itime.c revision 89572
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 89572 2002-01-19 23:20:02Z dillon $"; 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#ifdef __STDC__ 541558Srgrimes#include <stdlib.h> 551558Srgrimes#include <string.h> 561558Srgrimes#endif 571558Srgrimes 581558Srgrimes#include "dump.h" 591558Srgrimes 6071787Sphkstruct dumptime { 6171787Sphk struct dumpdates dt_value; 6271787Sphk SLIST_ENTRY(dumptime) dt_list; 6371787Sphk}; 6471787SphkSLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead); 651558Srgrimesstruct dumpdates **ddatev = 0; 661558Srgrimesint nddates = 0; 671558Srgrimesint ddates_in = 0; 681558Srgrimes 691558Srgrimesstatic void dumprecout __P((FILE *, struct dumpdates *)); 701558Srgrimesstatic int getrecord __P((FILE *, struct dumpdates *)); 711558Srgrimesstatic int makedumpdate __P((struct dumpdates *, char *)); 721558Srgrimesstatic void readdumptimes __P((FILE *)); 731558Srgrimes 741558Srgrimesvoid 751558Srgrimesinitdumptimes() 761558Srgrimes{ 771558Srgrimes FILE *df; 781558Srgrimes 791558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 801558Srgrimes if (errno != ENOENT) { 8174873Sobrien msg("WARNING: cannot read %s: %s\n", dumpdates, 821558Srgrimes strerror(errno)); 8374872Sobrien return; 841558Srgrimes } 851558Srgrimes /* 861558Srgrimes * Dumpdates does not exist, make an empty one. 871558Srgrimes */ 881558Srgrimes msg("WARNING: no file `%s', making an empty one\n", dumpdates); 891558Srgrimes if ((df = fopen(dumpdates, "w")) == NULL) { 9074873Sobrien msg("WARNING: cannot create %s: %s\n", dumpdates, 911558Srgrimes strerror(errno)); 9274872Sobrien return; 931558Srgrimes } 941558Srgrimes (void) fclose(df); 951558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 961558Srgrimes quit("cannot read %s even after creating it: %s\n", 971558Srgrimes dumpdates, strerror(errno)); 981558Srgrimes /* NOTREACHED */ 991558Srgrimes } 1001558Srgrimes } 1011558Srgrimes (void) flock(fileno(df), LOCK_SH); 1021558Srgrimes readdumptimes(df); 1031558Srgrimes (void) fclose(df); 1041558Srgrimes} 1051558Srgrimes 1061558Srgrimesstatic void 1071558Srgrimesreaddumptimes(df) 1081558Srgrimes FILE *df; 1091558Srgrimes{ 11086473Siedowse int i; 11186473Siedowse struct dumptime *dtwalk; 1121558Srgrimes 1131558Srgrimes for (;;) { 1141558Srgrimes dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime)); 1151558Srgrimes if (getrecord(df, &(dtwalk->dt_value)) < 0) 1161558Srgrimes break; 1171558Srgrimes nddates++; 11871787Sphk SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list); 1191558Srgrimes } 1201558Srgrimes 1211558Srgrimes ddates_in = 1; 1221558Srgrimes /* 1231558Srgrimes * arrayify the list, leaving enough room for the additional 1241558Srgrimes * record that we may have to add to the ddate structure 1251558Srgrimes */ 1261558Srgrimes ddatev = (struct dumpdates **) 1271558Srgrimes calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *)); 12871787Sphk dtwalk = SLIST_FIRST(&dthead); 12971787Sphk for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list)) 1301558Srgrimes ddatev[i] = &dtwalk->dt_value; 1311558Srgrimes} 1321558Srgrimes 1331558Srgrimesvoid 1341558Srgrimesgetdumptime() 1351558Srgrimes{ 13686473Siedowse struct dumpdates *ddp; 13786473Siedowse int i; 1381558Srgrimes char *fname; 1391558Srgrimes 1401558Srgrimes fname = disk; 1411558Srgrimes#ifdef FDEBUG 1421558Srgrimes msg("Looking for name %s in dumpdates = %s for level = %c\n", 1431558Srgrimes fname, dumpdates, level); 1441558Srgrimes#endif 1451558Srgrimes spcl.c_ddate = 0; 1461558Srgrimes lastlevel = '0'; 1471558Srgrimes 1481558Srgrimes initdumptimes(); 1491558Srgrimes /* 1501558Srgrimes * Go find the entry with the same name for a lower increment 1511558Srgrimes * and older date 1521558Srgrimes */ 1531558Srgrimes ITITERATE(i, ddp) { 1541558Srgrimes if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0) 1551558Srgrimes continue; 1561558Srgrimes if (ddp->dd_level >= level) 1571558Srgrimes continue; 15889572Sdillon if (ddp->dd_ddate <= _time32_to_time(spcl.c_ddate)) 1591558Srgrimes continue; 16089572Sdillon spcl.c_ddate = _time_to_time32(ddp->dd_ddate); 1611558Srgrimes lastlevel = ddp->dd_level; 1621558Srgrimes } 1631558Srgrimes} 1641558Srgrimes 1651558Srgrimesvoid 1661558Srgrimesputdumptime() 1671558Srgrimes{ 1681558Srgrimes FILE *df; 16986473Siedowse struct dumpdates *dtwalk; 17086473Siedowse int i; 1711558Srgrimes int fd; 1721558Srgrimes char *fname; 17385635Sdillon char *tmsg; 1741558Srgrimes 1751558Srgrimes if(uflag == 0) 1761558Srgrimes return; 1771558Srgrimes if ((df = fopen(dumpdates, "r+")) == NULL) 1781558Srgrimes quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno)); 1791558Srgrimes fd = fileno(df); 1801558Srgrimes (void) flock(fd, LOCK_EX); 1811558Srgrimes fname = disk; 1821558Srgrimes free((char *)ddatev); 1831558Srgrimes ddatev = 0; 1841558Srgrimes nddates = 0; 1851558Srgrimes ddates_in = 0; 1861558Srgrimes readdumptimes(df); 1871558Srgrimes if (fseek(df, 0L, 0) < 0) 1881558Srgrimes quit("fseek: %s\n", strerror(errno)); 1891558Srgrimes spcl.c_ddate = 0; 1901558Srgrimes ITITERATE(i, dtwalk) { 1911558Srgrimes if (strncmp(fname, dtwalk->dd_name, 1921558Srgrimes sizeof (dtwalk->dd_name)) != 0) 1931558Srgrimes continue; 1941558Srgrimes if (dtwalk->dd_level != level) 1951558Srgrimes continue; 1961558Srgrimes goto found; 1971558Srgrimes } 1981558Srgrimes /* 1991558Srgrimes * construct the new upper bound; 2001558Srgrimes * Enough room has been allocated. 2011558Srgrimes */ 2021558Srgrimes dtwalk = ddatev[nddates] = 2031558Srgrimes (struct dumpdates *)calloc(1, sizeof (struct dumpdates)); 2041558Srgrimes nddates += 1; 2051558Srgrimes found: 2061558Srgrimes (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name)); 2071558Srgrimes dtwalk->dd_level = level; 20889572Sdillon dtwalk->dd_ddate = _time32_to_time(spcl.c_date); 2091558Srgrimes 2101558Srgrimes ITITERATE(i, dtwalk) { 2111558Srgrimes dumprecout(df, dtwalk); 2121558Srgrimes } 2131558Srgrimes if (fflush(df)) 2141558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2151558Srgrimes if (ftruncate(fd, ftell(df))) 2161558Srgrimes quit("ftruncate (%s): %s\n", dumpdates, strerror(errno)); 2171558Srgrimes (void) fclose(df); 21885635Sdillon if (spcl.c_date == 0) { 21985635Sdillon tmsg = "the epoch\n"; 22085635Sdillon } else { 22189572Sdillon time_t t = _time32_to_time(spcl.c_date); 22285635Sdillon tmsg = ctime(&t); 22385635Sdillon } 22485635Sdillon msg("level %c dump on %s", level, tmsg); 2251558Srgrimes} 2261558Srgrimes 2271558Srgrimesstatic void 2281558Srgrimesdumprecout(file, what) 2291558Srgrimes FILE *file; 2301558Srgrimes struct dumpdates *what; 2311558Srgrimes{ 2321558Srgrimes 2331558Srgrimes if (fprintf(file, DUMPOUTFMT, 2341558Srgrimes what->dd_name, 2351558Srgrimes what->dd_level, 2361558Srgrimes ctime(&what->dd_ddate)) < 0) 2371558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2381558Srgrimes} 2391558Srgrimes 2401558Srgrimesint recno; 2411558Srgrimes 2421558Srgrimesstatic int 2431558Srgrimesgetrecord(df, ddatep) 2441558Srgrimes FILE *df; 2451558Srgrimes struct dumpdates *ddatep; 2461558Srgrimes{ 2471558Srgrimes char tbuf[BUFSIZ]; 2481558Srgrimes 2491558Srgrimes recno = 0; 2501558Srgrimes if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf) 2511558Srgrimes return(-1); 2521558Srgrimes recno++; 2531558Srgrimes if (makedumpdate(ddatep, tbuf) < 0) 2541558Srgrimes msg("Unknown intermediate format in %s, line %d\n", 2551558Srgrimes dumpdates, recno); 2561558Srgrimes 2571558Srgrimes#ifdef FDEBUG 2581558Srgrimes msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level, 2591558Srgrimes ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate)); 2601558Srgrimes#endif 2611558Srgrimes return(0); 2621558Srgrimes} 2631558Srgrimes 2641558Srgrimesstatic int 2651558Srgrimesmakedumpdate(ddp, tbuf) 2661558Srgrimes struct dumpdates *ddp; 2671558Srgrimes char *tbuf; 2681558Srgrimes{ 2691558Srgrimes char un_buf[128]; 2701558Srgrimes 2711558Srgrimes (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf); 2721558Srgrimes ddp->dd_ddate = unctime(un_buf); 2731558Srgrimes if (ddp->dd_ddate < 0) 2741558Srgrimes return(-1); 2751558Srgrimes return(0); 2761558Srgrimes} 277