ae7967941db77e1320a65c3a4beacc522216dba3
[dragonfly.git] / 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 1.5 2005/12/05 02:40:28 swildner Exp $
33  */
34
35 #include <sys/param.h>
36 #include <sys/mount.h>
37 #include <sys/time.h>
38 #include <vfs/ufs/fs.h>
39 #include <vfs/ufs/quota.h>
40 #include <vfs/ufs/inode.h>
41
42 #include <err.h>
43 #include <fcntl.h>
44 #include <fstab.h>
45 #include <errno.h>
46 #include <paths.h>
47 #include <pwd.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <unistd.h>
52
53 /* some flags of what to do: */
54 static char estimate;
55 static char count;
56 static char unused;
57 static void (*func)(int, struct fs *, char *);
58 static long blocksize;
59 static char *header;
60 static int headerlen;
61
62 static struct dinode *get_inode(int, struct fs *, ino_t);
63 static int      virtualblocks(struct fs *, struct dinode *);
64 static int      isfree(struct dinode *);
65 static void     inituser(void);
66 static void     usrrehash(void);
67 static struct user *user(uid_t);
68 static int      cmpusers(const void *, const void *);
69 static void     uses(uid_t, daddr_t, time_t);
70 static void     initfsizes(void);
71 static void     dofsizes(int, struct fs *, char *);
72 static void     douser(int, struct fs *, char *);
73 static void     donames(int, struct fs *, char *);
74 static void     usage(void);
75 static void     quot(char *, char *);
76
77 /*
78  * Original BSD quot doesn't round to number of frags/blocks,
79  * doesn't account for indirection blocks and gets it totally
80  * wrong if the size is a multiple of the blocksize.
81  * The new code always counts the number of 512 byte blocks
82  * instead of the number of kilobytes and converts them to
83  * kByte when done (on request).
84  *
85  * Due to the size of modern disks, we must cast intermediate
86  * values to 64 bits to prevent potential overflows.
87  */
88 #ifdef  COMPAT
89 #define SIZE(n) (n)
90 #else
91 #define SIZE(n) ((int)(((quad_t)(n) * 512 + blocksize - 1)/blocksize))
92 #endif
93
94 #define INOCNT(fs)      ((fs)->fs_ipg)
95 #define INOSZ(fs)       (sizeof(struct dinode) * INOCNT(fs))
96
97 static struct dinode *
98 get_inode(int fd, struct fs *super, ino_t ino)
99 {
100         static struct dinode *ip;
101         static ino_t last;
102         
103         if (fd < 0) {           /* flush cache */
104                 if (ip) {
105                         free(ip);
106                         ip = 0;
107                 }
108                 return 0;
109         }
110         
111         if (!ip || ino < last || ino >= last + INOCNT(super)) {
112                 if (!ip
113                     && !(ip = (struct dinode *)malloc(INOSZ(super))))
114                         errx(1, "allocate inodes");
115                 last = (ino / INOCNT(super)) * INOCNT(super);
116                 if (lseek(fd, (off_t)ino_to_fsba(super, last) << super->fs_fshift, 0) < (off_t)0
117                     || read(fd,ip,INOSZ(super)) != (ssize_t)INOSZ(super))
118                         err(1, "read inodes");
119         }
120         
121         return ip + ino % INOCNT(super);
122 }
123
124 #ifdef  COMPAT
125 #define actualblocks(super,ip)  ((ip)->di_blocks/2)
126 #else
127 #define actualblocks(super,ip)  ((ip)->di_blocks)
128 #endif
129
130 static int
131 virtualblocks(struct fs *super, struct dinode *ip)
132 {
133         off_t nblk, sz;
134         
135         sz = ip->di_size;
136 #ifdef  COMPAT
137         if (lblkno(super,sz) >= NDADDR) {
138                 nblk = blkroundup(super,sz);
139                 if (sz == nblk)
140                         nblk += super->fs_bsize;
141         }
142         
143         return sz / 1024;
144         
145 #else   /* COMPAT */
146         
147         if (lblkno(super,sz) >= NDADDR) {
148                 nblk = blkroundup(super,sz);
149                 sz = lblkno(super,nblk);
150                 sz = (sz - NDADDR + NINDIR(super) - 1) / NINDIR(super);
151                 while (sz > 0) {
152                         nblk += sz * super->fs_bsize;
153                         /* sz - 1 rounded up */
154                         sz = (sz - 1 + NINDIR(super) - 1) / NINDIR(super);
155                 }
156         } else
157                 nblk = fragroundup(super,sz);
158         
159         return nblk / 512;
160 #endif  /* COMPAT */
161 }
162
163 static int
164 isfree(struct dinode *ip)
165 {
166 #ifdef  COMPAT
167         return (ip->di_mode&IFMT) == 0;
168 #else   /* COMPAT */
169         
170         switch (ip->di_mode&IFMT) {
171         case IFIFO:
172         case IFLNK:             /* should check FASTSYMLINK? */
173         case IFDIR:
174         case IFREG:
175                 return 0;
176         default:
177                 return 1;
178         }
179 #endif
180 }
181
182 static struct user {
183         uid_t uid;
184         char *name;
