105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
/*-
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* Copyright (c) 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: ex_preserve.c,v 10.15 2001/06/25 15:19:18 skimo Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include "../common/common.h"
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/*
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* ex_preserve -- :pre[serve]
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* Push the file to recovery.
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*
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* PUBLIC: int ex_preserve(SCR *, EXCMD *);
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*/
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int
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ex_preserve(SCR *sp, EXCMD *cmdp)
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{
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recno_t lno;
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NEEDFILE(sp, cmdp);
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if (!F_ISSET(sp->ep, F_RCV_ON)) {
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msgq(sp, M_ERR, "142|Preservation of this file not possible");
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return (1);
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}
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/* If recovery not initialized, do so. */
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if (F_ISSET(sp->ep, F_FIRSTMODIFY) && rcv_init(sp))
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return (1);
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/* Force the file to be read in, in case it hasn't yet. */
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if (db_last(sp, &lno))
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return (1);
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/* Sync to disk. */
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if (rcv_sync(sp, RCV_SNAPSHOT))
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return (1);
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msgq(sp, M_INFO, "143|File preserved");
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return (0);
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}
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/*
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* ex_recover -- :rec[over][!] file
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* Recover the file.
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*
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* PUBLIC: int ex_recover(SCR *, EXCMD *);
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*/
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int
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ex_recover(SCR *sp, EXCMD *cmdp)
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{
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ARGS *ap;
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FREF *frp;
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char *np;
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size_t nlen;
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ap = cmdp->argv[0];
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/* Set the alternate file name. */
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INT2CHAR(sp, ap->bp, ap->len+1, np, nlen);
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set_alt_name(sp, np);
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/*
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* Check for modifications. Autowrite did not historically
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* affect :recover.
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*/
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if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE)))
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return (1);
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/* Get a file structure for the file. */
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INT2CHAR(sp, ap->bp, ap->len+1, np, nlen);
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if ((frp = file_add(sp, np)) == NULL)
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return (1);
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/* Set the recover bit. */
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F_SET(frp, FR_RECOVER);
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/* Switch files. */
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if (file_init(sp, frp, NULL, FS_SETALT |
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(FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0)))
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return (1);
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F_SET(sp, SC_FSWITCH);
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return (0);
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}
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