SQLite

Check-in [eb8718006c]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Add a test for the outcome of a process crash within an xWrite VFS method call.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | batch-atomic-write
Files: files | file ages | folders
SHA3-256: eb8718006cb23ba9304da5c30d19863d688495f0eaae3794c5ad870e481866f8
User & Date: dan 2017-07-22 20:12:31.931
Context
2017-07-27
18:34
Do not set device-capabilities flags SEQUENTIAL or SAFE_APPEND for f2fs file-systems. (check-in: 4477e60cd8 user: dan tags: batch-atomic-write)
2017-07-22
20:12
Add a test for the outcome of a process crash within an xWrite VFS method call. (check-in: eb8718006c user: dan tags: batch-atomic-write)
16:58
Add the "atomic-batch-write" permutation to permutations.test. This permutation fails if not run on a file-system that supports atomic-batch-writes. (check-in: 9f1b83fae9 user: dan tags: batch-atomic-write)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/test6.c.
732
733
734
735
736
737
738

739
740
741
742
743
744
745
    { "atomic8k",            SQLITE_IOCAP_ATOMIC8K              },
    { "atomic16k",           SQLITE_IOCAP_ATOMIC16K             },
    { "atomic32k",           SQLITE_IOCAP_ATOMIC32K             },
    { "atomic64k",           SQLITE_IOCAP_ATOMIC64K             },
    { "sequential",          SQLITE_IOCAP_SEQUENTIAL            },
    { "safe_append",         SQLITE_IOCAP_SAFE_APPEND           },
    { "powersafe_overwrite", SQLITE_IOCAP_POWERSAFE_OVERWRITE   },

    { 0, 0 }
  };

  int i;
  int iDc = 0;
  int iSectorSize = 0;
  int setSectorsize = 0;







>







732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
    { "atomic8k",            SQLITE_IOCAP_ATOMIC8K              },
    { "atomic16k",           SQLITE_IOCAP_ATOMIC16K             },
    { "atomic32k",           SQLITE_IOCAP_ATOMIC32K             },
    { "atomic64k",           SQLITE_IOCAP_ATOMIC64K             },
    { "sequential",          SQLITE_IOCAP_SEQUENTIAL            },
    { "safe_append",         SQLITE_IOCAP_SAFE_APPEND           },
    { "powersafe_overwrite", SQLITE_IOCAP_POWERSAFE_OVERWRITE   },
    { "batch-atomic",        SQLITE_IOCAP_BATCH_ATOMIC          },
    { 0, 0 }
  };

  int i;
  int iDc = 0;
  int iSectorSize = 0;
  int setSectorsize = 0;
972
973
974
975
976
977
978
979























980
981
982
983
984
985
986

  if( processDevSymArgs(interp, objc-1, &objv[1], &iDc, &iSectorSize) ){
    return TCL_ERROR;
  }
  devsym_register(iDc, iSectorSize);

  return TCL_OK;
























}

/*
** tclcmd: unregister_devsim
*/
static int SQLITE_TCLAPI dsUnregisterObjCmd(
  void * clientData,







|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010

  if( processDevSymArgs(interp, objc-1, &objv[1], &iDc, &iSectorSize) ){
    return TCL_ERROR;
  }
  devsym_register(iDc, iSectorSize);

  return TCL_OK;
}

/*
** tclcmd: sqlite3_crash_on_write N
*/
static int SQLITE_TCLAPI writeCrashObjCmd(
  void * clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
  void devsym_crash_on_write(int);
  int nWrite = 0;

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "NWRITE");
    return TCL_ERROR;
  }
  if( Tcl_GetIntFromObj(interp, objv[1], &nWrite) ){
    return TCL_ERROR;
  }

  devsym_crash_on_write(nWrite);
  return TCL_OK;
}

/*
** tclcmd: unregister_devsim
*/
static int SQLITE_TCLAPI dsUnregisterObjCmd(
  void * clientData,
1064
1065
1066
1067
1068
1069
1070

1071
1072
1073
1074
1075
1076
1077
1078
*/
int Sqlitetest6_Init(Tcl_Interp *interp){
#ifndef SQLITE_OMIT_DISKIO
  Tcl_CreateObjCommand(interp, "sqlite3_crash_enable", crashEnableCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_crashparams", crashParamsObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_crash_now", crashNowCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_simulate_device", devSymObjCmd, 0, 0);

