itime.c revision 92837
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 92837 2002-03-20 22:49:40Z imp $"; 401558Srgrimes#endif /* not lint */ 411558Srgrimes 421558Srgrimes#include <sys/param.h> 4371787Sphk#include <sys/queue.h> 441558Srgrimes#include <sys/time.h> 451558Srgrimes 461558Srgrimes#include <ufs/ufs/dinode.h> 471558Srgrimes 481558Srgrimes#include <protocols/dumprestore.h> 491558Srgrimes 501558Srgrimes#include <errno.h> 511558Srgrimes#include <fcntl.h> 521558Srgrimes#include <stdio.h> 531558Srgrimes#include <stdlib.h> 541558Srgrimes#include <string.h> 551558Srgrimes 561558Srgrimes#include "dump.h" 571558Srgrimes 5871787Sphkstruct dumptime { 5971787Sphk struct dumpdates dt_value; 6071787Sphk SLIST_ENTRY(dumptime) dt_list; 6171787Sphk}; 6271787SphkSLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead); 631558Srgrimesstruct dumpdates **ddatev = 0; 641558Srgrimesint nddates = 0; 651558Srgrimesint ddates_in = 0; 661558Srgrimes 6792837Simpstatic void dumprecout(FILE *, const struct dumpdates *); 6892837Simpstatic int getrecord(FILE *, struct dumpdates *); 6992837Simpstatic int makedumpdate(struct dumpdates *, const char *); 7092837Simpstatic void readdumptimes(FILE *); 711558Srgrimes 721558Srgrimesvoid 7392837Simpinitdumptimes(void) 741558Srgrimes{ 751558Srgrimes FILE *df; 761558Srgrimes 771558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 781558Srgrimes if (errno != ENOENT) { 7974873Sobrien msg("WARNING: cannot read %s: %s\n", dumpdates, 801558Srgrimes strerror(errno)); 8174872Sobrien return; 821558Srgrimes } 831558Srgrimes /* 841558Srgrimes * Dumpdates does not exist, make an empty one. 851558Srgrimes */ 861558Srgrimes msg("WARNING: no file `%s', making an empty one\n", dumpdates); 871558Srgrimes if ((df = fopen(dumpdates, "w")) == NULL) { 8874873Sobrien msg("WARNING: cannot create %s: %s\n", dumpdates, 891558Srgrimes strerror(errno)); 9074872Sobrien return; 911558Srgrimes } 921558Srgrimes (void) fclose(df); 931558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 941558Srgrimes quit("cannot read %s even after creating it: %s\n", 951558Srgrimes dumpdates, strerror(errno)); 961558Srgrimes /* NOTREACHED */ 971558Srgrimes } 981558Srgrimes } 991558Srgrimes (void) flock(fileno(df), LOCK_SH); 1001558Srgrimes readdumptimes(df); 1011558Srgrimes (void) fclose(df); 1021558Srgrimes} 1031558Srgrimes 1041558Srgrimesstatic void 10592837Simpreaddumptimes(FILE *df) 1061558Srgrimes{ 10786473Siedowse int i; 10886473Siedowse struct dumptime *dtwalk; 1091558Srgrimes 1101558Srgrimes for (;;) { 1111558Srgrimes dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime)); 1121558Srgrimes if (getrecord(df, &(dtwalk->dt_value)) < 0) 1131558Srgrimes break; 1141558Srgrimes nddates++; 11571787Sphk SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list); 1161558Srgrimes } 1171558Srgrimes 1181558Srgrimes ddates_in = 1; 1191558Srgrimes /* 1201558Srgrimes * arrayify the list, leaving enough room for the additional 1211558Srgrimes * record that we may have to add to the ddate structure 1221558Srgrimes */ 1231558Srgrimes ddatev = (struct dumpdates **) 1241558Srgrimes calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *)); 12571787Sphk dtwalk = SLIST_FIRST(&dthead); 12671787Sphk for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list)) 1271558Srgrimes ddatev[i] = &dtwalk->dt_value; 1281558Srgrimes} 1291558Srgrimes 1301558Srgrimesvoid 13192837Simpgetdumptime(void) 1321558Srgrimes{ 13386473Siedowse struct dumpdates *ddp; 13486473Siedowse int i; 1351558Srgrimes char *fname; 1361558Srgrimes 1371558Srgrimes fname = disk; 1381558Srgrimes#ifdef FDEBUG 1391558Srgrimes msg("Looking for name %s in dumpdates = %s for level = %c\n", 1401558Srgrimes fname, dumpdates, level); 1411558Srgrimes#endif 1421558Srgrimes spcl.c_ddate = 0; 1431558Srgrimes lastlevel = '0'; 1441558Srgrimes 1451558Srgrimes initdumptimes(); 1461558Srgrimes /* 1471558Srgrimes * Go find the entry with the same name for a lower increment 1481558Srgrimes * and older date 1491558Srgrimes */ 1501558Srgrimes ITITERATE(i, ddp) { 1511558Srgrimes if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0) 