ts;
 164         uint64_t allocation_size = 0;
 165         uint64_t file_size = 0;
 166         uint32_t dos_attrs = 0;
 167         uint16_t flags = 0;
 168         bool posix_open = false;
 169
 170         ZERO_STRUCT(create_date_ts);
 171         ZERO_STRUCT(adate_ts);
 172         ZERO_STRUCT(mdate_ts);
 173         ZERO_STRUCT(cdate_ts);
 174
 175         *out_flags = 0;
 176         *out_creation_time = 0;
 177         *out_last_access_time = 0;
 178         *out_last_write_time = 0;
 179         *out_change_time = 0;
 180         *out_allocation_size = 0;
 181         *out_end_of_file = 0;
 182         *out_file_attributes = 0;
 183
 184         DEBUG(10,("smbd_smb2_close: %s - %s\n",
 185                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 186
 187         smbreq = smbd_smb2_fake_smb_request(req);
 188         if (smbreq == NULL) {
 189                 return NT_STATUS_NO_MEMORY;
 190         }
 191
 192         posix_open = fsp->posix_open;
 193         status = copy_smb_filename(talloc_tos(),
 194                                 fsp->fsp_name,
 195                                 &smb_fname);
 196         if (!NT_STATUS_IS_OK(status)) {
 197                 return status;
 198         }
 199
 200         status = close_file(smbreq, fsp, NORMAL_CLOSE);
 201         if (!NT_STATUS_IS_OK(status)) {
 202                 DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
 203                          fsp_str_dbg(fsp), nt_errstr(status)));
 204                 return status;
 205         }
 206
 207         if (in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
 208                 int ret;
 209                 if (posix_open) {
 210                         ret = SMB_VFS_LSTAT(conn, smb_fname);
 211                 } else {
 212                         ret = SMB_VFS_STAT(conn, smb_fname);
 213                 }
 214                 if (ret == 0) {
 215                         flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
 216                         dos_attrs = dos_mode(conn, smb_fname);
 217                         mdate_ts = smb_fname->st.st_ex_mtime;
 218                         adate_ts = smb_fname->st.st_ex_atime;
 219                         create_date_ts = get_create_timespec(conn, NULL, smb_fname);
 220                         cdate_ts = get_change_timespec(conn, NULL, smb_fname);
 221
 222                         if (lp_dos_filetime_resolution(SNUM(conn))) {
 223                                 dos_filetime_timespec(&create_date_ts);
 224                                 dos_filetime_timespec(&mdate_ts);
 225                                 dos_filetime_timespec(&adate_ts);
 226                                 dos_filetime_timespec(&cdate_ts);
 227                         }
 228                         if (!(dos_attrs & FILE_ATTRIBUTE_DIRECTORY)) {
 229                                 file_size = get_file_size_stat(&smb_fname->st);
 230                         }
 231
 232                         allocation_size = SMB_VFS_GET_ALLOC_SIZE(conn, NULL, &smb_fname->st);
 233                 }
 234         }
 235
 236         *out_flags = flags;
 237
 238         round_timespec(conn->ts_res, &create_date_ts);
 239         unix_timespec_to_nt_time(out_creation_time, create_date_ts);
 240
 241         round_timespec(conn->ts_res, &adate_ts);
 242         unix_timespec_to_nt_time(out_last_access_time, adate_ts);
 243
 244         round_timespec(conn->ts_res, &mdate_ts);
 245         unix_timespec_to_nt_time(out_last_write_time, mdate_ts);
 246
 247         round_timespec(conn->ts_res, &cdate_ts);
 248         unix_timespec_to_nt_time(out_change_time, cdate_ts);
 249
 250         *out_allocation_size = allocation_size;
 251         *out_end_of_file = file_size;
 252         *out_file_attributes = dos_attrs;
 253
 254         return NT_STATUS_OK;
 255 }
 256
 257 struct smbd_smb2_close_state {
 258         struct smbd_smb2_request *smb2req;
 259         struct files_struct *in_fsp;
 260         uint16_t in_flags;
 261         uint16_t out_flags;
 262         NTTIME out_creation_time;
 263         NTTIME out_last_access_time;
 264         NTTIME out_last_write_time;
 265         NTTIME out_change_time;
 266         uint64_t out_allocation_size;
 267         uint64_t out_end_of_file;
 268         uint32_t out_file_attributes;
 269 };
 270
 271 static void smbd_smb2_close_do(struct tevent_req *subreq);
 272
 273 static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
 274                                                struct tevent_context *ev,
 275                                                struct smbd_smb2_request *smb2req,
 276                                                struct files_struct *in_fsp,
 277                                                uint16_t in_flags)
 278 {
 279         struct tevent_req *req;
