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lib_tc.c
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lib_tc.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
#ifndef LFATAL
#include "lib_log.h"
#endif
#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_qlz15.h"
#include "lib_common.h"
#include "lib_tc.h"
#include "lib_crypto.h"
#include "file_io.h"
#include "lib_repl.h"
#ifndef BERKELEYDB
#ifndef HAMSTERDB
extern char *logname;
extern char *function;
extern int debug;
extern int BLKSIZE;
extern int max_threads;
extern char *passwd;
TCHDB *dbb;
TCHDB *dbu;
TCHDB *dbp;
TCBDB *dbl;
TCHDB *dbs;
TCHDB *dbdta;
TCBDB *dbdirent;
TCBDB *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
int fdbdta = 0;
int frepl = 0;
int freplbl = 0;
extern unsigned long long nextoffset;
int written = 0;
const char *offset_lockedby;
u_int32_t db_flags, env_flags;
int btree_test_transaction(TCBDB * bdb)
{
char *testtransaction = "LESSFSTESTTRANSACTION";
int ecode;
int retcode = 0;
if (config->transactions) {
if (!tcbdbtranbegin(bdb))
goto e_exit;
if (!tcbdbput
(bdb, testtransaction, strlen(testtransaction),
testtransaction, strlen(testtransaction)))
goto e_exit;
if (!tcbdbtrancommit(bdb))
goto e_exit;
if (!tcbdbtranbegin(bdb))
goto e_exit;
if (!tcbdbout(bdb, testtransaction, strlen(testtransaction))) {
ecode = tcbdbecode(bdb);
die_dataerr
("check_hash_database - Failed to delete the initial test transaction");
}
if (!tcbdbtrancommit(bdb))
goto e_exit;
}
retcode = 1;
e_exit:
return (retcode);
}
TCHDB *tc_set_hashdb(int database)
{
TCHDB *db;
switch (database) {
case DBU:
db = dbu;
break;
case DBB:
db = dbb;
break;
case DBDTA:
db = dbdta;
break;
case DBP:
db = dbp;
break;
case DBS:
db = dbs;
break;
default:
die_syserr();
}
return db;
}
TCBDB *tc_set_btreedb(int database)
{
TCBDB *db;
switch (database) {
case DBDIRENT:
db = dbdirent;
break;
case DBL:
db = dbl;
break;
case FREELIST:
db = freelist;
break;
default:
die_syserr();
}
return db;
}
int hash_test_transaction(TCHDB * hdb, char *dbpath)
{
char *testtransaction = "LESSFSTESTTRANSACTION";
int ecode;
int retcode = 0;
if (config->transactions) {
if (!tchdbtranbegin(hdb))
goto e_exit;
if (!tchdbput
(hdb, testtransaction, strlen(testtransaction),
testtransaction, strlen(testtransaction)))
goto e_exit;
if (!tchdbtrancommit(hdb))
goto e_exit;
tchdbsync(hdb);
if (!tchdbtranbegin(hdb))
goto e_exit;
if (!tchdbout(hdb, testtransaction, strlen(testtransaction))) {
ecode = tchdbecode(hdb);
die_dataerr
("check_hash_database - Failed to delete the initial test transaction");
}
if (!tchdbtrancommit(hdb))
goto e_exit;
}
retcode = 1;
e_exit:
return (1);
}
void repair_hash_database(TCHDB * hdb, char *dbpath,
unsigned long long bucketsize)
{
LFATAL
("repair_hash_database : database %s failed the initial test transaction : executing automatic repair",
dbpath);
if (!tchdboptimize(hdb, bucketsize, 0, 0, HDBTLARGE))
die_dberr("Could not recover database : %s", dbpath);
}
void repair_btree_database(TCBDB * bdb, char *dbpath,
unsigned long long bucketsize)
{
LFATAL
("repair_btree_database : database %s failed the initial test transaction : executing automatic repair",
dbpath);
if (!tcbdboptimize(bdb, 0, 0, bucketsize, -1, -1, BDBTLARGE))
die_dberr("Could not recover database : %s", dbpath);
}
TCHDB *hashdb_open(char *dbpath, int cacherow,
unsigned long long bucketsize, bool force_optimize)
