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Modifications to the journal format to make it more robust. (CVS 1686)

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FossilOrigin-Name: 504246a18daca794473b17a7874096f1ec8648ee
This commit is contained in:
danielk1977
2004-06-25 02:38:54 +00:00
parent e970767144
commit 7657240a21
5 changed files with 479 additions and 206 deletions
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17
src/os_test.c
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@@ -207,14 +207,24 @@ static int writeCache2(OsTestFile *pFile, int crash){
u8 *p = pFile->apBlk[i];
if( p ){
int skip = 0;
int trash = 0;
if( crash ){
char random;
sqlite3Randomness(1, &random);
if( random & 0x01 ){
skip = 1;
if( 0 && random & 0x02 ){
trash = 1;
#ifdef TRACE_WRITECACHE
printf("Not writing block %d of %s\n", i, pFile->zName);
printf("Trashing block %d of %s\n", i, pFile->zName);
#endif
}else{
skip = 1;
#ifdef TRACE_WRITECACHE
printf("Skiping block %d of %s\n", i, pFile->zName);
#endif
}
}else{
#ifdef TRACE_WRITECACHE
printf("Writing block %d of %s\n", i, pFile->zName);
#endif
}
@@ -227,6 +237,9 @@ printf("Writing block %d of %s\n", i, pFile->zName);
if( BLOCK_OFFSET(i+1)>nMax ){
len = nMax-BLOCK_OFFSET(i);
}
if( trash ){
sqlite3Randomness(len, p);
}
rc = sqlite3RealWrite(&pFile->fd, p, len);
}
sqliteFree(p);