growfs.c revision 102231
169800Stomsoft/* 269800Stomsoft * Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz 369800Stomsoft * Copyright (c) 1980, 1989, 1993 The Regents of the University of California. 469800Stomsoft * All rights reserved. 569800Stomsoft * 669800Stomsoft * This code is derived from software contributed to Berkeley by 769800Stomsoft * Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt. 869800Stomsoft * 969800Stomsoft * Redistribution and use in source and binary forms, with or without 1069800Stomsoft * modification, are permitted provided that the following conditions 1169800Stomsoft * are met: 1269800Stomsoft * 1. Redistributions of source code must retain the above copyright 1369800Stomsoft * notice, this list of conditions and the following disclaimer. 1469800Stomsoft * 2. Redistributions in binary form must reproduce the above copyright 1569800Stomsoft * notice, this list of conditions and the following disclaimer in the 1669800Stomsoft * documentation and/or other materials provided with the distribution. 1769800Stomsoft * 3. All advertising materials mentioning features or use of this software 1869800Stomsoft * must display the following acknowledgment: 1969800Stomsoft * This product includes software developed by the University of 2069800Stomsoft * California, Berkeley and its contributors, as well as Christoph 2169800Stomsoft * Herrmann and Thomas-Henning von Kamptz. 2269800Stomsoft * 4. Neither the name of the University nor the names of its contributors 2369800Stomsoft * may be used to endorse or promote products derived from this software 2469800Stomsoft * without specific prior written permission. 2569800Stomsoft * 2669800Stomsoft * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2769800Stomsoft * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2869800Stomsoft * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2969800Stomsoft * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3069800Stomsoft * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3169800Stomsoft * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3269800Stomsoft * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3369800Stomsoft * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3469800Stomsoft * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3569800Stomsoft * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3669800Stomsoft * SUCH DAMAGE. 3769800Stomsoft * 3869926Stomsoft * $TSHeader: src/sbin/growfs/growfs.c,v 1.5 2000/12/12 19:31:00 tomsoft Exp $ 3969800Stomsoft * 4069800Stomsoft */ 4169800Stomsoft 4269800Stomsoft#ifndef lint 4369800Stomsoftstatic const char copyright[] = 4469800Stomsoft"@(#) Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz\n\ 4569800StomsoftCopyright (c) 1980, 1989, 1993 The Regents of the University of California.\n\ 4669800StomsoftAll rights reserved.\n"; 4769800Stomsoft#endif /* not lint */ 4869800Stomsoft 4969800Stomsoft#ifndef lint 5069800Stomsoftstatic const char rcsid[] = 5169926Stomsoft "$FreeBSD: head/sbin/growfs/growfs.c 102231 2002-08-21 18:11:48Z trhodes $"; 5269800Stomsoft#endif /* not lint */ 5369800Stomsoft 5469800Stomsoft/* ********************************************************** INCLUDES ***** */ 5569800Stomsoft#include <sys/param.h> 5669800Stomsoft#include <sys/disklabel.h> 5769800Stomsoft#include <sys/ioctl.h> 5869800Stomsoft#include <sys/stat.h> 5969800Stomsoft 6069800Stomsoft#include <stdio.h> 6169800Stomsoft#include <paths.h> 6269800Stomsoft#include <ctype.h> 6369800Stomsoft#include <err.h> 6469800Stomsoft#include <fcntl.h> 6569800Stomsoft#include <stdlib.h> 6669800Stomsoft#include <string.h> 6769800Stomsoft#include <unistd.h> 6869800Stomsoft#include <ufs/ufs/dinode.h> 6969800Stomsoft#include <ufs/ffs/fs.h> 7069800Stomsoft 7169800Stomsoft#include "debug.h" 7269800Stomsoft 7369800Stomsoft/* *************************************************** GLOBALS & TYPES ***** */ 7469800Stomsoft#ifdef FS_DEBUG 7569800Stomsoftint _dbg_lvl_ = (DL_INFO); /* DL_TRC */ 7669800Stomsoft#endif /* FS_DEBUG */ 7769800Stomsoft 7869800Stomsoftstatic union { 7969800Stomsoft struct fs fs; 8098542Smckusick char pad[SBLOCKSIZE]; 8169800Stomsoft} fsun1, fsun2; 8269800Stomsoft#define sblock fsun1.fs /* the new superblock */ 8369800Stomsoft#define osblock fsun2.fs /* the old superblock */ 8469800Stomsoft 8598542Smckusick/* 8698542Smckusick * Possible superblock locations ordered from most to least likely. 8798542Smckusick */ 8898542Smckusickstatic int sblock_try[] = SBLOCKSEARCH; 8998542Smckusickstatic ufs2_daddr_t sblockloc; 9098542Smckusick 9169800Stomsoftstatic union { 9269800Stomsoft struct cg cg; 9369800Stomsoft char pad[MAXBSIZE]; 9469800Stomsoft} cgun1, cgun2; 9569800Stomsoft#define acg cgun1.cg /* a cylinder cgroup (new) */ 9669800Stomsoft#define aocg cgun2.cg /* an old cylinder group */ 9769800Stomsoft 9898542Smckusickstatic char ablk[MAXBSIZE]; /* a block */ 9969800Stomsoft 10098542Smckusickstatic struct csum *fscs; /* cylinder summary */ 10169800Stomsoft 10298542Smckusickunion dinode { 10398542Smckusick struct ufs1_dinode dp1; 10498542Smckusick struct ufs2_dinode dp2; 10569800Stomsoft}; 10698542Smckusick#define DIP(dp, field) \ 10798542Smckusick ((sblock.fs_magic == FS_UFS1_MAGIC) ? \ 10898542Smckusick (dp)->dp1.field : (dp)->dp2.field) 10998542Smckusickstatic ufs2_daddr_t inoblk; /* inode block address */ 11098542Smckusickstatic char inobuf[MAXBSIZE]; /* inode block */ 11198542Smckusickstatic int maxino; /* last valid inode */ 11269800Stomsoft 11369800Stomsoft/* 11469800Stomsoft * An array of elements of type struct gfs_bpp describes all blocks to 11569800Stomsoft * be relocated in order to free the space needed for the cylinder group 11669800Stomsoft * summary for all cylinder groups located in the first cylinder group. 11769800Stomsoft */ 11869800Stomsoftstruct gfs_bpp { 11998542Smckusick ufs2_daddr_t old; /* old block number */ 12098542Smckusick ufs2_daddr_t new; /* new block number */ 12169800Stomsoft#define GFS_FL_FIRST 1 12269800Stomsoft#define GFS_FL_LAST 2 12377885Stomsoft unsigned int flags; /* special handling required */ 12469800Stomsoft int found; /* how many references were updated */ 12569800Stomsoft}; 12669800Stomsoft 12769800Stomsoft/* ******************************************************** PROTOTYPES ***** */ 12877885Stomsoftstatic void growfs(int, int, unsigned int); 12998542Smckusickstatic void rdfs(ufs2_daddr_t, size_t, void *, int); 13098542Smckusickstatic void wtfs(ufs2_daddr_t, size_t, void *, int, unsigned int); 13198542Smckusickstatic ufs2_daddr_t alloc(void); 13269800Stomsoftstatic int charsperline(void); 13369926Stomsoftstatic void usage(void); 13469800Stomsoftstatic int isblock(struct fs *, unsigned char *, int); 13569800Stomsoftstatic void clrblock(struct fs *, unsigned char *, int); 13669800Stomsoftstatic void setblock(struct fs *, unsigned char *, int); 13777885Stomsoftstatic void initcg(int, time_t, int, unsigned int); 13877885Stomsoftstatic void updjcg(int, time_t, int, int, unsigned int); 13977885Stomsoftstatic void updcsloc(time_t, int, int, unsigned int); 14069800Stomsoftstatic struct disklabel *get_disklabel(int); 14177885Stomsoftstatic void return_disklabel(int, struct disklabel *, unsigned int); 14298542Smckusickstatic union dinode *ginode(ino_t, int, int); 14398542Smckusickstatic void frag_adjust(ufs2_daddr_t, int); 14498542Smckusickstatic int cond_bl_upd(ufs2_daddr_t *, struct gfs_bpp *, int, int, 14598542Smckusick unsigned int); 14669800Stomsoftstatic void updclst(int); 14777885Stomsoftstatic void updrefs(int, ino_t, struct gfs_bpp *, int, int, unsigned int); 14898542Smckusickstatic void indirchk(ufs_lbn_t, ufs_lbn_t, ufs2_daddr_t, ufs_lbn_t, 14998542Smckusick struct gfs_bpp *, int, int, unsigned int); 15069800Stomsoft 15169800Stomsoft/* ************************************************************ growfs ***** */ 15269800Stomsoft/* 153102231Strhodes * Here we actually start growing the file system. We basically read the 15469926Stomsoft * cylinder summary from the first cylinder group as we want to update 15569800Stomsoft * this on the fly during our various operations. First we handle the 15669800Stomsoft * changes in the former last cylinder group. Afterwards we create all new 15769800Stomsoft * cylinder groups. Now we handle the cylinder group containing the 15869800Stomsoft * cylinder summary which might result in a relocation of the whole 15969800Stomsoft * structure. In the end we write back the updated cylinder summary, the 16069800Stomsoft * new superblock, and slightly patched versions of the super block 16169800Stomsoft * copies. 16269800Stomsoft */ 16369800Stomsoftstatic void 16477885Stomsoftgrowfs(int fsi, int fso, unsigned int Nflag) 16569800Stomsoft{ 16669800Stomsoft DBG_FUNC("growfs") 16777885Stomsoft int i; 16877885Stomsoft int cylno, j; 16969800Stomsoft time_t utime; 17069800Stomsoft int width; 17169800Stomsoft char tmpbuf[100]; 17269800Stomsoft#ifdef FSIRAND 17369800Stomsoft static int randinit=0; 17469800Stomsoft 17569800Stomsoft DBG_ENTER; 17669800Stomsoft 17769800Stomsoft if (!randinit) { 17869800Stomsoft randinit = 1; 17969800Stomsoft srandomdev(); 18069800Stomsoft } 18169800Stomsoft#else /* not FSIRAND */ 18269800Stomsoft 18369800Stomsoft DBG_ENTER; 18469800Stomsoft 18569800Stomsoft#endif /* FSIRAND */ 18669800Stomsoft time(&utime); 18769800Stomsoft 18869800Stomsoft /* 18969800Stomsoft * Get the cylinder summary into the memory. 19069800Stomsoft */ 19177885Stomsoft fscs = (struct csum *)calloc((size_t)1, (size_t)sblock.fs_cssize); 19269926Stomsoft if(fscs == NULL) { 19369926Stomsoft errx(1, "calloc failed"); 19469926Stomsoft } 19569800Stomsoft for (i = 0; i < osblock.fs_cssize; i += osblock.fs_bsize) { 19669800Stomsoft rdfs(fsbtodb(&osblock, osblock.fs_csaddr + 19777885Stomsoft numfrags(&osblock, i)), (size_t)MIN(osblock.fs_cssize - i, 19877885Stomsoft osblock.fs_bsize), (void *)(((char *)fscs)+i), fsi); 19969800Stomsoft } 20069800Stomsoft 20169800Stomsoft#ifdef FS_DEBUG 20269800Stomsoft{ 20369800Stomsoft struct csum *dbg_csp; 20469800Stomsoft int dbg_csc; 20569800Stomsoft char dbg_line[80]; 20669800Stomsoft 20769800Stomsoft dbg_csp=fscs; 20869800Stomsoft for(dbg_csc=0; dbg_csc<osblock.fs_ncg; dbg_csc++) { 20977885Stomsoft snprintf(dbg_line, sizeof(dbg_line), 21077885Stomsoft "%d. old csum in old location", dbg_csc); 21169926Stomsoft DBG_DUMP_CSUM(&osblock, 21269926Stomsoft dbg_line, 21369926Stomsoft dbg_csp++); 21469800Stomsoft } 21569800Stomsoft} 21669800Stomsoft#endif /* FS_DEBUG */ 21769800Stomsoft DBG_PRINT0("fscs read\n"); 21869800Stomsoft 21969800Stomsoft /* 22069800Stomsoft * Do all needed changes in the former last cylinder group. 22169800Stomsoft */ 22269800Stomsoft updjcg(osblock.fs_ncg-1, utime, fsi, fso, Nflag); 22369800Stomsoft 22469800Stomsoft /* 225102231Strhodes * Dump out summary information about file system. 22669800Stomsoft */ 22798542Smckusick# define B2MBFACTOR (1 / (1024.0 * 1024.0)) 22898542Smckusick printf("growfs: %.1fMB (%qd sectors) block size %d, fragment size %d\n", 22969800Stomsoft (float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR, 23098542Smckusick fsbtodb(&sblock, sblock.fs_size), sblock.fs_bsize, sblock.fs_fsize); 23198542Smckusick printf("\tusing %d cylinder groups of %.2fMB, %d blks, %d inodes.\n", 23298542Smckusick sblock.fs_ncg, (float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR, 23398542Smckusick sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg); 23498542Smckusick if (sblock.fs_flags & FS_DOSOFTDEP) 23598542Smckusick printf("\twith soft updates\n"); 23698542Smckusick# undef B2MBFACTOR 23769800Stomsoft 23869800Stomsoft /* 23969800Stomsoft * Now build the cylinders group blocks and 24069800Stomsoft * then print out indices of cylinder groups. 24169800Stomsoft */ 24269800Stomsoft printf("super-block backups (for fsck -b #) at:\n"); 24369800Stomsoft i = 0; 24469800Stomsoft width = charsperline(); 24569800Stomsoft 24669800Stomsoft /* 24769800Stomsoft * Iterate for only the new cylinder groups. 24869800Stomsoft */ 24969800Stomsoft for (cylno = osblock.fs_ncg; cylno < sblock.fs_ncg; cylno++) { 25069800Stomsoft initcg(cylno, utime, fso, Nflag); 25177885Stomsoft j = sprintf(tmpbuf, " %d%s", 25277885Stomsoft (int)fsbtodb(&sblock, cgsblock(&sblock, cylno)), 25369800Stomsoft cylno < (sblock.fs_ncg-1) ? "," : "" ); 25469800Stomsoft if (i + j >= width) { 25569800Stomsoft printf("\n"); 25669800Stomsoft i = 0; 25769800Stomsoft } 25869800Stomsoft i += j; 25969800Stomsoft printf("%s", tmpbuf); 26069800Stomsoft fflush(stdout); 26169800Stomsoft } 26269800Stomsoft printf("\n"); 26369800Stomsoft 26469800Stomsoft /* 26569800Stomsoft * Do all needed changes in the first cylinder group. 