xref: /sqlite-3.40.0/src/test2.c (revision e64ca7ba)
1 /*
2 ** 2001 September 15
3 **
4 ** The author disclaims copyright to this source code.  In place of
5 ** a legal notice, here is a blessing:
6 **
7 **    May you do good and not evil.
8 **    May you find forgiveness for yourself and forgive others.
9 **    May you share freely, never taking more than you give.
10 **
11 *************************************************************************
12 ** Code for testing the pager.c module in SQLite.  This code
13 ** is not included in the SQLite library.  It is used for automated
14 ** testing of the SQLite library.
15 **
16 ** $Id: test2.c,v 1.72 2009/07/16 18:21:18 drh Exp $
17 */
18 #include "sqliteInt.h"
19 #include "tcl.h"
20 #include <stdlib.h>
21 #include <string.h>
22 #include <ctype.h>
23 
24 /*
25 ** Interpret an SQLite error number
26 */
27 static char *errorName(int rc){
28   char *zName;
29   switch( rc ){
30     case SQLITE_OK:         zName = "SQLITE_OK";          break;
31     case SQLITE_ERROR:      zName = "SQLITE_ERROR";       break;
32     case SQLITE_PERM:       zName = "SQLITE_PERM";        break;
33     case SQLITE_ABORT:      zName = "SQLITE_ABORT";       break;
34     case SQLITE_BUSY:       zName = "SQLITE_BUSY";        break;
35     case SQLITE_NOMEM:      zName = "SQLITE_NOMEM";       break;
36     case SQLITE_READONLY:   zName = "SQLITE_READONLY";    break;
37     case SQLITE_INTERRUPT:  zName = "SQLITE_INTERRUPT";   break;
38     case SQLITE_IOERR:      zName = "SQLITE_IOERR";       break;
39     case SQLITE_CORRUPT:    zName = "SQLITE_CORRUPT";     break;
40     case SQLITE_FULL:       zName = "SQLITE_FULL";        break;
41     case SQLITE_CANTOPEN:   zName = "SQLITE_CANTOPEN";    break;
42     case SQLITE_PROTOCOL:   zName = "SQLITE_PROTOCOL";    break;
43     case SQLITE_EMPTY:      zName = "SQLITE_EMPTY";       break;
44     case SQLITE_SCHEMA:     zName = "SQLITE_SCHEMA";      break;
45     case SQLITE_CONSTRAINT: zName = "SQLITE_CONSTRAINT";  break;
46     case SQLITE_MISMATCH:   zName = "SQLITE_MISMATCH";    break;
47     case SQLITE_MISUSE:     zName = "SQLITE_MISUSE";      break;
48     case SQLITE_NOLFS:      zName = "SQLITE_NOLFS";       break;
49     default:                zName = "SQLITE_Unknown";     break;
50   }
51   return zName;
52 }
53 
54 /*
55 ** Page size and reserved size used for testing.
56 */
57 static int test_pagesize = 1024;
58 
59 /*
60 ** Usage:   pager_open FILENAME N-PAGE
61 **
62 ** Open a new pager
63 */
64 static int pager_open(
65   void *NotUsed,
66   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
67   int argc,              /* Number of arguments */
68   const char **argv      /* Text of each argument */
69 ){
70   u16 pageSize;
71   Pager *pPager;
72   int nPage;
73   int rc;
74   char zBuf[100];
75   if( argc!=3 ){
76     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
77        " FILENAME N-PAGE\"", 0);
78     return TCL_ERROR;
79   }
80   if( Tcl_GetInt(interp, argv[2], &nPage) ) return TCL_ERROR;
81   rc = sqlite3PagerOpen(sqlite3_vfs_find(0), &pPager, argv[1], 0, 0,
82       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_MAIN_DB);
83   if( rc!=SQLITE_OK ){
84     Tcl_AppendResult(interp, errorName(rc), 0);
85     return TCL_ERROR;
86   }
87   sqlite3PagerSetCachesize(pPager, nPage);
88   pageSize = test_pagesize;
89   sqlite3PagerSetPagesize(pPager, &pageSize, -1);
90   sqlite3_snprintf(sizeof(zBuf),zBuf,"%p",pPager);
91   Tcl_AppendResult(interp, zBuf, 0);
92   return TCL_OK;
93 }
94 
95 /*
96 ** Usage:   pager_close ID
97 **
98 ** Close the given pager.