185         daddr_t space;
186         long count;
187         daddr_t spc30;
188         daddr_t spc60;
189         daddr_t spc90;
190 } *users;
191 static int nusers;
192
193 static void
194 inituser(void)
195 {
196         int i;
197         struct user *usr;
198         
199         if (!nusers) {
200                 nusers = 8;
201                 if (!(users =
202                     (struct user *)calloc(nusers,sizeof(struct user))))
203                         errx(1, "allocate users");
204         } else {
205                 for (usr = users, i = nusers; --i >= 0; usr++) {
206                         usr->space = usr->spc30 = usr->spc60 = usr->spc90 = 0;
207                         usr->count = 0;
208                 }
209         }
210 }
211
212 static void
213 usrrehash(void)
214 {
215         int i;
216         struct user *usr, *usrn;
217         struct user *svusr;
218
219         svusr = users;
220         nusers <<= 1;
221         if (!(users = (struct user *)calloc(nusers,sizeof(struct user))))
222                 errx(1, "allocate users");
223         for (usr = svusr, i = nusers >> 1; --i >= 0; usr++) {
224                 for (usrn = users + (usr->uid&(nusers - 1)); usrn->name;
225                     usrn--) {
226                         if (usrn <= users)
227                                 usrn = users + nusers;
228                 }
229                 *usrn = *usr;
230         }
231 }
232
233 static struct user *
234 user(uid_t uid)
235 {
236         struct user *usr;
237         int i;
238         struct passwd *pwd;
239
240         while (1) {
241                 for (usr = users + (uid&(nusers - 1)), i = nusers; --i >= 0;
242                     usr--) {
243                         if (!usr->name) {
244                                 usr->uid = uid;
245                                 
246                                 if (!(pwd = getpwuid(uid))) {
247                                         if ((usr->name = (char *)malloc(7)))
248                                                 sprintf(usr->name,"#%d",uid);
249                                 } else {
250                                         if ((usr->name = (char *)
251                                             malloc(strlen(pwd->pw_name) + 1)))
252                                                 strcpy(usr->name,pwd->pw_name);
253                                 }
254                                 if (!usr->name)
255                                         errx(1, "allocate users");
256                                 
257                                 return usr;
258                                 
259                         } else if (usr->uid == uid)
260                                 return usr;
261
262                         if (usr <= users)
263                                 usr = users + nusers;
264                 }
265                 usrrehash();
266         }
267 }
268
269 static int
270 cmpusers(const void *v1, const void *v2)
271 {
272         const struct user *u1, *u2;
273         u1 = (const struct user *)v1;
274         u2 = (const struct user *)v2;
275
276         return u2->space - u1->space;
277 }
278
279 #define sortusers(users)        (qsort((users),nusers,sizeof(struct user), \
280                                     cmpusers))
281
282 static void
283 uses(uid_t uid, daddr_t blks, time_t act)
284 {
285         static time_t today;
286         struct user *usr;
287
288         if (!today)
289                 time(&today);
290
291         usr = user(uid);
292         usr->count++;
293         usr->space += blks;
294
295         if (today - act > 90L * 24L * 60L * 60L)
296                 usr->spc90 += blks;
297         if (today - act > 60L * 24L * 60L * 60L)
298                 usr->spc60 += blks;
299         if (today - act > 30L * 24L * 60L * 60L)
300                 usr->spc30 += blks;
301 }
302
303 #ifdef  COMPAT
304 #define FSZCNT  500
305 #else
306 #define FSZCNT  512
307 #endif
308 struct fsizes {
309         struct fsizes *fsz_next;
310         daddr_t fsz_first, fsz_last;
311         ino_t fsz_count[FSZCNT];
312         daddr_t fsz_sz[FSZCNT];
313 } *fsizes;
314
315 static void
316 initfsizes(void)
317 {
318         struct fsizes *fp;
319         int i;
320         
321         for (fp = fsizes; fp; fp = fp->fsz_next) {
322                 for (i = FSZCNT; --i >= 0;) {
323                         fp->fsz_count[i] = 0;
324                         fp->fsz_sz[i] = 0;
325                 }
326         }
327 }
328
329 static void
330 dofsizes(int fd, struct fs *super, char *name)
331 {
332         ino_t inode, maxino;
333         struct dinode *ip;
334         daddr_t sz, ksz;
335         struct fsizes *fp, **fsp;
336         int i;
337
338         maxino = super->fs_ncg * super->fs_ipg - 1;
339 #ifdef  COMPAT
340         if (!(fsizes = (struct fsizes *)malloc(sizeof(struct fsizes))))
