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lib_hamster.c
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lib_hamster.c
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/*
* Lessfs: A data deduplicating filesystem.
* Copyright (C) 2008 Mark Ruijter <mruijter@lessfs.com>
*
* This program is s_free software.
* You can redistribute lessfs and/or modify it under the terms of either
* (1) the GNU General Public License; either version 3 of the License,
* or (at your option) any later version as published by
* the Free Software Foundation; or (2) obtain a commercial license
* by contacting the Author.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAMSTERDB
#ifndef LFATAL
#include "lib_log.h"
#endif
#include <ham/hamsterdb.h>
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <sys/file.h>
#include <fuse.h>
#include <fcntl.h>
#include <pthread.h>
#include <tcutil.h>
#include <tcbdb.h>
#include <tchdb.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <aio.h>
#include <mhash.h>
#include <mutils/mhash.h>
#include "lib_safe.h"
#include "lib_cfg.h"
#include "retcodes.h"
#ifdef LZO
#include "lib_lzo.h"
#endif
#include "lib_qlz.h"
#include "lib_common.h"
#include "lib_crypto.h"
#include "file_io.h"
#include "lib_repl.h"
#include "lib_hamster.h"
#define TOTAL_DATABASES 8
ham_db_t *db[TOTAL_DATABASES];
ham_env_t *env;
ham_txn_t *txn = 0;
ham_status_t st;
int dbb = DBB;
int dbu = DBU;
int dbp = DBP;
int dbl = DBL;
int dbs = DBS;
int dbdta = DBDTA;
int dbdirent = DBDIRENT;
int freelist = FREELIST;
extern TCTREE *workqtree; // Used to buffer incoming data (writes)
extern TCTREE *readcachetree; // Used to cache chunks of data that are likely to be read
extern TCTREE *metatree; // Used to cache file metadata (e.g. inode -> struct stat).
extern TCTREE *hashtree; // Used to lock hashes
extern TCTREE *inodetree; // Used to lock inodes
extern TCTREE *path2inotree; // Used to cache path to inode translations
extern struct configdata *config;
extern unsigned long long nextoffset;
int fdbdta;
int frepl = 0;
int freplbl = 0;
extern int BLKSIZE;
static pthread_mutex_t hamster_mutex = PTHREAD_MUTEX_INITIALIZER;
const char *ham_lockedby;
void ham_lock(const char *msg)
{
FUNC;
LDEBUG("ham_lock : %s", msg);
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL) + GLOBAL_LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
err_code = pthread_mutex_timedlock(&hamster_mutex, &deltatime);
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&hamster_mutex);
#endif
ham_lockedby = msg;
LDEBUG("ham_lockedby : %s", ham_lockedby);
EFUNC;
return;
}
int try_ham_lock()
{
int res;
res = pthread_mutex_trylock(&hamster_mutex);
return (res);
}
void release_ham_lock()
{
FUNC;
pthread_mutex_unlock(&hamster_mutex);
EFUNC;
return;
}
void ham_error(const char *foo)
{
LFATAL("%s() returned error %d: %s\n", foo, st, ham_strerror(st));
die_dberr("hamsterdb error");
}
void hm_open()
{
char *dbname;
struct stat stbuf;
char *hashstr;
DAT *data;
int i;
char *sp;
ham_parameter_t envparameters[] = {
{HAM_PARAM_CACHESIZE, config->hamsterdb_cachesize },
{0, 0}
};
FUNC;
sp = s_dirname(config->blockdata);
dbname = as_sprintf(__FILE__, __LINE__, "%s/replog.dta", sp);
config->replication_logfile = s_strdup(dbname);
if (-1 == (frepl = s_open2(dbname, O_CREAT | O_RDWR, S_IRWXU)))
die_syserr();
if (0 != flock(frepl, LOCK_EX | LOCK_NB)) {
LFATAL
