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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California.  All rights reserved.
  34  * @(#)newfs.c  8.13 (Berkeley) 5/1/95
  35  * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $
  36  */
  37
  38 /*
  39  * newfs: friendly front end to mkfs
  40  */
  41 #include <sys/param.h>
  42 #include <sys/stat.h>
  43 #include <sys/diskslice.h>
  44 #include <sys/file.h>
  45 #include <sys/mount.h>
  46 #include <sys/sysctl.h>
  47
  48 #include <vfs/ufs/dir.h>
  49 #include <vfs/ufs/dinode.h>
  50 #include <vfs/ufs/fs.h>
  51 #include <vfs/ufs/ufsmount.h>
  52
  53 #include <ctype.h>
  54 #include <err.h>
  55 #include <errno.h>
  56 #include <mntopts.h>
  57 #include <inttypes.h>
  58 #include <paths.h>
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <syslog.h>
  63 #include <unistd.h>
  64 #include <disktab.h>
  65
  66 #ifdef MFS
  67 #include <sys/types.h>
  68 #include <sys/mman.h>
  69 #endif
  70
  71 #include <stdarg.h>
  72
  73 #include "defs.h"
  74
  75 struct mntopt mopts[] = {
  76         MOPT_STDOPTS,
  77         MOPT_ASYNC,
  78         MOPT_NULL,
  79 };
  80
  81 void    fatal(const char *fmt, ...) __printflike(1, 2);
  82
  83 #define COMPAT                  /* allow non-labeled disks */
  84
  85 /*
  86  * The following two constants set the default block and fragment sizes.
  87  * Both constants must be a power of 2 and meet the following constraints:
  88  *      MINBSIZE <= DESBLKSIZE <= MAXBSIZE
  89  *      sectorsize <= DESFRAGSIZE <= DESBLKSIZE
  90  *      DESBLKSIZE / DESFRAGSIZE <= 8
  91  */
  92 #define DFL_FRAGSIZE    2048
  93 #define DFL_BLKSIZE     16384
  94
  95 /*
  96  * Cylinder groups may have up to many cylinders. The actual
  97  * number used depends upon how much information can be stored
  98  * on a single cylinder. The default is to use as many as possible
  99  * cylinders per group.
 100  */
 101 #define DESCPG          65536   /* desired fs_cpg ("infinity") */
 102
 103 /*
 104  * Once upon a time...
 105  *    ROTDELAY gives the minimum number of milliseconds to initiate
 106  *    another disk transfer on the same cylinder. It is used in
 107  *    determining the rotationally optimal layout for disk blocks
 108  *    within a file; the default of fs_rotdelay is 4ms.
 109  *
 110  * ...but now we make this 0 to disable the rotdelay delay because
 111  * modern drives with read/write-behind achieve higher performance
 112  * without the delay.
 113  */
 114 #define ROTDELAY        0
 115
 116 /*
 117  * MAXBLKPG determines the maximum number of data blocks which are
 118  * placed in a single cylinder group. The default is one indirect
 119  * block worth of data blocks.
 120  */
 121 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
 122
 123 /*
 124  * Each file system has a number of inodes statically allocated.
 125  * We allocate one inode slot per NFPI fragments, expecting this
 126  * to be far more than we will ever need.
 127  */
 128 #define NFPI            4
 129
 130 /*
 131  * Once upon a time...
 132  *    For each cylinder we keep track of the availability of blocks at different
 133  *    rotational positions, so that we can lay out the data to be picked
 134  *    up with minimum rotational latency.  NRPOS is the default number of
 135  *    rotational positions that we distinguish.  With NRPOS of 8 the resolution
 136  *    of our summary information is 2ms for a typical 3600 rpm drive.
 137  *
 138  * ...but now we make this 1 (which essentially disables the rotational
 139  * position table because modern drives with read-ahead and write-behind do
 140  * better without the rotational position table.
 141  */
 142 #define NRPOS           1       /* number distinct rotational positions */
 143
 144 /*
 145  * About the same time as the above, we knew what went where on the disks.
 146  * no longer so, so kill the code which finds the different platters too...
 147  * We do this by saying one head, with a lot of sectors on it.
 148  * The number of sectors are used to determine the size of a cyl-group.
