libdb-sys 0.1.1

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996, 2012 Oracle and/or its affiliates.  All rights reserved.
 *
 * $Id$
 */

#include "db_config.h"

#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/db_am.h"
#include "dbinc/lock.h"

static int __log_print_dbregister __P((ENV *, DBT *, DB_LOG *));

/*
 * PUBLIC: int __log_print_record  __P((ENV *,
 * PUBLIC:      DBT *, DB_LSN *, char *, DB_LOG_RECSPEC *, void *));
 */
int
__log_print_record(env, recbuf, lsnp, name, spec, info)
	ENV *env;
	DBT *recbuf;
	DB_LSN *lsnp;
	char *name;
	DB_LOG_RECSPEC *spec;
	void *info;
{
	DB *dbp;
	DBT dbt;
	DB_LOG_RECSPEC *sp, *np;
	DB_LOG *dblp;
	DB_LSN prev_lsn;
	DB_MSGBUF msgbuf;
	LOG *lp;
	PAGE *hdrstart, *hdrtmp;
	int32_t inttmp;
	u_int32_t hdrsize, op, uinttmp;
	u_int32_t type, txnid;
	u_int8_t *bp, *datatmp;
	int has_data, ret, downrev;
	struct tm *lt;
	time_t timeval;
	char time_buf[CTIME_BUFLEN], *s;
	const char *hdrname;

	COMPQUIET(hdrstart, NULL);
	COMPQUIET(hdrname, NULL);
	COMPQUIET(hdrsize, 0);
	COMPQUIET(has_data, 0);
	COMPQUIET(op, 0);

	bp = recbuf->data;
	dblp = info;
	dbp = NULL;
	lp = env->lg_handle->reginfo.primary;
	downrev = lp->persist.version < DB_LOGVERSION_50;
	DB_MSGBUF_INIT(&msgbuf);

	/*
	 * The first three fields are always the same in every arg
	 * struct so we know their offsets.
	 */
	/* type */
	LOGCOPY_32(env, &type, bp);
	bp += sizeof(u_int32_t);

	/* txnp */
	LOGCOPY_32(env, &txnid, bp);
	bp += sizeof(txnid);

	/* Previous LSN */
	LOGCOPY_TOLSN(env,&prev_lsn, bp);
	bp += sizeof(DB_LSN);
	__db_msgadd(env, &msgbuf,
    "[%lu][%lu]%s%s: rec: %lu txnp %lx prevlsn [%lu][%lu]\n",
	    (u_long)lsnp->file, (u_long)lsnp->offset,
	    name, (type & DB_debug_FLAG) ? "_debug" : "",
	    (u_long)type,
	    (u_long)txnid,
	    (u_long)prev_lsn.file, (u_long)prev_lsn.offset);

	for (sp = spec; sp->type != LOGREC_Done; sp++) {
		switch (sp->type) {
		case LOGREC_OP:
			LOGCOPY_32(env, &op, bp);
			__db_msgadd(env, &msgbuf,  "\t%s: ", sp->name);
			__db_msgadd(env, &msgbuf,  sp->fmt, OP_MODE_GET(op));
			__db_msgadd(env, &msgbuf,  " ptype: %s\n",
			    __db_pagetype_to_string(OP_PAGE_GET(op)));
			bp += sizeof(uinttmp);
			break;
		case LOGREC_DB:
			LOGCOPY_32(env, &inttmp, bp);
			__db_msgadd(env, &msgbuf,  "\t%s: %lu\n",
			    sp->name, (unsigned long)inttmp);
			bp += sizeof(inttmp);
			if (dblp != NULL && inttmp < dblp->dbentry_cnt)
				dbp = dblp->dbentry[inttmp].dbp;
			break;