99 */
100 static int pager_close(
101   void *NotUsed,
102   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
103   int argc,              /* Number of arguments */
104   const char **argv      /* Text of each argument */
105 ){
106   Pager *pPager;
107   int rc;
108   if( argc!=2 ){
109     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
110        " ID\"", 0);
111     return TCL_ERROR;
112   }
113   pPager = sqlite3TestTextToPtr(argv[1]);
114   rc = sqlite3PagerClose(pPager);
115   if( rc!=SQLITE_OK ){
116     Tcl_AppendResult(interp, errorName(rc), 0);
117     return TCL_ERROR;
118   }
119   return TCL_OK;
120 }
121 
122 /*
123 ** Usage:   pager_rollback ID
124 **
125 ** Rollback changes
126 */
127 static int pager_rollback(
128   void *NotUsed,
129   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
130   int argc,              /* Number of arguments */
131   const char **argv      /* Text of each argument */
132 ){
133   Pager *pPager;
134   int rc;
135   if( argc!=2 ){
136     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
137        " ID\"", 0);
138     return TCL_ERROR;
139   }
140   pPager = sqlite3TestTextToPtr(argv[1]);
141   rc = sqlite3PagerRollback(pPager);
142   if( rc!=SQLITE_OK ){
143     Tcl_AppendResult(interp, errorName(rc), 0);
144     return TCL_ERROR;
145   }
146   return TCL_OK;
147 }
148 
149 /*
150 ** Usage:   pager_commit ID
151 **
152 ** Commit all changes
153 */
154 static int pager_commit(
155   void *NotUsed,
156   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
157   int argc,              /* Number of arguments */
158   const char **argv      /* Text of each argument */
159 ){
160   Pager *pPager;
161   int rc;
162   if( argc!=2 ){
163     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
164        " ID\"", 0);
165     return TCL_ERROR;
166   }
167   pPager = sqlite3TestTextToPtr(argv[1]);
168   rc = sqlite3PagerCommitPhaseOne(pPager, 0, 0);
169   if( rc!=SQLITE_OK ){
170     Tcl_AppendResult(interp, errorName(rc), 0);
171     return TCL_ERROR;
172   }
173   rc = sqlite3PagerCommitPhaseTwo(pPager);
174   if( rc!=SQLITE_OK ){
175     Tcl_AppendResult(interp, errorName(rc), 0);
176     return TCL_ERROR;
177   }
178   return TCL_OK;
179 }
180 
181 /*
182 ** Usage:   pager_stmt_begin ID
183 **
184 ** Start a new checkpoint.
185 */
186 static int pager_stmt_begin(
187   void *NotUsed,
188   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
189   int argc,              /* Number of arguments */
190   const char **argv      /* Text of each argument */
191 ){
192   Pager *pPager;
193   int rc;
194   if( argc!=2 ){
195     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
196        " ID\"", 0);
197     return TCL_ERROR;
198   }
199   pPager = sqlite3TestTextToPtr(argv[1]);
200   rc = sqlite3PagerOpenSavepoint(pPager, 1);
201   if( rc!=SQLITE_OK ){
202     Tcl_AppendResult(interp, errorName(rc), 0);
203     return TCL_ERROR;
204   }
205   return TCL_OK;
206 }
207 
208 /*
209 ** Usage:   pager_stmt_rollback ID
210 **
211 ** Rollback changes to a checkpoint
212 */
213 static int pager_stmt_rollback(
214   void *NotUsed,
215   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
216   int argc,              /* Number of arguments */
217   const char **argv      /* Text of each argument */
218 ){
219   Pager *pPager;
220   int rc;
221   if( argc!=2 ){
222     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
223        " ID\"", 0);
224     return TCL_ERROR;
225   }
226   pPager = sqlite3TestTextToPtr(argv[1]);
227   rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_ROLLBACK, 0);
228   sqlite3PagerSavepoint(pPager, SAVEPOINT_RELEASE, 0);
229   if( rc!=SQLITE_OK ){
230     Tcl_AppendResult(interp, errorName(rc), 0);
231     return TCL_ERROR;
232   }
233   return TCL_OK;
234 }
235 
236 /*
237 ** Usage:   pager_stmt_commit ID
238 **
239 ** Commit changes to a checkpoint
240 */
241 static int pager_stmt_commit(
242   void *NotUsed,
243   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
244   int argc,              /* Number of arguments */
245   const char **argv      /* Text of each argument */
246 ){
247   Pager *pPager;
248   int rc;
249   if( argc!=2 ){
250     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
251        " ID\"", 0);
252     return TCL_ERROR;
253   }
254   pPager = sqlite3TestTextToPtr(argv[1]);
255   rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_RELEASE, 0);
256   if( rc!=SQLITE_OK ){
257     Tcl_AppendResult(interp, errorName(rc), 0);
258     return TCL_ERROR;
259   }
260   return TCL_OK;
261 }
262 
263 /*
264 ** Usage:   pager_stats ID
265 **
266 ** Return pager statistics.
