quota.c revision 1.10
1 /* 2 * Copyright (c) 1980, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Robert Elz at The University of Melbourne. 7 * 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. 23 * 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. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1980, 1990, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 /*static char sccsid[] = "from: @(#)quota.c 8.1 (Berkeley) 6/6/93";*/ 45 static char rcsid[] = "$Id: quota.c,v 1.10 1996/02/01 02:34:36 jtc Exp $"; 46 #endif /* not lint */ 47 48 /* 49 * Disk quota reporting program. 50 */ 51 #include <sys/param.h> 52 #include <sys/types.h> 53 #include <sys/file.h> 54 #include <sys/stat.h> 55 #include <sys/mount.h> 56 #include <sys/socket.h> 57 #include <ufs/ufs/quota.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <fstab.h> 61 #include <ctype.h> 62 #include <string.h> 63 #include <pwd.h> 64 #include <grp.h> 65 #include <errno.h> 66 67 #include <netdb.h> 68 #include <rpc/rpc.h> 69 #include <rpc/pmap_prot.h> 70 #include <rpcsvc/rquota.h> 71 72 char *qfname = QUOTAFILENAME; 73 char *qfextension[] = INITQFNAMES; 74 75 struct quotause { 76 struct quotause *next; 77 long flags; 78 struct dqblk dqblk; 79 char fsname[MAXPATHLEN + 1]; 80 }; 81 #define FOUND 0x01 82 83 char *timeprt __P((time_t seconds)); 84 struct quotause *getprivs __P((long id, int quotatype)); 85 86 int qflag; 87 int vflag; 88 89 main(argc, argv) 90 char *argv[]; 91 { 92 int ngroups; 93 gid_t mygid, gidset[NGROUPS]; 94 int i, gflag = 0, uflag = 0; 95 char ch; 96 extern char *optarg; 97 extern int optind, errno; 98 99 while ((ch = getopt(argc, argv, "ugvq")) != EOF) { 100 switch(ch) { 101 case 'g': 102 gflag++; 103 break; 104 case 'u': 105 uflag++; 106 break; 107 case 'v': 108 vflag++; 109 break; 110 case 'q': 111 qflag++; 112 break; 113 default: 114 usage(); 115 } 116 } 117 argc -= optind; 118 argv += optind; 119 if (!uflag && !gflag) 120 uflag++; 121 if (argc == 0) { 122 if (uflag) 123 showuid(getuid()); 124 if (gflag) { 125 mygid = getgid(); 126 ngroups = getgroups(NGROUPS, gidset); 127 if (ngroups < 0) { 128 perror("quota: getgroups"); 129 exit(1); 130 } 131 showgid(mygid); 132 for (i = 0; i < ngroups; i++) 133 if (gidset[i] != mygid) 134 showgid(gidset[i]); 135 } 136 exit(0); 137 } 138 if (uflag && gflag) 139 usage(); 140 if (uflag) { 141 for (; argc > 0; argc--, argv++) { 142 if (alldigits(*argv)) 143 showuid(atoi(*argv)); 144 else 145 showusrname(*argv); 146 } 147 exit(0); 148 } 149 if (gflag) { 150 for (; argc > 0; argc--, argv++) { 151 if (alldigits(*argv)) 152 showgid(atoi(*argv)); 153 else 154 showgrpname(*argv); 155 } 156 exit(0); 157 } 158 } 159 160 usage() 161 { 162 163 fprintf(stderr, "%s\n%s\n%s\n", 164 "Usage: quota [-guqv]", 165 "\tquota [-qv] -u username ...", 166 "\tquota [-qv] -g groupname ..."); 167 exit(1); 168 } 169 170 /* 171 * Print out quotas for a specified user identifier. 172 */ 173 showuid(uid) 174 u_long uid; 175 { 176 struct passwd *pwd = getpwuid(uid); 177 u_long myuid; 178 char *name; 179 180 if (pwd == NULL) 181 name = "(no account)"; 182 else 183 name = pwd->pw_name; 184 myuid = getuid(); 185 if (uid != myuid && myuid != 0) { 186 printf("quota: %s (uid %d): permission denied\n", name, uid); 187 return; 188 } 189 showquotas(USRQUOTA, uid, name); 190 } 191 192 /* 193 * Print out quotas for a specifed user name. 194 */ 195 showusrname(name) 196 char *name; 197 { 198 struct passwd *pwd = getpwnam(name); 199 u_long myuid; 200 201 if (pwd == NULL) { 202 fprintf(stderr, "quota: %s: unknown user\n", name); 203 return; 204 } 205 myuid = getuid(); 206 if (pwd->pw_uid != myuid && myuid != 0) { 207 fprintf(stderr, "quota: %s (uid %d): permission denied\n", 208 name, pwd->pw_uid); 209 return; 210 } 211 showquotas(USRQUOTA, pwd->pw_uid, name); 212 } 213 214 /* 215 * Print out quotas for a specified group identifier. 