sbin/newfs/newfs.c

   1 /*
   2  * Copyright (c) 1983, 1989, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California.  All rights reserved.
  30  * @(#)newfs.c  8.13 (Berkeley) 5/1/95
  31  * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $
  32  */
  33
  34 /*
  35  * newfs: friendly front end to mkfs
  36  */
  37 #include <sys/param.h>
  38 #include <sys/stat.h>
  39 #include <sys/diskslice.h>
  40 #include <sys/file.h>
  41 #include <sys/mount.h>
  42 #include <sys/sysctl.h>
  43
  44 #include <vfs/ufs/dir.h>
  45 #include <vfs/ufs/dinode.h>
  46 #include <vfs/ufs/fs.h>
  47 #include <vfs/ufs/ufsmount.h>
  48
  49 #include <ctype.h>
  50 #include <err.h>
  51 #include <errno.h>
  52 #include <mntopts.h>
  53 #include <inttypes.h>
  54 #include <paths.h>
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57 #include <string.h>
  58 #include <syslog.h>
  59 #include <unistd.h>
  60 #include <disktab.h>
  61
  62 #ifdef MFS
  63 #include <sys/types.h>
  64 #include <sys/mman.h>
  65 #endif
  66
  67 #include <stdarg.h>
  68
  69 #include "defs.h"
  70
  71 struct mntopt mopts[] = {
  72         MOPT_STDOPTS,
  73         MOPT_ASYNC,
  74         MOPT_NULL,
  75 };
  76
  77 void    fatal(const char *fmt, ...) __printflike(1, 2);
  78
  79 #define COMPAT                  /* allow non-labeled disks */
  80
  81 /*
  82  * The following two constants set the default block and fragment sizes.
  83  * Both constants must be a power of 2 and meet the following constraints:
  84  *      MINBSIZE <= DESBLKSIZE <= MAXBSIZE
  85  *      sectorsize <= DESFRAGSIZE <= DESBLKSIZE
  86  *      DESBLKSIZE / DESFRAGSIZE <= 8
  87  */
  88 #define DFL_FRAGSIZE    2048
  89 #define DFL_BLKSIZE     16384
  90
  91 /*
  92  * Cylinder groups may have up to many cylinders. The actual
  93  * number used depends upon how much information can be stored
  94  * on a single cylinder. The default is to use as many as possible
  95  * cylinders per group.
  96  */
  97 #define DESCPG          65536   /* desired fs_cpg ("infinity") */
  98
  99 /*
 100  * Once upon a time...
 101  *    ROTDELAY gives the minimum number of milliseconds to initiate
 102  *    another disk transfer on the same cylinder. It is used in
 103  *    determining the rotationally optimal layout for disk blocks
 104  *    within a file; the default of fs_rotdelay is 4ms.
 105  *
 106  * ...but now we make this 0 to disable the rotdelay delay because
 107  * modern drives with read/write-behind achieve higher performance
 108  * without the delay.
 109  */
 110 #define ROTDELAY        0
 111
 112 /*
 113  * MAXBLKPG determines the maximum number of data blocks which are
 114  * placed in a single cylinder group. The default is one indirect
 115  * block worth of data blocks.
 116  */
 117 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
 118
 119 /*
 120  * Each file system has a number of inodes statically allocated.
 121  * We allocate one inode slot per NFPI fragments, expecting this
 122  * to be far more than we will ever need.
 123  */
 124 #define NFPI            4
 125
 126 /*
 127  * Once upon a time...
 128  *    For each cylinder we keep track of the availability of blocks at different
 129  *    rotational positions, so that we can lay out the data to be picked
 130  *    up with minimum rotational latency.  NRPOS is the default number of
 131  *    rotational positions that we distinguish.  With NRPOS of 8 the resolution
 132  *    of our summary information is 2ms for a typical 3600 rpm drive.
 133  *
 134  * ...but now we make this 1 (which essentially disables the rotational
 135  * position table because modern drives with read-ahead and write-behind do
 136  * better without the rotational position table.
 137  */
 138 #define NRPOS           1       /* number distinct rotational positions */
 139
 140 /*
 141  * About the same time as the above, we knew what went where on the disks.
 142  * no longer so, so kill the code which finds the different platters too...
