itime.c revision 74872
11558Srgrimes/*- 21558Srgrimes * Copyright (c) 1980, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * Redistribution and use in source and binary forms, with or without 61558Srgrimes * modification, are permitted provided that the following conditions 71558Srgrimes * are met: 81558Srgrimes * 1. Redistributions of source code must retain the above copyright 91558Srgrimes * notice, this list of conditions and the following disclaimer. 101558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111558Srgrimes * notice, this list of conditions and the following disclaimer in the 121558Srgrimes * documentation and/or other materials provided with the distribution. 131558Srgrimes * 3. All advertising materials mentioning features or use of this software 141558Srgrimes * must display the following acknowledgement: 151558Srgrimes * This product includes software developed by the University of 161558Srgrimes * California, Berkeley and its contributors. 171558Srgrimes * 4. Neither the name of the University nor the names of its contributors 181558Srgrimes * may be used to endorse or promote products derived from this software 191558Srgrimes * without specific prior written permission. 201558Srgrimes * 211558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311558Srgrimes * SUCH DAMAGE. 321558Srgrimes */ 331558Srgrimes 341558Srgrimes#ifndef lint 3536997Scharnier#if 0 361558Srgrimesstatic char sccsid[] = "@(#)itime.c 8.1 (Berkeley) 6/5/93"; 3736997Scharnier#endif 3836997Scharnierstatic const char rcsid[] = 3950476Speter "$FreeBSD: head/sbin/dump/itime.c 74872 2001-03-27 19:28:00Z obrien $"; 401558Srgrimes#endif /* not lint */ 411558Srgrimes 421558Srgrimes#include <sys/param.h> 4371787Sphk#include <sys/queue.h> 441558Srgrimes#include <sys/time.h> 451558Srgrimes#ifdef sunos 461558Srgrimes#include <sys/vnode.h> 471558Srgrimes 481558Srgrimes#include <ufs/fsdir.h> 491558Srgrimes#include <ufs/inode.h> 501558Srgrimes#include <ufs/fs.h> 511558Srgrimes#else 521558Srgrimes#include <ufs/ufs/dinode.h> 531558Srgrimes#endif 541558Srgrimes 551558Srgrimes#include <protocols/dumprestore.h> 561558Srgrimes 571558Srgrimes#include <errno.h> 581558Srgrimes#include <fcntl.h> 591558Srgrimes#include <stdio.h> 601558Srgrimes#ifdef __STDC__ 611558Srgrimes#include <stdlib.h> 621558Srgrimes#include <string.h> 631558Srgrimes#endif 641558Srgrimes 651558Srgrimes#include "dump.h" 661558Srgrimes 6771787Sphkstruct dumptime { 6871787Sphk struct dumpdates dt_value; 6971787Sphk SLIST_ENTRY(dumptime) dt_list; 7071787Sphk}; 7171787SphkSLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead); 721558Srgrimesstruct dumpdates **ddatev = 0; 731558Srgrimesint nddates = 0; 741558Srgrimesint ddates_in = 0; 751558Srgrimes 761558Srgrimesstatic void dumprecout __P((FILE *, struct dumpdates *)); 771558Srgrimesstatic int getrecord __P((FILE *, struct dumpdates *)); 781558Srgrimesstatic int makedumpdate __P((struct dumpdates *, char *)); 791558Srgrimesstatic void readdumptimes __P((FILE *)); 801558Srgrimes 811558Srgrimesvoid 821558Srgrimesinitdumptimes() 831558Srgrimes{ 841558Srgrimes FILE *df; 851558Srgrimes 861558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 871558Srgrimes if (errno != ENOENT) { 8874872Sobrien msg("cannot read %s: %s\n", dumpdates, 891558Srgrimes strerror(errno)); 9074872Sobrien return; 911558Srgrimes /* NOTREACHED */ 921558Srgrimes } 931558Srgrimes /* 941558Srgrimes * Dumpdates does not exist, make an empty one. 951558Srgrimes */ 961558Srgrimes msg("WARNING: no file `%s', making an empty one\n", dumpdates); 971558Srgrimes if ((df = fopen(dumpdates, "w")) == NULL) { 9874872Sobrien msg("cannot create %s: %s\n", dumpdates, 991558Srgrimes strerror(errno)); 10074872Sobrien return; 1011558Srgrimes /* NOTREACHED */ 1021558Srgrimes } 1031558Srgrimes (void) fclose(df); 1041558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 1051558Srgrimes quit("cannot read %s even after creating it: %s\n", 1061558Srgrimes dumpdates, strerror(errno)); 1071558Srgrimes /* NOTREACHED */ 1081558Srgrimes } 1091558Srgrimes } 1101558Srgrimes (void) flock(fileno(df), LOCK_SH); 1111558Srgrimes readdumptimes(df); 1121558Srgrimes (void) fclose(df); 1131558Srgrimes} 1141558Srgrimes 1151558Srgrimesstatic void 1161558Srgrimesreaddumptimes(df) 1171558Srgrimes FILE *df; 1181558Srgrimes{ 1191558Srgrimes register int i; 1201558Srgrimes register struct dumptime *dtwalk; 1211558Srgrimes 1221558Srgrimes for (;;) { 1231558Srgrimes dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime)); 1241558Srgrimes if (getrecord(df, &(dtwalk->dt_value)) < 0) 1251558Srgrimes break; 1261558Srgrimes nddates++; 12771787Sphk SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list); 1281558Srgrimes } 1291558Srgrimes 1301558Srgrimes ddates_in = 1; 1311558Srgrimes /* 1321558Srgrimes * arrayify the list, leaving enough room for the additional 1331558Srgrimes * record that we may have to add to the ddate structure 1341558Srgrimes */ 1351558Srgrimes ddatev = (struct dumpdates **) 1361558Srgrimes calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *)); 13771787Sphk dtwalk = SLIST_FIRST(&dthead); 13871787Sphk for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list)) 1391558Srgrimes ddatev[i] = &dtwalk->dt_value; 1401558Srgrimes} 1411558Srgrimes 1421558Srgrimesvoid 1431558Srgrimesgetdumptime() 1441558Srgrimes{ 1451558Srgrimes register struct dumpdates *ddp; 1461558Srgrimes register int i; 1471558Srgrimes char *fname; 1481558Srgrimes 1491558Srgrimes fname = disk; 1501558Srgrimes#ifdef FDEBUG 1511558Srgrimes msg("Looking for name %s in dumpdates = %s for level = %c\n", 1521558Srgrimes fname, dumpdates, level); 1531558Srgrimes#endif 1541558Srgrimes spcl.c_ddate = 0; 1551558Srgrimes lastlevel = '0'; 1561558Srgrimes 1571558Srgrimes initdumptimes(); 1581558Srgrimes /* 1591558Srgrimes * Go find the entry with the same name for a lower increment 1601558Srgrimes * and older date 1611558Srgrimes */ 1621558Srgrimes ITITERATE(i, ddp) { 1631558Srgrimes if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0) 1641558Srgrimes continue; 1651558Srgrimes if (ddp->dd_level >= level) 1661558Srgrimes continue; 1671558Srgrimes if (ddp->dd_ddate <= spcl.c_ddate) 1681558Srgrimes continue; 1691558Srgrimes spcl.c_ddate = ddp->dd_ddate; 1701558Srgrimes lastlevel = ddp->dd_level; 1711558Srgrimes } 1721558Srgrimes} 1731558Srgrimes 1741558Srgrimesvoid 1751558Srgrimesputdumptime() 1761558Srgrimes{ 1771558Srgrimes FILE *df; 1781558Srgrimes register struct dumpdates *dtwalk; 1791558Srgrimes register int i; 1801558Srgrimes int fd; 1811558Srgrimes char *fname; 1821558Srgrimes 1831558Srgrimes if(uflag == 0) 1841558Srgrimes return; 1851558Srgrimes if ((df = fopen(dumpdates, "r+")) == NULL) 1861558Srgrimes quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno)); 1871558Srgrimes fd = fileno(df); 1881558Srgrimes (void) flock(fd, LOCK_EX); 1891558Srgrimes fname = disk; 1901558Srgrimes free((char *)ddatev); 1911558Srgrimes ddatev = 0; 1921558Srgrimes nddates = 0; 1931558Srgrimes ddates_in = 0; 1941558Srgrimes readdumptimes(df); 1951558Srgrimes if (fseek(df, 0L, 0) < 0) 1961558Srgrimes quit("fseek: %s\n", strerror(errno)); 1971558Srgrimes spcl.c_ddate = 0; 1981558Srgrimes ITITERATE(i, dtwalk) { 1991558Srgrimes if (strncmp(fname, dtwalk->dd_name, 2001558Srgrimes sizeof (dtwalk->dd_name)) != 0) 2011558Srgrimes continue; 2021558Srgrimes if (dtwalk->dd_level != level) 2031558Srgrimes continue; 2041558Srgrimes goto found; 2051558Srgrimes } 2061558Srgrimes /* 2071558Srgrimes * construct the new upper bound; 2081558Srgrimes * Enough room has been allocated. 2091558Srgrimes */ 2101558Srgrimes dtwalk = ddatev[nddates] = 2111558Srgrimes (struct dumpdates *)calloc(1, sizeof (struct dumpdates)); 2121558Srgrimes nddates += 1; 2131558Srgrimes found: 2141558Srgrimes (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name)); 2151558Srgrimes dtwalk->dd_level = level; 2161558Srgrimes dtwalk->dd_ddate = spcl.c_date; 2171558Srgrimes 2181558Srgrimes ITITERATE(i, dtwalk) { 2191558Srgrimes dumprecout(df, dtwalk); 2201558Srgrimes } 2211558Srgrimes if (fflush(df)) 2221558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2231558Srgrimes if (ftruncate(fd, ftell(df))) 2241558Srgrimes quit("ftruncate (%s): %s\n", dumpdates, strerror(errno)); 2251558Srgrimes (void) fclose(df); 2261558Srgrimes msg("level %c dump on %s", level, 2271558Srgrimes spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 2281558Srgrimes} 2291558Srgrimes 2301558Srgrimesstatic void 2311558Srgrimesdumprecout(file, what) 2321558Srgrimes FILE *file; 2331558Srgrimes struct dumpdates *what; 2341558Srgrimes{ 2351558Srgrimes 2361558Srgrimes if (fprintf(file, DUMPOUTFMT, 2371558Srgrimes what->dd_name, 2381558Srgrimes what->dd_level, 2391558Srgrimes ctime(&what->dd_ddate)) < 0) 2401558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2411558Srgrimes} 2421558Srgrimes 2431558Srgrimesint recno; 2441558Srgrimes 2451558Srgrimesstatic int 2461558Srgrimesgetrecord(df, ddatep) 2471558Srgrimes FILE *df; 2481558Srgrimes struct dumpdates *ddatep; 2491558Srgrimes{ 2501558Srgrimes char tbuf[BUFSIZ]; 2511558Srgrimes 2521558Srgrimes recno = 0; 2531558Srgrimes if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf) 2541558Srgrimes return(-1); 2551558Srgrimes recno++; 2561558Srgrimes if (makedumpdate(ddatep, tbuf) < 0) 2571558Srgrimes msg("Unknown intermediate format in %s, line %d\n", 2581558Srgrimes dumpdates, recno); 2591558Srgrimes 2601558Srgrimes#ifdef FDEBUG 2611558Srgrimes msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level, 2621558Srgrimes ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate)); 2631558Srgrimes#endif 2641558Srgrimes return(0); 2651558Srgrimes} 2661558Srgrimes 2671558Srgrimesstatic int 2681558Srgrimesmakedumpdate(ddp, tbuf) 2691558Srgrimes struct dumpdates *ddp; 2701558Srgrimes char *tbuf; 2711558Srgrimes{ 2721558Srgrimes char un_buf[128]; 2731558Srgrimes 2741558Srgrimes (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf); 2751558Srgrimes ddp->dd_ddate = unctime(un_buf); 2761558Srgrimes if (ddp->dd_ddate < 0) 2771558Srgrimes return(-1); 2781558Srgrimes return(0); 2791558Srgrimes} 280