mkfs.c revision 110671
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 110671 2003-02-11 03:06:45Z jmallett $"; 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 struct csum *fscs; 84110671Sjmallett#define sblock disk.d_fs 85110671Sjmallett#define acg disk.d_cg 861558Srgrimes 8798542Smckusickunion dinode { 8898542Smckusick struct ufs1_dinode dp1; 8998542Smckusick struct ufs2_dinode dp2; 9098542Smckusick}; 9198542Smckusick#define DIP(dp, field) \ 9298542Smckusick ((sblock.fs_magic == FS_UFS1_MAGIC) ? \ 9398542Smckusick (dp)->dp1.field : (dp)->dp2.field) 941558Srgrimes 9592717Sphkstatic int randinit; 9698542Smckusickstatic caddr_t iobuf; 9798542Smckusickstatic long iobufsize; 9898542Smckusickstatic ufs2_daddr_t alloc(int size, int mode); 9992717Sphkstatic int charsperline(void); 10093775Sbdestatic void clrblock(struct fs *, unsigned char *, int); 10193775Sbdestatic void fsinit(time_t); 10292712Siedowsestatic int ilog2(int); 10393775Sbdestatic void initcg(int, time_t); 10493775Sbdestatic int isblock(struct fs *, unsigned char *, int); 10598542Smckusickstatic void iput(union dinode *, ino_t); 10693775Sbdestatic int makedir(struct direct *, int); 10793775Sbdestatic void setblock(struct fs *, unsigned char *, int); 10898542Smckusickstatic void wtfs(ufs2_daddr_t, int, char *); 1091558Srgrimes 11037664Scharniervoid 11195357Sphkmkfs(struct partition *pp, char *fsys) 1121558Srgrimes{ 11398542Smckusick int fragsperinode, optimalfpg, origdensity, minfpg, lastminfpg; 11498542Smckusick long i, j, cylno, csfrags; 1151558Srgrimes time_t utime; 1161558Srgrimes quad_t sizepb; 11713769Sjoerg int width; 11813769Sjoerg char tmpbuf[100]; /* XXX this will break in about 2,500 years */ 1191558Srgrimes 120110671Sjmallett /* 121110671Sjmallett * Our blocks == sector size, and the version of UFS we are using is 122110671Sjmallett * specified by Oflag. 123110671Sjmallett */ 124110671Sjmallett disk.d_bsize = sectorsize; 125110671Sjmallett disk.d_ufs = Oflag; 12692722Sphk if (Rflag) 12792722Sphk utime = 1000000000; 12892722Sphk else 12992722Sphk time(&utime); 13092722Sphk if (!Rflag && !randinit) { 13124215Sache randinit = 1; 13226625Sache srandomdev(); 13324215Sache } 134107294Smckusick sblock.fs_old_flags = FS_FLAGS_UPDATED; 13598542Smckusick sblock.fs_flags = 0; 13675124Sbde if (Uflag) 13775078Sobrien sblock.fs_flags |= FS_DOSOFTDEP; 138110174Sgordon if (Lflag) 139110174Sgordon strlcpy(sblock.fs_volname, volumelabel, MAXVOLLEN); 1401558Srgrimes /* 141102231Strhodes * Validate the given file system size. 1421558Srgrimes * Verify that its last block can actually be accessed. 143102231Strhodes * Convert to file system fragment sized units. 1441558Srgrimes */ 14598542Smckusick if (fssize <= 0) { 14699796Sbde printf("preposterous size %jd\n", (intmax_t)fssize); 14798542Smckusick exit(13); 14898542Smckusick } 14920061Ssos wtfs(fssize - (realsectorsize / DEV_BSIZE), realsectorsize, 15092532Sbde (char *)&sblock); 1511558Srgrimes /* 152102231Strhodes * collect and verify the file system density info 15375377Smckusick */ 15475377Smckusick sblock.fs_avgfilesize = avgfilesize; 15575377Smckusick sblock.fs_avgfpdir = avgfilesperdir; 15675377Smckusick if (sblock.fs_avgfilesize <= 0) 15775377Smckusick printf("illegal expected average file size %d\n", 15875377Smckusick sblock.fs_avgfilesize), exit(14); 15975377Smckusick if (sblock.fs_avgfpdir <= 0) 16075377Smckusick printf("illegal expected number of files per directory %d\n", 16175377Smckusick sblock.fs_avgfpdir), exit(15); 16275377Smckusick /* 1631558Srgrimes * collect and verify the block and fragment sizes 1641558Srgrimes */ 1651558Srgrimes sblock.fs_bsize = bsize; 1661558Srgrimes sblock.fs_fsize = fsize; 1671558Srgrimes if (!POWEROF2(sblock.fs_bsize)) { 1681558Srgrimes printf("block size must be a power of 2, not %d\n", 1691558Srgrimes sblock.fs_bsize); 1701558Srgrimes exit(16); 1711558Srgrimes } 1721558Srgrimes if (!POWEROF2(sblock.fs_fsize)) { 1731558Srgrimes printf("fragment size must be a power of 2, not %d\n", 1741558Srgrimes sblock.fs_fsize); 1751558Srgrimes exit(17); 1761558Srgrimes } 1771558Srgrimes if (sblock.fs_fsize < sectorsize) { 17893775Sbde printf("increasing fragment size from %d to sector size (%d)\n", 1791558Srgrimes sblock.fs_fsize, sectorsize); 18093737Sphk sblock.fs_fsize = sectorsize; 1811558Srgrimes } 182107412Smckusick if (sblock.fs_bsize > MAXBSIZE) { 183107412Smckusick printf("decreasing block size from %d to maximum (%d)\n", 184107412Smckusick sblock.fs_bsize, MAXBSIZE); 185107412Smckusick sblock.fs_bsize = MAXBSIZE; 186107412Smckusick } 1871558Srgrimes if (sblock.fs_bsize < MINBSIZE) { 18893737Sphk printf("increasing block size from %d to minimum (%d)\n", 1891558Srgrimes sblock.fs_bsize, MINBSIZE); 19093737Sphk sblock.fs_bsize = MINBSIZE; 1911558Srgrimes } 192107412Smckusick if (sblock.fs_fsize > MAXBSIZE) { 193107412Smckusick