mkfs.c revision 105423
11558Srgrimes/* 298542Smckusick * Copyright (c) 2002 Networks Associates Technology, Inc. 398542Smckusick * All rights reserved. 498542Smckusick * 598542Smckusick * This software was developed for the FreeBSD Project by Marshall 698542Smckusick * Kirk McKusick and Network Associates Laboratories, the Security 798542Smckusick * Research Division of Network Associates, Inc. under DARPA/SPAWAR 898542Smckusick * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 998542Smckusick * research program 1098542Smckusick * 1198542Smckusick * Copyright (c) 1982, 1989, 1993 1298542Smckusick * The Regents of the University of California. All rights reserved. 1398542Smckusick * (c) UNIX System Laboratories, Inc. 141558Srgrimes * Copyright (c) 1980, 1989, 1993 151558Srgrimes * The Regents of the University of California. All rights reserved. 161558Srgrimes * 171558Srgrimes * Redistribution and use in source and binary forms, with or without 181558Srgrimes * modification, are permitted provided that the following conditions 191558Srgrimes * are met: 201558Srgrimes * 1. Redistributions of source code must retain the above copyright 211558Srgrimes * notice, this list of conditions and the following disclaimer. 221558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 231558Srgrimes * notice, this list of conditions and the following disclaimer in the 241558Srgrimes * documentation and/or other materials provided with the distribution. 251558Srgrimes * 3. All advertising materials mentioning features or use of this software 261558Srgrimes * must display the following acknowledgement: 271558Srgrimes * This product includes software developed by the University of 281558Srgrimes * California, Berkeley and its contributors. 291558Srgrimes * 4. Neither the name of the University nor the names of its contributors 301558Srgrimes * may be used to endorse or promote products derived from this software 311558Srgrimes * without specific prior written permission. 321558Srgrimes * 331558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 341558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 351558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 361558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 371558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 381558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 391558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 401558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 411558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 421558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 431558Srgrimes * SUCH DAMAGE. 441558Srgrimes */ 451558Srgrimes 461558Srgrimes#ifndef lint 4737664Scharnier#if 0 4823682Speterstatic char sccsid[] = "@(#)mkfs.c 8.11 (Berkeley) 5/3/95"; 4937664Scharnier#endif 5037664Scharnierstatic const char rcsid[] = 5150476Speter "$FreeBSD: head/sbin/newfs/mkfs.c 105423 2002-10-18 23:17:30Z mckusick $"; 521558Srgrimes#endif /* not lint */ 531558Srgrimes 5437664Scharnier#include <err.h> 55103949Smike#include <limits.h> 5637664Scharnier#include <signal.h> 5792709Siedowse#include <stdlib.h> 5837664Scharnier#include <string.h> 5999796Sbde#include <stdint.h> 6037664Scharnier#include <stdio.h> 611558Srgrimes#include <unistd.h> 621558Srgrimes#include <sys/param.h> 631558Srgrimes#include <sys/time.h> 6437664Scharnier#include <sys/types.h> 651558Srgrimes#include <sys/wait.h> 661558Srgrimes#include <sys/resource.h> 6743804Sdillon#include <sys/stat.h> 681558Srgrimes#include <ufs/ufs/dinode.h> 691558Srgrimes#include <ufs/ufs/dir.h> 701558Srgrimes#include <ufs/ffs/fs.h> 711558Srgrimes#include <sys/disklabel.h> 723550Sphk#include <sys/file.h> 733550Sphk#include <sys/mman.h> 7413637Sjoerg#include <sys/ioctl.h> 7592717Sphk#include "newfs.h" 761558Srgrimes 771558Srgrimes/* 78102231Strhodes * make file system for cylinder-group style file systems 791558Srgrimes */ 801558Srgrimes#define UMASK 0755 811558Srgrimes#define POWEROF2(num) (((num) & ((num) - 1)) == 0) 821558Srgrimes 8392717Sphkstatic union { 841558Srgrimes struct fs fs; 8598542Smckusick char pad[SBLOCKSIZE]; 861558Srgrimes} fsun; 871558Srgrimes#define sblock fsun.fs 8892717Sphkstatic struct csum *fscs; 891558Srgrimes 9092717Sphkstatic union { 911558Srgrimes struct cg cg; 921558Srgrimes char pad[MAXBSIZE]; 931558Srgrimes} cgun; 941558Srgrimes#define acg cgun.cg 951558Srgrimes 9698542Smckusickunion dinode { 9798542Smckusick struct ufs1_dinode dp1; 9898542Smckusick struct ufs2_dinode dp2; 9998542Smckusick}; 10098542Smckusick#define DIP(dp, field) \ 10198542Smckusick ((sblock.fs_magic == FS_UFS1_MAGIC) ? \ 10298542Smckusick (dp)->dp1.field : (dp)->dp2.field) 1031558Srgrimes 10492717Sphkstatic int randinit; 10598542Smckusickstatic caddr_t iobuf; 10698542Smckusickstatic long iobufsize; 10798542Smckusickstatic ufs2_daddr_t alloc(int size, int mode); 10892717Sphkstatic int charsperline(void); 10993775Sbdestatic void clrblock(struct fs *, unsigned char *, int); 11093775Sbdestatic void fsinit(time_t); 11192712Siedowsestatic int ilog2(int); 11293775Sbdestatic void initcg(int, time_t); 11393775Sbdestatic int isblock(struct fs *, unsigned char *, int); 11498542Smckusickstatic void iput(union dinode *, ino_t); 11593775Sbdestatic int makedir(struct direct *, int); 11698542Smckusickstatic void rdfs(ufs2_daddr_t, int, char *); 11793775Sbdestatic void setblock(struct fs *, unsigned char *, int); 11898542Smckusickstatic void wtfs(ufs2_daddr_t, int, char *); 11993775Sbdestatic void wtfsflush(void); 1201558Srgrimes 12137664Scharniervoid 12295357Sphkmkfs(struct partition *pp, char *fsys) 1231558Srgrimes{ 12498542Smckusick int fragsperinode, optimalfpg, origdensity, minfpg, lastminfpg; 12598542Smckusick long i, j, cylno, csfrags; 1261558Srgrimes time_t utime; 1271558Srgrimes quad_t sizepb; 12813769Sjoerg int width; 12913769Sjoerg char tmpbuf[100]; /* XXX this will break in about 2,500 years */ 1301558Srgrimes 13192722Sphk if (Rflag) 13292722Sphk utime = 1000000000; 13392722Sphk else 13492722Sphk time(&utime); 13592722Sphk if (!Rflag && !randinit) { 13624215Sache randinit = 1; 13726625Sache srandomdev(); 13824215Sache } 13998542Smckusick /* 14098542Smckusick * allocate space for superblock, cylinder group map, and 14198542Smckusick * two sets of inode blocks. 