{
TCHDB *hdb;
int ecode;
int count = 0;
FUNC;
//retry_open:
hdb = tchdbnew();
if (cacherow > 0) {
tchdbsetcache(hdb, cacherow);
}
if (config->defrag == 1) {
if (!tchdbsetdfunit(hdb, 1)) {
ecode = tchdbecode(hdb);
die_dberr("Error on setting defragmentation : %s",
tchdberrmsg(ecode));
}
}
tchdbsetmutex(hdb);
LINFO("Tuning the bucketsize for %s to %llu", dbpath, bucketsize);
if (!tchdbtune(hdb, bucketsize, 0, 0, HDBTLARGE)) {
ecode = tchdbecode(hdb);
die_dberr("Failed to tune database buckets : %s",
tchdberrmsg(ecode));
}
if (!tchdbsetxmsiz(hdb, bucketsize)) {
ecode = tchdbecode(hdb);
die_dberr("Failed to set extra mapped memory : %s",
tchdberrmsg(ecode));
}
if (!tchdbopen(hdb, dbpath, HDBOWRITER | HDBOCREAT) || force_optimize) {
repair_hash_database(hdb, dbpath, bucketsize);
count++;
}
if (!hash_test_transaction(hdb, dbpath)) {
if (count == 0) {
repair_hash_database(hdb, dbpath, bucketsize);
count++;
} else
die_dberr
("hash_test_transaction failed on a database that was 'repaired'");
}
if (count == 1)
LFATAL
("Database : %s, has been repaired : running lessfsck is recommended",
dbpath);
EFUNC;
return hdb;
}
TCBDB *btreedb_open(char *dbpath, int cacherow,
unsigned long long bucketsize, bool force_optimize)
{
TCBDB *bdb;
int ecode;
int count = 0;
FUNC;
bdb = tcbdbnew();
if (config->defrag == 1) {
if (!tcbdbsetdfunit(bdb, 1)) {
ecode = tcbdbecode(bdb);
die_dberr("Error on setting defragmentation : %s",
tcbdberrmsg(ecode));
}
}
tcbdbsetmutex(bdb);
tcbdbtune(bdb, 0, 0, bucketsize, -1, -1, BDBTLARGE);
tcbdbsetxmsiz(bdb, bucketsize);
if (!tcbdbopen(bdb, dbpath, BDBOWRITER | BDBOCREAT) || force_optimize) {
repair_btree_database(bdb, dbpath, bucketsize);
count++;
}
if (!btree_test_transaction(bdb)) {
if (count == 0) {
repair_btree_database(bdb, dbpath, bucketsize);
} else
die_dberr
("btree_test_transaction failed on a database that was 'repaired'");
}
if (count == 1)
LFATAL
("Database : %s, has been repaired : running lessfsck is recommended",
dbpath);
EFUNC;
return bdb;
}
void tc_defrag()
{
start_flush_commit();
if (!tchdboptimize(dbb, atol(config->fileblockbs), 0, 0, HDBTLARGE))
LINFO("fileblock.tch not optimized");
if (!tchdboptimize(dbu, atol(config->blockusagebs), 0, 0, HDBTLARGE))
LINFO("blockusage.tch not optimized");
if (!tchdboptimize(dbp, atol(config->metabs), 0, 0, HDBTLARGE))
LINFO("metadata.tcb not optimized");
if (!tchdboptimize(dbs, atol(config->symlinkbs), 0, 0, HDBTLARGE))
LINFO("symlink.tch not optimized");
if (config->blockdatabs) {
if (!tchdboptimize
(dbdta, atol(config->blockdatabs), 0, 0, HDBTLARGE))
LINFO("blockdata.tch not optimized");
}
if (!tcbdboptimize
(freelist, 0, 0, atol(config->freelistbs), -1, -1, BDBTLARGE))
LINFO("freelist.tcb not optimized");
if (!tcbdboptimize
(dbdirent, 0, 0, atol(config->direntbs), -1, -1, BDBTLARGE))
LINFO("dirent.tcb not optimized");
if (!tcbdboptimize
(dbl, 0, 0, atol(config->hardlinkbs), -1, -1, BDBTLARGE))
LINFO("hardlink.tcb not optimized");
end_flush_commit();
}
void tc_open(bool defrag, bool createpath, bool force_optimize)
{
char *dbpath;
struct stat stbuf;
char *sp;
char *hashstr;
DAT *data;
FUNC;
LINFO("Lessfs with tokyocabinet is no longer recommended, please consider using BerkeleyDB");
if ( config->blockdata_io_type == FILE_IO ) {
sp = s_dirname(config->blockdata);
} else sp=s_strdup(config->blockdata);
if (createpath)
