- Add lwkt_serialize_adaptive_enter(9), it is same as lwkt_serialize_enter(9)
[dfdiff.git] / usr.bin / quota / quota.c
blobd514e8523b467e1466d547a37abecf14f54ba65e
1 /*
2 * Copyright (c) 1980, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Robert Elz at The University of Melbourne.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
36 * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)quota.c 8.1 (Berkeley) 6/6/93
38 * $FreeBSD: src/usr.bin/quota/quota.c,v 1.11.2.5 2002/11/30 23:54:21 iedowse Exp $
39 * $DragonFly: src/usr.bin/quota/quota.c,v 1.7 2006/04/03 01:59:28 dillon Exp $
43 * Disk quota reporting program.
46 #include <sys/param.h>
47 #include <sys/types.h>
48 #include <sys/file.h>
49 #include <sys/stat.h>
50 #include <sys/mount.h>
51 #include <sys/socket.h>
53 #include <rpc/rpc.h>
54 #include <rpc/pmap_prot.h>
55 #include <rpcsvc/rquota.h>
57 #include <vfs/ufs/quota.h>
59 #include <ctype.h>
60 #include <err.h>
61 #include <fstab.h>
62 #include <grp.h>
63 #include <netdb.h>
64 #include <pwd.h>
65 #include <stdio.h>
66 #include <stdlib.h>
67 #include <string.h>
68 #include <unistd.h>
70 const char *qfname = QUOTAFILENAME;
71 const char *qfextension[] = INITQFNAMES;
73 struct quotause {
74 struct quotause *next;
75 long flags;
76 struct ufs_dqblk dqblk;
77 char fsname[MAXPATHLEN + 1];
79 #define FOUND 0x01
81 static const char *timeprt(time_t);
82 static struct quotause *getprivs(long, int);
83 static void usage(void);
84 static void showuid(u_long);
85 static void showgid(u_long);
86 static int alldigits(char *);
87 static void showusrname(char *);
88 static void showgrpname(char *);
89 static void showquotas(int, u_long, const char *);
90 static void heading(int, u_long, const char *, const char *);
91 static int ufshasquota(struct fstab *, int, char **);
92 static int getufsquota(struct fstab *, struct quotause *, long, int);
93 static int getnfsquota(struct statfs *, struct quotause *, long, int);
94 static int callaurpc(char *, int, int, int, xdrproc_t, char *, xdrproc_t,
95 char *);
97 int lflag;
98 int qflag;
99 int vflag;
102 main(int argc, char *argv[])
104 int ngroups;
105 gid_t mygid, gidset[NGROUPS];
106 int i, gflag = 0, uflag = 0;
107 char ch;
109 while ((ch = getopt(argc, argv, "glquv")) != -1) {
110 switch(ch) {
111 case 'g':
112 gflag++;
113 break;
114 case 'l':
115 lflag++;
116 break;
117 case 'q':
118 qflag++;
119 break;
120 case 'u':
121 uflag++;
122 break;
123 case 'v':
124 vflag++;
125 break;
126 default:
127 usage();
130 argc -= optind;
131 argv += optind;
132 if (!uflag && !gflag)
133 uflag++;
134 if (argc == 0) {
135 if (uflag)
136 showuid(getuid());
137 if (gflag) {
138 mygid = getgid();
139 ngroups = getgroups(NGROUPS, gidset);
140 if (ngroups < 0)
141 err(1, "getgroups");
142 showgid(mygid);
143 for (i = 0; i < ngroups; i++)
144 if (gidset[i] != mygid)
145 showgid(gidset[i]);
147 return(0);
149 if (uflag && gflag)
150 usage();
151 if (uflag) {
152 for (; argc > 0; argc--, argv++) {
153 if (alldigits(*argv))
154 showuid(atoi(*argv));
155 else
156 showusrname(*argv);
158 return(0);
160 if (gflag) {
161 for (; argc > 0; argc--, argv++) {
162 if (alldigits(*argv))
163 showgid(atoi(*argv));
164 else
165 showgrpname(*argv);
168 return(0);
171 static void
172 usage(void)
175 fprintf(stderr, "%s\n%s\n%s\n",
176 "usage: quota [-glu] [-v | -q]",
177 " quota [-lu] [-v | -q] user ...",
178 " quota -g [-l] [-v | -q] group ...");
179 exit(1);
183 * Print out quotas for a specified user identifier.