14298542Smckusick */ 14398542Smckusick if (bsize < SBLOCKSIZE) 14498542Smckusick iobufsize = SBLOCKSIZE + 3 * bsize; 14598542Smckusick else 14698542Smckusick iobufsize = 4 * bsize; 14798542Smckusick if ((iobuf = malloc(iobufsize)) == 0) { 14898542Smckusick printf("Cannot allocate I/O buffer\n"); 14998542Smckusick exit(38); 15098542Smckusick } 15198542Smckusick bzero(iobuf, iobufsize); 15298542Smckusick sblock.fs_flags = 0; 15375124Sbde if (Uflag) 15475078Sobrien sblock.fs_flags |= FS_DOSOFTDEP; 1551558Srgrimes /* 156102231Strhodes * Validate the given file system size. 1571558Srgrimes * Verify that its last block can actually be accessed. 158102231Strhodes * Convert to file system fragment sized units. 1591558Srgrimes */ 16098542Smckusick if (fssize <= 0) { 16199796Sbde printf("preposterous size %jd\n", (intmax_t)fssize); 16298542Smckusick exit(13); 16398542Smckusick } 16420061Ssos wtfs(fssize - (realsectorsize / DEV_BSIZE), realsectorsize, 16592532Sbde (char *)&sblock); 1661558Srgrimes /* 167102231Strhodes * collect and verify the file system density info 16875377Smckusick */ 16975377Smckusick sblock.fs_avgfilesize = avgfilesize; 17075377Smckusick sblock.fs_avgfpdir = avgfilesperdir; 17175377Smckusick if (sblock.fs_avgfilesize <= 0) 17275377Smckusick printf("illegal expected average file size %d\n", 17375377Smckusick sblock.fs_avgfilesize), exit(14); 17475377Smckusick if (sblock.fs_avgfpdir <= 0) 17575377Smckusick printf("illegal expected number of files per directory %d\n", 17675377Smckusick sblock.fs_avgfpdir), exit(15); 17775377Smckusick /* 1781558Srgrimes * collect and verify the block and fragment sizes 1791558Srgrimes */ 1801558Srgrimes sblock.fs_bsize = bsize; 1811558Srgrimes sblock.fs_fsize = fsize; 1821558Srgrimes if (!POWEROF2(sblock.fs_bsize)) { 1831558Srgrimes printf("block size must be a power of 2, not %d\n", 1841558Srgrimes sblock.fs_bsize); 1851558Srgrimes exit(16); 1861558Srgrimes } 1871558Srgrimes if (!POWEROF2(sblock.fs_fsize)) { 1881558Srgrimes printf("fragment size must be a power of 2, not %d\n", 1891558Srgrimes sblock.fs_fsize); 1901558Srgrimes exit(17); 1911558Srgrimes } 1921558Srgrimes if (sblock.fs_fsize < sectorsize) { 19393775Sbde printf("increasing fragment size from %d to sector size (%d)\n", 1941558Srgrimes sblock.fs_fsize, sectorsize); 19593737Sphk sblock.fs_fsize = sectorsize; 1961558Srgrimes } 1971558Srgrimes if (sblock.fs_bsize < MINBSIZE) { 19893737Sphk printf("increasing block size from %d to minimum (%d)\n", 1991558Srgrimes sblock.fs_bsize, MINBSIZE); 20093737Sphk sblock.fs_bsize = MINBSIZE; 2011558Srgrimes } 2021558Srgrimes if (sblock.fs_bsize < sblock.fs_fsize) { 20393775Sbde printf("increasing block size from %d to fragment size (%d)\n", 20492532Sbde sblock.fs_bsize, sblock.fs_fsize); 20593737Sphk sblock.fs_bsize = sblock.fs_fsize; 2061558Srgrimes } 20793737Sphk if (sblock.fs_fsize * MAXFRAG < sblock.fs_bsize) { 20893775Sbde printf( 20993775Sbde "increasing fragment size from %d to block size / %d (%d)\n", 21093737Sphk sblock.fs_fsize, MAXFRAG, sblock.fs_bsize / MAXFRAG); 21193737Sphk sblock.fs_fsize = sblock.fs_bsize / MAXFRAG; 21293737Sphk } 21398542Smckusick if (maxbsize < bsize || !POWEROF2(maxbsize)) { 21498542Smckusick sblock.fs_maxbsize = sblock.fs_bsize; 21598542Smckusick printf("Extent size set to %d\n", sblock.fs_maxbsize); 21698542Smckusick } else if (sblock.fs_maxbsize > FS_MAXCONTIG * sblock.fs_bsize) { 21798542Smckusick sblock.fs_maxbsize = FS_MAXCONTIG * sblock.fs_bsize; 21898542Smckusick printf("Extent size reduced to %d\n", sblock.fs_maxbsize); 21998542Smckusick } else { 22098542Smckusick sblock.fs_maxbsize = maxbsize; 22198542Smckusick } 22298542Smckusick sblock.fs_maxcontig = maxcontig; 22398542Smckusick if (sblock.fs_maxcontig < sblock.fs_maxbsize / sblock.fs_bsize) { 22498542Smckusick sblock.fs_maxcontig = sblock.fs_maxbsize / sblock.fs_bsize; 22598542Smckusick printf("Maxcontig raised to %d\n", sblock.fs_maxbsize); 22698542Smckusick } 22798542Smckusick if (sblock.fs_maxcontig > 1) 22898542Smckusick sblock.fs_contigsumsize = MIN(sblock.fs_maxcontig,FS_MAXCONTIG); 2291558Srgrimes sblock.fs_bmask = ~(sblock.fs_bsize - 1); 2301558Srgrimes sblock.fs_fmask = ~(sblock.fs_fsize - 1); 2311558Srgrimes sblock.fs_qbmask = ~sblock.fs_bmask; 2321558Srgrimes sblock.fs_qfmask = ~sblock.fs_fmask; 23392712Siedowse sblock.fs_bshift = ilog2(sblock.fs_bsize); 23492712Siedowse sblock.fs_fshift = ilog2(sblock.fs_fsize); 2351558Srgrimes sblock.fs_frag = numfrags(&sblock, sblock.fs_bsize); 23692712Siedowse sblock.fs_fragshift = ilog2(sblock.fs_frag); 2371558Srgrimes if (sblock.fs_frag > MAXFRAG) { 23893775Sbde printf("fragment size %d is still too small (can't happen)\n", 2391558Srgrimes sblock.fs_bsize / MAXFRAG); 2401558Srgrimes exit(21); 2411558Srgrimes } 24298542Smckusick sblock.fs_fsbtodb = ilog2(sblock.fs_fsize / sectorsize); 24398542Smckusick