 149  * Kirk suggested one or two meg per "cylinder" so we say two.
 150  */
 151 #define NTRACKS         1       /* number of heads */
 152 #define NSECTORS        4096    /* number of sectors */
 153
 154 int     mfs;                    /* run as the memory based filesystem */
 155 char    *mfs_mtpt;              /* mount point for mfs          */
 156 struct stat mfs_mtstat;         /* stat prior to mount          */
 157 int     Lflag;                  /* add a volume label */
 158 int     Nflag;                  /* run without writing file system */
 159 int     Oflag;                  /* format as an 4.3BSD file system */
 160 int     Cflag;                  /* copy underlying filesystem (mfs only) */
 161 int     Uflag;                  /* enable soft updates for file system */
 162 int     Eflag;                  /* erase contents using TRIM */
 163 uint64_t slice_offset;          /* Pysical device slice offset */
 164 u_long  fssize;                 /* file system size */
 165 int     ntracks = NTRACKS;      /* # tracks/cylinder */
 166 int     nsectors = NSECTORS;    /* # sectors/track */
 167 int     nphyssectors;           /* # sectors/track including spares */
 168 int     secpercyl;              /* sectors per cylinder */
 169 int     trackspares = -1;       /* spare sectors per track */
 170 int     cylspares = -1;         /* spare sectors per cylinder */
 171 int     sectorsize;             /* bytes/sector */
 172 int     realsectorsize;         /* bytes/sector in hardware */
 173 int     rpm;                    /* revolutions/minute of drive */
 174 int     interleave;             /* hardware sector interleave */
 175 int     trackskew = -1;         /* sector 0 skew, per track */
 176 int     headswitch;             /* head switch time, usec */
 177 int     trackseek;              /* track-to-track seek, usec */
 178 int     fsize = 0;              /* fragment size */
 179 int     bsize = 0;              /* block size */
 180 int     cpg = DESCPG;           /* cylinders/cylinder group */
 181 int     cpgflg;                 /* cylinders/cylinder group flag was given */
 182 int     minfree = MINFREE;      /* free space threshold */
 183 int     opt = DEFAULTOPT;       /* optimization preference (space or time) */
 184 int     density;                /* number of bytes per inode */
 185 int     maxcontig = 0;          /* max contiguous blocks to allocate */
 186 int     rotdelay = ROTDELAY;    /* rotational delay between blocks */
 187 int     maxbpg;                 /* maximum blocks per file in a cyl group */
 188 int     nrpos = NRPOS;          /* # of distinguished rotational positions */
 189 int     avgfilesize = AVFILESIZ;/* expected average file size */
 190 int     avgfilesperdir = AFPDIR;/* expected number of files per directory */
 191 int     bbsize = BBSIZE;        /* boot block size */
 192 int     sbsize = SBSIZE;        /* superblock size */
 193 int     mntflags = MNT_ASYNC;   /* flags to be passed to mount */
 194 int     t_or_u_flag = 0;        /* user has specified -t or -u */
 195 caddr_t membase;                /* start address of memory based filesystem */
 196 char    *filename;
 197 u_char  *volumelabel = NULL;    /* volume label for filesystem */
 198 #ifdef COMPAT
 199 char    *disktype;
 200 int     unlabeled;
 201 #endif
 202
 203 char    mfsdevname[256];
 204 char    *progname;
 205
 206 static void usage(void);
 207 static void mfsintr(int signo);
 208
 209 int
 210 main(int argc, char **argv)
 211 {
 212         int ch, i;
 213         struct disktab geom;            /* disk geometry data */
 214         struct stat st;
 215         struct statfs *mp;
 216         int fsi = -1, fso = -1, len, n, vflag;
 217         char *s1, *s2, *special;
 218         const char *opstring;
 219 #ifdef MFS
 220         struct vfsconf vfc;
 221         int error;
 222 #endif
 223
 224         bzero(&geom, sizeof(geom));
 225         vflag = 0;
 226         if ((progname = strrchr(*argv, '/')))
 227                 ++progname;
 228         else
 229                 progname = *argv;
 230
 231         if (strstr(progname, "mfs")) {
 232                 mfs = 1;
 233                 Nflag++;
 234         }
 235
 236         opstring = mfs ?
