void lessfsck_file_io()
{
unsigned long long rsize;
struct stat stbuf;
common_check();
if (-1 == stat(config->blockdata, &stbuf) ) die_dataerr("%s does not exist.\n",config->blockdata);
if ( stbuf.st_size > nextoffset ) {
rsize=round_512(nextoffset);
printf("%cFree %llu orphaned bytes.\n",BACKSPACE,nextoffset-rsize);
if ( -1 == ftruncate(fdbdta, rsize)) die_dataerr("Failed to truncate file %s to size %llu",config->blockdata,rsize);
}
}
void set_new_offset(unsigned long long size)
{
unsigned long long offset = 0;
FUNC;
LDEBUG("oldoffset is %llu : add size %llu", nextoffset, size);
offset = round_512(size);
nextoffset = nextoffset + offset;
LDEBUG("nextoffset is now %llu", nextoffset);
EFUNC;
return;
}
/* The freelist is a btree with as key the number
of blocks (512 bytes). The value is offset.
*/
void put_on_freelist(INUSE * inuse)
{
unsigned long long calc;
FUNC;
int ecode;
calc = round_512(inuse->size);
calc = calc / 512;
if (!tcbdbputdup(freelist, (void *) &calc, sizeof(unsigned long long),
(void *) &inuse->offset,
sizeof(unsigned long long))) {
ecode = tcbdbecode(freelist);
die_dberr("tcbdbputdup failed : %s", tcbdberrmsg(ecode));
}
LDEBUG("put_on_freelist : %llu blocks at offset %llu", calc,
inuse->offset);
EFUNC;
return;
}
unsigned long long get_offset(unsigned long long size)
{
unsigned long long mbytes;
unsigned long long offset;
BDBCUR *cur;
unsigned long long *dbkey;
unsigned long long *dboffset;
int dbsize;
bool found = 0;
FUNC;
mbytes = round_512(size);
mbytes = mbytes / 512;
offset = nextoffset;
LDEBUG("get_offset : search for %llu blocks on the freelist", mbytes);
cur = tcbdbcurnew(freelist);
if (tcbdbcurjump(cur, (void *) &mbytes, sizeof(unsigned long long))) {
if ((dbkey = tcbdbcurkey(cur, &dbsize)) != NULL) {
if (0 == memcmp(dbkey, &mbytes, sizeof(unsigned long long))) {
if ((dboffset = tcbdbcurval(cur, &dbsize)) == NULL)
die_dataerr("No value for key");
memcpy(&offset, dboffset, sizeof(unsigned long long));
found = 1;
LDEBUG
("get_offset : reclaim %llu blocks on the freelist at offset %llu",
mbytes, offset);
if (!tcbdbcurout(cur)) {
die_dataerr
("Failed to delete key, this should never happen!");
}
free(dboffset);
}
free(dbkey);
}
}
if (!found)
set_new_offset(size);
tcbdbcurdel(cur);
LDEBUG("get_offset returns = %llu", offset);
EFUNC;
return (offset);
}
