1 /*- 2 * Copyright (c) 1989, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1989, 1992, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)newfs.c 8.2 (Berkeley) 01/13/94"; 16 #endif /* not lint */ 17 18 /* 19 * newfs: friendly front end to mkfs 20 */ 21 #include <sys/param.h> 22 #include <sys/ucred.h> 23 #include <sys/stat.h> 24 #include <sys/ioctl.h> 25 #include <sys/disklabel.h> 26 #include <sys/file.h> 27 #include <sys/mount.h> 28 29 #include <ufs/ufs/dir.h> 30 #include <ufs/ufs/dinode.h> 31 #include <ufs/ffs/fs.h> 32 33 #include <errno.h> 34 #include <unistd.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <ctype.h> 38 #include <string.h> 39 #include <paths.h> 40 #include "config.h" 41 #include "extern.h" 42 43 #define COMPAT /* allow non-labeled disks */ 44 45 int mfs; /* run as the memory based filesystem */ 46 int Nflag; /* run without writing file system */ 47 int fssize; /* file system size */ 48 int ntracks; /* # tracks/cylinder */ 49 int nsectors; /* # sectors/track */ 50 int nphyssectors; /* # sectors/track including spares */ 51 int secpercyl; /* sectors per cylinder */ 52 int trackspares = -1; /* spare sectors per track */ 53 int cylspares = -1; /* spare sectors per cylinder */ 54 int sectorsize; /* bytes/sector */ 55 #ifdef tahoe 56 int realsectorsize; /* bytes/sector in hardware */ 57 #endif 58 int rpm; /* revolutions/minute of drive */ 59 int interleave; /* hardware sector interleave */ 60 int trackskew = -1; /* sector 0 skew, per track */ 61 int headswitch; /* head switch time, usec */ 62 int trackseek; /* track-to-track seek, usec */ 63 int fsize = 0; /* fragment size */ 64 int bsize = 0; /* block size */ 65 int cpg = DESCPG; /* cylinders/cylinder group */ 66 int cpgflg; /* cylinders/cylinder group flag was given */ 67 int minfree = MINFREE; /* free space threshold */ 68 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 69 int density; /* number of bytes per inode */ 70 int maxcontig = MAXCONTIG; /* max contiguous blocks to allocate */ 71 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 72 int maxbpg; /* maximum blocks per file in a cyl group */ 73 int nrpos = NRPOS; /* # of distinguished rotational positions */ 74 int bbsize = BBSIZE; /* boot block size */ 75 int sbsize = SBSIZE; /* superblock size */ 76 int mntflags; /* flags to be passed to mount */ 77 u_long memleft; /* virtual memory available */ 78 caddr_t membase; /* start address of memory based filesystem */ 79 #ifdef COMPAT 80 char *disktype; 81 int unlabeled; 82 #endif 83 84 char device[MAXPATHLEN]; 85 char *progname, *special; 86 87 static struct disklabel *getdisklabel __P((char *, int)); 88 static struct disklabel *debug_readlabel __P((int)); 89 static void rewritelabel __P((char *, int, struct disklabel *)); 90 static void usage __P((void)); 91 92 int 93 main(argc, argv) 94 int argc; 95 char *argv[]; 96 { 97 register int ch; 98 register struct partition *pp; 99 register struct disklabel *lp; 100 struct partition oldpartition; 101 struct stat st; 102 int debug, lfs, fsi, fso, segsize; 103 char *cp, *opstring; 104 105 if (progname = rindex(*argv, '/')) 106 ++progname; 107 else 108 progname = *argv; 109 110 if (strstr(progname, "mfs")) { 111 mfs = 1; 112 Nflag++; 113 } 114 115 /* -F is mfs only and MUST come first! */ 116 opstring = "F:B:DLNS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:"; 117 if (!mfs) 118 opstring += 2; 119 120 debug = lfs = segsize = 0; 121 while ((ch = getopt(argc, argv, opstring)) != EOF) 122 switch(ch) { 123 case 'B': /* LFS segment size */ 124 if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE) 125 fatal("%s: bad segment size", optarg); 126 break; 127 case 'D': 128 debug = 1; 129 break; 130 case 'F': 131 if ((mntflags = atoi(optarg)) == 0) 132 fatal("%s: bad mount flags", optarg); 133 break; 134 case 'L': /* Create lfs */ 135 lfs = 1; 136 break; 137 case 'N': 138 Nflag++; 139 break; 140 case 'S': 141 if ((sectorsize = atoi(optarg)) <= 0) 142 fatal("%s: bad sector size", optarg); 143 break; 144 #ifdef COMPAT 145 case 'T': 146 disktype = optarg; 147 break; 148 #endif 149 case 'a': 150 if ((maxcontig = atoi(optarg)) <= 0) 151 fatal("%s: bad max contiguous blocks\n", 152 optarg); 153 break; 154 case 'b': /* used for LFS */ 155 if ((bsize = atoi(optarg)) < LFS_MINBLOCKSIZE) 156 fatal("%s: bad block size", optarg); 157 break; 158 case 'c': 159 if ((cpg = atoi(optarg)) <= 0) 160 fatal("%s: bad cylinders/group", optarg); 161 cpgflg++; 162 break; 163 case 'd': 164 if ((rotdelay = atoi(optarg)) < 0) 165 fatal("%s: bad rotational delay\n", optarg); 166 break; 167 case 'e': 168 if ((maxbpg = atoi(optarg)) <= 0) 169 fatal("%s: bad blocks per file in a cyl group\n", 170 optarg); 171 break; 172 case 'f': 173 if ((fsize = atoi(optarg)) <= 0) 174 fatal("%s: bad frag size", optarg); 175 break; 176 case 'i': 177 if ((density = atoi(optarg)) <= 0) 178 fatal("%s: bad bytes per inode\n", optarg); 179 break; 180 case 'k': 181 if ((trackskew = atoi(optarg)) < 0) 182 fatal("%s: bad track skew", optarg); 183 break; 184 case 'l': 185 if ((interleave = atoi(optarg)) <= 0) 186 fatal("%s: bad interleave", optarg); 187 break; 188 case 'm': /* used for LFS */ 189 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 190 fatal("%s: bad free space %%\n", optarg); 191 break; 192 case 'n': 193 if ((nrpos = atoi(optarg)) <= 0) 194 fatal("%s: bad rotational layout count\n", 195 optarg); 196 break; 197 case 'o': 198 if (strcmp(optarg, "space") == 0) 199 opt = FS_OPTSPACE; 200 else if (strcmp(optarg, "time") == 0) 201 opt = FS_OPTTIME; 202 else 203 fatal("%s: bad optimization preference %s", 204 optarg, "(options are `space' or `time')"); 205 break; 206 case 'p': 207 if ((trackspares = atoi(optarg)) < 0) 208 fatal("%s: bad spare sectors per track", 209 optarg); 210 break; 211 case 'r': 212 if ((rpm = atoi(optarg)) <= 0) 213 fatal("%s: bad revs/minute\n", optarg); 214 break; 215 case 's': /* used for LFS */ 216 if ((fssize = atoi(optarg)) <= 0) 217 fatal("%s: bad file system size", optarg); 218 break; 219 case 't': 220 if ((ntracks = atoi(optarg)) <= 0) 221 fatal("%s: bad total tracks", optarg); 222 break; 223 case 'u': 224 if ((nsectors = atoi(optarg)) <= 0) 225 fatal("%s: bad sectors/track", optarg); 226 break; 227 case 'x': 228 if ((cylspares = atoi(optarg)) < 0) 229 fatal("%s: bad spare sectors per cylinder", 230 optarg); 231 break; 232 case '?': 233 default: 234 usage(); 235 } 236 argc -= optind; 237 argv += optind; 238 239 if (argc != 2 && (mfs || argc != 1)) 240 usage(); 241 242 /* 243 * If the -N flag isn't specified, open the output file. If no path 244 * prefix, try /dev/r%s and then /dev/%s. 245 */ 246 special = argv[0]; 247 if (index(special, '/') == NULL) { 248 (void)sprintf(device, "%sr%s", _PATH_DEV, special); 249 if (stat(device, &st) == -1) 250 (void)sprintf(device, "%s%s", _PATH_DEV, special); 251 special = device; 252 } 253 if (!Nflag) { 254 fso = open(special, 255 (debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE); 256 if (fso < 0) 257 fatal("%s: %s", special, strerror(errno)); 258 } else 259 fso = -1; 260 261 /* Open the input file. */ 262 fsi = open(special, O_RDONLY); 263 if (fsi < 0) 264 fatal("%s: %s", special, strerror(errno)); 265 if (fstat(fsi, &st) < 0) 266 fatal("%s: %s", special, strerror(errno)); 267 268 if (!debug && !mfs && !S_ISCHR(st.st_mode)) 269 (void)printf("%s: %s: not a character-special device\n", 270 progname, special); 271 cp = index(argv[0], '\0') - 1; 272 if (!debug && (cp == 0 || (*cp < 'a' || *cp > 'h') && !isdigit(*cp))) 273 fatal("%s: can't figure out file system partition", argv[0]); 274 275 #ifdef COMPAT 276 if (!mfs && disktype == NULL) 277 disktype = argv[1]; 278 #endif 279 if (debug) 280 lp = debug_readlabel(fsi); 281 else 282 lp = getdisklabel(special, fsi); 283 284 if (isdigit(*cp)) 285 pp = &lp->d_partitions[0]; 286 else 287 pp = &lp->d_partitions[*cp - 'a']; 288 if (pp->p_size == 0) 289 fatal("%s: `%c' partition is unavailable", argv[0], *cp); 290 291 /* If we're making a LFS, we break out here */ 292 exit(make_lfs(fso, lp, pp, minfree, bsize, segsize)); 293 } 294 295 #ifdef COMPAT 296 char lmsg[] = "%s: can't read disk label; disk type must be specified"; 297 #else 298 char lmsg[] = "%s: can't read disk label"; 299 #endif 300 301 static struct disklabel * 302 getdisklabel(s, fd) 303 char *s; 304 int fd; 305 { 306 static struct disklabel lab; 307 308 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { 309 #ifdef COMPAT 310 if (disktype) { 311 struct disklabel *lp, *getdiskbyname(); 312 313 unlabeled++; 314 lp = getdiskbyname(disktype); 315 if (lp == NULL) 316 fatal("%s: unknown disk type", disktype); 317 return (lp); 318 } 319 #endif 320 (void)fprintf(stderr, 321 "%s: ioctl (GDINFO): %s\n", progname, strerror(errno)); 322 fatal(lmsg, s); 323 } 324 return (&lab); 325 } 326 327 328 static struct disklabel * 329 debug_readlabel(fd) 330 int fd; 331 { 332 static struct disklabel lab; 333 int n; 334 335 if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0) 336 fatal("unable to read disk label: %s", strerror(errno)); 337 else if (n < sizeof(struct disklabel)) 338 fatal("short read of disklabel: %d of %d bytes", n, 339 sizeof(struct disklabel)); 340 return(&lab); 341 } 342 343 static void 344 rewritelabel(s, fd, lp) 345 char *s; 346 int fd; 347 register struct disklabel *lp; 348 { 349 #ifdef COMPAT 350 if (unlabeled) 351 return; 352 #endif 353 lp->d_checksum = 0; 354 lp->d_checksum = dkcksum(lp); 355 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 356 (void)fprintf(stderr, 357 "%s: ioctl (WDINFO): %s\n", progname, strerror(errno)); 358 fatal("%s: can't rewrite disk label", s); 359 } 360 #if vax 361 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 362 register i; 363 int cfd; 364 daddr_t alt; 365 char specname[64]; 366 char blk[1024]; 367 char *cp; 368 369 /* 370 * Make name for 'c' partition. 371 */ 372 strcpy(specname, s); 373 cp = specname + strlen(specname) - 1; 374 if (!isdigit(*cp)) 375 *cp = 'c'; 376 cfd = open(specname, O_WRONLY); 377 if (cfd < 0) 378 fatal("%s: %s", specname, strerror(errno)); 379 bzero(blk, sizeof(blk)); 380 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 381 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 382 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 383 if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize, 384 L_SET) == -1) 385 fatal("lseek to badsector area: %s", 386 strerror(errno)); 387 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 388 fprintf(stderr, 389 "%s: alternate label %d write: %s\n", 390 progname, i/2, strerror(errno)); 391 } 392 close(cfd); 393 } 394 #endif 395 } 396 397 void 398 usage() 399 { 400 if (mfs) { 401 fprintf(stderr, 402 "usage: mfs [ -fsoptions ] special-device mount-point\n"); 403 } else 404 fprintf(stderr, 405 "usage: newlfs [ -fsoptions ] special-device%s\n", 406 #ifdef COMPAT 407 " [device-type]"); 408 #else 409 ""); 410 #endif 411 fprintf(stderr, "where fsoptions are:\n"); 412 fprintf(stderr, "\t-B LFS segment size\n"); 413 fprintf(stderr, "\t-D debug\n"); 414 fprintf(stderr, "\t-F mount flags\n"); 415 fprintf(stderr, "\t-L create LFS file system\n"); 416 fprintf(stderr, 417 "\t-N do not create file system, just print out parameters\n"); 418 fprintf(stderr, "\t-S sector size\n"); 419 #ifdef COMPAT 420 fprintf(stderr, "\t-T disktype\n"); 421 #endif 422 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 423 fprintf(stderr, "\t-b block size\n"); 424 fprintf(stderr, "\t-c cylinders/group\n"); 425 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 426 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 427 fprintf(stderr, "\t-f frag size\n"); 428 fprintf(stderr, "\t-i number of bytes per inode\n"); 429 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 430 fprintf(stderr, "\t-l hardware sector interleave\n"); 431 fprintf(stderr, "\t-m minimum free space %%\n"); 432 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 433 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 434 fprintf(stderr, "\t-p spare sectors per track\n"); 435 fprintf(stderr, "\t-r revolutions/minute\n"); 436 fprintf(stderr, "\t-s file system size (sectors)\n"); 437 fprintf(stderr, "\t-t tracks/cylinder\n"); 438 fprintf(stderr, "\t-u sectors/track\n"); 439 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 440 exit(1); 441 } 442