mkpath(sp, 0744);
dbpath = as_sprintf(__FILE__, __LINE__, "%s/replog.dta", sp);
config->replication_logfile = s_strdup(dbpath);
if (-1 == (frepl = s_open2(dbpath, 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(dbpath, O_RDWR, S_IRWXU)))
die_syserr();
}
s_free(dbpath);
s_free(sp);
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/fileblock.tch",
config->fileblock);
if (createpath)
mkpath(config->fileblock, 0744);
LDEBUG("Open database %s", dbpath);
dbb =
hashdb_open(dbpath, 0, atol(config->fileblockbs), force_optimize);
s_free(dbpath);
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/blockusage.tch",
config->blockusage);
if (createpath)
mkpath(config->blockusage, 0744);
LDEBUG("Open database %s", dbpath);
dbu =
hashdb_open(dbpath, 0, atol(config->blockusagebs), force_optimize);
s_free(dbpath);
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/metadata.tcb", config->meta);
if (createpath)
mkpath(config->meta, 0744);
LDEBUG("Open database %s", dbpath);
dbp = hashdb_open(dbpath, 0, atol(config->metabs), force_optimize);
s_free(dbpath);
if (config->blockdatabs) {
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/blockdata.tch",
config->blockdata);
if (createpath)
mkpath(config->blockdata, 0744);
LDEBUG("Open database %s", dbpath);
dbdta =
hashdb_open(dbpath, 0, atol(config->blockdatabs),
force_optimize);
s_free(dbpath);
}
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/freelist.tcb",
config->freelist);
if (createpath)
mkpath(config->freelist, 0744);
freelist =
btreedb_open(dbpath, 0, atol(config->freelistbs), force_optimize);
LDEBUG("Open database %s", dbpath);
s_free(dbpath);
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/symlink.tch", config->symlink);
if (createpath)
mkpath(config->symlink, 0744);
LDEBUG("Open database %s", dbpath);
dbs = hashdb_open(dbpath, 0, atol(config->symlinkbs), force_optimize);
s_free(dbpath);
/* The dirent database is a B-TREE DB with cursors */
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/dirent.tcb", config->dirent);
if (createpath)
mkpath(config->dirent, 0744);
dbdirent =
btreedb_open(dbpath, 0, atol(config->direntbs), force_optimize);
s_free(dbpath);
/* The dbl database is a B-TREE DB with cursors */
dbpath =
as_sprintf(__FILE__, __LINE__, "%s/hardlink.tcb",
config->hardlink);
if (createpath)
mkpath(config->hardlink, 0744);
dbl =
btreedb_open(dbpath, 0, atol(config->hardlinkbs), force_optimize);
LDEBUG("Open database %s", dbpath);
s_free(dbpath);
if (!defrag) {
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();
if (config->transactions) {
check_datafile_sanity();
}
}
if ( config->blockdata_io_type != TOKYOCABINET ) {
hashstr = as_sprintf(__FILE__, __LINE__, "NEXTOFFSET");
config->nexthash =
(char *) thash((unsigned char *) hashstr, strlen(hashstr));
data =
search_dbdata(DBU, config->nexthash, config->hashlen,
NOLOCK);
if (NULL == data) {
LINFO("Filesystem upgraded to support transactions");
nextoffset = stbuf.st_size;
} else {
memcpy(&nextoffset, data->data,
sizeof(unsigned long long));
DATfree(data);
}
}
}
LDEBUG("All databases are open");
if (config->transactions) {
if (config->blockdatabs) {
tchdbtranbegin(dbdta);
}
tcbdbtranbegin(freelist);
tchdbtranbegin(dbu);
tchdbtranbegin(dbb);
tchdbtranbegin(dbs);
tchdbtranbegin(dbp);
tcbdbtranbegin(dbdirent);
tcbdbtranbegin(dbl);
}
EFUNC;
return;
}
void hashdb_close(TCHDB * hdb)
