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 1.7 2007/12/27 02:25:41 swildner 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 <inttypes.h>
  49 #include <paths.h>
  50 #include <pwd.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55
  56 /* some flags of what to do: */
  57 static char estimate;
  58 static char count;
  59 static char unused;
  60 static void (*func)(int, struct fs *, char *);
  61 static long blocksize;
  62 static char *header;
  63 static int headerlen;
  64
  65 static struct ufs1_dinode *get_inode(int, struct fs *, ino_t);
  66 static int      virtualblocks(struct fs *, struct ufs1_dinode *);
  67 static int      isfree(struct ufs1_dinode *);
  68 static void     inituser(void);
  69 static void     usrrehash(void);
  70 static struct user *user(uid_t);
  71 static int      cmpusers(const void *, const void *);
  72 static void     uses(uid_t, daddr_t, time_t);
  73 static void     initfsizes(void);
  74 static void     dofsizes(int, struct fs *, char *);
  75 static void     douser(int, struct fs *, char *);
  76 static void     donames(int, struct fs *, char *);
  77 static void     usage(void);
  78 static void     quot(char *, char *);
  79
  80 /*
  81  * Original BSD quot doesn't round to number of frags/blocks,
  82  * doesn't account for indirection blocks and gets it totally
  83  * wrong if the size is a multiple of the blocksize.
  84  * The new code always counts the number of 512 byte blocks
  85  * instead of the number of kilobytes and converts them to
  86  * kByte when done (on request).
  87  *
  88  * Due to the size of modern disks, we must cast intermediate
  89  * values to 64 bits to prevent potential overflows.
  90  */
  91 #ifdef  COMPAT
  92 #define SIZE(n) (n)
  93 #else
  94 #define SIZE(n) ((int)(((quad_t)(n) * 512 + blocksize - 1)/blocksize))
  95 #endif
  96
  97 #define INOCNT(fs)      ((fs)->fs_ipg)
  98 #define INOSZ(fs)       (sizeof(struct ufs1_dinode) * INOCNT(fs))
  99
 100 static struct ufs1_dinode *
 101 get_inode(int fd, struct fs *super, ino_t ino)
 102 {
 103         static struct ufs1_dinode *ip;
 104         static ino_t last;
 105
 106         if (fd < 0) {           /* flush cache */
 107                 if (ip) {
 108                         free(ip);
 109                         ip = 0;
 110                 }
 111                 return 0;
 112         }
 113
 114         if (!ip || ino < last || ino >= last + INOCNT(super)) {
 115                 if (!ip
 116                     && !(ip = (struct ufs1_dinode *)malloc(INOSZ(super))))
 117                         errx(1, "allocate inodes");
 118                 last = (ino / INOCNT(super)) * INOCNT(super);
 119                 if (lseek(fd, (off_t)ino_to_fsba(super, last) << super->fs_fshift, 0) < (off_t)0
 120                     || read(fd,ip,INOSZ(super)) != (ssize_t)INOSZ(super))
 121                         err(1, "read inodes");
 122         }
 123
 124         return ip + ino % INOCNT(super);
 125 }
 126
 127 #ifdef  COMPAT
 128 #define actualblocks(super,ip)  ((ip)->di_blocks/2)
 129 #else
 130 #define actualblocks(super,ip)  ((ip)->di_blocks)
 131 #endif
 132
 133 static int
 134 virtualblocks(struct fs *super, struct ufs1_dinode *ip)
 135 {
 136         off_t nblk, sz;
 137
 138         sz = ip->di_size;
 139 #ifdef  COMPAT
 140         if (lblkno(super,sz) >= NDADDR) {
 141                 nblk = blkroundup(super,sz);
 142                 if (sz == nblk)
 143                         nblk += super->fs_bsize;
 144         }
 145
 146         return sz / 1024;
 147
 148 #else   /* COMPAT */
 149
 150         if (lblkno(super,sz) >= NDADDR) {
 151                 nblk = blkroundup(super,sz);
 152                 sz = lblkno(super,nblk);
 153                 sz = (sz - NDADDR + NINDIR(super) - 1) / NINDIR(super);
 154                 while (sz > 0) {
 155                         nblk += sz * super->fs_bsize;
 156                         /* sz - 1 rounded up */