 237             "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" :
 238             "L:NEOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:";
 239         while ((ch = getopt(argc, argv, opstring)) != -1) {
 240                 switch (ch) {
 241                 case 'E':
 242                         Eflag = 1;
 243                         break;
 244                 case 'L':
 245                         volumelabel = optarg;
 246                         i = -1;
 247                         while (isalnum(volumelabel[++i]))
 248                                 ;
 249                         if (volumelabel[i] != '\0')
 250                                 errx(1, "bad volume label. Valid characters are alphanumerics.");
 251                         if (strlen(volumelabel) >= MAXVOLLEN)
 252                                 errx(1, "bad volume label. Length is longer than %d.",
 253                                     MAXVOLLEN);
 254                         Lflag = 1;
 255                         break;
 256                 case 'N':
 257                         Nflag = 1;
 258                         break;
 259                 case 'O':
 260                         Oflag = 1;
 261                         break;
 262                 case 'C':
 263                         Cflag = 1;      /* MFS only */
 264                         break;
 265                 case 'S':
 266                         if ((sectorsize = atoi(optarg)) <= 0)
 267                                 fatal("%s: bad sector size", optarg);
 268                         break;
 269 #ifdef COMPAT
 270                 case 'T':
 271                         disktype = optarg;
 272                         break;
 273 #endif
 274                 case 'F':
 275                         filename = optarg;
 276                         break;
 277                 case 'U':
 278                         Uflag = 1;
 279                         break;
 280                 case 'a':
 281                         if ((maxcontig = atoi(optarg)) <= 0)
 282                                 fatal("%s: bad maximum contiguous blocks",
 283                                     optarg);
 284                         break;
 285                 case 'b':
 286                         if ((bsize = atoi(optarg)) < MINBSIZE)
 287                                 fatal("%s: bad block size", optarg);
 288                         break;
 289                 case 'c':
 290                         if ((cpg = atoi(optarg)) <= 0)
 291                                 fatal("%s: bad cylinders/group", optarg);
 292                         cpgflg++;
 293                         break;
 294                 case 'd':
 295                         if ((rotdelay = atoi(optarg)) < 0)
 296                                 fatal("%s: bad rotational delay", optarg);
 297                         break;
 298                 case 'e':
 299                         if ((maxbpg = atoi(optarg)) <= 0)
 300                 fatal("%s: bad blocks per file in a cylinder group",
 301                                     optarg);
 302                         break;
 303                 case 'f':
 304                         if ((fsize = atoi(optarg)) <= 0)
 305                                 fatal("%s: bad fragment size", optarg);
 306                         break;
 307                 case 'g':
 308                         if ((avgfilesize = atoi(optarg)) <= 0)
 309                                 fatal("%s: bad average file size", optarg);
 310                         break;
 311                 case 'h':
 312                         if ((avgfilesperdir = atoi(optarg)) <= 0)
 313                                 fatal("%s: bad average files per dir", optarg);
 314                         break;
 315                 case 'i':
 316                         if ((density = atoi(optarg)) <= 0)
 317                                 fatal("%s: bad bytes per inode", optarg);
 318                         break;
 319                 case 'k':
 320                         if ((trackskew = atoi(optarg)) < 0)
 321                                 fatal("%s: bad track skew", optarg);
 322                         break;
 323                 case 'l':
 324                         if ((interleave = atoi(optarg)) <= 0)
 325                                 fatal("%s: bad interleave", optarg);
 326                         break;
 327                 case 'm':
 328                         if ((minfree = atoi(optarg)) < 0 || minfree > 99)
 329                                 fatal("%s: bad free space %%", optarg);
 330                         break;
 331                 case 'n':
 332                         if ((nrpos = atoi(optarg)) < 0)
 333                                 fatal("%s: bad rotational layout count",
 334                                     optarg);
 335                         if (nrpos == 0)
 336                                 nrpos = 1;
 337                         break;
 338                 case 'o':
 339                         if (mfs)
 340                                 getmntopts(optarg, mopts, &mntflags, 0);
 341                         else {
 342                                 if (strcmp(optarg, "space") == 0)
 343                                         opt = FS_OPTSPACE;
 344                                 else if (strcmp(optarg, "time") == 0)
 345                                         opt = FS_OPTTIME;
 346                                 else
 347         fatal("%s: unknown optimization preference: use `space' or `time'", optarg);
 348                         }
 349                         break;
 350                 case 'p':
 351                         if ((trackspares = atoi(optarg)) < 0)
 352                                 fatal("%s: bad spare sectors per track",
 353                                     optarg);
 354                         break;
 355                 case 'r':
 356                         if ((rpm = atoi(optarg)) <= 0)
 357                                 fatal("%s: bad revolutions/minute", optarg);
 358                         break;
 359                 case 's':
 360                         /*
 361                          * Unsigned long but limit to long.  On 32 bit a
 362                          * tad under 2G, on 64 bit the upper bound is more
 363                          * swap space then operand size.
