1 /* $NetBSD: ex_preserve.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */ 2 /*- 3 * Copyright (c) 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 */ 10 11 #include "config.h" 12 13 #include <sys/cdefs.h> 14 #if 0 15 #ifndef lint 16 static const char sccsid[] = "Id: ex_preserve.c,v 10.15 2001/06/25 15:19:18 skimo Exp (Berkeley) Date: 2001/06/25 15:19:18 "; 17 #endif /* not lint */ 18 #else 19 __RCSID("$NetBSD: ex_preserve.c,v 1.3 2014/01/26 21:43:45 christos Exp $"); 20 #endif 21 22 #include <sys/types.h> 23 #include <sys/queue.h> 24 25 #include <bitstring.h> 26 #include <errno.h> 27 #include <limits.h> 28 #include <stdio.h> 29 #include <string.h> 30 31 #include "../common/common.h" 32 33 /* 34 * ex_preserve -- :pre[serve] 35 * Push the file to recovery. 36 * 37 * PUBLIC: int ex_preserve __P((SCR *, EXCMD *)); 38 */ 39 int 40 ex_preserve(SCR *sp, EXCMD *cmdp) 41 { 42 db_recno_t lno; 43 44 NEEDFILE(sp, cmdp); 45 46 if (!F_ISSET(sp->ep, F_RCV_ON)) { 47 msgq(sp, M_ERR, "142|Preservation of this file not possible"); 48 return (1); 49 } 50 51 /* If recovery not initialized, do so. */ 52 if (F_ISSET(sp->ep, F_FIRSTMODIFY) && rcv_init(sp)) 53 return (1); 54 55 /* Force the file to be read in, in case it hasn't yet. */ 56 if (db_last(sp, &lno)) 57 return (1); 58 59 /* Sync to disk. */ 60 if (rcv_sync(sp, RCV_SNAPSHOT)) 61 return (1); 62 63 msgq(sp, M_INFO, "143|File preserved"); 64 return (0); 65 } 66 67 /* 68 * ex_recover -- :rec[over][!] file 69 * Recover the file. 70 * 71 * PUBLIC: int ex_recover __P((SCR *, EXCMD *)); 72 */ 73 int 74 ex_recover(SCR *sp, EXCMD *cmdp) 75 { 76 ARGS *ap; 77 FREF *frp; 78 const char *np; 79 size_t nlen; 80 81 ap = cmdp->argv[0]; 82 83 /* Set the alternate file name. */ 84 INT2CHAR(sp, ap->bp, ap->len+1, np, nlen); 85 set_alt_name(sp, np); 86 87 /* 88 * Check for modifications. Autowrite did not historically 89 * affect :recover. 90 */ 91 if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE))) 92 return (1); 93 94 /* Get a file structure for the file. */ 95 INT2CHAR(sp, ap->bp, ap->len+1, np, nlen); 96 if ((frp = file_add(sp, np)) == NULL) 97 return (1); 98 99 /* Set the recover bit. */ 100 F_SET(frp, FR_RECOVER); 101 102 /* Switch files. */ 103 if (file_init(sp, frp, NULL, FS_SETALT | 104 (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0))) 105 return (1); 106 107 F_SET(sp, SC_FSWITCH); 108 return (0); 109 } 110