 157                         sz = (sz - 1 + NINDIR(super) - 1) / NINDIR(super);
 158                 }
 159         } else
 160                 nblk = fragroundup(super,sz);
 161
 162         return nblk / 512;
 163 #endif  /* COMPAT */
 164 }
 165
 166 static int
 167 isfree(struct ufs1_dinode *ip)
 168 {
 169 #ifdef  COMPAT
 170         return (ip->di_mode&IFMT) == 0;
 171 #else   /* COMPAT */
 172
 173         switch (ip->di_mode&IFMT) {
 174         case IFIFO:
 175         case IFLNK:             /* should check FASTSYMLINK? */
 176         case IFDIR:
 177         case IFREG:
 178                 return 0;
 179         default:
 180                 return 1;
 181         }
 182 #endif
 183 }
 184
 185 static struct user {
 186         uid_t uid;
 187         char *name;
 188         daddr_t space;
 189         long count;
 190         daddr_t spc30;
 191         daddr_t spc60;
 192         daddr_t spc90;
 193 } *users;
 194 static int nusers;
 195
 196 static void
 197 inituser(void)
 198 {
 199         int i;
 200         struct user *usr;
 201
 202         if (!nusers) {
 203                 nusers = 8;
 204                 if (!(users =
 205                     (struct user *)calloc(nusers,sizeof(struct user))))
 206                         errx(1, "allocate users");
 207         } else {
 208                 for (usr = users, i = nusers; --i >= 0; usr++) {
 209                         usr->space = usr->spc30 = usr->spc60 = usr->spc90 = 0;
 210                         usr->count = 0;
 211                 }
 212         }
 213 }
 214
 215 static void
 216 usrrehash(void)
 217 {
 218         int i;
 219         struct user *usr, *usrn;
 220         struct user *svusr;
 221
 222         svusr = users;
 223         nusers <<= 1;
 224         if (!(users = (struct user *)calloc(nusers,sizeof(struct user))))
 225                 errx(1, "allocate users");
 226         for (usr = svusr, i = nusers >> 1; --i >= 0; usr++) {
 227                 for (usrn = users + (usr->uid&(nusers - 1)); usrn->name;
 228                     usrn--) {
 229                         if (usrn <= users)
 230                                 usrn = users + nusers;
 231                 }
 232                 *usrn = *usr;
 233         }
 234 }
 235
 236 static struct user *
 237 user(uid_t uid)
 238 {
 239         struct user *usr;
 240         int i;
 241         struct passwd *pwd;
 242
 243         while (1) {
 244                 for (usr = users + (uid&(nusers - 1)), i = nusers; --i >= 0;
 245                     usr--) {
 246                         if (!usr->name) {
 247                                 usr->uid = uid;
 248
 249                                 if (!(pwd = getpwuid(uid))) {
 250                                         if ((usr->name = (char *)malloc(7)))
 251                                                 sprintf(usr->name,"#%d",uid);
 252                                 } else {
 253                                         if ((usr->name = (char *)
 254                                             malloc(strlen(pwd->pw_name) + 1)))
 255                                                 strcpy(usr->name,pwd->pw_name);
 256                                 }
 257                                 if (!usr->name)
 258                                         errx(1, "allocate users");
 259
 260                                 return usr;
 261
 262                         } else if (usr->uid == uid)
 263                                 return usr;
 264
 265                         if (usr <= users)
 266                                 usr = users + nusers;
 267                 }
 268                 usrrehash();
 269         }
 270 }
 271
 272 static int
 273 cmpusers(const void *v1, const void *v2)
 274 {
 275         const struct user *u1, *u2;
 276         u1 = (const struct user *)v1;
 277         u2 = (const struct user *)v2;
 278
 279         return u2->space - u1->space;
 280 }