{
int ecode;
FUNC;
/* close the database */
if (!tchdbclose(hdb)) {
ecode = tchdbecode(hdb);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tchdbdel(hdb);
}
void tc_close(bool defrag)
{
int ecode;
FUNC;
if (config->blockdata_io_type != TOKYOCABINET ) {
bin_write_dbdata(DBU, config->nexthash, config->hashlen,
(unsigned char *) &nextoffset,
sizeof(unsigned long long));
}
commit_transactions();
hashdb_close(dbb);
hashdb_close(dbp);
hashdb_close(dbu);
hashdb_close(dbs);
if (config->blockdata_io_type == TOKYOCABINET ) {
hashdb_close(dbdta);
}
/* close the B-TREE database */
if (!tcbdbclose(freelist)) {
ecode = tcbdbecode(freelist);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(freelist);
/* close the B-TREE database */
if (!tcbdbclose(dbdirent)) {
ecode = tcbdbecode(dbdirent);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(dbdirent);
/* close the B-TREE database */
if (!tcbdbclose(dbl)) {
ecode = tcbdbecode(dbl);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(dbl);
if (!defrag) {
close_trees();
if (config->blockdata_io_type != TOKYOCABINET ) {
fsync(fdbdta);
close(fdbdta);
s_free(config->nexthash);
}
}
fsync(frepl);
close(frepl);
if (config->replication && config->replication_role == 0)
close(freplbl);
EFUNC;
}
// lock is not used
void btbin_write_dup(int database, void *keydata, int keylen,
void *dataData, int datalen, bool lock)
{
TCBDB *tcdb;
int ecode;
FUNC;
tcdb = tc_set_btreedb(database);
if (!tcbdbputdup(tcdb, keydata, keylen, dataData, datalen)) {
ecode = tcbdbecode(tcdb);
die_dberr("tcbdbputdup failed : %s", tcbdberrmsg(ecode));
}
if (0 == config->relax)
tcbdbsync(tcdb);
if (config->replication == 1 && config->replication_role == 0) {
if (database == DBDIRENT) {
write_repl_data(DBDIRENT, REPLDUPWRITE, keydata, keylen,
dataData, datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBL) {
write_repl_data(DBL, REPLDUPWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == FREELIST) {
write_repl_data(FREELIST, REPLDUPWRITE, keydata, keylen,
dataData, datalen, MAX_ALLOWED_THREADS - 2);
}
}
EFUNC;
}
void btbin_write_dbdata(int database, void *keydata, int keylen,
void *dataData, int datalen)
{
TCBDB *tcdb;
int ecode;
FUNC;
tcdb = tc_set_btreedb(database);
if (!tcbdbput(tcdb, keydata, keylen, dataData, datalen)) {
ecode = tcbdbecode(tcdb);
die_dberr("tcbdbput failed : %s", tchdberrmsg(ecode));
}
if (0 == config->relax)
tcbdbsync(tcdb);
if (config->replication == 1 && config->replication_role == 0) {
if (database == DBDIRENT) {
write_repl_data(DBDIRENT, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBL) {
write_repl_data(DBL, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == FREELIST) {
write_repl_data(FREELIST, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
}
EFUNC;
}
void mbin_write_dbdata(TCMDB * db, void *keydata, int keylen,
void *dataData, int datalen)
{
FUNC;
tcmdbput(db, keydata, keylen, dataData, datalen);
EFUNC;
}
void nbin_write_dbdata(TCNDB * db, void *keydata, int keylen,
void *dataData, int datalen)
{
FUNC;
tcndbput(db, keydata, keylen, dataData, datalen);
EFUNC;
}
void bin_write_dbdata(int database, void *keydata, int keylen,
void *dataData, int datalen)
{
TCHDB *db;
int ecode;
db = tc_set_hashdb(database);
if (!tchdbput(db, keydata, keylen, dataData, datalen)) {
ecode = tchdbecode(db);
die_dberr("tchdbput failed : %s", tchdberrmsg(ecode));