26669800Stomsoft * allocate blocks in new location 26769800Stomsoft */ 26869800Stomsoft updcsloc(utime, fsi, fso, Nflag); 26969800Stomsoft 27069800Stomsoft /* 27169800Stomsoft * Now write the cylinder summary back to disk. 27269800Stomsoft */ 27369800Stomsoft for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize) { 27469800Stomsoft wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)), 27577885Stomsoft (size_t)MIN(sblock.fs_cssize - i, sblock.fs_bsize), 27677885Stomsoft (void *)(((char *)fscs) + i), fso, Nflag); 27769800Stomsoft } 27869800Stomsoft DBG_PRINT0("fscs written\n"); 27969800Stomsoft 28069800Stomsoft#ifdef FS_DEBUG 28169800Stomsoft{ 28269800Stomsoft struct csum *dbg_csp; 28369800Stomsoft int dbg_csc; 28469800Stomsoft char dbg_line[80]; 28569800Stomsoft 28669800Stomsoft dbg_csp=fscs; 28769800Stomsoft for(dbg_csc=0; dbg_csc<sblock.fs_ncg; dbg_csc++) { 28877885Stomsoft snprintf(dbg_line, sizeof(dbg_line), 28977885Stomsoft "%d. new csum in new location", dbg_csc); 29069926Stomsoft DBG_DUMP_CSUM(&sblock, 29169926Stomsoft dbg_line, 29269926Stomsoft dbg_csp++); 29369800Stomsoft } 29469800Stomsoft} 29569800Stomsoft#endif /* FS_DEBUG */ 29669800Stomsoft 29769800Stomsoft /* 29869800Stomsoft * Now write the new superblock back to disk. 29969800Stomsoft */ 30069800Stomsoft sblock.fs_time = utime; 30198542Smckusick wtfs(sblockloc, (size_t)SBLOCKSIZE, (void *)&sblock, fso, Nflag); 30269800Stomsoft DBG_PRINT0("sblock written\n"); 30369926Stomsoft DBG_DUMP_FS(&sblock, 30469926Stomsoft "new initial sblock"); 30569800Stomsoft 30669800Stomsoft /* 30769800Stomsoft * Clean up the dynamic fields in our superblock copies. 30869800Stomsoft */ 30969800Stomsoft sblock.fs_fmod = 0; 31069800Stomsoft sblock.fs_clean = 1; 31169800Stomsoft sblock.fs_ronly = 0; 31269800Stomsoft sblock.fs_cgrotor = 0; 31369800Stomsoft sblock.fs_state = 0; 31469800Stomsoft memset((void *)&sblock.fs_fsmnt, 0, sizeof(sblock.fs_fsmnt)); 31569800Stomsoft sblock.fs_flags &= FS_DOSOFTDEP; 31669800Stomsoft 31769800Stomsoft /* 31869800Stomsoft * XXX 31969800Stomsoft * The following fields are currently distributed from the superblock 32069800Stomsoft * to the copies: 32169800Stomsoft * fs_minfree 32269800Stomsoft * fs_rotdelay 32369800Stomsoft * fs_maxcontig 32469800Stomsoft * fs_maxbpg 32569800Stomsoft * fs_minfree, 32669800Stomsoft * fs_optim 32769800Stomsoft * fs_flags regarding SOFTPDATES 32869800Stomsoft * 32969800Stomsoft * We probably should rather change the summary for the cylinder group 33069800Stomsoft * statistics here to the value of what would be in there, if the file 33169800Stomsoft * system were created initially with the new size. Therefor we still 33269800Stomsoft * need to find an easy way of calculating that. 33369800Stomsoft * Possibly we can try to read the first superblock copy and apply the 33469800Stomsoft * "diffed" stats between the old and new superblock by still copying 33569800Stomsoft * certain parameters onto that. 33669800Stomsoft */ 33769800Stomsoft 33869800Stomsoft /* 33969800Stomsoft * Write out the duplicate super blocks. 34069800Stomsoft */ 34169800Stomsoft for (cylno = 0; cylno < sblock.fs_ncg; cylno++) { 34269800Stomsoft wtfs(fsbtodb(&sblock, cgsblock(&sblock, cylno)), 34398542Smckusick (size_t)SBLOCKSIZE, (void *)&sblock, fso, Nflag); 34469800Stomsoft } 34569800Stomsoft DBG_PRINT0("sblock copies written\n"); 34669926Stomsoft DBG_DUMP_FS(&sblock, 34769926Stomsoft "new other sblocks"); 34869800Stomsoft 34969800Stomsoft DBG_LEAVE; 35069800Stomsoft return; 35169800Stomsoft} 35269800Stomsoft 35369800Stomsoft/* ************************************************************ initcg ***** */ 35469800Stomsoft/* 35569800Stomsoft * This creates a new cylinder group structure, for more details please see 35669800Stomsoft * the source of newfs(8), as this function is taken over almost unchanged. 35769800Stomsoft * As this is never called for the first cylinder group, the special 35869800Stomsoft * provisions for that case are removed here. 35969800Stomsoft */ 36069800Stomsoftstatic void 36177885Stomsoftinitcg(int cylno, time_t utime, int fso, unsigned int Nflag) 36269800Stomsoft{ 36369800Stomsoft DBG_FUNC("initcg") 36498542Smckusick static caddr_t iobuf; 36598542Smckusick long i, j, d, dlower, dupper, blkno, start; 36698542Smckusick ufs2_daddr_t cbase, dmax; 36798542Smckusick struct ufs1_dinode *dp1; 36898542Smckusick struct ufs2_dinode *dp2; 36992806Sobrien struct csum *cs; 37069800Stomsoft 37198542Smckusick if (iobuf == NULL && (iobuf = malloc(sblock.fs_bsize)) == NULL) { 37298542Smckusick errx(37, "panic: cannot allocate I/O buffer"); 37398542Smckusick } 37469800Stomsoft /* 37569800Stomsoft * Determine block bounds for cylinder group. 37698542Smckusick * Allow space for super block summary information in first 37798542Smckusick * cylinder group. 37869800Stomsoft */ 37969800Stomsoft cbase = cgbase(&sblock, cylno); 38069800Stomsoft dmax = cbase + sblock.fs_fpg; 38198542Smckusick if (dmax > sblock.fs_size) 38269800Stomsoft dmax = sblock.fs_size; 38369800Stomsoft dlower = cgsblock(&sblock, cylno) - cbase; 38469800Stomsoft dupper = cgdmin(&sblock, cylno) - cbase; 38598542Smckusick if (cylno == 0) /* XXX fscs may be relocated */ 38669800Stomsoft dupper += howmany(sblock.fs_cssize, sblock.fs_fsize); 38798542Smckusick cs = &fscs[cylno]; 38898542Smckusick memset(&acg, 0, sblock.fs_cgsize); 38969800Stomsoft acg.cg_time = utime; 39069800Stomsoft acg.cg_magic = CG_MAGIC; 39169800Stomsoft acg.cg_cgx = cylno; 39269800Stomsoft acg.cg_niblk = sblock.fs_ipg; 39398542Smckusick acg.cg_initediblk = sblock.fs_ipg; 39469800Stomsoft acg.cg_ndblk = dmax - cbase; 39598542Smckusick if (sblock.fs_contigsumsize > 0) 39669800Stomsoft acg.cg_nclusterblks = acg.cg_ndblk / sblock.fs_frag; 39798542Smckusick start = &acg.cg_space[0] - (u_char *)(&acg.cg_firstfield); 39898542Smckusick if (sblock.fs_magic == FS_UFS2_MAGIC) { 39998542Smckusick acg.cg_iusedoff = start; 40098542Smckusick } else { 40198542Smckusick acg.cg_old_ncyl = sblock.fs_old_cpg; 40298542Smckusick acg.cg_old_time = acg.cg_time; 40398542Smckusick acg.cg_time = 0; 40498542Smckusick acg.cg_old_niblk = acg.cg_niblk; 40598542Smckusick acg.cg_niblk = 0; 40698542Smckusick acg.cg_initediblk = 0; 40798542Smckusick acg.cg_old_btotoff = start; 40898542Smckusick acg.cg_old_boff = acg.cg_old_btotoff + 40998542Smckusick sblock.fs_old_cpg * sizeof(int32_t); 41098542Smckusick acg.cg_iusedoff = acg.cg_old_boff + 41198542Smckusick sblock.fs_old_cpg * sizeof(u_int16_t); 41269800Stomsoft } 41369800Stomsoft acg.cg_freeoff = acg.cg_iusedoff + howmany(sblock.fs_ipg, NBBY); 41498542Smckusick acg.cg_nextfreeoff = acg.cg_freeoff + howmany(sblock.fs_fpg, NBBY); 41598542Smckusick if (sblock.fs_contigsumsize > 0) { 41669800Stomsoft acg.cg_clustersumoff = 41798542Smckusick roundup(acg.cg_nextfreeoff, sizeof(u_int32_t)); 41898542Smckusick acg.cg_clustersumoff -= sizeof(u_int32_t); 41969800Stomsoft acg.cg_clusteroff = acg.cg_clustersumoff + 42069800Stomsoft (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t); 42198542Smckusick acg.cg_nextfreeoff = acg.cg_clusteroff + 42298542Smckusick howmany(fragstoblks(&sblock, sblock.fs_fpg), NBBY); 42369800Stomsoft } 42498542Smckusick if (acg.cg_nextfreeoff > sblock.fs_cgsize) { 42569800Stomsoft /* 42698542Smckusick * This should never happen as we would have had that panic 427102231Strhodes * already on file system creation 42869800Stomsoft */ 42969926Stomsoft errx(37, "panic: cylinder group too big"); 43069800Stomsoft } 43169800Stomsoft acg.cg_cs.cs_nifree += sblock.fs_ipg; 43269800Stomsoft if (cylno == 0) 43398542Smckusick for (i = 0; i < ROOTINO; i++) { 43469800Stomsoft setbit(cg_inosused(&acg), i); 43569800Stomsoft acg.cg_cs.cs_nifree--; 43669800Stomsoft } 43798542Smckusick bzero(iobuf, sblock.fs_bsize); 43869800Stomsoft for (i = 0; i < sblock.fs_ipg / INOPF(&sblock); i += sblock.fs_frag) { 43998542Smckusick dp1 = (struct ufs1_dinode *)iobuf; 44098542Smckusick dp2 = (struct ufs2_dinode *)iobuf; 44169800Stomsoft#ifdef FSIRAND 44298542Smckusick for (j = 0; j < INOPB(&sblock); j++) 44398542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 44498542Smckusick dp1->di_gen = random(); 44598542Smckusick dp1++; 44698542Smckusick } else { 44798542Smckusick dp2->di_gen = random(); 44898542Smckusick dp2++; 44998542Smckusick } 45069800Stomsoft#endif 45169800Stomsoft wtfs(fsbtodb(&sblock, cgimin(&sblock, cylno) + i), 45298542Smckusick sblock.fs_bsize, iobuf, fso, Nflag); 45369800Stomsoft } 45498542Smckusick if (cylno > 0) { 45598542Smckusick /* 45698542Smckusick * In cylno 0, beginning space is reserved 45798542Smckusick * for boot and super blocks. 45898542Smckusick */ 45998542Smckusick for (d = 0; d < dlower; d += sblock.fs_frag) { 46098542Smckusick blkno = d / sblock.fs_frag; 46198542Smckusick setblock(&sblock, cg_blksfree(&acg), blkno); 46298542Smckusick if (sblock.fs_contigsumsize > 0) 46398542Smckusick setbit(cg_clustersfree(&acg), blkno); 46498542Smckusick acg.cg_cs.cs_nbfree++; 46569800Stomsoft } 46698542Smckusick sblock.fs_dsize += dlower; 46769800Stomsoft } 46869800Stomsoft sblock.fs_dsize += acg.cg_ndblk - dupper; 46969800Stomsoft if ((i = dupper % sblock.fs_frag)) { 47069800Stomsoft acg.cg_frsum[sblock.fs_frag - i]++; 47169800Stomsoft for (d = dupper + sblock.fs_frag - i; dupper < d; dupper++) { 47269800Stomsoft setbit(cg_blksfree(&acg), dupper); 47369800Stomsoft acg.cg_cs.cs_nffree++; 47469800Stomsoft } 47569800Stomsoft } 47698542Smckusick for (d = dupper; d + sblock.fs_frag <= acg.cg_ndblk; 47798542Smckusick d += sblock.fs_frag) { 47869800Stomsoft blkno = d / sblock.fs_frag; 47969800Stomsoft setblock(&sblock, cg_blksfree(&acg), blkno); 48098542Smckusick if (sblock.fs_contigsumsize > 0) 48169800Stomsoft setbit(cg_clustersfree(&acg), blkno); 48269800Stomsoft acg.cg_cs.cs_nbfree++; 48369800Stomsoft } 48498542Smckusick if (d < acg.cg_ndblk) { 48598542Smckusick acg.cg_frsum[acg.cg_ndblk - d]++; 48698542Smckusick for (; d < acg.cg_ndblk; d++) { 48769800Stomsoft setbit(cg_blksfree(&acg), d); 48869800Stomsoft acg.cg_cs.cs_nffree++; 48969800Stomsoft } 49069800Stomsoft } 49169800Stomsoft if (sblock.fs_contigsumsize > 0) { 49298542Smckusick int32_t *sump = cg_clustersum(&acg); 49398542Smckusick u_char *mapp = cg_clustersfree(&acg); 49498542Smckusick int map = *mapp++; 49598542Smckusick int bit = 1; 49698542Smckusick int run = 0; 49769800Stomsoft 49869800Stomsoft for (i = 0; i < acg.cg_nclusterblks; i++) { 49998542Smckusick if ((map & bit) != 0) 50069800Stomsoft run++; 50198542Smckusick else if (run != 0) { 50298542Smckusick if (run > sblock.fs_contigsumsize) 50369800Stomsoft run = sblock.fs_contigsumsize; 50469800Stomsoft sump[run]++; 50569800Stomsoft run = 0; 50669800Stomsoft } 50798542Smckusick if ((i & (NBBY - 1)) != NBBY - 1) 50869800Stomsoft bit <<= 1; 50998542Smckusick else { 51069800Stomsoft map = *mapp++; 51169800Stomsoft bit = 1; 51269800Stomsoft } 51369800Stomsoft } 51469800Stomsoft if (run != 0) { 51598542Smckusick if (run > sblock.fs_contigsumsize) 51669800Stomsoft run = sblock.fs_contigsumsize; 51769800Stomsoft sump[run]++; 51869800Stomsoft } 51969800Stomsoft } 52069800Stomsoft sblock.fs_cstotal.cs_ndir += acg.cg_cs.cs_ndir; 52169800Stomsoft sblock.fs_cstotal.cs_nffree += acg.cg_cs.cs_nffree; 52269800Stomsoft sblock.fs_cstotal.cs_nbfree += acg.cg_cs.cs_nbfree; 52369800Stomsoft sblock.fs_cstotal.cs_nifree += acg.cg_cs.cs_nifree; 52469800Stomsoft *cs = acg.cg_cs; 52569800Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, cylno)), 52698542Smckusick sblock.fs_bsize, (char *)&acg, fso, Nflag); 52769926Stomsoft DBG_DUMP_CG(&sblock, 52869926Stomsoft "new cg", 52969926Stomsoft &acg); 53069800Stomsoft 53169800Stomsoft DBG_LEAVE; 53269800Stomsoft return; 53369800Stomsoft} 53469800Stomsoft 53569800Stomsoft/* ******************************************************* frag_adjust ***** */ 53669800Stomsoft/* 53769800Stomsoft * Here we add or subtract (sign +1/-1) the available fragments in a given 53869800Stomsoft * block to or from the fragment statistics. By subtracting before and adding 53969800Stomsoft * after an operation on the free frag map we can easy update the fragment 54069800Stomsoft * statistic, which seems to be otherwise an rather complex operation. 54169800Stomsoft */ 54269800Stomsoftstatic void 54398542Smckusickfrag_adjust(ufs2_daddr_t frag, int sign) 54469800Stomsoft{ 54569800Stomsoft DBG_FUNC("frag_adjust") 54669800Stomsoft int fragsize; 54769800Stomsoft int f; 54869800Stomsoft 54969800Stomsoft DBG_ENTER; 55069800Stomsoft 55169800Stomsoft fragsize=0; 55269800Stomsoft /* 55369800Stomsoft * Here frag only needs to point to any fragment in the block we want 55469800Stomsoft * to examine. 55569800Stomsoft */ 55669800Stomsoft for(f=rounddown(frag, sblock.fs_frag); 55769800Stomsoft f<roundup(frag+1, sblock.fs_frag); 55869800Stomsoft f++) { 55969800Stomsoft /* 56069800Stomsoft * Count contiguos free fragments. 56169800Stomsoft */ 56269800Stomsoft if(isset(cg_blksfree(&acg), f)) { 56369800Stomsoft fragsize++; 56469800Stomsoft } else { 56569800Stomsoft if(fragsize && fragsize<sblock.fs_frag) { 56669800Stomsoft /* 56769800Stomsoft * We found something in between. 