		case LOGREC_DBOP:
			/* Special op for dbreg_register records. */
			if (dblp != NULL && (ret =
			    __log_print_dbregister(env, recbuf, dblp)) != 0)
				return (ret);
			LOGCOPY_32(env, &uinttmp, bp);
			switch (FLD_ISSET(uinttmp, DBREG_OP_MASK)) {
			case DBREG_CHKPNT:
				s = "CHKPNT";
				break;
			case DBREG_CLOSE:
				s = "CLOSE";
				break;
			case DBREG_OPEN:
				s = "OPEN";
				break;
			case DBREG_PREOPEN:
				s = "PREOPEN";
				break;
			case DBREG_RCLOSE:
				s = "RCLOSE";
				break;
			case DBREG_REOPEN:
				s = "REOPEN";
				break;
			case DBREG_XCHKPNT:
				s = "XCHKPNT";
				break;
			case DBREG_XOPEN:
				s = "XOPEN";
				break;
			case DBREG_XREOPEN:
				s = "XREOPEN";
				break;
			default:
				s = "UNKNOWN";
				break;
			}
			__db_msgadd(env, &msgbuf,  "\t%s: %s %lx\n", sp->name,
			    s, (unsigned long)(uinttmp & ~DBREG_OP_MASK));
			bp += sizeof(uinttmp);
			break;
		case LOGREC_ARG:
			LOGCOPY_32(env, &uinttmp, bp);
			__db_msgadd(env, &msgbuf,  "\t%s: ", sp->name);
			__db_msgadd(env, &msgbuf,  sp->fmt, uinttmp);
			__db_msgadd(env, &msgbuf,  "\n");
			bp += sizeof(uinttmp);
			break;
		case LOGREC_TIME:
			/* time_t is long but we only store 32 bits. */
			LOGCOPY_32(env, &uinttmp, bp);
			timeval = uinttmp;
			lt = localtime(&timeval);
			__db_msgadd(env, &msgbuf,
		    "\t%s: %ld (%.24s, 20%02lu%02lu%02lu%02lu%02lu.%02lu)\n",
			    sp->name, (long)timeval,
			    __os_ctime(&timeval, time_buf),
			    (u_long)lt->tm_year - 100, (u_long)lt->tm_mon+1,
			    (u_long)lt->tm_mday, (u_long)lt->tm_hour,
			    (u_long)lt->tm_min, (u_long)lt->tm_sec);
			bp += sizeof(uinttmp);
			break;
		case LOGREC_PGDBT:
		case LOGREC_PGDDBT:
		case LOGREC_PGLIST:
		case LOGREC_LOCKS:
		case LOGREC_HDR:
		case LOGREC_DATA:
		case LOGREC_DBT:
			LOGCOPY_32(env, &uinttmp, bp);
			bp += sizeof(u_int32_t);
			switch (sp->type) {
			case LOGREC_HDR:
				if (uinttmp == 0)
					break;
				has_data = 0;
				for (np = sp + 1; np->type != LOGREC_Done; np++)
					if (np->type == LOGREC_DATA) {
						has_data = 1;
						break;
					}

				hdrstart = (PAGE*)bp;
				hdrsize = uinttmp;
				hdrname = sp->name;
				if (has_data == 1)
					break;
				/* FALLTHROUGH */
			case LOGREC_DATA:
				if (downrev ? LOG_SWAPPED(env) :
				    (dbp != NULL  && F_ISSET(dbp, DB_AM_SWAP)))
					__db_recordswap(op, hdrsize, hdrstart,
					    (has_data && uinttmp != 0) ?
					    bp : NULL, 1);
				__db_msgadd(env, &msgbuf,  "\t%s: ", hdrname);
				__db_prbytes(env, &msgbuf,
				    (u_int8_t *)hdrstart, hdrsize);
				if (has_data == 0 || uinttmp == 0)
					break;
				/* FALLTHROUGH */
			default:
				__db_msgadd(env, &msgbuf,  "\t%s: ", sp->name);
			pr_data:
				__db_prbytes(env, &msgbuf, bp, uinttmp);
				has_data = 0;
				break;
			case LOGREC_PGDBT:
				has_data = 0;
				for (np = sp + 1; np->type != LOGREC_Done; np++)
					if (np->type == LOGREC_PGDDBT) {
						has_data = 1;
						break;
					}

				hdrstart = (PAGE*)bp;
				hdrsize = uinttmp;
				if (has_data == 1)
					break;
				/* FALLTHROUGH */
			case LOGREC_PGDDBT:
				DB_ASSERT(env, hdrstart != NULL);
				if (dbp != NULL && (downrev ? LOG_SWAPPED(env) :
				    F_ISSET(dbp, DB_AM_SWAP))) {
					dbt.data = bp;
					dbt.size = uinttmp;
					if ((ret = __db_pageswap(env, dbp,
					    hdrstart, hdrsize, has_data == 0 ?
					    NULL : &dbt, 1)) != 0)
						return (ret);
				}
				if (downrev)
					goto pr_data;
				if (ALIGNP_INC(hdrstart,
				    sizeof(u_int32_t)) != hdrstart) {
					if ((ret = __os_malloc(env,
					    hdrsize, &hdrtmp)) != 0)
						return (ret);
					memcpy(hdrtmp, hdrstart, hdrsize);
				} else
					hdrtmp = hdrstart;
				if (has_data == 1 && ALIGNP_INC(bp,
				    sizeof(u_int32_t)) != bp) {
					if ((ret = __os_malloc(env,
					    uinttmp, &datatmp)) != 0)
						return (ret);
					memcpy(datatmp, bp, uinttmp);
				} else if (has_data == 1)
					datatmp = bp;
				else
					datatmp = NULL;
				if ((ret = __db_prpage_int(env, &msgbuf,
				    dbp, "\t", hdrtmp,
				    uinttmp, datatmp, DB_PR_PAGE)) != 0)
					return (ret);
				has_data = 0;
				if (hdrtmp != hdrstart)
					__os_free(env, hdrtmp);
				if (datatmp != bp && datatmp != NULL)
					__os_free(env, datatmp);
				break;
			case LOGREC_PGLIST:
				dbt.data = bp;
				dbt.size = uinttmp;
				__db_pglist_print(env, &msgbuf, &dbt);
				break;
			case LOGREC_LOCKS:
				dbt.data = bp;
				dbt.size = uinttmp;
				__lock_list_print(env, &msgbuf, &dbt);
				break;
			}
			bp += uinttmp;
			break;