341                 errx(1, "allocate fsize structure");
342 #endif  /* COMPAT */
343         for (inode = 0; inode < maxino; inode++) {
344                 errno = 0;
345                 if ((ip = get_inode(fd,super,inode))
346 #ifdef  COMPAT
347                     && ((ip->di_mode&IFMT) == IFREG
348                         || (ip->di_mode&IFMT) == IFDIR)
349 #else   /* COMPAT */
350                     && !isfree(ip)
351 #endif  /* COMPAT */
352                     ) {
353                         sz = estimate ? virtualblocks(super,ip) :
354                             actualblocks(super,ip);
355 #ifdef  COMPAT
356                         if (sz >= FSZCNT) {
357                                 fsizes->fsz_count[FSZCNT-1]++;
358                                 fsizes->fsz_sz[FSZCNT-1] += sz;
359                         } else {
360                                 fsizes->fsz_count[sz]++;
361                                 fsizes->fsz_sz[sz] += sz;
362                         }
363 #else   /* COMPAT */
364                         ksz = SIZE(sz);
365                         for (fsp = &fsizes; (fp = *fsp); fsp = &fp->fsz_next) {
366                                 if (ksz < fp->fsz_last)
367                                         break;
368                         }
369                         if (!fp || ksz < fp->fsz_first) {
370                                 if (!(fp = (struct fsizes *)
371                                     malloc(sizeof(struct fsizes))))
372                                         errx(1, "allocate fsize structure");
373                                 fp->fsz_next = *fsp;
374                                 *fsp = fp;
375                                 fp->fsz_first = (ksz / FSZCNT) * FSZCNT;
376                                 fp->fsz_last = fp->fsz_first + FSZCNT;
377                                 for (i = FSZCNT; --i >= 0;) {
378                                         fp->fsz_count[i] = 0;
379                                         fp->fsz_sz[i] = 0;
380                                 }
381                         }
382                         fp->fsz_count[ksz % FSZCNT]++;
383                         fp->fsz_sz[ksz % FSZCNT] += sz;
384 #endif  /* COMPAT */
385                 } else if (errno) {
386                         err(1, "%s", name);
387                 }
388         }
389         sz = 0;
390         for (fp = fsizes; fp; fp = fp->fsz_next) {
391                 for (i = 0; i < FSZCNT; i++) {
392                         if (fp->fsz_count[i])
393                                 printf("%d\t%d\t%d\n",fp->fsz_first + i,
394                                     fp->fsz_count[i],
395                                     SIZE(sz += fp->fsz_sz[i]));
396                 }
397         }
398 }
399
400 static void
401 douser(int fd, struct fs *super, char *name)
402 {
403         ino_t inode, maxino;
404         struct user *usr, *usrs;
405         struct dinode *ip;
406         int n;
407
408         maxino = super->fs_ncg * super->fs_ipg - 1;
409         for (inode = 0; inode < maxino; inode++) {
410                 errno = 0;
411                 if ((ip = get_inode(fd,super,inode))
412                     && !isfree(ip))
413                         uses(ip->di_uid,
414                             estimate ? virtualblocks(super,ip) :
415                                 actualblocks(super,ip),
416                             ip->di_atime);
417                 else if (errno) {
418                         err(1, "%s", name);
419                 }
420         }
421         if (!(usrs = (struct user *)malloc(nusers * sizeof(struct user))))
422                 errx(1, "allocate users");
423         bcopy(users,usrs,nusers * sizeof(struct user));
424         sortusers(usrs);
425         for (usr = usrs, n = nusers; --n >= 0 && usr->count; usr++) {
426                 printf("%5d",SIZE(usr->space));
427                 if (count)
428                         printf("\t%5ld",usr->count);
429                 printf("\t%-8s",usr->name);
430                 if (unused)
431                         printf("\t%5d\t%5d\t%5d",
432                                SIZE(usr->spc30),
433                                SIZE(usr->spc60),
434                                SIZE(usr->spc90));
435                 printf("\n");
436         }
437         free(usrs);
438 }
439
440 static void
441 donames(int fd, struct fs *super, char *name)
442 {
443         int c;
444         ino_t inode, inode1;
445         ino_t maxino;
446         struct dinode *ip;
447         
448         maxino = super->fs_ncg * super->fs_ipg - 1;
449         /* first skip the name of the filesystem */
450         while ((c = getchar()) != EOF && (c < '0' || c > '9'))
451                 while ((c = getchar()) != EOF && c != '\n');
452         ungetc(c,stdin);
453         inode1 = -1;
454         while (scanf("%u",&inode) == 1) {
