usr.sbin/quot/quot.c

   1 /*
   2  * Copyright (C) 1991, 1994 Wolfgang Solfrank.
   3  * Copyright (C) 1991, 1994 TooLs GmbH.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by TooLs GmbH.
  17  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * $FreeBSD: src/usr.sbin/quot/quot.c,v 1.11.2.4 2002/03/15 18:12:41 mikeh Exp $
  32  * $DragonFly: src/usr.sbin/quot/quot.c,v 1.6 2006/04/03 01:58:49 dillon Exp $
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/mount.h>
  37 #include <sys/time.h>
  38
  39 #include <vfs/ufs/dinode.h>
  40 #include <vfs/ufs/inode.h>
  41 #include <vfs/ufs/fs.h>
  42 #include <vfs/ufs/quota.h>
  43
  44 #include <err.h>
  45 #include <fcntl.h>
  46 #include <fstab.h>
  47 #include <errno.h>
  48 #include <paths.h>
  49 #include <pwd.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54
  55 /* some flags of what to do: */
  56 static char estimate;
  57 static char count;
  58 static char unused;
  59 static void (*func)(int, struct fs *, char *);
  60 static long blocksize;
  61 static char *header;
  62 static int headerlen;
  63
  64 static struct ufs1_dinode *get_inode(int, struct fs *, ino_t);
  65 static int      virtualblocks(struct fs *, struct ufs1_dinode *);
  66 static int      isfree(struct ufs1_dinode *);
  67 static void     inituser(void);
  68 static void     usrrehash(void);
  69 static struct user *user(uid_t);
  70 static int      cmpusers(const void *, const void *);
  71 static void     uses(uid_t, daddr_t, time_t);
  72 static void     initfsizes(void);
  73 static void     dofsizes(int, struct fs *, char *);
  74 static void     douser(int, struct fs *, char *);
  75 static void     donames(int, struct fs *, char *);
  76 static void     usage(void);
  77 static void     quot(char *, char *);
  78
  79 /*
  80  * Original BSD quot doesn't round to number of frags/blocks,
  81  * doesn't account for indirection blocks and gets it totally
  82  * wrong if the size is a multiple of the blocksize.
  83  * The new code always counts the number of 512 byte blocks
  84  * instead of the number of kilobytes and converts them to
  85  * kByte when done (on request).
  86  *
  87  * Due to the size of modern disks, we must cast intermediate
  88  * values to 64 bits to prevent potential overflows.
  89  */
  90 #ifdef  COMPAT
  91 #define SIZE(n) (n)
  92 #else
  93 #define SIZE(n) ((int)(((quad_t)(n) * 512 + blocksize - 1)/blocksize))
  94 #endif
  95
  96 #define INOCNT(fs)      ((fs)->fs_ipg)
  97 #define INOSZ(fs)       (sizeof(struct ufs1_dinode) * INOCNT(fs))
  98
  99 static struct ufs1_dinode *
 100 get_inode(int fd, struct fs *super, ino_t ino)
 101 {
 102         static struct ufs1_dinode *ip;
 103         static ino_t last;
 104
 105         if (fd < 0) {           /* flush cache */
 106                 if (ip) {
 107                         free(ip);
 108                         ip = 0;
 109                 }
 110                 return 0;
 111         }
 112
 113         if (!ip || ino < last || ino >= last + INOCNT(super)) {
 114                 if (!ip
 115                     && !(ip = (struct ufs1_dinode *)malloc(INOSZ(super))))
 116                         errx(1, "allocate inodes");
 117                 last = (ino / INOCNT(super)) * INOCNT(super);
 118                 if (lseek(fd, (off_t)ino_to_fsba(super, last) << super->fs_fshift, 0) < (off_t)0
 119                     || read(fd,ip,INOSZ(super)) != (ssize_t)INOSZ(super))
 120                         err(1, "read inodes");
 121         }
 122
 123         return ip + ino % INOCNT(super);
 124 }
 125
 126 #ifdef  COMPAT
 127 #define actualblocks(super,ip)  ((ip)->di_blocks/2)
 128 #else
 129 #define actualblocks(super,ip)  ((ip)->di_blocks)
 130 #endif
 131
 132 static int
 133 virtualblocks(struct fs *super, struct ufs1_dinode *ip)
 134 {
 135         off_t nblk, sz;
 136
 137         sz = ip->di_size;
 138 #ifdef  COMPAT
 139         if (lblkno(super,sz) >= NDADDR) {
 140                 nblk = blkroundup(super,sz);
 141                 if (sz == nblk)