267 */
268 static int pager_stats(
269   void *NotUsed,
270   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
271   int argc,              /* Number of arguments */
272   const char **argv      /* Text of each argument */
273 ){
274   Pager *pPager;
275   int i, *a;
276   if( argc!=2 ){
277     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
278        " ID\"", 0);
279     return TCL_ERROR;
280   }
281   pPager = sqlite3TestTextToPtr(argv[1]);
282   a = sqlite3PagerStats(pPager);
283   for(i=0; i<9; i++){
284     static char *zName[] = {
285       "ref", "page", "max", "size", "state", "err",
286       "hit", "miss", "ovfl",
287     };
288     char zBuf[100];
289     Tcl_AppendElement(interp, zName[i]);
290     sqlite3_snprintf(sizeof(zBuf),zBuf,"%d",a[i]);
291     Tcl_AppendElement(interp, zBuf);
292   }
293   return TCL_OK;
294 }
295 
296 /*
297 ** Usage:   pager_pagecount ID
298 **
299 ** Return the size of the database file.
300 */
301 static int pager_pagecount(
302   void *NotUsed,
303   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
304   int argc,              /* Number of arguments */
305   const char **argv      /* Text of each argument */
306 ){
307   Pager *pPager;
308   char zBuf[100];
309   int nPage;
310   if( argc!=2 ){
311     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
312        " ID\"", 0);
313     return TCL_ERROR;
314   }
315   pPager = sqlite3TestTextToPtr(argv[1]);
316   sqlite3PagerPagecount(pPager, &nPage);
317   sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", nPage);
318   Tcl_AppendResult(interp, zBuf, 0);
319   return TCL_OK;
320 }
321 
322 /*
323 ** Usage:   page_get ID PGNO
324 **
325 ** Return a pointer to a page from the database.
326 */
327 static int page_get(
328   void *NotUsed,
329   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
330   int argc,              /* Number of arguments */
331   const char **argv      /* Text of each argument */
332 ){
333   Pager *pPager;
334   char zBuf[100];
335   DbPage *pPage;
336   int pgno;
337   int rc;
338   if( argc!=3 ){
339     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
340        " ID PGNO\"", 0);
341     return TCL_ERROR;
342   }
343   pPager = sqlite3TestTextToPtr(argv[1]);
344   if( Tcl_GetInt(interp, argv[2], &pgno) ) return TCL_ERROR;
345   rc = sqlite3PagerGet(pPager, pgno, &pPage);
346   if( rc!=SQLITE_OK ){
347     Tcl_AppendResult(interp, errorName(rc), 0);
348     return TCL_ERROR;
349   }
350   sqlite3_snprintf(sizeof(zBuf),zBuf,"%p",pPage);
351   Tcl_AppendResult(interp, zBuf, 0);
352   return TCL_OK;
353 }
354 
355 /*
356 ** Usage:   page_lookup ID PGNO
357 **
358 ** Return a pointer to a page if the page is already in cache.
