1 /* $OpenBSD: ex_preserve.c,v 1.7 2016/01/06 22:28:52 millert Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 1993, 1994, 1995, 1996 7 * Keith Bostic. All rights reserved. 8 * 9 * See the LICENSE file for redistribution information. 10 */ 11 12 #include "config.h" 13 14 #include <sys/types.h> 15 #include <sys/queue.h> 16 17 #include <bitstring.h> 18 #include <errno.h> 19 #include <limits.h> 20 #include <stdio.h> 21 #include <string.h> 22 23 #include "../common/common.h" 24 25 /* 26 * ex_preserve -- :pre[serve] 27 * Push the file to recovery. 28 * 29 * PUBLIC: int ex_preserve(SCR *, EXCMD *); 30 */ 31 int 32 ex_preserve(SCR *sp, EXCMD *cmdp) 33 { 34 recno_t lno; 35 36 NEEDFILE(sp, cmdp); 37 38 if (!F_ISSET(sp->ep, F_RCV_ON)) { 39 msgq(sp, M_ERR, "Preservation of this file not possible"); 40 return (1); 41 } 42 43 /* If recovery not initialized, do so. */ 44 if (F_ISSET(sp->ep, F_FIRSTMODIFY) && rcv_init(sp)) 45 return (1); 46 47 /* Force the file to be read in, in case it hasn't yet. */ 48 if (db_last(sp, &lno)) 49 return (1); 50 51 /* Sync to disk. */ 52 if (rcv_sync(sp, RCV_SNAPSHOT)) 53 return (1); 54 55 msgq(sp, M_INFO, "File preserved"); 56 return (0); 57 } 58 59 /* 60 * ex_recover -- :rec[over][!] file 61 * Recover the file. 62 * 63 * PUBLIC: int ex_recover(SCR *, EXCMD *); 64 */ 65 int 66 ex_recover(SCR *sp, EXCMD *cmdp) 67 { 68 ARGS *ap; 69 FREF *frp; 70 71 ap = cmdp->argv[0]; 72 73 /* Set the alternate file name. */ 74 set_alt_name(sp, ap->bp); 75 76 /* 77 * Check for modifications. Autowrite did not historically 78 * affect :recover. 79 */ 80 if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE))) 81 return (1); 82 83 /* Get a file structure for the file. */ 84 if ((frp = file_add(sp, ap->bp)) == NULL) 85 return (1); 86 87 /* Set the recover bit. */ 88 F_SET(frp, FR_RECOVER); 89 90 /* Switch files. */ 91 if (file_init(sp, frp, NULL, FS_SETALT | 92 (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0))) 93 return (1); 94 95 F_SET(sp, SC_FSWITCH); 96 return (0); 97 } 98