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Overview
| Comment: | Fix the xFetch method of the "memdb" VFS (used by deserialize) so that it is robust against corrupt database file. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | dbsqlfuzz-in-fuzzcheck |
| Files: | files | file ages | folders |
| SHA3-256: | 2c1ef40e787a6bc355b50168527a47eb |
| User & Date: | drh 2019-01-25 14:16:01 |
Context
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2019-01-25
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| 14:23 | Extend fuzzcheck so that it can process dbsqlfuzz cases. Add a collection of interesting dbsqlfuzz cases to the standard test suite. check-in: e2991a7e user: drh tags: trunk | |
| 14:16 | Fix the xFetch method of the "memdb" VFS (used by deserialize) so that it is robust against corrupt database file. Closed-Leaf check-in: 2c1ef40e user: drh tags: dbsqlfuzz-in-fuzzcheck | |
| 13:03 | In fuzzcheck, activate vdbe_debug for dbsqlfuzz cases when using the -vvvvv verbosity level or above. check-in: 2e6f7c2a user: drh tags: dbsqlfuzz-in-fuzzcheck | |
Changes
Changes to src/memdb.c.
306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 |
static int memdbFetch(
sqlite3_file *pFile,
sqlite3_int64 iOfst,
int iAmt,
void **pp
){
MemFile *p = (MemFile *)pFile;
p->nMmap++;
*pp = (void*)(p->aData + iOfst);
return SQLITE_OK;
}
/* Release a memory-mapped page */
static int memdbUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){
MemFile *p = (MemFile *)pFile;
p->nMmap--;
|
> > > > | | > |
306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 |
static int memdbFetch(
sqlite3_file *pFile,
sqlite3_int64 iOfst,
int iAmt,
void **pp
){
MemFile *p = (MemFile *)pFile;
if( iOfst+iAmt>p->sz ){
assert( CORRUPT_DB );
*pp = 0;
}else{
p->nMmap++;
*pp = (void*)(p->aData + iOfst);
}
return SQLITE_OK;
}
/* Release a memory-mapped page */
static int memdbUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){
MemFile *p = (MemFile *)pFile;
p->nMmap--;
|