56869800Stomsoft */ 56969800Stomsoft acg.cg_frsum[fragsize]+=sign; 57069926Stomsoft DBG_PRINT2("frag_adjust [%d]+=%d\n", 57169926Stomsoft fragsize, 57269926Stomsoft sign); 57369800Stomsoft } 57469800Stomsoft fragsize=0; 57569800Stomsoft } 57669800Stomsoft } 57769800Stomsoft if(fragsize && fragsize<sblock.fs_frag) { 57869800Stomsoft /* 57969800Stomsoft * We found something. 58069800Stomsoft */ 58169800Stomsoft acg.cg_frsum[fragsize]+=sign; 58269926Stomsoft DBG_PRINT2("frag_adjust [%d]+=%d\n", 58369926Stomsoft fragsize, 58469926Stomsoft sign); 58569800Stomsoft } 58669926Stomsoft DBG_PRINT2("frag_adjust [[%d]]+=%d\n", 58769926Stomsoft fragsize, 58869926Stomsoft sign); 58969800Stomsoft 59069800Stomsoft DBG_LEAVE; 59169800Stomsoft return; 59269800Stomsoft} 59369800Stomsoft 59469800Stomsoft/* ******************************************************* cond_bl_upd ***** */ 59569800Stomsoft/* 59669800Stomsoft * Here we conditionally update a pointer to a fragment. We check for all 59769800Stomsoft * relocated blocks if any of it's fragments is referenced by the current 59869800Stomsoft * field, and update the pointer to the respective fragment in our new 59969800Stomsoft * block. If we find a reference we write back the block immediately, 60069800Stomsoft * as there is no easy way for our general block reading engine to figure 60169800Stomsoft * out if a write back operation is needed. 60269800Stomsoft */ 60398542Smckusickstatic int 60498542Smckusickcond_bl_upd(ufs2_daddr_t *block, struct gfs_bpp *field, int fsi, int fso, 60598542Smckusick unsigned int Nflag) 60669800Stomsoft{ 60769800Stomsoft DBG_FUNC("cond_bl_upd") 60898542Smckusick struct gfs_bpp *f; 60998542Smckusick ufs2_daddr_t src, dst; 61098542Smckusick int fragnum; 61198542Smckusick void *ibuf; 61269800Stomsoft 61369800Stomsoft DBG_ENTER; 61469800Stomsoft 61598542Smckusick f = field; 61698542Smckusick for (f = field; f->old != 0; f++) { 61798542Smckusick src = *block; 61898542Smckusick if (fragstoblks(&sblock, src) != f->old) 61998542Smckusick continue; 62098542Smckusick /* 62198542Smckusick * The fragment is part of the block, so update. 62298542Smckusick */ 62398542Smckusick dst = blkstofrags(&sblock, f->new); 62498542Smckusick fragnum = fragnum(&sblock, src); 62598542Smckusick *block = dst + fragnum; 62698542Smckusick f->found++; 62798542Smckusick DBG_PRINT3("scg (%d->%d)[%d] reference updated\n", 62898542Smckusick f->old, 62998542Smckusick f->new, 63098542Smckusick fragnum); 63169800Stomsoft 63298542Smckusick /* 63398542Smckusick * Copy the block back immediately. 63498542Smckusick * 63598542Smckusick * XXX If src is is from an indirect block we have 63698542Smckusick * to implement copy on write here in case of 63798542Smckusick * active snapshots. 63898542Smckusick */ 63998542Smckusick ibuf = malloc(sblock.fs_bsize); 64098542Smckusick if (!ibuf) 64198542Smckusick errx(1, "malloc failed"); 64298542Smckusick src -= fragnum; 64398542Smckusick rdfs(fsbtodb(&sblock, src), (size_t)sblock.fs_bsize, ibuf, fsi); 64498542Smckusick wtfs(dst, (size_t)sblock.fs_bsize, ibuf, fso, Nflag); 64598542Smckusick free(ibuf); 64698542Smckusick /* 64798542Smckusick * The same block can't be found again in this loop. 64898542Smckusick */ 64998542Smckusick return (1); 65069800Stomsoft } 65169800Stomsoft 65269800Stomsoft DBG_LEAVE; 65398542Smckusick return (0); 65469800Stomsoft} 65569800Stomsoft 65669800Stomsoft/* ************************************************************ updjcg ***** */ 65769800Stomsoft/* 65869800Stomsoft * Here we do all needed work for the former last cylinder group. It has to be 659102231Strhodes * changed in any case, even if the file system ended exactly on the end of 66069800Stomsoft * this group, as there is some slightly inconsistent handling of the number 66169800Stomsoft * of cylinders in the cylinder group. We start again by reading the cylinder 66269800Stomsoft * group from disk. If the last block was not fully available, we first handle 66369800Stomsoft * the missing fragments, then we handle all new full blocks in that file 66469800Stomsoft * system and finally we handle the new last fragmented block in the file 66569800Stomsoft * system. We again have to handle the fragment statistics rotational layout 66669800Stomsoft * tables and cluster summary during all those operations. 66769800Stomsoft */ 66869800Stomsoftstatic void 66977885Stomsoftupdjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag) 67069800Stomsoft{ 67169800Stomsoft DBG_FUNC("updjcg") 67298542Smckusick ufs2_daddr_t cbase, dmax, dupper; 67369800Stomsoft struct csum *cs; 67469800Stomsoft int i,k; 67569800Stomsoft int j=0; 67669800Stomsoft 67769800Stomsoft DBG_ENTER; 67869800Stomsoft 67969800Stomsoft /* 68069800Stomsoft * Read the former last (joining) cylinder group from disk, and make 68169800Stomsoft * a copy. 68269800Stomsoft */ 68377885Stomsoft rdfs(fsbtodb(&osblock, cgtod(&osblock, cylno)), 68477885Stomsoft (size_t)osblock.fs_cgsize, (void *)&aocg, fsi); 68569800Stomsoft DBG_PRINT0("jcg read\n"); 68669926Stomsoft DBG_DUMP_CG(&sblock, 68769926Stomsoft "old joining cg", 68869926Stomsoft &aocg); 68969800Stomsoft 69069800Stomsoft memcpy((void *)&cgun1, (void *)&cgun2, sizeof(cgun2)); 69169800Stomsoft 69269800Stomsoft /* 69369800Stomsoft * If the cylinder group had already it's new final size almost 69469800Stomsoft * nothing is to be done ... except: 69569800Stomsoft * For some reason the value of cg_ncyl in the last cylinder group has 69669800Stomsoft * to be zero instead of fs_cpg. As this is now no longer the last 69769800Stomsoft * cylinder group we have to change that value now to fs_cpg. 69869800Stomsoft */ 69969800Stomsoft 70069800Stomsoft if(cgbase(&osblock, cylno+1) == osblock.fs_size) { 70198542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 70298542Smckusick acg.cg_old_ncyl=sblock.fs_old_cpg; 70369800Stomsoft 70477885Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, cylno)), 70577885Stomsoft (size_t)sblock.fs_cgsize, (void *)&acg, fso, Nflag); 70669800Stomsoft DBG_PRINT0("jcg written\n"); 70769926Stomsoft DBG_DUMP_CG(&sblock, 70869926Stomsoft "new joining cg", 70969926Stomsoft &acg); 71069800Stomsoft 71169800Stomsoft DBG_LEAVE; 71269800Stomsoft return; 71369800Stomsoft } 71469800Stomsoft 71569800Stomsoft /* 71669800Stomsoft * Set up some variables needed later. 71769800Stomsoft */ 71869800Stomsoft cbase = cgbase(&sblock, cylno); 71969800Stomsoft dmax = cbase + sblock.fs_fpg; 72069800Stomsoft if (dmax > sblock.fs_size) 72169800Stomsoft dmax = sblock.fs_size; 72269800Stomsoft dupper = cgdmin(&sblock, cylno) - cbase; 72377885Stomsoft if (cylno == 0) { /* XXX fscs may be relocated */ 72469800Stomsoft dupper += howmany(sblock.fs_cssize, sblock.fs_fsize); 72569800Stomsoft } 72669800Stomsoft 72769800Stomsoft /* 72869800Stomsoft * Set pointer to the cylinder summary for our cylinder group. 72969800Stomsoft */ 73069800Stomsoft cs = fscs + cylno; 73169800Stomsoft 73269800Stomsoft /* 73369800Stomsoft * Touch the cylinder group, update all fields in the cylinder group as 73469800Stomsoft * needed, update the free space in the superblock. 73569800Stomsoft */ 73669800Stomsoft acg.cg_time = utime; 73769800Stomsoft if (cylno == sblock.fs_ncg - 1) { 73869800Stomsoft /* 73969800Stomsoft * This is still the last cylinder group. 74069800Stomsoft */ 74198542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 74298542Smckusick acg.cg_old_ncyl = 74398542Smckusick sblock.fs_old_ncyl % sblock.fs_old_cpg; 74469800Stomsoft } else { 74598542Smckusick acg.cg_old_ncyl = sblock.fs_old_cpg; 74669800Stomsoft } 74798542Smckusick DBG_PRINT2("jcg dbg: %d %u", 74869926Stomsoft cylno, 74998542Smckusick sblock.fs_ncg); 75098542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 75198542Smckusick DBG_PRINT2("%d %u", 75298542Smckusick acg.cg_old_ncyl, 75398542Smckusick sblock.fs_old_cpg); 75498542Smckusick DBG_PRINT0("\n"); 75569800Stomsoft acg.cg_ndblk = dmax - cbase; 75669800Stomsoft sblock.fs_dsize += acg.cg_ndblk-aocg.cg_ndblk; 75769800Stomsoft if (sblock.fs_contigsumsize > 0) { 75869800Stomsoft acg.cg_nclusterblks = acg.cg_ndblk / sblock.fs_frag; 75969800Stomsoft } 76069800Stomsoft 76169800Stomsoft /* 76269800Stomsoft * Now we have to update the free fragment bitmap for our new free 76369800Stomsoft * space. There again we have to handle the fragmentation and also 76469800Stomsoft * the rotational layout tables and the cluster summary. This is 76569800Stomsoft * also done per fragment for the first new block if the old file 76669800Stomsoft * system end was not on a block boundary, per fragment for the new 767102231Strhodes * last block if the new file system end is not on a block boundary, 76869800Stomsoft * and per block for all space in between. 76969800Stomsoft * 77069800Stomsoft * Handle the first new block here if it was partially available 77169800Stomsoft * before. 77269800Stomsoft */ 77369800Stomsoft if(osblock.fs_size % sblock.fs_frag) { 77469800Stomsoft if(roundup(osblock.fs_size, sblock.fs_frag)<=sblock.fs_size) { 77569800Stomsoft /* 77669800Stomsoft * The new space is enough to fill at least this 77769800Stomsoft * block 77869800Stomsoft */ 77969800Stomsoft j=0; 78069800Stomsoft for(i=roundup(osblock.fs_size-cbase, sblock.fs_frag)-1; 78169800Stomsoft i>=osblock.fs_size-cbase; 78269800Stomsoft i--) { 78369800Stomsoft setbit(cg_blksfree(&acg), i); 78469800Stomsoft acg.cg_cs.cs_nffree++; 78569800Stomsoft j++; 78669800Stomsoft } 78769800Stomsoft 78869800Stomsoft /* 78969800Stomsoft * Check if the fragment just created could join an 79069800Stomsoft * already existing fragment at the former end of the 791102231Strhodes * file system. 79269800Stomsoft */ 79369800Stomsoft if(isblock(&sblock, cg_blksfree(&acg), 79469800Stomsoft ((osblock.fs_size - cgbase(&sblock, cylno))/ 79569800Stomsoft sblock.fs_frag))) { 79669800Stomsoft /* 79769800Stomsoft * The block is now completely available 79869800Stomsoft */ 79969800Stomsoft DBG_PRINT0("block was\n"); 80069800Stomsoft acg.cg_frsum[osblock.fs_size%sblock.fs_frag]--; 80169800Stomsoft acg.cg_cs.cs_nbfree++; 80269800Stomsoft acg.cg_cs.cs_nffree-=sblock.fs_frag; 80369800Stomsoft k=rounddown(osblock.fs_size-cbase, 80469800Stomsoft sblock.fs_frag); 80569800Stomsoft updclst((osblock.fs_size-cbase)/sblock.fs_frag); 80669800Stomsoft } else { 80769800Stomsoft /* 80869800Stomsoft * Lets rejoin a possible partially growed 80969800Stomsoft * fragment. 81069800Stomsoft */ 81169800Stomsoft k=0; 81269800Stomsoft while(isset(cg_blksfree(&acg), i) && 81369800Stomsoft (i>=rounddown(osblock.fs_size-cbase, 81469800Stomsoft sblock.fs_frag))) { 81569800Stomsoft i--; 81669800Stomsoft k++; 81769800Stomsoft } 81869800Stomsoft if(k) { 81969800Stomsoft acg.cg_frsum[k]--; 82069800Stomsoft } 82169800Stomsoft acg.cg_frsum[k+j]++; 82269800Stomsoft } 82369800Stomsoft } else { 82469800Stomsoft /* 82569800Stomsoft * We only grow by some fragments within this last 82669800Stomsoft * block. 82769800Stomsoft */ 82869800Stomsoft for(i=sblock.fs_size-cbase-1; 82969800Stomsoft i>=osblock.fs_size-cbase; 83069800Stomsoft i--) { 83169800Stomsoft setbit(cg_blksfree(&acg), i); 83269800Stomsoft acg.cg_cs.cs_nffree++; 83369800Stomsoft j++; 83469800Stomsoft } 83569800Stomsoft /* 83669800Stomsoft * Lets rejoin a possible partially growed fragment. 83769800Stomsoft */ 83869800Stomsoft k=0; 83969800Stomsoft while(isset(cg_blksfree(&acg), i) && 84069800Stomsoft (i>=rounddown(osblock.fs_size-cbase, 84169800Stomsoft sblock.fs_frag))) { 84269800Stomsoft i--; 84369800Stomsoft k++; 84469800Stomsoft } 84569800Stomsoft if(k) { 84669800Stomsoft acg.cg_frsum[k]--; 84769800Stomsoft } 84869800Stomsoft acg.cg_frsum[k+j]++; 84969800Stomsoft } 85069800Stomsoft } 85169800Stomsoft 85269800Stomsoft /* 85369800Stomsoft * Handle all new complete blocks here. 85469800Stomsoft */ 85569800Stomsoft for(i=roundup(osblock.fs_size-cbase, sblock.fs_frag); 85669800Stomsoft i+sblock.fs_frag<=dmax-cbase; /* XXX <= or only < ? */ 85769800Stomsoft i+=sblock.fs_frag) { 85869800Stomsoft j = i / sblock.fs_frag; 85969800Stomsoft setblock(&sblock, cg_blksfree(&acg), j); 86069800Stomsoft updclst(j); 86169800Stomsoft acg.cg_cs.cs_nbfree++; 86269800Stomsoft } 86369800Stomsoft 86469800Stomsoft /* 86569800Stomsoft * Handle the last new block if there are stll some new fragments left. 86669800Stomsoft * Here we don't have to bother about the cluster summary or the even 86769800Stomsoft * the rotational layout table. 86869800Stomsoft */ 86969800Stomsoft if (i < (dmax - cbase)) { 87069800Stomsoft acg.cg_frsum[dmax - cbase - i]++; 87169800Stomsoft for (; i < dmax - cbase; i++) { 87269800Stomsoft setbit(cg_blksfree(&acg), i); 87369800Stomsoft acg.cg_cs.cs_nffree++; 87469800Stomsoft } 87569800Stomsoft } 87669800Stomsoft 87769800Stomsoft sblock.fs_cstotal.cs_nffree += 87869800Stomsoft (acg.cg_cs.cs_nffree - aocg.cg_cs.cs_nffree); 87969800Stomsoft sblock.fs_cstotal.cs_nbfree += 88069800Stomsoft (acg.cg_cs.cs_nbfree - aocg.cg_cs.cs_nbfree); 88169800Stomsoft /* 88269800Stomsoft * The following statistics are not changed here: 88369800Stomsoft * sblock.fs_cstotal.cs_ndir 88469800Stomsoft * sblock.fs_cstotal.cs_nifree 88569800Stomsoft * As the statistics for this cylinder group are ready, copy it to 88669800Stomsoft * the summary information array. 