 364                          *
 365                          * NOTE: fssize is converted from 512 byte sectors
 366                          * to filesystem block-sized sectors by mkfs XXX.
 367                          */
 368                         fssize = strtoul(optarg, NULL, 10);
 369                         if (fssize == 0 || fssize > LONG_MAX)
 370                                 fatal("%s: bad file system size", optarg);
 371                         break;
 372                 case 't':
 373                         t_or_u_flag++;
 374                         if ((ntracks = atoi(optarg)) < 0)
 375                                 fatal("%s: bad total tracks", optarg);
 376                         break;
 377                 case 'u':
 378                         t_or_u_flag++;
 379                         if ((nsectors = atoi(optarg)) < 0)
 380                                 fatal("%s: bad sectors/track", optarg);
 381                         break;
 382                 case 'v':
 383                         vflag = 1;
 384                         break;
 385                 case 'x':
 386                         if ((cylspares = atoi(optarg)) < 0)
 387                                 fatal("%s: bad spare sectors per cylinder",
 388                                     optarg);
 389                         break;
 390                 case '?':
 391                 default:
 392                         usage();
 393                 }
 394         }
 395         argc -= optind;
 396         argv += optind;
 397
 398         if (argc != 2 && (mfs || argc != 1))
 399                 usage();
 400
 401         special = argv[0];
 402         /* Copy the NetBSD way of faking up a disk label */
 403         if (mfs && !strcmp(special, "swap")) {
 404                 /*
 405                  * it's an MFS, mounted on "swap."  fake up a label.
 406                  * XXX XXX XXX
 407                  */
 408                 fso = -1;       /* XXX; normally done below. */
 409
 410                 geom.d_media_blksize = 512;
 411                 geom.d_nheads = 16;
 412                 geom.d_secpertrack = 64;
 413                 /* geom.d_ncylinders not used */
 414                 geom.d_secpercyl = 1024;
 415                 geom.d_media_blocks = 16384;
 416                 geom.d_rpm = 3600;
 417                 geom.d_interleave = 1;
 418
 419                 goto havelabel;
 420         }
 421
 422         /*
 423          * If we can't stat the device and the path is relative, try
 424          * prepending /dev.
