| 1 | #ifndef lint |
| 2 | static char version[] = "@(#)utilities.c 3.1 (Berkeley) %G%"; |
| 3 | #endif |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <ctype.h> |
| 7 | #include <sys/param.h> |
| 8 | #include <sys/inode.h> |
| 9 | #include <sys/fs.h> |
| 10 | #include "fsck.h" |
| 11 | |
| 12 | long lseek(); |
| 13 | |
| 14 | ftypeok(dp) |
| 15 | DINODE *dp; |
| 16 | { |
| 17 | switch (dp->di_mode & IFMT) { |
| 18 | |
| 19 | case IFDIR: |
| 20 | case IFREG: |
| 21 | case IFBLK: |
| 22 | case IFCHR: |
| 23 | case IFLNK: |
| 24 | case IFSOCK: |
| 25 | return (1); |
| 26 | |
| 27 | default: |
| 28 | if (debug) |
| 29 | printf("bad file type 0%o\n", dp->di_mode); |
| 30 | return (0); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | reply(s) |
| 35 | char *s; |
| 36 | { |
| 37 | char line[80]; |
| 38 | |
| 39 | if (preen) |
| 40 | pfatal("INTERNAL ERROR: GOT TO reply()"); |
| 41 | rplyflag = 1; |
| 42 | printf("\n%s? ", s); |
| 43 | if (nflag || dfile.wfdes < 0) { |
| 44 | printf(" no\n\n"); |
| 45 | return (0); |
| 46 | } |
| 47 | if (yflag) { |
| 48 | printf(" yes\n\n"); |
| 49 | return (1); |
| 50 | } |
| 51 | if (getline(stdin, line, sizeof(line)) == EOF) |
| 52 | errexit("\n"); |
| 53 | printf("\n"); |
| 54 | if (line[0] == 'y' || line[0] == 'Y') |
| 55 | return (1); |
| 56 | else |
| 57 | return (0); |
| 58 | } |
| 59 | |
| 60 | getline(fp, loc, maxlen) |
| 61 | FILE *fp; |
| 62 | char *loc; |
| 63 | { |
| 64 | register n; |
| 65 | register char *p, *lastloc; |
| 66 | |
| 67 | p = loc; |
| 68 | lastloc = &p[maxlen-1]; |
| 69 | while ((n = getc(fp)) != '\n') { |
| 70 | if (n == EOF) |
| 71 | return (EOF); |
| 72 | if (!isspace(n) && p < lastloc) |
| 73 | *p++ = n; |
| 74 | } |
| 75 | *p = 0; |
| 76 | return (p - loc); |
| 77 | } |
| 78 | |
| 79 | BUFAREA * |
| 80 | getblk(bp, blk, size) |
| 81 | register BUFAREA *bp; |
| 82 | daddr_t blk; |
| 83 | long size; |
| 84 | { |
| 85 | register struct filecntl *fcp; |
| 86 | daddr_t dblk; |
| 87 | |
| 88 | fcp = &dfile; |
| 89 | dblk = fsbtodb(&sblock, blk); |
| 90 | if (bp->b_bno == dblk) |
| 91 | return (bp); |
| 92 | flush(fcp, bp); |
| 93 | if (bread(fcp, bp->b_un.b_buf, dblk, size) != 0) { |
| 94 | bp->b_bno = dblk; |
| 95 | bp->b_size = size; |
| 96 | return (bp); |
| 97 | } |
| 98 | bp->b_bno = (daddr_t)-1; |
| 99 | return (NULL); |
| 100 | } |
| 101 | |
| 102 | flush(fcp, bp) |
| 103 | struct filecntl *fcp; |
| 104 | register BUFAREA *bp; |
| 105 | { |
| 106 | |
| 107 | if (bp->b_dirty) |
| 108 | (void)bwrite(fcp, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); |
| 109 | bp->b_dirty = 0; |
| 110 | } |
| 111 | |
| 112 | rwerr(s, blk) |
| 113 | char *s; |
| 114 | daddr_t blk; |
| 115 | { |
| 116 | |
| 117 | if (preen == 0) |
| 118 | printf("\n"); |
| 119 | pfatal("CANNOT %s: BLK %ld", s, blk); |
| 120 | if (reply("CONTINUE") == 0) |
| 121 | errexit("Program terminated\n"); |
| 122 | } |
| 123 | |
| 124 | ckfini() |
| 125 | { |
| 126 | |
| 127 | flush(&dfile, &fileblk); |
| 128 | flush(&dfile, &sblk); |
| 129 | if (sblk.b_bno != SBLOCK) { |
| 130 | sblk.b_bno = SBLOCK; |
| 131 | sbdirty(); |
| 132 | flush(&dfile, &sblk); |
| 133 | } |
| 134 | flush(&dfile, &inoblk); |
| 135 | (void)close(dfile.rfdes); |
| 136 | (void)close(dfile.wfdes); |
| 137 | } |
| 138 | |
| 139 | bread(fcp, buf, blk, size) |