185 static void
186 showuid(u_long uid)
188 struct passwd *pwd = getpwuid(uid);
189 u_long myuid;
190 const char *name;
192 if (pwd == NULL)
193 name = "(no account)";
194 else
195 name = pwd->pw_name;
196 myuid = getuid();
197 if (uid != myuid && myuid != 0) {
198 printf("quota: %s (uid %lu): permission denied\n", name, uid);
199 return;
201 showquotas(USRQUOTA, uid, name);
205 * Print out quotas for a specifed user name.
207 static void
208 showusrname(char *name)
210 struct passwd *pwd = getpwnam(name);
211 u_long myuid;
213 if (pwd == NULL) {
214 warnx("%s: unknown user", name);
215 return;
217 myuid = getuid();
218 if (pwd->pw_uid != myuid && myuid != 0) {
219 warnx("%s (uid %u): permission denied", name, pwd->pw_uid);
220 return;
222 showquotas(USRQUOTA, pwd->pw_uid, name);
226 * Print out quotas for a specified group identifier.
228 static void
229 showgid(u_long gid)
231 struct group *grp = getgrgid(gid);
232 int ngroups;
233 gid_t mygid, gidset[NGROUPS];
234 int i;
235 const char *name;
237 if (grp == NULL)
238 name = "(no entry)";
239 else
240 name = grp->gr_name;
241 mygid = getgid();
242 ngroups = getgroups(NGROUPS, gidset);
243 if (ngroups < 0) {
244 warn("getgroups");
245 return;
247 if (gid != mygid) {
248 for (i = 0; i < ngroups; i++)
249 if (gid == gidset[i])
250 break;
251 if (i >= ngroups && getuid() != 0) {
252 warnx("%s (gid %lu): permission denied", name, gid);
253 return;
256 showquotas(GRPQUOTA, gid, name);
260 * Print out quotas for a specifed group name.
262 static void
263 showgrpname(char *name)
265 struct group *grp = getgrnam(name);
266 int ngroups;
267 gid_t mygid, gidset[NGROUPS];
268 int i;
270 if (grp == NULL) {
271 warnx("%s: unknown group", name);
272 return;
274 mygid = getgid();
275 ngroups = getgroups(NGROUPS, gidset);
276 if (ngroups < 0) {
277 warn("getgroups");
278 return;
280 if (grp->gr_gid != mygid) {
281 for (i = 0; i < ngroups; i++)
282 if (grp->gr_gid == gidset[i])
283 break;
284 if (i >= ngroups && getuid() != 0) {
285 warnx("%s (gid %u): permission denied", name,
286 grp->gr_gid);
287 return;
290 showquotas(GRPQUOTA, grp->gr_gid, name);
293 static void
294 showquotas(int type, u_long id, const char *name)
296 struct quotause *qup;
297 struct quotause *quplist;
298 const char *msgi, *msgb;
299 const char *nam;
300 int lines = 0;
301 static time_t now;
303 if (now == 0)
304 time(&now);
305 quplist = getprivs(id, type);
306 for (qup = quplist; qup; qup = qup->next) {
307 if (!vflag &&
308 qup->dqblk.dqb_isoftlimit == 0 &&
309 qup->dqblk.dqb_ihardlimit == 0 &&
310 qup->dqblk.dqb_bsoftlimit == 0 &&
311 qup->dqblk.dqb_bhardlimit == 0)
312 continue;
313 msgi = (char *)0;
314 if (qup->dqblk.dqb_ihardlimit &&
315 qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_ihardlimit)
316 msgi = "File limit reached on";
317 else if (qup->dqblk.dqb_isoftlimit &&