1521558Srgrimes continue; 1531558Srgrimes if (ddp->dd_level >= level) 1541558Srgrimes continue; 15589572Sdillon if (ddp->dd_ddate <= _time32_to_time(spcl.c_ddate)) 1561558Srgrimes continue; 15789572Sdillon spcl.c_ddate = _time_to_time32(ddp->dd_ddate); 1581558Srgrimes lastlevel = ddp->dd_level; 1591558Srgrimes } 1601558Srgrimes} 1611558Srgrimes 1621558Srgrimesvoid 16392837Simpputdumptime(void) 1641558Srgrimes{ 1651558Srgrimes FILE *df; 16686473Siedowse struct dumpdates *dtwalk; 16786473Siedowse int i; 1681558Srgrimes int fd; 1691558Srgrimes char *fname; 17085635Sdillon char *tmsg; 1711558Srgrimes 1721558Srgrimes if(uflag == 0) 1731558Srgrimes return; 1741558Srgrimes if ((df = fopen(dumpdates, "r+")) == NULL) 1751558Srgrimes quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno)); 1761558Srgrimes fd = fileno(df); 1771558Srgrimes (void) flock(fd, LOCK_EX); 1781558Srgrimes fname = disk; 1791558Srgrimes free((char *)ddatev); 1801558Srgrimes ddatev = 0; 1811558Srgrimes nddates = 0; 1821558Srgrimes ddates_in = 0; 1831558Srgrimes readdumptimes(df); 1841558Srgrimes if (fseek(df, 0L, 0) < 0) 1851558Srgrimes quit("fseek: %s\n", strerror(errno)); 1861558Srgrimes spcl.c_ddate = 0; 1871558Srgrimes ITITERATE(i, dtwalk) { 1881558Srgrimes if (strncmp(fname, dtwalk->dd_name, 1891558Srgrimes sizeof (dtwalk->dd_name)) != 0) 1901558Srgrimes continue; 1911558Srgrimes if (dtwalk->dd_level != level) 1921558Srgrimes continue; 1931558Srgrimes goto found; 1941558Srgrimes } 1951558Srgrimes /* 1961558Srgrimes * construct the new upper bound; 1971558Srgrimes * Enough room has been allocated. 1981558Srgrimes */ 1991558Srgrimes dtwalk = ddatev[nddates] = 2001558Srgrimes (struct dumpdates *)calloc(1, sizeof (struct dumpdates)); 2011558Srgrimes nddates += 1; 2021558Srgrimes found: 2031558Srgrimes (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name)); 2041558Srgrimes dtwalk->dd_level = level; 20589572Sdillon dtwalk->dd_ddate = _time32_to_time(spcl.c_date); 2061558Srgrimes 2071558Srgrimes ITITERATE(i, dtwalk) { 2081558Srgrimes dumprecout(df, dtwalk); 2091558Srgrimes } 2101558Srgrimes if (fflush(df)) 2111558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2121558Srgrimes if (ftruncate(fd, ftell(df))) 2131558Srgrimes quit("ftruncate (%s): %s\n", dumpdates, strerror(errno)); 2141558Srgrimes (void) fclose(df); 21585635Sdillon if (spcl.c_date == 0) { 21685635Sdillon tmsg = "the epoch\n"; 21785635Sdillon } else { 21889572Sdillon time_t t = _time32_to_time(spcl.c_date); 21985635Sdillon tmsg = ctime(&t); 22085635Sdillon } 22185635Sdillon msg("level %c dump on %s", level, tmsg); 2221558Srgrimes} 2231558Srgrimes 2241558Srgrimesstatic void 22592837Simpdumprecout(FILE *file, const struct dumpdates *what) 2261558Srgrimes{ 2271558Srgrimes 22892837Simp if (fprintf(file, DUMPOUTFMT, what->dd_name, 22992837Simp what->dd_level, ctime(&what->dd_ddate)) < 0) 2301558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2311558Srgrimes} 2321558Srgrimes 2331558Srgrimesint recno; 2341558Srgrimes 2351558Srgrimesstatic int 23692837Simpgetrecord(FILE *df, struct dumpdates *ddatep) 2371558Srgrimes{ 2381558Srgrimes char tbuf[BUFSIZ]; 2391558Srgrimes 2401558Srgrimes recno = 0; 2411558Srgrimes if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf) 2421558Srgrimes return(-1); 2431558Srgrimes recno++; 2441558Srgrimes if (makedumpdate(ddatep, tbuf) < 0) 2451558Srgrimes msg("Unknown intermediate format in %s, line %d\n", 2461558Srgrimes dumpdates, recno); 2471558Srgrimes 2481558Srgrimes#ifdef FDEBUG 2491558Srgrimes msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level, 2501558Srgrimes ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate)); 2511558Srgrimes#endif 2521558Srgrimes return(0); 2531558Srgrimes} 2541558Srgrimes 2551558Srgrimesstatic int 25692837Simpmakedumpdate(struct dumpdates *ddp, const char *tbuf) 2571558Srgrimes{ 2581558Srgrimes char un_buf[128]; 2591558Srgrimes 2601558Srgrimes (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf); 2611558Srgrimes ddp->dd_ddate = unctime(un_buf); 2621558Srgrimes if (ddp->dd_ddate < 0) 2631558Srgrimes return(-1); 2641558Srgrimes return(0); 2651558Srgrimes} 266