printf("decreasing fragment size from %d to maximum (%d)\n", 194107412Smckusick sblock.fs_fsize, MAXBSIZE); 195107412Smckusick sblock.fs_fsize = MAXBSIZE; 196107412Smckusick } 1971558Srgrimes if (sblock.fs_bsize < sblock.fs_fsize) { 19893775Sbde printf("increasing block size from %d to fragment size (%d)\n", 19992532Sbde sblock.fs_bsize, sblock.fs_fsize); 20093737Sphk sblock.fs_bsize = sblock.fs_fsize; 2011558Srgrimes } 20293737Sphk if (sblock.fs_fsize * MAXFRAG < sblock.fs_bsize) { 20393775Sbde printf( 20493775Sbde "increasing fragment size from %d to block size / %d (%d)\n", 20593737Sphk sblock.fs_fsize, MAXFRAG, sblock.fs_bsize / MAXFRAG); 20693737Sphk sblock.fs_fsize = sblock.fs_bsize / MAXFRAG; 20793737Sphk } 20898542Smckusick if (maxbsize < bsize || !POWEROF2(maxbsize)) { 20998542Smckusick sblock.fs_maxbsize = sblock.fs_bsize; 21098542Smckusick printf("Extent size set to %d\n", sblock.fs_maxbsize); 21198542Smckusick } else if (sblock.fs_maxbsize > FS_MAXCONTIG * sblock.fs_bsize) { 21298542Smckusick sblock.fs_maxbsize = FS_MAXCONTIG * sblock.fs_bsize; 21398542Smckusick printf("Extent size reduced to %d\n", sblock.fs_maxbsize); 21498542Smckusick } else { 21598542Smckusick sblock.fs_maxbsize = maxbsize; 21698542Smckusick } 21798542Smckusick sblock.fs_maxcontig = maxcontig; 21898542Smckusick if (sblock.fs_maxcontig < sblock.fs_maxbsize / sblock.fs_bsize) { 21998542Smckusick sblock.fs_maxcontig = sblock.fs_maxbsize / sblock.fs_bsize; 22098542Smckusick printf("Maxcontig raised to %d\n", sblock.fs_maxbsize); 22198542Smckusick } 22298542Smckusick if (sblock.fs_maxcontig > 1) 22398542Smckusick sblock.fs_contigsumsize = MIN(sblock.fs_maxcontig,FS_MAXCONTIG); 2241558Srgrimes sblock.fs_bmask = ~(sblock.fs_bsize - 1); 2251558Srgrimes sblock.fs_fmask = ~(sblock.fs_fsize - 1); 2261558Srgrimes sblock.fs_qbmask = ~sblock.fs_bmask; 2271558Srgrimes sblock.fs_qfmask = ~sblock.fs_fmask; 22892712Siedowse sblock.fs_bshift = ilog2(sblock.fs_bsize); 22992712Siedowse sblock.fs_fshift = ilog2(sblock.fs_fsize); 2301558Srgrimes sblock.fs_frag = numfrags(&sblock, sblock.fs_bsize); 23192712Siedowse sblock.fs_fragshift = ilog2(sblock.fs_frag); 2321558Srgrimes if (sblock.fs_frag > MAXFRAG) { 23393775Sbde printf("fragment size %d is still too small (can't happen)\n", 2341558Srgrimes sblock.fs_bsize / MAXFRAG); 2351558Srgrimes exit(21); 2361558Srgrimes } 23798542Smckusick sblock.fs_fsbtodb = ilog2(sblock.fs_fsize / sectorsize); 23898542Smckusick sblock.fs_size = fssize = dbtofsb(&sblock, fssize); 23998542Smckusick if (Oflag == 1) { 24098542Smckusick sblock.fs_magic = FS_UFS1_MAGIC; 241107294Smckusick sblock.fs_sblockloc = SBLOCK_UFS1; 24298542Smckusick sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs1_daddr_t); 24398542Smckusick sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode); 24498542Smckusick sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) * 24598542Smckusick sizeof(ufs1_daddr_t)); 24698542Smckusick sblock.fs_old_inodefmt = FS_44INODEFMT; 24798542Smckusick sblock.fs_old_cgoffset = 0; 24898542Smckusick sblock.fs_old_cgmask = 0xffffffff; 24998542Smckusick sblock.fs_old_size = sblock.fs_size; 25098542Smckusick sblock.fs_old_rotdelay = 0; 25198542Smckusick sblock.fs_old_rps = 60; 25298542Smckusick sblock.fs_old_nspf = sblock.fs_fsize / sectorsize; 25398542Smckusick sblock.fs_old_cpg = 1; 25498542Smckusick sblock.fs_old_interleave = 1; 25598542Smckusick sblock.fs_old_trackskew = 0; 25698542Smckusick sblock.fs_old_cpc = 0; 25798542Smckusick sblock.fs_old_postblformat = 1; 25898542Smckusick sblock.fs_old_nrpos = 1; 25998542Smckusick } else { 26098542Smckusick sblock.fs_magic = FS_UFS2_MAGIC; 261107294Smckusick sblock.fs_sblockloc = SBLOCK_UFS2; 26298542Smckusick sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs2_daddr_t); 26398542Smckusick sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode); 26498542Smckusick sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) * 26598542Smckusick sizeof(ufs2_daddr_t)); 26698542Smckusick } 2671558Srgrimes sblock.fs_sblkno = 268107294Smckusick roundup(howmany(sblock.fs_sblockloc + SBLOCKSIZE, sblock.fs_fsize), 269107294Smckusick sblock.fs_frag); 27098542Smckusick sblock.fs_cblkno = sblock.fs_sblkno + 27198542Smckusick roundup(howmany(SBLOCKSIZE, sblock.fs_fsize), sblock.fs_frag); 2721558Srgrimes sblock.fs_iblkno = sblock.fs_cblkno + sblock.fs_frag; 2731558Srgrimes sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1; 2741558Srgrimes for (sizepb = sblock.fs_bsize, i = 0; i < NIADDR; i++) { 2751558Srgrimes sizepb *= NINDIR(&sblock); 2761558Srgrimes sblock.fs_maxfilesize += sizepb; 2771558Srgrimes } 2781558Srgrimes /* 27998542Smckusick * Calculate the number of blocks to put into each cylinder group. 