318 qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_isoftlimit) {
319 if (qup->dqblk.dqb_itime > now)
320 msgi = "In file grace period on";
321 else
322 msgi = "Over file quota on";
324 msgb = (char *)0;
325 if (qup->dqblk.dqb_bhardlimit &&
326 qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bhardlimit)
327 msgb = "Block limit reached on";
328 else if (qup->dqblk.dqb_bsoftlimit &&
329 qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit) {
330 if (qup->dqblk.dqb_btime > now)
331 msgb = "In block grace period on";
332 else
333 msgb = "Over block quota on";
335 if (qflag) {
336 if ((msgi != (char *)0 || msgb != (char *)0) &&
337 lines++ == 0)
338 heading(type, id, name, "");
339 if (msgi != (char *)0)
340 printf("\t%s %s\n", msgi, qup->fsname);
341 if (msgb != (char *)0)
342 printf("\t%s %s\n", msgb, qup->fsname);
343 continue;
345 if (vflag ||
346 qup->dqblk.dqb_curblocks ||
347 qup->dqblk.dqb_curinodes) {
348 if (lines++ == 0)
349 heading(type, id, name, "");
350 nam = qup->fsname;
351 if (strlen(qup->fsname) > 15) {
352 printf("%s\n", qup->fsname);
353 nam = "";
355 printf("%15s%8lu%c%7lu%8lu%8s"
356 , nam
357 , (u_long) (dbtob(qup->dqblk.dqb_curblocks)
358 / 1024)
359 , (msgb == (char *)0) ? ' ' : '*'
360 , (u_long) (dbtob(qup->dqblk.dqb_bsoftlimit)
361 / 1024)
362 , (u_long) (dbtob(qup->dqblk.dqb_bhardlimit)
363 / 1024)
364 , (msgb == (char *)0) ? ""
365 :timeprt(qup->dqblk.dqb_btime));
366 printf("%8lu%c%7lu%8lu%8s\n"
367 , (u_long)qup->dqblk.dqb_curinodes
368 , (msgi == (char *)0) ? ' ' : '*'
369 , (u_long)qup->dqblk.dqb_isoftlimit
370 , (u_long)qup->dqblk.dqb_ihardlimit
371 , (msgi == (char *)0) ? ""
372 : timeprt(qup->dqblk.dqb_itime)
374 continue;
377 if (!qflag && lines == 0)
378 heading(type, id, name, "none");
381 static void
382 heading(int type, u_long id, const char *name, const char *tag)
385 printf("Disk quotas for %s %s (%cid %lu): %s\n", qfextension[type],
386 name, *qfextension[type], id, tag);
387 if (!qflag && tag[0] == '\0') {
388 printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n"
389 , "Filesystem"
390 , "usage"
391 , "quota"
392 , "limit"
393 , "grace"
394 , "files"
395 , "quota"
396 , "limit"
397 , "grace"
403 * Calculate the grace period and return a printable string for it.
405 static const char *
406 timeprt(time_t seconds)
408 time_t hours, minutes;
409 static char buf[20];
410 static time_t now;
412 if (now == 0)
413 time(&now);
414 if (now > seconds)
415 return ("none");
416 seconds -= now;
417 minutes = (seconds + 30) / 60;
418 hours = (minutes + 30) / 60;
419 if (hours >= 36) {
420 sprintf(buf, "%lddays", ((long)hours + 12) / 24);
421 return (buf);
423 if (minutes >= 60) {
424 sprintf(buf, "%2ld:%ld", (long)minutes / 60,
425 (long)minutes % 60);
426 return (buf);
428 sprintf(buf, "%2ld", (long)minutes);
429 return (buf);
433 * Collect the requested quota information.