 281
 282 #define sortusers(users)        (qsort((users),nusers,sizeof(struct user), \
 283                                     cmpusers))
 284
 285 static void
 286 uses(uid_t uid, daddr_t blks, time_t act)
 287 {
 288         static time_t today;
 289         struct user *usr;
 290
 291         if (!today)
 292                 time(&today);
 293
 294         usr = user(uid);
 295         usr->count++;
 296         usr->space += blks;
 297
 298         if (today - act > 90L * 24L * 60L * 60L)
 299                 usr->spc90 += blks;
 300         if (today - act > 60L * 24L * 60L * 60L)
 301                 usr->spc60 += blks;
 302         if (today - act > 30L * 24L * 60L * 60L)
 303                 usr->spc30 += blks;
 304 }
 305
 306 #ifdef  COMPAT
 307 #define FSZCNT  500
 308 #else
 309 #define FSZCNT  512
 310 #endif
 311 struct fsizes {
 312         struct fsizes *fsz_next;
 313         daddr_t fsz_first, fsz_last;
 314         ino_t fsz_count[FSZCNT];
 315         daddr_t fsz_sz[FSZCNT];
 316 } *fsizes;
 317
 318 static void
 319 initfsizes(void)
 320 {
 321         struct fsizes *fp;
 322         int i;
 323
 324         for (fp = fsizes; fp; fp = fp->fsz_next) {
 325                 for (i = FSZCNT; --i >= 0;) {
 326                         fp->fsz_count[i] = 0;
 327                         fp->fsz_sz[i] = 0;
 328                 }
 329         }
 330 }
 331
 332 static void
 333 dofsizes(int fd, struct fs *super, char *name)
 334 {
 335         ino_t inode, maxino;
 336         struct ufs1_dinode *ip;
 337         daddr_t sz, ksz;
 338         struct fsizes *fp, **fsp;
 339         int i;
 340
 341         maxino = super->fs_ncg * super->fs_ipg - 1;
 342 #ifdef  COMPAT
 343         if (!(fsizes = (struct fsizes *)malloc(sizeof(struct fsizes))))
 344                 errx(1, "allocate fsize structure");
 345 #endif  /* COMPAT */
 346         for (inode = 0; inode < maxino; inode++) {
 347                 errno = 0;
 348                 if ((ip = get_inode(fd,super,inode))
 349 #ifdef  COMPAT
 350                     && ((ip->di_mode&IFMT) == IFREG
 351                         || (ip->di_mode&IFMT) == IFDIR)
 352 #else   /* COMPAT */
 353                     && !isfree(ip)
 354 #endif  /* COMPAT */
 355                     ) {
 356                         sz = estimate ? virtualblocks(super,ip) :
 357                             actualblocks(super,ip);
 358 #ifdef  COMPAT
 359                         if (sz >= FSZCNT) {
 360                                 fsizes->fsz_count[FSZCNT-1]++;
 361                                 fsizes->fsz_sz[FSZCNT-1] += sz;
 362                         } else {
 363                                 fsizes->fsz_count[sz]++;
 364                                 fsizes->fsz_sz[sz] += sz;
 365                         }
 366 #else   /* COMPAT */
 367                         ksz = SIZE(sz);
 368                         for (fsp = &fsizes; (fp = *fsp); fsp = &fp->fsz_next) {
 369                                 if (ksz < fp->fsz_last)
 370                                         break;
 371                         }
 372                         if (!fp || ksz < fp->fsz_first) {
 373                                 if (!(fp = (struct fsizes *)
 374                                     malloc(sizeof(struct fsizes))))
 375                                         errx(1, "allocate fsize structure");
 376                                 fp->fsz_next = *fsp;
 377                                 *fsp = fp;
 378                                 fp->fsz_first = (ksz / FSZCNT) * FSZCNT;
 379                                 fp->fsz_last = fp->fsz_first + FSZCNT;
 380                                 for (i = FSZCNT; --i >= 0;) {
 381                                         fp->fsz_count[i] = 0;
 382                                         fp->fsz_sz[i] = 0;
 383                                 }
 384                         }
 385                         fp->fsz_count[ksz % FSZCNT]++;