455                 if (inode > maxino) {
456                         warnx("illegal inode %d",inode);
457                         return;
458                 }
459                 errno = 0;
460                 if ((ip = get_inode(fd,super,inode))
461                     && !isfree(ip)) {
462                         printf("%s\t",user(ip->di_uid)->name);
463                         /* now skip whitespace */
464                         while ((c = getchar()) == ' ' || c == '\t');
465                         /* and print out the remainder of the input line */
466                         while (c != EOF && c != '\n') {
467                                 putchar(c);
468                                 c = getchar();
469                         }
470                         putchar('\n');
471                         inode1 = inode;
472                 } else {
473                         if (errno) {
474                                 err(1, "%s", name);
475                         }
476                         /* skip this line */
477                         while ((c = getchar()) != EOF && c != '\n');
478                 }
479                 if (c == EOF)
480                         break;
481         }
482 }
483
484 static void
485 usage(void)
486 {
487 #ifdef  COMPAT
488         fprintf(stderr,"usage: quot [-nfcvha] [filesystem ...]\n");
489 #else   /* COMPAT */
490         fprintf(stderr,"usage: quot [-acfhknv] [filesystem ...]\n");
491 #endif  /* COMPAT */
492         exit(1);
493 }
494
495 static char superblock[SBSIZE];
496
497 void
498 quot(char *name, char *mp)
499 {
500         int fd;
501
502         get_inode(-1, NULL, 0);         /* flush cache */
503         inituser();
504         initfsizes();
505         if ((fd = open(name,0)) < 0
506             || lseek(fd,SBOFF,0) != SBOFF
507             || read(fd,superblock,SBSIZE) != SBSIZE) {
508                 warn("%s", name);
509                 close(fd);
510                 return;
511         }
512         if (((struct fs *)superblock)->fs_magic != FS_MAGIC) {
513                 warnx("%s: not a BSD filesystem",name);
514                 close(fd);
515                 return;
516         }
517         printf("%s:",name);
518         if (mp)
519                 printf(" (%s)",mp);
520         putchar('\n');
521         (*func)(fd,(struct fs *)superblock,name);
522         close(fd);
523 }
524
525 int
526 main(int argc, char **argv)
527 {
528         char all = 0;
529         struct statfs *mp;
530         struct fstab *fs;
531         char dev[MNAMELEN + 1];
532         char *nm;
533         int cnt;
534
535         func = douser;
536 #ifndef COMPAT
537         header = getbsize(&headerlen,&blocksize);
538 #endif
539         while (--argc > 0 && **++argv == '-') {
540                 while (*++*argv) {
541                         switch (**argv) {
542                         case 'n':
543                                 func = donames;
544                                 break;
545                         case 'c':
546                                 func = dofsizes;
547                                 break;
548                         case 'a':
549                                 all = 1;
550                                 break;
551                         case 'f':
552                                 count = 1;
553                                 break;
554                         case 'h':
555                                 estimate = 1;
556                                 break;
557 #ifndef COMPAT
558                         case 'k':
559                                 blocksize = 1024;
560                                 break;
561 #endif  /* COMPAT */
562                         case 'v':
563                                 unused = 1;
564                                 break;
565                         default:
566                                 usage();
567                         }
568                 }
569         }
570         if (all) {
571                 cnt = getmntinfo(&mp,MNT_NOWAIT);
572                 for (; --cnt >= 0; mp++) {
573                         if (!strncmp(mp->f_fstypename, "ufs", MFSNAMELEN)) {
574                                 if ((nm = strrchr(mp->f_mntfromname,'/'))) {
575                                         sprintf(dev,"%s%s",_PATH_DEV,nm + 1);
576                                         nm = dev;
577                                 } else
578                                         nm = mp->f_mntfromname;
579                                 quot(nm,mp->f_mntonname);
580                         }
581                 }
582         }
583         while (--argc >= 0) {
584                 if ((fs = getfsfile(*argv)) != NULL)
585                         quot(fs->fs_spec, 0);
586                 else
587                         quot(*argv,0);
588                 argv++;
589         }
590         return 0;
591 }