("Failed to lock the replication logfile %s\nlessfs must be unmounted before using this option!",
config->replication_logfile);
exit(EXIT_USAGE);
}
if (config->replication && config->replication_role == 0) {
if (-1 == (freplbl = s_open2(dbname, O_RDWR, S_IRWXU)))
die_syserr();
}
s_free(sp);
s_free(dbname);
dbname = as_sprintf(__FILE__, __LINE__, "%s/lessfs.db", config->meta);
if (config->transactions) {
st = ham_env_open(&env, dbname,
HAM_DISABLE_MMAP | HAM_ENABLE_TRANSACTIONS | HAM_ENABLE_FSYNC,
envparameters);
} else {
st = ham_env_open(&env, dbname, HAM_DISABLE_MMAP, envparameters);
}
if (st != HAM_SUCCESS)
ham_error("ham_env_open failed to open the databases");
s_free(dbname);
/*
for (i = 0; i < TOTAL_DATABASES; i++) {
LDEBUG("ham_new %i", i);
st = ham_new(&db[i]);
if (st != HAM_SUCCESS)
ham_error("ham_new");
}*/
st = ham_env_open_db(env, &db[DBDTA], 1 + DBDTA, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBDTA)");
st = ham_env_open_db(env, &db[DBU], 1 + DBU, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBU)");
st = ham_env_open_db(env, &db[DBB], 1 + DBB, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBB)");
st = ham_env_open_db(env, &db[DBP], 1 + DBP, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBP)");
st = ham_env_open_db(env, &db[DBS], 1 + DBS, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBS)");
st = ham_env_open_db(env, &db[DBL], 1 + DBL, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBL)");
st = ham_env_open_db(env, &db[FREELIST], 1 + FREELIST, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (FREELIST)");
st = ham_env_open_db(env, &db[DBDIRENT], 1 + DBDIRENT, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_open_db (DBDIRENT)");
if (config->transactions) {
#ifdef HAM_API_REVISION
ham_txn_begin(&txn, env, "lessfs",NULL,0);
#else
ham_txn_begin(&txn, db[0], 0);
#endif
}
open_trees();
if ( config->blockdata_io_type == FILE_IO ) {
if (-1 ==
(fdbdta =
s_open2(config->blockdata, O_CREAT | O_RDWR, S_IRWXU)))
die_syserr();
if (-1 == (stat(config->blockdata, &stbuf)))
die_syserr();
hashstr = as_sprintf(__FILE__, __LINE__, "NEXTOFFSET");
config->nexthash =
(char *) thash((unsigned char *) hashstr, strlen(hashstr));
s_free(hashstr);
data = search_dbdata(DBU, config->nexthash, config->hashlen, LOCK);
if (!data) {
LINFO("Filesystem upgraded to support transactions");
nextoffset = stbuf.st_size;
} else {
memcpy(&nextoffset, data->data, sizeof(unsigned long long));
DATfree(data);
}
if (config->transactions) {
check_datafile_sanity();
}
}
EFUNC;
LDEBUG("Database are open");
return;
}
void drop_databases()
{
char *dbname;
struct stat stbuf;
dbname = as_sprintf(__FILE__, __LINE__, "%s/lessfs.db", config->meta);
if (-1 != stat(dbname, &stbuf))
unlink(dbname);
s_free(dbname);
if ( config->blockdata_io_type == FILE_IO ) {
if (-1 != stat(config->blockdata, &stbuf))
unlink(config->blockdata);
}
return;
}
void hm_create(bool createpath)
{
char *dbname, *sp;
struct stat stbuf;
char *hashstr;
DAT *data;
int i;
FUNC;
dbname = as_sprintf(__FILE__, __LINE__, "%s/lessfs.db", config->meta);
if (createpath)
mkpath(config->meta, 0744);
ham_parameter_t dbuparameters[] = {
{HAM_PARAM_KEYSIZE, config->hashlen}
,
{0, 0}
};
ham_parameter_t dbbparameters[] = {
{HAM_PARAM_KEYSIZE, 2 * sizeof(unsigned long long)},
{0, 0}
};
ham_parameter_t dbpparameters[] = {
{HAM_PARAM_KEYSIZE, sizeof(unsigned long long)},