88769800Stomsoft */ 88869800Stomsoft *cs = acg.cg_cs; 88969800Stomsoft 89069800Stomsoft /* 89169800Stomsoft * Write the updated "joining" cylinder group back to disk. 89269800Stomsoft */ 89377885Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, cylno)), (size_t)sblock.fs_cgsize, 89477885Stomsoft (void *)&acg, fso, Nflag); 89569800Stomsoft DBG_PRINT0("jcg written\n"); 89669926Stomsoft DBG_DUMP_CG(&sblock, 89769926Stomsoft "new joining cg", 89869926Stomsoft &acg); 89969800Stomsoft 90069800Stomsoft DBG_LEAVE; 90169800Stomsoft return; 90269800Stomsoft} 90369800Stomsoft 90469800Stomsoft/* ********************************************************** updcsloc ***** */ 90569800Stomsoft/* 90669800Stomsoft * Here we update the location of the cylinder summary. We have two possible 90769800Stomsoft * ways of growing the cylinder summary. 90869800Stomsoft * (1) We can try to grow the summary in the current location, and relocate 90969800Stomsoft * possibly used blocks within the current cylinder group. 91069800Stomsoft * (2) Alternatively we can relocate the whole cylinder summary to the first 91169800Stomsoft * new completely empty cylinder group. Once the cylinder summary is no 91269800Stomsoft * longer in the beginning of the first cylinder group you should never 91369800Stomsoft * use a version of fsck which is not aware of the possibility to have 91469800Stomsoft * this structure in a non standard place. 91569800Stomsoft * Option (1) is considered to be less intrusive to the structure of the file- 91669800Stomsoft * system. So we try to stick to that whenever possible. If there is not enough 91769800Stomsoft * space in the cylinder group containing the cylinder summary we have to use 918102231Strhodes * method (2). In case of active snapshots in the file system we probably can 91969800Stomsoft * completely avoid implementing copy on write if we stick to method (2) only. 92069800Stomsoft */ 92169800Stomsoftstatic void 92277885Stomsoftupdcsloc(time_t utime, int fsi, int fso, unsigned int Nflag) 92369800Stomsoft{ 92469800Stomsoft DBG_FUNC("updcsloc") 92569800Stomsoft struct csum *cs; 92669800Stomsoft int ocscg, ncscg; 92769800Stomsoft int blocks; 92898542Smckusick ufs2_daddr_t cbase, dupper, odupper, d, f, g; 92969800Stomsoft int ind; 93069800Stomsoft int cylno, inc; 93169800Stomsoft struct gfs_bpp *bp; 93269800Stomsoft int i, l; 93369800Stomsoft int lcs=0; 93469800Stomsoft int block; 93569800Stomsoft 93669800Stomsoft DBG_ENTER; 93769800Stomsoft 93869800Stomsoft if(howmany(sblock.fs_cssize, sblock.fs_fsize) == 93969800Stomsoft howmany(osblock.fs_cssize, osblock.fs_fsize)) { 94069800Stomsoft /* 94169800Stomsoft * No new fragment needed. 94269800Stomsoft */ 94369800Stomsoft DBG_LEAVE; 94469800Stomsoft return; 94569800Stomsoft } 94669800Stomsoft ocscg=dtog(&osblock, osblock.fs_csaddr); 94769800Stomsoft cs=fscs+ocscg; 94869800Stomsoft blocks = 1+howmany(sblock.fs_cssize, sblock.fs_bsize)- 94969800Stomsoft howmany(osblock.fs_cssize, osblock.fs_bsize); 95069800Stomsoft 95169800Stomsoft /* 95269800Stomsoft * Read original cylinder group from disk, and make a copy. 95381311Schm * XXX If Nflag is set in some very rare cases we now miss 95481311Schm * some changes done in updjcg by reading the unmodified 95581311Schm * block from disk. 95669800Stomsoft */ 95777885Stomsoft rdfs(fsbtodb(&osblock, cgtod(&osblock, ocscg)), 95877885Stomsoft (size_t)osblock.fs_cgsize, (void *)&aocg, fsi); 95969800Stomsoft DBG_PRINT0("oscg read\n"); 96069926Stomsoft DBG_DUMP_CG(&sblock, 96169926Stomsoft "old summary cg", 96269926Stomsoft &aocg); 96369800Stomsoft 96469800Stomsoft memcpy((void *)&cgun1, (void *)&cgun2, sizeof(cgun2)); 96569800Stomsoft 96669800Stomsoft /* 96769800Stomsoft * Touch the cylinder group, set up local variables needed later 96869800Stomsoft * and update the superblock. 96969800Stomsoft */ 97069800Stomsoft acg.cg_time = utime; 97169800Stomsoft 97269800Stomsoft /* 97369800Stomsoft * XXX In the case of having active snapshots we may need much more 97469800Stomsoft * blocks for the copy on write. We need each block twice, and 97569800Stomsoft * also up to 8*3 blocks for indirect blocks for all possible 97669800Stomsoft * references. 97769800Stomsoft */ 97869800Stomsoft if(/*((int)sblock.fs_time&0x3)>0||*/ cs->cs_nbfree < blocks) { 97969800Stomsoft /* 98069800Stomsoft * There is not enough space in the old cylinder group to 98169800Stomsoft * relocate all blocks as needed, so we relocate the whole 98269800Stomsoft * cylinder group summary to a new group. We try to use the 98369800Stomsoft * first complete new cylinder group just created. Within the 98469800Stomsoft * cylinder group we allign the area immediately after the 98569800Stomsoft * cylinder group information location in order to be as 98669800Stomsoft * close as possible to the original implementation of ffs. 98769800Stomsoft * 98869800Stomsoft * First we have to make sure we'll find enough space in the 98969800Stomsoft * new cylinder group. If not, then we currently give up. 99069800Stomsoft * We start with freeing everything which was used by the 99169800Stomsoft * fragments of the old cylinder summary in the current group. 99269800Stomsoft * Now we write back the group meta data, read in the needed 99369800Stomsoft * meta data from the new cylinder group, and start allocating 99469800Stomsoft * within that group. Here we can assume, the group to be 99569800Stomsoft * completely empty. Which makes the handling of fragments and 99669800Stomsoft * clusters a lot easier. 99769800Stomsoft */ 99869800Stomsoft DBG_TRC; 99969800Stomsoft if(sblock.fs_ncg-osblock.fs_ncg < 2) { 100069926Stomsoft errx(2, "panic: not enough space"); 100169800Stomsoft } 100269800Stomsoft 100369800Stomsoft /* 100469800Stomsoft * Point "d" to the first fragment not used by the cylinder 100569800Stomsoft * summary. 100669800Stomsoft */ 100769800Stomsoft d=osblock.fs_csaddr+(osblock.fs_cssize/osblock.fs_fsize); 100869800Stomsoft 100969800Stomsoft /* 101069800Stomsoft * Set up last cluster size ("lcs") already here. Calculate 101169800Stomsoft * the size for the trailing cluster just behind where "d" 101269800Stomsoft * points to. 101369800Stomsoft */ 101469800Stomsoft if(sblock.fs_contigsumsize > 0) { 101569800Stomsoft for(block=howmany(d%sblock.fs_fpg, sblock.fs_frag), 101669800Stomsoft lcs=0; lcs<sblock.fs_contigsumsize; 101769800Stomsoft block++, lcs++) { 101869800Stomsoft if(isclr(cg_clustersfree(&acg), block)){ 101969800Stomsoft break; 102069800Stomsoft } 102169800Stomsoft } 102269800Stomsoft } 102369800Stomsoft 102469800Stomsoft /* 102569800Stomsoft * Point "d" to the last frag used by the cylinder summary. 102669800Stomsoft */ 102769800Stomsoft d--; 102869800Stomsoft 102969926Stomsoft DBG_PRINT1("d=%d\n", 103069926Stomsoft d); 103169800Stomsoft if((d+1)%sblock.fs_frag) { 103269800Stomsoft /* 103369800Stomsoft * The end of the cylinder summary is not a complete 103469800Stomsoft * block. 103569800Stomsoft */ 103669800Stomsoft DBG_TRC; 103769800Stomsoft frag_adjust(d%sblock.fs_fpg, -1); 103869800Stomsoft for(; (d+1)%sblock.fs_frag; d--) { 103969926Stomsoft DBG_PRINT1("d=%d\n", 104069926Stomsoft d); 104169800Stomsoft setbit(cg_blksfree(&acg), d%sblock.fs_fpg); 104269800Stomsoft acg.cg_cs.cs_nffree++; 104369800Stomsoft sblock.fs_cstotal.cs_nffree++; 104469800Stomsoft } 104569800Stomsoft /* 104669800Stomsoft * Point "d" to the last fragment of the last 104769800Stomsoft * (incomplete) block of the clinder summary. 104869800Stomsoft */ 104969800Stomsoft d++; 105069800Stomsoft frag_adjust(d%sblock.fs_fpg, 1); 105169800Stomsoft 105269800Stomsoft if(isblock(&sblock, cg_blksfree(&acg), 105369800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag)) { 105469926Stomsoft DBG_PRINT1("d=%d\n", 105569926Stomsoft d); 105669800Stomsoft acg.cg_cs.cs_nffree-=sblock.fs_frag; 105769800Stomsoft acg.cg_cs.cs_nbfree++; 105869800Stomsoft sblock.fs_cstotal.cs_nffree-=sblock.fs_frag; 105969800Stomsoft sblock.fs_cstotal.cs_nbfree++; 106069800Stomsoft if(sblock.fs_contigsumsize > 0) { 106169800Stomsoft setbit(cg_clustersfree(&acg), 106269800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 106369800Stomsoft if(lcs < sblock.fs_contigsumsize) { 106469800Stomsoft if(lcs) { 106569800Stomsoft cg_clustersum(&acg) 106669800Stomsoft [lcs]--; 106769800Stomsoft } 106869800Stomsoft lcs++; 106969800Stomsoft cg_clustersum(&acg)[lcs]++; 107069800Stomsoft } 107169800Stomsoft } 107269800Stomsoft } 107369800Stomsoft /* 107469800Stomsoft * Point "d" to the first fragment of the block before 107569800Stomsoft * the last incomplete block. 107669800Stomsoft */ 107769800Stomsoft d--; 107869800Stomsoft } 107969800Stomsoft 108069926Stomsoft DBG_PRINT1("d=%d\n", 108169926Stomsoft d); 108269800Stomsoft for(d=rounddown(d, sblock.fs_frag); d >= osblock.fs_csaddr; 108369800Stomsoft d-=sblock.fs_frag) { 108469800Stomsoft DBG_TRC; 108569926Stomsoft DBG_PRINT1("d=%d\n", 108669926Stomsoft d); 108769800Stomsoft setblock(&sblock, cg_blksfree(&acg), 108869800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 108969800Stomsoft acg.cg_cs.cs_nbfree++; 109069800Stomsoft sblock.fs_cstotal.cs_nbfree++; 109169800Stomsoft if(sblock.fs_contigsumsize > 0) { 109269800Stomsoft setbit(cg_clustersfree(&acg), 109369800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 109469800Stomsoft /* 109569800Stomsoft * The last cluster size is already set up. 109669800Stomsoft */ 109769800Stomsoft if(lcs < sblock.fs_contigsumsize) { 109869800Stomsoft if(lcs) { 109969800Stomsoft cg_clustersum(&acg)[lcs]--; 110069800Stomsoft } 110169800Stomsoft lcs++; 110269800Stomsoft cg_clustersum(&acg)[lcs]++; 110369800Stomsoft } 110469800Stomsoft } 110569800Stomsoft } 110669800Stomsoft *cs = acg.cg_cs; 110769800Stomsoft 110869800Stomsoft /* 110969800Stomsoft * Now write the former cylinder group containing the cylinder 111069800Stomsoft * summary back to disk. 111169800Stomsoft */ 111277885Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, ocscg)), 111377885Stomsoft (size_t)sblock.fs_cgsize, (void *)&acg, fso, Nflag); 111469800Stomsoft DBG_PRINT0("oscg written\n"); 111569926Stomsoft DBG_DUMP_CG(&sblock, 111669926Stomsoft "old summary cg", 111769926Stomsoft &acg); 111869800Stomsoft 111969800Stomsoft /* 112069800Stomsoft * Find the beginning of the new cylinder group containing the 112169800Stomsoft * cylinder summary. 112269800Stomsoft */ 112369800Stomsoft sblock.fs_csaddr=cgdmin(&sblock, osblock.fs_ncg); 112469800Stomsoft ncscg=dtog(&sblock, sblock.fs_csaddr); 112569800Stomsoft cs=fscs+ncscg; 112669800Stomsoft 112781311Schm 112869800Stomsoft /* 112981311Schm * If Nflag is specified, we would now read random data instead 113081311Schm * of an empty cg structure from disk. So we can't simulate that 113181311Schm * part for now. 113281311Schm */ 113381311Schm if(Nflag) { 113481311Schm DBG_PRINT0("nscg update skipped\n"); 113581311Schm DBG_LEAVE; 113681311Schm return; 113781311Schm } 113881311Schm 113981311Schm /* 114069800Stomsoft * Read the future cylinder group containing the cylinder 114169800Stomsoft * summary from disk, and make a copy. 114269800Stomsoft */ 114369800Stomsoft rdfs(fsbtodb(&sblock, cgtod(&sblock, ncscg)), 114477885Stomsoft (size_t)sblock.fs_cgsize, (void *)&aocg, fsi); 114569800Stomsoft DBG_PRINT0("nscg read\n"); 114669926Stomsoft DBG_DUMP_CG(&sblock, 114769926Stomsoft "new summary cg", 114869926Stomsoft &aocg); 114969800Stomsoft 115069800Stomsoft memcpy((void *)&cgun1, (void *)&cgun2, sizeof(cgun2)); 115169800Stomsoft 115269800Stomsoft /* 115369800Stomsoft * Allocate all complete blocks used by the new cylinder 115469800Stomsoft * summary. 115569800Stomsoft */ 115669800Stomsoft for(d=sblock.fs_csaddr; d+sblock.fs_frag <= 115769800Stomsoft sblock.fs_csaddr+(sblock.fs_cssize/sblock.fs_fsize); 115869800Stomsoft d+=sblock.fs_frag) { 115969800Stomsoft clrblock(&sblock, cg_blksfree(&acg), 116069800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 116169800Stomsoft acg.cg_cs.cs_nbfree--; 116269800Stomsoft sblock.fs_cstotal.cs_nbfree--; 116369800Stomsoft if(sblock.fs_contigsumsize > 0) { 116469800Stomsoft clrbit(cg_clustersfree(&acg), 116569800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 116669800Stomsoft } 116769800Stomsoft } 116869800Stomsoft 116969800Stomsoft /* 117069800Stomsoft * Allocate all fragments used by the cylinder summary in the 117169800Stomsoft * last block. 