435 static struct quotause *
436 getprivs(long id, int quotatype)
438 struct quotause *qup, *quptail = NULL;
439 struct fstab *fs;
440 struct quotause *quphead;
441 struct statfs *fst;
442 int nfst, i;
444 qup = quphead = (struct quotause *)0;
446 nfst = getmntinfo(&fst, MNT_NOWAIT);
447 if (nfst == 0)
448 errx(2, "no filesystems mounted!");
449 setfsent();
450 for (i=0; i<nfst; i++) {
451 if (qup == NULL) {
452 if ((qup = (struct quotause *)malloc(sizeof *qup))
453 == NULL)
454 errx(2, "out of memory");
456 if (strcmp(fst[i].f_fstypename, "nfs") == 0) {
457 if (lflag)
458 continue;
459 if (getnfsquota(&fst[i], qup, id, quotatype)
460 == 0)
461 continue;
462 } else if (strcmp(fst[i].f_fstypename, "ufs") == 0) {
464 * XXX
465 * UFS filesystems must be in /etc/fstab, and must
466 * indicate that they have quotas on (?!) This is quite
467 * unlike SunOS where quotas can be enabled/disabled
468 * on a filesystem independent of /etc/fstab, and it
469 * will still print quotas for them.
471 if ((fs = getfsspec(fst[i].f_mntfromname)) == NULL)
472 continue;
473 if (getufsquota(fs, qup, id, quotatype) == 0)
474 continue;
475 } else
476 continue;
477 strcpy(qup->fsname, fst[i].f_mntonname);
478 if (quphead == NULL)
479 quphead = qup;
480 else
481 quptail->next = qup;
482 quptail = qup;
483 quptail->next = 0;
484 qup = NULL;
486 if (qup)
487 free(qup);
488 endfsent();
489 return (quphead);
493 * Check to see if a particular quota is to be enabled.
495 static int
496 ufshasquota(struct fstab *fs, int type, char **qfnamep)
498 static char initname, usrname[100], grpname[100];
499 static char buf[BUFSIZ];
500 char *opt, *cp;
502 if (!initname) {
503 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
504 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
505 initname = 1;
507 strcpy(buf, fs->fs_mntops);
508 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
509 if ((cp = strchr(opt, '=')))
510 *cp++ = '\0';
511 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
512 break;
513 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
514 break;
516 if (!opt)
517 return (0);
518 if (cp) {
519 *qfnamep = cp;
520 return (1);
522 sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
523 *qfnamep = buf;
524 return (1);
527 static int
528 getufsquota(struct fstab *fs, struct quotause *qup, long id, int quotatype)
530 char *qfpathname;
531 int fd, qcmd;
533 qcmd = QCMD(Q_GETQUOTA, quotatype);
534 if (!ufshasquota(fs, quotatype, &qfpathname))
535 return (0);
537 if (quotactl(fs->fs_file, qcmd, id, (char *)&qup->dqblk) != 0) {
538 if ((fd = open(qfpathname, O_RDONLY)) < 0) {
539 warn("%s", qfpathname);
540 return (0);
542 lseek(fd, (off_t)(id * sizeof(struct ufs_dqblk)), L_SET);
543 switch (read(fd, &qup->dqblk, sizeof(struct ufs_dqblk))) {
544 case 0: /* EOF */
546 * Convert implicit 0 quota (EOF)
547 * into an explicit one (zero'ed dqblk)
549 bzero(&qup->dqblk, sizeof(struct ufs_dqblk));
550 break;
551 case sizeof(struct ufs_dqblk): /* OK */
552 break;
553 default: /* ERROR */
554 warn("read error: %s", qfpathname);
555 close(fd);
556 return (0);
558 close(fd);
560 return (1);
563 static int
564 getnfsquota(struct statfs *fst, struct quotause *qup, long id, int quotatype)
566 struct getquota_args gq_args;
567 struct getquota_rslt gq_rslt;
568 struct ufs_dqblk *dqp = &qup->dqblk;
