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[] = "@(#)ex_preserve.c 10.12 (Berkeley) 4/27/96"; 14 #endif /* not lint */ 15 16 #include <sys/types.h> 17 #include <sys/queue.h> 18 19 #include <bitstring.h> 20 #include <errno.h> 21 #include <limits.h> 22 #include <stdio.h> 23 #include <string.h> 24 25 #include "../common/common.h" 26 27 /* 28 * ex_preserve -- :pre[serve] 29 * Push the file to recovery. 30 * 31 * PUBLIC: int ex_preserve __P((SCR *, EXCMD *)); 32 */ 33 int 34 ex_preserve(sp, cmdp) 35 SCR *sp; 36 EXCMD *cmdp; 37 { 38 recno_t lno; 39 40 NEEDFILE(sp, cmdp); 41 42 if (!F_ISSET(sp->ep, F_RCV_ON)) { 43 msgq(sp, M_ERR, "142|Preservation of this file not possible"); 44 return (1); 45 } 46 47 /* If recovery not initialized, do so. */ 48 if (F_ISSET(sp->ep, F_FIRSTMODIFY) && rcv_init(sp)) 49 return (1); 50 51 /* Force the file to be read in, in case it hasn't yet. */ 52 if (db_last(sp, &lno)) 53 return (1); 54 55 /* Sync to disk. */ 56 if (rcv_sync(sp, RCV_SNAPSHOT)) 57 return (1); 58 59 msgq(sp, M_INFO, "143|File preserved"); 60 return (0); 61 } 62 63 /* 64 * ex_recover -- :rec[over][!] file 65 * Recover the file. 66 * 67 * PUBLIC: int ex_recover __P((SCR *, EXCMD *)); 68 */ 69 int 70 ex_recover(sp, cmdp) 71 SCR *sp; 72 EXCMD *cmdp; 73 { 74 ARGS *ap; 75 FREF *frp; 76 77 ap = cmdp->argv[0]; 78 79 /* Set the alternate file name. */ 80 set_alt_name(sp, ap->bp); 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 if ((frp = file_add(sp, ap->bp)) == NULL) 91 return (1); 92 93 /* Set the recover bit. */ 94 F_SET(frp, FR_RECOVER); 95 96 /* Switch files. */ 97 if (file_init(sp, frp, NULL, FS_SETALT | 98 (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0))) 99 return (1); 100 101 F_SET(sp, SC_FSWITCH); 102 return (0); 103 } 104