void file_update_block(const char *blockdata, unsigned long long blocknr,
unsigned int offsetblock, unsigned long long size,
unsigned long long inode, unsigned char *chksum,
off_t offset)
{
DBT *data = NULL;
DBT *decrypted = NULL;
DBT *cachedata;
unsigned char *dbdata;
INOBNO inobno;
compr *uncompdata;
BLKCACHE *blk;
unsigned char *dtiger;
INUSE *inuse;
bool compressed = 1;
QDTA *dta;
#ifndef SHA3
word64 res[3];
#endif
FUNC;
LDEBUG
("file_update_block : inode %llu blocknr %llu offsetblock %llu, size %llu",
inode, blocknr, (unsigned long long) offsetblock,
(unsigned long long) size);
inobno.inode = inode;
inobno.blocknr = blocknr;
dbdata = (unsigned char *) s_malloc(BLKSIZE);
memset(dbdata, 0, BLKSIZE);
data = try_block_cache(inode, blocknr, 0);
if (NULL != data) {
LDEBUG("try_block_cache : HIT");
memcpy(dbdata, data->data, data->size);
memcpy(dbdata + offsetblock, blockdata, size);
add_blk_to_cache(inode, blocknr, offsetblock + size, dbdata, offset);
update_filesize(inode, size, offsetblock, blocknr, 0, 0, 0);
free(dbdata);
DBTfree(data);
return;
} else
LDEBUG("%s: block not found in cache.", __FUNCTION__);
// We don't need the old blockdata when we overwrite it completely anyway.
if (offsetblock > 0 || size < BLKSIZE) {
get_moddb_lock();
// First read the cache
decrypted = search_memhash(dbdtaq, chksum, config->hashlen);
if (NULL == decrypted) {
LDEBUG("%s: Not in dbdtaq", __FUNCTION__);
data = file_tgr_read_data(chksum);
if (NULL == data) {
LDEBUG("%s: Not found", __FUNCTION__);
cachedata =
search_memhash(blkcache, &inobno.inode,
sizeof(unsigned long long));
if (NULL != cachedata) {
blk = (BLKCACHE *) cachedata->data;
#ifdef SHA3
dtiger=sha_binhash(blk->blockdata, BLKSIZE);
#else
binhash(blk->blockdata, BLKSIZE, res);
dtiger=(unsigned char *)&res;
#endif
if (0 == memcmp(dtiger, chksum, config->hashlen)) {
LDEBUG("%s: data alloc here", __FUNCTION__);
data = s_malloc(sizeof(DBT));
data->data = s_malloc(BLKSIZE);
data->size = BLKSIZE;
memcpy(data->data, blk->blockdata, BLKSIZE);
DBTfree(cachedata);
compressed = 0;
} else {
LDEBUG
("updateBlock : Not in dbcache, out of luck.");
loghash("updateBlock : No data found to read ",
chksum);
die_dataerr
("file_update_block : No data found to read - this should never happen: inode :%llu: blocknr :%llu",
inode, blocknr);
}
#ifdef SHA3
free(dtiger);
#endif
} else {
log_fatal_hash("file_update_block : No data found to read ",
chksum);
die_dataerr
("file_update_block : No data found to read, this should never happen: inode :%llu: blocknr :%llu",
inode, blocknr);
}
}
} else {
data = s_malloc(sizeof(DBT));
dta = (QDTA *) decrypted->data;
data->data = s_malloc(dta->size);
memcpy(data->data, dta->data, dta->size);
data->size = dta->size;
DBTfree(decrypted);
LDEBUG("data->size = %lu", data->size);
}
release_moddb_lock();
if (compressed && data->size < BLKSIZE) {
#ifdef LZO
uncompdata = lzo_decompress(data->data, data->size);
#else
uncompdata = clz_decompress(data->data, data->size);
#endif
memcpy(dbdata, uncompdata->data, uncompdata->size);
comprfree(uncompdata);
} else {
memcpy(dbdata, data->data, data->size);
}
DBTfree(data);
}
memcpy(dbdata + offsetblock, blockdata, size);
add_blk_to_cache(inode, blocknr, offsetblock + size, dbdata, offset);
inuse = file_get_inuse(chksum);
if (NULL == inuse)
die_dataerr("file_update_block : hash not found");
if (inuse->inuse <= 1) {
file_delete_data_cache(chksum, &inobno);
put_on_freelist(inuse);
delete_inuse(chksum);
} else {
inuse->inuse--;
file_update_inuse(chksum, inuse);
}
free(inuse);
update_filesize(inode, size, offsetblock, blocknr, 0, 0, 0);
free(dbdata);
EFUNC;
return;
}
int mongo_write(const char *path, const char *buf, size_t size,
off_t offset, struct fuse_file_info *fi)
{
struct inode * e;
int res;
size_t reallen;
int32_t realend = size, blk_offset = 0;
const off_t write_end = size + offset;
char * lock;
bson doc, cond;
mongo * conn = get_conn();
uint8_t hash[20];
time_t now = time(NULL);
e = (struct inode*)fi->fh;
if((res = get_cached_inode(path, e)) != 0)
return res;
if(e->mode & S_IFDIR)
return -EISDIR;
/* Uncomment this for incredibly slow length calculations.
for(;realend >= 0 && buf[realend] == '\0'; realend--);
realend++;
for(blk_offset = 0; blk_offset < realend && buf[blk_offset] == 0; blk_offset++);
blk_offset -= blk_offset > 0 ? 1 : 0;
* The code below uses SSE4 instructions to find the first/last
* zero bytes by doing 16-byte comparisons at a time. This should give
* a ~16 speed boost on blocks with lots of zero bytes over the dumb
* method above.