}
if (config->replication == 1 && config->replication_role == 0) {
if (database == DBDTA) {
write_repl_data(DBDTA, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBU) {
write_repl_data(DBU, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBB) {
write_repl_data(DBB, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBP) {
write_repl_data(DBP, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
if (database == DBS) {
write_repl_data(DBS, REPLWRITE, keydata, keylen, dataData,
datalen, MAX_ALLOWED_THREADS - 2);
}
}
}
void bin_write(int database, void *keydata, int keylen,
void *dataData, int datalen)
{
TCHDB *db;
int ecode;
db = tc_set_hashdb(database);
if (!tchdbput(db, keydata, keylen, dataData, datalen)) {
ecode = tchdbecode(db);
die_dberr("tchdbput failed : %s", tchdberrmsg(ecode));
}
}
/* 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)
{
BDBCUR *cur;
char *dbkey;
int dbsize;
char *dbvalue;
DAT *statdata;
DDSTAT *filestat = NULL, *lfilestat;
DAT *fname;
DINOINO dinoino;
unsigned long long keynode;
unsigned long long valnode;
unsigned long long *inode;
unsigned long long *curinode;
#ifdef ENABLE_CRYPTO
DAT *decrypted;
#endif
FUNC;
cur = tcbdbcurnew(dbdirent);
if (!tcbdbcurjump(cur, (char *) dinode, dlen)
&& tcbdbecode(dbdirent) != TCESUCCESS) {
tcbdbcurdel(cur);
return NULL;
}
inode = (unsigned long long *) dinode;
/* traverse records */
while (dbkey = tcbdbcurkey(cur, &dbsize)) {
curinode = (unsigned long long *) dbkey;
if (*curinode != *inode) {
//if (0 != memcmp(dbkey, dinode, dlen)) {
s_free(dbkey);
break;
}
dbvalue = tcbdbcurval(cur, &dbsize);
if (dbvalue) {
memcpy(&valnode, dbvalue, sizeof(valnode));
memcpy(&keynode, dbkey, sizeof(keynode));
if (keynode == valnode && keynode != 1) {
s_free(dbvalue);
s_free(dbkey);
tcbdbcurnext(cur);
continue;
}
statdata =
search_dbdata(DBP, &valnode, sizeof(unsigned long long),
NOLOCK);
if (NULL == statdata) {
LINFO("Unable to find file existing in dbp.\n");
tcbdbcurdel(cur);
s_free(dbvalue);
s_free(dbkey);
return NULL;
}
#ifdef ENABLE_CRYPTO
if (config->encryptmeta && config->encryptdata) {
decrypted = lfsdecrypt(statdata);
DATfree(statdata);
statdata = decrypted;
}
#endif
filestat = (DDSTAT *) statdata->data;
s_free(dbvalue);
if (0 != filestat->filename[0]) {
s_free(statdata);
LDEBUG("compare bname %s with filestat->filename %s",
bname, filestat->filename);
if (0 == strcmp(bname, filestat->filename)) {
s_free(dbkey);
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) {
lfilestat = s_zmalloc(sizeof(DDSTAT));
memcpy(lfilestat, statdata->data, statdata->size);
s_free(statdata);
ddstatfree(filestat);
memcpy(&lfilestat->filename, fname->data, fname->size);
lfilestat->filename[fname->size + 1] = 0;
filestat = lfilestat;
DATfree(fname);
s_free(dbkey);
break;
} else
s_free(statdata);
}
ddstatfree(filestat);
filestat = NULL;
}
s_free(dbkey);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
if (filestat) {
LDEBUG("dnode_bname_to_inode : filestat->filename=%s inode %lu",
filestat->filename, filestat->stbuf.st_ino);
} else {
LDEBUG("dnode_bname_to_inode : return NULL");
}
return filestat;
}
// lock is not used with tc
DAT *search_dbdata(int database, void *key, int len, bool lock)
{
TCHDB *tcdb;
DAT *data;
int size;
tcdb = tc_set_hashdb(database);
data = s_malloc(sizeof(DAT));
data->data = tchdbget(tcdb, key, len, &size);
data->size = (unsigned long) size;