 143  * We do this by saying one head, with a lot of sectors on it.
 144  * The number of sectors are used to determine the size of a cyl-group.
 145  * Kirk suggested one or two meg per "cylinder" so we say two.
 146  */
 147 #define NTRACKS         1       /* number of heads */
 148 #define NSECTORS        4096    /* number of sectors */
 149
 150 int     mfs;                    /* run as the memory based filesystem */
 151 char    *mfs_mtpt;              /* mount point for mfs          */
 152 struct stat mfs_mtstat;         /* stat prior to mount          */
 153 int     Lflag;                  /* add a volume label */
 154 int     Nflag;                  /* run without writing file system */
 155 int     Oflag;                  /* format as an 4.3BSD file system */
 156 int     Cflag;                  /* copy underlying filesystem (mfs only) */
 157 int     Uflag;                  /* enable soft updates for file system */
 158 int     Eflag;                  /* erase contents using TRIM */
 159 uint64_t slice_offset;          /* Pysical device slice offset */
 160 u_long  fssize;                 /* file system size */
 161 int     ntracks = NTRACKS;      /* # tracks/cylinder */
 162 int     nsectors = NSECTORS;    /* # sectors/track */
 163 int     nphyssectors;           /* # sectors/track including spares */
 164 int     secpercyl;              /* sectors per cylinder */
 165 int     trackspares = -1;       /* spare sectors per track */
 166 int     cylspares = -1;         /* spare sectors per cylinder */
 167 int     sectorsize;             /* bytes/sector */
 168 int     realsectorsize;         /* bytes/sector in hardware */
 169 int     rpm;                    /* revolutions/minute of drive */
 170 int     interleave;             /* hardware sector interleave */
 171 int     trackskew = -1;         /* sector 0 skew, per track */
 172 int     headswitch;             /* head switch time, usec */
 173 int     trackseek;              /* track-to-track seek, usec */
 174 int     fsize = 0;              /* fragment size */
 175 int     bsize = 0;              /* block size */
 176 int     cpg = DESCPG;           /* cylinders/cylinder group */
 177 int     cpgflg;                 /* cylinders/cylinder group flag was given */
 178 int     minfree = MINFREE;      /* free space threshold */
 179 int     opt = DEFAULTOPT;       /* optimization preference (space or time) */
 180 int     density;                /* number of bytes per inode */
 181 int     maxcontig = 0;          /* max contiguous blocks to allocate */
 182 int     rotdelay = ROTDELAY;    /* rotational delay between blocks */
 183 int     maxbpg;                 /* maximum blocks per file in a cyl group */
 184 int     nrpos = NRPOS;          /* # of distinguished rotational positions */
 185 int     avgfilesize = AVFILESIZ;/* expected average file size */
 186 int     avgfilesperdir = AFPDIR;/* expected number of files per directory */
 187 int     bbsize = BBSIZE;        /* boot block size */
 188 int     sbsize = SBSIZE;        /* superblock size */
 189 int     mntflags = MNT_ASYNC;   /* flags to be passed to mount */
 190 int     t_or_u_flag = 0;        /* user has specified -t or -u */
 191 caddr_t membase;                /* start address of memory based filesystem */
 192 char    *filename;
 193 u_char  *volumelabel = NULL;    /* volume label for filesystem */
 194 #ifdef COMPAT
 195 char    *disktype;
 196 int     unlabeled;
 197 #endif
 198
 199 char    mfsdevname[256];
 200 char    *progname;
 201
 202 static void usage(void);
 203 static void mfsintr(int signo);
 204
 205 int
 206 main(int argc, char **argv)
 207 {
 208         int ch, i;
 209         struct disktab geom;            /* disk geometry data */
 210         struct stat st;
 211         struct statfs *mp;
 212         int fsi = -1, fso = -1, len, n, vflag;
 213         char *s1, *s2, *special;
 214         const char *opstring;
 215 #ifdef MFS
 216         struct vfsconf vfc;
 217         int error;
 218 #endif
 219
 220         bzero(&geom, sizeof(geom));
 221         vflag = 0;
 222         if ((progname = strrchr(*argv, '/')))
 223                 ++progname;
 224         else
 225                 progname = *argv;
 226
 227         if (strstr(progname, "mfs")) {
 228                 mfs = 1;
 229                 Nflag++;
 230         }
 231
 232         opstring = mfs ?