117269800Stomsoft */ 117369800Stomsoft if(d<sblock.fs_csaddr+(sblock.fs_cssize/sblock.fs_fsize)) { 117469800Stomsoft for(; d-sblock.fs_csaddr< 117569800Stomsoft sblock.fs_cssize/sblock.fs_fsize; 117669800Stomsoft d++) { 117769800Stomsoft clrbit(cg_blksfree(&acg), d%sblock.fs_fpg); 117869800Stomsoft acg.cg_cs.cs_nffree--; 117969800Stomsoft sblock.fs_cstotal.cs_nffree--; 118069800Stomsoft } 118169800Stomsoft acg.cg_cs.cs_nbfree--; 118269800Stomsoft acg.cg_cs.cs_nffree+=sblock.fs_frag; 118369800Stomsoft sblock.fs_cstotal.cs_nbfree--; 118469800Stomsoft sblock.fs_cstotal.cs_nffree+=sblock.fs_frag; 118569800Stomsoft if(sblock.fs_contigsumsize > 0) { 118669800Stomsoft clrbit(cg_clustersfree(&acg), 118769800Stomsoft (d%sblock.fs_fpg)/sblock.fs_frag); 118869800Stomsoft } 118969800Stomsoft 119069800Stomsoft frag_adjust(d%sblock.fs_fpg, +1); 119169800Stomsoft } 119269800Stomsoft /* 119369800Stomsoft * XXX Handle the cluster statistics here in the case this 119469800Stomsoft * cylinder group is now almost full, and the remaining 119569800Stomsoft * space is less then the maximum cluster size. This is 119669800Stomsoft * probably not needed, as you would hardly find a file 119769800Stomsoft * system which has only MAXCSBUFS+FS_MAXCONTIG of free 119869800Stomsoft * space right behind the cylinder group information in 119969800Stomsoft * any new cylinder group. 120069800Stomsoft */ 120169800Stomsoft 120269800Stomsoft /* 120369800Stomsoft * Update our statistics in the cylinder summary. 120469800Stomsoft */ 120569800Stomsoft *cs = acg.cg_cs; 120669800Stomsoft 120769800Stomsoft /* 120869800Stomsoft * Write the new cylinder group containing the cylinder summary 120969800Stomsoft * back to disk. 121069800Stomsoft */ 121177885Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, ncscg)), 121277885Stomsoft (size_t)sblock.fs_cgsize, (void *)&acg, fso, Nflag); 121369800Stomsoft DBG_PRINT0("nscg written\n"); 121469926Stomsoft DBG_DUMP_CG(&sblock, 121569926Stomsoft "new summary cg", 121669926Stomsoft &acg); 121769800Stomsoft 121869800Stomsoft DBG_LEAVE; 121969800Stomsoft return; 122069800Stomsoft } 122169800Stomsoft /* 122269800Stomsoft * We have got enough of space in the current cylinder group, so we 122369800Stomsoft * can relocate just a few blocks, and let the summary information 122469800Stomsoft * grow in place where it is right now. 122569800Stomsoft */ 122669800Stomsoft DBG_TRC; 122769800Stomsoft 122869800Stomsoft cbase = cgbase(&osblock, ocscg); /* old and new are equal */ 122969800Stomsoft dupper = sblock.fs_csaddr - cbase + 123069800Stomsoft howmany(sblock.fs_cssize, sblock.fs_fsize); 123169800Stomsoft odupper = osblock.fs_csaddr - cbase + 123269800Stomsoft howmany(osblock.fs_cssize, osblock.fs_fsize); 123369800Stomsoft 123469800Stomsoft sblock.fs_dsize -= dupper-odupper; 123569800Stomsoft 123669800Stomsoft /* 123769800Stomsoft * Allocate the space for the array of blocks to be relocated. 123869800Stomsoft */ 123969800Stomsoft bp=(struct gfs_bpp *)malloc(((dupper-odupper)/sblock.fs_frag+2)* 124069800Stomsoft sizeof(struct gfs_bpp)); 124169926Stomsoft if(bp == NULL) { 124269926Stomsoft errx(1, "malloc failed"); 124369926Stomsoft } 124477779Stomsoft memset((char *)bp, 0, ((dupper-odupper)/sblock.fs_frag+2)* 124577779Stomsoft sizeof(struct gfs_bpp)); 124669800Stomsoft 124769800Stomsoft /* 124869800Stomsoft * Lock all new frags needed for the cylinder group summary. This is 124969800Stomsoft * done per fragment in the first and last block of the new required 125069800Stomsoft * area, and per block for all other blocks. 125169800Stomsoft * 125269800Stomsoft * Handle the first new block here (but only if some fragments where 125369800Stomsoft * already used for the cylinder summary). 125469800Stomsoft */ 125569800Stomsoft ind=0; 125669800Stomsoft frag_adjust(odupper, -1); 125769800Stomsoft for(d=odupper; ((d<dupper)&&(d%sblock.fs_frag)); d++) { 125869926Stomsoft DBG_PRINT1("scg first frag check loop d=%d\n", 125969926Stomsoft d); 126069800Stomsoft if(isclr(cg_blksfree(&acg), d)) { 126169800Stomsoft if (!ind) { 126269800Stomsoft bp[ind].old=d/sblock.fs_frag; 126369800Stomsoft bp[ind].flags|=GFS_FL_FIRST; 126469800Stomsoft if(roundup(d, sblock.fs_frag) >= dupper) { 126569800Stomsoft bp[ind].flags|=GFS_FL_LAST; 126669800Stomsoft } 126769800Stomsoft ind++; 126869800Stomsoft } 126969800Stomsoft } else { 127069800Stomsoft clrbit(cg_blksfree(&acg), d); 127169800Stomsoft acg.cg_cs.cs_nffree--; 127269800Stomsoft sblock.fs_cstotal.cs_nffree--; 127369800Stomsoft } 127469800Stomsoft /* 127569800Stomsoft * No cluster handling is needed here, as there was at least 127669800Stomsoft * one fragment in use by the cylinder summary in the old 1277102231Strhodes * file system. 127869800Stomsoft * No block-free counter handling here as this block was not 127969800Stomsoft * a free block. 128069800Stomsoft */ 128169800Stomsoft } 128269800Stomsoft frag_adjust(odupper, 1); 128369800Stomsoft 128469800Stomsoft /* 128569800Stomsoft * Handle all needed complete blocks here. 128669800Stomsoft */ 128769800Stomsoft for(; d+sblock.fs_frag<=dupper; d+=sblock.fs_frag) { 128869926Stomsoft DBG_PRINT1("scg block check loop d=%d\n", 128969926Stomsoft d); 129069800Stomsoft if(!isblock(&sblock, cg_blksfree(&acg), d/sblock.fs_frag)) { 129169800Stomsoft for(f=d; f<d+sblock.fs_frag; f++) { 129269800Stomsoft if(isset(cg_blksfree(&aocg), f)) { 129369800Stomsoft acg.cg_cs.cs_nffree--; 129469800Stomsoft sblock.fs_cstotal.cs_nffree--; 129569800Stomsoft } 129669800Stomsoft } 129769800Stomsoft clrblock(&sblock, cg_blksfree(&acg), d/sblock.fs_frag); 129869800Stomsoft bp[ind].old=d/sblock.fs_frag; 129969800Stomsoft ind++; 130069800Stomsoft } else { 130169800Stomsoft clrblock(&sblock, cg_blksfree(&acg), d/sblock.fs_frag); 130269800Stomsoft acg.cg_cs.cs_nbfree--; 130369800Stomsoft sblock.fs_cstotal.cs_nbfree--; 130469800Stomsoft if(sblock.fs_contigsumsize > 0) { 130569800Stomsoft clrbit(cg_clustersfree(&acg), d/sblock.fs_frag); 130669800Stomsoft for(lcs=0, l=(d/sblock.fs_frag)+1; 130769800Stomsoft lcs<sblock.fs_contigsumsize; 130869800Stomsoft l++, lcs++ ) { 130969800Stomsoft if(isclr(cg_clustersfree(&acg),l)){ 131069800Stomsoft break; 131169800Stomsoft } 131269800Stomsoft } 131369800Stomsoft if(lcs < sblock.fs_contigsumsize) { 131469800Stomsoft cg_clustersum(&acg)[lcs+1]--; 131569800Stomsoft if(lcs) { 131669800Stomsoft cg_clustersum(&acg)[lcs]++; 131769800Stomsoft } 131869800Stomsoft } 131969800Stomsoft } 132069800Stomsoft } 132169800Stomsoft /* 132269800Stomsoft * No fragment counter handling is needed here, as this finally 132369800Stomsoft * doesn't change after the relocation. 132469800Stomsoft */ 132569800Stomsoft } 132669800Stomsoft 132769800Stomsoft /* 132869800Stomsoft * Handle all fragments needed in the last new affected block. 132969800Stomsoft */ 133069800Stomsoft if(d<dupper) { 133169800Stomsoft frag_adjust(dupper-1, -1); 133269800Stomsoft 133369800Stomsoft if(isblock(&sblock, cg_blksfree(&acg), d/sblock.fs_frag)) { 133469800Stomsoft acg.cg_cs.cs_nbfree--; 133569800Stomsoft sblock.fs_cstotal.cs_nbfree--; 133669800Stomsoft acg.cg_cs.cs_nffree+=sblock.fs_frag; 133769800Stomsoft sblock.fs_cstotal.cs_nffree+=sblock.fs_frag; 133869800Stomsoft if(sblock.fs_contigsumsize > 0) { 133969800Stomsoft clrbit(cg_clustersfree(&acg), d/sblock.fs_frag); 134069800Stomsoft for(lcs=0, l=(d/sblock.fs_frag)+1; 134169800Stomsoft lcs<sblock.fs_contigsumsize; 134269800Stomsoft l++, lcs++ ) { 134369800Stomsoft if(isclr(cg_clustersfree(&acg),l)){ 134469800Stomsoft break; 134569800Stomsoft } 134669800Stomsoft } 134769800Stomsoft if(lcs < sblock.fs_contigsumsize) { 134869800Stomsoft cg_clustersum(&acg)[lcs+1]--; 134969800Stomsoft if(lcs) { 135069800Stomsoft cg_clustersum(&acg)[lcs]++; 135169800Stomsoft } 135269800Stomsoft } 135369800Stomsoft } 135469800Stomsoft } 135569800Stomsoft 135669800Stomsoft for(; d<dupper; d++) { 135769926Stomsoft DBG_PRINT1("scg second frag check loop d=%d\n", 135869926Stomsoft d); 135969800Stomsoft if(isclr(cg_blksfree(&acg), d)) { 136069800Stomsoft bp[ind].old=d/sblock.fs_frag; 136169800Stomsoft bp[ind].flags|=GFS_FL_LAST; 136269800Stomsoft } else { 136369800Stomsoft clrbit(cg_blksfree(&acg), d); 136469800Stomsoft acg.cg_cs.cs_nffree--; 136569800Stomsoft sblock.fs_cstotal.cs_nffree--; 136669800Stomsoft } 136769800Stomsoft } 136869800Stomsoft if(bp[ind].flags & GFS_FL_LAST) { /* we have to advance here */ 136969800Stomsoft ind++; 137069800Stomsoft } 137169800Stomsoft frag_adjust(dupper-1, 1); 137269800Stomsoft } 137369800Stomsoft 137469800Stomsoft /* 137569800Stomsoft * If we found a block to relocate just do so. 137669800Stomsoft */ 137769800Stomsoft if(ind) { 137869800Stomsoft for(i=0; i<ind; i++) { 137969800Stomsoft if(!bp[i].old) { /* no more blocks listed */ 138069800Stomsoft /* 138169800Stomsoft * XXX A relative blocknumber should not be 138269800Stomsoft * zero, which is not explicitly 138369800Stomsoft * guaranteed by our code. 138469800Stomsoft */ 138569800Stomsoft break; 138669800Stomsoft } 138769800Stomsoft /* 138869800Stomsoft * Allocate a complete block in the same (current) 138969800Stomsoft * cylinder group. 139069800Stomsoft */ 139169800Stomsoft bp[i].new=alloc()/sblock.fs_frag; 139269800Stomsoft 139369800Stomsoft /* 139469800Stomsoft * There is no frag_adjust() needed for the new block 139569800Stomsoft * as it will have no fragments yet :-). 139669800Stomsoft */ 139769800Stomsoft for(f=bp[i].old*sblock.fs_frag, 139869800Stomsoft g=bp[i].new*sblock.fs_frag; 139969800Stomsoft f<(bp[i].old+1)*sblock.fs_frag; 140069800Stomsoft f++, g++) { 140169800Stomsoft if(isset(cg_blksfree(&aocg), f)) { 140269800Stomsoft setbit(cg_blksfree(&acg), g); 140369800Stomsoft acg.cg_cs.cs_nffree++; 140469800Stomsoft sblock.fs_cstotal.cs_nffree++; 140569800Stomsoft } 140669800Stomsoft } 140769800Stomsoft 140869800Stomsoft /* 140969800Stomsoft * Special handling is required if this was the first 141069800Stomsoft * block. We have to consider the fragments which were 141169800Stomsoft * used by the cylinder summary in the original block 141269800Stomsoft * which re to be free in the copy of our block. We 141369800Stomsoft * have to be careful if this first block happens to 141469800Stomsoft * be also the last block to be relocated. 141569800Stomsoft */ 141669800Stomsoft if(bp[i].flags & GFS_FL_FIRST) { 141769800Stomsoft for(f=bp[i].old*sblock.fs_frag, 141869800Stomsoft g=bp[i].new*sblock.fs_frag; 141969800Stomsoft f<odupper; 142069800Stomsoft f++, g++) { 142169800Stomsoft setbit(cg_blksfree(&acg), g); 142269800Stomsoft acg.cg_cs.cs_nffree++; 142369800Stomsoft sblock.fs_cstotal.cs_nffree++; 142469800Stomsoft } 142569800Stomsoft if(!(bp[i].flags & GFS_FL_LAST)) { 142669800Stomsoft frag_adjust(bp[i].new*sblock.fs_frag,1); 142769800Stomsoft } 142869800Stomsoft 142969800Stomsoft } 143069800Stomsoft 143169800Stomsoft /* 143269800Stomsoft * Special handling is required if this is the last 143369800Stomsoft * block to be relocated. 143469800Stomsoft */ 143569800Stomsoft if(bp[i].flags & GFS_FL_LAST) { 143669800Stomsoft frag_adjust(bp[i].new*sblock.fs_frag, 1); 143769800Stomsoft frag_adjust(bp[i].old*sblock.fs_frag, -1); 143869800Stomsoft for(f=dupper; 143969800Stomsoft f<roundup(dupper, sblock.fs_frag); 144069800Stomsoft f++) { 144169800Stomsoft if(isclr(cg_blksfree(&acg), f)) { 144269800Stomsoft setbit(cg_blksfree(&acg), f); 144369800Stomsoft acg.cg_cs.cs_nffree++; 144469800Stomsoft sblock.fs_cstotal.cs_nffree++; 144569800Stomsoft } 144669800Stomsoft } 144769800Stomsoft frag_adjust(bp[i].old*sblock.fs_frag, 1); 144869800Stomsoft } 144969800Stomsoft 145069800Stomsoft /* 145169800Stomsoft * !!! Attach the cylindergroup offset here. 145269800Stomsoft */ 145369800Stomsoft bp[i].old+=cbase/sblock.fs_frag; 145469800Stomsoft bp[i].new+=cbase/sblock.fs_frag; 145569800Stomsoft 145669800Stomsoft /* 145769800Stomsoft * Copy the content of the block. 145869800Stomsoft */ 145969800Stomsoft /* 146069800Stomsoft * XXX Here we will have to implement a copy on write 146169800Stomsoft * in the case we have any active snapshots. 146269800Stomsoft */ 146369800Stomsoft rdfs(fsbtodb(&sblock, bp[i].old*sblock.fs_frag), 146477885Stomsoft (size_t)sblock.fs_bsize, (void *)&ablk, fsi); 146569800Stomsoft wtfs(fsbtodb(&sblock, bp[i].new*sblock.fs_frag), 146677885Stomsoft (size_t)sblock.fs_bsize, (void *)&ablk, fso, Nflag); 146769926Stomsoft DBG_DUMP_HEX(&sblock, 146869926Stomsoft "copied full block", 146969926Stomsoft (unsigned char *)&ablk); 147069800Stomsoft 147169926Stomsoft DBG_PRINT2("scg (%d->%d) block relocated\n", 147269926Stomsoft bp[i].old, 147369926Stomsoft bp[i].new); 147469800Stomsoft } 147569800Stomsoft 147669800Stomsoft /* 147769800Stomsoft * Now we have to update all references to any fragment which 147869800Stomsoft * belongs to any block relocated. We iterate now over all 147969800Stomsoft * cylinder groups, within those over all non zero length 148069800Stomsoft * inodes. 148169800Stomsoft */ 148269800Stomsoft for(cylno=0; cylno<osblock.fs_ncg; cylno++) { 148369926Stomsoft DBG_PRINT1("scg doing cg (%d)\n", 148469926Stomsoft cylno); 148569800Stomsoft for(inc=osblock.fs_ipg-1 ; inc>=0 ; inc--) { 148669800Stomsoft updrefs(cylno, (ino_t)inc, bp, fsi, fso, Nflag); 148769800Stomsoft } 148869800Stomsoft } 148969800Stomsoft 149069800Stomsoft /* 149169800Stomsoft * All inodes are checked, now make sure the number of 149269800Stomsoft * references found make sense. 