source3/torture/test_cleanup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Test cleanup behaviour
   4    Copyright (C) Volker Lendecke 2011
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "locking/proto.h"
  22 #include "torture/proto.h"
  23 #include "system/filesys.h"
  24 #include "system/select.h"
  25 #include "libsmb/libsmb.h"
  26 #include "libcli/smb/smbXcli_base.h"
  27 #include "libcli/security/security.h"
  28 #include "librpc/gen_ndr/open_files.h"
  29
  30 bool run_cleanup1(int dummy)
  31 {
  32         struct cli_state *cli;
  33         const char *fname = "\\cleanup1";
  34         uint16_t fnum;
  35         NTSTATUS status;
  36
  37         printf("CLEANUP1: Checking that a conflicting share mode is cleaned "
  38                "up\n");
  39
  40         if (!torture_open_connection(&cli, 0)) {
  41                 return false;
  42         }
  43         status = cli_openx(cli, fname, O_RDWR|O_CREAT, DENY_ALL, &fnum);
  44         if (!NT_STATUS_IS_OK(status)) {
  45                 printf("open of %s failed (%s)\n", fname, nt_errstr(status));
  46                 return false;
  47         }
  48         status = smbXcli_conn_samba_suicide(cli->conn, 1);
  49         if (!NT_STATUS_IS_OK(status)) {
  50                 printf("smbXcli_conn_samba_suicide failed: %s\n",
  51                        nt_errstr(status));
  52                 return false;
  53         }
  54
  55         if (!torture_open_connection(&cli, 1)) {
  56                 return false;
  57         }
  58         status = cli_ntcreate(
  59                 cli, fname, 0,
  60                 FILE_GENERIC_READ|FILE_GENERIC_WRITE|DELETE_ACCESS,
  61                 FILE_ATTRIBUTE_NORMAL,
  62                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  63                 FILE_OPEN, FILE_DELETE_ON_CLOSE, 0, &fnum);
  64         if (!NT_STATUS_IS_OK(status)) {
  65                 printf("2nd open of %s failed (%s)\n", fname,
  66                        nt_errstr(status));
  67                 return false;
  68         }
  69         cli_close(cli, fnum);
  70
  71         torture_close_connection(cli);
  72         return NT_STATUS_IS_OK(status);
  73 }
  74
  75 bool run_cleanup2(int dummy)
  76 {
  77         struct cli_state *cli1, *cli2;
  78         const char *fname = "\\cleanup2";
  79         uint16_t fnum1, fnum2;
  80         NTSTATUS status;
  81         char buf;
  82
  83         printf("CLEANUP2: Checking that a conflicting brlock is cleaned up\n");
  84
  85         if (!torture_open_connection(&cli1, 0)) {
  86                 return false;
  87         }
  88         status = cli_ntcreate(
  89                 cli1, fname, 0, FILE_GENERIC_READ|FILE_GENERIC_WRITE,
  90                 FILE_ATTRIBUTE_NORMAL,
  91                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  92                 FILE_OVERWRITE_IF, 0, 0, &fnum1);
  93         if (!NT_STATUS_IS_OK(status)) {
  94                 printf("open of %s failed (%s)\n", fname, nt_errstr(status));
  95                 return false;
  96         }
  97         status = cli_lock32(cli1, fnum1, 0, 1, 0, WRITE_LOCK);
  98         if (!NT_STATUS_IS_OK(status)) {
  99                 printf("lock failed (%s)\n", nt_errstr(status));
 100                 return false;
 101         }
 102
 103         /*
 104          * Check the file is indeed locked
 105          */
 106         if (!torture_open_connection(&cli2, 0)) {
 107                 return false;
 108         }
 109         status = cli_ntcreate(
 110                 cli2, fname, 0, FILE_GENERIC_READ|FILE_GENERIC_WRITE,
 111                 FILE_ATTRIBUTE_NORMAL,
 112                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 113                 FILE_OPEN, 0, 0, &fnum2);
 114         if (!NT_STATUS_IS_OK(status)) {
 115                 printf("open of %s failed (%s)\n", fname, nt_errstr(status));
 116                 return false;
 117         }
 118         buf = 'x';
 119         status = cli_smbwrite(cli2, fnum2, &buf, 0, 1, NULL);
 120         if (!NT_STATUS_EQUAL(status, NT_STATUS_FILE_LOCK_CONFLICT)) {
 121                 printf("write succeeded\n");
 122                 return false;
 123         }
 124
 125         /*
 126          * Kill the lock holder
 127          */
 128         status = smbXcli_conn_samba_suicide(cli1->conn, 1);
 129         if (!NT_STATUS_IS_OK(status)) {
 130                 printf("smbXcli_conn_samba_suicide failed: %s\n",
 131                        nt_errstr(status));
 132                 return false;
 133         }
 134
 135         /*
 136          * Right now we don't clean up immediately. Re-open the 2nd connection.
