itime.c revision 74873
185965Sbrian/*- 277690Sbrian * Copyright (c) 1980, 1993 320365Sjkh * The Regents of the University of California. All rights reserved. 477690Sbrian * 577690Sbrian * Redistribution and use in source and binary forms, with or without 677690Sbrian * modification, are permitted provided that the following conditions 777690Sbrian * are met: 877690Sbrian * 1. Redistributions of source code must retain the above copyright 977690Sbrian * notice, this list of conditions and the following disclaimer. 1077690Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1177690Sbrian * notice, this list of conditions and the following disclaimer in the 1226031Sbrian * documentation and/or other materials provided with the distribution. 1377690Sbrian * 3. All advertising materials mentioning features or use of this software 1477690Sbrian * must display the following acknowledgement: 1577690Sbrian * This product includes software developed by the University of 1677690Sbrian * California, Berkeley and its contributors. 1777690Sbrian * 4. Neither the name of the University nor the names of its contributors 1877690Sbrian * may be used to endorse or promote products derived from this software 1977690Sbrian * without specific prior written permission. 2077690Sbrian * 2177690Sbrian * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2277690Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2377690Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2426031Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2577690Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2677690Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2777690Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2877690Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2977690Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3077690Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3120365Sjkh * SUCH DAMAGE. 3220365Sjkh */ 3320365Sjkh 3426031Sbrian#ifndef lint 3526031Sbrian#if 0 3636466Sbrianstatic char sccsid[] = "@(#)itime.c 8.1 (Berkeley) 6/5/93"; 3726031Sbrian#endif 3820365Sjkhstatic const char rcsid[] = 3920365Sjkh "$FreeBSD: head/sbin/dump/itime.c 74873 2001-03-27 19:38:34Z obrien $"; 4026031Sbrian#endif /* not lint */ 4120365Sjkh 4220365Sjkh#include <sys/param.h> 4377690Sbrian#include <sys/queue.h> 4477690Sbrian#include <sys/time.h> 4577690Sbrian#ifdef sunos 4677690Sbrian#include <sys/vnode.h> 4726031Sbrian 4877690Sbrian#include <ufs/fsdir.h> 4920365Sjkh#include <ufs/inode.h> 5077690Sbrian#include <ufs/fs.h> 5177690Sbrian#else 5226031Sbrian#include <ufs/ufs/dinode.h> 5326031Sbrian#endif 5426031Sbrian 5520365Sjkh#include <protocols/dumprestore.h> 5620365Sjkh 5726031Sbrian#include <errno.h> 5826031Sbrian#include <fcntl.h> 5926031Sbrian#include <stdio.h> 6026031Sbrian#ifdef __STDC__ 6126031Sbrian#include <stdlib.h> 6226031Sbrian#include <string.h> 6320365Sjkh#endif 6477690Sbrian 6526031Sbrian#include "dump.h" 6626031Sbrian 6726031Sbrianstruct dumptime { 6826031Sbrian struct dumpdates dt_value; 6926031Sbrian SLIST_ENTRY(dumptime) dt_list; 7020365Sjkh}; 7126031SbrianSLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead); 7226031Sbrianstruct dumpdates **ddatev = 0; 7326031Sbrianint nddates = 0; 7426031Sbrianint ddates_in = 0; 7526031Sbrian 7626031Sbrianstatic void dumprecout __P((FILE *, struct dumpdates *)); 7726031Sbrianstatic int getrecord __P((FILE *, struct dumpdates *)); 7820365Sjkhstatic int makedumpdate __P((struct dumpdates *, char *)); 