mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
136 lines
2.7 KiB
C
136 lines
2.7 KiB
C
/* mdb_drop.c - memory-mapped database delete tool */
|
|
/*
|
|
* Copyright 2016-2018 Howard Chu, Symas Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted only as authorized by the OpenLDAP
|
|
* Public License.
|
|
*
|
|
* A copy of this license is available in the file LICENSE in the
|
|
* top-level directory of the distribution or, alternatively, at
|
|
* <http://www.OpenLDAP.org/license.html>.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include "lmdb.h"
|
|
|
|
static volatile sig_atomic_t gotsig;
|
|
|
|
static void dumpsig( int sig )
|
|
{
|
|
gotsig=1;
|
|
}
|
|
|
|
static void usage(char *prog)
|
|
{
|
|
fprintf(stderr, "usage: %s [-V] [-n] [-d] [-s subdb] dbpath\n", prog);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int i, rc;
|
|
MDB_env *env;
|
|
MDB_txn *txn;
|
|
MDB_dbi dbi;
|
|
char *prog = argv[0];
|
|
char *envname;
|
|
char *subname = NULL;
|
|
int envflags = 0, delete = 0;
|
|
|
|
if (argc < 2) {
|
|
usage(prog);
|
|
}
|
|
|
|
/* -d: delete the db, don't just empty it
|
|
* -s: drop the named subDB
|
|
* -n: use NOSUBDIR flag on env_open
|
|
* -V: print version and exit
|
|
* (default) empty the main DB
|
|
*/
|
|
while ((i = getopt(argc, argv, "dns:V")) != EOF) {
|
|
switch(i) {
|
|
case 'V':
|
|
printf("%s\n", MDB_VERSION_STRING);
|
|
exit(0);
|
|
break;
|
|
case 'd':
|
|
delete = 1;
|
|
break;
|
|
case 'n':
|
|
envflags |= MDB_NOSUBDIR;
|
|
break;
|
|
case 's':
|
|
subname = optarg;
|
|
break;
|
|
default:
|
|
usage(prog);
|
|
}
|
|
}
|
|
|
|
if (optind != argc - 1)
|
|
usage(prog);
|
|
|
|
#ifdef SIGPIPE
|
|
signal(SIGPIPE, dumpsig);
|
|
#endif
|
|
#ifdef SIGHUP
|
|
signal(SIGHUP, dumpsig);
|
|
#endif
|
|
signal(SIGINT, dumpsig);
|
|
signal(SIGTERM, dumpsig);
|
|
|
|
envname = argv[optind];
|
|
rc = mdb_env_create(&env);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
mdb_env_set_maxdbs(env, 2);
|
|
|
|
rc = mdb_env_open(env, envname, envflags, 0664);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
goto env_close;
|
|
}
|
|
|
|
rc = mdb_txn_begin(env, NULL, 0, &txn);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
goto env_close;
|
|
}
|
|
|
|
rc = mdb_open(txn, subname, 0, &dbi);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_open failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
goto txn_abort;
|
|
}
|
|
|
|
rc = mdb_drop(txn, dbi, delete);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_drop failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
goto txn_abort;
|
|
}
|
|
rc = mdb_txn_commit(txn);
|
|
if (rc) {
|
|
fprintf(stderr, "mdb_txn_commit failed, error %d %s\n", rc, mdb_strerror(rc));
|
|
goto txn_abort;
|
|
}
|
|
txn = NULL;
|
|
|
|
txn_abort:
|
|
if (txn)
|
|
mdb_txn_abort(txn);
|
|
env_close:
|
|
mdb_env_close(env);
|
|
|
|
return rc ? EXIT_FAILURE : EXIT_SUCCESS;
|
|
}
|