sblock.fs_size = fssize = dbtofsb(&sblock, fssize); 24498542Smckusick if (Oflag == 1) { 24598542Smckusick sblock.fs_magic = FS_UFS1_MAGIC; 24698542Smckusick sblock.fs_sblockloc = numfrags(&sblock, SBLOCK_UFS1); 24798542Smckusick sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs1_daddr_t); 24898542Smckusick sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode); 24998542Smckusick sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) * 25098542Smckusick sizeof(ufs1_daddr_t)); 25198542Smckusick sblock.fs_old_inodefmt = FS_44INODEFMT; 25298542Smckusick sblock.fs_old_cgoffset = 0; 25398542Smckusick sblock.fs_old_cgmask = 0xffffffff; 25498542Smckusick sblock.fs_old_size = sblock.fs_size; 25598542Smckusick sblock.fs_old_rotdelay = 0; 25698542Smckusick sblock.fs_old_rps = 60; 25798542Smckusick sblock.fs_old_nspf = sblock.fs_fsize / sectorsize; 25898542Smckusick sblock.fs_old_cpg = 1; 25998542Smckusick sblock.fs_old_interleave = 1; 26098542Smckusick sblock.fs_old_trackskew = 0; 26198542Smckusick sblock.fs_old_cpc = 0; 26298542Smckusick sblock.fs_old_postblformat = 1; 26398542Smckusick sblock.fs_old_nrpos = 1; 26498542Smckusick } else { 26598542Smckusick sblock.fs_magic = FS_UFS2_MAGIC; 26698542Smckusick sblock.fs_sblockloc = numfrags(&sblock, SBLOCK_UFS2); 26798542Smckusick sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs2_daddr_t); 26898542Smckusick sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode); 26998542Smckusick sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) * 27098542Smckusick sizeof(ufs2_daddr_t)); 27198542Smckusick } 2721558Srgrimes sblock.fs_sblkno = 27398542Smckusick roundup(howmany(lfragtosize(&sblock, sblock.fs_sblockloc) + 27498542Smckusick SBLOCKSIZE, sblock.fs_fsize), sblock.fs_frag); 27598542Smckusick sblock.fs_cblkno = sblock.fs_sblkno + 27698542Smckusick roundup(howmany(SBLOCKSIZE, sblock.fs_fsize), sblock.fs_frag); 2771558Srgrimes sblock.fs_iblkno = sblock.fs_cblkno + sblock.fs_frag; 2781558Srgrimes sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1; 2791558Srgrimes for (sizepb = sblock.fs_bsize, i = 0; i < NIADDR; i++) { 2801558Srgrimes sizepb *= NINDIR(&sblock); 2811558Srgrimes sblock.fs_maxfilesize += sizepb; 2821558Srgrimes } 2831558Srgrimes /* 28498542Smckusick * Calculate the number of blocks to put into each cylinder group. 28598542Smckusick * 28698542Smckusick * This algorithm selects the number of blocks per cylinder 28798542Smckusick * group. The first goal is to have at least enough data blocks 28898542Smckusick * in each cylinder group to meet the density requirement. Once 28998542Smckusick * this goal is achieved we try to expand to have at least 29098542Smckusick * MINCYLGRPS cylinder groups. Once this goal is achieved, we 29198542Smckusick * pack as many blocks into each cylinder group map as will fit. 29298542Smckusick * 29398542Smckusick * We start by calculating the smallest number of blocks that we 29498542Smckusick * can put into each cylinder group. If this is too big, we reduce 29598542Smckusick * the density until it fits. 2961558Srgrimes */ 29798542Smckusick origdensity = density; 29898542Smckusick for (;;) { 29998542Smckusick fragsperinode = numfrags(&sblock, density); 30098542Smckusick minfpg = fragsperinode * INOPB(&sblock); 30198542Smckusick if (minfpg > sblock.fs_size) 30298542Smckusick minfpg = sblock.fs_size; 30398542Smckusick sblock.fs_ipg = INOPB(&sblock); 30498542Smckusick sblock.fs_fpg = roundup(sblock.fs_iblkno + 30598542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 30698542Smckusick if (sblock.fs_fpg < minfpg) 30798542Smckusick sblock.fs_fpg = minfpg; 30898542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 30998542Smckusick INOPB(&sblock)); 31098542Smckusick sblock.fs_fpg = roundup(sblock.fs_iblkno + 31198542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 31298542Smckusick if (sblock.fs_fpg < minfpg) 31398542Smckusick sblock.fs_fpg = minfpg; 31498542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 31598542Smckusick INOPB(&sblock)); 31698542Smckusick if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize) 31798542Smckusick break; 31898542Smckusick density -= sblock.fs_fsize; 3191558Srgrimes } 32098542Smckusick if (density != origdensity) 32198542Smckusick printf("density reduced from %d to %d\n", origdensity, density); 3221558Srgrimes /* 32398542Smckusick * Start packing more blocks into the cylinder group until 32498542Smckusick * it cannot grow any larger, the number of cylinder groups 32598542Smckusick * drops below MINCYLGRPS, or we reach the size requested. 3261558Srgrimes */ 32798542Smckusick for ( ; sblock.fs_fpg < maxblkspercg; sblock.fs_fpg += sblock.fs_frag) { 32898542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 32998542Smckusick INOPB(&sblock)); 33098542Smckusick if (sblock.fs_size / sblock.fs_fpg < MINCYLGRPS) 3311558Srgrimes break; 33298542Smckusick if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize) 33398542Smckusick continue; 33498542Smckusick if (CGSIZE(&sblock) == (unsigned long)sblock.fs_bsize) 3351558Srgrimes break; 33698542Smckusick sblock.fs_fpg -= sblock.fs_frag; 33798542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 33898542Smckusick INOPB(&sblock)); 33998542Smckusick break; 3401558Srgrimes } 3418871Srgrimes /* 34298542Smckusick * Check to be sure that the last cylinder group has enough blocks 34398542Smckusick * to be viable. If it is too small, reduce the number of blocks 34498542Smckusick * per cylinder group which will have the effect of moving more 34598542Smckusick * blocks into the last cylinder group. 