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Revision 1.5, Tue Oct 27 23:59:47 2009 UTC (14 years, 7 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_5_6_BASE, OPENBSD_5_6, OPENBSD_5_5_BASE, OPENBSD_5_5, OPENBSD_5_4_BASE, OPENBSD_5_4, OPENBSD_5_3_BASE, OPENBSD_5_3, OPENBSD_5_2_BASE, OPENBSD_5_2, OPENBSD_5_1_BASE, OPENBSD_5_1, OPENBSD_5_0_BASE, OPENBSD_5_0, OPENBSD_4_9_BASE, OPENBSD_4_9, OPENBSD_4_8_BASE, OPENBSD_4_8, OPENBSD_4_7_BASE, OPENBSD_4_7
Changes since 1.4: +1 -5 lines 

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: ex_preserve.c,v 1.5 2009/10/27 23:59:47 deraadt Exp $	*/

/*-
 * Copyright (c) 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1993, 1994, 1995, 1996
 *	Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/queue.h>

#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>

#include "../common/common.h"

/*
 * ex_preserve -- :pre[serve]
 *	Push the file to recovery.
 *
 * PUBLIC: int ex_preserve(SCR *, EXCMD *);
 */
int
ex_preserve(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	recno_t lno;

	NEEDFILE(sp, cmdp);

	if (!F_ISSET(sp->ep, F_RCV_ON)) {
		msgq(sp, M_ERR, "142|Preservation of this file not possible");
		return (1);
	}

	/* If recovery not initialized, do so. */
	if (F_ISSET(sp->ep, F_FIRSTMODIFY) && rcv_init(sp))
		return (1);

	/* Force the file to be read in, in case it hasn't yet. */
	if (db_last(sp, &lno))
		return (1);

	/* Sync to disk. */
	if (rcv_sync(sp, RCV_SNAPSHOT))
		return (1);

	msgq(sp, M_INFO, "143|File preserved");
	return (0);
}

/*
 * ex_recover -- :rec[over][!] file
 *	Recover the file.
 *
 * PUBLIC: int ex_recover(SCR *, EXCMD *);
 */
int
ex_recover(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	ARGS *ap;
	FREF *frp;

	ap = cmdp->argv[0];

	/* Set the alternate file name. */
	set_alt_name(sp, ap->bp);

	/*
	 * Check for modifications.  Autowrite did not historically
	 * affect :recover.
	 */
	if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE)))
		return (1);

	/* Get a file structure for the file. */
	if ((frp = file_add(sp, ap->bp)) == NULL)
		return (1);

	/* Set the recover bit. */
	F_SET(frp, FR_RECOVER);

	/* Switch files. */
	if (file_init(sp, frp, NULL, FS_SETALT |
	    (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0)))
		return (1);

	F_SET(sp, SC_FSWITCH);
	return (0);
}