{0, 0}
};
ham_parameter_t envparameters[] = {
{HAM_PARAM_CACHESIZE, config->hamsterdb_cachesize },
{0, 0}
};
st = ham_env_create(&env, dbname,
HAM_DISABLE_MMAP | HAM_ENABLE_TRANSACTIONS | HAM_ENABLE_FSYNC |
HAM_AUTO_RECOVERY, 0660, envparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_new %s");
s_free(dbname);
/*for (i = 0; i < TOTAL_DATABASES; i++) {
LDEBUG("ham_new %i", i);
st = ham_new(&db[i]);
if (st != HAM_SUCCESS)
ham_error("ham_new");
}*/
st = ham_env_create_db(env, &db[DBDTA], 1 + DBDTA, 0, dbuparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBDTA)");
st = ham_env_create_db(env, &db[DBU], 1 + DBU, 0, dbuparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBU)");
st = ham_env_create_db(env, &db[DBB], 1 + DBB, 0, dbbparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBB)");
st = ham_env_create_db(env, &db[DBP], 1 + DBP, 0, dbpparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBP)");
st = ham_env_create_db(env, &db[DBS], 1 + DBS, 0, 0);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBS)");
st = ham_env_create_db(env, &db[DBL], 1 + DBL, HAM_ENABLE_DUPLICATES,
0);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBL)");
st = ham_env_create_db(env, &db[FREELIST], 1 + FREELIST,
HAM_ENABLE_DUPLICATES, dbpparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (FREELIST)");
st = ham_env_create_db(env, &db[DBDIRENT], 1 + DBDIRENT,
HAM_ENABLE_DUPLICATES, dbpparameters);
if (st != HAM_SUCCESS)
ham_error("ham_env_create_db (DBDIRENT)");
if (config->transactions) {
#ifdef HAM_API_REVISION
ham_txn_begin(&txn, env, "lessfs",NULL,0);
#else
ham_txn_begin(&txn, db[0], 0);
#endif
}
open_trees();
if ( config->blockdata_io_type == FILE_IO ) {
if (-1 ==
(fdbdta =
s_open2(config->blockdata, O_CREAT | O_RDWR, S_IRWXU)))
die_syserr();
if (-1 == (stat(config->blockdata, &stbuf)))
die_syserr();
hashstr = as_sprintf(__FILE__, __LINE__, "NEXTOFFSET");
config->nexthash =
(char *) thash((unsigned char *) hashstr, strlen(hashstr));
data = search_dbdata(DBU, config->nexthash, config->hashlen, LOCK);
if (!data) {
LINFO("Filesystem upgraded to support transactions");
nextoffset = stbuf.st_size;
} else {
memcpy(&nextoffset, data->data, sizeof(unsigned long long));
DATfree(data);
}
if (config->transactions) {
check_datafile_sanity();
}
}
sp = s_dirname(config->blockdata);
if (createpath)
mkpath(sp, 0744);
dbname = as_sprintf(__FILE__, __LINE__, "%s/replog.dta", sp);
if (-1 == (frepl = s_open2(dbname, O_CREAT | O_RDWR, S_IRWXU)))
die_syserr();
s_free(sp);
s_free(dbname);
return;
}
int btdelete_curkey(int database, void *key, int keylen, void *kvalue,
int kvallen, const char *msg)
{
ham_cursor_t *cursor;
int ret = 1;
ham_key_t hamkey;
ham_record_t hamrecord;
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&hamkey, 0, sizeof(hamkey));
memset(&hamrecord, 0, sizeof(hamrecord));
st = ham_cursor_create(&cursor, db[database],txn, 0);
if (st != HAM_SUCCESS) {
LFATAL("ham_cursor_create() failed with error %d\n", st);
release_ham_lock();
return (-ENOENT);
}
hamkey.data = key;
hamkey.size = keylen;
/* traverse records */
st = ham_cursor_find(cursor, &hamkey, 0, 0);
if (st == HAM_SUCCESS) {
/* traverse records */
do {
if ((st =
ham_cursor_move(cursor, 0, &hamrecord, 0)) != HAM_SUCCESS)
die_dberr
("btdelete_curkey : expected a value after a succesfull find : caller %s",
msg);
if (0 == memcmp(hamrecord.data, kvalue, kvallen)) {