3461558Srgrimes */ 34798542Smckusick optimalfpg = sblock.fs_fpg; 34898542Smckusick for (;;) { 34998542Smckusick sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg); 35098542Smckusick lastminfpg = roundup(sblock.fs_iblkno + 35198542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 35298542Smckusick if (sblock.fs_size < lastminfpg) { 35399796Sbde printf("Filesystem size %jd < minimum size of %d\n", 35499796Sbde (intmax_t)sblock.fs_size, lastminfpg); 35598542Smckusick exit(28); 35698542Smckusick } 35798542Smckusick if (sblock.fs_size % sblock.fs_fpg >= lastminfpg || 35898542Smckusick sblock.fs_size % sblock.fs_fpg == 0) 35998542Smckusick break; 36098542Smckusick sblock.fs_fpg -= sblock.fs_frag; 36198542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 36298542Smckusick INOPB(&sblock)); 3631558Srgrimes } 36498542Smckusick if (optimalfpg != sblock.fs_fpg) 36598542Smckusick printf("Reduced frags per cylinder group from %d to %d %s\n", 36698542Smckusick optimalfpg, sblock.fs_fpg, "to enlarge last cyl group"); 3671558Srgrimes sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock)); 3681558Srgrimes sblock.fs_dblkno = sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock); 36998542Smckusick if (Oflag == 1) { 37098542Smckusick sblock.fs_old_spc = sblock.fs_fpg * sblock.fs_old_nspf; 37198542Smckusick sblock.fs_old_nsect = sblock.fs_old_spc; 37298542Smckusick sblock.fs_old_npsect = sblock.fs_old_spc; 37398542Smckusick sblock.fs_old_ncyl = sblock.fs_ncg; 3741558Srgrimes } 3751558Srgrimes /* 3761558Srgrimes * fill in remaining fields of the super block 3771558Srgrimes */ 3781558Srgrimes sblock.fs_csaddr = cgdmin(&sblock, 0); 3791558Srgrimes sblock.fs_cssize = 3801558Srgrimes fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum)); 3811558Srgrimes fscs = (struct csum *)calloc(1, sblock.fs_cssize); 38237664Scharnier if (fscs == NULL) 38337664Scharnier errx(31, "calloc failed"); 38498542Smckusick sblock.fs_sbsize = fragroundup(&sblock, sizeof(struct fs)); 385105423Smckusick if (sblock.fs_sbsize > SBLOCKSIZE) 386105423Smckusick sblock.fs_sbsize = SBLOCKSIZE; 3871558Srgrimes sblock.fs_minfree = minfree; 3881558Srgrimes sblock.fs_maxbpg = maxbpg; 3891558Srgrimes sblock.fs_optim = opt; 3901558Srgrimes sblock.fs_cgrotor = 0; 39198542Smckusick sblock.fs_pendingblocks = 0; 39298542Smckusick sblock.fs_pendinginodes = 0; 3931558Srgrimes sblock.fs_fmod = 0; 3941558Srgrimes sblock.fs_ronly = 0; 39598542Smckusick sblock.fs_state = 0; 3962294Sdg sblock.fs_clean = 1; 39724149Sguido sblock.fs_id[0] = (long)utime; 39824215Sache sblock.fs_id[1] = random(); 39998542Smckusick sblock.fs_fsmnt[0] = '\0'; 40098542Smckusick csfrags = howmany(sblock.fs_cssize, sblock.fs_fsize); 40198542Smckusick sblock.fs_dsize = sblock.fs_size - sblock.fs_sblkno - 40298542Smckusick sblock.fs_ncg * (sblock.fs_dblkno - sblock.fs_sblkno); 40398542Smckusick sblock.fs_cstotal.cs_nbfree = 40498542Smckusick fragstoblks(&sblock, sblock.fs_dsize) - 40598542Smckusick howmany(csfrags, sblock.fs_frag); 40698542Smckusick sblock.fs_cstotal.cs_nffree = 40798542Smckusick fragnum(&sblock, sblock.fs_size) + 40898542Smckusick (csfrags > 0 ? sblock.fs_frag - csfrags : 0); 40998542Smckusick sblock.fs_cstotal.cs_nifree = sblock.fs_ncg * sblock.fs_ipg - ROOTINO; 41098542Smckusick sblock.fs_cstotal.cs_ndir = 0; 41198542Smckusick sblock.fs_dsize -= csfrags; 41298542Smckusick sblock.fs_time = utime; 41398542Smckusick if (Oflag == 1) { 41498542Smckusick sblock.fs_old_time = utime; 41598542Smckusick sblock.fs_old_dsize = sblock.fs_dsize; 41698542Smckusick sblock.fs_old_csaddr = sblock.fs_csaddr; 41798542Smckusick sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir; 41898542Smckusick sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree; 41998542Smckusick sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree; 42098542Smckusick sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree; 42198542Smckusick } 42224149Sguido 4231558Srgrimes /* 424102231Strhodes * Dump out summary information about file system. 4251558Srgrimes */ 42698542Smckusick# define B2MBFACTOR (1 / (1024.0 * 1024.0)) 42799796Sbde printf("%s: %.1fMB (%jd sectors) block size %d, fragment size %d\n", 42898542Smckusick fsys, (float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR, 42999796Sbde (intmax_t)fsbtodb(&sblock, sblock.fs_size), sblock.fs_bsize, 43099796Sbde sblock.fs_fsize); 43198542Smckusick printf("\tusing %d cylinder groups of %.2fMB, %d blks, %d inodes.\n", 43298542Smckusick sblock.fs_ncg, (float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR, 43398542Smckusick sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg); 43498542Smckusick if (sblock.fs_flags & FS_DOSOFTDEP) 43598542Smckusick printf("\twith soft updates\n"); 43698542Smckusick# undef B2MBFACTOR 4371558Srgrimes /* 4381558Srgrimes * Now build the cylinders group blocks and 4391558Srgrimes * then print out indices of cylinder groups. 4401558Srgrimes */ 44177420Sphk printf("super-block backups (for fsck -b #) at:\n"); 44213769Sjoerg i = 0; 44313769Sjoerg width = charsperline(); 44498542Smckusick /* 44598542Smckusick * Make a copy of the superblock into the buffer that we will be 44698542Smckusick * writing out in each cylinder group. 