1/* $NetBSD: utilities.c,v 1.30 2010/01/07 04:21:28 christos Exp $ */ 2 3/* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/param.h> 33#include <sys/time.h> 34#include <sys/mount.h> 35 36#include <ufs/ufs/inode.h> 37#include <ufs/ufs/dir.h> 38#define buf ubuf 39#define vnode uvnode 40#include <ufs/lfs/lfs.h> 41 42#include <err.h> 43#include <stdio.h> 44#include <stdlib.h> 45#include <string.h> 46#include <ctype.h> 47#include <unistd.h> 48#include <errno.h> 49 50#include <signal.h> 51 52#include "bufcache.h" 53#include "vnode.h" 54#include "lfs_user.h" 55#include "segwrite.h" 56 57#include "fsutil.h" 58#include "fsck.h" 59#include "extern.h" 60#include "exitvalues.h" 61 62long diskreads, totalreads; /* Disk cache statistics */ 63 64extern off_t locked_queue_bytes; 65 66int 67ftypeok(struct ufs1_dinode * dp) 68{ 69 switch (dp->di_mode & IFMT) { 70 71 case IFDIR: 72 case IFREG: 73 case IFBLK: 74 case IFCHR: 75 case IFLNK: 76 case IFSOCK: 77 case IFIFO: 78 return (1); 79 80 default: 81 if (debug) 82 pwarn("bad file type 0%o\n", dp->di_mode); 83 return (0); 84 } 85} 86 87int 88reply(const char *question) 89{ 90 int persevere; 91 char c; 92 93 if (preen) 94 err(1, "INTERNAL ERROR: GOT TO reply()"); 95 persevere = !strcmp(question, "CONTINUE"); 96 pwarn("\n"); 97 if (!persevere && nflag) { 98 printf("%s? no\n\n", question); 99 return (0); 100 } 101 if (yflag || (persevere && nflag)) { 102 printf("%s? yes\n\n", question); 103 return (1); 104 } 105 do { 106 printf("%s? [yn] ", question); 107 (void) fflush(stdout); 108 c = getc(stdin); 109 while (c != '\n' && getc(stdin) != '\n') 110 if (feof(stdin)) 111 return (0); 112 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 113 printf("\n"); 114 if (c == 'y' || c == 'Y') 115 return (1); 116 return (0); 117} 118 119static void 120write_superblocks(void) 121{ 122 if (debug) 123 pwarn("writing superblocks with lfs_idaddr = 0x%x\n", 124 (int)fs->lfs_idaddr); 125 lfs_writesuper(fs, fs->lfs_sboffs[0]); 126 lfs_writesuper(fs, fs->lfs_sboffs[1]); 127 fsmodified = 1; 128} 129 130void 131ckfini(int markclean) 132{ 133 if (locked_queue_bytes > 0) { 134 if (preen || reply("WRITE CHANGES TO DISK") == 1) { 135 if (preen == 0) 136 pwarn("WRITING CHANGES TO DISK\n"); 137 lfs_segwrite(fs, SEGM_CKP); 138 fsdirty = 0; 139 fsmodified = 1; 140 } 141 } 142 143 if (!nflag && (fs->lfs_pflags & LFS_PF_CLEAN) == 0) { 144 fs->lfs_pflags |= LFS_PF_CLEAN; 145 fsmodified = 1; 146 } 147 148 if (fsmodified && (preen || reply("UPDATE SUPERBLOCKS"))) { 149 sbdirty(); 150 write_superblocks(); 151 } 152 if (markclean && fsmodified) { 153 /* 154 * Mark the file system as clean, and sync the superblock. 155 */ 156 if (preen) 157 pwarn("MARKING FILE SYSTEM CLEAN\n"); 158 else if (!reply("MARK FILE SYSTEM CLEAN")) 159 markclean = 0; 160 if (markclean) { 161 fs->lfs_pflags |= LFS_PF_CLEAN; 162 sbdirty(); 163 write_superblocks(); 164 if (!preen) 165 printf( 166 "\n***** FILE SYSTEM MARKED CLEAN *****\n"); 167 } 168 } 169 170 if (debug) 171 bufstats(); 172 (void) close(fsreadfd); 173} 174/* 175 * Free a previously allocated block 176 */ 177void 178freeblk(daddr_t blkno, long frags) 179{ 180 struct inodesc idesc; 181 182 idesc.id_blkno = blkno; 183 idesc.id_numfrags = frags; 184 (void) pass4check(&idesc); 185} 186/* 187 * Find a pathname 188 */ 189void 190getpathname(char *namebuf, size_t namebuflen, ino_t curdir, ino_t ino) 191{ 192 int len; 193 char *cp; 194 struct inodesc idesc; 195 static int busy = 0; 196 197 if (curdir == ino && ino == ROOTINO) { 198 (void) strlcpy(namebuf, "/", namebuflen); 199 return; 200 } 201 if (busy || 202 (statemap[curdir] != DSTATE && statemap[curdir] != DFOUND)) { 203 (void) strlcpy(namebuf, "?", namebuflen); 204 return; 205 } 206 busy = 1; 207 memset(&idesc, 0, sizeof(struct inodesc)); 208 idesc.id_type = DATA; 209 idesc.id_fix = IGNORE; 210 cp = &namebuf[MAXPATHLEN - 1]; 211 *cp = '\0'; 212 if (curdir != ino) { 213 idesc.id_parent = curdir; 214 goto namelookup; 215 } 216 while (ino != ROOTINO) { 217 idesc.id_number = ino; 218 idesc.id_func = findino; 219 idesc.id_name = ".."; 220 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 221 break; 222namelookup: 223 idesc.id_number = idesc.id_parent; 224 idesc.id_parent = ino; 225 idesc.id_func = findname; 226 idesc.id_name = namebuf; 227 if (ginode(idesc.id_number) == NULL) 228 break; 229 if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0) 230 break; 231 len = strlen(namebuf); 232 cp -= len; 233 memcpy(cp, namebuf, (size_t) len); 234 *--cp = '/'; 235 if (cp < &namebuf[LFS_MAXNAMLEN]) 236 break; 237 ino = idesc.id_number; 238 } 239 busy = 0; 240 if (ino != ROOTINO) 241 *--cp = '?'; 242 memcpy(namebuf, cp, (size_t) (&namebuf[MAXPATHLEN] - cp)); 243} 244 245/* 246 * determine whether an inode should be fixed. 247 */ 248int 249dofix(struct inodesc * idesc, const char *msg) 250{ 251 252 switch (idesc->id_fix) { 253 254 case DONTKNOW: 255 if (idesc->id_type == DATA) 256 direrror(idesc->id_number, msg); 257 else 258 pwarn("%s", msg); 259 if (preen) { 260 printf(" (SALVAGED)\n"); 261 idesc->id_fix = FIX; 262 return (ALTERED); 263 } 264 if (reply("SALVAGE") == 0) { 265 idesc->id_fix = NOFIX; 266 return (0); 267 } 268 idesc->id_fix = FIX; 269 return (ALTERED); 270 271 case FIX: 272 return (ALTERED); 273 274 case NOFIX: 275 case IGNORE: 276 return (0); 277 278 default: 279 err(EEXIT, "UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix); 280 } 281 /* NOTREACHED */ 282} 283