 142                         nblk += super->fs_bsize;
 143         }
 144
 145         return sz / 1024;
 146
 147 #else   /* COMPAT */
 148
 149         if (lblkno(super,sz) >= NDADDR) {
 150                 nblk = blkroundup(super,sz);
 151                 sz = lblkno(super,nblk);
 152                 sz = (sz - NDADDR + NINDIR(super) - 1) / NINDIR(super);
 153                 while (sz > 0) {
 154                         nblk += sz * super->fs_bsize;
 155                         /* sz - 1 rounded up */
 156                         sz = (sz - 1 + NINDIR(super) - 1) / NINDIR(super);
 157                 }
 158         } else
 159                 nblk = fragroundup(super,sz);
 160
 161         return nblk / 512;
 162 #endif  /* COMPAT */
 163 }
 164
 165 static int
 166 isfree(struct ufs1_dinode *ip)
 167 {
 168 #ifdef  COMPAT
 169         return (ip->di_mode&IFMT) == 0;
 170 #else   /* COMPAT */
 171
 172         switch (ip->di_mode&IFMT) {
 173         case IFIFO:
 174         case IFLNK:             /* should check FASTSYMLINK? */
 175         case IFDIR:
 176         case IFREG:
 177                 return 0;
 178         default:
 179                 return 1;
 180         }
 181 #endif
 182 }
 183
 184 static struct user {
 185         uid_t uid;
 186         char *name;
 187         daddr_t space;
 188         long count;
 189         daddr_t spc30;
 190         daddr_t spc60;
 191         daddr_t spc90;
 192 } *users;
 193 static int nusers;
 194
 195 static void
 196 inituser(void)
 197 {
 198         int i;
 199         struct user *usr;
 200
 201         if (!nusers) {
 202                 nusers = 8;
 203                 if (!(users =
 204                     (struct user *)calloc(nusers,sizeof(struct user))))
 205                         errx(1, "allocate users");
 206         } else {
 207                 for (usr = users, i = nusers; --i >= 0; usr++) {
 208                         usr->space = usr->spc30 = usr->spc60 = usr->spc90 = 0;
 209                         usr->count = 0;
 210                 }
 211         }
 212 }
 213
 214 static void
 215 usrrehash(void)
 216 {
 217         int i;
 218         struct user *usr, *usrn;
 219         struct user *svusr;
 220
 221         svusr = users;
 222         nusers <<= 1;
 223         if (!(users = (struct user *)calloc(nusers,sizeof(struct user))))
 224                 errx(1, "allocate users");
 225         for (usr = svusr, i = nusers >> 1; --i >= 0; usr++) {
 226                 for (usrn = users + (usr->uid&(nusers - 1)); usrn->name;
 227                     usrn--) {
 228                         if (usrn <= users)
 229                                 usrn = users + nusers;
 230                 }
 231                 *usrn = *usr;
 232         }
 233 }
 234
 235 static struct user *
 236 user(uid_t uid)
 237 {
 238         struct user *usr;
 239         int i;
 240         struct passwd *pwd;
 241
 242         while (1) {
 243                 for (usr = users + (uid&(nusers - 1)), i = nusers; --i >= 0;
 244                     usr--) {
 245                         if (!usr->name) {
 246                                 usr->uid = uid;
 247
 248                                 if (!(pwd = getpwuid(uid))) {
 249                                         if ((usr->name = (char *)malloc(7)))
 250                                                 sprintf(usr->name,"#%d",uid);
 251                                 } else {
 252                                         if ((usr->name = (char *)
 253                                             malloc(strlen(pwd->pw_name) + 1)))
 254                                                 strcpy(usr->name,pwd->pw_name);
 255                                 }
 256                                 if (!usr->name)
 257                                         errx(1, "allocate users");
 258
 259                                 return usr;
 260
 261                         } else if (usr->uid == uid)
 262                                 return usr;
 263
 264                         if (usr <= users)