28098542Smckusick * 28198542Smckusick * This algorithm selects the number of blocks per cylinder 28298542Smckusick * group. The first goal is to have at least enough data blocks 28398542Smckusick * in each cylinder group to meet the density requirement. Once 28498542Smckusick * this goal is achieved we try to expand to have at least 28598542Smckusick * MINCYLGRPS cylinder groups. Once this goal is achieved, we 28698542Smckusick * pack as many blocks into each cylinder group map as will fit. 28798542Smckusick * 28898542Smckusick * We start by calculating the smallest number of blocks that we 28998542Smckusick * can put into each cylinder group. If this is too big, we reduce 29098542Smckusick * the density until it fits. 2911558Srgrimes */ 29298542Smckusick origdensity = density; 29398542Smckusick for (;;) { 294107412Smckusick fragsperinode = MAX(numfrags(&sblock, density), 1); 29598542Smckusick minfpg = fragsperinode * INOPB(&sblock); 29698542Smckusick if (minfpg > sblock.fs_size) 29798542Smckusick minfpg = sblock.fs_size; 29898542Smckusick sblock.fs_ipg = INOPB(&sblock); 29998542Smckusick sblock.fs_fpg = roundup(sblock.fs_iblkno + 30098542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 30198542Smckusick if (sblock.fs_fpg < minfpg) 30298542Smckusick sblock.fs_fpg = minfpg; 30398542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 30498542Smckusick INOPB(&sblock)); 30598542Smckusick sblock.fs_fpg = roundup(sblock.fs_iblkno + 30698542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 30798542Smckusick if (sblock.fs_fpg < minfpg) 30898542Smckusick sblock.fs_fpg = minfpg; 30998542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 31098542Smckusick INOPB(&sblock)); 31198542Smckusick if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize) 31298542Smckusick break; 31398542Smckusick density -= sblock.fs_fsize; 3141558Srgrimes } 31598542Smckusick if (density != origdensity) 31698542Smckusick printf("density reduced from %d to %d\n", origdensity, density); 3171558Srgrimes /* 31898542Smckusick * Start packing more blocks into the cylinder group until 31998542Smckusick * it cannot grow any larger, the number of cylinder groups 32098542Smckusick * drops below MINCYLGRPS, or we reach the size requested. 3211558Srgrimes */ 32298542Smckusick for ( ; sblock.fs_fpg < maxblkspercg; sblock.fs_fpg += sblock.fs_frag) { 32398542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 32498542Smckusick INOPB(&sblock)); 32598542Smckusick if (sblock.fs_size / sblock.fs_fpg < MINCYLGRPS) 3261558Srgrimes break; 32798542Smckusick if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize) 32898542Smckusick continue; 32998542Smckusick if (CGSIZE(&sblock) == (unsigned long)sblock.fs_bsize) 3301558Srgrimes break; 33198542Smckusick sblock.fs_fpg -= sblock.fs_frag; 33298542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 33398542Smckusick INOPB(&sblock)); 33498542Smckusick break; 3351558Srgrimes } 3368871Srgrimes /* 33798542Smckusick * Check to be sure that the last cylinder group has enough blocks 33898542Smckusick * to be viable. If it is too small, reduce the number of blocks 33998542Smckusick * per cylinder group which will have the effect of moving more 34098542Smckusick * blocks into the last cylinder group. 3411558Srgrimes */ 34298542Smckusick optimalfpg = sblock.fs_fpg; 34398542Smckusick for (;;) { 34498542Smckusick sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg); 34598542Smckusick lastminfpg = roundup(sblock.fs_iblkno + 34698542Smckusick sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag); 34798542Smckusick if (sblock.fs_size < lastminfpg) { 34899796Sbde printf("Filesystem size %jd < minimum size of %d\n", 34999796Sbde (intmax_t)sblock.fs_size, lastminfpg); 35098542Smckusick exit(28); 35198542Smckusick } 35298542Smckusick if (sblock.fs_size % sblock.fs_fpg >= lastminfpg || 35398542Smckusick sblock.fs_size % sblock.fs_fpg == 0) 35498542Smckusick break; 35598542Smckusick sblock.fs_fpg -= sblock.fs_frag; 35698542Smckusick sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), 35798542Smckusick INOPB(&sblock)); 3581558Srgrimes } 35998542Smckusick if (optimalfpg != sblock.fs_fpg) 36098542Smckusick printf("Reduced frags per cylinder group from %d to %d %s\n", 36198542Smckusick optimalfpg, sblock.fs_fpg, "to enlarge last cyl group"); 3621558Srgrimes sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock)); 3631558Srgrimes sblock.fs_dblkno = sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock); 36498542Smckusick if (Oflag == 1) { 36598542Smckusick sblock.fs_old_spc = sblock.fs_fpg * sblock.fs_old_nspf; 36698542Smckusick sblock.fs_old_nsect = sblock.fs_old_spc; 36798542Smckusick sblock.fs_old_npsect = sblock.fs_old_spc; 36898542Smckusick sblock.fs_old_ncyl = sblock.fs_ncg; 3691558Srgrimes } 3701558Srgrimes /* 3711558Srgrimes * fill in remaining fields of the super block 3721558Srgrimes */ 3731558Srgrimes sblock.fs_csaddr = cgdmin(&sblock, 0); 3741558Srgrimes sblock.fs_cssize = 3751558Srgrimes fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum)); 3761558Srgrimes fscs = (struct csum *)calloc(1, sblock.fs_cssize); 37737664Scharnier if (fscs == NULL) 37837664Scharnier errx(31, "calloc failed"); 37998542Smckusick sblock.fs_sbsize = fragroundup(&sblock, sizeof(struct fs)); 380105423Smckusick if (sblock.fs_sbsize > SBLOCKSIZE) 381105423Smckusick sblock.fs_sbsize = SBLOCKSIZE; 3821558Srgrimes sblock.fs_minfree = minfree; 3831558Srgrimes sblock.fs_maxbpg = maxbpg; 3841558Srgrimes sblock.fs_optim = opt; 3851558Srgrimes sblock.fs_cgrotor = 0; 38698542Smckusick sblock.fs_pendingblocks = 0; 38798542Smckusick sblock.fs_pendinginodes = 0; 3881558Srgrimes sblock.fs_fmod = 0; 3891558Srgrimes sblock.fs_ronly = 0; 39098542Smckusick sblock.fs_state = 0; 3912294Sdg sblock.fs_clean = 1; 39224149Sguido sblock.fs_id[0] = (long)utime; 39324215Sache sblock.fs_id[1] = random(); 39498542Smckusick sblock.fs_fsmnt[0] = '\0'; 39598542Smckusick csfrags = howmany(sblock.fs_cssize, sblock.fs_fsize); 39698542Smckusick sblock.fs_dsize = sblock.fs_size - sblock.fs_sblkno - 39798542Smckusick sblock.fs_ncg * (sblock.fs_dblkno - sblock.fs_sblkno); 39898542Smckusick sblock.fs_cstotal.cs_nbfree = 39998542Smckusick fragstoblks(&sblock, sblock.fs_dsize) - 40098542Smckusick howmany(csfrags, sblock.fs_frag); 40198542Smckusick sblock.fs_cstotal.cs_nffree = 40298542Smckusick fragnum(&sblock, sblock.fs_size) + 403107519Smckusick (fragnum(&sblock, csfrags) > 0 ? 404107519Smckusick sblock.fs_frag - fragnum(&sblock, csfrags) : 0); 40598542Smckusick sblock.fs_cstotal.cs_nifree = sblock.fs_ncg * sblock.fs_ipg - ROOTINO; 40698542Smckusick sblock.fs_cstotal.cs_ndir = 0; 40798542Smckusick sblock.fs_dsize -= csfrags; 40898542Smckusick sblock.fs_time = utime; 40998542Smckusick if (Oflag == 1) { 41098542Smckusick sblock.fs_old_time = utime; 41198542Smckusick sblock.fs_old_dsize = sblock.fs_dsize; 41298542Smckusick sblock.fs_old_csaddr = sblock.fs_csaddr; 41398542Smckusick sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir; 41498542Smckusick sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree; 41598542Smckusick sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree; 41698542Smckusick sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree; 41798542Smckusick } 41824149Sguido 4191558Srgrimes /* 420102231Strhodes * Dump out summary information about file system. 4211558Srgrimes */ 42298542Smckusick# define B2MBFACTOR (1 / (1024.0 * 1024.0)) 42399796Sbde printf("%s: %.1fMB (%jd sectors) block size %d, fragment size %d\n", 42498542Smckusick fsys, (float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR, 42599796Sbde (intmax_t)fsbtodb(&sblock, sblock.fs_size), sblock.fs_bsize, 42699796Sbde sblock.fs_fsize); 42798542Smckusick printf("\tusing %d cylinder groups of %.2fMB, %d blks, %d inodes.\n", 42898542Smckusick sblock.fs_ncg, (float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR, 42998542Smckusick sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg); 43098542Smckusick if (sblock.fs_flags & FS_DOSOFTDEP) 43198542Smckusick printf("\twith soft updates\n"); 43298542Smckusick# undef B2MBFACTOR 4331558Srgrimes /* 4341558Srgrimes * Now build the cylinders group blocks and 4351558Srgrimes * then print out indices of cylinder groups. 4361558Srgrimes */ 43777420Sphk printf("super-block backups (for fsck -b #) at:\n"); 43813769Sjoerg i = 0; 43913769Sjoerg width = charsperline(); 44098542Smckusick /* 441107412Smckusick * allocate space for superblock, cylinder group map, and 442107412Smckusick * two sets of inode blocks. 443107412Smckusick */ 444107412Smckusick if (sblock.fs_bsize < SBLOCKSIZE) 445107412Smckusick iobufsize = SBLOCKSIZE + 3 * sblock.fs_bsize; 446107412Smckusick else 447107412Smckusick iobufsize = 4 * sblock.fs_bsize; 448107412Smckusick if ((iobuf = malloc(iobufsize)) == 0) { 449107412Smckusick printf("Cannot allocate I/O buffer\n"); 450107412Smckusick exit(38); 451107412Smckusick } 452107412Smckusick bzero(iobuf, iobufsize); 453107412Smckusick /* 45498542Smckusick * Make a copy of the superblock into the buffer that we will be 45598542Smckusick * writing out in each cylinder group. 45698542Smckusick */ 45798542Smckusick bcopy((char *)&sblock, iobuf, SBLOCKSIZE); 4581558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) { 4591558Srgrimes initcg(cylno, utime); 46099796Sbde j = snprintf(tmpbuf, sizeof(tmpbuf), " %jd%s", 46199796Sbde (intmax_t)fsbtodb(&sblock, cgsblock(&sblock, cylno)), 46285860Sphk cylno < (sblock.fs_ncg-1) ? "," : ""); 46381980Sbrian if (j < 0) 46481980Sbrian tmpbuf[j = 0] = '\0'; 46537239Sbde if (i + j >= width) { 4661558Srgrimes printf("\n"); 46713769Sjoerg i = 0; 46813769Sjoerg } 46913769Sjoerg i += j; 47013769Sjoerg printf("%s", tmpbuf); 4718218Sdg fflush(stdout); 4721558Srgrimes } 47377420Sphk printf("\n"); 47477420Sphk if (Nflag) 4751558Srgrimes exit(0); 4761558Srgrimes /* 477102231Strhodes * Now construct the initial file system, 4781558Srgrimes * then write out the super-block. 