/* $OpenBSD: check.c,v 1.5 1997/03/02 05:25:52 millert Exp $ */ /* $NetBSD: check.c,v 1.6 1997/01/03 14:32:48 ws Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank * Copyright (c) 1995 Martin Husemann * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Martin Husemann * and Wolfgang Solfrank. * 4. 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 AUTHORS ``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 AUTHORS 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. */ #ifndef lint static char rcsid[] = "$OpenBSD: check.c,v 1.5 1997/03/02 05:25:52 millert Exp $"; #endif /* not lint */ #include #include #include #include #include #include #include "ext.h" int checkfilesys(fname) const char *fname; { int dosfs; struct bootblock boot; struct fatEntry * fat = NULL; int i; int mod = 0; rdonly = alwaysno; if (!preen) printf("** %s", fname); dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0); if (dosfs < 0 && !rdonly) { dosfs = open(fname, O_RDONLY, 0); if (dosfs >= 0) pwarn(" (NO WRITE)\n"); else if (!preen) printf("\n"); rdonly = 1; } else if (!preen) printf("\n"); if (dosfs < 0) { perror("Can't open"); return (8); } if (readboot(dosfs, &boot) != FSOK) { (void)close(dosfs); return (8); } if (!preen) printf("** Phase 1 - Read and Compare FATs\n"); for (i = 0; i < boot.FATs; i++) { struct fatEntry *currentFat; mod |= readfat(dosfs, &boot, i, ¤tFat); if (mod & FSFATAL) { if (fat) free(fat); (void)close(dosfs); return (8); } if (fat == NULL) fat = currentFat; else { mod |= comparefat(&boot, fat, currentFat, i + 1); free(currentFat); if (mod & FSFATAL) { free(fat); (void)close(dosfs); return (8); } } } if (!preen) printf("** Phase 2 - Check Cluster Chains\n"); mod |= checkfat(&boot, fat); if (mod & FSFATAL) { free(fat); (void)close(dosfs); return (8); } if (mod & FSFATMOD) mod |= writefat(dosfs, &boot, fat); /* delay writing fats? XXX */ if (mod & FSFATAL) { free(fat); (void)close(dosfs); return (8); } if (!preen) printf("** Phase 3 - Checking Directories\n"); if (resetDosDirSection(&boot) & FSFATAL) { free(fat); (void)close(dosfs); return (8); } mod |= handleDirTree(dosfs, &boot, fat); if (mod & FSFATAL) { finishDosDirSection(); free(fat); (void)close(dosfs); return (8); } if (!preen) printf("** Phase 4 - Checking for Lost Files\n"); mod |= checklost(dosfs, &boot, fat); finishDosDirSection(); free(fat); (void)close(dosfs); if (boot.NumBad) pwarn("%d files, %d free (%d clusters), %d bad (%d clusters)\n", boot.NumFiles, boot.NumFree * boot.ClusterSize / 1024, boot.NumFree, boot.NumBad * boot.ClusterSize / 1024, boot.NumBad); else pwarn("%d files, %d free (%d clusters)\n", boot.NumFiles, boot.NumFree * boot.ClusterSize / 1024, boot.NumFree); if (mod & (FSFATAL | FSERROR)) return (8); if (mod) { pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); return (4); } return (0); }