 265                                 usr = users + nusers;
 266                 }
 267                 usrrehash();
 268         }
 269 }
 270
 271 static int
 272 cmpusers(const void *v1, const void *v2)
 273 {
 274         const struct user *u1, *u2;
 275         u1 = (const struct user *)v1;
 276         u2 = (const struct user *)v2;
 277
 278         return u2->space - u1->space;
 279 }
 280
 281 #define sortusers(users)        (qsort((users),nusers,sizeof(struct user), \
 282                                     cmpusers))
 283
 284 static void
 285 uses(uid_t uid, daddr_t blks, time_t act)
 286 {
 287         static time_t today;
 288         struct user *usr;
 289
 290         if (!today)
 291                 time(&today);
 292
 293         usr = user(uid);
 294         usr->count++;
 295         usr->space += blks;
 296
 297         if (today - act > 90L * 24L * 60L * 60L)
 298                 usr->spc90 += blks;
 299         if (today - act > 60L * 24L * 60L * 60L)
 300                 usr->spc60 += blks;
 301         if (today - act > 30L * 24L * 60L * 60L)
 302                 usr->spc30 += blks;
 303 }
 304
 305 #ifdef  COMPAT
 306 #define FSZCNT  500
 307 #else
 308 #define FSZCNT  512
 309 #endif
 310 struct fsizes {
 311         struct fsizes *fsz_next;
 312         daddr_t fsz_first, fsz_last;
 313         ino_t fsz_count[FSZCNT];
 314         daddr_t fsz_sz[FSZCNT];
 315 } *fsizes;
 316
 317 static void
 318 initfsizes(void)
 319 {
 320         struct fsizes *fp;
 321         int i;
 322
 323         for (fp = fsizes; fp; fp = fp->fsz_next) {
 324                 for (i = FSZCNT; --i >= 0;) {
 325                         fp->fsz_count[i] = 0;
 326                         fp->fsz_sz[i] = 0;
 327                 }
 328         }
 329 }
 330
 331 static void
 332 dofsizes(int fd, struct fs *super, char *name)
 333 {
 334         ino_t inode, maxino;
 335         struct ufs1_dinode *ip;
 336         daddr_t sz, ksz;
 337         struct fsizes *fp, **fsp;
 338         int i;
 339
 340         maxino = super->fs_ncg * super->fs_ipg - 1;
 341 #ifdef  COMPAT
 342         if (!(fsizes = (struct fsizes *)malloc(sizeof(struct fsizes))))
 343                 errx(1, "allocate fsize structure");
 344 #endif  /* COMPAT */
 345         for (inode = 0; inode < maxino; inode++) {
 346                 errno = 0;
 347                 if ((ip = get_inode(fd,super,inode))
 348 #ifdef  COMPAT
 349                     && ((ip->di_mode&IFMT) == IFREG
 350                         || (ip->di_mode&IFMT) == IFDIR)
 351 #else   /* COMPAT */
 352                     && !isfree(ip)
 353 #endif  /* COMPAT */
 354                     ) {
 355                         sz = estimate ? virtualblocks(super,ip) :
 356                             actualblocks(super,ip);
 357 #ifdef  COMPAT
 358                         if (sz >= FSZCNT) {
 359                                 fsizes->fsz_count[FSZCNT-1]++;
 360                                 fsizes->fsz_sz[FSZCNT-1] += sz;
 361                         } else {
 362                                 fsizes->fsz_count[sz]++;
 363                                 fsizes->fsz_sz[sz] += sz;
 364                         }
 365 #else   /* COMPAT */
 366                         ksz = SIZE(sz);
 367                         for (fsp = &fsizes; (fp = *fsp); fsp = &fp->fsz_next) {
 368                                 if (ksz < fp->fsz_last)
 369                                         break;
 370                         }
 371                         if (!fp || ksz < fp->fsz_first) {
 372                                 if (!(fp = (struct fsizes *)
 373                                     malloc(sizeof(struct fsizes))))
 374                                         errx(1, "allocate fsize structure");
 375                                 fp->fsz_next = *fsp;
 376                                 *fsp = fp;
 377                                 fp->fsz_first = (ksz / FSZCNT) * FSZCNT;
 378                                 fp->fsz_last = fp->fsz_first + FSZCNT;
 379                                 for (i = FSZCNT; --i >= 0;) {