 386                         fp->fsz_sz[ksz % FSZCNT] += sz;
 387 #endif  /* COMPAT */
 388                 } else if (errno) {
 389                         err(1, "%s", name);
 390                 }
 391         }
 392         sz = 0;
 393         for (fp = fsizes; fp; fp = fp->fsz_next) {
 394                 for (i = 0; i < FSZCNT; i++) {
 395                         if (fp->fsz_count[i])
 396                                 printf("%d\t%ju\t%d\n",fp->fsz_first + i,
 397                                     (uintmax_t)fp->fsz_count[i],
 398                                     SIZE(sz += fp->fsz_sz[i]));
 399                 }
 400         }
 401 }
 402
 403 static void
 404 douser(int fd, struct fs *super, char *name)
 405 {
 406         ino_t inode, maxino;
 407         struct user *usr, *usrs;
 408         struct ufs1_dinode *ip;
 409         int n;
 410
 411         maxino = super->fs_ncg * super->fs_ipg - 1;
 412         for (inode = 0; inode < maxino; inode++) {
 413                 errno = 0;
 414                 if ((ip = get_inode(fd,super,inode))
 415                     && !isfree(ip))
 416                         uses(ip->di_uid,
 417                             estimate ? virtualblocks(super,ip) :
 418                                 actualblocks(super,ip),
 419                             ip->di_atime);
 420                 else if (errno) {
 421                         err(1, "%s", name);
 422                 }
 423         }
 424         if (!(usrs = (struct user *)malloc(nusers * sizeof(struct user))))
 425                 errx(1, "allocate users");
 426         bcopy(users,usrs,nusers * sizeof(struct user));
 427         sortusers(usrs);
 428         for (usr = usrs, n = nusers; --n >= 0 && usr->count; usr++) {
 429                 printf("%5d",SIZE(usr->space));
 430                 if (count)
 431                         printf("\t%5ld",usr->count);
 432                 printf("\t%-8s",usr->name);
 433                 if (unused)
 434                         printf("\t%5d\t%5d\t%5d",
 435                                SIZE(usr->spc30),
 436                                SIZE(usr->spc60),
 437                                SIZE(usr->spc90));
 438                 printf("\n");
 439         }
 440         free(usrs);
 441 }
 442
 443 static void
 444 donames(int fd, struct fs *super, char *name)
 445 {
 446         int c;
 447         ino_t inode, inode1;
 448         ino_t maxino;
 449         struct ufs1_dinode *ip;
 450
 451         maxino = super->fs_ncg * super->fs_ipg - 1;
 452         /* first skip the name of the filesystem */
 453         while ((c = getchar()) != EOF && (c < '0' || c > '9'))
 454                 while ((c = getchar()) != EOF && c != '\n');
 455         ungetc(c,stdin);
 456         inode1 = -1;
 457         while (scanf("%"SCNuMAX,&inode) == 1) {
 458                 if (inode > maxino) {
 459                         warnx("illegal inode %ju",(uintmax_t)inode);
 460                         return;
 461                 }
 462                 errno = 0;
 463                 if ((ip = get_inode(fd,super,inode))
 464                     && !isfree(ip)) {
 465                         printf("%s\t",user(ip->di_uid)->name);
 466                         /* now skip whitespace */
 467                         while ((c = getchar()) == ' ' || c == '\t');
 468                         /* and print out the remainder of the input line */
 469                         while (c != EOF && c != '\n') {
 470                                 putchar(c);
 471                                 c = getchar();
 472                         }
 473                         putchar('\n');
 474                         inode1 = inode;
 475                 } else {
 476                         if (errno) {
 477                                 err(1, "%s", name);
 478                         }
 479                         /* skip this line */