| 140 | register struct filecntl *fcp; |
| 141 | char *buf; |
| 142 | daddr_t blk; |
| 143 | long size; |
| 144 | { |
| 145 | if (lseek(fcp->rfdes, (long)dbtob(blk), 0) < 0) |
| 146 | rwerr("SEEK", blk); |
| 147 | else if (read(fcp->rfdes, buf, (int)size) == size) |
| 148 | return (1); |
| 149 | rwerr("READ", blk); |
| 150 | return (0); |
| 151 | } |
| 152 | |
| 153 | bwrite(fcp, buf, blk, size) |
| 154 | register struct filecntl *fcp; |
| 155 | char *buf; |
| 156 | daddr_t blk; |
| 157 | long size; |
| 158 | { |
| 159 | |
| 160 | if (fcp->wfdes < 0) |
| 161 | return (0); |
| 162 | if (lseek(fcp->wfdes, (long)dbtob(blk), 0) < 0) |
| 163 | rwerr("SEEK", blk); |
| 164 | else if (write(fcp->wfdes, buf, (int)size) == size) { |
| 165 | fcp->mod = 1; |
| 166 | return (1); |
| 167 | } |
| 168 | rwerr("WRITE", blk); |
| 169 | return (0); |
| 170 | } |
| 171 | |
| 172 | catch() |
| 173 | { |
| 174 | |
| 175 | ckfini(); |
| 176 | exit(12); |
| 177 | } |
| 178 | |
| 179 | /* |
| 180 | * determine whether an inode should be fixed. |
| 181 | */ |
| 182 | dofix(idesc) |
| 183 | register struct inodesc *idesc; |
| 184 | { |
| 185 | |
| 186 | switch (idesc->id_fix) { |
| 187 | |
| 188 | case DONTKNOW: |
| 189 | direrr(idesc->id_number, "DIRECTORY CORRUPTED"); |
| 190 | if (reply("SALVAGE") == 0) { |
| 191 | idesc->id_fix = NOFIX; |
| 192 | return (0); |
| 193 | } |
| 194 | idesc->id_fix = FIX; |
| 195 | return (ALTERED); |
| 196 | |
| 197 | case FIX: |
| 198 | return (ALTERED); |
| 199 | |
| 200 | case NOFIX: |
| 201 | return (0); |
| 202 | |
| 203 | default: |
| 204 | errexit("UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix); |
| 205 | } |
| 206 | /* NOTREACHED */ |
| 207 | } |
| 208 | |
| 209 | /* VARARGS1 */ |
| 210 | error(s1, s2, s3, s4) |
| 211 | char *s1; |
| 212 | { |
| 213 | |
| 214 | printf(s1, s2, s3, s4); |
| 215 | } |
| 216 | |
| 217 | /* VARARGS1 */ |
| 218 | errexit(s1, s2, s3, s4) |
| 219 | char *s1; |
| 220 | { |
| 221 | error(s1, s2, s3, s4); |
| 222 | exit(8); |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * An inconsistency occured which shouldn't during normal operations. |
| 227 | * Die if preening, otherwise just printf. |
| 228 | */ |
| 229 | /* VARARGS1 */ |
| 230 | pfatal(s, a1, a2, a3) |
| 231 | char *s; |
| 232 | { |
| 233 | |
| 234 | if (preen) { |
| 235 | printf("%s: ", devname); |
| 236 | printf(s, a1, a2, a3); |
| 237 | printf("\n"); |
| 238 | preendie(); |
| 239 | } |
| 240 | printf(s, a1, a2, a3); |
| 241 | } |
| 242 | |
| 243 | preendie() |
| 244 | { |
| 245 | |
| 246 | printf("%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", devname); |
| 247 | exit(8); |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | * Pwarn is like printf when not preening, |
| 252 | * or a warning (preceded by filename) when preening. |
| 253 | */ |
| 254 | /* VARARGS1 */ |
| 255 | pwarn(s, a1, a2, a3, a4, a5, a6) |
| 256 | char *s; |
| 257 | { |
| 258 | |
| 259 | if (preen) |
| 260 | printf("%s: ", devname); |
| 261 | printf(s, a1, a2, a3, a4, a5, a6); |
| 262 | } |
| 263 | |
| 264 | #ifndef lint |
| 265 | /* |
| 266 | * Stub for routines from kernel. |
| 267 | */ |
| 268 | panic(s) |
| 269 | char *s; |
| 270 | { |
| 271 | |
| 272 | pfatal("INTERNAL INCONSISTENCY: %s\n", s); |
| 273 | exit(12); |
| 274 | } |
| 275 | #endif |