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Overview
| Comment: | Instead of early detection of corruption in balance_nonroot, simply ignore the error, as it is harmless and exceedingly uncommon. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7bbf9b3cd6ebf103ebd8347579aef721 |
| User & Date: | drh 2015-05-23 19:53:48 |
Context
|
2015-05-24
| ||
| 10:18 | Detect database corruption in the modifyPagePointer() routine and abort. (check-in: 4f0bba42f9 user: drh tags: trunk) | |
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2015-05-23
| ||
| 19:53 | Instead of early detection of corruption in balance_nonroot, simply ignore the error, as it is harmless and exceedingly uncommon. (check-in: 7bbf9b3cd6 user: drh tags: trunk) | |
| 19:29 | Earlier detection of a specific kind of corruption in the balance_nonroot() routine. (check-in: ee6dc9913a user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
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iSpace1 += sz;
assert( sz<=pBt->maxLocal+23 );
assert( iSpace1 <= (int)pBt->pageSize );
memcpy(pTemp, apDiv[i], sz);
apCell[nCell] = pTemp+leafCorrection;
assert( leafCorrection==0 || leafCorrection==4 );
szCell[nCell] = szCell[nCell] - leafCorrection;
if( szCell[nCell]<3 ){
rc = SQLITE_CORRUPT_BKPT;
goto balance_cleanup;
}
if( !pOld->leaf ){
assert( leafCorrection==0 );
assert( pOld->hdrOffset==0 );
/* The right pointer of the child page pOld becomes the left
** pointer of the divider cell */
memcpy(apCell[nCell], &pOld->aData[8], 4);
}else{
assert( leafCorrection==4 );
if( szCell[nCell]<4 ){
/* Do not allow any cells smaller than 4 bytes. If a smaller cell
** does exist, pad it with 0x00 bytes. */
assert( szCell[nCell]==3 );
assert( apCell[nCell]==&aSpace1[iSpace1-3] );
aSpace1[iSpace1++] = 0x00;
szCell[nCell] = 4;
}
}
nCell++;
}
}
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6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 |
iSpace1 += sz;
assert( sz<=pBt->maxLocal+23 );
assert( iSpace1 <= (int)pBt->pageSize );
memcpy(pTemp, apDiv[i], sz);
apCell[nCell] = pTemp+leafCorrection;
assert( leafCorrection==0 || leafCorrection==4 );
szCell[nCell] = szCell[nCell] - leafCorrection;
if( !pOld->leaf ){
assert( leafCorrection==0 );
assert( pOld->hdrOffset==0 );
/* The right pointer of the child page pOld becomes the left
** pointer of the divider cell */
memcpy(apCell[nCell], &pOld->aData[8], 4);
}else{
assert( leafCorrection==4 );
if( szCell[nCell]<4 ){
/* Do not allow any cells smaller than 4 bytes. If a smaller cell
** does exist, pad it with 0x00 bytes. */
assert( szCell[nCell]==3 || CORRUPT_DB );
assert( apCell[nCell]==&aSpace1[iSpace1-3] || CORRUPT_DB );
aSpace1[iSpace1++] = 0x00;
szCell[nCell] = 4;
}
}
nCell++;
}
}
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