ret = 0;
st = ham_cursor_erase(cursor, 0);
if (st != HAM_SUCCESS) {
LDEBUG("ham_erase, failed to erase key : caller %s",
msg);
ret = -ENOENT;
}
break;
}
} while (HAM_SUCCESS ==
(st =
ham_cursor_move(cursor, &hamkey, &hamrecord,
HAM_CURSOR_NEXT)));
}
ham_cursor_close(cursor);
release_ham_lock();
if (config->replication == 1 && config->replication_role == 0) {
write_repl_data(database, REPLDELETECURKEY, key, keylen, kvalue,
kvallen, MAX_ALLOWED_THREADS - 2);
}
return (ret);
}
DAT *search_dbdata(int database, void *key, int len, bool lock)
{
DAT *data;
ham_key_t hamkey;
ham_record_t record;
FUNC;
data = s_malloc(sizeof(DAT));
if (lock)
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&hamkey, 0, sizeof(hamkey));
memset(&record, 0, sizeof(record));
hamkey.data = key;
hamkey.size = len;
if ((st =
ham_db_find(db[database], txn, &hamkey, &record,
0)) != HAM_SUCCESS) {
LDEBUG("search_dbdata : nothing found in database %i return NULL",
database);
s_free(data);
data = NULL;
} else {
data->data = s_malloc(record.size);
memcpy(data->data, record.data, record.size);
data->size = record.size;
}
if (lock)
release_ham_lock();
EFUNC;
return data;
}
/* Search in directory with inode dinode or key dinode for name bname
Return the inode of file bname */
DDSTAT *dnode_bname_to_inode(void *dinode, int dlen, char *bname)
{
ham_cursor_t *cursor;
DAT *statdata;
DDSTAT *filestat = NULL;
DINOINO dinoino;
unsigned long long keynode;
unsigned long long valnode;
DAT *fname;
FUNC;
ham_key_t key;
ham_record_t record;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&record, 0, sizeof(record));
key.data = (char *) dinode;
key.size = dlen;
st = ham_cursor_create(&cursor, db[DBDIRENT], txn, 0);
if (st != HAM_SUCCESS) {
LFATAL("ham_cursor_create() failed with error %d\n", st);
die_syserr();
}
st = ham_cursor_find(cursor, &key, 0, 0);
if (st == HAM_KEY_NOT_FOUND) {
LINFO("Unable to find file existing in dbp.\n");
goto end_error;
}
/* traverse records */
do {
memcpy(&keynode, key.data, key.size);
if ((st = ham_cursor_move(cursor, 0, &record, 0)) != HAM_SUCCESS) {
LINFO("Key %llu without value dinode.\n", keynode);
filestat = NULL;
goto end_error;
}
memcpy(&valnode, record.data, record.size);
if (keynode == valnode && keynode != 1) {
LDEBUG("keynode == valnode && keynode != 1 %llu", keynode);
continue;
}
statdata =
search_dbdata(DBP, &valnode, sizeof(unsigned long long),
NOLOCK);
if (NULL == statdata) {
LINFO("Unable to find file existing in dbp...\n");
goto end_error;
}
filestat = value_to_ddstat(statdata);
DATfree(statdata);
if (0 != filestat->filename[0]) {
LDEBUG("compare bname %s with filestat->filename %s",
bname, filestat->filename);
if (0 == strcmp(bname, filestat->filename)) {
LDEBUG("%s == %s, break", bname, filestat->filename);
break;
}
} else {
memcpy(&dinoino.dirnode, dinode, sizeof(unsigned long long));
dinoino.inode = filestat->stbuf.st_ino;
fname =
btsearch_keyval(DBL, &dinoino, sizeof(DINOINO), bname,
strlen(bname), NOLOCK);
if (fname) {
memcpy(&filestat->filename, fname->data, fname->size);
filestat->filename[fname->size + 1] = 0;
DATfree(fname);
break;
}
}
ddstatfree(filestat);
filestat = NULL;
} while (HAM_SUCCESS ==
(st =
ham_cursor_move(cursor, &key, &record,
HAM_CURSOR_NEXT | HAM_ONLY_DUPLICATES)));
end_error:
ham_cursor_close(cursor);
release_ham_lock();
return filestat;
}