569 struct timeval tv;
570 char *cp;
572 if (fst->f_flags & MNT_LOCAL)
573 return (0);
576 * rpc.rquotad does not support group quotas
578 if (quotatype != USRQUOTA)
579 return (0);
582 * must be some form of "hostname:/path"
584 cp = strchr(fst->f_mntfromname, ':');
585 if (cp == NULL) {
586 warnx("cannot find hostname for %s", fst->f_mntfromname);
587 return (0);
590 *cp = '\0';
591 if (*(cp+1) != '/') {
592 *cp = ':';
593 return (0);
596 /* Avoid attempting the RPC for special amd(8) filesystems. */
597 if (strncmp(fst->f_mntfromname, "pid", 3) == 0 &&
598 strchr(fst->f_mntfromname, '@') != NULL) {
599 *cp = ':';
600 return (0);
603 gq_args.gqa_pathp = cp + 1;
604 gq_args.gqa_uid = id;
605 if (callaurpc(fst->f_mntfromname, RQUOTAPROG, RQUOTAVERS,
606 RQUOTAPROC_GETQUOTA, (xdrproc_t)xdr_getquota_args, (char *)&gq_args,
607 (xdrproc_t)xdr_getquota_rslt, (char *)&gq_rslt) != 0) {
608 *cp = ':';
609 return (0);
612 switch (gq_rslt.status) {
613 case Q_NOQUOTA:
614 break;
615 case Q_EPERM:
616 warnx("quota permission error, host: %s",
617 fst->f_mntfromname);
618 break;
619 case Q_OK:
620 gettimeofday(&tv, NULL);
621 /* blocks*/
622 dqp->dqb_bhardlimit =
623 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit *
624 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE;
625 dqp->dqb_bsoftlimit =
626 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit *
627 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE;
628 dqp->dqb_curblocks =
629 gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks *
630 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE;
631 /* inodes */
632 dqp->dqb_ihardlimit =
633 gq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit;
634 dqp->dqb_isoftlimit =
635 gq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit;
636 dqp->dqb_curinodes =
637 gq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles;
638 /* grace times */
639 dqp->dqb_btime =
640 tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft;
641 dqp->dqb_itime =
642 tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft;
643 *cp = ':';
644 return (1);
645 default:
646 warnx("bad rpc result, host: %s", fst->f_mntfromname);
647 break;
649 *cp = ':';
650 return (0);
653 static int
654 callaurpc(char *host, int prognum, int versnum, int procnum,
655 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
657 struct sockaddr_in server_addr;
658 enum clnt_stat clnt_stat;
659 struct hostent *hp;
660 struct timeval timeout, tottimeout;
662 CLIENT *client = NULL;
663 int sock = RPC_ANYSOCK;
665 if ((hp = gethostbyname(host)) == NULL)
666 return ((int) RPC_UNKNOWNHOST);
667 timeout.tv_usec = 0;
668 timeout.tv_sec = 6;
669 bcopy(hp->h_addr, &server_addr.sin_addr,
670 MIN(hp->h_length,(int)sizeof(server_addr.sin_addr)));
671 server_addr.sin_family = AF_INET;
672 server_addr.sin_port = 0;
674 if ((client = clntudp_create(&server_addr, prognum,
675 versnum, timeout, &sock)) == NULL)
676 return ((int) rpc_createerr.cf_stat);
678 client->cl_auth = authunix_create_default();
679 tottimeout.tv_sec = 25;
680 tottimeout.tv_usec = 0;
681 clnt_stat = clnt_call(client, procnum, inproc, in,
682 outproc, out, tottimeout);
684 return ((int) clnt_stat);
687 static int
688 alldigits(char *s)
690 int c;
692 c = *s++;
693 do {
694 if (!isdigit(c))
695 return (0);
696 } while ((c = *s++));
697 return (1);