1 /* $NetBSD: utilities.c,v 1.35 2013/06/08 02:16:03 dholland 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 40 #include <err.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <ctype.h> 45 #include <unistd.h> 46 #include <errno.h> 47 48 #include <signal.h> 49 50 #include "bufcache.h" 51 #include "vnode.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 60 long diskreads, totalreads; /* Disk cache statistics */ 61 62 extern off_t locked_queue_bytes; 63 64 int 65 ftypeok(struct ulfs1_dinode * dp) 66 { 67 switch (dp->di_mode & LFS_IFMT) { 68 69 case LFS_IFDIR: 70 case LFS_IFREG: 71 case LFS_IFBLK: 72 case LFS_IFCHR: 73 case LFS_IFLNK: 74 case LFS_IFSOCK: 75 case LFS_IFIFO: 76 return (1); 77 78 default: 79 if (debug) 80 pwarn("bad file type 0%o\n", dp->di_mode); 81 return (0); 82 } 83 } 84 85 int 86 reply(const char *question) 87 { 88 int persevere; 89 char c; 90 91 if (preen) 92 err(1, "INTERNAL ERROR: GOT TO reply()"); 93 persevere = !strcmp(question, "CONTINUE"); 94 pwarn("\n"); 95 if (!persevere && nflag) { 96 printf("%s? no\n\n", question); 97 return (0); 98 } 99 if (yflag || (persevere && nflag)) { 100 printf("%s? yes\n\n", question); 101 return (1); 102 } 103 do { 104 printf("%s? [yn] ", question); 105 (void) fflush(stdout); 106 c = getc(stdin); 107 while (c != '\n' && getc(stdin) != '\n') 108 if (feof(stdin)) 109 return (0); 110 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 111 printf("\n"); 112 if (c == 'y' || c == 'Y') 113 return (1); 114 return (0); 115 } 116 117 static void 118 write_superblocks(void) 119 { 120 if (debug) 121 pwarn("writing superblocks with lfs_idaddr = 0x%x\n", 122 (int)fs->lfs_idaddr); 123 lfs_writesuper(fs, fs->lfs_sboffs[0]); 124 lfs_writesuper(fs, fs->lfs_sboffs[1]); 125 fsmodified = 1; 126 } 127 128 void 129 ckfini(int markclean) 130 { 131 if (locked_queue_bytes > 0) { 132 if (preen || reply("WRITE CHANGES TO DISK") == 1) { 133 if (preen == 0) 134 pwarn("WRITING CHANGES TO DISK\n"); 135 lfs_segwrite(fs, SEGM_CKP); 136 fsdirty = 0; 137 fsmodified = 1; 138 } 139 } 140 141 if (!nflag && (fs->lfs_pflags & LFS_PF_CLEAN) == 0) { 142 fs->lfs_pflags |= LFS_PF_CLEAN; 143 fsmodified = 1; 144 } 145 146 if (fsmodified && (preen || reply("UPDATE SUPERBLOCKS"))) { 147 sbdirty(); 148 write_superblocks(); 149 } 150 if (markclean && fsmodified) { 151 /* 152 * Mark the file system as clean, and sync the superblock. 153 */ 154 if (preen) 155 pwarn("MARKING FILE SYSTEM CLEAN\n"); 156 else if (!reply("MARK FILE SYSTEM CLEAN")) 157 markclean = 0; 158 if (markclean) { 159 fs->lfs_pflags |= LFS_PF_CLEAN; 160 sbdirty(); 161 write_superblocks(); 162 if (!preen) 163 printf( 164 "\n***** FILE SYSTEM MARKED CLEAN *****\n"); 165 } 166 } 167 168 if (debug) 169 bufstats(); 170 (void) close(fsreadfd); 171 } 172 /* 173 * Free a previously allocated block 174 */ 175 void 176 freeblk(daddr_t blkno, long frags) 177 { 178 struct inodesc idesc; 179 180 idesc.id_blkno = blkno; 181 idesc.id_numfrags = frags; 182 (void) pass4check(&idesc); 183 } 184 /* 185 * Find a pathname 186 */ 187 void 188 getpathname(char *namebuf, size_t namebuflen, ino_t curdir, ino_t ino) 189 { 190 int len; 191 char *cp; 192 struct inodesc idesc; 193 static int busy = 0; 194 195 if (curdir == ino && ino == ULFS_ROOTINO) { 196 (void) strlcpy(namebuf, "/", namebuflen); 197 return; 198 } 199 if (busy || 200 (statemap[curdir] != DSTATE && statemap[curdir] != DFOUND)) { 201 (void) strlcpy(namebuf, "?", namebuflen); 202 return; 203 } 204 busy = 1; 205 memset(&idesc, 0, sizeof(struct inodesc)); 206 idesc.id_type = DATA; 207 idesc.id_fix = IGNORE; 208 cp = &namebuf[MAXPATHLEN - 1]; 209 *cp = '\0'; 210 if (curdir != ino) { 211 idesc.id_parent = curdir; 212 goto namelookup; 213 } 214 while (ino != ULFS_ROOTINO) { 215 idesc.id_number = ino; 216 idesc.id_func = findino; 217 idesc.id_name = ".."; 218 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 219 break; 220 namelookup: 221 idesc.id_number = idesc.id_parent; 222 idesc.id_parent = ino; 223 idesc.id_func = findname; 224 idesc.id_name = namebuf; 225 if (ginode(idesc.id_number) == NULL) 226 break; 227 if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0) 228 break; 229 len = strlen(namebuf); 230 cp -= len; 231 memcpy(cp, namebuf, (size_t) len); 232 *--cp = '/'; 233 if (cp < &namebuf[LFS_MAXNAMLEN]) 234 break; 235 ino = idesc.id_number; 236 } 237 busy = 0; 238 if (ino != ULFS_ROOTINO) 239 *--cp = '?'; 240 memcpy(namebuf, cp, (size_t) (&namebuf[MAXPATHLEN] - cp)); 241 } 242 243 /* 244 * determine whether an inode should be fixed. 245 */ 246 int 247 dofix(struct inodesc * idesc, const char *msg) 248 { 249 250 switch (idesc->id_fix) { 251 252 case DONTKNOW: 253 if (idesc->id_type == DATA) 254 direrror(idesc->id_number, msg); 255 else 256 pwarn("%s", msg); 257 if (preen) { 258 printf(" (SALVAGED)\n"); 259 idesc->id_fix = FIX; 260 return (ALTERED); 261 } 262 if (reply("SALVAGE") == 0) { 263 idesc->id_fix = NOFIX; 264 return (0); 265 } 266 idesc->id_fix = FIX; 267 return (ALTERED); 268 269 case FIX: 270 return (ALTERED); 271 272 case NOFIX: 273 case IGNORE: 274 return (0); 275 276 default: 277 err(EEXIT, "UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix); 278 } 279 /* NOTREACHED */ 280 } 281