 380                                         fp->fsz_count[i] = 0;
 381                                         fp->fsz_sz[i] = 0;
 382                                 }
 383                         }
 384                         fp->fsz_count[ksz % FSZCNT]++;
 385                         fp->fsz_sz[ksz % FSZCNT] += sz;
 386 #endif  /* COMPAT */
 387                 } else if (errno) {
 388                         err(1, "%s", name);
 389                 }
 390         }
 391         sz = 0;
 392         for (fp = fsizes; fp; fp = fp->fsz_next) {
 393                 for (i = 0; i < FSZCNT; i++) {
 394                         if (fp->fsz_count[i])
 395                                 printf("%d\t%d\t%d\n",fp->fsz_first + i,
 396                                     fp->fsz_count[i],
 397                                     SIZE(sz += fp->fsz_sz[i]));
 398                 }
 399         }
 400 }
 401
 402 static void
 403 douser(int fd, struct fs *super, char *name)
 404 {
 405         ino_t inode, maxino;
 406         struct user *usr, *usrs;
 407         struct ufs1_dinode *ip;
 408         int n;
 409
 410         maxino = super->fs_ncg * super->fs_ipg - 1;
 411         for (inode = 0; inode < maxino; inode++) {
 412                 errno = 0;
 413                 if ((ip = get_inode(fd,super,inode))
 414                     && !isfree(ip))
 415                         uses(ip->di_uid,
 416                             estimate ? virtualblocks(super,ip) :
 417                                 actualblocks(super,ip),
 418                             ip->di_atime);
 419                 else if (errno) {
 420                         err(1, "%s", name);
 421                 }
 422         }
 423         if (!(usrs = (struct user *)malloc(nusers * sizeof(struct user))))
 424                 errx(1, "allocate users");
 425         bcopy(users,usrs,nusers * sizeof(struct user));
 426         sortusers(usrs);
 427         for (usr = usrs, n = nusers; --n >= 0 && usr->count; usr++) {
 428                 printf("%5d",SIZE(usr->space));
 429                 if (count)
 430                         printf("\t%5ld",usr->count);
 431                 printf("\t%-8s",usr->name);
 432                 if (unused)
 433                         printf("\t%5d\t%5d\t%5d",
 434                                SIZE(usr->spc30),
 435                                SIZE(usr->spc60),
 436                                SIZE(usr->spc90));
 437                 printf("\n");
 438         }
 439         free(usrs);
 440 }
 441
 442 static void
 443 donames(int fd, struct fs *super, char *name)
 444 {
 445         int c;
 446         ino_t inode, inode1;
 447         ino_t maxino;
 448         struct ufs1_dinode *ip;
 449
 450         maxino = super->fs_ncg * super->fs_ipg - 1;
 451         /* first skip the name of the filesystem */
 452         while ((c = getchar()) != EOF && (c < '0' || c > '9'))
 453                 while ((c = getchar()) != EOF && c != '\n');
 454         ungetc(c,stdin);
 455         inode1 = -1;
 456         while (scanf("%u",&inode) == 1) {
 457                 if (inode > maxino) {
 458                         warnx("illegal inode %d",inode);
 459                         return;
 460                 }
 461                 errno = 0;
 462                 if ((ip = get_inode(fd,super,inode))
 463                     && !isfree(ip)) {
 464                         printf("%s\t",user(ip->di_uid)->name);
 465                         /* now skip whitespace */
 466                         while ((c = getchar()) == ' ' || c == '\t');
 467                         /* and print out the remainder of the input line */
 468                         while (c != EOF && c != '\n') {
 469                                 putchar(c);
 470                                 c = getchar();
 471                         }
 472                         putchar('\n');
 473                         inode1 = inode;
 474                 } else {
 475                         if (errno) {
 476                                 err(1, "%s", name);