149369800Stomsoft */ 149469800Stomsoft for(i=0; i<ind; i++) { 149569800Stomsoft if(!bp[i].found || (bp[i].found>sblock.fs_frag)) { 149669926Stomsoft warnx("error: %d refs found for block %d.", 149769800Stomsoft bp[i].found, bp[i].old); 149869800Stomsoft } 149969800Stomsoft 150069800Stomsoft } 150169800Stomsoft } 150269800Stomsoft /* 150369800Stomsoft * The following statistics are not changed here: 150469800Stomsoft * sblock.fs_cstotal.cs_ndir 150569800Stomsoft * sblock.fs_cstotal.cs_nifree 150669800Stomsoft * The following statistics were already updated on the fly: 150769800Stomsoft * sblock.fs_cstotal.cs_nffree 150869800Stomsoft * sblock.fs_cstotal.cs_nbfree 150969800Stomsoft * As the statistics for this cylinder group are ready, copy it to 151069800Stomsoft * the summary information array. 151169800Stomsoft */ 151269800Stomsoft 151369800Stomsoft *cs = acg.cg_cs; 151469800Stomsoft 151569800Stomsoft /* 151669800Stomsoft * Write summary cylinder group back to disk. 151769800Stomsoft */ 151877885Stomsoft wtfs(fsbtodb(&sblock, cgtod(&sblock, ocscg)), (size_t)sblock.fs_cgsize, 151977885Stomsoft (void *)&acg, fso, Nflag); 152069800Stomsoft DBG_PRINT0("scg written\n"); 152169926Stomsoft DBG_DUMP_CG(&sblock, 152269926Stomsoft "new summary cg", 152369926Stomsoft &acg); 152469800Stomsoft 152569800Stomsoft DBG_LEAVE; 152669800Stomsoft return; 152769800Stomsoft} 152869800Stomsoft 152969800Stomsoft/* ************************************************************** rdfs ***** */ 153069800Stomsoft/* 153169800Stomsoft * Here we read some block(s) from disk. 153269800Stomsoft */ 153369800Stomsoftstatic void 153498542Smckusickrdfs(ufs2_daddr_t bno, size_t size, void *bf, int fsi) 153569800Stomsoft{ 153669800Stomsoft DBG_FUNC("rdfs") 153777885Stomsoft ssize_t n; 153869800Stomsoft 153969800Stomsoft DBG_ENTER; 154069800Stomsoft 154169800Stomsoft if (lseek(fsi, (off_t)bno * DEV_BSIZE, 0) < 0) { 154269926Stomsoft err(33, "rdfs: seek error: %ld", (long)bno); 154369800Stomsoft } 154477885Stomsoft n = read(fsi, bf, size); 154577885Stomsoft if (n != (ssize_t)size) { 154669926Stomsoft err(34, "rdfs: read error: %ld", (long)bno); 154769800Stomsoft } 154869800Stomsoft 154969800Stomsoft DBG_LEAVE; 155069800Stomsoft return; 155169800Stomsoft} 155269800Stomsoft 155369800Stomsoft/* ************************************************************** wtfs ***** */ 155469800Stomsoft/* 155569800Stomsoft * Here we write some block(s) to disk. 155669800Stomsoft */ 155769800Stomsoftstatic void 155898542Smckusickwtfs(ufs2_daddr_t bno, size_t size, void *bf, int fso, unsigned int Nflag) 155969800Stomsoft{ 156069800Stomsoft DBG_FUNC("wtfs") 156177885Stomsoft ssize_t n; 156269800Stomsoft 156369800Stomsoft DBG_ENTER; 156469800Stomsoft 156569800Stomsoft if (Nflag) { 156669800Stomsoft DBG_LEAVE; 156769800Stomsoft return; 156869800Stomsoft } 156969800Stomsoft if (lseek(fso, (off_t)bno * DEV_BSIZE, SEEK_SET) < 0) { 157069926Stomsoft err(35, "wtfs: seek error: %ld", (long)bno); 157169800Stomsoft } 157277885Stomsoft n = write(fso, bf, size); 157377885Stomsoft if (n != (ssize_t)size) { 157469926Stomsoft err(36, "wtfs: write error: %ld", (long)bno); 157569800Stomsoft } 157669800Stomsoft 157769800Stomsoft DBG_LEAVE; 157869800Stomsoft return; 157969800Stomsoft} 158069800Stomsoft 158169800Stomsoft/* ************************************************************* alloc ***** */ 158269800Stomsoft/* 158369800Stomsoft * Here we allocate a free block in the current cylinder group. It is assumed, 158469800Stomsoft * that acg contains the current cylinder group. As we may take a block from 1585102231Strhodes * somewhere in the file system we have to handle cluster summary here. 158669800Stomsoft */ 158798542Smckusickstatic ufs2_daddr_t 158869800Stomsoftalloc(void) 158969800Stomsoft{ 159069800Stomsoft DBG_FUNC("alloc") 159198542Smckusick ufs2_daddr_t d, blkno; 159269800Stomsoft int lcs1, lcs2; 159369800Stomsoft int l; 159469800Stomsoft int csmin, csmax; 159569800Stomsoft int dlower, dupper, dmax; 159669800Stomsoft 159769800Stomsoft DBG_ENTER; 159869800Stomsoft 159969800Stomsoft if (acg.cg_magic != CG_MAGIC) { 160069926Stomsoft warnx("acg: bad magic number"); 160169800Stomsoft DBG_LEAVE; 160269800Stomsoft return (0); 160369800Stomsoft } 160469800Stomsoft if (acg.cg_cs.cs_nbfree == 0) { 160569926Stomsoft warnx("error: cylinder group ran out of space"); 160669800Stomsoft DBG_LEAVE; 160769800Stomsoft return (0); 160869800Stomsoft } 160969800Stomsoft /* 161069800Stomsoft * We start seeking for free blocks only from the space available after 161169800Stomsoft * the end of the new grown cylinder summary. Otherwise we allocate a 161269800Stomsoft * block here which we have to relocate a couple of seconds later again 161369800Stomsoft * again, and we are not prepared to to this anyway. 161469800Stomsoft */ 161569800Stomsoft blkno=-1; 161669800Stomsoft dlower=cgsblock(&sblock, acg.cg_cgx)-cgbase(&sblock, acg.cg_cgx); 161769800Stomsoft dupper=cgdmin(&sblock, acg.cg_cgx)-cgbase(&sblock, acg.cg_cgx); 161869800Stomsoft dmax=cgbase(&sblock, acg.cg_cgx)+sblock.fs_fpg; 161969800Stomsoft if (dmax > sblock.fs_size) { 162069800Stomsoft dmax = sblock.fs_size; 162169800Stomsoft } 162269800Stomsoft dmax-=cgbase(&sblock, acg.cg_cgx); /* retransform into cg */ 162369800Stomsoft csmin=sblock.fs_csaddr-cgbase(&sblock, acg.cg_cgx); 162469800Stomsoft csmax=csmin+howmany(sblock.fs_cssize, sblock.fs_fsize); 162569926Stomsoft DBG_PRINT3("seek range: dl=%d, du=%d, dm=%d\n", 162669926Stomsoft dlower, 162769926Stomsoft dupper, 162869926Stomsoft dmax); 162969926Stomsoft DBG_PRINT2("range cont: csmin=%d, csmax=%d\n", 163069926Stomsoft csmin, 163169926Stomsoft csmax); 163269800Stomsoft 163369800Stomsoft for(d=0; (d<dlower && blkno==-1); d+=sblock.fs_frag) { 163469800Stomsoft if(d>=csmin && d<=csmax) { 163569800Stomsoft continue; 163669800Stomsoft } 163769800Stomsoft if(isblock(&sblock, cg_blksfree(&acg), fragstoblks(&sblock, 163869800Stomsoft d))) { 163969800Stomsoft blkno = fragstoblks(&sblock, d);/* Yeah found a block */ 164069800Stomsoft break; 164169800Stomsoft } 164269800Stomsoft } 164369800Stomsoft for(d=dupper; (d<dmax && blkno==-1); d+=sblock.fs_frag) { 164469800Stomsoft if(d>=csmin && d<=csmax) { 164569800Stomsoft continue; 164669800Stomsoft } 164769800Stomsoft if(isblock(&sblock, cg_blksfree(&acg), fragstoblks(&sblock, 164869800Stomsoft d))) { 164969800Stomsoft blkno = fragstoblks(&sblock, d);/* Yeah found a block */ 165069800Stomsoft break; 165169800Stomsoft } 165269800Stomsoft } 165369800Stomsoft if(blkno==-1) { 165469926Stomsoft warnx("internal error: couldn't find promised block in cg"); 165569800Stomsoft DBG_LEAVE; 165669800Stomsoft return (0); 165769800Stomsoft } 165869800Stomsoft 165969800Stomsoft /* 166069800Stomsoft * This is needed if the block was found already in the first loop. 166169800Stomsoft */ 166269800Stomsoft d=blkstofrags(&sblock, blkno); 166369800Stomsoft 166469800Stomsoft clrblock(&sblock, cg_blksfree(&acg), blkno); 166569800Stomsoft if (sblock.fs_contigsumsize > 0) { 166669800Stomsoft /* 166769800Stomsoft * Handle the cluster allocation bitmap. 166869800Stomsoft */ 166969800Stomsoft clrbit(cg_clustersfree(&acg), blkno); 167069800Stomsoft /* 167169800Stomsoft * We possibly have split a cluster here, so we have to do 167269926Stomsoft * recalculate the sizes of the remaining cluster halves now, 167369800Stomsoft * and use them for updating the cluster summary information. 167469800Stomsoft * 167569800Stomsoft * Lets start with the blocks before our allocated block ... 167669800Stomsoft */ 167769800Stomsoft for(lcs1=0, l=blkno-1; lcs1<sblock.fs_contigsumsize; 167869800Stomsoft l--, lcs1++ ) { 167969800Stomsoft if(isclr(cg_clustersfree(&acg),l)){ 168069800Stomsoft break; 168169800Stomsoft } 168269800Stomsoft } 168369800Stomsoft /* 168469800Stomsoft * ... and continue with the blocks right after our allocated 168569800Stomsoft * block. 168669800Stomsoft */ 168769800Stomsoft for(lcs2=0, l=blkno+1; lcs2<sblock.fs_contigsumsize; 168869800Stomsoft l++, lcs2++ ) { 168969800Stomsoft if(isclr(cg_clustersfree(&acg),l)){ 169069800Stomsoft break; 169169800Stomsoft } 169269800Stomsoft } 169369800Stomsoft 169469800Stomsoft /* 169569800Stomsoft * Now update all counters. 169669800Stomsoft */ 169769800Stomsoft cg_clustersum(&acg)[MIN(lcs1+lcs2+1,sblock.fs_contigsumsize)]--; 169869800Stomsoft if(lcs1) { 169969800Stomsoft cg_clustersum(&acg)[lcs1]++; 170069800Stomsoft } 170169800Stomsoft if(lcs2) { 170269800Stomsoft cg_clustersum(&acg)[lcs2]++; 170369800Stomsoft } 170469800Stomsoft } 170569800Stomsoft /* 170669800Stomsoft * Update all statistics based on blocks. 170769800Stomsoft */ 170869800Stomsoft acg.cg_cs.cs_nbfree--; 170969800Stomsoft sblock.fs_cstotal.cs_nbfree--; 171069800Stomsoft 171169800Stomsoft DBG_LEAVE; 171269800Stomsoft return (d); 171369800Stomsoft} 171469800Stomsoft 171569800Stomsoft/* *********************************************************** isblock ***** */ 171669800Stomsoft/* 171769800Stomsoft * Here we check if all frags of a block are free. For more details again 171869800Stomsoft * please see the source of newfs(8), as this function is taken over almost 171969800Stomsoft * unchanged. 172069800Stomsoft */ 172169800Stomsoftstatic int 172269800Stomsoftisblock(struct fs *fs, unsigned char *cp, int h) 172369800Stomsoft{ 172469800Stomsoft DBG_FUNC("isblock") 172569800Stomsoft unsigned char mask; 172669800Stomsoft 172769800Stomsoft DBG_ENTER; 172869800Stomsoft 172969800Stomsoft switch (fs->fs_frag) { 173069800Stomsoft case 8: 173169800Stomsoft DBG_LEAVE; 173269800Stomsoft return (cp[h] == 0xff); 173369800Stomsoft case 4: 173469800Stomsoft mask = 0x0f << ((h & 0x1) << 2); 173569800Stomsoft DBG_LEAVE; 173669800Stomsoft return ((cp[h >> 1] & mask) == mask); 173769800Stomsoft case 2: 173869800Stomsoft mask = 0x03 << ((h & 0x3) << 1); 173969800Stomsoft DBG_LEAVE; 174069800Stomsoft return ((cp[h >> 2] & mask) == mask); 174169800Stomsoft case 1: 174269800Stomsoft mask = 0x01 << (h & 0x7); 174369800Stomsoft DBG_LEAVE; 174469800Stomsoft return ((cp[h >> 3] & mask) == mask); 174569800Stomsoft default: 174669800Stomsoft fprintf(stderr, "isblock bad fs_frag %d\n", fs->fs_frag); 174769800Stomsoft DBG_LEAVE; 174869800Stomsoft return (0); 174969800Stomsoft } 175069800Stomsoft} 175169800Stomsoft 175269800Stomsoft/* ********************************************************** clrblock ***** */ 175369800Stomsoft/* 175469800Stomsoft * Here we allocate a complete block in the block map. For more details again 175569800Stomsoft * please see the source of newfs(8), as this function is taken over almost 175669800Stomsoft * unchanged. 175769800Stomsoft */ 175869800Stomsoftstatic void 175969800Stomsoftclrblock(struct fs *fs, unsigned char *cp, int h) 176069800Stomsoft{ 176169800Stomsoft DBG_FUNC("clrblock") 176269800Stomsoft 176369800Stomsoft DBG_ENTER; 176469800Stomsoft 176569800Stomsoft switch ((fs)->fs_frag) { 176669800Stomsoft case 8: 176769800Stomsoft cp[h] = 0; 176869800Stomsoft break; 176969800Stomsoft case 4: 177069800Stomsoft cp[h >> 1] &= ~(0x0f << ((h & 0x1) << 2)); 177169800Stomsoft break; 177269800Stomsoft case 2: 177369800Stomsoft cp[h >> 2] &= ~(0x03 << ((h & 0x3) << 1)); 177469800Stomsoft break; 177569800Stomsoft case 1: 177669800Stomsoft cp[h >> 3] &= ~(0x01 << (h & 0x7)); 177769800Stomsoft break; 177869800Stomsoft default: 177969926Stomsoft warnx("clrblock bad fs_frag %d", fs->fs_frag); 178069800Stomsoft break; 178169800Stomsoft } 178269800Stomsoft 178369800Stomsoft DBG_LEAVE; 178469800Stomsoft return; 178569800Stomsoft} 178669800Stomsoft 178769800Stomsoft/* ********************************************************** setblock ***** */ 178869800Stomsoft/* 178969800Stomsoft * Here we free a complete block in the free block map. For more details again 179069800Stomsoft * please see the source of newfs(8), as this function is taken over almost 179169800Stomsoft * unchanged. 179269800Stomsoft */ 179369800Stomsoftstatic void 179469800Stomsoftsetblock(struct fs *fs, unsigned char *cp, int h) 179569800Stomsoft{ 179669800Stomsoft DBG_FUNC("setblock") 179769800Stomsoft 179869800Stomsoft DBG_ENTER; 179969800Stomsoft 180069800Stomsoft switch (fs->fs_frag) { 180169800Stomsoft case 8: 180269800Stomsoft cp[h] = 0xff; 180369800Stomsoft break; 180469800Stomsoft case 4: 180569800Stomsoft cp[h >> 1] |= (0x0f << ((h & 0x1) << 2)); 180669800Stomsoft break; 180769800Stomsoft case 2: 180869800Stomsoft cp[h >> 2] |= (0x03 << ((h & 0x3) << 1)); 180969800Stomsoft break; 181069800Stomsoft case 1: 181169800Stomsoft cp[h >> 3] |= (0x01 << (h & 0x7)); 181269800Stomsoft break; 181369800Stomsoft default: 181469926Stomsoft warnx("setblock bad fs_frag %d", fs->fs_frag); 181569800Stomsoft break; 181669800Stomsoft } 181769800Stomsoft 181869800Stomsoft DBG_LEAVE; 181969800Stomsoft return; 182069800Stomsoft} 182169800Stomsoft 182269800Stomsoft/* ************************************************************ ginode ***** */ 182369800Stomsoft/* 182469800Stomsoft * This function provides access to an individual inode. We find out in which 182569800Stomsoft * block the requested inode is located, read it from disk if needed, and 182669800Stomsoft * return the pointer into that block. We maintain a cache of one block to 182769926Stomsoft * not read the same block again and again if we iterate linearly over all 182869800Stomsoft * inodes. 