 233             "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" :
 234             "L:NEOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:";
 235         while ((ch = getopt(argc, argv, opstring)) != -1) {
 236                 switch (ch) {
 237                 case 'E':
 238                         Eflag = 1;
 239                         break;
 240                 case 'L':
 241                         volumelabel = optarg;
 242                         i = -1;
 243                         while (isalnum(volumelabel[++i]))
 244                                 ;
 245                         if (volumelabel[i] != '\0')
 246                                 errx(1, "bad volume label. Valid characters are alphanumerics.");
 247                         if (strlen(volumelabel) >= MAXVOLLEN)
 248                                 errx(1, "bad volume label. Length is longer than %d.",
 249                                     MAXVOLLEN);
 250                         Lflag = 1;
 251                         break;
 252                 case 'N':
 253                         Nflag = 1;
 254                         break;
 255                 case 'O':
 256                         Oflag = 1;
 257                         break;
 258                 case 'C':
 259                         Cflag = 1;      /* MFS only */
 260                         break;
 261                 case 'S':
 262                         if ((sectorsize = atoi(optarg)) <= 0)
 263                                 fatal("%s: bad sector size", optarg);
 264                         break;
 265 #ifdef COMPAT
 266                 case 'T':
 267                         disktype = optarg;
 268                         break;
 269 #endif
 270                 case 'F':
 271                         filename = optarg;
 272                         break;
 273                 case 'U':
 274                         Uflag = 1;
 275                         break;
 276                 case 'a':
 277                         if ((maxcontig = atoi(optarg)) <= 0)
 278                                 fatal("%s: bad maximum contiguous blocks",
 279                                     optarg);
 280                         break;
 281                 case 'b':
 282                         if ((bsize = atoi(optarg)) < MINBSIZE)
 283                                 fatal("%s: bad block size", optarg);
 284                         break;
 285                 case 'c':
 286                         if ((cpg = atoi(optarg)) <= 0)
 287                                 fatal("%s: bad cylinders/group", optarg);
 288                         cpgflg++;
 289                         break;
 290                 case 'd':
 291                         if ((rotdelay = atoi(optarg)) < 0)
 292                                 fatal("%s: bad rotational delay", optarg);
 293                         break;
 294                 case 'e':
 295                         if ((maxbpg = atoi(optarg)) <= 0)
 296                 fatal("%s: bad blocks per file in a cylinder group",
 297                                     optarg);
 298                         break;
 299                 case 'f':
 300                         if ((fsize = atoi(optarg)) <= 0)
 301                                 fatal("%s: bad fragment size", optarg);
 302                         break;
 303                 case 'g':
 304                         if ((avgfilesize = atoi(optarg)) <= 0)
 305                                 fatal("%s: bad average file size", optarg);
 306                         break;
 307                 case 'h':
 308                         if ((avgfilesperdir = atoi(optarg)) <= 0)
 309                                 fatal("%s: bad average files per dir", optarg);
 310                         break;
 311                 case 'i':
 312                         if ((density = atoi(optarg)) <= 0)
 313                                 fatal("%s: bad bytes per inode", optarg);
 314                         break;
 315                 case 'k':
 316                         if ((trackskew = atoi(optarg)) < 0)
 317                                 fatal("%s: bad track skew", optarg);
 318                         break;
 319                 case 'l':
 320                         if ((interleave = atoi(optarg)) <= 0)
 321                                 fatal("%s: bad interleave", optarg);
 322                         break;
 323                 case 'm':
 324                         if ((minfree = atoi(optarg)) < 0 || minfree > 99)
 325                                 fatal("%s: bad free space %%", optarg);
 326                         break;
 327                 case 'n':
 328                         if ((nrpos = atoi(optarg)) < 0)
 329                                 fatal("%s: bad rotational layout count",
 330                                     optarg);
 331                         if (nrpos == 0)
 332                                 nrpos = 1;
 333                         break;
 334                 case 'o':
 335                         if (mfs)
 336                                 getmntopts(optarg, mopts, &mntflags, 0);
 337                         else {
 338                                 if (strcmp(optarg, "space") == 0)
 339                                         opt = FS_OPTSPACE;
 340                                 else if (strcmp(optarg, "time") == 0)
 341                                         opt = FS_OPTTIME;
 342                                 else
 343         fatal("%s: unknown optimization preference: use `space' or `time'", optarg);
 344                         }
 345                         break;
 346                 case 'p':
 347                         if ((trackspares = atoi(optarg)) < 0)
 348                                 fatal("%s: bad spare sectors per track",
 349                                     optarg);
 350                         break;
 351                 case 'r':
 352                         if ((rpm = atoi(optarg)) <= 0)
 353                                 fatal("%s: bad revolutions/minute", optarg);
 354                         break;
 355                 case 's':
 356                         /*
 357                          * Unsigned long but limit to long.  On 32 bit a
 358                          * tad under 2G, on 64 bit the upper bound is more
 359                          * swap space then operand size.