 477                         }
 478                         /* skip this line */
 479                         while ((c = getchar()) != EOF && c != '\n');
 480                 }
 481                 if (c == EOF)
 482                         break;
 483         }
 484 }
 485
 486 static void
 487 usage(void)
 488 {
 489 #ifdef  COMPAT
 490         fprintf(stderr,"usage: quot [-nfcvha] [filesystem ...]\n");
 491 #else   /* COMPAT */
 492         fprintf(stderr,"usage: quot [-acfhknv] [filesystem ...]\n");
 493 #endif  /* COMPAT */
 494         exit(1);
 495 }
 496
 497 static char superblock[SBSIZE];
 498
 499 void
 500 quot(char *name, char *mp)
 501 {
 502         int fd;
 503
 504         get_inode(-1, NULL, 0);         /* flush cache */
 505         inituser();
 506         initfsizes();
 507         if ((fd = open(name,0)) < 0
 508             || lseek(fd,SBOFF,0) != SBOFF
 509             || read(fd,superblock,SBSIZE) != SBSIZE) {
 510                 warn("%s", name);
 511                 close(fd);
 512                 return;
 513         }
 514         if (((struct fs *)superblock)->fs_magic != FS_MAGIC) {
 515                 warnx("%s: not a BSD filesystem",name);
 516                 close(fd);
 517                 return;
 518         }
 519         printf("%s:",name);
 520         if (mp)
 521                 printf(" (%s)",mp);
 522         putchar('\n');
 523         (*func)(fd,(struct fs *)superblock,name);
 524         close(fd);
 525 }
 526
 527 int
 528 main(int argc, char **argv)
 529 {
 530         char all = 0;
 531         struct statfs *mp;
 532         struct fstab *fs;
 533         char dev[MNAMELEN + 1];
 534         char *nm;
 535         int cnt;
 536
 537         func = douser;
 538 #ifndef COMPAT
 539         header = getbsize(&headerlen,&blocksize);
 540 #endif
 541         while (--argc > 0 && **++argv == '-') {
 542                 while (*++*argv) {
 543                         switch (**argv) {
 544                         case 'n':
 545                                 func = donames;
 546                                 break;
 547                         case 'c':
 548                                 func = dofsizes;
 549                                 break;
 550                         case 'a':
 551                                 all = 1;
 552                                 break;
 553                         case 'f':
 554                                 count = 1;
 555                                 break;
 556                         case 'h':
 557                                 estimate = 1;
 558                                 break;
 559 #ifndef COMPAT
 560                         case 'k':
 561                                 blocksize = 1024;
 562                                 break;
 563 #endif  /* COMPAT */
 564                         case 'v':
 565                                 unused = 1;
 566                                 break;
 567                         default:
 568                                 usage();
 569                         }
 570                 }
 571         }
 572         if (all) {
 573                 cnt = getmntinfo(&mp,MNT_NOWAIT);
 574                 for (; --cnt >= 0; mp++) {
 575                         if (!strncmp(mp->f_fstypename, "ufs", MFSNAMELEN)) {
 576                                 if ((nm = strrchr(mp->f_mntfromname,'/'))) {
 577                                         sprintf(dev,"%s%s",_PATH_DEV,nm + 1);
 578                                         nm = dev;
 579                                 } else
 580                                         nm = mp->f_mntfromname;
 581                                 quot(nm,mp->f_mntonname);
 582                         }
 583                 }
 584         }
 585         while (--argc >= 0) {
 586                 if ((fs = getfsfile(*argv)) != NULL)
 587                         quot(fs->fs_spec, 0);
 588                 else
 589                         quot(*argv,0);
 590                 argv++;
 591         }
 592         return 0;
 593 }