  Tcl_CreateObjCommand(interp, "unregister_devsim", dsUnregisterObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "register_jt_vfs", jtObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "unregister_jt_vfs", jtUnregisterObjCmd, 0, 0);
#endif
  return TCL_OK;
}

#endif /* SQLITE_TEST */







>








1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
*/
int Sqlitetest6_Init(Tcl_Interp *interp){
#ifndef SQLITE_OMIT_DISKIO
  Tcl_CreateObjCommand(interp, "sqlite3_crash_enable", crashEnableCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_crashparams", crashParamsObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_crash_now", crashNowCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_simulate_device", devSymObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "sqlite3_crash_on_write", writeCrashObjCmd,0,0);
  Tcl_CreateObjCommand(interp, "unregister_devsim", dsUnregisterObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "register_jt_vfs", jtObjCmd, 0, 0);
  Tcl_CreateObjCommand(interp, "unregister_jt_vfs", jtUnregisterObjCmd, 0, 0);
#endif
  return TCL_OK;
}

#endif /* SQLITE_TEST */
Changes to src/test_devsym.c.
24
25
26
27
28
29
30

31
32
33
34
35
36
37
*/
#define DEVSYM_MAX_PATHNAME 512

/*
** Name used to identify this VFS.
*/
#define DEVSYM_VFS_NAME "devsym"


typedef struct devsym_file devsym_file;
struct devsym_file {
  sqlite3_file base;
  sqlite3_file *pReal;
};








>







24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
*/
#define DEVSYM_MAX_PATHNAME 512

/*
** Name used to identify this VFS.
*/
#define DEVSYM_VFS_NAME "devsym"
#define WRITECRASH_NAME "writecrash"

typedef struct devsym_file devsym_file;
struct devsym_file {
  sqlite3_file base;
  sqlite3_file *pReal;
};

68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127

128
129
130
131
132
133
134
135
136
static void (*devsymDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
static void devsymDlClose(sqlite3_vfs*, void*);
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
static int devsymRandomness(sqlite3_vfs*, int nByte, char *zOut);
static int devsymSleep(sqlite3_vfs*, int microseconds);
static int devsymCurrentTime(sqlite3_vfs*, double*);

static sqlite3_vfs devsym_vfs = {
  2,                     /* iVersion */
  sizeof(devsym_file),      /* szOsFile */
  DEVSYM_MAX_PATHNAME,      /* mxPathname */
  0,                     /* pNext */
  DEVSYM_VFS_NAME,          /* zName */
  0,                     /* pAppData */
  devsymOpen,               /* xOpen */
  devsymDelete,             /* xDelete */
  devsymAccess,             /* xAccess */
  devsymFullPathname,       /* xFullPathname */
#ifndef SQLITE_OMIT_LOAD_EXTENSION
  devsymDlOpen,             /* xDlOpen */
  devsymDlError,            /* xDlError */
  devsymDlSym,              /* xDlSym */
  devsymDlClose,            /* xDlClose */
#else
  0,                        /* xDlOpen */
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */
  0,                        /* xGetLastError */
  0                         /* xCurrentTimeInt64 */
};

static sqlite3_io_methods devsym_io_methods = {
  2,                                /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */
  devsymTruncate,                   /* xTruncate */
  devsymSync,                       /* xSync */
  devsymFileSize,                   /* xFileSize */
  devsymLock,                       /* xLock */
  devsymUnlock,                     /* xUnlock */
  devsymCheckReservedLock,          /* xCheckReservedLock */
  devsymFileControl,                /* xFileControl */
  devsymSectorSize,                 /* xSectorSize */
  devsymDeviceCharacteristics,      /* xDeviceCharacteristics */
  devsymShmMap,                     /* xShmMap */
  devsymShmLock,                    /* xShmLock */
  devsymShmBarrier,                 /* xShmBarrier */
  devsymShmUnmap                    /* xShmUnmap */
};

struct DevsymGlobal {
  sqlite3_vfs *pVfs;
  int iDeviceChar;
  int iSectorSize;

};
struct DevsymGlobal g = {0, 0, 512};

/*
** Close an devsym-file.
*/
static int devsymClose(sqlite3_file *pFile){
  devsym_file *p = (devsym_file *)pFile;
  sqlite3OsClose(p->pReal);