4791558Srgrimes */ 4801558Srgrimes fsinit(utime); 48198542Smckusick if (Oflag == 1) { 48298542Smckusick sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir; 48398542Smckusick sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree; 48498542Smckusick sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree; 48598542Smckusick sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree; 48698542Smckusick } 487110671Sjmallett if (!Nflag) 488110671Sjmallett sbwrite(&disk, 0); 4891558Srgrimes for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize) 4901558Srgrimes wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)), 4911558Srgrimes sblock.fs_cssize - i < sblock.fs_bsize ? 49285860Sphk sblock.fs_cssize - i : sblock.fs_bsize, 4931558Srgrimes ((char *)fscs) + i); 4941558Srgrimes /* 4951558Srgrimes * Update information about this partion in pack 4961558Srgrimes * label, to that it may be updated on disk. 4971558Srgrimes */ 49895357Sphk if (pp != NULL) { 49995357Sphk pp->p_fstype = FS_BSDFFS; 50095357Sphk pp->p_fsize = sblock.fs_fsize; 50195357Sphk pp->p_frag = sblock.fs_frag; 50298542Smckusick pp->p_cpg = sblock.fs_fpg; 50395357Sphk } 5041558Srgrimes} 5051558Srgrimes 5061558Srgrimes/* 5071558Srgrimes * Initialize a cylinder group. 5081558Srgrimes */ 50937664Scharniervoid 51092711Siedowseinitcg(int cylno, time_t utime) 5111558Srgrimes{ 51298542Smckusick long i, j, d, dlower, dupper, blkno, start; 51398542Smckusick ufs2_daddr_t cbase, dmax; 51498542Smckusick struct ufs1_dinode *dp1; 51598542Smckusick struct ufs2_dinode *dp2; 51692483Sphk struct csum *cs; 5171558Srgrimes 5181558Srgrimes /* 5191558Srgrimes * Determine block bounds for cylinder group. 5201558Srgrimes * Allow space for super block summary information in first 5211558Srgrimes * cylinder group. 5221558Srgrimes */ 5231558Srgrimes cbase = cgbase(&sblock, cylno); 5241558Srgrimes dmax = cbase + sblock.fs_fpg; 5251558Srgrimes if (dmax > sblock.fs_size) 5261558Srgrimes dmax = sblock.fs_size; 5271558Srgrimes dlower = cgsblock(&sblock, cylno) - cbase; 5281558Srgrimes dupper = cgdmin(&sblock, cylno) - cbase; 5291558Srgrimes if (cylno == 0) 5301558Srgrimes dupper += howmany(sblock.fs_cssize, sblock.fs_fsize); 53198542Smckusick cs = &fscs[cylno]; 53223682Speter memset(&acg, 0, sblock.fs_cgsize); 5331558Srgrimes acg.cg_time = utime; 5341558Srgrimes acg.cg_magic = CG_MAGIC; 5351558Srgrimes acg.cg_cgx = cylno; 5361558Srgrimes acg.cg_niblk = sblock.fs_ipg; 53798542Smckusick acg.cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ? 53898542Smckusick sblock.fs_ipg : 2 * INOPB(&sblock); 5391558Srgrimes acg.cg_ndblk = dmax - cbase; 5401558Srgrimes if (sblock.fs_contigsumsize > 0) 5411558Srgrimes acg.cg_nclusterblks = acg.cg_ndblk / sblock.fs_frag; 54298542Smckusick start = &acg.cg_space[0] - (u_char *)(&acg.cg_firstfield); 54398542Smckusick if (Oflag == 2) { 54498542Smckusick acg.cg_iusedoff = start; 54598542Smckusick } else { 54698542Smckusick acg.cg_old_ncyl = sblock.fs_old_cpg; 54798542Smckusick acg.cg_old_time = acg.cg_time; 54898542Smckusick acg.cg_time = 0; 54998542Smckusick acg.cg_old_niblk = acg.cg_niblk; 55098542Smckusick acg.cg_niblk = 0; 55198542Smckusick acg.cg_initediblk = 0; 55298542Smckusick acg.cg_old_btotoff = start; 55398542Smckusick acg.cg_old_boff = acg.cg_old_btotoff + 55498542Smckusick sblock.fs_old_cpg * sizeof(int32_t); 55598542Smckusick acg.cg_iusedoff = acg.cg_old_boff + 55698542Smckusick sblock.fs_old_cpg * sizeof(u_int16_t); 55798542Smckusick } 558103949Smike acg.cg_freeoff = acg.cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT); 559103949Smike acg.cg_nextfreeoff = acg.cg_freeoff + howmany(sblock.fs_fpg, CHAR_BIT); 56098542Smckusick if (sblock.fs_contigsumsize > 0) { 5611558Srgrimes acg.cg_clustersumoff = 56298542Smckusick roundup(acg.cg_nextfreeoff, sizeof(u_int32_t)); 56398542Smckusick acg.cg_clustersumoff -= sizeof(u_int32_t); 5641558Srgrimes acg.cg_clusteroff = acg.cg_clustersumoff + 56538579Sdfr (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t); 56698542Smckusick acg.cg_nextfreeoff = acg.cg_clusteroff + 567103949Smike howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT); 5681558Srgrimes } 56998542Smckusick if (acg.cg_nextfreeoff > sblock.fs_cgsize) { 5701558Srgrimes printf("Panic: cylinder group too big\n"); 5711558Srgrimes exit(37); 5721558Srgrimes } 5731558Srgrimes acg.cg_cs.cs_nifree += sblock.fs_ipg; 5741558Srgrimes if (cylno == 0) 57598542Smckusick for (i = 0; i < (long)ROOTINO; i++) { 5761558Srgrimes setbit(cg_inosused(&acg), i); 5771558Srgrimes acg.cg_cs.cs_nifree--; 5781558Srgrimes } 5791558Srgrimes if (cylno > 0) { 5801558Srgrimes /* 5811558Srgrimes * In cylno 0, beginning space is reserved 5821558Srgrimes * for boot and super blocks. 