itime.c revision 85635
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 85635 2001-10-28 20:01:38Z dillon $"; 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) { 8874873Sobrien msg("WARNING: cannot read %s: %s\n", dumpdates, 891558Srgrimes strerror(errno)); 9074872Sobrien return; 911558Srgrimes } 921558Srgrimes /* 931558Srgrimes * Dumpdates does not exist, make an empty one. 941558Srgrimes */ 951558Srgrimes msg("WARNING: no file `%s', making an empty one\n", dumpdates); 961558Srgrimes if ((df = fopen(dumpdates, "w")) == NULL) { 9774873Sobrien msg("WARNING: cannot create %s: %s\n", dumpdates, 981558Srgrimes strerror(errno)); 9974872Sobrien return; 1001558Srgrimes } 1011558Srgrimes (void) fclose(df); 1021558Srgrimes if ((df = fopen(dumpdates, "r")) == NULL) { 1031558Srgrimes quit("cannot read %s even after creating it: %s\n", 1041558Srgrimes dumpdates, strerror(errno)); 1051558Srgrimes /* NOTREACHED */ 1061558Srgrimes } 1071558Srgrimes } 1081558Srgrimes (void) flock(fileno(df), LOCK_SH); 1091558Srgrimes readdumptimes(df); 1101558Srgrimes (void) fclose(df); 1111558Srgrimes} 1121558Srgrimes 1131558Srgrimesstatic void 1141558Srgrimesreaddumptimes(df) 1151558Srgrimes FILE *df; 1161558Srgrimes{ 1171558Srgrimes register int i; 1181558Srgrimes register struct dumptime *dtwalk; 1191558Srgrimes 1201558Srgrimes for (;;) { 1211558Srgrimes dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime)); 1221558Srgrimes if (getrecord(df, &(dtwalk->dt_value)) < 0) 1231558Srgrimes break; 1241558Srgrimes nddates++; 12571787Sphk SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list); 1261558Srgrimes } 1271558Srgrimes 1281558Srgrimes ddates_in = 1; 1291558Srgrimes /* 1301558Srgrimes * arrayify the list, leaving enough room for the additional 1311558Srgrimes * record that we may have to add to the ddate structure 1321558Srgrimes */ 1331558Srgrimes ddatev = (struct dumpdates **) 1341558Srgrimes calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *)); 13571787Sphk dtwalk = SLIST_FIRST(&dthead); 13671787Sphk for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list)) 1371558Srgrimes ddatev[i] = &dtwalk->dt_value; 1381558Srgrimes} 1391558Srgrimes 1401558Srgrimesvoid 1411558Srgrimesgetdumptime() 1421558Srgrimes{ 1431558Srgrimes register struct dumpdates *ddp; 1441558Srgrimes register int i; 1451558Srgrimes char *fname; 1461558Srgrimes 1471558Srgrimes fname = disk; 1481558Srgrimes#ifdef FDEBUG 1491558Srgrimes msg("Looking for name %s in dumpdates = %s for level = %c\n", 1501558Srgrimes fname, dumpdates, level); 1511558Srgrimes#endif 1521558Srgrimes spcl.c_ddate = 0; 1531558Srgrimes lastlevel = '0'; 1541558Srgrimes 1551558Srgrimes initdumptimes(); 1561558Srgrimes /* 1571558Srgrimes * Go find the entry with the same name for a lower increment 1581558Srgrimes * and older date 1591558Srgrimes */ 1601558Srgrimes ITITERATE(i, ddp) { 1611558Srgrimes if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0) 1621558Srgrimes continue; 1631558Srgrimes if (ddp->dd_level >= level) 1641558Srgrimes continue; 16585635Sdillon if (ddp->dd_ddate <= time32_to_time(spcl.c_ddate)) 1661558Srgrimes continue; 16785635Sdillon spcl.c_ddate = time_to_time32(ddp->dd_ddate); 1681558Srgrimes lastlevel = ddp->dd_level; 1691558Srgrimes } 1701558Srgrimes} 1711558Srgrimes 1721558Srgrimesvoid 1731558Srgrimesputdumptime() 1741558Srgrimes{ 1751558Srgrimes FILE *df; 1761558Srgrimes register struct dumpdates *dtwalk; 1771558Srgrimes register int i; 1781558Srgrimes int fd; 1791558Srgrimes char *fname; 18085635Sdillon char *tmsg; 1811558Srgrimes 1821558Srgrimes if(uflag == 0) 1831558Srgrimes return; 1841558Srgrimes