1/* $NetBSD: utilities.c,v 1.42 2020/04/03 19:36:33 joerg 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#define buf ubuf 37#define vnode uvnode 38#include <ufs/lfs/lfs.h> 39#include <ufs/lfs/lfs_accessors.h> 40 41#include <err.h> 42#include <stdio.h> 43#include <stdlib.h> 44#include <string.h> 45#include <ctype.h> 46#include <unistd.h> 47#include <errno.h> 48 49#include <signal.h> 50 51#include "bufcache.h" 52#include "lfs_user.h" 53#include "segwrite.h" 54 55#include "fsutil.h" 56#include "fsck.h" 57#include "extern.h" 58#include "exitvalues.h" 59 60long diskreads, totalreads; /* Disk cache statistics */ 61 62int 63ftypeok(union lfs_dinode * dp) 64{ 65 switch (lfs_dino_getmode(fs, dp) & LFS_IFMT) { 66 67 case LFS_IFDIR: 68 case LFS_IFREG: 69 case LFS_IFBLK: 70 case LFS_IFCHR: 71 case LFS_IFLNK: 72 case LFS_IFSOCK: 73 case LFS_IFIFO: 74 return (1); 75 76 default: 77 if (debug) 78 pwarn("bad file type 0%o\n", lfs_dino_getmode(fs, dp)); 79 return (0); 80 } 81} 82 83int 84reply(const char *question) 85{ 86 int persevere; 87 char c; 88 89 if (preen) 90 err(EXIT_FAILURE, "INTERNAL ERROR: GOT TO reply()"); 91 persevere = !strcmp(question, "CONTINUE"); 92 pwarn("\n"); 93 if (!persevere && nflag) { 94 printf("%s? no\n\n", question); 95 return (0); 96 } 97 if (yflag || (persevere && nflag)) { 98 printf("%s? yes\n\n", question); 99 return (1); 100 } 101 do { 102 printf("%s? [yn] ", question); 103 (void) fflush(stdout); 104 c = getc(stdin); 105 while (c != '\n' && getc(stdin) != '\n') 106 if (feof(stdin)) 107 return (0); 108 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 109 printf("\n"); 110 if (c == 'y' || c == 'Y') 111 return (1); 112 return (0); 113} 114 115static void 116write_superblocks(void) 117{ 118 if (debug) 119 pwarn("writing superblocks with lfs_idaddr = 0x%jx\n", 120 (uintmax_t)lfs_sb_getidaddr(fs)); 121 lfs_writesuper(fs, lfs_sb_getsboff(fs, 0)); 122 lfs_writesuper(fs, lfs_sb_getsboff(fs, 1)); 123 fsmodified = 1; 124} 125 126void 127ckfini(int markclean) 128{ 129 if (locked_queue_bytes > 0) { 130 if (preen || reply("WRITE CHANGES TO DISK") == 1) { 131 if (preen == 0) 132 pwarn("WRITING CHANGES TO DISK\n"); 133 lfs_segwrite(fs, SEGM_CKP); 134 fsdirty = 0; 135 fsmodified = 1; 136 } 137 } 138 139 if (!nflag && (lfs_sb_getpflags(fs) & LFS_PF_CLEAN) == 0) { 140 lfs_sb_setpflags(fs, lfs_sb_getpflags(fs) | LFS_PF_CLEAN); 141 fsmodified = 1; 142 } 143 144 if (fsmodified && (preen || reply("UPDATE SUPERBLOCKS"))) { 145 sbdirty(); 146 write_superblocks(); 147 } 148 if (markclean && fsmodified) { 149 /* 150 * Mark the file system as clean, and sync the superblock. 151 */ 152 if (preen) 153 pwarn("MARKING FILE SYSTEM CLEAN\n"); 154 else if (!reply("MARK FILE SYSTEM CLEAN")) 155 markclean = 0; 156 if (markclean) { 157 lfs_sb_setpflags(fs, lfs_sb_getpflags(fs) | LFS_PF_CLEAN); 158 sbdirty(); 159 write_superblocks(); 160 if (!preen) 161 printf( 162 "\n***** FILE SYSTEM MARKED CLEAN *****\n"); 163 } 164 } 165 166 if (debug) 167 bufstats(); 168 (void) close(fsreadfd); 169} 170/* 171 * Free a previously allocated block 172 */ 173void 174freeblk(daddr_t blkno, long frags) 175{ 176 struct inodesc idesc; 177 178 idesc.id_blkno = blkno; 179 idesc.id_numfrags = frags; 180 (void) pass4check(&idesc); 181} 182/* 183 * Find a pathname 184 */ 185void 186getpathname(char *namebuf, size_t namebuflen, ino_t curdir, ino_t ino) 187{ 188 int len; 189 char *cp; 190 struct inodesc idesc; 191 static int busy = 0; 192 193 if (curdir == ino && ino == ULFS_ROOTINO) { 194 (void) strlcpy(namebuf, "/", namebuflen); 195 return; 196 } 197 if (busy || 198 (statemap[curdir] != DSTATE && statemap[curdir] != DFOUND)) { 199 (void) strlcpy(namebuf, "?", namebuflen); 200 return; 201 } 202 busy = 1; 203 memset(&idesc, 0, sizeof(struct inodesc)); 204 idesc.id_type = DATA; 205 idesc.id_fix = IGNORE; 206 cp = &namebuf[MAXPATHLEN - 1]; 207 *cp = '\0'; 208 if (curdir != ino) { 209 idesc.id_parent = curdir; 210 goto namelookup; 211 } 212 while (ino != ULFS_ROOTINO) { 213 idesc.id_number = ino; 214 idesc.id_func = findino; 215 idesc.id_name = ".."; 216 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 217 break; 218namelookup: 219 idesc.id_number = idesc.id_parent; 220 idesc.id_parent = ino; 221 idesc.id_func = findname; 222 idesc.id_name = namebuf; 223 if (ginode(idesc.id_number) == NULL) 224 break; 225 if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0) 226 break; 227 len = strlen(namebuf); 228 cp -= len; 229 memcpy(cp, namebuf, (size_t) len); 230 *--cp = '/'; 231 if (cp < &namebuf[LFS_MAXNAMLEN]) 232 break; 233 ino = idesc.id_number; 234 } 235 busy = 0; 236 if (ino != ULFS_ROOTINO) 237 *--cp = '?'; 238 memcpy(namebuf, cp, (size_t) (&namebuf[MAXPATHLEN] - cp)); 239} 240 241/* 242 * determine whether an inode should be fixed. 243 */ 244int 245dofix(struct inodesc * idesc, const char *msg) 246{ 247 248 switch (idesc->id_fix) { 249 250 case DONTKNOW: 251 if (idesc->id_type == DATA) 252 direrror(idesc->id_number, msg); 253 else 254 pwarn("%s", msg); 255 if (preen) { 256 printf(" (SALVAGED)\n"); 257 idesc->id_fix = FIX; 258 return (ALTERED); 259 } 260 if (reply("SALVAGE") == 0) { 261 idesc->id_fix = NOFIX; 262 return (0); 263 } 264 idesc->id_fix = FIX; 265 return (ALTERED); 266 267 case FIX: 268 return (ALTERED); 269 270 case NOFIX: 271 case IGNORE: 272 return (0); 273 274 default: 275 err(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); 276 } 277 /* NOTREACHED */ 278} 279