DAT *btsearch_keyval(int database, void *key, int keylen, void *val,
int vallen, bool lock)
{
ham_cursor_t *cursor;
ham_key_t hamkey;
ham_record_t hamrec;
DAT *ret = NULL;
FUNC;
if (lock)
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&hamkey, 0, sizeof(hamkey));
memset(&hamrec, 0, sizeof(hamrec));
/* create a new cursor */
st = ham_cursor_create(&cursor, db[database], txn, 0);
if (st)
ham_error("ham_cursor_create");
hamkey.data = key;
hamkey.size = keylen;
/* traverse records */
st = ham_cursor_find(cursor, &hamkey, 0, 0);
if (st == HAM_SUCCESS) {
do {
if ((st =
ham_cursor_move(cursor, 0, &hamrec, 0)) != HAM_SUCCESS)
die_dberr
("btsearch_keyval : expected a value after a succesfull find");
if (val) {
if (vallen == hamrec.size) {
if (0 == memcmp(val, hamrec.data, hamrec.size)) {
ret = s_zmalloc(sizeof(DAT));
ret->data = s_zmalloc(hamrec.size + 1);
memcpy(ret->data, hamrec.data, hamrec.size);
ret->size = hamrec.size;
break;
}
}
} else {
ret = s_zmalloc(sizeof(DAT));
ret->data = s_zmalloc(hamrec.size + 1);
memcpy(ret->data, hamrec.data, hamrec.size);
ret->size = hamrec.size;
break;
}
} while (HAM_SUCCESS ==
(st =
ham_cursor_move(cursor, &hamkey, &hamrec,
HAM_CURSOR_NEXT | HAM_ONLY_DUPLICATES)));
}
ham_cursor_close(cursor);
if (lock)
release_ham_lock();
EFUNC;
return ret;
}
int count_dirlinks(void *linkstr, int len)
{
ham_cursor_t *cursor;
ham_key_t key;
ham_record_t rec;
FUNC;
memset(&key, 0, sizeof(key));
memset(&rec, 0, sizeof(rec));
int count = 0;
ham_lock((char *) __PRETTY_FUNCTION__);
st = ham_cursor_create(&cursor, db[DBL], txn, 0);
if (st)
ham_error("ham_cursor_create");
key.data = linkstr;
key.size = len;
st = ham_cursor_find(cursor, &key, 0, 0);
if (st == HAM_SUCCESS) {
/* traverse records */
do {
count++;
if (count > 1)
break;
} while (0 ==
(st =
ham_cursor_move(cursor, &key, &rec,
HAM_CURSOR_NEXT | HAM_ONLY_DUPLICATES)));
}
ham_cursor_close(cursor);
release_ham_lock();
EFUNC;
return (count);
}
// Delete key from database, if caller (msg) is defined this operation
// must be successfull, otherwise we log and exit.
void delete_key(int database, void *keydata, int len, const char *msg)
{
ham_key_t key; /* the structure for a key */
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
key.data = keydata;
key.size = len;
st = ham_db_erase(db[database], txn, &key, 0);
if (st != HAM_SUCCESS) {
if (msg) {
LFATAL("Failed to delete data from database %i : caller %s",
database, msg);
ham_error("ham_erase");
}
}
release_ham_lock();
if (config->replication == 1 && config->replication_role == 0) {
write_repl_data(database, REPLDELETE, keydata, len, NULL, 0,
MAX_ALLOWED_THREADS - 2);
}
EFUNC;
}
char *lessfs_stats()
{
char *lfsmsg = NULL;
char *line;
DDSTAT *ddstat;
DAT *data;
unsigned long long inode;
char *nfi = "NFI";
char *seq = "SEQ";
CRYPTO *crypto;
const char **lines = NULL;
int count = 1;
float ratio;
ham_cursor_t *cursor;
unsigned long lcount;
ham_key_t key;
ham_record_t rec;
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&rec, 0, sizeof(rec));
st = ham_db_get_key_count(db[DBP], txn, 0, (ham_u64_t *) & lcount);
if (st)
ham_error("ham_get_key_count");
lcount++;
lines = s_malloc(lcount * sizeof(char *));
lines[0] =
as_sprintf
(__FILE__, __LINE__,
" INODE SIZE COMPRESSED_SIZE RATIO FILENAME\n");
/* traverse records */
/* create a new cursor */
st = ham_cursor_create(&cursor, db[DBP], txn, 0);
if (st)
ham_error("ham_cursor_create");