<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<




>

|







69
70
71
72
73
74
75

















































76
77
78
79
80
81
82
83
84
85
86
87
88
89
static void (*devsymDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
static void devsymDlClose(sqlite3_vfs*, void*);
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
static int devsymRandomness(sqlite3_vfs*, int nByte, char *zOut);
static int devsymSleep(sqlite3_vfs*, int microseconds);
static int devsymCurrentTime(sqlite3_vfs*, double*);


















































struct DevsymGlobal {
  sqlite3_vfs *pVfs;
  int iDeviceChar;
  int iSectorSize;
  int nWriteCrash;
};
struct DevsymGlobal g = {0, 0, 512, 0};

/*
** Close an devsym-file.
*/
static int devsymClose(sqlite3_file *pFile){
  devsym_file *p = (devsym_file *)pFile;
  sqlite3OsClose(p->pReal);
267
268
269
270
271
272
273




















274
275
276
277
278
279
280
static int devsymOpen(
  sqlite3_vfs *pVfs,
  const char *zName,
  sqlite3_file *pFile,
  int flags,
  int *pOutFlags
){




















  int rc;
  devsym_file *p = (devsym_file *)pFile;
  p->pReal = (sqlite3_file *)&p[1];
  rc = sqlite3OsOpen(g.pVfs, zName, p->pReal, flags, pOutFlags);
  if( p->pReal->pMethods ){
    pFile->pMethods = &devsym_io_methods;
  }







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
static int devsymOpen(
  sqlite3_vfs *pVfs,
  const char *zName,
  sqlite3_file *pFile,
  int flags,
  int *pOutFlags
){
static sqlite3_io_methods devsym_io_methods = {
  2,                                /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */
  devsymTruncate,                   /* xTruncate */
  devsymSync,                       /* xSync */
  devsymFileSize,                   /* xFileSize */
  devsymLock,                       /* xLock */
  devsymUnlock,                     /* xUnlock */
  devsymCheckReservedLock,          /* xCheckReservedLock */
  devsymFileControl,                /* xFileControl */
  devsymSectorSize,                 /* xSectorSize */
  devsymDeviceCharacteristics,      /* xDeviceCharacteristics */
  devsymShmMap,                     /* xShmMap */
  devsymShmLock,                    /* xShmLock */
  devsymShmBarrier,                 /* xShmBarrier */
  devsymShmUnmap                    /* xShmUnmap */
};

  int rc;
  devsym_file *p = (devsym_file *)pFile;
  p->pReal = (sqlite3_file *)&p[1];
  rc = sqlite3OsOpen(g.pVfs, zName, p->pReal, flags, pOutFlags);
  if( p->pReal->pMethods ){
    pFile->pMethods = &devsym_io_methods;
  }
368
369
370
371
372
373
374






375

376




























































































































377
378
379
380
381

382
383
384

385

386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405











406
/*
** Return the current time as a Julian Day number in *pTimeOut.
*/
static int devsymCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
  return g.pVfs->xCurrentTime(g.pVfs, pTimeOut);
}









/*




























































































































** This procedure registers the devsym vfs with SQLite. If the argument is
** true, the devsym vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
void devsym_register(int iDeviceChar, int iSectorSize){

  if( g.pVfs==0 ){
    g.pVfs = sqlite3_vfs_find(0);
    devsym_vfs.szOsFile += g.pVfs->szOsFile;

    sqlite3_vfs_register(&devsym_vfs, 0);

  }
  if( iDeviceChar>=0 ){
    g.iDeviceChar = iDeviceChar;
  }else{
    g.iDeviceChar = 0;
  }
  if( iSectorSize>=0 ){
    g.iSectorSize = iSectorSize;
  }else{
    g.iSectorSize = 512;
  }
}

void devsym_unregister(){
  sqlite3_vfs_unregister(&devsym_vfs);
  g.pVfs = 0;
  g.iDeviceChar = 0;
  g.iSectorSize = 0;
}












#endif







>
>
>
>
>
>
|
>

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>





>



>

>




















>
>
>
>
>
>
>
>
>
>
>

341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
/*
** Return the current time as a Julian Day number in *pTimeOut.
*/
static int devsymCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
  return g.pVfs->xCurrentTime(g.pVfs, pTimeOut);
}

/*
** Return the sector-size in bytes for an writecrash-file.
*/
static int writecrashSectorSize(sqlite3_file *pFile){
  devsym_file *p = (devsym_file *)pFile;
  return sqlite3OsSectorSize(p->pReal);
}

/*
** Return the device characteristic flags supported by an writecrash-file.
*/
static int writecrashDeviceCharacteristics(sqlite3_file *pFile){
  devsym_file *p = (devsym_file *)pFile;
  return sqlite3OsDeviceCharacteristics(p->pReal);
}