5831558Srgrimes */ 5841558Srgrimes for (d = 0; d < dlower; d += sblock.fs_frag) { 5851558Srgrimes blkno = d / sblock.fs_frag; 5861558Srgrimes setblock(&sblock, cg_blksfree(&acg), blkno); 5871558Srgrimes if (sblock.fs_contigsumsize > 0) 5881558Srgrimes setbit(cg_clustersfree(&acg), blkno); 5891558Srgrimes acg.cg_cs.cs_nbfree++; 5901558Srgrimes } 5911558Srgrimes } 59237664Scharnier if ((i = dupper % sblock.fs_frag)) { 5931558Srgrimes acg.cg_frsum[sblock.fs_frag - i]++; 5941558Srgrimes for (d = dupper + sblock.fs_frag - i; dupper < d; dupper++) { 5951558Srgrimes setbit(cg_blksfree(&acg), dupper); 5961558Srgrimes acg.cg_cs.cs_nffree++; 5971558Srgrimes } 5981558Srgrimes } 59998542Smckusick for (d = dupper; d + sblock.fs_frag <= acg.cg_ndblk; 60098542Smckusick d += sblock.fs_frag) { 6011558Srgrimes blkno = d / sblock.fs_frag; 6021558Srgrimes setblock(&sblock, cg_blksfree(&acg), blkno); 6031558Srgrimes if (sblock.fs_contigsumsize > 0) 6041558Srgrimes setbit(cg_clustersfree(&acg), blkno); 6051558Srgrimes acg.cg_cs.cs_nbfree++; 6061558Srgrimes } 60798542Smckusick if (d < acg.cg_ndblk) { 60898542Smckusick acg.cg_frsum[acg.cg_ndblk - d]++; 60998542Smckusick for (; d < acg.cg_ndblk; d++) { 6101558Srgrimes setbit(cg_blksfree(&acg), d); 6111558Srgrimes acg.cg_cs.cs_nffree++; 6121558Srgrimes } 6131558Srgrimes } 6141558Srgrimes if (sblock.fs_contigsumsize > 0) { 61523682Speter int32_t *sump = cg_clustersum(&acg); 6161558Srgrimes u_char *mapp = cg_clustersfree(&acg); 6171558Srgrimes int map = *mapp++; 6181558Srgrimes int bit = 1; 6191558Srgrimes int run = 0; 6201558Srgrimes 6211558Srgrimes for (i = 0; i < acg.cg_nclusterblks; i++) { 62285860Sphk if ((map & bit) != 0) 6231558Srgrimes run++; 62485860Sphk else if (run != 0) { 6251558Srgrimes if (run > sblock.fs_contigsumsize) 6261558Srgrimes run = sblock.fs_contigsumsize; 6271558Srgrimes sump[run]++; 6281558Srgrimes run = 0; 6291558Srgrimes } 630103949Smike if ((i & (CHAR_BIT - 1)) != CHAR_BIT - 1) 6311558Srgrimes bit <<= 1; 63285860Sphk else { 6331558Srgrimes map = *mapp++; 6341558Srgrimes bit = 1; 6351558Srgrimes } 6361558Srgrimes } 6371558Srgrimes if (run != 0) { 6381558Srgrimes if (run > sblock.fs_contigsumsize) 6391558Srgrimes run = sblock.fs_contigsumsize; 6401558Srgrimes sump[run]++; 6411558Srgrimes } 6421558Srgrimes } 6431558Srgrimes *cs = acg.cg_cs; 64498542Smckusick /* 64598542Smckusick * Write out the duplicate super block, the cylinder group map 64698542Smckusick * and two blocks worth of inodes in a single write. 64798542Smckusick */ 64898542Smckusick start = sblock.fs_bsize > SBLOCKSIZE ? sblock.fs_bsize : SBLOCKSIZE; 64998542Smckusick bcopy((char *)&acg, &iobuf[start], sblock.fs_cgsize); 65098542Smckusick start += sblock.fs_bsize; 65198542Smckusick dp1 = (struct ufs1_dinode *)(&iobuf[start]); 65298542Smckusick dp2 = (struct ufs2_dinode *)(&iobuf[start]); 65398542Smckusick for (i = 0; i < acg.cg_initediblk; i++) { 65498542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 65598542Smckusick dp1->di_gen = random(); 65698542Smckusick dp1++; 65798542Smckusick } else { 65898542Smckusick dp2->di_gen = random(); 65998542Smckusick dp2++; 66098542Smckusick } 66198542Smckusick } 66298542Smckusick wtfs(fsbtodb(&sblock, cgsblock(&sblock, cylno)), iobufsize, iobuf); 66398542Smckusick /* 664102231Strhodes * For the old file system, we have to initialize all the inodes. 66598542Smckusick */ 66698542Smckusick if (Oflag == 1) { 66798542Smckusick for (i = 2 * sblock.fs_frag; 66898542Smckusick i < sblock.fs_ipg / INOPF(&sblock); 66998542Smckusick i += sblock.fs_frag) { 67098542Smckusick dp1 = (struct ufs1_dinode *)(&iobuf[start]); 67198542Smckusick for (j = 0; j < INOPB(&sblock); j++) { 67298542Smckusick dp1->di_gen = random(); 67398542Smckusick dp1++; 67498542Smckusick } 67598542Smckusick wtfs(fsbtodb(&sblock, cgimin(&sblock, cylno) + i), 67698542Smckusick sblock.fs_bsize, &iobuf[start]); 67798542Smckusick } 67898542Smckusick } 6791558Srgrimes} 6801558Srgrimes 6811558Srgrimes/* 682102231Strhodes * initialize the file system 6831558Srgrimes */ 6841558Srgrimes#define PREDEFDIR 2 6851558Srgrimes 6861558Srgrimesstruct direct root_dir[] = { 6871558Srgrimes { ROOTINO, sizeof(struct direct), DT_DIR, 1, "." }, 6881558Srgrimes { ROOTINO, sizeof(struct direct), DT_DIR, 2, ".." }, 6891558Srgrimes}; 6901558Srgrimes 69137664Scharniervoid 69292711Siedowsefsinit(time_t utime) 6931558Srgrimes{ 69498542Smckusick union dinode node; 6951558Srgrimes 69698542Smckusick memset(&node, 0, sizeof node); 69798542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 69898542Smckusick /* 69998542Smckusick * initialize the node 70098542Smckusick */ 70198542Smckusick node.dp1.di_atime = utime; 70298542Smckusick node.dp1.di_mtime = utime; 70398542Smckusick node.dp1.di_ctime = utime; 70498542Smckusick /* 70598542Smckusick * create the root directory 70698542Smckusick */ 70798542Smckusick node.dp1.di_mode = IFDIR | UMASK; 70898542Smckusick node.dp1.di_nlink = PREDEFDIR; 70998542Smckusick node.dp1.di_size = makedir(root_dir, PREDEFDIR); 71098542Smckusick node.dp1.di_db[0] = alloc(sblock.fs_fsize, node.dp1.di_mode); 71198542Smckusick node.dp1.di_blocks = 71298542Smckusick btodb(fragroundup(&sblock, node.dp1.di_size)); 71398542Smckusick wtfs(fsbtodb(&sblock, node.dp1.di_db[0]), sblock.fs_fsize, 71498542Smckusick iobuf); 71598542Smckusick } else { 71698542Smckusick /* 71798542Smckusick * initialize the node 71898542Smckusick */ 71998542Smckusick node.dp2.di_atime = utime; 72098542Smckusick node.dp2.di_mtime = utime; 72198542Smckusick node.dp2.di_ctime = utime; 722100231Sroberto node.dp2.di_birthtime = utime; 72398542Smckusick /* 72498542Smckusick * create the root directory 72598542Smckusick */ 72698542Smckusick node.dp2.di_mode = IFDIR | UMASK; 72798542Smckusick node.dp2.di_nlink = PREDEFDIR; 72898542Smckusick node.dp2.di_size = makedir(root_dir, PREDEFDIR); 72998542Smckusick node.dp2.di_db[0] = alloc(sblock.fs_fsize, node.dp2.di_mode); 73098542Smckusick node.dp2.di_blocks = 73198542Smckusick btodb(fragroundup(&sblock, node.dp2.di_size)); 73298542Smckusick wtfs(fsbtodb(&sblock, node.dp2.di_db[0]), sblock.fs_fsize, 73398542Smckusick iobuf); 73498542Smckusick } 7351558Srgrimes iput(&node, ROOTINO); 7361558Srgrimes} 7371558Srgrimes 7381558Srgrimes/* 73998542Smckusick * construct a set of directory entries in "iobuf". 7401558Srgrimes * return size of directory. 7411558Srgrimes */ 74237664Scharnierint 74392711Siedowsemakedir(struct direct *protodir, int entries) 7441558Srgrimes{ 7451558Srgrimes char *cp; 7461558Srgrimes int i, spcleft; 7471558Srgrimes 7481558Srgrimes spcleft = DIRBLKSIZ; 74998542Smckusick memset(iobuf, 0, DIRBLKSIZ); 75098542Smckusick for (cp = iobuf, i = 0; i < entries - 1; i++) { 7511558Srgrimes protodir[i].d_reclen = DIRSIZ(0, &protodir[i]); 75223682Speter memmove(cp, &protodir[i], protodir[i].d_reclen); 7531558Srgrimes cp += protodir[i].d_reclen; 7541558Srgrimes spcleft -= protodir[i].d_reclen; 7551558Srgrimes } 7561558Srgrimes protodir[i].d_reclen = spcleft; 75723682Speter memmove(cp, &protodir[i], DIRSIZ(0, &protodir[i])); 7581558Srgrimes return (DIRBLKSIZ); 7591558Srgrimes} 7601558Srgrimes 7611558Srgrimes/* 7621558Srgrimes * allocate a block or frag 7631558Srgrimes */ 76498542Smckusickufs2_daddr_t 76592711Siedowsealloc(int size, int mode) 7661558Srgrimes{ 76798542Smckusick int i, d, blkno, frag; 7681558Srgrimes 769110671Sjmallett bread(&disk, fsbtodb(&sblock, cgtod(&sblock, 0)), (char *)&acg, 770110671Sjmallett sblock.fs_cgsize); 7711558Srgrimes if (acg.cg_magic != CG_MAGIC) { 7721558Srgrimes printf("cg 0: bad magic number\n"); 7731558Srgrimes return (0); 7741558Srgrimes } 7751558Srgrimes if (acg.cg_cs.cs_nbfree == 0) { 7761558Srgrimes printf("first cylinder group ran out of space\n"); 7771558Srgrimes return (0); 7781558Srgrimes } 7791558Srgrimes for (d = 0; d < acg.cg_ndblk; d += sblock.fs_frag) 7801558Srgrimes if (isblock(&sblock, cg_blksfree(&acg), d / sblock.fs_frag)) 7811558Srgrimes goto goth; 7821558Srgrimes printf("internal error: can't find block in cyl 0\n"); 7831558Srgrimes return (0); 7841558Srgrimesgoth: 7851558Srgrimes blkno = fragstoblks(&sblock, d); 7861558Srgrimes clrblock(&sblock, cg_blksfree(&acg), blkno); 78723682Speter if (sblock.fs_contigsumsize > 0) 78823682Speter clrbit(cg_clustersfree(&acg), blkno); 7891558Srgrimes acg.cg_cs.cs_nbfree--; 7901558Srgrimes sblock.fs_cstotal.cs_nbfree--; 7911558Srgrimes fscs[0].cs_nbfree--; 7921558Srgrimes if (mode & IFDIR) { 7931558Srgrimes acg.cg_cs.cs_ndir++; 7941558Srgrimes sblock.fs_cstotal.cs_ndir++; 7951558Srgrimes fscs[0].cs_ndir++; 7961558Srgrimes } 7971558Srgrimes if (size != sblock.fs_bsize) { 7981558Srgrimes frag = howmany(size, sblock.fs_fsize); 7991558Srgrimes fscs[0].cs_nffree += sblock.fs_frag - frag; 8001558Srgrimes sblock.fs_cstotal.cs_nffree += sblock.fs_frag - frag; 8011558Srgrimes acg.cg_cs.cs_nffree += sblock.fs_frag - frag; 8021558Srgrimes acg.cg_frsum[sblock.fs_frag - frag]++; 8031558Srgrimes for (i = frag; i < sblock.fs_frag; i++) 8041558Srgrimes setbit(cg_blksfree(&acg), d + i); 8051558Srgrimes } 806110671Sjmallett /* XXX cgwrite(&disk, 0)??? */ 8071558Srgrimes wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 8081558Srgrimes (char *)&acg); 80998542Smckusick return ((ufs2_daddr_t)d); 8101558Srgrimes} 8111558Srgrimes 8121558Srgrimes/* 8131558Srgrimes * Allocate an inode on the disk 8141558Srgrimes */ 81537664Scharniervoid 81698542Smckusickiput(union dinode *ip, ino_t ino) 8171558Srgrimes{ 81898542Smckusick ufs2_daddr_t d; 8191558Srgrimes int c; 8201558Srgrimes 8211558Srgrimes c = ino_to_cg(&sblock, ino); 822110671Sjmallett bread(&disk, fsbtodb(&sblock, cgtod(&sblock, 0)), (char *)&acg, 823110671Sjmallett sblock.fs_cgsize); 8241558Srgrimes if (acg.cg_magic != CG_MAGIC) { 8251558Srgrimes printf("cg 0: bad magic number\n"); 8261558Srgrimes exit(31); 8271558Srgrimes } 8281558Srgrimes acg.cg_cs.cs_nifree--; 8291558Srgrimes setbit(cg_inosused(&acg), ino); 8301558Srgrimes wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize, 8311558Srgrimes (char *)&acg); 8321558Srgrimes sblock.fs_cstotal.cs_nifree--; 8331558Srgrimes fscs[0].cs_nifree--; 83498542Smckusick if (ino >= (unsigned long)sblock.fs_ipg * sblock.fs_ncg) { 8351558Srgrimes printf("fsinit: inode value out of range (%d).