359 ** If not in cache, return an empty string.
360 */
361 static int page_lookup(
362   void *NotUsed,
363   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
364   int argc,              /* Number of arguments */
365   const char **argv      /* Text of each argument */
366 ){
367   Pager *pPager;
368   char zBuf[100];
369   DbPage *pPage;
370   int pgno;
371   if( argc!=3 ){
372     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
373        " ID PGNO\"", 0);
374     return TCL_ERROR;
375   }
376   pPager = sqlite3TestTextToPtr(argv[1]);
377   if( Tcl_GetInt(interp, argv[2], &pgno) ) return TCL_ERROR;
378   pPage = sqlite3PagerLookup(pPager, pgno);
379   if( pPage ){
380     sqlite3_snprintf(sizeof(zBuf),zBuf,"%p",pPage);
381     Tcl_AppendResult(interp, zBuf, 0);
382   }
383   return TCL_OK;
384 }
385 
386 /*
387 ** Usage:   pager_truncate ID PGNO
388 */
389 static int pager_truncate(
390   void *NotUsed,
391   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
392   int argc,              /* Number of arguments */
393   const char **argv      /* Text of each argument */
394 ){
395   Pager *pPager;
396   int pgno;
397   if( argc!=3 ){
398     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
399        " ID PGNO\"", 0);
400     return TCL_ERROR;
401   }
402   pPager = sqlite3TestTextToPtr(argv[1]);
403   if( Tcl_GetInt(interp, argv[2], &pgno) ) return TCL_ERROR;
404   sqlite3PagerTruncateImage(pPager, pgno);
405   return TCL_OK;
406 }
407 
408 
409 /*
410 ** Usage:   page_unref PAGE
411 **
412 ** Drop a pointer to a page.
413 */
414 static int page_unref(
415   void *NotUsed,
416   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
417   int argc,              /* Number of arguments */
418   const char **argv      /* Text of each argument */
419 ){
420   DbPage *pPage;
421   if( argc!=2 ){
422     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
423        " PAGE\"", 0);
424     return TCL_ERROR;
425   }
426   pPage = (DbPage *)sqlite3TestTextToPtr(argv[1]);
427   sqlite3PagerUnref(pPage);
428   return TCL_OK;
429 }
430 
431 /*
432 ** Usage:   page_read PAGE
433 **
434 ** Return the content of a page
435 */
436 static int page_read(
437   void *NotUsed,
438   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
439   int argc,              /* Number of arguments */
440   const char **argv      /* Text of each argument */
441 ){
442   char zBuf[100];
443   DbPage *pPage;
444   if( argc!=2 ){
445     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
446        " PAGE\"", 0);
447     return TCL_ERROR;
448   }
449   pPage = sqlite3TestTextToPtr(argv[1]);
450   memcpy(zBuf, sqlite3PagerGetData(pPage), sizeof(zBuf));
451   Tcl_AppendResult(interp, zBuf, 0);
452   return TCL_OK;
453 }
454 
455 /*
456 ** Usage:   page_number PAGE
457 **
458 ** Return the page number for a page.
459 */
460 static int page_number(
461   void *NotUsed,
462   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
463   int argc,              /* Number of arguments */
464   const char **argv      /* Text of each argument */
465 ){
466   char zBuf[100];
467   DbPage *pPage;
468   if( argc!=2 ){
469     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
470        " PAGE\"", 0);
471     return TCL_ERROR;
472   }
473   pPage = (DbPage *)sqlite3TestTextToPtr(argv[1]);
474   sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", sqlite3PagerPagenumber(pPage));
475   Tcl_AppendResult(interp, zBuf, 0);
476   return TCL_OK;
477 }
478 
479 /*
480 ** Usage:   page_write PAGE DATA
481 **
482 ** Write something into a page.