 360                          *
 361                          * NOTE: fssize is converted from 512 byte sectors
 362                          * to filesystem block-sized sectors by mkfs XXX.
 363                          */
 364                         fssize = strtoul(optarg, NULL, 10);
 365                         if (fssize == 0 || fssize > LONG_MAX)
 366                                 fatal("%s: bad file system size", optarg);
 367                         break;
 368                 case 't':
 369                         t_or_u_flag++;
 370                         if ((ntracks = atoi(optarg)) < 0)
 371                                 fatal("%s: bad total tracks", optarg);
 372                         break;
 373                 case 'u':
 374                         t_or_u_flag++;
 375                         if ((nsectors = atoi(optarg)) < 0)
 376                                 fatal("%s: bad sectors/track", optarg);
 377                         break;
 378                 case 'v':
 379                         vflag = 1;
 380                         break;
 381                 case 'x':
 382                         if ((cylspares = atoi(optarg)) < 0)
 383                                 fatal("%s: bad spare sectors per cylinder",
 384                                     optarg);
 385                         break;
 386                 case '?':
 387                 default:
 388                         usage();
 389                 }
 390         }
 391         argc -= optind;
 392         argv += optind;
 393
 394         if (argc != 2 && (mfs || argc != 1))
 395                 usage();
 396
 397         special = argv[0];
 398         /* Copy the NetBSD way of faking up a disk label */
 399         if (mfs && !strcmp(special, "swap")) {
 400                 /*
 401                  * it's an MFS, mounted on "swap."  fake up a label.
 402                  * XXX XXX XXX
 403                  */
 404                 fso = -1;       /* XXX; normally done below. */
 405
 406                 geom.d_media_blksize = 512;
 407                 geom.d_nheads = 16;
 408                 geom.d_secpertrack = 64;
 409                 /* geom.d_ncylinders not used */
 410                 geom.d_secpercyl = 1024;
 411                 geom.d_media_blocks = 16384;
 412                 geom.d_rpm = 3600;
 413                 geom.d_interleave = 1;
 414
 415                 goto havelabel;
 416         }
 417
 418         /*
 419          * If we can't stat the device and the path is relative, try
 420          * prepending /dev.