if (NULL == data->data) {
LDEBUG("search_dbdata : return NULL");
s_free(data);
data = NULL;
} else
LDEBUG("search_dbdata : return %lu bytes", data->size);
return data;
}
DAT *search_memhash(TCMDB * db, void *key, int len)
{
DAT *data;
int size;
FUNC;
data = s_malloc(sizeof(DAT));
data->data = tcmdbget(db, key, len, &size);
data->size = (unsigned long) size;
if (NULL == data->data) {
LDEBUG("search_memhash : return NULL");
s_free(data);
data = NULL;
} else
LDEBUG("search_memhash : return %lu bytes", data->size);
EFUNC;
return data;
}
int btdelete_curkey(int database, void *key, int keylen, void *kvalue,
int kvallen, const char *msg)
{
TCBDB *db;
BDBCUR *cur;
char *value;
int vsize;
int ksize;
char *dbkey;
int ret = 1;
FUNC;
db = tc_set_btreedb(database);
cur = tcbdbcurnew(db);
if (!tcbdbcurjump(cur, key, keylen)) {
tcbdbcurdel(cur);
return (-ENOENT);
}
/* traverse records */
while (dbkey = tcbdbcurkey(cur, &ksize)) {
if (0 != memcmp(dbkey, key, ksize)) {
s_free(dbkey);
break;
}
value = tcbdbcurval(cur, &vsize);
if (value) {
if (kvallen == vsize) {
if (0 == memcmp(value, kvalue, kvallen)) {
ret = 0;
if (!tcbdbcurout(cur)) {
die_dataerr
("btdelete_curkey : Failed to delete key, this should never happen : caller %s",
msg);
ret = -ENOENT;
}
s_free(value);
s_free(dbkey);
break;
}
}
s_free(value);
}
s_free(dbkey);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
if (config->replication == 1 && config->replication_role == 0) {
if (db == dbdirent) {
write_repl_data(DBDIRENT, REPLDELETECURKEY, key, keylen,
kvalue, kvallen, MAX_ALLOWED_THREADS - 2);
}
if (db == dbl) {
write_repl_data(DBL, REPLDELETECURKEY, key, keylen, kvalue,
kvallen, MAX_ALLOWED_THREADS - 2);
}
if (db == freelist) {
write_repl_data(FREELIST, REPLDELETECURKEY, key, keylen,
kvalue, kvallen, MAX_ALLOWED_THREADS - 2);
}
}
return (ret);
}
/* lock is not used with tc */
DAT *btsearch_keyval(int database, void *key, int keylen, void *val,
int vallen, bool lock)
{
TCBDB *db;
BDBCUR *cur;
char *dbkey;
char *dbvalue;
DAT *ret = NULL;
int size;
FUNC;
db = tc_set_btreedb(database);
cur = tcbdbcurnew(db);
if (!tcbdbcurjump(cur, key, keylen) && tcbdbecode(db) != TCESUCCESS) {
tcbdbcurdel(cur);
return ret;
}
/* traverse records */
while (dbkey = tcbdbcurkey(cur, &size)) {
if (0 != memcmp(dbkey, key, keylen)) {
s_free(dbkey);
break;
}
dbvalue = tcbdbcurval(cur, &size);
if (dbvalue) {
if (val) {
if (vallen == size) {
if (0 == memcmp(val, dbvalue, size)) {
ret = s_zmalloc(sizeof(DAT));
ret->data = s_zmalloc(size + 1);
ret->size = size;
memcpy(ret->data, dbvalue, size);
s_free(dbvalue);
s_free(dbkey);
break;
}
}
} else {
ret = s_zmalloc(sizeof(DAT));
ret->data = s_zmalloc(size + 1);
ret->size = size;
memcpy(ret->data, dbvalue, size);
s_free(dbvalue);
s_free(dbkey);
break;
}
s_free(dbvalue);
}
s_free(dbkey);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
EFUNC;
return ret;
}
/* return 0, 1 or 2 if more then 2 we stop counting */
int count_dirlinks(void *linkstr, int len)
{
BDBCUR *cur;
char *key;
int size;
int count = 0;
cur = tcbdbcurnew(dbl);
if (!tcbdbcurjump(cur, linkstr, len)
&& tcbdbecode(dbl) != TCESUCCESS) {
tcbdbcurdel(cur);
return (-ENOENT);
}
/* traverse records */
while (key = tcbdbcurkey(cur, &size)) {
if (len == size) {
if (0 == memcmp(key, linkstr, len)) {
count++;
}
}
s_free(key);
tcbdbcurnext(cur);
if (count > 1)
break;
}