483 */
484 static int page_write(
485   void *NotUsed,
486   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
487   int argc,              /* Number of arguments */
488   const char **argv      /* Text of each argument */
489 ){
490   DbPage *pPage;
491   char *pData;
492   int rc;
493   if( argc!=3 ){
494     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
495        " PAGE DATA\"", 0);
496     return TCL_ERROR;
497   }
498   pPage = (DbPage *)sqlite3TestTextToPtr(argv[1]);
499   rc = sqlite3PagerWrite(pPage);
500   if( rc!=SQLITE_OK ){
501     Tcl_AppendResult(interp, errorName(rc), 0);
502     return TCL_ERROR;
503   }
504   pData = sqlite3PagerGetData(pPage);
505   strncpy(pData, argv[2], test_pagesize-1);
506   pData[test_pagesize-1] = 0;
507   return TCL_OK;
508 }
509 
510 #ifndef SQLITE_OMIT_DISKIO
511 /*
512 ** Usage:   fake_big_file  N  FILENAME
513 **
514 ** Write a few bytes at the N megabyte point of FILENAME.  This will
515 ** create a large file.  If the file was a valid SQLite database, then
516 ** the next time the database is opened, SQLite will begin allocating
517 ** new pages after N.  If N is 2096 or bigger, this will test the
518 ** ability of SQLite to write to large files.
519 */
520 static int fake_big_file(
521   void *NotUsed,
522   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
523   int argc,              /* Number of arguments */
524   const char **argv      /* Text of each argument */
525 ){
526   sqlite3_vfs *pVfs;
527   sqlite3_file *fd = 0;
528   int rc;
529   int n;
530   i64 offset;
531   if( argc!=3 ){
532     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
533        " N-MEGABYTES FILE\"", 0);
534     return TCL_ERROR;
535   }
536   if( Tcl_GetInt(interp, argv[1], &n) ) return TCL_ERROR;
537 
538   pVfs = sqlite3_vfs_find(0);
539   rc = sqlite3OsOpenMalloc(pVfs, argv[2], &fd,
540       (SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE|SQLITE_OPEN_MAIN_DB), 0
541   );
542   if( rc ){
543     Tcl_AppendResult(interp, "open failed: ", errorName(rc), 0);
544     return TCL_ERROR;
545   }
546   offset = n;
547   offset *= 1024*1024;
548   rc = sqlite3OsWrite(fd, "Hello, World!", 14, offset);
549   sqlite3OsCloseFree(fd);
550   if( rc ){
551     Tcl_AppendResult(interp, "write failed: ", errorName(rc), 0);
552     return TCL_ERROR;
553   }
554   return TCL_OK;
555 }
556 #endif
557 
558 
559 /*
560 ** test_control_pending_byte  PENDING_BYTE
561 **
562 ** Set the PENDING_BYTE using the sqlite3_test_control() interface.
563 */
564 static int testPendingByte(
565   void *NotUsed,
566   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
567   int argc,              /* Number of arguments */
568   const char **argv      /* Text of each argument */
569 ){
570   int pbyte;
571   int rc;
572   if( argc!=2 ){
573     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
574                      " PENDING-BYTE\"", (void*)0);
575   }
576   if( Tcl_GetInt(interp, argv[1], &pbyte) ) return TCL_ERROR;
577   rc = sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, pbyte);
578   Tcl_SetObjResult(interp, Tcl_NewIntObj(rc));
579   return TCL_OK;
580 }
581 
582 /*
583 ** sqlite3BitvecBuiltinTest SIZE PROGRAM
584 **
585 ** Invoke the SQLITE_TESTCTRL_BITVEC_TEST operator on test_control.
586 ** See comments on sqlite3BitvecBuiltinTest() for additional information.
587 */
588 static int testBitvecBuiltinTest(
589   void *NotUsed,
590   Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
591   int argc,              /* Number of arguments */
592   const char **argv      /* Text of each argument */
593 ){
594   int sz, rc;
595   int nProg = 0;
596   int aProg[100];
597   const char *z;
598   if( argc!=3 ){
599     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
600                      " SIZE PROGRAM\"", (void*)0);
601   }
602   if( Tcl_GetInt(interp, argv[1], &sz) ) return TCL_ERROR;
603   z = argv[2];
604   while( nProg<99 && *z ){
605     while( *z && !sqlite3Isdigit(*z) ){ z++; }
606     if( *z==0 ) break;
607     aProg[nProg++] = atoi(z);
608     while( sqlite3Isdigit(*z) ){ z++; }
609   }
610   aProg[nProg] = 0;
611   rc = sqlite3_test_control(SQLITE_TESTCTRL_BITVEC_TEST, sz, aProg);
612   Tcl_SetObjResult(interp, Tcl_NewIntObj(rc));
613   return TCL_OK;
614 }
615 
616 /*
617 ** Register commands with the TCL interpreter.