 421          */
 422         if (stat(special, &st) < 0 && special[0] && special[0] != '/')
 423                 asprintf(&special, "/dev/%s", special);
 424
 425         if (Eflag) {
 426                 char sysctl_name[64];
 427                 int trim_enabled = 0;
 428                 size_t olen = sizeof(trim_enabled);
 429                 char *dev_name = strdup(special);
 430
 431                 dev_name = strtok(dev_name + strlen("/dev/da"),"s");
 432                 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled",
 433                     dev_name);
 434
 435                 if (sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0) < 0) {
 436                         printf("Device:%s does not support the TRIM command\n",
 437                             special);
 438                         usage();
 439                 }
 440                 if(!trim_enabled) {
 441                         printf("Erase device option selected, but sysctl (%s) "
 442                             "is not enabled\n",sysctl_name);
 443                         usage();
 444
 445                 }
 446         }
 447         if (Nflag) {
 448                 fso = -1;
 449         } else {
 450                 fso = open(special, O_WRONLY);
 451                 if (fso < 0)
 452                         fatal("%s: %s", special, strerror(errno));
 453
 454                 /* Bail if target special is mounted */
 455                 n = getmntinfo(&mp, MNT_NOWAIT);
 456                 if (n == 0)
 457                         fatal("%s: getmntinfo: %s", special, strerror(errno));
 458
 459                 len = sizeof(_PATH_DEV) - 1;
 460                 s1 = special;
 461                 if (strncmp(_PATH_DEV, s1, len) == 0)
 462                         s1 += len;
 463
 464                 while (--n >= 0) {
 465                         s2 = mp->f_mntfromname;
 466                         if (strncmp(_PATH_DEV, s2, len) == 0) {
 467                                 s2 += len - 1;
 468                                 *s2 = 'r';
 469                         }
 470                         if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
 471                                 fatal("%s is mounted on %s",
 472                                     special, mp->f_mntonname);
 473                         ++mp;
 474                 }
 475         }
 476         if (mfs && disktype != NULL) {
 477                 struct disktab *dt;
 478
 479                 if ((dt = getdisktabbyname(disktype)) == NULL)
 480                         fatal("%s: unknown disk type", disktype);
 481                 geom = *dt;
 482         } else {
 483                 struct partinfo pinfo;
 484
 485                 if (special[0] == 0)
 486                         fatal("null special file name");
 487                 fsi = open(special, O_RDONLY);
 488                 if (fsi < 0)
 489                         fatal("%s: %s", special, strerror(errno));
 490                 if (fstat(fsi, &st) < 0)
 491                         fatal("%s: %s", special, strerror(errno));
 492                 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag)
 493                         printf("%s: %s: not a character-special device\n",
 494                             progname, special);
 495 #ifdef COMPAT
 496                 if (!mfs && disktype == NULL)
 497                         disktype = argv[1];
 498 #endif
 499                 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) {
 500                         if (!vflag) {
 501                                 fatal("%s: unable to retrieve geometry "
 502                                       "information", argv[0]);
 503                         }
 504                         /*
 505                          * fake up geometry data
 506                          */
 507                         geom.d_media_blksize = 512;
 508                         geom.d_nheads = 16;
 509                         geom.d_secpertrack = 64;
 510                         geom.d_secpercyl = 1024;
 511                         geom.d_media_blocks = st.st_size /
 512                                               geom.d_media_blksize;
 513                         geom.d_media_size = geom.d_media_blocks *
 514                                             geom.d_media_blksize;
 515                         /* geom.d_ncylinders not used */
 516                 } else {
 517                         /*
 518                          * extract geometry from pinfo
 519                          */
 520                         geom.d_media_blksize = pinfo.media_blksize;
 521                         geom.d_nheads = pinfo.d_nheads;
 522                         geom.d_secpertrack = pinfo.d_secpertrack;
 523                         geom.d_secpercyl = pinfo.d_secpercyl;
 524                         /* geom.d_ncylinders not used */
 525                         geom.d_media_blocks = pinfo.media_blocks;
 526                         geom.d_media_size = pinfo.media_size;
 527                         slice_offset = pinfo.media_offset;
 528                 }
 529                 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) {
 530                         fatal("%s: is unavailable", argv[0]);
 531                 }
 532                 printf("%s: media size %6.2fMB\n",
 533                         argv[0], geom.d_media_size / 1024.0 / 1024.0);
 534                 if (geom.d_media_size / 512 >= 0x80000000ULL)
 535                         fatal("%s: media size is too large for newfs to handle",
 536                               argv[0]);
 537         }
 538 havelabel:
 539         if (fssize == 0)
 540                 fssize = geom.d_media_blocks;
 541         if ((u_long)fssize > geom.d_media_blocks && !mfs) {
 542                fatal("%s: maximum file system size is %" PRIu64 " blocks",
 543                      argv[0], geom.d_media_blocks);
 544         }
 545         if (rpm == 0) {
 546                 rpm = geom.d_rpm;
 547                 if (rpm <= 0)
 548                         rpm = 3600;
 549         }
 550         if (ntracks == 0) {
 551                 ntracks = geom.d_nheads;
 552                 if (ntracks <= 0)
 553                         fatal("%s: no default #tracks", argv[0]);
 554         }
 555         if (nsectors == 0) {
 556                 nsectors = geom.d_secpertrack;
 557                 if (nsectors <= 0)
 558                         fatal("%s: no default #sectors/track", argv[0]);
 559         }
 560         if (sectorsize == 0) {
 561                 sectorsize = geom.d_media_blksize;
 562                 if (sectorsize <= 0)
 563                         fatal("%s: no default sector size", argv[0]);
 564         }
 565         if (trackskew == -1) {
 566                 trackskew = geom.d_trackskew;
 567                 if (trackskew < 0)
 568                         trackskew = 0;
 569         }
 570         if (interleave == 0) {
 571                 interleave = geom.d_interleave;
 572                 if (interleave <= 0)
 573                         interleave = 1;
 574         }
 575         if (fsize == 0)
 576                 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize);
 577         if (bsize == 0)
 578                 bsize = MIN(DFL_BLKSIZE, 8 * fsize);
 579         /*
 580          * Maxcontig sets the default for the maximum number of blocks
 581          * that may be allocated sequentially. With filesystem clustering
 582          * it is possible to allocate contiguous blocks up to the maximum
 583          * transfer size permitted by the controller or buffering.