\n", ino); 8361558Srgrimes exit(32); 8371558Srgrimes } 8381558Srgrimes d = fsbtodb(&sblock, ino_to_fsba(&sblock, ino)); 839110671Sjmallett bread(&disk, d, (char *)iobuf, sblock.fs_bsize); 84098542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 84198542Smckusick ((struct ufs1_dinode *)iobuf)[ino_to_fsbo(&sblock, ino)] = 84298542Smckusick ip->dp1; 84398542Smckusick else 84498542Smckusick ((struct ufs2_dinode *)iobuf)[ino_to_fsbo(&sblock, ino)] = 84598542Smckusick ip->dp2; 846110065Sjmallett wtfs(d, sblock.fs_bsize, (char *)iobuf); 8471558Srgrimes} 8481558Srgrimes 8491558Srgrimes/* 850110671Sjmallett * possibly write to disk 8511558Srgrimes */ 85293737Sphkstatic void 85398542Smckusickwtfs(ufs2_daddr_t bno, int size, char *bf) 8541558Srgrimes{ 8551558Srgrimes if (Nflag) 8561558Srgrimes return; 857110671Sjmallett bwrite(&disk, bno, bf, size); 8581558Srgrimes} 8591558Srgrimes 8601558Srgrimes/* 8611558Srgrimes * check if a block is available 8621558Srgrimes */ 86393737Sphkstatic int 86492711Siedowseisblock(struct fs *fs, unsigned char *cp, int h) 8651558Srgrimes{ 8661558Srgrimes unsigned char mask; 8671558Srgrimes 8681558Srgrimes switch (fs->fs_frag) { 8691558Srgrimes case 8: 8701558Srgrimes return (cp[h] == 0xff); 8711558Srgrimes case 4: 8721558Srgrimes mask = 0x0f << ((h & 0x1) << 2); 8731558Srgrimes return ((cp[h >> 1] & mask) == mask); 8741558Srgrimes case 2: 8751558Srgrimes mask = 0x03 << ((h & 0x3) << 1); 8761558Srgrimes return ((cp[h >> 2] & mask) == mask); 8771558Srgrimes case 1: 8781558Srgrimes mask = 0x01 << (h & 0x7); 8791558Srgrimes return ((cp[h >> 3] & mask) == mask); 8801558Srgrimes default: 8811558Srgrimes fprintf(stderr, "isblock bad fs_frag %d\n", fs->fs_frag); 8821558Srgrimes return (0); 8831558Srgrimes } 8841558Srgrimes} 8851558Srgrimes 8861558Srgrimes/* 8871558Srgrimes * take a block out of the map 8881558Srgrimes */ 88993737Sphkstatic void 89092711Siedowseclrblock(struct fs *fs, unsigned char *cp, int h) 8911558Srgrimes{ 8921558Srgrimes switch ((fs)->fs_frag) { 8931558Srgrimes case 8: 8941558Srgrimes cp[h] = 0; 8951558Srgrimes return; 8961558Srgrimes case 4: 8971558Srgrimes cp[h >> 1] &= ~(0x0f << ((h & 0x1) << 2)); 8981558Srgrimes return; 8991558Srgrimes case 2: 9001558Srgrimes cp[h >> 2] &= ~(0x03 << ((h & 0x3) << 1)); 9011558Srgrimes return; 9021558Srgrimes case 1: 9031558Srgrimes cp[h >> 3] &= ~(0x01 << (h & 0x7)); 9041558Srgrimes return; 9051558Srgrimes default: 9061558Srgrimes fprintf(stderr, "clrblock bad fs_frag %d\n", fs->fs_frag); 9071558Srgrimes return; 9081558Srgrimes } 9091558Srgrimes} 9101558Srgrimes 9111558Srgrimes/* 9121558Srgrimes * put a block into the map 9131558Srgrimes */ 91493737Sphkstatic void 91592711Siedowsesetblock(struct fs *fs, unsigned char *cp, int h) 9161558Srgrimes{ 9171558Srgrimes switch (fs->fs_frag) { 9181558Srgrimes case 8: 9191558Srgrimes cp[h] = 0xff; 9201558Srgrimes return; 9211558Srgrimes case 4: 9221558Srgrimes cp[h >> 1] |= (0x0f << ((h & 0x1) << 2)); 9231558Srgrimes return; 9241558Srgrimes case 2: 9251558Srgrimes cp[h >> 2] |= (0x03 << ((h & 0x3) << 1)); 9261558Srgrimes return; 9271558Srgrimes case 1: 9281558Srgrimes cp[h >> 3] |= (0x01 << (h & 0x7)); 9291558Srgrimes return; 9301558Srgrimes default: 9311558Srgrimes fprintf(stderr, "setblock bad fs_frag %d\n", fs->fs_frag); 9321558Srgrimes return; 9331558Srgrimes } 9341558Srgrimes} 93513637Sjoerg 93613637Sjoerg/* 93713769Sjoerg * Determine the number of characters in a 93813637Sjoerg * single line. 93913637Sjoerg */ 94013637Sjoerg 94113637Sjoergstatic int 94292717Sphkcharsperline(void) 94313637Sjoerg{ 94413769Sjoerg int columns; 94513637Sjoerg char *cp; 94613637Sjoerg struct winsize ws; 94713637Sjoerg 94813637Sjoerg columns = 0; 94913637Sjoerg if (ioctl(0, TIOCGWINSZ, &ws) != -1) 95013637Sjoerg columns = ws.ws_col; 95113637Sjoerg if (columns == 0 && (cp = getenv("COLUMNS"))) 95213637Sjoerg columns = atoi(cp); 95313637Sjoerg if (columns == 0) 95413637Sjoerg columns = 80; /* last resort */ 95585860Sphk return (columns); 95613637Sjoerg} 95792712Siedowse 95892712Siedowsestatic int 95992712Siedowseilog2(int val) 96092712Siedowse{ 96192763Sphk u_int n; 96292712Siedowse 963103949Smike for (n = 0; n < sizeof(n) * CHAR_BIT; n++) 96492712Siedowse if (1 << n == val) 96592712Siedowse return (n); 96692712Siedowse errx(1, "ilog2: %d is not a power of 2\n", val); 96792712Siedowse} 968