 425          */
 426         if (stat(special, &st) < 0 && special[0] && special[0] != '/')
 427                 asprintf(&special, "/dev/%s", special);
 428
 429         if (Eflag) {
 430                 char sysctl_name[64];
 431                 int trim_enabled = 0;
 432                 size_t olen = sizeof(trim_enabled);
 433                 char *dev_name = strdup(special);
 434
 435                 dev_name = strtok(dev_name + strlen("/dev/da"),"s");
 436                 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled",
 437                     dev_name);
 438
 439                 sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0);
 440
 441                 if(errno == ENOENT) {
 442                         printf("Device:%s does not support the TRIM command\n",
 443                             special);
 444                         usage();
 445                 }
 446                 if(!trim_enabled) {
 447                         printf("Erase device option selected, but sysctl (%s) "
 448                             "is not enabled\n",sysctl_name);
 449                         usage();
 450
 451                 }
 452         }
 453         if (Nflag) {
 454                 fso = -1;
 455         } else {
 456                 fso = open(special, O_WRONLY);
 457                 if (fso < 0)
 458                         fatal("%s: %s", special, strerror(errno));
 459
 460                 /* Bail if target special is mounted */
 461                 n = getmntinfo(&mp, MNT_NOWAIT);
 462                 if (n == 0)
 463                         fatal("%s: getmntinfo: %s", special, strerror(errno));
 464
 465                 len = sizeof(_PATH_DEV) - 1;
 466                 s1 = special;
 467                 if (strncmp(_PATH_DEV, s1, len) == 0)
 468                         s1 += len;
 469
 470                 while (--n >= 0) {
 471                         s2 = mp->f_mntfromname;
 472                         if (strncmp(_PATH_DEV, s2, len) == 0) {
 473                                 s2 += len - 1;
 474                                 *s2 = 'r';
 475                         }
 476                         if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
 477                                 fatal("%s is mounted on %s",
 478                                     special, mp->f_mntonname);
 479                         ++mp;
 480                 }
 481         }
 482         if (mfs && disktype != NULL) {
 483                 struct disktab *dt;
 484
 485                 if ((dt = getdisktabbyname(disktype)) == NULL)
 486                         fatal("%s: unknown disk type", disktype);
 487                 geom = *dt;
 488         } else {
 489                 struct partinfo pinfo;
 490
 491                 if (special[0] == 0)
 492                         fatal("null special file name");
 493                 fsi = open(special, O_RDONLY);
 494                 if (fsi < 0)
 495                         fatal("%s: %s", special, strerror(errno));
 496                 if (fstat(fsi, &st) < 0)
 497                         fatal("%s: %s", special, strerror(errno));
 498                 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag)
 499                         printf("%s: %s: not a character-special device\n",
 500                             progname, special);
 501 #ifdef COMPAT
 502                 if (!mfs && disktype == NULL)
 503                         disktype = argv[1];
 504 #endif
 505                 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) {
 506                         if (!vflag) {
 507                                 fatal("%s: unable to retrieve geometry "
 508                                       "information", argv[0]);
 509                         }
 510                         /*
 511                          * fake up geometry data
 512                          */
 513                         geom.d_media_blksize = 512;
 514                         geom.d_nheads = 16;
 515                         geom.d_secpertrack = 64;
 516                         geom.d_secpercyl = 1024;
 517                         geom.d_media_blocks = st.st_size /
 518                                               geom.d_media_blksize;
 519                         geom.d_media_size = geom.d_media_blocks *
 520                                             geom.d_media_blksize;
 521                         /* geom.d_ncylinders not used */
 522                 } else {
 523                         /*
 524                          * extract geometry from pinfo
 525                          */
 526                         geom.d_media_blksize = pinfo.media_blksize;
 527                         geom.d_nheads = pinfo.d_nheads;
 528                         geom.d_secpertrack = pinfo.d_secpertrack;
 529                         geom.d_secpercyl = pinfo.d_secpercyl;
 530                         /* geom.d_ncylinders not used */
 531                         geom.d_media_blocks = pinfo.media_blocks;
 532                         geom.d_media_size = pinfo.media_size;
 533                         slice_offset = pinfo.media_offset;
 534                 }
 535                 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) {
 536                         fatal("%s: is unavailable", argv[0]);
 537                 }
 538                 printf("%s: media size %6.2fMB\n",
 539                         argv[0], geom.d_media_size / 1024.0 / 1024.0);
 540                 if (geom.d_media_size / 512 >= 0x80000000ULL)
 541                         fatal("%s: media size is too large for newfs to handle",
 542                               argv[0]);
 543         }
 544 havelabel:
 545         if (fssize == 0)
 546                 fssize = geom.d_media_blocks;
 547         if ((u_long)fssize > geom.d_media_blocks && !mfs) {
 548                fatal("%s: maximum file system size is %" PRIu64 " blocks",
 549                      argv[0], geom.d_media_blocks);
 550         }
 551         if (rpm == 0) {
 552                 rpm = geom.d_rpm;
 553                 if (rpm <= 0)
 554                         rpm = 3600;
 555         }
 556         if (ntracks == 0) {
 557                 ntracks = geom.d_nheads;
 558                 if (ntracks <= 0)
 559                         fatal("%s: no default #tracks", argv[0]);
 560         }
 561         if (nsectors == 0) {
 562                 nsectors = geom.d_secpertrack;
 563                 if (nsectors <= 0)
 564                         fatal("%s: no default #sectors/track", argv[0]);
 565         }
 566         if (sectorsize == 0) {
 567                 sectorsize = geom.d_media_blksize;
 568                 if (sectorsize <= 0)
 569                         fatal("%s: no default sector size", argv[0]);
 570         }
 571         if (trackskew == -1) {
 572                 trackskew = geom.d_trackskew;
 573                 if (trackskew < 0)
 574                         trackskew = 0;
 575         }
 576         if (interleave == 0) {
 577                 interleave = geom.d_interleave;
 578                 if (interleave <= 0)
 579                         interleave = 1;
 580         }
 581         if (fsize == 0)
 582                 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize);
 583         if (bsize == 0)
 584                 bsize = MIN(DFL_BLKSIZE, 8 * fsize);
 585         /*
 586          * Maxcontig sets the default for the maximum number of blocks
 587          * that may be allocated sequentially. With filesystem clustering
 588          * it is possible to allocate contiguous blocks up to the maximum
 589          * transfer size permitted by the controller or buffering.
