/* $NetBSD: pass5.c,v 1.20 2012/08/26 09:33:18 dholland Exp $ */ /* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1997 Manuel Bouyer. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)pass5.c 8.6 (Berkeley) 11/30/94"; #else __RCSID("$NetBSD: pass5.c,v 1.20 2012/08/26 09:33:18 dholland Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include "fsutil.h" #include "fsck.h" #include "extern.h" static void print_bmap(char *, uint32_t); void pass5(void) { int c; struct m_ext2fs *fs = &sblock; daddr_t dbase, dmax; daddr_t d; uint32_t i, j; struct inodesc idesc[3]; struct bufarea *ino_bitmap = NULL, *blk_bitmap = NULL; char *ibmap, *bbmap; u_int32_t cs_ndir, cs_nbfree, cs_nifree; char msg[255]; cs_ndir = 0; cs_nbfree = 0; cs_nifree = 0; ibmap = malloc(fs->e2fs_bsize); bbmap = malloc(fs->e2fs_bsize); if (ibmap == NULL || bbmap == NULL) { errexit("out of memory"); } for (c = 0; c < fs->e2fs_ncg; c++) { u_int32_t nbfree = 0; u_int32_t nifree = 0; u_int32_t ndirs = 0; nbfree = 0; nifree = fs->e2fs.e2fs_ipg; ndirs = 0; if (blk_bitmap == NULL) { blk_bitmap = getdatablk(fs2h32(fs->e2fs_gd[c].ext2bgd_b_bitmap), fs->e2fs_bsize); } else { getblk(blk_bitmap, fs2h32(fs->e2fs_gd[c].ext2bgd_b_bitmap), fs->e2fs_bsize); } if (ino_bitmap == NULL) { ino_bitmap = getdatablk(fs2h32(fs->e2fs_gd[c].ext2bgd_i_bitmap), fs->e2fs_bsize); } else { getblk(ino_bitmap, fs2h32(fs->e2fs_gd[c].ext2bgd_i_bitmap), fs->e2fs_bsize); } memset(bbmap, 0, fs->e2fs_bsize); memset(ibmap, 0, fs->e2fs_bsize); memset(&idesc[0], 0, sizeof idesc); for (i = 0; i < 3; i++) { idesc[i].id_type = ADDR; } j = fs->e2fs.e2fs_ipg * c + 1; for (i = 0; i < fs->e2fs.e2fs_ipg; j++, i++) { if ((j < EXT2_FIRSTINO) && (j != EXT2_ROOTINO)) { setbit(ibmap, i); nifree--; continue; } if (j > fs->e2fs.e2fs_icount) { setbit(ibmap, i); continue; } switch (statemap[j]) { case USTATE: break; case DSTATE: case DCLEAR: case DFOUND: ndirs++; /* fall through */ case FSTATE: case FCLEAR: nifree--; setbit(ibmap, i); break; default: errexit("BAD STATE %d FOR INODE I=%"PRIu32, statemap[j], j); } } /* fill in unused par of the inode map */ for (i = fs->e2fs.e2fs_ipg / NBBY; i < (uint32_t)fs->e2fs_bsize; i++) ibmap[i] = 0xff; dbase = c * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock; dmax = (c+1) * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock; for (i = 0, d = dbase; d < dmax; d ++, i ++) { if (testbmap(d) || d >= sblock.e2fs.e2fs_bcount) { setbit(bbmap, i); continue; } else { nbfree++; } } cs_nbfree += nbfree; cs_nifree += nifree; cs_ndir += ndirs; if (debug && (fs2h16(fs->e2fs_gd[c].ext2bgd_nbfree) != nbfree || fs2h16(fs->e2fs_gd[c].ext2bgd_nifree) != nifree || fs2h16(fs->e2fs_gd[c].ext2bgd_ndirs) != ndirs)) { printf("summary info for cg %d is %d, %d, %d," "should be %d, %d, %d\n", c, fs2h16(fs->e2fs_gd[c].ext2bgd_nbfree), fs2h16(fs->e2fs_gd[c].ext2bgd_nifree), fs2h16(fs->e2fs_gd[c].ext2bgd_ndirs), nbfree, nifree, ndirs); } (void)snprintf(msg, sizeof(msg), "SUMMARY INFORMATIONS WRONG FOR CG #%d", c); if ((fs2h16(fs->e2fs_gd[c].ext2bgd_nbfree) != nbfree || fs2h16(fs->e2fs_gd[c].ext2bgd_nifree) != nifree || fs2h16(fs->e2fs_gd[c].ext2bgd_ndirs) != ndirs) && dofix(&idesc[0], msg)) { fs->e2fs_gd[c].ext2bgd_nbfree = h2fs16(nbfree); fs->e2fs_gd[c].ext2bgd_nifree = h2fs16(nifree); fs->e2fs_gd[c].ext2bgd_ndirs = h2fs16(ndirs); sbdirty(); } if (debug && memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize)) { printf("blk_bitmap:\n"); print_bmap(blk_bitmap->b_un.b_buf, fs->e2fs_bsize); printf("bbmap:\n"); print_bmap(bbmap, fs->e2fs_bsize); } (void)snprintf(msg, sizeof(msg), "BLK(S) MISSING IN BIT MAPS #%d", c); if (memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize) && dofix(&idesc[1], msg)) { memcpy(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize); dirty(blk_bitmap); } if (debug && memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize)) { printf("ino_bitmap:\n"); print_bmap(ino_bitmap->b_un.b_buf, fs->e2fs_bsize); printf("ibmap:\n"); print_bmap(ibmap, fs->e2fs_bsize); } (void)snprintf(msg, sizeof(msg), "INODE(S) MISSING IN BIT MAPS #%d", c); if (memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize) && dofix(&idesc[1], msg)) { memcpy(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize); dirty(ino_bitmap); } } if (debug && (fs->e2fs.e2fs_fbcount != cs_nbfree || fs->e2fs.e2fs_ficount != cs_nifree)) { printf("summary info bad in superblock: %d, %d should be %d, %d\n", fs->e2fs.e2fs_fbcount, fs->e2fs.e2fs_ficount, cs_nbfree, cs_nifree); } if ((fs->e2fs.e2fs_fbcount != cs_nbfree || fs->e2fs.e2fs_ficount != cs_nifree) && dofix(&idesc[0], "SUPERBLK SUMMARY INFORMATION BAD")) { fs->e2fs.e2fs_fbcount = cs_nbfree; fs->e2fs.e2fs_ficount = cs_nifree; sbdirty(); } free(ibmap); free(bbmap); } static void print_bmap(char *map, uint32_t size) { uint32_t i, j; i = 0; while (i < size) { printf("%04x: ",i); for (j = 0; j < 16; j++, i++) printf("%02x ", (unsigned char)map[i] & 0xff); printf("\n"); } }