while (1) {
st = ham_cursor_move(cursor, &key, &rec, HAM_CURSOR_NEXT);
if (st != HAM_SUCCESS) {
/* reached end of the database? */
if (st == HAM_KEY_NOT_FOUND)
break;
else {
die_dataerr("ham_cursor_next() failed with error %d\n",
st);
}
}
if (0 != memcmp(key.data, nfi, 3) && 0 != memcmp(key.data, seq, 3)) {
memcpy(&inode, key.data, sizeof(unsigned long long));
data =
search_dbdata(DBP, &inode, sizeof(unsigned long long),
NOLOCK);
if (inode == 0) {
crypto = (CRYPTO *) data->data;
} else {
ddstat = value_to_ddstat(data);
ratio=0;
if ( ddstat->stbuf.st_size != 0 ) {
if ( ddstat->real_size == 0 ) {
ratio=1000; // 100% dedup requires datasize/1000 metadata space
} else ratio=(float)ddstat->stbuf.st_size/(float)ddstat->real_size;
} else ratio=0;
if (S_ISREG(ddstat->stbuf.st_mode)) {
#ifdef x86_64
line = as_sprintf
(__FILE__, __LINE__, "%7lu %15lu %15llu %15.2f %s\n",
ddstat->stbuf.st_ino, ddstat->stbuf.st_size,
ddstat->real_size, ratio, ddstat->filename);
#else
line = as_sprintf
(__FILE__, __LINE__, "%7llu %15llu %15llu %15.2f %s\n",
ddstat->stbuf.st_ino, ddstat->stbuf.st_size,
ddstat->real_size, ratio, ddstat->filename);
#endif
lines[count++] = line;
}
ddstatfree(ddstat);
}
DATfree(data);
}
}
lfsmsg = as_strarrcat(lines, count);
ham_cursor_close(cursor);
release_ham_lock();
while (count) {
s_free((char *) lines[--count]);
}
s_free(lines);
EFUNC;
return lfsmsg;
}
void bin_write_dbdata(int database, void *keydata, int keylen,
void *dataData, int datalen)
{
ham_key_t key; /* the structure for a key */
ham_record_t record; /* the structure for a record */
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&record, 0, sizeof(record));
key.data = keydata;
key.size = keylen;
record.size = datalen;
record.data = dataData;
st = ham_db_insert(db[database], txn, &key, &record, HAM_OVERWRITE);
if (st != HAM_SUCCESS)
ham_error("bin_write_dbdata");
release_ham_lock();
if (config->replication == 1 && config->replication_role == 0) {
write_repl_data(database, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
EFUNC;
return;
}
void bin_write(int database, void *keydata, int keylen,
void *dataData, int datalen)
{
ham_key_t key; /* the structure for a key */
ham_record_t record; /* the structure for a record */
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&record, 0, sizeof(record));
key.data = keydata;
key.size = keylen;
record.size = datalen;
record.data = dataData;
st = ham_db_insert(db[database], txn, &key, &record, HAM_OVERWRITE);
if (st != HAM_SUCCESS)
ham_error("bin_write");
release_ham_lock();
EFUNC;
return;
}
void btbin_write_dup(int database, void *keydata, int keylen,
void *dataData, int datalen, bool lock)
{
ham_key_t key; /* the structure for a key */
ham_record_t record; /* the structure for a record */
FUNC;
if (lock)
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&record, 0, sizeof(record));
key.data = keydata;
key.size = keylen;
record.size = datalen;
record.data = dataData;
LDEBUG("btbin_write_dup : before insert database %i", database);
st = ham_db_insert(db[database], txn, &key, &record, HAM_DUPLICATE);
if (st != HAM_SUCCESS)
ham_error("btbin_write_dup");
LDEBUG("btbin_write_dup : after insert");
if (lock)
release_ham_lock();
if (config->replication == 1 && config->replication_role == 0) {
write_repl_data(database, REPLDUPWRITE, keydata, keylen,
dataData, datalen, MAX_ALLOWED_THREADS - 2);