/*
** Write data to an writecrash-file.
*/
static int writecrashWrite(
  sqlite3_file *pFile, 
  const void *zBuf, 
  int iAmt, 
  sqlite_int64 iOfst
){
  devsym_file *p = (devsym_file *)pFile;
  if( g.nWriteCrash>0 ){
    g.nWriteCrash--;
    if( g.nWriteCrash==0 ) abort();
  }
  return sqlite3OsWrite(p->pReal, zBuf, iAmt, iOfst);
}

/*
** Open an writecrash file handle.
*/
static int writecrashOpen(
  sqlite3_vfs *pVfs,
  const char *zName,
  sqlite3_file *pFile,
  int flags,
  int *pOutFlags
){
static sqlite3_io_methods writecrash_io_methods = {
  2,                                /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  writecrashWrite,                  /* xWrite */
  devsymTruncate,                   /* xTruncate */
  devsymSync,                       /* xSync */
  devsymFileSize,                   /* xFileSize */
  devsymLock,                       /* xLock */
  devsymUnlock,                     /* xUnlock */
  devsymCheckReservedLock,          /* xCheckReservedLock */
  devsymFileControl,                /* xFileControl */
  writecrashSectorSize,             /* xSectorSize */
  writecrashDeviceCharacteristics,  /* xDeviceCharacteristics */
  devsymShmMap,                     /* xShmMap */
  devsymShmLock,                    /* xShmLock */
  devsymShmBarrier,                 /* xShmBarrier */
  devsymShmUnmap                    /* xShmUnmap */
};

  int rc;
  devsym_file *p = (devsym_file *)pFile;
  p->pReal = (sqlite3_file *)&p[1];
  rc = sqlite3OsOpen(g.pVfs, zName, p->pReal, flags, pOutFlags);
  if( p->pReal->pMethods ){
    pFile->pMethods = &writecrash_io_methods;
  }
  return rc;
}

static sqlite3_vfs devsym_vfs = {
  2,                     /* iVersion */
  sizeof(devsym_file),      /* szOsFile */
  DEVSYM_MAX_PATHNAME,      /* mxPathname */
  0,                     /* pNext */
  DEVSYM_VFS_NAME,          /* zName */
  0,                     /* pAppData */
  devsymOpen,               /* xOpen */
  devsymDelete,             /* xDelete */
  devsymAccess,             /* xAccess */
  devsymFullPathname,       /* xFullPathname */
#ifndef SQLITE_OMIT_LOAD_EXTENSION
  devsymDlOpen,             /* xDlOpen */
  devsymDlError,            /* xDlError */
  devsymDlSym,              /* xDlSym */
  devsymDlClose,            /* xDlClose */
#else
  0,                        /* xDlOpen */
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */
  0,                        /* xGetLastError */
  0                         /* xCurrentTimeInt64 */
};

static sqlite3_vfs writecrash_vfs = {
  2,                     /* iVersion */
  sizeof(devsym_file),      /* szOsFile */
  DEVSYM_MAX_PATHNAME,      /* mxPathname */
  0,                     /* pNext */
  WRITECRASH_NAME,          /* zName */
  0,                     /* pAppData */
  writecrashOpen,           /* xOpen */
  devsymDelete,             /* xDelete */
  devsymAccess,             /* xAccess */
  devsymFullPathname,       /* xFullPathname */
#ifndef SQLITE_OMIT_LOAD_EXTENSION
  devsymDlOpen,             /* xDlOpen */
  devsymDlError,            /* xDlError */
  devsymDlSym,              /* xDlSym */
  devsymDlClose,            /* xDlClose */
#else
  0,                        /* xDlOpen */
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */
  0,                        /* xGetLastError */
  0                         /* xCurrentTimeInt64 */
};