if ((df = fopen(dumpdates, "r+")) == NULL) 1851558Srgrimes quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno)); 1861558Srgrimes fd = fileno(df); 1871558Srgrimes (void) flock(fd, LOCK_EX); 1881558Srgrimes fname = disk; 1891558Srgrimes free((char *)ddatev); 1901558Srgrimes ddatev = 0; 1911558Srgrimes nddates = 0; 1921558Srgrimes ddates_in = 0; 1931558Srgrimes readdumptimes(df); 1941558Srgrimes if (fseek(df, 0L, 0) < 0) 1951558Srgrimes quit("fseek: %s\n", strerror(errno)); 1961558Srgrimes spcl.c_ddate = 0; 1971558Srgrimes ITITERATE(i, dtwalk) { 1981558Srgrimes if (strncmp(fname, dtwalk->dd_name, 1991558Srgrimes sizeof (dtwalk->dd_name)) != 0) 2001558Srgrimes continue; 2011558Srgrimes if (dtwalk->dd_level != level) 2021558Srgrimes continue; 2031558Srgrimes goto found; 2041558Srgrimes } 2051558Srgrimes /* 2061558Srgrimes * construct the new upper bound; 2071558Srgrimes * Enough room has been allocated. 2081558Srgrimes */ 2091558Srgrimes dtwalk = ddatev[nddates] = 2101558Srgrimes (struct dumpdates *)calloc(1, sizeof (struct dumpdates)); 2111558Srgrimes nddates += 1; 2121558Srgrimes found: 2131558Srgrimes (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name)); 2141558Srgrimes dtwalk->dd_level = level; 21585635Sdillon dtwalk->dd_ddate = time32_to_time(spcl.c_date); 2161558Srgrimes 2171558Srgrimes ITITERATE(i, dtwalk) { 2181558Srgrimes dumprecout(df, dtwalk); 2191558Srgrimes } 2201558Srgrimes if (fflush(df)) 2211558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2221558Srgrimes if (ftruncate(fd, ftell(df))) 2231558Srgrimes quit("ftruncate (%s): %s\n", dumpdates, strerror(errno)); 2241558Srgrimes (void) fclose(df); 22585635Sdillon if (spcl.c_date == 0) { 22685635Sdillon tmsg = "the epoch\n"; 22785635Sdillon } else { 22885635Sdillon time_t t = time32_to_time(spcl.c_date); 22985635Sdillon tmsg = ctime(&t); 23085635Sdillon } 23185635Sdillon msg("level %c dump on %s", level, tmsg); 2321558Srgrimes} 2331558Srgrimes 2341558Srgrimesstatic void 2351558Srgrimesdumprecout(file, what) 2361558Srgrimes FILE *file; 2371558Srgrimes struct dumpdates *what; 2381558Srgrimes{ 2391558Srgrimes 2401558Srgrimes if (fprintf(file, DUMPOUTFMT, 2411558Srgrimes what->dd_name, 2421558Srgrimes what->dd_level, 2431558Srgrimes ctime(&what->dd_ddate)) < 0) 2441558Srgrimes quit("%s: %s\n", dumpdates, strerror(errno)); 2451558Srgrimes} 2461558Srgrimes 2471558Srgrimesint recno; 2481558Srgrimes 2491558Srgrimesstatic int 2501558Srgrimesgetrecord(df, ddatep) 2511558Srgrimes FILE *df; 2521558Srgrimes struct dumpdates *ddatep; 2531558Srgrimes{ 2541558Srgrimes char tbuf[BUFSIZ]; 2551558Srgrimes 2561558Srgrimes recno = 0; 2571558Srgrimes if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf) 2581558Srgrimes return(-1); 2591558Srgrimes recno++; 2601558Srgrimes if (makedumpdate(ddatep, tbuf) < 0) 2611558Srgrimes msg("Unknown intermediate format in %s, line %d\n", 2621558Srgrimes dumpdates, recno); 2631558Srgrimes 2641558Srgrimes#ifdef FDEBUG 2651558Srgrimes msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level, 2661558Srgrimes ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate)); 2671558Srgrimes#endif 2681558Srgrimes return(0); 2691558Srgrimes} 2701558Srgrimes 2711558Srgrimesstatic int 2721558Srgrimesmakedumpdate(ddp, tbuf) 2731558Srgrimes struct dumpdates *ddp; 2741558Srgrimes char *tbuf; 2751558Srgrimes{ 2761558Srgrimes char un_buf[128]; 2771558Srgrimes 2781558Srgrimes (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf); 2791558Srgrimes ddp->dd_ddate = unctime(un_buf); 2801558Srgrimes if (ddp->dd_ddate < 0) 2811558Srgrimes return(-1); 2821558Srgrimes return(0); 2831558Srgrimes} 284