1 /* 2 * Copyright (c) 1983, 1993 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 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 /* 49 * tunefs: change layout parameters to an existing file system. 50 */ 51 #include <sys/param.h> 52 #include <sys/mount.h> 53 #include <sys/disklabel.h> 54 #include <sys/stat.h> 55 56 #include <ufs/ufs/ufsmount.h> 57 #include <ufs/ufs/dinode.h> 58 #include <ufs/ffs/fs.h> 59 60 #include <err.h> 61 #include <fcntl.h> 62 #include <fstab.h> 63 #include <libufs.h> 64 #include <paths.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <unistd.h> 69 70 /* the optimization warning string template */ 71 #define OPTWARN "should optimize for %s with minfree %s %d%%" 72 73 struct uufsd disk; 74 #define sblock disk.d_fs 75 76 void usage(void); 77 void printfs(void); 78 79 int 80 main(int argc, char *argv[]) 81 { 82 const char *special, *on; 83 const char *name; 84 int Aflag = 0, active = 0, aflag = 0; 85 int eflag = 0, fflag = 0, lflag = 0, mflag = 0; 86 int nflag = 0, oflag = 0, pflag = 0, sflag = 0; 87 int evalue = 0, fvalue = 0; 88 int mvalue = 0, ovalue = 0, svalue = 0; 89 char *avalue = NULL, *lvalue = NULL, *nvalue = NULL; 90 const char *chg[2]; 91 struct ufs_args args; 92 struct statfs stfs; 93 int found_arg, ch; 94 95 if (argc < 3) 96 usage(); 97 found_arg = 0; /* at least one arg is required */ 98 while ((ch = getopt(argc, argv, "Aa:e:f:l:m:n:o:ps:")) != -1) 99 switch (ch) { 100 case 'A': 101 found_arg = 1; 102 Aflag++; 103 break; 104 case 'a': 105 found_arg = 1; 106 name = "ACLs"; 107 avalue = optarg; 108 if (strcmp(avalue, "enable") && strcmp(avalue, "disable")) { 109 errx(10, "bad %s (options are %s)", name, 110 "`enable' or `disable'"); 111 } 112 aflag = 1; 113 break; 114 case 'e': 115 found_arg = 1; 116 name = "maximum blocks per file in a cylinder group"; 117 evalue = atoi(optarg); 118 if (evalue < 1) 119 errx(10, "%s must be >= 1 (was %s)", name, optarg); 120 eflag = 1; 121 break; 122 case 'f': 123 found_arg = 1; 124 name = "average file size"; 125 fvalue = atoi(optarg); 126 if (fvalue < 1) 127 errx(10, "%s must be >= 1 (was %s)", name, optarg); 128 fflag = 1; 129 break; 130 case 'l': 131 found_arg = 1; 132 name = "multilabel MAC file system"; 133 lvalue = optarg; 134 if (strcmp(lvalue, "enable") && strcmp(lvalue, "disable")) { 135 errx(10, "bad %s (options are %s)", name, 136 "`enable' or `disable'"); 137 } 138 lflag = 1; 139 break; 140 case 'm': 141 found_arg = 1; 142 name = "minimum percentage of free space"; 143 mvalue = atoi(optarg); 144 if (mvalue < 0 || mvalue > 99) 145 errx(10, "bad %s (%s)", name, optarg); 146 mflag = 1; 147 break; 148 case 'n': 149 found_arg = 1; 150 name = "soft updates"; 151 nvalue = optarg; 152 if (strcmp(nvalue, "enable") && strcmp(nvalue, "disable")) { 153 errx(10, "bad %s (options are %s)", 154 name, "`enable' or `disable'"); 155 } 156 nflag = 1; 157 break; 158 case 'o': 159 found_arg = 1; 160 name = "optimization preference"; 161 chg[FS_OPTSPACE] = "space"; 162 chg[FS_OPTTIME] = "time"; 163 if (strcmp(optarg, chg[FS_OPTSPACE]) == 0) 164 ovalue = FS_OPTSPACE; 165 else if (strcmp(optarg, chg[FS_OPTTIME]) == 0) 166 ovalue = FS_OPTTIME; 167 else 168 errx(10, "bad %s (options are `space' or `time')", 169 name); 170 oflag = 1; 171 break; 172 case 'p': 173 found_arg = 1; 174 pflag = 1; 175 break; 176 case 's': 177 found_arg = 1; 178 name = "expected number of files per directory"; 179 svalue = atoi(optarg); 180 if (svalue < 1) 181 errx(10, "%s must be >= 1 (was %s)", name, optarg); 182 sflag = 1; 183 break; 184 default: 185 usage(); 186 } 187 argc -= optind; 188 argv += optind; 189 190 if (found_arg == 0 || argc != 1) 191 usage(); 192 193 on = special = argv[0]; 194 if (ufs_disk_fillout(&disk, special) == -1) 195 goto err; 196 if (disk.d_name != special) { 197 special = disk.d_name; 198 if (statfs(special, &stfs) == 0 && 199 strcmp(special, stfs.f_mntonname) == 0) 200 active = 1; 201 } 202 203 if (pflag) { 204 printfs(); 205 exit(0); 206 } 207 if (aflag) { 208 name = "ACLs"; 209 if (strcmp(avalue, "enable") == 0) { 210 if (sblock.fs_flags & FS_ACLS) { 211 warnx("%s remains unchanged as enabled", name); 212 } else { 213 sblock.fs_flags |= FS_ACLS; 214 warnx("%s set", name); 215 } 216 } else if (strcmp(avalue, "disable") == 0) { 217 if ((~sblock.fs_flags & FS_ACLS) == 218 FS_ACLS) { 219 warnx("%s remains unchanged as disabled", 220 name); 221 } else { 222 sblock.fs_flags &= ~FS_ACLS; 223 warnx("%s cleared", name); 224 } 225 } 226 } 227 if (eflag) { 228 name = "maximum blocks per file in a cylinder group"; 229 if (sblock.fs_maxbpg == evalue) { 230 warnx("%s remains unchanged as %d", name, evalue); 231 } 232 else { 233 warnx("%s changes from %d to %d", 234 name, sblock.fs_maxbpg, evalue); 235 sblock.fs_maxbpg = evalue; 236 } 237 } 238 if (fflag) { 239 name = "average file size"; 240 if (sblock.fs_avgfilesize == fvalue) { 241 warnx("%s remains unchanged as %d", name, fvalue); 242 } 243 else { 244 warnx("%s changes from %d to %d", 245 name, sblock.fs_avgfilesize, fvalue); 246 sblock.fs_avgfilesize = fvalue; 247 } 248 } 249 if (lflag) { 250 name = "multilabel"; 251 if (strcmp(lvalue, "enable") == 0) { 252 if (sblock.fs_flags & FS_MULTILABEL) { 253 warnx("%s remains unchanged as enabled", name); 254 } else { 255 sblock.fs_flags |= FS_MULTILABEL; 256 warnx("%s set", name); 257 } 258 } else if (strcmp(lvalue, "disable") == 0) { 259 if ((~sblock.fs_flags & FS_MULTILABEL) == 260 FS_MULTILABEL) { 261 warnx("%s remains unchanged as disabled", 262 name); 263 } else { 264 sblock.fs_flags &= ~FS_MULTILABEL; 265 warnx("%s cleared", name); 266 } 267 } 268 } 269 if (mflag) { 270 name = "minimum percentage of free space"; 271 if (sblock.fs_minfree == mvalue) { 272 warnx("%s remains unchanged as %d%%", name, mvalue); 273 } 274 else { 275 warnx("%s changes from %d%% to %d%%", 276 name, sblock.fs_minfree, mvalue); 277 sblock.fs_minfree = mvalue; 278 if (mvalue >= MINFREE && sblock.fs_optim == FS_OPTSPACE) 279 warnx(OPTWARN, "time", ">=", MINFREE); 280 if (mvalue < MINFREE && sblock.fs_optim == FS_OPTTIME) 281 warnx(OPTWARN, "space", "<", MINFREE); 282 } 283 } 284 if (nflag) { 285 name = "soft updates"; 286 if (strcmp(nvalue, "enable") == 0) { 287 if (sblock.fs_flags & FS_DOSOFTDEP) { 288 warnx("%s remains unchanged as enabled", name); 289 } else if (sblock.fs_clean == 0) { 290 warnx("%s cannot be enabled until fsck is run", 291 name); 292 } else { 293 sblock.fs_flags |= FS_DOSOFTDEP; 294 warnx("%s set", name); 295 } 296 } else if (strcmp(nvalue, "disable") == 0) { 297 if ((~sblock.fs_flags & FS_DOSOFTDEP) == FS_DOSOFTDEP) { 298 warnx("%s remains unchanged as disabled", name); 299 } else { 300 sblock.fs_flags &= ~FS_DOSOFTDEP; 301 warnx("%s cleared", name); 302 } 303 } 304 } 305 if (oflag) { 306 name = "optimization preference"; 307 chg[FS_OPTSPACE] = "space"; 308 chg[FS_OPTTIME] = "time"; 309 if (sblock.fs_optim == ovalue) { 310 warnx("%s remains unchanged as %s", name, chg[ovalue]); 311 } 312 else { 313 warnx("%s changes from %s to %s", 314 name, chg[sblock.fs_optim], chg[ovalue]); 315 sblock.fs_optim = ovalue; 316 if (sblock.fs_minfree >= MINFREE && 317 ovalue == FS_OPTSPACE) 318 warnx(OPTWARN, "time", ">=", MINFREE); 319 if (sblock.fs_minfree < MINFREE && 320 ovalue == FS_OPTTIME) 321 warnx(OPTWARN, "space", "<", MINFREE); 322 } 323 } 324 if (sflag) { 325 name = "expected number of files per directory"; 326 if (sblock.fs_avgfpdir == svalue) { 327 warnx("%s remains unchanged as %d", name, svalue); 328 } 329 else { 330 warnx("%s changes from %d to %d", 331 name, sblock.fs_avgfpdir, svalue); 332 sblock.fs_avgfpdir = svalue; 333 } 334 } 335 336 if (sbwrite(&disk, Aflag) == -1) 337 goto err; 338 ufs_disk_close(&disk); 339 if (active) { 340 bzero(&args, sizeof(args)); 341 if (mount("ufs", on, 342 stfs.f_flags | MNT_UPDATE | MNT_RELOAD, &args) < 0) 343 err(9, "%s: reload", special); 344 warnx("file system reloaded"); 345 } 346 exit(0); 347 err: 348 if (disk.d_error != NULL) 349 errx(11, "%s: %s", special, disk.d_error); 350 else 351 err(12, "%s", special); 352 } 353 354 void 355 usage(void) 356 { 357 fprintf(stderr, "%s\n%s\n%s\n", 358 "usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]", 359 " [-l enable | disable] [-m minfree] [-n enable | disable]", 360 " [-o space | time] [-p] [-s avgfpdir] special | filesystem"); 361 exit(2); 362 } 363 364 void 365 printfs(void) 366 { 367 warnx("ACLs: (-a) %s", 368 (sblock.fs_flags & FS_ACLS)? "enabled" : "disabled"); 369 warnx("MAC multilabel: (-l) %s", 370 (sblock.fs_flags & FS_MULTILABEL)? "enabled" : "disabled"); 371 warnx("soft updates: (-n) %s", 372 (sblock.fs_flags & FS_DOSOFTDEP)? "enabled" : "disabled"); 373 warnx("maximum blocks per file in a cylinder group: (-e) %d", 374 sblock.fs_maxbpg); 375 warnx("average file size: (-f) %d", 376 sblock.fs_avgfilesize); 377 warnx("average number of files in a directory: (-s) %d", 378 sblock.fs_avgfpdir); 379 warnx("minimum percentage of free space: (-m) %d%%", 380 sblock.fs_minfree); 381 warnx("optimization preference: (-o) %s", 382 sblock.fs_optim == FS_OPTSPACE ? "space" : "time"); 383 if (sblock.fs_minfree >= MINFREE && 384 sblock.fs_optim == FS_OPTSPACE) 385 warnx(OPTWARN, "time", ">=", MINFREE); 386 if (sblock.fs_minfree < MINFREE && 387 sblock.fs_optim == FS_OPTTIME) 388 warnx(OPTWARN, "space", "<", MINFREE); 389 } 390