		case LOGREC_POINTER:
			LOGCOPY_TOLSN(env, &prev_lsn, bp);
			__db_msgadd(env, &msgbuf,
			    "\t%s: [%lu][%lu]\n", sp->name,
			    (u_long)prev_lsn.file, (u_long)prev_lsn.offset);
			bp += sizeof(DB_LSN);
			break;
		case LOGREC_Done:
			DB_ASSERT(env, sp->type != LOGREC_Done);
		}
	}
	if (msgbuf.buf != NULL)
		DB_MSGBUF_FLUSH(env, &msgbuf);
	else
		__db_msg(env, "%s", "");
	return (0);
}

/*
 * __log_print_dbregister --
 *	So that we can properly swap and print information from databases
 * we generate dummy DB handles here.  These are real handles that are never
 * opened but their fileid, meta_pgno and some flags are set properly.
 * This code uses parallel structures to those in the dbregister code.
 * The DB_LOG handle passed in must NOT be the real environment handle
 * since this would confuse actual running transactions if printing is
 * done while the environment is active.
 */
static int
__log_print_dbregister(env, recbuf, dblp)
	ENV *env;
	DBT *recbuf;
	DB_LOG *dblp;
{
	__dbreg_register_args *argp;
	DB *dbp;
	DB_ENTRY *dbe;
	int ret;

	if ((ret = __dbreg_register_read(env, recbuf->data, &argp)) != 0)
		return (ret);

	if (dblp->dbentry_cnt <= argp->fileid &&
	    (ret = __dbreg_add_dbentry(env, dblp, NULL, argp->fileid)) != 0)
			goto err;
	dbe = &dblp->dbentry[argp->fileid];
	dbp = dbe->dbp;

	switch (FLD_ISSET(argp->opcode, DBREG_OP_MASK)) {
	case DBREG_CHKPNT:
	case DBREG_OPEN:
	case DBREG_REOPEN:
	case DBREG_XCHKPNT:
	case DBREG_XOPEN:
	case DBREG_XREOPEN:
		if (dbp != NULL) {
			if (memcmp(dbp->fileid,
			    argp->uid.data, DB_FILE_ID_LEN) == 0 &&
			    dbp->meta_pgno == argp->meta_pgno)
				goto done;
			if ((__db_close(dbp, NULL, DB_NOSYNC)) != 0)
				goto err;
			dbe->dbp = dbp = NULL;
		}
		if ((ret = __db_create_internal(&dbp, env, 0)) != 0)
			goto err;
		memcpy(dbp->fileid, argp->uid.data, DB_FILE_ID_LEN);
		dbp->meta_pgno = argp->meta_pgno;
		F_SET(dbp, DB_AM_RECOVER);
		/*
		 * We need to swap bytes if we are on a BIGEND machine XOR
		 *	we have a BIGEND database.
		 */
		if ((F_ISSET(env, ENV_LITTLEENDIAN) == 0) ^
		    (FLD_ISSET(argp->opcode, DBREG_BIGEND) != 0))
			F_SET(dbp, DB_AM_SWAP);
		if (FLD_ISSET(argp->opcode, DBREG_CHKSUM))
			F_SET(dbp, DB_AM_CHKSUM);
		if (FLD_ISSET(argp->opcode, DBREG_ENCRYPT))
			F_SET(dbp, DB_AM_ENCRYPT);
		if (FLD_ISSET(argp->opcode, DBREG_EXCL))
			F2_SET(dbp, DB2_AM_EXCL);
		dbe->dbp = dbp;
		break;
	case DBREG_CLOSE:
	case DBREG_RCLOSE:
		if (dbp == NULL)
			goto err;
		if ((__db_close(dbp, NULL, DB_NOSYNC)) != 0)
			goto err;
		dbe->dbp = dbp = NULL;
		break;
	case DBREG_PREOPEN:
		break;
	default:
		DB_ASSERT(env, argp->opcode != argp->opcode);
	}
done:
err:
	__os_free(env, argp);
	return (ret);
}