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Fix SQLITE_SECURE_DELETE so that it overwrites content on the root pages

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of tables and indices that are dropped using the truncate optimization.

FossilOrigin-Name: 02ef972a56aab1e61786000283193165d3968842
This commit is contained in:
drh 2009-11-24 02:37:02 +00:00
parent a62bb8d4d7
commit 7ab641fb01
3 changed files with 16 additions and 14 deletions
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18
manifest
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@ -1,8 +1,8 @@
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D 2009-11-23T21:23:46
C Fix\sSQLITE_SECURE_DELETE\sso\sthat\sit\soverwrites\scontent\son\sthe\sroot\spages\nof\stables\sand\sindices\sthat\sare\sdropped\susing\sthe\struncate\soptimization.
D 2009-11-24T02:37:03
F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
F Makefile.in 7f6c6aa7feeeb5e26e01b344161d9aa1b5d64177
F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@ -111,7 +111,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
F src/backup.c 744e98359dfc79fed43e8dec911e33e108b06aae
F src/bitvec.c 06ad2c36a9c3819c0b9cbffec7b15f58d5d834e0
F src/btmutex.c 96a12f50f7a17475155971a241d85ec5171573ff
F src/btree.c d37a90bbcc30f92f1ea772de94cd4225df1801ef
F src/btree.c c13f6d1a469f7bac963fff7f17980919acd5f3ee
F src/btree.h 7944a9dac59eb3e541aad45fd2747f1051e7c63d
F src/btreeInt.h 54f4245decd0409ea52cf9aee422d3d761d7ac10
F src/build.c a48e74d24897100017d39ceba5de255e53ec9488
@ -776,14 +776,14 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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2
manifest.uuid
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@ -1 +1 @@
83dc7d38c2695d1b2a7d4866a4df9be9e41d1abe
02ef972a56aab1e61786000283193165d3968842

10
src/btree.c
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@ -1475,7 +1475,9 @@ static void zeroPage(MemPage *pPage, int flags){
assert( sqlite3PagerGetData(pPage->pDbPage) == data );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( sqlite3_mutex_held(pBt->mutex) );
/*memset(&data[hdr], 0, pBt->usableSize - hdr);*/
#ifdef SQLITE_SECURE_DELETE
memset(&data[hdr], 0, pBt->usableSize - hdr);
#endif
data[hdr] = (char)flags;
first = hdr + 8 + 4*((flags&PTF_LEAF)==0 ?1:0);
memset(&data[hdr+1], 0, 4);
@ -6855,9 +6857,9 @@ int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){
*/
static int clearDatabasePage(
BtShared *pBt, /* The BTree that contains the table */
Pgno pgno, /* Page number to clear */
int freePageFlag, /* Deallocate page if true */
int *pnChange
Pgno pgno, /* Page number to clear */
int freePageFlag, /* Deallocate page if true */
int *pnChange /* Add number of Cells freed to this counter */
){
MemPage *pPage;
int rc;