44798542Smckusick */ 44898542Smckusick bcopy((char *)&sblock, iobuf, SBLOCKSIZE); 4491558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) { 4501558Srgrimes initcg(cylno, utime); 45199796Sbde j = snprintf(tmpbuf, sizeof(tmpbuf), " %jd%s", 45299796Sbde (intmax_t)fsbtodb(&sblock, cgsblock(&sblock, cylno)), 45385860Sphk cylno < (sblock.fs_ncg-1) ? "," : ""); 45481980Sbrian if (j < 0) 45581980Sbrian tmpbuf[j = 0] = '\0'; 45637239Sbde if (i + j >= width) { 4571558Srgrimes printf("\n"); 45813769Sjoerg i = 0; 45913769Sjoerg } 46013769Sjoerg i += j; 46113769Sjoerg printf("%s", tmpbuf); 4628218Sdg fflush(stdout); 4631558Srgrimes } 46477420Sphk printf("\n"); 46577420Sphk if (Nflag) 4661558Srgrimes exit(0); 4671558Srgrimes /* 468102231Strhodes * Now construct the initial file system, 4691558Srgrimes * then write out the super-block. 4701558Srgrimes */ 4711558Srgrimes fsinit(utime); 47298542Smckusick if (Oflag == 1) { 47398542Smckusick sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir; 47498542Smckusick sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree; 47598542Smckusick sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree; 47698542Smckusick sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree; 47798542Smckusick } 47898542Smckusick wtfs(lfragtosize(&sblock, sblock.fs_sblockloc) / sectorsize, 47998542Smckusick SBLOCKSIZE, (char *)&sblock); 4801558Srgrimes for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize) 4811558Srgrimes wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)), 4821558Srgrimes sblock.fs_cssize - i < sblock.fs_bsize ? 48385860Sphk sblock.fs_cssize - i : sblock.fs_bsize, 4841558Srgrimes ((char *)fscs) + i); 48567478Sjwd wtfsflush(); 4861558Srgrimes /* 4871558Srgrimes * Update information about this partion in pack 4881558Srgrimes * label, to that it may be updated on disk. 4891558Srgrimes */ 49095357Sphk if (pp != NULL) { 49195357Sphk pp->p_fstype = FS_BSDFFS; 49295357Sphk pp->p_fsize = sblock.fs_fsize; 49395357Sphk pp->p_frag = sblock.fs_frag; 49498542Smckusick pp->p_cpg = sblock.fs_fpg; 49595357Sphk } 4961558Srgrimes} 4971558Srgrimes 4981558Srgrimes/* 4991558Srgrimes * Initialize a cylinder group. 5001558Srgrimes */ 50137664Scharniervoid 50292711Siedowseinitcg(int cylno, time_t utime) 5031558Srgrimes{ 50498542Smckusick long i, j, d, dlower, dupper, blkno, start; 50598542Smckusick ufs2_daddr_t cbase, dmax; 50698542Smckusick struct ufs1_dinode *dp1; 50798542Smckusick struct ufs2_dinode *dp2; 50892483Sphk struct csum *cs; 5091558Srgrimes 5101558Srgrimes /* 5111558Srgrimes * Determine block bounds for cylinder group. 5121558Srgrimes * Allow space for super block summary information in first 5131558Srgrimes * cylinder group. 5141558Srgrimes */ 5151558Srgrimes cbase = cgbase(&sblock, cylno); 5161558Srgrimes dmax = cbase + sblock.fs_fpg; 5171558Srgrimes if (dmax > sblock.fs_size) 5181558Srgrimes dmax = sblock.fs_size; 5191558Srgrimes dlower = cgsblock(&sblock, cylno) - cbase; 5201558Srgrimes dupper = cgdmin(&sblock, cylno) - cbase; 5211558Srgrimes if (cylno == 0) 5221558Srgrimes dupper += howmany(sblock.fs_cssize, sblock.fs_fsize); 52398542Smckusick cs = &fscs[cylno]; 52423682Speter memset(&acg, 0, sblock.fs_cgsize); 5251558Srgrimes acg.cg_time = utime; 5261558Srgrimes acg.cg_magic = CG_MAGIC; 5271558Srgrimes acg.cg_cgx = cylno; 5281558Srgrimes acg.cg_niblk = sblock.fs_ipg; 52998542Smckusick acg.cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ? 53098542Smckusick sblock.fs_ipg : 2 * INOPB(&sblock); 5311558Srgrimes acg.cg_ndblk = dmax - cbase; 5321558Srgrimes if (sblock.fs_contigsumsize > 0) 5331558Srgrimes acg.cg_nclusterblks = acg.cg_ndblk / sblock.fs_frag; 53498542Smckusick start = &acg.cg_space[0] - (u_char *)(&acg.cg_firstfield); 53598542Smckusick if (Oflag == 2) { 53698542Smckusick acg.cg_iusedoff = start; 53798542Smckusick } else { 53898542Smckusick acg.cg_old_ncyl = sblock.fs_old_cpg; 53998542Smckusick acg.cg_old_time = acg.cg_time; 54098542Smckusick acg.cg_time = 0; 54198542Smckusick acg.cg_old_niblk = acg.cg_niblk; 54298542Smckusick acg.cg_niblk = 0; 54398542Smckusick acg.cg_initediblk = 0; 54498542Smckusick acg.cg_old_btotoff = start; 54598542Smckusick acg.cg_old_boff = acg.cg_old_btotoff + 54698542Smckusick sblock.fs_old_cpg * sizeof(int32_t); 54798542Smckusick acg.cg_iusedoff = acg.cg_old_boff + 54898542Smckusick sblock.fs_old_cpg * sizeof(u_int16_t); 54998542Smckusick } 550103949Smike acg.cg_freeoff = acg.cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT); 551103949Smike acg.cg_nextfreeoff = acg.cg_freeoff + howmany(sblock.fs_fpg, CHAR_BIT); 55298542Smckusick if (sblock.fs_contigsumsize > 0) { 5531558Srgrimes acg.cg_clustersumoff = 55498542Smckusick roundup(acg.cg_nextfreeoff, sizeof(u_int32_t)); 55598542Smckusick acg.cg_clustersumoff -= sizeof(u_int32_t); 5561558Srgrimes acg.cg_clusteroff = acg.cg_clustersumoff + 55738579Sdfr (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t); 55898542Smckusick acg.cg_nextfreeoff = acg.cg_clusteroff + 559103949Smike howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT); 5601558Srgrimes } 56198542Smckusick if (acg.cg_nextfreeoff > sblock.fs_cgsize) { 5621558Srgrimes printf("Panic: cylinder group too big\n"); 5631558Srgrimes exit(37); 5641558Srgrimes } 5651558Srgrimes acg.cg_cs.cs_nifree += sblock.fs_ipg; 5661558Srgrimes if (cylno == 0) 56798542Smckusick for (i = 0; i < (long)ROOTINO; i++) { 5681558Srgrimes setbit(cg_inosused(&acg), i); 5691558Srgrimes acg.cg_cs.cs_nifree--; 5701558Srgrimes } 5711558Srgrimes if (cylno > 0) { 5721558Srgrimes /* 5731558Srgrimes * In cylno 0, beginning space is reserved 5741558Srgrimes * for boot and super blocks. 