 584          */
 585         if (maxcontig == 0)
 586                 maxcontig = MAX(1, MAXPHYS / bsize - 1);
 587         if (density == 0)
 588                 density = NFPI * fsize;
 589         if (minfree < MINFREE && opt != FS_OPTSPACE) {
 590                 fprintf(stderr, "Warning: changing optimization to space ");
 591                 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
 592                 opt = FS_OPTSPACE;
 593         }
 594         if (trackspares == -1)
 595                 trackspares = 0;
 596         nphyssectors = nsectors + trackspares;
 597         if (cylspares == -1)
 598                 cylspares = 0;
 599         secpercyl = nsectors * ntracks - cylspares;
 600         /*
 601          * Only complain if -t or -u have been specified; the default
 602          * case (4096 sectors per cylinder) is intended to disagree
 603          * with the disklabel.
 604          */
 605         if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl)
 606                 fprintf(stderr, "%s (%d) %s (%u)\n",
 607                         "Warning: calculated sectors per cylinder", secpercyl,
 608                         "disagrees with disk label", geom.d_secpercyl);
 609         if (maxbpg == 0)
 610                 maxbpg = MAXBLKPG(bsize);
 611         headswitch = geom.d_headswitch;
 612         trackseek = geom.d_trkseek;
 613         realsectorsize = sectorsize;
 614         if (sectorsize != DEV_BSIZE) {          /* XXX */
 615                 int secperblk = sectorsize / DEV_BSIZE;
 616
 617                 sectorsize = DEV_BSIZE;
 618                 nsectors *= secperblk;
 619                 nphyssectors *= secperblk;
 620                 secpercyl *= secperblk;
 621                 fssize *= secperblk;
 622         }
 623         if (mfs) {
 624                 mfs_mtpt = argv[1];
 625                 if (
 626                     stat(mfs_mtpt, &mfs_mtstat) < 0 ||
 627                     !S_ISDIR(mfs_mtstat.st_mode)
 628                 ) {
 629                         fatal("mount point not dir: %s", mfs_mtpt);
 630                 }
 631         }
 632         mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL);
 633
 634         /*
 635          * NOTE: Newfs no longer accesses or attempts to update the
 636          * filesystem disklabel.
 637          *
 638          * NOTE: fssize is converted from 512 byte sectors
 639          * to filesystem block-sized sectors by mkfs XXX.