*/
if(size >= 16) {
__m128i zero = _mm_setzero_si128();
lock = (char*)buf + size - 16;
while(lock >= buf) {
__m128i x = _mm_loadu_si128((__m128i*)lock);
res = _mm_movemask_epi8(_mm_cmpeq_epi8(zero, x));
if(res == 0xffff) {
lock -= 16;
continue;
}
realend = lock - buf + fls(res ^ 0xffff);
break;
}
if(lock <= buf)
realend = 0;
lock = (char*)buf;
while(lock - buf < realend) {
__m128i x = _mm_loadu_si128((__m128i*)lock);
res = _mm_movemask_epi8(_mm_cmpeq_epi8(zero, x));
if(res == 0xffff) {
lock += 16;
continue;
}
blk_offset = lock - buf + ffs(res ^ 0xffff) - 1;
break;
}
}
reallen = realend - blk_offset;
if(reallen == 0) {
pthread_mutex_lock(&e->wr_lock);
res = insert_empty(&e->wr_extent, offset, size);
goto end;
}
#ifdef __APPLE__
CC_SHA1(buf, size, hash);
#else
SHA1(buf, size, hash);
#endif
bson_init(&cond);
bson_append_binary(&cond, "_id", 0, (char*)hash, sizeof(hash));
bson_finish(&cond);
bson_init(&doc);
bson_append_start_object(&doc, "$setOnInsert");
char * comp_out = get_compress_buf();
size_t comp_size = snappy_max_compressed_length(reallen);
if((res = snappy_compress(buf + blk_offset, reallen,
comp_out, &comp_size)) != SNAPPY_OK) {
fprintf(stderr, "Error compressing input: %d\n", res);
return -EIO;
}
bson_append_binary(&doc, "data", 0, comp_out, comp_size);
bson_append_int(&doc, "offset", blk_offset);
bson_append_int(&doc, "size", size);
bson_append_time_t(&doc, "created", now);
bson_append_finish_object(&doc);
bson_finish(&doc);
res = mongo_update(conn, blocks_name, &cond, &doc,
MONGO_UPDATE_UPSERT, NULL);
bson_destroy(&doc);
bson_destroy(&cond);
if(res != MONGO_OK) {
fprintf(stderr, "Error committing block %s\n", conn->lasterrstr);
return -EIO;
}
pthread_mutex_lock(&e->wr_lock);
res = insert_hash(&e->wr_extent, offset, size, hash);
end:
if(write_end > e->size)
e->size = write_end;
if(now - e->wr_age > 3) {
res = serialize_extent(e, e->wr_extent);
if(res != 0) {
pthread_mutex_unlock(&e->wr_lock);
return res;
}
e->wr_age = now;
}
pthread_mutex_unlock(&e->wr_lock);
if(res != 0)
return res;
res = update_filesize(e, write_end);
if(res != 0)
return res;
return size;
}
void add_file_block(BLKDTA * blkdta)
{
INOBNO inobno;
DBT *cachedata = NULL;
INUSE *inuse;
OFFHASH *offhash;
inobno.inode = blkdta->inode;
inobno.blocknr = blkdta->blocknr;
FUNC;
LDEBUG("add_file_block : inode %llu - %llu", inobno.inode,
inobno.blocknr);
if (blkdta->bsize + blkdta->offsetblock < BLKSIZE) {
// Flush the blockcache before overwriting.
cachedata = try_block_cache(blkdta->inode, blkdta->blocknr, 0);
if (cachedata)
DBTfree(cachedata);
add_blk_to_cache(blkdta->inode, blkdta->blocknr,
blkdta->bsize + blkdta->offsetblock, blkdta->blockfiller,
blkdta->offsetfile);
LDEBUG
("add_file_block : wrote with add_blk_to_cache : inode %llu - %llu size %i",
inobno.inode, inobno.blocknr, blkdta->bsize);
update_filesize(blkdta->inode, blkdta->bsize, blkdta->offsetblock,
blkdta->blocknr, blkdta->sparse, 0, 0);
return;
}
inuse = file_get_inuse(blkdta->stiger);
if (inuse == NULL) {
if (NULL == blkdta->compressed) {
#ifdef LZO
blkdta->compressed =
lzo_compress(blkdta->blockfiller, BLKSIZE);
#else
blkdta->compressed =
clz_compress(blkdta->blockfiller, BLKSIZE);
#endif
}
LDEBUG("Compressed %i bytes to %lu bytes", BLKSIZE,
blkdta->compressed->size);
loghash("add_file_block call qdta for hash :", blkdta->stiger);
inuse = s_malloc(sizeof(INUSE));
inuse->inuse = 0;
inuse->offset = get_offset(blkdta->compressed->size);
LDEBUG("add to offset %llu", inuse->offset);
inuse->size = blkdta->compressed->size;
file_qdta(&inobno, blkdta->stiger, blkdta->compressed->data,
blkdta->compressed->size, inuse->offset);
loghash("add_file_block queued with qdta", blkdta->stiger);
update_filesize(blkdta->inode, blkdta->bsize, blkdta->offsetblock,
blkdta->blocknr, blkdta->sparse,
blkdta->compressed->size, 0);
} else {
update_filesize(blkdta->inode, blkdta->bsize, blkdta->offsetblock,
blkdta->blocknr, blkdta->sparse, 0, 1);
}
if (NULL != blkdta->compressed)
comprfree(blkdta->compressed);
inuse->inuse = inuse->inuse + 1;
file_update_inuse(blkdta->stiger, inuse);
offhash = s_malloc(sizeof(OFFHASH));
offhash->offset = blkdta->offsetfile;
memcpy(offhash->stiger, blkdta->stiger, config->hashlen);
write_dbb_to_cache(&inobno, offhash);
free(offhash);
free(inuse);
EFUNC;
return;
}