 590          */
 591         if (maxcontig == 0)
 592                 maxcontig = MAX(1, MAXPHYS / bsize - 1);
 593         if (density == 0)
 594                 density = NFPI * fsize;
 595         if (minfree < MINFREE && opt != FS_OPTSPACE) {
 596                 fprintf(stderr, "Warning: changing optimization to space ");
 597                 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
 598                 opt = FS_OPTSPACE;
 599         }
 600         if (trackspares == -1)
 601                 trackspares = 0;
 602         nphyssectors = nsectors + trackspares;
 603         if (cylspares == -1)
 604                 cylspares = 0;
 605         secpercyl = nsectors * ntracks - cylspares;
 606         /*
 607          * Only complain if -t or -u have been specified; the default
 608          * case (4096 sectors per cylinder) is intended to disagree
 609          * with the disklabel.
 610          */
 611         if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl)
 612                 fprintf(stderr, "%s (%d) %s (%u)\n",
 613                         "Warning: calculated sectors per cylinder", secpercyl,
 614                         "disagrees with disk label", geom.d_secpercyl);
 615         if (maxbpg == 0)
 616                 maxbpg = MAXBLKPG(bsize);
 617         headswitch = geom.d_headswitch;
 618         trackseek = geom.d_trkseek;
 619         realsectorsize = sectorsize;
 620         if (sectorsize != DEV_BSIZE) {          /* XXX */
 621                 int secperblk = sectorsize / DEV_BSIZE;
 622
 623                 sectorsize = DEV_BSIZE;
 624                 nsectors *= secperblk;
 625                 nphyssectors *= secperblk;
 626                 secpercyl *= secperblk;
 627                 fssize *= secperblk;
 628         }
 629         if (mfs) {
 630                 mfs_mtpt = argv[1];
 631                 if (
 632                     stat(mfs_mtpt, &mfs_mtstat) < 0 ||
 633                     !S_ISDIR(mfs_mtstat.st_mode)
 634                 ) {
 635                         fatal("mount point not dir: %s", mfs_mtpt);
 636                 }
 637         }
 638         mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL);
 639
 640         /*
 641          * NOTE: Newfs no longer accesses or attempts to update the
 642          * filesystem disklabel.
 643          *
 644          * NOTE: fssize is converted from 512 byte sectors
 645          * to filesystem block-sized sectors by mkfs XXX.