618 */
619 int Sqlitetest2_Init(Tcl_Interp *interp){
620   extern int sqlite3_io_error_persist;
621   extern int sqlite3_io_error_pending;
622   extern int sqlite3_io_error_hit;
623   extern int sqlite3_io_error_hardhit;
624   extern int sqlite3_diskfull_pending;
625   extern int sqlite3_diskfull;
626   static struct {
627     char *zName;
628     Tcl_CmdProc *xProc;
629   } aCmd[] = {
630     { "pager_open",              (Tcl_CmdProc*)pager_open          },
631     { "pager_close",             (Tcl_CmdProc*)pager_close         },
632     { "pager_commit",            (Tcl_CmdProc*)pager_commit        },
633     { "pager_rollback",          (Tcl_CmdProc*)pager_rollback      },
634     { "pager_stmt_begin",        (Tcl_CmdProc*)pager_stmt_begin    },
635     { "pager_stmt_commit",       (Tcl_CmdProc*)pager_stmt_commit   },
636     { "pager_stmt_rollback",     (Tcl_CmdProc*)pager_stmt_rollback },
637     { "pager_stats",             (Tcl_CmdProc*)pager_stats         },
638     { "pager_pagecount",         (Tcl_CmdProc*)pager_pagecount     },
639     { "page_get",                (Tcl_CmdProc*)page_get            },
640     { "page_lookup",             (Tcl_CmdProc*)page_lookup         },
641     { "page_unref",              (Tcl_CmdProc*)page_unref          },
642     { "page_read",               (Tcl_CmdProc*)page_read           },
643     { "page_write",              (Tcl_CmdProc*)page_write          },
644     { "page_number",             (Tcl_CmdProc*)page_number         },
645     { "pager_truncate",          (Tcl_CmdProc*)pager_truncate      },
646 #ifndef SQLITE_OMIT_DISKIO
647     { "fake_big_file",           (Tcl_CmdProc*)fake_big_file       },
648 #endif
649     { "sqlite3BitvecBuiltinTest",(Tcl_CmdProc*)testBitvecBuiltinTest     },
650     { "sqlite3_test_control_pending_byte", (Tcl_CmdProc*)testPendingByte },
651   };
652   int i;
653   for(i=0; i<sizeof(aCmd)/sizeof(aCmd[0]); i++){
654     Tcl_CreateCommand(interp, aCmd[i].zName, aCmd[i].xProc, 0, 0);
655   }
656   Tcl_LinkVar(interp, "sqlite_io_error_pending",
657      (char*)&sqlite3_io_error_pending, TCL_LINK_INT);
658   Tcl_LinkVar(interp, "sqlite_io_error_persist",
659      (char*)&sqlite3_io_error_persist, TCL_LINK_INT);
660   Tcl_LinkVar(interp, "sqlite_io_error_hit",
661      (char*)&sqlite3_io_error_hit, TCL_LINK_INT);
662   Tcl_LinkVar(interp, "sqlite_io_error_hardhit",
663      (char*)&sqlite3_io_error_hardhit, TCL_LINK_INT);
664   Tcl_LinkVar(interp, "sqlite_diskfull_pending",
665      (char*)&sqlite3_diskfull_pending, TCL_LINK_INT);
666   Tcl_LinkVar(interp, "sqlite_diskfull",
667      (char*)&sqlite3_diskfull, TCL_LINK_INT);
668   Tcl_LinkVar(interp, "sqlite_pending_byte",
669      (char*)&sqlite3PendingByte, TCL_LINK_INT | TCL_LINK_READ_ONLY);
670   return TCL_OK;
671 }
672