182969800Stomsoft */ 183098542Smckusickstatic union dinode * 183169800Stomsoftginode(ino_t inumber, int fsi, int cg) 183269800Stomsoft{ 183369800Stomsoft DBG_FUNC("ginode") 183498542Smckusick static ino_t startinum = 0; /* first inode in cached block */ 183569800Stomsoft 183669800Stomsoft DBG_ENTER; 183769800Stomsoft 183898542Smckusick inumber += (cg * sblock.fs_ipg); 183998542Smckusick if (inumber < ROOTINO || inumber > maxino) 184098542Smckusick errx(8, "bad inode number %d to ginode", inumber); 184198542Smckusick if (startinum == 0 || 184298542Smckusick inumber < startinum || inumber >= startinum + INOPB(&sblock)) { 184398542Smckusick inoblk = fsbtodb(&sblock, ino_to_fsba(&sblock, inumber)); 184498542Smckusick rdfs(inoblk, (size_t)sblock.fs_bsize, inobuf, fsi); 184569800Stomsoft startinum = (inumber / INOPB(&sblock)) * INOPB(&sblock); 184669800Stomsoft } 184769800Stomsoft DBG_LEAVE; 184898542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 184998542Smckusick return ((union dinode *) 185098542Smckusick &((struct ufs1_dinode *)inobuf)[inumber % INOPB(&sblock)]); 185198542Smckusick return ((union dinode *) 185298542Smckusick &((struct ufs2_dinode *)inobuf)[inumber % INOPB(&sblock)]); 185369800Stomsoft} 185469800Stomsoft 185569800Stomsoft/* ****************************************************** charsperline ***** */ 185669800Stomsoft/* 185769800Stomsoft * Figure out how many lines our current terminal has. For more details again 185869800Stomsoft * please see the source of newfs(8), as this function is taken over almost 185969800Stomsoft * unchanged. 186069800Stomsoft */ 186169800Stomsoftstatic int 186269800Stomsoftcharsperline(void) 186369800Stomsoft{ 186469800Stomsoft DBG_FUNC("charsperline") 186569800Stomsoft int columns; 186669800Stomsoft char *cp; 186769800Stomsoft struct winsize ws; 186869800Stomsoft 186969800Stomsoft DBG_ENTER; 187069800Stomsoft 187169800Stomsoft columns = 0; 187269800Stomsoft if (ioctl(0, TIOCGWINSZ, &ws) != -1) { 187369800Stomsoft columns = ws.ws_col; 187469800Stomsoft } 187569800Stomsoft if (columns == 0 && (cp = getenv("COLUMNS"))) { 187669800Stomsoft columns = atoi(cp); 187769800Stomsoft } 187869800Stomsoft if (columns == 0) { 187969800Stomsoft columns = 80; /* last resort */ 188069800Stomsoft } 188169800Stomsoft 188269800Stomsoft DBG_LEAVE; 188369800Stomsoft return columns; 188469800Stomsoft} 188569800Stomsoft 188669800Stomsoft/* ************************************************************** main ***** */ 188769800Stomsoft/* 188869800Stomsoft * growfs(8) is a utility which allows to increase the size of an existing 1889102231Strhodes * ufs file system. Currently this can only be done on unmounted file system. 189069800Stomsoft * It recognizes some command line options to specify the new desired size, 1891102231Strhodes * and it does some basic checkings. The old file system size is determined 189269800Stomsoft * and after some more checks like we can really access the new last block 189369800Stomsoft * on the disk etc. we calculate the new parameters for the superblock. After 189469800Stomsoft * having done this we just call growfs() which will do the work. Before 189569800Stomsoft * we finish the only thing left is to update the disklabel. 189669800Stomsoft * We still have to provide support for snapshots. Therefore we first have to 189769800Stomsoft * understand what data structures are always replicated in the snapshot on 189869800Stomsoft * creation, for all other blocks we touch during our procedure, we have to 189969926Stomsoft * keep the old blocks unchanged somewhere available for the snapshots. If we 190069800Stomsoft * are lucky, then we only have to handle our blocks to be relocated in that 190169800Stomsoft * way. 190269800Stomsoft * Also we have to consider in what order we actually update the critical 1903102231Strhodes * data structures of the file system to make sure, that in case of a disaster 190469800Stomsoft * fsck(8) is still able to restore any lost data. 190569926Stomsoft * The foreseen last step then will be to provide for growing even mounted 190669926Stomsoft * file systems. There we have to extend the mount() system call to provide 1907102231Strhodes * userland access to the file system locking facility. 190869800Stomsoft */ 190969800Stomsoftint 191069800Stomsoftmain(int argc, char **argv) 191169800Stomsoft{ 191269800Stomsoft DBG_FUNC("main") 191369926Stomsoft char *device, *special, *cp; 191469800Stomsoft char ch; 191577885Stomsoft unsigned int size=0; 191669800Stomsoft size_t len; 191777885Stomsoft unsigned int Nflag=0; 191869800Stomsoft int ExpertFlag=0; 191969800Stomsoft struct stat st; 192069800Stomsoft struct disklabel *lp; 192169800Stomsoft struct partition *pp; 192298542Smckusick int i,fsi,fso; 192369800Stomsoft char reply[5]; 192469800Stomsoft#ifdef FSMAXSNAP 192569800Stomsoft int j; 192669800Stomsoft#endif /* FSMAXSNAP */ 192769800Stomsoft 192869800Stomsoft DBG_ENTER; 192969800Stomsoft 193069800Stomsoft while((ch=getopt(argc, argv, "Ns:vy")) != -1) { 193169800Stomsoft switch(ch) { 193269800Stomsoft case 'N': 193369800Stomsoft Nflag=1; 193469800Stomsoft break; 193569800Stomsoft case 's': 193669800Stomsoft size=(size_t)atol(optarg); 193769800Stomsoft if(size<1) { 193869926Stomsoft usage(); 193969800Stomsoft } 194069800Stomsoft break; 194169800Stomsoft case 'v': /* for compatibility to newfs */ 194269800Stomsoft break; 194369800Stomsoft case 'y': 194469800Stomsoft ExpertFlag=1; 194569800Stomsoft break; 194669800Stomsoft case '?': 194769800Stomsoft /* FALLTHROUGH */ 194869800Stomsoft default: 194969926Stomsoft usage(); 195069800Stomsoft } 195169800Stomsoft } 195269800Stomsoft argc -= optind; 195369800Stomsoft argv += optind; 195469800Stomsoft 195569800Stomsoft if(argc != 1) { 195669926Stomsoft usage(); 195769800Stomsoft } 195869800Stomsoft device=*argv; 195969800Stomsoft 196069800Stomsoft /* 196169800Stomsoft * Now try to guess the (raw)device name. 196269800Stomsoft */ 196369800Stomsoft if (0 == strrchr(device, '/')) { 196469800Stomsoft /* 196569800Stomsoft * No path prefix was given, so try in that order: 196669800Stomsoft * /dev/r%s 196769800Stomsoft * /dev/%s 196869800Stomsoft * /dev/vinum/r%s 196969800Stomsoft * /dev/vinum/%s. 197069800Stomsoft * 197169800Stomsoft * FreeBSD now doesn't distinguish between raw and block 197269800Stomsoft * devices any longer, but it should still work this way. 197369800Stomsoft */ 197469800Stomsoft len=strlen(device)+strlen(_PATH_DEV)+2+strlen("vinum/"); 197569800Stomsoft special=(char *)malloc(len); 197669926Stomsoft if(special == NULL) { 197769926Stomsoft errx(1, "malloc failed"); 197869926Stomsoft } 197969800Stomsoft snprintf(special, len, "%sr%s", _PATH_DEV, device); 198069800Stomsoft if (stat(special, &st) == -1) { 198169800Stomsoft snprintf(special, len, "%s%s", _PATH_DEV, device); 198269800Stomsoft if (stat(special, &st) == -1) { 198369800Stomsoft snprintf(special, len, "%svinum/r%s", 198469800Stomsoft _PATH_DEV, device); 198569800Stomsoft if (stat(special, &st) == -1) { 198669800Stomsoft /* For now this is the 'last resort' */ 198769800Stomsoft snprintf(special, len, "%svinum/%s", 198869800Stomsoft _PATH_DEV, device); 198969800Stomsoft } 199069800Stomsoft } 199169800Stomsoft } 199269800Stomsoft device = special; 199369800Stomsoft } 199469800Stomsoft 199569800Stomsoft /* 199669800Stomsoft * Try to access our devices for writing ... 199769800Stomsoft */ 199869800Stomsoft if (Nflag) { 199969800Stomsoft fso = -1; 200069800Stomsoft } else { 200169800Stomsoft fso = open(device, O_WRONLY); 200269800Stomsoft if (fso < 0) { 200369926Stomsoft err(1, "%s", device); 200469800Stomsoft } 200569800Stomsoft } 200669800Stomsoft 200769800Stomsoft /* 200869800Stomsoft * ... and reading. 200969800Stomsoft */ 201069800Stomsoft fsi = open(device, O_RDONLY); 201169800Stomsoft if (fsi < 0) { 201269926Stomsoft err(1, "%s", device); 201369800Stomsoft } 201469800Stomsoft 201569800Stomsoft /* 201669800Stomsoft * Try to read a label and gess the slice if not specified. This 201769800Stomsoft * code should guess the right thing and avaid to bother the user 201869800Stomsoft * user with the task of specifying the option -v on vinum volumes. 201969800Stomsoft */ 202069800Stomsoft cp=device+strlen(device)-1; 202169800Stomsoft lp = get_disklabel(fsi); 202269800Stomsoft if(lp->d_type == DTYPE_VINUM) { 202369800Stomsoft pp = &lp->d_partitions[0]; 202469800Stomsoft } else if (isdigit(*cp)) { 202569800Stomsoft pp = &lp->d_partitions[2]; 202669800Stomsoft } else if (*cp>='a' && *cp<='h') { 202769800Stomsoft pp = &lp->d_partitions[*cp - 'a']; 202869800Stomsoft } else { 202969926Stomsoft errx(1, "unknown device"); 203069800Stomsoft } 203169800Stomsoft 203269800Stomsoft /* 2033102231Strhodes * Check if that partition looks suited for growing a file system. 203469800Stomsoft */ 203569800Stomsoft if (pp->p_size < 1) { 203669926Stomsoft errx(1, "partition is unavailable"); 203769800Stomsoft } 203869800Stomsoft if (pp->p_fstype != FS_BSDFFS) { 203969926Stomsoft errx(1, "partition not 4.2BSD"); 204069800Stomsoft } 204169800Stomsoft 204269800Stomsoft /* 204369800Stomsoft * Read the current superblock, and take a backup. 204469800Stomsoft */ 204598542Smckusick for (i = 0; sblock_try[i] != -1; i++) { 204698542Smckusick sblockloc = sblock_try[i] / DEV_BSIZE; 204798542Smckusick rdfs(sblockloc, (size_t)SBLOCKSIZE, (void *)&(osblock), fsi); 204898542Smckusick if ((osblock.fs_magic == FS_UFS1_MAGIC || 204998542Smckusick (osblock.fs_magic == FS_UFS2_MAGIC && 205098542Smckusick osblock.fs_sblockloc == 205198542Smckusick numfrags(&osblock, sblock_try[i]))) && 205298542Smckusick osblock.fs_bsize <= MAXBSIZE && 205398542Smckusick osblock.fs_bsize >= sizeof(struct fs)) 205498542Smckusick break; 205598542Smckusick } 205698542Smckusick if (sblock_try[i] == -1) { 205769926Stomsoft errx(1, "superblock not recognized"); 205869800Stomsoft } 205969800Stomsoft memcpy((void *)&fsun1, (void *)&fsun2, sizeof(fsun2)); 206098542Smckusick maxino = sblock.fs_ncg * sblock.fs_ipg; 206169800Stomsoft 206269800Stomsoft DBG_OPEN("/tmp/growfs.debug"); /* already here we need a superblock */ 206369926Stomsoft DBG_DUMP_FS(&sblock, 206469926Stomsoft "old sblock"); 206569800Stomsoft 206669800Stomsoft /* 206769800Stomsoft * Determine size to grow to. Default to the full size specified in 206869800Stomsoft * the disk label. 206969800Stomsoft */ 207069800Stomsoft sblock.fs_size = dbtofsb(&osblock, pp->p_size); 207169800Stomsoft if (size != 0) { 207269800Stomsoft if (size > pp->p_size){ 207377885Stomsoft errx(1, "There is not enough space (%d < %d)", 207469800Stomsoft pp->p_size, size); 207569800Stomsoft } 207669800Stomsoft sblock.fs_size = dbtofsb(&osblock, size); 207769800Stomsoft } 207869800Stomsoft 207969800Stomsoft /* 208069800Stomsoft * Are we really growing ? 208169800Stomsoft */ 208269800Stomsoft if(osblock.fs_size >= sblock.fs_size) { 208369926Stomsoft errx(1, "we are not growing (%d->%d)", osblock.fs_size, 208469926Stomsoft sblock.fs_size); 208569800Stomsoft } 208669800Stomsoft 208769800Stomsoft 208869800Stomsoft#ifdef FSMAXSNAP 208969800Stomsoft /* 209069800Stomsoft * Check if we find an active snapshot. 209169800Stomsoft */ 209269800Stomsoft if(ExpertFlag == 0) { 209369800Stomsoft for(j=0; j<FSMAXSNAP; j++) { 209469800Stomsoft if(sblock.fs_snapinum[j]) { 2095102231Strhodes errx(1, "active snapshot found in file system\n" 209669800Stomsoft " please remove all snapshots before " 209769800Stomsoft "using growfs\n"); 209869800Stomsoft } 209969800Stomsoft if(!sblock.fs_snapinum[j]) { /* list is dense */ 210069800Stomsoft break; 210169800Stomsoft } 210269800Stomsoft } 210369800Stomsoft } 210469800Stomsoft#endif 210569800Stomsoft 210669800Stomsoft if (ExpertFlag == 0 && Nflag == 0) { 210769800Stomsoft printf("We strongly recommend you to make a backup " 210869800Stomsoft "before growing the Filesystem\n\n" 210969800Stomsoft " Did you backup your data (Yes/No) ? "); 211077885Stomsoft fgets(reply, (int)sizeof(reply), stdin); 211169800Stomsoft if (strcmp(reply, "Yes\n")){ 211269800Stomsoft printf("\n Nothing done \n"); 211369800Stomsoft exit (0); 211469800Stomsoft } 211569800Stomsoft } 211669800Stomsoft 2117102231Strhodes printf("new file systemsize is: %d frags\n", sblock.fs_size); 211869800Stomsoft 211969800Stomsoft /* 2120102231Strhodes * Try to access our new last block in the file system. Even if we 212169800Stomsoft * later on realize we have to abort our operation, on that block 212269800Stomsoft * there should be no data, so we can't destroy something yet. 212369800Stomsoft */ 212498542Smckusick wtfs((ufs2_daddr_t)pp->p_size-1, (size_t)DEV_BSIZE, (void *)&sblock, 212598542Smckusick fso, Nflag); 212669800Stomsoft 212769800Stomsoft /* 212869800Stomsoft * Now calculate new superblock values and check for reasonable 2129102231Strhodes * bound for new file system size: 213069800Stomsoft * fs_size: is derived from label or user input 213169800Stomsoft * fs_dsize: should get updated in the routines creating or 213269800Stomsoft * updating the cylinder groups on the fly 213369800Stomsoft * fs_cstotal: should get updated in the routines creating or 213469800Stomsoft * updating the cylinder groups 213569800Stomsoft */ 213669800Stomsoft 213769800Stomsoft /* 2138102231Strhodes * Update the number of cylinders and cylinder groups in the file system. 