}
EFUNC;
}
void hm_close(bool abort)
{
FUNC;
ham_lock((char *) __PRETTY_FUNCTION__);
if (config->transactions) {
if (abort) {
st = ham_env_close(env, HAM_AUTO_CLEANUP | HAM_TXN_AUTO_ABORT);
} else {
st = ham_env_close(env,
HAM_AUTO_CLEANUP | HAM_TXN_AUTO_COMMIT);
}
} else
st = ham_env_close(env, HAM_AUTO_CLEANUP);
if (st != HAM_SUCCESS)
ham_error("ham_env_close failed");
release_ham_lock();
close_trees();
if ( config->blockdata_io_type == FILE_IO ) {
fsync(fdbdta);
close(fdbdta);
free(config->nexthash);
}
flock(frepl, LOCK_UN);
fsync(frepl);
close(frepl);
if (config->replication && config->replication_role == 0)
close(freplbl);
s_free(config->replication_logfile);
EFUNC;
return;
}
int fs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
int retcode = 0;
ham_cursor_t *cursor;
int res;
struct stat stbuf;
DAT *filedata;
DDSTAT *ddstat;
ham_key_t key;
ham_record_t rec;
FUNC;
(void) offset;
(void) fi;
LDEBUG("Called fs_readdir with path %s", (char *) path);
res = dbstat(path, &stbuf, 1);
if (0 != res) {
return -ENOENT;
}
if (0 == strcmp(path, "/.lessfs/locks")) {
LDEBUG("fs_readdir : reading locks");
locks_to_dir(buf, filler, fi);
}
ham_lock((char *) __PRETTY_FUNCTION__);
memset(&key, 0, sizeof(key));
memset(&rec, 0, sizeof(rec));
st = ham_cursor_create(&cursor, db[DBDIRENT], txn, 0);
if (st)
ham_error("fs_readdir : failed to create cursor");
key.data = &stbuf.st_ino;
key.size = sizeof(unsigned long long);
st = ham_cursor_find(cursor, &key, 0, 0);
if (st == HAM_SUCCESS) {
do {
if ((st = ham_cursor_move(cursor, 0, &rec, 0)) != HAM_SUCCESS)
die_dberr
("btdelete_curkey : expected a value after a succesfull find");
if (0 == memcmp(rec.data, key.data, key.size))
continue;
filedata = search_dbdata(DBP, rec.data, rec.size, NOLOCK);
if (filedata) {
ddstat = value_to_ddstat(filedata);
DATfree(filedata);
if (ddstat->filename[0] == 0) {
fs_read_hardlink(stbuf, ddstat, buf, filler, fi);
} else {
fil_fuse_info(ddstat, buf, filler, fi);
}
ddstatfree(ddstat);
}
} while (HAM_SUCCESS ==
(st =
ham_cursor_move(cursor, &key, &rec,
HAM_CURSOR_NEXT | HAM_ONLY_DUPLICATES)));
}
ham_cursor_close(cursor);
release_ham_lock();
LDEBUG("fs_readdir: return");
return (retcode);
}
void fs_read_hardlink(struct stat stbuf, DDSTAT * ddstat, void *buf,
fuse_fill_dir_t filler, struct fuse_file_info *fi)
{
ham_cursor_t *cursor;
DINOINO dinoino;
ham_key_t key;
ham_record_t rec;
FUNC;
memset(&key, 0, sizeof(key));
memset(&rec, 0, sizeof(rec));
LDEBUG("fs_read_hardlink : %llu", (unsigned long long) stbuf.st_ino);
st = ham_cursor_create(&cursor, db[DBL], txn, 0);
if (st)
ham_error("ham_cursor_create");
dinoino.dirnode = stbuf.st_ino;
dinoino.inode = ddstat->stbuf.st_ino;
key.data = &dinoino;
key.size = sizeof(DINOINO);
st = ham_cursor_find(cursor, &key, 0, 0);
if (st == HAM_SUCCESS) {
do {
if ((st = ham_cursor_move(cursor, 0, &rec, 0)) != HAM_SUCCESS) {
LINFO("fs_read_hardlink : Key without value dinode.\n");
goto end_error;
}
memcpy(&ddstat->filename, rec.data, rec.size);
ddstat->filename[rec.size] = 0;
fil_fuse_info(ddstat, buf, filler, fi);
ddstat->filename[0] = 0;
} while (HAM_SUCCESS ==
(st =
ham_cursor_move(cursor, &key, &rec,
HAM_CURSOR_NEXT | HAM_ONLY_DUPLICATES)));
}
end_error:
ham_cursor_close(cursor);
EFUNC;
return;
}
int bt_entry_exists(int database, void *parent, int parentlen, void *value,
int vallen)
{
int res = 0;
ham_cursor_t *cursor;