/*
** This procedure registers the devsym vfs with SQLite. If the argument is
** true, the devsym vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
void devsym_register(int iDeviceChar, int iSectorSize){

  if( g.pVfs==0 ){
    g.pVfs = sqlite3_vfs_find(0);
    devsym_vfs.szOsFile += g.pVfs->szOsFile;
    writecrash_vfs.szOsFile += g.pVfs->szOsFile;
    sqlite3_vfs_register(&devsym_vfs, 0);
    sqlite3_vfs_register(&writecrash_vfs, 0);
  }
  if( iDeviceChar>=0 ){
    g.iDeviceChar = iDeviceChar;
  }else{
    g.iDeviceChar = 0;
  }
  if( iSectorSize>=0 ){
    g.iSectorSize = iSectorSize;
  }else{
    g.iSectorSize = 512;
  }
}

void devsym_unregister(){
  sqlite3_vfs_unregister(&devsym_vfs);
  g.pVfs = 0;
  g.iDeviceChar = 0;
  g.iSectorSize = 0;
}

void devsym_crash_on_write(int nWrite){
  if( g.pVfs==0 ){
    g.pVfs = sqlite3_vfs_find(0);
    devsym_vfs.szOsFile += g.pVfs->szOsFile;
    writecrash_vfs.szOsFile += g.pVfs->szOsFile;
    sqlite3_vfs_register(&devsym_vfs, 0);
    sqlite3_vfs_register(&writecrash_vfs, 0);
  }
  g.nWriteCrash = nWrite;
}

#endif
Changes to test/tester.tcl.
1586
1587
1588
1589
1590
1591
1592
















































1593
1594
1595
1596
1597
1598
1599
    puts $f $tclbody
  }
  if {[string length $sql]>0} {
    puts $f "db eval {"
    puts $f   "$sql"
    puts $f "}"
  }
















































  close $f
  set r [catch {
    exec [info nameofexec] crash.tcl >@stdout
  } msg]

  # Windows/ActiveState TCL returns a slightly different
  # error message.  We map that to the expected message







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
    puts $f $tclbody
  }
  if {[string length $sql]>0} {
    puts $f "db eval {"
    puts $f   "$sql"
    puts $f "}"
  }
  close $f
  set r [catch {
    exec [info nameofexec] crash.tcl >@stdout
  } msg]

  # Windows/ActiveState TCL returns a slightly different
  # error message.  We map that to the expected message
  # so that we don't have to change all of the test
  # cases.
  if {$::tcl_platform(platform)=="windows"} {
    if {$msg=="child killed: unknown signal"} {
      set msg "child process exited abnormally"
    }
  }

  lappend r $msg
}

#   crash_on_write ?-devchar DEVCHAR? CRASHDELAY SQL
#
proc crash_on_write {args} {

  set nArg [llength $args]
  if {$nArg<2 || $nArg%2} {
    error "bad args: $args"
  }
  set zSql [lindex $args end]
  set nDelay [lindex $args end-1]

  set devchar {}
  for {set ii 0} {$ii < $nArg-2} {incr ii 2} {
    set opt [lindex $args $ii]
    switch -- [lindex $args $ii] {
      -devchar {
        set devchar [lindex $args [expr $ii+1]]
      }

      default { error "unrecognized option: $opt" }
    }
  }

  set f [open crash.tcl w]
  puts $f "sqlite3_crash_on_write $nDelay"
  puts $f "sqlite3_test_control_pending_byte $::sqlite_pending_byte"
  puts $f "sqlite3 db test.db -vfs writecrash"
  puts $f "db eval {$zSql}"
  puts $f "set {} {}"

  close $f
  set r [catch {
    exec [info nameofexec] crash.tcl >@stdout
  } msg]

  # Windows/ActiveState TCL returns a slightly different
  # error message.  We map that to the expected message
Added test/writecrash.test.




























































































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
# 2009 January 8
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# Test the outcome of a writer crashing within a call to the VFS
# xWrite function.
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix writecrash

do_not_use_codec

do_execsql_test 1.0 {
  CREATE TABLE t1(a INTEGER PRIMARY KEY, b BLOB UNIQUE);
  WITH s(i) AS (
    VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<100
  )
  INSERT INTO t1 SELECT NULL, randomblob(900) FROM s;
} {}

set bGo 1
for {set tn 1} {$bGo} {incr tn} {

db close
sqlite3 db test.db

  do_test 1.$tn.1 {
    set res [crash_on_write $tn {
      UPDATE t1 SET b = randomblob(899) WHERE (a%3)==0
    }]
    set bGo 0
    if {[string match {1 {child killed:*}} $res]} {
      set res {0 {}}
      set bGo 1
    }
    set res
  } {0 {}}

#db close
#sqlite3 db test.db

  do_execsql_test 1.$tn.2 { PRAGMA integrity_check } {ok}

db close
sqlite3 db test.db

  do_execsql_test 1.$tn.3 { PRAGMA integrity_check } {ok}
}



finish_test