7926031Sbrianstatic void readdumptimes __P((FILE *)); 8026031Sbrian 8136466Sbrianvoid 8226031Sbrianinitdumptimes() 8320365Sjkh{ 8477690Sbrian FILE *df; 8526031Sbrian 8620365Sjkh if ((df = fopen(dumpdates, "r")) == NULL) { 8720365Sjkh if (errno != ENOENT) { 8820365Sjkh msg("WARNING: cannot read %s: %s\n", dumpdates, 8920365Sjkh strerror(errno)); 9020365Sjkh return; 9126031Sbrian /* NOTREACHED */ 9277690Sbrian } 9326031Sbrian /* 9477690Sbrian * Dumpdates does not exist, make an empty one. 9577690Sbrian */ 9626031Sbrian msg("WARNING: no file `%s', making an empty one\n", dumpdates); 9726031Sbrian if ((df = fopen(dumpdates, "w")) == NULL) { 9820365Sjkh msg("WARNING: cannot create %s: %s\n", dumpdates, 9977690Sbrian strerror(errno)); 10026031Sbrian return; 10126031Sbrian /* NOTREACHED */ 10226031Sbrian } 10320365Sjkh (void) fclose(df); 10426031Sbrian if ((df = fopen(dumpdates, "r")) == NULL) { 10526031Sbrian quit("cannot read %s even after creating it: %s\n", 10626031Sbrian dumpdates, strerror(errno)); 10726031Sbrian /* NOTREACHED */ 10826031Sbrian } 10926031Sbrian } 11020365Sjkh (void) flock(fileno(df), LOCK_SH); 11120365Sjkh readdumptimes(df); 11220365Sjkh (void) fclose(df); 11326031Sbrian} 11420365Sjkh 11577690Sbrianstatic void 11677690Sbrianreaddumptimes(df) 11777690Sbrian FILE *df; 11836466Sbrian{ 11977690Sbrian register int i; 12036466Sbrian register struct dumptime *dtwalk; 12120365Sjkh 12226031Sbrian for (;;) { 12377690Sbrian dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime)); 12420365Sjkh if (getrecord(df, &(dtwalk->dt_value)) < 0) 12577690Sbrian break; 12620365Sjkh nddates++; 12777690Sbrian SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list); 12820365Sjkh } 12926031Sbrian 13020365Sjkh ddates_in = 1; 13126031Sbrian /* 13277690Sbrian * arrayify the list, leaving enough room for the additional 13326031Sbrian * record that we may have to add to the ddate structure 13477690Sbrian */ 13577690Sbrian ddatev = (struct dumpdates **) 13626031Sbrian calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *)); 13726031Sbrian dtwalk = SLIST_FIRST(&dthead); 13877690Sbrian for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list)) 13926031Sbrian ddatev[i] = &dtwalk->dt_value; 14026031Sbrian} 14126031Sbrian 14277690Sbrianvoid 14326031Sbriangetdumptime() 14426031Sbrian{ 14577690Sbrian register struct dumpdates *ddp; 14626031Sbrian register int i; 14777690Sbrian char *fname; 14836466Sbrian 14926031Sbrian fname = disk; 15026031Sbrian#ifdef FDEBUG 15126031Sbrian msg("Looking for name %s in dumpdates = %s for level = %c\n", 15277690Sbrian fname, dumpdates, level); 15326031Sbrian#endif 15477690Sbrian spcl.c_ddate = 0; 15526031Sbrian lastlevel = '0'; 15677690Sbrian 15777690Sbrian initdumptimes(); 15826031Sbrian /* 15926031Sbrian * Go find the entry with the same name for a lower increment 16077690Sbrian * and older date 16126031Sbrian */ 16277690Sbrian ITITERATE(i, ddp) { 16326031Sbrian if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0) 16477690Sbrian continue; 16526031Sbrian if (ddp->dd_level >= level) 16636466Sbrian continue; 16726031Sbrian if (ddp->dd_ddate <= spcl.c_ddate) 16826031Sbrian continue; 16977690Sbrian spcl.c_ddate = ddp->dd_ddate; 17026031Sbrian lastlevel = ddp->dd_level; 17126031Sbrian } 17226031Sbrian} 17377690Sbrian 17426031Sbrianvoid 17577690Sbrianputdumptime() 17677690Sbrian{ 17777690Sbrian FILE *df; 17836466Sbrian register struct dumpdates *dtwalk; 17926031Sbrian register int i; 18026031Sbrian int fd; 