 137          */
 138 #if 1
 139         cli_shutdown(cli2);
 140         if (!torture_open_connection(&cli2, 0)) {
 141                 return false;
 142         }
 143         status = cli_ntcreate(
 144                 cli2, fname, 0, FILE_GENERIC_READ|FILE_GENERIC_WRITE,
 145                 FILE_ATTRIBUTE_NORMAL,
 146                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 147                 FILE_OPEN, 0, 0, &fnum2);
 148         if (!NT_STATUS_IS_OK(status)) {
 149                 printf("open of %s failed (%s)\n", fname, nt_errstr(status));
 150                 return false;
 151         }
 152 #endif
 153         status = cli_smbwrite(cli2, fnum2, &buf, 0, 1, NULL);
 154         if (!NT_STATUS_IS_OK(status)) {
 155                 printf("write failed: %s\n", nt_errstr(status));
 156                 return false;
 157         }
 158         return true;
 159 }
 160
 161 static bool create_stale_share_mode_entry(const char *fname,
 162                                           struct file_id *p_id)
 163 {
 164         struct cli_state *cli;
 165         uint16_t fnum;
 166         NTSTATUS status;
 167         SMB_STRUCT_STAT sbuf;
 168         struct file_id id;
 169
 170         if (!torture_open_connection(&cli, 0)) {
 171                 return false;
 172         }
 173
 174         status = torture_setup_unix_extensions(cli);
 175         if (!NT_STATUS_IS_OK(status)) {
 176                 printf("torture_setup_unix_extensions failed: %s\n",
 177                        nt_errstr(status));
 178                 return false;
 179         }
 180         status = cli_openx(cli, fname, O_RDWR|O_CREAT, DENY_ALL, &fnum);
 181         if (!NT_STATUS_IS_OK(status)) {
 182                 printf("open of %s failed (%s)\n", fname, nt_errstr(status));
 183                 return false;
 184         }
 185         status = cli_posix_stat(cli, fname, &sbuf);
 186         if (!NT_STATUS_IS_OK(status)) {
 187                 printf("cli_posix_stat failed: %s\n", nt_errstr(status));
 188                 return false;
 189         }
 190         status = smbXcli_conn_samba_suicide(cli->conn, 1);
 191         if (!NT_STATUS_IS_OK(status)) {
 192                 printf("smbXcli_conn_samba_suicide failed: %s\n",
 193                        nt_errstr(status));
 194                 return false;
 195         }
 196
 197         id.devid = sbuf.st_ex_rdev;
 198         id.inode = sbuf.st_ex_ino;
 199         id.extid = 0;
 200
 201         poll(NULL, 0, 1000);
 202
 203         *p_id = id;
 204         return true;
 205 }
 206
 207 static bool corrupt_dummy(struct share_mode_data *d)
 208 {
 209         return true;
 210 }
 211
 212 static bool invalidate_sharemode(struct share_mode_data *d)
 213 {
 214         d->share_modes[0].op_type =
 215                 OPLOCK_EXCLUSIVE|OPLOCK_BATCH|OPLOCK_LEVEL_II;
 216         d->modified = true;
 217         return true;
 218 }
 219
 220 static bool duplicate_entry(struct share_mode_data *d, int i)
 221 {
 222         struct share_mode_entry *tmp;
 223
 224         if (i >= d->num_share_modes) {
 225                 return false;
 226         }
 227
 228         tmp = talloc_realloc(d, d->share_modes, struct share_mode_entry,
 229                              d->num_share_modes + 1);
 230         if (tmp == NULL) {
 231                 return false;
 232         }
 233         d->share_modes = tmp;
 234         d->num_share_modes += 1;
 235         d->share_modes[d->num_share_modes-1] = d->share_modes[i];
 236         d->modified = true;
 237         return true;
 238 }
 239
 240 static bool create_duplicate_batch(struct share_mode_data *d)
 241 {
 242         if (d->num_share_modes != 1) {
 243                 return false;
 244         }
 245         d->share_modes[0].op_type = OPLOCK_BATCH;
 246         if (!duplicate_entry(d, 0)) {
 247                 return false;
 248         }
 249         return true;
 250 }
 251
 252 struct corruption_fns {
 253         bool (*fn)(struct share_mode_data *d);
 254         const char *descr;
 255 };
 256
 257 bool run_cleanup3(int dummy)
 258 {
 259         struct cli_state *cli;
 260         const char *fname = "cleanup3";
 261         uint16_t fnum;
 262         NTSTATUS status;
 263         struct share_mode_lock *lck;
 264         struct file_id id;
 265         size_t i;
 266
 267         struct corruption_fns fns[] = {
 268                 { corrupt_dummy, "no corruption" },
 269                 { invalidate_sharemode, "invalidate_sharemode" },
 270                 { create_duplicate_batch, "create_duplicate_batch" },
 271         };
 272
 273         printf("CLEANUP3: Checking that a share mode is cleaned up on "
 274                "conflict\n");
 275
 276         for (i=0; i<ARRAY_SIZE(fns); i++) {
 277
 278                 printf("testing %s\n", fns[i].descr);
 279