213969800Stomsoft */ 214098542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) { 214198542Smckusick sblock.fs_old_ncyl = 214298542Smckusick sblock.fs_size * sblock.fs_old_nspf / sblock.fs_old_spc; 214398542Smckusick if (sblock.fs_size * sblock.fs_old_nspf > 214498542Smckusick sblock.fs_old_ncyl * sblock.fs_old_spc) 214598542Smckusick sblock.fs_old_ncyl++; 214669800Stomsoft } 214798542Smckusick sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg); 214898542Smckusick maxino = sblock.fs_ncg * sblock.fs_ipg; 214969800Stomsoft 215098542Smckusick if (sblock.fs_size % sblock.fs_fpg != 0 && 215198542Smckusick sblock.fs_size % sblock.fs_fpg < cgdmin(&sblock, sblock.fs_ncg)) { 215269800Stomsoft /* 215369800Stomsoft * The space in the new last cylinder group is too small, 215469800Stomsoft * so revert back. 215569800Stomsoft */ 215669800Stomsoft sblock.fs_ncg--; 215798542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 215898542Smckusick sblock.fs_old_ncyl = sblock.fs_ncg * sblock.fs_old_cpg; 215998542Smckusick printf("Warning: %d sector(s) cannot be allocated.\n", 216098542Smckusick fsbtodb(&sblock, sblock.fs_size % sblock.fs_fpg)); 216198542Smckusick sblock.fs_size = sblock.fs_ncg * sblock.fs_fpg; 216269800Stomsoft } 216369800Stomsoft 216469800Stomsoft /* 216569800Stomsoft * Update the space for the cylinder group summary information in the 216669800Stomsoft * respective cylinder group data area. 216769800Stomsoft */ 216869800Stomsoft sblock.fs_cssize = 216969800Stomsoft fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum)); 217069800Stomsoft 217169800Stomsoft if(osblock.fs_size >= sblock.fs_size) { 217269926Stomsoft errx(1, "not enough new space"); 217369800Stomsoft } 217469800Stomsoft 217569800Stomsoft DBG_PRINT0("sblock calculated\n"); 217669800Stomsoft 217769800Stomsoft /* 217869800Stomsoft * Ok, everything prepared, so now let's do the tricks. 217969800Stomsoft */ 218069800Stomsoft growfs(fsi, fso, Nflag); 218169800Stomsoft 218269800Stomsoft /* 218369800Stomsoft * Update the disk label. 218469800Stomsoft */ 218569800Stomsoft pp->p_fsize = sblock.fs_fsize; 218669800Stomsoft pp->p_frag = sblock.fs_frag; 218798542Smckusick pp->p_cpg = sblock.fs_fpg; 218869800Stomsoft 218969800Stomsoft return_disklabel(fso, lp, Nflag); 219069800Stomsoft DBG_PRINT0("label rewritten\n"); 219169800Stomsoft 219269800Stomsoft close(fsi); 219369800Stomsoft if(fso>-1) close(fso); 219469800Stomsoft 219569800Stomsoft DBG_CLOSE; 219669800Stomsoft 219769800Stomsoft DBG_LEAVE; 219869800Stomsoft return 0; 219969800Stomsoft} 220069800Stomsoft 220169800Stomsoft/* ************************************************** return_disklabel ***** */ 220269800Stomsoft/* 220369800Stomsoft * Write the updated disklabel back to disk. 220469800Stomsoft */ 220569800Stomsoftstatic void 220677885Stomsoftreturn_disklabel(int fd, struct disklabel *lp, unsigned int Nflag) 220769800Stomsoft{ 220869800Stomsoft DBG_FUNC("return_disklabel") 220969800Stomsoft u_short sum; 221069800Stomsoft u_short *ptr; 221169800Stomsoft 221269800Stomsoft DBG_ENTER; 221369800Stomsoft 221469800Stomsoft if(!lp) { 221569800Stomsoft DBG_LEAVE; 221669800Stomsoft return; 221769800Stomsoft } 221869800Stomsoft if(!Nflag) { 221969800Stomsoft lp->d_checksum=0; 222069800Stomsoft sum = 0; 222169800Stomsoft ptr=(u_short *)lp; 222269800Stomsoft 222369800Stomsoft /* 222469800Stomsoft * recalculate checksum 222569800Stomsoft */ 222669800Stomsoft while(ptr < (u_short *)&lp->d_partitions[lp->d_npartitions]) { 222769800Stomsoft sum ^= *ptr++; 222869800Stomsoft } 222969800Stomsoft lp->d_checksum=sum; 223069800Stomsoft 223169800Stomsoft if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 223269926Stomsoft errx(1, "DIOCWDINFO failed"); 223369800Stomsoft } 223469800Stomsoft } 223569800Stomsoft free(lp); 223669800Stomsoft 223769800Stomsoft DBG_LEAVE; 223869800Stomsoft return ; 223969800Stomsoft} 224069800Stomsoft 224169800Stomsoft/* ***************************************************** get_disklabel ***** */ 224269800Stomsoft/* 224369800Stomsoft * Read the disklabel from disk. 224469800Stomsoft */ 224569800Stomsoftstatic struct disklabel * 224669800Stomsoftget_disklabel(int fd) 224769800Stomsoft{ 224869800Stomsoft DBG_FUNC("get_disklabel") 224969800Stomsoft static struct disklabel *lab; 225069800Stomsoft 225169800Stomsoft DBG_ENTER; 225269800Stomsoft 225369800Stomsoft lab=(struct disklabel *)malloc(sizeof(struct disklabel)); 225469800Stomsoft if (!lab) { 225569926Stomsoft errx(1, "malloc failed"); 225669800Stomsoft } 225769800Stomsoft if (ioctl(fd, DIOCGDINFO, (char *)lab) < 0) { 225869926Stomsoft errx(1, "DIOCGDINFO failed"); 225969800Stomsoft } 226069800Stomsoft 226169800Stomsoft DBG_LEAVE; 226269800Stomsoft return (lab); 226369800Stomsoft} 226469800Stomsoft 226569800Stomsoft 226669800Stomsoft/* ************************************************************* usage ***** */ 226769800Stomsoft/* 226869800Stomsoft * Dump a line of usage. 226969800Stomsoft */ 227069800Stomsoftstatic void 227169926Stomsoftusage(void) 227269800Stomsoft{ 227369800Stomsoft DBG_FUNC("usage") 227469800Stomsoft 227569800Stomsoft DBG_ENTER; 227669800Stomsoft 227769926Stomsoft fprintf(stderr, "usage: growfs [-Ny] [-s size] special\n"); 227869926Stomsoft 227969800Stomsoft DBG_LEAVE; 228069926Stomsoft exit(1); 228169800Stomsoft} 228269800Stomsoft 228369800Stomsoft/* *********************************************************** updclst ***** */ 228469800Stomsoft/* 228569800Stomsoft * This updates most paramters and the bitmap related to cluster. We have to 228669800Stomsoft * assume, that sblock, osblock, acg are set up. 228769800Stomsoft */ 228869800Stomsoftstatic void 228969800Stomsoftupdclst(int block) 229069800Stomsoft{ 229169800Stomsoft DBG_FUNC("updclst") 229269800Stomsoft static int lcs=0; 229369800Stomsoft 229469800Stomsoft DBG_ENTER; 229569800Stomsoft 229669800Stomsoft if(sblock.fs_contigsumsize < 1) { /* no clustering */ 229769800Stomsoft return; 229869800Stomsoft } 229969800Stomsoft /* 230069800Stomsoft * update cluster allocation map 230169800Stomsoft */ 230269800Stomsoft setbit(cg_clustersfree(&acg), block); 230369800Stomsoft 230469800Stomsoft /* 230569800Stomsoft * update cluster summary table 230669800Stomsoft */ 230769800Stomsoft if(!lcs) { 230869800Stomsoft /* 230969800Stomsoft * calculate size for the trailing cluster 231069800Stomsoft */ 231169800Stomsoft for(block--; lcs<sblock.fs_contigsumsize; block--, lcs++ ) { 231269800Stomsoft if(isclr(cg_clustersfree(&acg), block)){ 231369800Stomsoft break; 231469800Stomsoft } 231569800Stomsoft } 231669800Stomsoft } 231769800Stomsoft if(lcs < sblock.fs_contigsumsize) { 231869800Stomsoft if(lcs) { 231969800Stomsoft cg_clustersum(&acg)[lcs]--; 232069800Stomsoft } 232169800Stomsoft lcs++; 232269800Stomsoft cg_clustersum(&acg)[lcs]++; 232369800Stomsoft } 232469800Stomsoft 232569800Stomsoft DBG_LEAVE; 232669800Stomsoft return; 232769800Stomsoft} 232869800Stomsoft 232969800Stomsoft/* *********************************************************** updrefs ***** */ 233069800Stomsoft/* 233169800Stomsoft * This updates all references to relocated blocks for the given inode. The 233269800Stomsoft * inode is given as number within the cylinder group, and the number of the 233369800Stomsoft * cylinder group. 233469800Stomsoft */ 233569800Stomsoftstatic void 233677885Stomsoftupdrefs(int cg, ino_t in, struct gfs_bpp *bp, int fsi, int fso, unsigned int 233777885Stomsoft Nflag) 233869800Stomsoft{ 233969800Stomsoft DBG_FUNC("updrefs") 234098542Smckusick ufs_lbn_t len, lbn, numblks; 234198542Smckusick ufs2_daddr_t iptr, blksperindir; 234298542Smckusick union dinode *ino; 234398542Smckusick int i, mode, remaining_blocks, inodeupdated; 234469800Stomsoft 234569800Stomsoft DBG_ENTER; 234669800Stomsoft 234769800Stomsoft /* 234898542Smckusick * XXX We should skip unused inodes even from being read from disk 234969800Stomsoft * here by using the bitmap. 235069800Stomsoft */ 235198542Smckusick ino = ginode(in, fsi, cg); 235298542Smckusick mode = DIP(ino, di_mode) & IFMT; 235398542Smckusick if (mode != IFDIR && mode != IFREG && mode != IFLNK) { 235469800Stomsoft DBG_LEAVE; 235569800Stomsoft return; /* only check DIR, FILE, LINK */ 235669800Stomsoft } 235798542Smckusick if (mode == IFLNK && DIP(ino, di_size) < sblock.fs_maxsymlinklen) { 235869800Stomsoft DBG_LEAVE; 235969800Stomsoft return; /* skip short symlinks */ 236069800Stomsoft } 236198542Smckusick numblks = howmany(DIP(ino, di_size), sblock.fs_bsize); 236298542Smckusick if (numblks == 0) { 236369800Stomsoft DBG_LEAVE; 236469800Stomsoft return; /* skip empty file */ 236569800Stomsoft } 236698542Smckusick if (DIP(ino, di_blocks) == 0) { 236769800Stomsoft DBG_LEAVE; 236869800Stomsoft return; /* skip empty swiss cheesy file or old fastlink */ 236969800Stomsoft } 237069926Stomsoft DBG_PRINT2("scg checking inode (%d in %d)\n", 237169926Stomsoft in, 237269926Stomsoft cg); 237369800Stomsoft 237469800Stomsoft /* 237598542Smckusick * Check all the blocks. 237669800Stomsoft */ 237798542Smckusick inodeupdated = 0; 237898542Smckusick len = numblks < NDADDR ? numblks : NDADDR; 237998542Smckusick for (i = 0; i < len; i++) { 238098542Smckusick iptr = DIP(ino, di_db[i]); 238198542Smckusick if (iptr == 0) 238298542Smckusick continue; 238398542Smckusick if (cond_bl_upd(&iptr, bp, fsi, fso, Nflag)) { 238498542Smckusick DIP(ino, di_db[i]) = iptr; 238598542Smckusick inodeupdated++; 238669800Stomsoft } 238769800Stomsoft } 238869800Stomsoft DBG_PRINT0("~~scg direct blocks checked\n"); 238969800Stomsoft 239098542Smckusick blksperindir = 1; 239198542Smckusick len = numblks - NDADDR; 239298542Smckusick lbn = NDADDR; 239398542Smckusick for (i = 0; len > 0 && i < NIADDR; i++) { 239498542Smckusick iptr = DIP(ino, di_ib[i]); 239598542Smckusick if (iptr == 0) 239698542Smckusick continue; 239798542Smckusick if (cond_bl_upd(&iptr, bp, fsi, fso, Nflag)) { 239898542Smckusick DIP(ino, di_ib[i]) = iptr; 239998542Smckusick inodeupdated++; 240069800Stomsoft } 240198542Smckusick indirchk(blksperindir, lbn, iptr, numblks, bp, fsi, fso, Nflag); 240298542Smckusick blksperindir *= NINDIR(&sblock); 240398542Smckusick lbn += blksperindir; 240498542Smckusick len -= blksperindir; 240598542Smckusick DBG_PRINT1("scg indirect_%d blocks checked\n", i + 1); 240669800Stomsoft } 240798542Smckusick if (inodeupdated) 240898542Smckusick wtfs(inoblk, sblock.fs_bsize, inobuf, fso, Nflag); 240969800Stomsoft 241098542Smckusick DBG_LEAVE; 241198542Smckusick return; 241298542Smckusick} 241369800Stomsoft 241498542Smckusick/* 241598542Smckusick * Recursively check all the indirect blocks. 241698542Smckusick */ 241798542Smckusickstatic void 241898542Smckusickindirchk(ufs_lbn_t blksperindir, ufs_lbn_t lbn, ufs2_daddr_t blkno, 241998542Smckusick ufs_lbn_t lastlbn, struct gfs_bpp *bp, int fsi, int fso, unsigned int Nflag) 242098542Smckusick{ 242198542Smckusick DBG_FUNC("indirchk") 242298542Smckusick void *ibuf; 242398542Smckusick off_t offset; 242498542Smckusick int i, last; 242598542Smckusick ufs2_daddr_t iptr; 242698542Smckusick 242798542Smckusick DBG_ENTER; 242898542Smckusick 242998542Smckusick /* read in the indirect block. */ 243098542Smckusick ibuf = malloc(sblock.fs_bsize); 243198542Smckusick if (!ibuf) 243298542Smckusick errx(1, "malloc failed"); 243398542Smckusick rdfs(fsbtodb(&sblock, blkno), (size_t)sblock.fs_bsize, ibuf, fsi); 243498542Smckusick last = howmany(lastlbn - lbn, blksperindir) < NINDIR(&sblock) ? 243598542Smckusick howmany(lastlbn - lbn, blksperindir) : NINDIR(&sblock); 243698542Smckusick for (i = 0; i < last; i++) { 243798542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 243898542Smckusick iptr = ((ufs1_daddr_t *)ibuf)[i]; 243998542Smckusick else 244098542Smckusick iptr = ((ufs2_daddr_t *)ibuf)[i]; 244198542Smckusick if (iptr == 0) 244298542Smckusick continue; 244398542Smckusick if (cond_bl_upd(&iptr, bp, fsi, fso, Nflag)) { 244498542Smckusick if (sblock.fs_magic == FS_UFS1_MAGIC) 244598542Smckusick ((ufs1_daddr_t *)ibuf)[i] = iptr; 244698542Smckusick else 244798542Smckusick ((ufs2_daddr_t *)ibuf)[i] = iptr; 244869800Stomsoft } 244998542Smckusick if (blksperindir == 1) 245098542Smckusick continue; 245198542Smckusick indirchk(blksperindir / NINDIR(&sblock), lbn + blksperindir * i, 245298542Smckusick iptr, lastlbn, bp, fsi, fso, Nflag); 245369800Stomsoft } 245498542Smckusick free(ibuf); 245569800Stomsoft 245669800Stomsoft DBG_LEAVE; 245769800Stomsoft return; 245869800Stomsoft} 2459