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