 280         struct smbd_smb2_close_state *state;
 281         NTSTATUS status;
 282
 283         req = tevent_req_create(mem_ctx, &state,
 284                                 struct smbd_smb2_close_state);
 285         if (req == NULL) {
 286                 return NULL;
 287         }
 288         state->smb2req = smb2req;
 289         state->in_fsp = in_fsp;
 290         state->in_flags = in_flags;
 291
 292         if (in_fsp->num_aio_requests != 0) {
 293
 294                 in_fsp->deferred_close = tevent_wait_send(in_fsp, ev);
 295                 if (tevent_req_nomem(in_fsp->deferred_close, req)) {
 296                         return tevent_req_post(req, ev);
 297                 }
 298                 tevent_req_set_callback(in_fsp->deferred_close,
 299                                         smbd_smb2_close_do, req);
 300                 return req;
 301         }
 302
 303         status = smbd_smb2_close(smb2req,
 304                                  state->in_fsp,
 305                                  state->in_flags,
 306                                  &state->out_flags,
 307                                  &state->out_creation_time,
 308                                  &state->out_last_access_time,
 309                                  &state->out_last_write_time,
 310                                  &state->out_change_time,
 311                                  &state->out_allocation_size,
 312                                  &state->out_end_of_file,
 313                                  &state->out_file_attributes);
 314         if (tevent_req_nterror(req, status)) {
 315                 return tevent_req_post(req, ev);
 316         }
 317
 318         tevent_req_done(req);
 319         return tevent_req_post(req, ev);
 320 }
 321
 322 static void smbd_smb2_close_do(struct tevent_req *subreq)
 323 {
 324         struct tevent_req *req = tevent_req_callback_data(
 325                 subreq, struct tevent_req);
 326         struct smbd_smb2_close_state *state = tevent_req_data(
 327                 req, struct smbd_smb2_close_state);
 328         NTSTATUS status;
 329         int ret;
 330
 331         ret = tevent_wait_recv(subreq);
 332         TALLOC_FREE(subreq);
 333         if (ret != 0) {
 334                 DEBUG(10, ("tevent_wait_recv returned %s\n",
 335                            strerror(ret)));
 336                 /*
 337                  * Continue anyway, this should never happen
 338                  */
 339         }
 340
 341         status = smbd_smb2_close(state->smb2req,
 342                                  state->in_fsp,
 343                                  state->in_flags,
 344                                  &state->out_flags,
 345                                  &state->out_creation_time,
 346                                  &state->out_last_access_time,
 347                                  &state->out_last_write_time,
 348                                  &state->out_change_time,
 349                                  &state->out_allocation_size,
 350                                  &state->out_end_of_file,
 351                                  &state->out_file_attributes);
 352         if (tevent_req_nterror(req, status)) {
 353                 return;
 354         }
 355         tevent_req_done(req);
 356 }
 357
 358 static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
 359                                      uint16_t *out_flags,
 360                                      NTTIME *out_creation_time,
 361                                      NTTIME *out_last_access_time,
 362                                      NTTIME *out_last_write_time,
 363                                      NTTIME *out_change_time,
 364                                      uint64_t *out_allocation_size,
 365                                      uint64_t *out_end_of_file,
 366                                      uint32_t *out_file_attributes)
 367 {
 368         struct smbd_smb2_close_state *state =
 369                 tevent_req_data(req,
 370                 struct smbd_smb2_close_state);
 371         NTSTATUS status;
 372
 373         if (tevent_req_is_nterror(req, &status)) {
 374                 tevent_req_received(req);
 375                 return status;
 376         }
 377
 378         *out_flags = state->out_flags;
 379         *out_creation_time = state->out_creation_time;
 380         *out_last_access_time = state->out_last_access_time;
 381         *out_last_write_time = state->out_last_write_time;
 382         *out_change_time = state->out_change_time;
 383         *out_allocation_size = state->out_allocation_size;
 384         *out_end_of_file = state->out_end_of_file;
 385         *out_file_attributes = state->out_file_attributes;
 386
 387         tevent_req_received(req);
 388         return NT_STATUS_OK;
 389 }