5751558Srgrimes */ 5761558Srgrimes for (d = 0; d < dlower; d += sblock.fs_frag) { 5771558Srgrimes blkno = d / sblock.fs_frag; 5781558Srgrimes setblock(&sblock, cg_blksfree(&acg), blkno); 5791558Srgrimes if (sblock.fs_contigsumsize > 0) 5801558Srgrimes setbit(cg_clustersfree(&acg), blkno); 5811558Srgrimes acg.cg_cs.cs_nbfree++; 5821558Srgrimes } 5831558Srgrimes } 58437664Scharnier if ((i = dupper % sblock.fs_frag)) { 5851558Srgrimes acg.cg_frsum[sblock.fs_frag - i]++; 5861558Srgrimes for (d = dupper + sblock.fs_frag - i; dupper < d; dupper++) { 5871558Srgrimes setbit(cg_blksfree(&acg), dupper); 5881558Srgrimes acg.cg_cs.cs_nffree++; 5891558Srgrimes } 5901558Srgrimes } 59198542Smckusick for (d = dupper; d + sblock.fs_frag <= acg.cg_ndblk; 59298542Smckusick d += sblock.fs_frag) { 5931558Srgrimes blkno = d / sblock.fs_frag; 5941558Srgrimes setblock(&sblock, cg_blksfree(&acg), blkno); 5951558Srgrimes if (sblock.fs_contigsumsize > 0) 5961558Srgrimes setbit(cg_clustersfree(&acg), blkno); 5971558Srgrimes acg.cg_cs.cs_nbfree++; 5981558Srgrimes } 59998542Smckusick if (d < acg.cg_ndblk) { 60098542Smckusick acg.cg_frsum[acg.cg_ndblk - d]++; 60198542Smckusick for (; d < acg.cg_ndblk; d++) { 6021558Srgrimes setbit(cg_blksfree(&acg), d); 6031558Srgrimes acg.cg_cs.cs_nffree++; 6041558Srgrimes } 6051558Srgrimes } 6061558Srgrimes if (sblock.fs_contigsumsize > 0) { 60723682Speter int32_t *sump = cg_clustersum(&acg); 6081558Srgrimes u_char *mapp = cg_clustersfree(&acg); 6091558Srgrimes int map = *mapp++; 6101558Srgrimes int bit = 1; 6111558Srgrimes int run = 0; 6121558Srgrimes 6131558Srgrimes for (i = 0; i < acg.cg_nclusterblks; i++) { 61485860Sphk if ((map & bit) != 0) 6151558Srgrimes run++; 61685860Sphk else if (run != 0) { 6171558Srgrimes if (run > sblock.fs_contigsumsize) 6181558Srgrimes run = sblock.fs_contigsumsize; 6191558Srgrimes sump[run]++; 6201558Srgrimes run = 0; 6211558Srgrimes } 622103949Smike if ((i & (CHAR_BIT - 1)) != CHAR_BIT - 1) 6231558Srgrimes bit <<= 1; 62485860Sphk else { 6251558Srgrimes map = *mapp++; 6261558Srgrimes bit = 1; 6271558Srgrimes } 6281558Srgrimes } 6291558Srgrimes if (run != 0) { 6301558Srgrimes if (run > sblock.fs_contigsumsize) 6311558Srgrimes run = sblock.fs_contigsumsize; 6321558Srgrimes sump[run]++; 6331558Srgrimes } 6341558Srgrimes } 6351558Srgrimes *cs = acg.cg_cs; 63698542Smckusick /* 63798542Smckusick * Write out the duplicate super block, the cylinder group map 63898542Smckusick * and two blocks worth of inodes in a single write. 63998542Smckusick */ 64098542Smckusick start = sblock.fs_bsize > SBLOCKSIZE ? sblock.fs_bsize : SBLOCKSIZE; 64198542Smckusick bcopy((char *)&acg, &iobuf[start], sblock.fs_cgsize); 64298542Smckusick start += sblock.fs_bsize; 64398542Smckusick dp1 = (struct ufs1_dinode *)(&iobuf[start]); 64498542Smckusick dp2 = (struct ufs2_dinode *)(&iobuf[start]); 64598542Smckusick for (i = 0; i < acg.cg_initediblk; i++) { 64698542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 64798542Smckusick dp1->di_gen = random(); 64898542Smckusick dp1++; 64998542Smckusick } else { 65098542Smckusick dp2->di_gen = random(); 65198542Smckusick dp2++; 65298542Smckusick } 65398542Smckusick } 65498542Smckusick wtfs(fsbtodb(&sblock, cgsblock(&sblock, cylno)), iobufsize, iobuf); 65598542Smckusick /* 656102231Strhodes * For the old file system, we have to initialize all the inodes. 65798542Smckusick */ 65898542Smckusick if (Oflag == 1) { 65998542Smckusick for (i = 2 * sblock.fs_frag; 66098542Smckusick i < sblock.fs_ipg / INOPF(&sblock); 66198542Smckusick i += sblock.fs_frag) { 66298542Smckusick dp1 = (struct ufs1_dinode *)(&iobuf[start]); 66398542Smckusick for (j = 0; j < INOPB(&sblock); j++) { 66498542Smckusick dp1->di_gen = random(); 66598542Smckusick dp1++; 66698542Smckusick } 66798542Smckusick wtfs(fsbtodb(&sblock, cgimin(&sblock, cylno) + i), 66898542Smckusick sblock.fs_bsize, &iobuf[start]); 66998542Smckusick } 67098542Smckusick } 6711558Srgrimes} 6721558Srgrimes 6731558Srgrimes/* 674102231Strhodes * initialize the file system 6751558Srgrimes */ 6761558Srgrimes#define PREDEFDIR 2 6771558Srgrimes 6781558Srgrimesstruct direct root_dir[] = { 6791558Srgrimes { ROOTINO, sizeof(struct direct), DT_DIR, 1, "." }, 6801558Srgrimes { ROOTINO, sizeof(struct direct), DT_DIR, 2, ".." }, 6811558Srgrimes}; 6821558Srgrimes 68337664Scharniervoid 68492711Siedowsefsinit(time_t utime) 6851558Srgrimes{ 68698542Smckusick union dinode node; 6871558Srgrimes 68898542Smckusick memset(&node, 0, sizeof node); 68998542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 69098542Smckusick /* 69198542Smckusick * initialize the node 69298542Smckusick */ 69398542Smckusick node.dp1.di_atime = utime; 69498542Smckusick node.dp1.di_mtime = utime; 69598542Smckusick node.dp1.di_ctime = utime; 69698542Smckusick /* 69798542Smckusick * create the root directory 69898542Smckusick */ 69998542Smckusick node.dp1.di_mode = IFDIR | UMASK; 70098542Smckusick node.dp1.di_nlink = PREDEFDIR; 70198542Smckusick node.dp1.di_size = makedir(root_dir, PREDEFDIR); 70298542Smckusick node.dp1.di_db[0] = alloc(sblock.fs_fsize, node.dp1.di_mode); 70398542Smckusick node.dp1.di_blocks = 70498542Smckusick btodb(fragroundup(&sblock, node.dp1.di_size)); 70598542Smckusick wtfs(fsbtodb(&sblock, node.dp1.di_db[0]), sblock.fs_fsize, 70698542Smckusick iobuf); 70798542Smckusick } else { 70898542Smckusick /* 70998542Smckusick * initialize the node 71098542Smckusick */ 71198542Smckusick node.dp2.di_atime = utime; 71298542Smckusick node.dp2.di_mtime = utime; 71398542Smckusick node.dp2.di_ctime = utime; 714100231Sroberto node.dp2.di_birthtime = utime; 71598542Smckusick /* 71698542Smckusick * create the root directory 71798542Smckusick */ 71898542Smckusick node.dp2.di_mode = IFDIR | UMASK; 71998542Smckusick node.dp2.di_nlink = PREDEFDIR; 72098542Smckusick node.dp2.di_size = makedir(root_dir, PREDEFDIR); 72198542Smckusick node.dp2.di_db[0] = alloc(sblock.fs_fsize, node.dp2.di_mode); 72298542Smckusick node.dp2.di_blocks = 72398542Smckusick btodb(fragroundup(&sblock, node.dp2.di_size)); 72498542Smckusick wtfs(fsbtodb(&sblock, node.dp2.di_db[0]), sblock.fs_fsize, 72598542Smckusick iobuf); 72698542Smckusick } 7271558Srgrimes iput(&node, ROOTINO); 7281558Srgrimes} 7291558Srgrimes 7301558Srgrimes/* 73198542Smckusick * construct a set of directory entries in "iobuf". 