 280                 if (!create_stale_share_mode_entry(fname, &id)) {
 281                         printf("create_stale_entry failed\n");
 282                         return false;
 283                 }
 284
 285                 printf("%d %d %d\n", (int)id.devid, (int)id.inode,
 286                        (int)id.extid);
 287
 288                 if (!locking_init()) {
 289                         printf("locking_init failed\n");
 290                         return false;
 291                 }
 292                 lck = get_existing_share_mode_lock(talloc_tos(), id);
 293                 if (lck == NULL) {
 294                         printf("get_existing_share_mode_lock failed\n");
 295                         return false;
 296                 }
 297                 if (lck->data->num_share_modes != 1) {
 298                         printf("get_existing_share_mode_lock did clean up\n");
 299                         return false;
 300                 }
 301
 302                 fns[i].fn(lck->data);
 303
 304                 TALLOC_FREE(lck);
 305
 306                 if (!torture_open_connection(&cli, 0)) {
 307                         return false;
 308                 }
 309                 status = cli_openx(cli, fname, O_RDWR|O_CREAT, DENY_ALL,
 310                                    &fnum);
 311                 if (!NT_STATUS_IS_OK(status)) {
 312                         printf("open of %s failed (%s)\n", fname,
 313                                nt_errstr(status));
 314                         return false;
 315                 }
 316                 lck = get_existing_share_mode_lock(talloc_tos(), id);
 317                 if (lck == NULL) {
 318                         printf("get_existing_share_mode_lock failed\n");
 319                         return false;
 320                 }
 321                 if (lck->data->num_share_modes != 1) {
 322                         printf("conflicting open did not clean up\n");
 323                         return false;
 324                 }
 325                 TALLOC_FREE(lck);
 326
 327                 torture_close_connection(cli);
 328         }
 329
 330         return true;
 331 }
 332
 333 bool run_cleanup4(int dummy)
 334 {
 335         struct cli_state *cli1, *cli2;
 336         const char *fname = "\\cleanup4";
 337         uint16_t fnum1, fnum2;
 338         NTSTATUS status;
 339
 340         printf("CLEANUP4: Checking that a conflicting share mode is cleaned "
 341                "up\n");
 342
 343         if (!torture_open_connection(&cli1, 0)) {
 344                 return false;
 345         }
 346         if (!torture_open_connection(&cli2, 0)) {
 347                 return false;
 348         }
 349
 350         status = cli_ntcreate(
 351                 cli1, fname, 0,
 352                 FILE_GENERIC_READ|DELETE_ACCESS,
 353                 FILE_ATTRIBUTE_NORMAL,
 354                 FILE_SHARE_READ|FILE_SHARE_DELETE,
 355                 FILE_OVERWRITE_IF, 0, 0, &fnum1);
 356         if (!NT_STATUS_IS_OK(status)) {
 357                 printf("creating file failed: %s\n",
 358                        nt_errstr(status));
 359                 return false;
 360         }
 361
 362         status = cli_ntcreate(
 363                 cli2, fname, 0,
 364                 FILE_GENERIC_READ|DELETE_ACCESS,
 365                 FILE_ATTRIBUTE_NORMAL,
 366                 FILE_SHARE_READ|FILE_SHARE_DELETE,
 367                 FILE_OPEN, 0, 0, &fnum2);
 368         if (!NT_STATUS_IS_OK(status)) {
 369                 printf("opening file 1st time failed: %s\n",
 370                        nt_errstr(status));
 371                 return false;
 372         }
 373
 374         status = smbXcli_conn_samba_suicide(cli1->conn, 1);
 375         if (!NT_STATUS_IS_OK(status)) {
 376                 printf("smbXcli_conn_samba_suicide failed: %s\n",
 377                        nt_errstr(status));
 378                 return false;
 379         }
 380
 381         /*
 382          * The next open will conflict with both opens above. The first open
 383          * above will be correctly cleaned up. A bug in smbd iterating over
 384          * the share mode array made it skip the share conflict check for the
 385          * second open. Trigger this bug.
 386          */
 387
 388         status = cli_ntcreate(
 389                 cli2, fname, 0,
 390                 FILE_GENERIC_WRITE|DELETE_ACCESS,
 391                 FILE_ATTRIBUTE_NORMAL,
 392                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 393                 FILE_OPEN, 0, 0, &fnum2);
 394         if (!NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
 395                 printf("opening file 2nd time returned: %s\n",
 396                        nt_errstr(status));
 397                 return false;
 398         }
 399
 400         return true;
 401 }