 640          */
 641         if (!Nflag)
 642                 close(fso);
 643         close(fsi);
 644 #ifdef MFS
 645         if (mfs) {
 646                 struct mfs_args args;
 647
 648                 bzero(&args, sizeof(args));
 649
 650                 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d",
 651                         getpid());
 652                 args.fspec = mfsdevname;
 653                 args.export.ex_root = -2;
 654                 if (mntflags & MNT_RDONLY)
 655                         args.export.ex_flags = MNT_EXRDONLY;
 656                 else
 657                         args.export.ex_flags = 0;
 658                 args.base = membase;
 659                 args.size = fssize * fsize;
 660
 661                 error = getvfsbyname("mfs", &vfc);
 662                 if (error && vfsisloadable("mfs")) {
 663                         if (vfsload("mfs"))
 664                                 fatal("vfsload(mfs)");
 665                         endvfsent();    /* flush cache */
 666                         error = getvfsbyname("mfs", &vfc);
 667                 }
 668                 if (error)
 669                         fatal("mfs filesystem not available");
 670
 671 #if 0
 672                 int udev;
 673                 udev = (253 << 8) | (getpid() & 255) |
 674                         ((getpid() & ~0xFF) << 8);
 675                 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0)
 676                         printf("Warning: unable to create %s\n", mfsdevname);
 677 #endif
 678                 signal(SIGINT, mfsintr);
 679                 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0)
 680                         fatal("%s: %s", argv[1], strerror(errno));
 681                 signal(SIGINT, SIG_DFL);
 682                 mfsintr(SIGINT);
 683         }
 684 #endif
 685         exit(0);
 686 }
 687
 688 #ifdef MFS
 689
 690 static void
 691 mfsintr(__unused int signo)
 692 {
 693         if (filename)
 694                 munmap(membase, fssize * fsize);
 695 #if 0
 696         remove(mfsdevname);
 697 #endif
 698 }
 699
 700 #endif
 701
 702 /*VARARGS*/
 703 void
 704 fatal(const char *fmt, ...)
 705 {
 706         va_list ap;
 707
 708         va_start(ap, fmt);
 709         if (fcntl(STDERR_FILENO, F_GETFL) < 0) {
 710                 openlog(progname, LOG_CONS, LOG_DAEMON);
 711                 vsyslog(LOG_ERR, fmt, ap);
 712                 closelog();
 713         } else {
 714                 vwarnx(fmt, ap);
 715         }
 716         va_end(ap);
 717         exit(1);
 718         /*NOTREACHED*/
 719 }
 720
 721 void
 722 usage(void)
 723 {
 724         if (mfs) {
 725                 fprintf(stderr,
 726                     "usage: %s [ -fsoptions ] special-device mount-point\n",
 727                         progname);
 728         } else
 729                 fprintf(stderr,
 730                     "usage: %s [ -fsoptions ] special-device%s\n",
 731                     progname,
 732 #ifdef COMPAT
 733                     " [device-type]");
 734 #else
 735                     "");
 736 #endif
 737         fprintf(stderr, "where fsoptions are:\n");
 738         fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n");
 739         fprintf(stderr, "\t-E erase file system contents using TRIM\n");
 740         fprintf(stderr, "\t-L volume name\n");
 741         fprintf(stderr,
 742             "\t-N do not create file system, just print out parameters\n");
 743         fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n");
 744         fprintf(stderr, "\t-S sector size\n");
 745 #ifdef COMPAT
 746         fprintf(stderr, "\t-T disktype\n");
 747 #endif
 748         fprintf(stderr, "\t-U enable soft updates\n");
 749         fprintf(stderr, "\t-a maximum contiguous blocks\n");
 750         fprintf(stderr, "\t-b block size\n");
 751         fprintf(stderr, "\t-c cylinders/group\n");
 752         fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
 753         fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
 754         fprintf(stderr, "\t-f frag size\n");
 755         fprintf(stderr, "\t-g average file size\n");
 756         fprintf(stderr, "\t-h average files per directory\n");
 757         fprintf(stderr, "\t-i number of bytes per inode\n");
 758         fprintf(stderr, "\t-k sector 0 skew, per track\n");
 759         fprintf(stderr, "\t-l hardware sector interleave\n");
 760         fprintf(stderr, "\t-m minimum free space %%\n");
 761         fprintf(stderr, "\t-n number of distinguished rotational positions\n");
 762         fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
 763         fprintf(stderr, "\t-p spare sectors per track\n");
 764         fprintf(stderr, "\t-s file system size (sectors)\n");
 765         fprintf(stderr, "\t-r revolutions/minute\n");
 766         fprintf(stderr, "\t-t tracks/cylinder\n");
 767         fprintf(stderr, "\t-u sectors/track\n");
 768         fprintf(stderr,
 769         "\t-v do not attempt to determine partition name from device name\n");
 770         fprintf(stderr, "\t-x spare sectors per cylinder\n");
 771         exit(1);
 772 }