 480                         while ((c = getchar()) != EOF && c != '\n');
 481                 }
 482                 if (c == EOF)
 483                         break;
 484         }
 485 }
 486
 487 static void
 488 usage(void)
 489 {
 490 #ifdef  COMPAT
 491         fprintf(stderr,"usage: quot [-nfcvha] [filesystem ...]\n");
 492 #else   /* COMPAT */
 493         fprintf(stderr,"usage: quot [-acfhknv] [filesystem ...]\n");
 494 #endif  /* COMPAT */
 495         exit(1);
 496 }
 497
 498 static char superblock[SBSIZE];
 499
 500 void
 501 quot(char *name, char *mp)
 502 {
 503         int fd;
 504
 505         get_inode(-1, NULL, 0);         /* flush cache */
 506         inituser();
 507         initfsizes();
 508         if ((fd = open(name,0)) < 0
 509             || lseek(fd,SBOFF,0) != SBOFF
 510             || read(fd,superblock,SBSIZE) != SBSIZE) {
 511                 warn("%s", name);
 512                 close(fd);
 513                 return;
 514         }
 515         if (((struct fs *)superblock)->fs_magic != FS_MAGIC) {
 516                 warnx("%s: not a BSD filesystem",name);
 517                 close(fd);
 518                 return;
 519         }
 520         printf("%s:",name);
 521         if (mp)
 522                 printf(" (%s)",mp);
 523         putchar('\n');
 524         (*func)(fd,(struct fs *)superblock,name);
 525         close(fd);
 526 }
 527
 528 int
 529 main(int argc, char **argv)
 530 {
 531         char all = 0;
 532         struct statfs *mp;
 533         struct fstab *fs;
 534         char dev[MNAMELEN + 1];
 535         char *nm;
 536         int cnt;
 537
 538         func = douser;
 539 #ifndef COMPAT
 540         header = getbsize(&headerlen,&blocksize);
 541 #endif
 542         while (--argc > 0 && **++argv == '-') {
 543                 while (*++*argv) {
 544                         switch (**argv) {
 545                         case 'n':
 546                                 func = donames;
 547                                 break;
 548                         case 'c':
 549                                 func = dofsizes;
 550                                 break;
 551                         case 'a':
 552                                 all = 1;
 553                                 break;
 554                         case 'f':
 555                                 count = 1;
 556                                 break;
 557                         case 'h':
 558                                 estimate = 1;
 559                                 break;
 560 #ifndef COMPAT
 561                         case 'k':
 562                                 blocksize = 1024;
 563                                 break;
 564 #endif  /* COMPAT */
 565                         case 'v':
 566                                 unused = 1;
 567                                 break;
 568                         default:
 569                                 usage();
 570                         }
 571                 }
 572         }
 573         if (all) {
 574                 cnt = getmntinfo(&mp,MNT_NOWAIT);
 575                 for (; --cnt >= 0; mp++) {
 576                         if (!strncmp(mp->f_fstypename, "ufs", MFSNAMELEN)) {
 577                                 if ((nm = strrchr(mp->f_mntfromname,'/'))) {
 578                                         sprintf(dev,"%s%s",_PATH_DEV,nm + 1);
 579                                         nm = dev;
 580                                 } else
 581                                         nm = mp->f_mntfromname;
 582                                 quot(nm,mp->f_mntonname);
 583                         }
 584                 }
 585         }
 586         while (--argc >= 0) {
 587                 if ((fs = getfsfile(*argv)) != NULL)
 588                         quot(fs->fs_spec, 0);
 589                 else
 590                         quot(*argv,0);
 591                 argv++;
 592         }
 593         return 0;
 594 }