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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
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2015-05-24
| ||
| 10:18 | Detect database corruption in the modifyPagePointer() routine and abort. check-in: 4f0bba42 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: 7bbf9b3c user: drh tags: trunk | |
| 19:29 | Earlier detection of a specific kind of corruption in the balance_nonroot() routine. check-in: ee6dc991 user: drh tags: trunk | |
Changes
Changes to src/btree.c.
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 6902 6903 6904 6905 |
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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