18126031Sbrian char *fname; 18236466Sbrian 18326031Sbrian if(uflag == 0) 18426031Sbrian return; 18526031Sbrian if ((df = fopen(dumpdates, "r+")) == NULL) 18626031Sbrian quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno)); 18726031Sbrian fd = fileno(df); 18877690Sbrian (void) flock(fd, LOCK_EX); 18926031Sbrian fname = disk; 19077690Sbrian free((char *)ddatev); 19126031Sbrian ddatev = 0; 19226031Sbrian nddates = 0; 19326031Sbrian ddates_in = 0; 19426031Sbrian readdumptimes(df); 19526031Sbrian if (fseek(df, 0L, 0) < 0) 19626031Sbrian quit("fseek: %s\n", strerror(errno)); 19726031Sbrian spcl.c_ddate = 0; 19826031Sbrian ITITERATE(i, dtwalk) { 19926031Sbrian if (strncmp(fname, dtwalk->dd_name, 20026031Sbrian sizeof (dtwalk->dd_name)) != 0) 20177690Sbrian continue; 20226031Sbrian if (dtwalk->dd_level != level) 20326031Sbrian continue; 20477690Sbrian goto found; 20526031Sbrian } 20677690Sbrian /* 20726031Sbrian * construct the new upper bound; 20826031Sbrian * Enough room has been allocated. 20926031Sbrian */ 21077690Sbrian dtwalk = ddatev[nddates] = 21126031Sbrian (struct dumpdates *)calloc(1, sizeof (struct dumpdates)); 21236466Sbrian nddates += 1; 21326031Sbrian found: 21426031Sbrian (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name)); 21526031Sbrian dtwalk->dd_level = level; 21626031Sbrian dtwalk->dd_ddate = spcl.c_date; 21726031Sbrian 21826031Sbrian ITITERATE(i, dtwalk) { 21977690Sbrian dumprecout(df, dtwalk); 22026031Sbrian } 22126031Sbrian if (fflush(df)) 22226031Sbrian quit("%s: %s\n", dumpdates, strerror(errno)); 22326031Sbrian if (ftruncate(fd, ftell(df))) 22426031Sbrian quit("ftruncate (%s): %s\n", dumpdates, strerror(errno)); 22526031Sbrian (void) fclose(df); 22626031Sbrian msg("level %c dump on %s", level, 22726031Sbrian spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 22826031Sbrian} 22977690Sbrian 23026031Sbrianstatic void 23126031Sbriandumprecout(file, what) 23226031Sbrian FILE *file; 23326031Sbrian struct dumpdates *what; 23477690Sbrian{ 23526031Sbrian 23626031Sbrian if (fprintf(file, DUMPOUTFMT, 23777690Sbrian what->dd_name, 23877690Sbrian what->dd_level, 23977690Sbrian ctime(&what->dd_ddate)) < 0) 24026031Sbrian quit("%s: %s\n", dumpdates, strerror(errno)); 24136466Sbrian} 24226031Sbrian 24377690Sbrianint recno; 24426031Sbrian 24526031Sbrianstatic int 24626031Sbriangetrecord(df, ddatep) 24726031Sbrian FILE *df; 24826031Sbrian struct dumpdates *ddatep; 24926031Sbrian{ 25077690Sbrian char tbuf[BUFSIZ]; 25177690Sbrian 25277690Sbrian recno = 0; 25377690Sbrian if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf) 25477690Sbrian return(-1); 25526031Sbrian recno++; 25626031Sbrian if (makedumpdate(ddatep, tbuf) < 0) 25726031Sbrian msg("Unknown intermediate format in %s, line %d\n", 25877690Sbrian dumpdates, recno); 25926031Sbrian 26026031Sbrian#ifdef FDEBUG 26126031Sbrian msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level, 26226031Sbrian ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate)); 26326031Sbrian#endif 26426031Sbrian return(0); 26577690Sbrian} 26626031Sbrian 26726031Sbrianstatic int 26836466Sbrianmakedumpdate(ddp, tbuf) 26977690Sbrian struct dumpdates *ddp; 27026031Sbrian char *tbuf; 27126031Sbrian{ 27226031Sbrian char un_buf[128]; 27336466Sbrian 27426031Sbrian (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf); 27586806Sbrian ddp->dd_ddate = unctime(un_buf); 27626031Sbrian if (ddp->dd_ddate < 0) 27726031Sbrian return(-1); 27826031Sbrian return(0); 27926031Sbrian} 28026031Sbrian