7321558Srgrimes * return size of directory. 7331558Srgrimes */ 73437664Scharnierint 73592711Siedowsemakedir(struct direct *protodir, int entries) 7361558Srgrimes{ 7371558Srgrimes char *cp; 7381558Srgrimes int i, spcleft; 7391558Srgrimes 7401558Srgrimes spcleft = DIRBLKSIZ; 74198542Smckusick memset(iobuf, 0, DIRBLKSIZ); 74298542Smckusick for (cp = iobuf, i = 0; i < entries - 1; i++) { 7431558Srgrimes protodir[i].d_reclen = DIRSIZ(0, &protodir[i]); 74423682Speter memmove(cp, &protodir[i], protodir[i].d_reclen); 7451558Srgrimes cp += protodir[i].d_reclen; 7461558Srgrimes spcleft -= protodir[i].d_reclen; 7471558Srgrimes } 7481558Srgrimes protodir[i].d_reclen = spcleft; 74923682Speter memmove(cp, &protodir[i], DIRSIZ(0, &protodir[i])); 7501558Srgrimes return (DIRBLKSIZ); 7511558Srgrimes} 7521558Srgrimes 7531558Srgrimes/* 7541558Srgrimes * allocate a block or frag 7551558Srgrimes */ 75698542Smckusickufs2_daddr_t 75792711Siedowsealloc(int size, int mode) 7581558Srgrimes{ 75998542Smckusick int i, d, blkno, frag; 7601558Srgrimes 7611558Srgrimes rdfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 7621558Srgrimes (char *)&acg); 7631558Srgrimes if (acg.cg_magic != CG_MAGIC) { 7641558Srgrimes printf("cg 0: bad magic number\n"); 7651558Srgrimes return (0); 7661558Srgrimes } 7671558Srgrimes if (acg.cg_cs.cs_nbfree == 0) { 7681558Srgrimes printf("first cylinder group ran out of space\n"); 7691558Srgrimes return (0); 7701558Srgrimes } 7711558Srgrimes for (d = 0; d < acg.cg_ndblk; d += sblock.fs_frag) 7721558Srgrimes if (isblock(&sblock, cg_blksfree(&acg), d / sblock.fs_frag)) 7731558Srgrimes goto goth; 7741558Srgrimes printf("internal error: can't find block in cyl 0\n"); 7751558Srgrimes return (0); 7761558Srgrimesgoth: 7771558Srgrimes blkno = fragstoblks(&sblock, d); 7781558Srgrimes clrblock(&sblock, cg_blksfree(&acg), blkno); 77923682Speter if (sblock.fs_contigsumsize > 0) 78023682Speter clrbit(cg_clustersfree(&acg), blkno); 7811558Srgrimes acg.cg_cs.cs_nbfree--; 7821558Srgrimes sblock.fs_cstotal.cs_nbfree--; 7831558Srgrimes fscs[0].cs_nbfree--; 7841558Srgrimes if (mode & IFDIR) { 7851558Srgrimes acg.cg_cs.cs_ndir++; 7861558Srgrimes sblock.fs_cstotal.cs_ndir++; 7871558Srgrimes fscs[0].cs_ndir++; 7881558Srgrimes } 7891558Srgrimes if (size != sblock.fs_bsize) { 7901558Srgrimes frag = howmany(size, sblock.fs_fsize); 7911558Srgrimes fscs[0].cs_nffree += sblock.fs_frag - frag; 7921558Srgrimes sblock.fs_cstotal.cs_nffree += sblock.fs_frag - frag; 7931558Srgrimes acg.cg_cs.cs_nffree += sblock.fs_frag - frag; 7941558Srgrimes acg.cg_frsum[sblock.fs_frag - frag]++; 7951558Srgrimes for (i = frag; i < sblock.fs_frag; i++) 7961558Srgrimes setbit(cg_blksfree(&acg), d + i); 7971558Srgrimes } 7981558Srgrimes wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 7991558Srgrimes (char *)&acg); 80098542Smckusick return ((ufs2_daddr_t)d); 8011558Srgrimes} 8021558Srgrimes 8031558Srgrimes/* 8041558Srgrimes * Allocate an inode on the disk 8051558Srgrimes */ 80637664Scharniervoid 80798542Smckusickiput(union dinode *ip, ino_t ino) 8081558Srgrimes{ 80998542Smckusick ufs2_daddr_t d; 8101558Srgrimes int c; 8111558Srgrimes 8121558Srgrimes c = ino_to_cg(&sblock, ino); 8131558Srgrimes rdfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 8141558Srgrimes (char *)&acg); 8151558Srgrimes if (acg.cg_magic != CG_MAGIC) { 8161558Srgrimes printf("cg 0: bad magic number\n"); 8171558Srgrimes exit(31); 8181558Srgrimes } 8191558Srgrimes acg.cg_cs.cs_nifree--; 8201558Srgrimes setbit(cg_inosused(&acg), ino); 8211558Srgrimes wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 8221558Srgrimes (char *)&acg); 8231558Srgrimes sblock.fs_cstotal.cs_nifree--; 8241558Srgrimes fscs[0].cs_nifree--; 82598542Smckusick if (ino >= (unsigned long)sblock.fs_ipg * sblock.fs_ncg) { 8261558Srgrimes printf("fsinit: inode value out of range (%d).\n", ino); 8271558Srgrimes exit(32); 8281558Srgrimes } 8291558Srgrimes d = fsbtodb(&sblock, ino_to_fsba(&sblock, ino)); 83098542Smckusick rdfs(d, sblock.fs_bsize, (char *)iobuf); 83198542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 83298542Smckusick ((struct ufs1_dinode *)iobuf)[ino_to_fsbo(&sblock, ino)] = 83398542Smckusick ip->dp1; 83498542Smckusick else 83598542Smckusick ((struct ufs2_dinode *)iobuf)[ino_to_fsbo(&sblock, ino)] = 83698542Smckusick ip->dp2; 83798542Smckusick wtfs(d, sblock.fs_bsize, (char *)iobuf); 8381558Srgrimes} 8391558Srgrimes 8401558Srgrimes/* 841102231Strhodes * read a block from the file system 8421558Srgrimes */ 84337664Scharniervoid 84498542Smckusickrdfs(ufs2_daddr_t bno, int size, char *bf) 8451558Srgrimes{ 8461558Srgrimes int n; 8471558Srgrimes 84867478Sjwd wtfsflush(); 84995357Sphk if (lseek(fso, (off_t)bno * sectorsize, 0) < 0) { 85037239Sbde printf("seek error: %ld\n", (long)bno); 85137664Scharnier err(33, "rdfs"); 8521558Srgrimes } 85395357Sphk n = read(fso, bf, size); 8541558Srgrimes if (n != size) { 85537239Sbde printf("read error: %ld\n", (long)bno); 85637664Scharnier err(34, "rdfs"); 8571558Srgrimes } 8581558Srgrimes} 8591558Srgrimes 86067239Speter#define WCSIZE (128 * 1024) 86198542Smckusickufs2_daddr_t wc_sect; /* units of sectorsize */ 86267239Speterint wc_end; /* bytes */ 86367239Speterstatic char wc[WCSIZE]; /* bytes */ 86467239Speter 8651558Srgrimes/* 86667478Sjwd * Flush dirty write behind buffer. 