 646          */
 647         if (!Nflag)
 648                 close(fso);
 649         close(fsi);
 650 #ifdef MFS
 651         if (mfs) {
 652                 struct mfs_args args;
 653
 654                 bzero(&args, sizeof(args));
 655
 656                 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d",
 657                         getpid());
 658                 args.fspec = mfsdevname;
 659                 args.export.ex_root = -2;
 660                 if (mntflags & MNT_RDONLY)
 661                         args.export.ex_flags = MNT_EXRDONLY;
 662                 else
 663                         args.export.ex_flags = 0;
 664                 args.base = membase;
 665                 args.size = fssize * fsize;
 666
 667                 error = getvfsbyname("mfs", &vfc);
 668                 if (error && vfsisloadable("mfs")) {
 669                         if (vfsload("mfs"))
 670                                 fatal("vfsload(mfs)");
 671                         endvfsent();    /* flush cache */
 672                         error = getvfsbyname("mfs", &vfc);
 673                 }
 674                 if (error)
 675                         fatal("mfs filesystem not available");
 676
 677 #if 0
 678                 int udev;
 679                 udev = (253 << 8) | (getpid() & 255) |
 680                         ((getpid() & ~0xFF) << 8);
 681                 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0)
 682                         printf("Warning: unable to create %s\n", mfsdevname);
 683 #endif
 684                 signal(SIGINT, mfsintr);
 685                 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0)
 686                         fatal("%s: %s", argv[1], strerror(errno));
 687                 signal(SIGINT, SIG_DFL);
 688                 mfsintr(SIGINT);
 689         }
 690 #endif
 691         exit(0);
 692 }
 693
 694 #ifdef MFS
 695
 696 static void
 697 mfsintr(__unused int signo)
 698 {
 699         if (filename)
 700                 munmap(membase, fssize * fsize);
 701 #if 0
 702         remove(mfsdevname);
 703 #endif
 704 }
 705
 706 #endif
 707
 708 /*VARARGS*/
 709 void
 710 fatal(const char *fmt, ...)
 711 {
 712         va_list ap;
 713
 714         va_start(ap, fmt);
 715         if (fcntl(STDERR_FILENO, F_GETFL) < 0) {
 716                 openlog(progname, LOG_CONS, LOG_DAEMON);
 717                 vsyslog(LOG_ERR, fmt, ap);
 718                 closelog();
 719         } else {
 720                 vwarnx(fmt, ap);
 721         }
 722         va_end(ap);
 723         exit(1);
 724         /*NOTREACHED*/
 725 }
 726
 727 void
 728 usage(void)
 729 {
 730         if (mfs) {
 731                 fprintf(stderr,
 732                     "usage: %s [ -fsoptions ] special-device mount-point\n",
 733                         progname);
 734         } else
 735                 fprintf(stderr,
 736                     "usage: %s [ -fsoptions ] special-device%s\n",
 737                     progname,
 738 #ifdef COMPAT
 739                     " [device-type]");
 740 #else
 741                     "");
 742 #endif
 743         fprintf(stderr, "where fsoptions are:\n");
 744         fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n");
 745         fprintf(stderr, "\t-E erase file system contents using TRIM\n");
 746         fprintf(stderr, "\t-L volume name\n");
 747         fprintf(stderr,
 748             "\t-N do not create file system, just print out parameters\n");
 749         fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n");
 750         fprintf(stderr, "\t-S sector size\n");
 751 #ifdef COMPAT
 752         fprintf(stderr, "\t-T disktype\n");
 753 #endif
 754         fprintf(stderr, "\t-U enable soft updates\n");
 755         fprintf(stderr, "\t-a maximum contiguous blocks\n");
 756         fprintf(stderr, "\t-b block size\n");
 757         fprintf(stderr, "\t-c cylinders/group\n");
 758         fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
 759         fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
 760         fprintf(stderr, "\t-f frag size\n");
 761         fprintf(stderr, "\t-g average file size\n");
 762         fprintf(stderr, "\t-h average files per directory\n");
 763         fprintf(stderr, "\t-i number of bytes per inode\n");
 764         fprintf(stderr, "\t-k sector 0 skew, per track\n");
 765         fprintf(stderr, "\t-l hardware sector interleave\n");
 766         fprintf(stderr, "\t-m minimum free space %%\n");
 767         fprintf(stderr, "\t-n number of distinguished rotational positions\n");
 768         fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
 769         fprintf(stderr, "\t-p spare sectors per track\n");
 770         fprintf(stderr, "\t-s file system size (sectors)\n");
 771         fprintf(stderr, "\t-r revolutions/minute\n");
 772         fprintf(stderr, "\t-t tracks/cylinder\n");
 773         fprintf(stderr, "\t-u sectors/track\n");
 774         fprintf(stderr,
 775         "\t-v do not attempt to determine partition name from device name\n");
 776         fprintf(stderr, "\t-x spare sectors per cylinder\n");
 777         exit(1);
 778 }