86767478Sjwd */ 86893737Sphkstatic void 86967478Sjwdwtfsflush() 87067478Sjwd{ 87167478Sjwd int n; 87267478Sjwd if (wc_end) { 87367478Sjwd if (lseek(fso, (off_t)wc_sect * sectorsize, SEEK_SET) < 0) { 87467478Sjwd printf("seek error: %ld\n", (long)wc_sect); 87567478Sjwd err(35, "wtfs - writecombine"); 87667478Sjwd } 87767478Sjwd n = write(fso, wc, wc_end); 87867478Sjwd if (n != wc_end) { 87967478Sjwd printf("write error: %ld\n", (long)wc_sect); 88067478Sjwd err(36, "wtfs - writecombine"); 88167478Sjwd } 88267478Sjwd wc_end = 0; 88367478Sjwd } 88467478Sjwd} 88567478Sjwd 88667478Sjwd/* 887102231Strhodes * write a block to the file system 8881558Srgrimes */ 88993737Sphkstatic void 89098542Smckusickwtfs(ufs2_daddr_t bno, int size, char *bf) 8911558Srgrimes{ 89292711Siedowse int done, n; 8931558Srgrimes 8941558Srgrimes if (Nflag) 8951558Srgrimes return; 89667239Speter done = 0; 89767239Speter if (wc_end == 0 && size <= WCSIZE) { 89867239Speter wc_sect = bno; 89967239Speter bcopy(bf, wc, size); 90067239Speter wc_end = size; 90167239Speter if (wc_end < WCSIZE) 90267239Speter return; 90367239Speter done = 1; 90467239Speter } 90567479Sjwd if ((off_t)wc_sect * sectorsize + wc_end == (off_t)bno * sectorsize && 90667239Speter wc_end + size <= WCSIZE) { 90767239Speter bcopy(bf, wc + wc_end, size); 90867239Speter wc_end += size; 90967239Speter if (wc_end < WCSIZE) 91067239Speter return; 91167239Speter done = 1; 91267239Speter } 91367478Sjwd wtfsflush(); 91467239Speter if (done) 91567239Speter return; 9161558Srgrimes if (lseek(fso, (off_t)bno * sectorsize, SEEK_SET) < 0) { 91737239Sbde printf("seek error: %ld\n", (long)bno); 91837664Scharnier err(35, "wtfs"); 9191558Srgrimes } 9201558Srgrimes n = write(fso, bf, size); 9211558Srgrimes if (n != size) { 92237239Sbde printf("write error: %ld\n", (long)bno); 92337664Scharnier err(36, "wtfs"); 9241558Srgrimes } 9251558Srgrimes} 9261558Srgrimes 9271558Srgrimes/* 9281558Srgrimes * check if a block is available 9291558Srgrimes */ 93093737Sphkstatic int 93192711Siedowseisblock(struct fs *fs, unsigned char *cp, int h) 9321558Srgrimes{ 9331558Srgrimes unsigned char mask; 9341558Srgrimes 9351558Srgrimes switch (fs->fs_frag) { 9361558Srgrimes case 8: 9371558Srgrimes return (cp[h] == 0xff); 9381558Srgrimes case 4: 9391558Srgrimes mask = 0x0f << ((h & 0x1) << 2); 9401558Srgrimes return ((cp[h >> 1] & mask) == mask); 9411558Srgrimes case 2: 9421558Srgrimes mask = 0x03 << ((h & 0x3) << 1); 9431558Srgrimes return ((cp[h >> 2] & mask) == mask); 9441558Srgrimes case 1: 9451558Srgrimes mask = 0x01 << (h & 0x7); 9461558Srgrimes return ((cp[h >> 3] & mask) == mask); 9471558Srgrimes default: 9481558Srgrimes fprintf(stderr, "isblock bad fs_frag %d\n", fs->fs_frag); 9491558Srgrimes return (0); 9501558Srgrimes } 9511558Srgrimes} 9521558Srgrimes 9531558Srgrimes/* 9541558Srgrimes * take a block out of the map 9551558Srgrimes */ 95693737Sphkstatic void 95792711Siedowseclrblock(struct fs *fs, unsigned char *cp, int h) 9581558Srgrimes{ 9591558Srgrimes switch ((fs)->fs_frag) { 9601558Srgrimes case 8: 9611558Srgrimes cp[h] = 0; 9621558Srgrimes return; 9631558Srgrimes case 4: 9641558Srgrimes cp[h >> 1] &= ~(0x0f << ((h & 0x1) << 2)); 9651558Srgrimes return; 9661558Srgrimes case 2: 9671558Srgrimes cp[h >> 2] &= ~(0x03 << ((h & 0x3) << 1)); 9681558Srgrimes return; 9691558Srgrimes case 1: 9701558Srgrimes cp[h >> 3] &= ~(0x01 << (h & 0x7)); 9711558Srgrimes return; 9721558Srgrimes default: 9731558Srgrimes fprintf(stderr, "clrblock bad fs_frag %d\n", fs->fs_frag); 9741558Srgrimes return; 9751558Srgrimes } 9761558Srgrimes} 9771558Srgrimes 9781558Srgrimes/* 9791558Srgrimes * put a block into the map 9801558Srgrimes */ 98193737Sphkstatic void 98292711Siedowsesetblock(struct fs *fs, unsigned char *cp, int h) 9831558Srgrimes{ 9841558Srgrimes switch (fs->fs_frag) { 9851558Srgrimes case 8: 9861558Srgrimes cp[h] = 0xff; 9871558Srgrimes return; 9881558Srgrimes case 4: 9891558Srgrimes cp[h >> 1] |= (0x0f << ((h & 0x1) << 2)); 9901558Srgrimes return; 9911558Srgrimes case 2: 9921558Srgrimes cp[h >> 2] |= (0x03 << ((h & 0x3) << 1)); 9931558Srgrimes return; 9941558Srgrimes case 1: 9951558Srgrimes cp[h >> 3] |= (0x01 << (h & 0x7)); 9961558Srgrimes return; 9971558Srgrimes default: 9981558Srgrimes fprintf(stderr, "setblock bad fs_frag %d\n", fs->fs_frag); 9991558Srgrimes return; 10001558Srgrimes } 10011558Srgrimes} 100213637Sjoerg 100313637Sjoerg/* 100413769Sjoerg * Determine the number of characters in a 100513637Sjoerg * single line. 100613637Sjoerg */ 100713637Sjoerg 100813637Sjoergstatic int 100992717Sphkcharsperline(void) 101013637Sjoerg{ 101113769Sjoerg int columns; 101213637Sjoerg char *cp; 101313637Sjoerg struct winsize ws; 101413637Sjoerg 101513637Sjoerg columns = 0; 101613637Sjoerg if (ioctl(0, TIOCGWINSZ, &ws) != -1) 101713637Sjoerg columns = ws.ws_col; 101813637Sjoerg if (columns == 0 && (cp = getenv("COLUMNS"))) 101913637Sjoerg columns = atoi(cp); 102013637Sjoerg if (columns == 0) 102113637Sjoerg columns = 80; /* last resort */ 102285860Sphk return (columns); 102313637Sjoerg} 102492712Siedowse 102592712Siedowsestatic int 102692712Siedowseilog2(int val) 102792712Siedowse{ 102892763Sphk u_int n; 102992712Siedowse 1030103949Smike for (n = 0; n < sizeof(n) * CHAR_BIT; n++) 103192712Siedowse if (1 << n == val) 103292712Siedowse return (n); 103392712Siedowse errx(1, "ilog2: %d is not a power of 2\n", val); 103492712Siedowse} 1035