216 */ 217 showgid(gid) 218 u_long gid; 219 { 220 struct group *grp = getgrgid(gid); 221 int ngroups; 222 gid_t mygid, gidset[NGROUPS]; 223 register int i; 224 char *name; 225 226 if (grp == NULL) 227 name = "(no entry)"; 228 else 229 name = grp->gr_name; 230 mygid = getgid(); 231 ngroups = getgroups(NGROUPS, gidset); 232 if (ngroups < 0) { 233 perror("quota: getgroups"); 234 return; 235 } 236 if (gid != mygid) { 237 for (i = 0; i < ngroups; i++) 238 if (gid == gidset[i]) 239 break; 240 if (i >= ngroups && getuid() != 0) { 241 fprintf(stderr, 242 "quota: %s (gid %d): permission denied\n", 243 name, gid); 244 return; 245 } 246 } 247 showquotas(GRPQUOTA, gid, name); 248 } 249 250 /* 251 * Print out quotas for a specifed group name. 252 */ 253 showgrpname(name) 254 char *name; 255 { 256 struct group *grp = getgrnam(name); 257 int ngroups; 258 gid_t mygid, gidset[NGROUPS]; 259 register int i; 260 261 if (grp == NULL) { 262 fprintf(stderr, "quota: %s: unknown group\n", name); 263 return; 264 } 265 mygid = getgid(); 266 ngroups = getgroups(NGROUPS, gidset); 267 if (ngroups < 0) { 268 perror("quota: getgroups"); 269 return; 270 } 271 if (grp->gr_gid != mygid) { 272 for (i = 0; i < ngroups; i++) 273 if (grp->gr_gid == gidset[i]) 274 break; 275 if (i >= ngroups && getuid() != 0) { 276 fprintf(stderr, 277 "quota: %s (gid %d): permission denied\n", 278 name, grp->gr_gid); 279 return; 280 } 281 } 282 showquotas(GRPQUOTA, grp->gr_gid, name); 283 } 284 285 showquotas(type, id, name) 286 int type; 287 u_long id; 288 char *name; 289 { 290 register struct quotause *qup; 291 struct quotause *quplist; 292 char *msgi, *msgb, *nam; 293 int myuid, fd, lines = 0; 294 static int first; 295 static time_t now; 296 297 if (now == 0) 298 time(&now); 299 quplist = getprivs(id, type); 300 for (qup = quplist; qup; qup = qup->next) { 301 if (!vflag && 302 qup->dqblk.dqb_isoftlimit == 0 && 303 qup->dqblk.dqb_ihardlimit == 0 && 304 qup->dqblk.dqb_bsoftlimit == 0 && 305 qup->dqblk.dqb_bhardlimit == 0) 306 continue; 307 msgi = (char *)0; 308 if (qup->dqblk.dqb_ihardlimit && 309 qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_ihardlimit) 310 msgi = "File limit reached on"; 311 else if (qup->dqblk.dqb_isoftlimit && 312 qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_isoftlimit) 313 if (qup->dqblk.dqb_itime > now) 314 msgi = "In file grace period on"; 315 else 316 msgi = "Over file quota on"; 317 msgb = (char *)0; 318 if (qup->dqblk.dqb_bhardlimit && 319 qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bhardlimit) 320 msgb = "Block limit reached on"; 321 else if (qup->dqblk.dqb_bsoftlimit && 322 qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit) 323 if (qup->dqblk.dqb_btime > now) 324 msgb = "In block grace period on"; 325 else 326 msgb = "Over block quota on"; 327 if (qflag) { 328 if ((msgi != (char *)0 || msgb != (char *)0) && 329 lines++ == 0) 330 heading(type, id, name, ""); 331 if (msgi != (char *)0) 332 printf("\t%s %s\n", msgi, qup->fsname); 333 if (msgb != (char *)0) 334 printf("\t%s %s\n", msgb, qup->fsname); 335 continue; 336 } 337 if (vflag || 338 qup->dqblk.dqb_curblocks || 339 qup->dqblk.dqb_curinodes) { 340 if (lines++ == 0) 341 heading(type, id, name, ""); 342 nam = qup->fsname; 343 if (strlen(qup->fsname) > 15) { 344 printf("%s\n", qup->fsname); 345 nam = ""; 346 } 347 printf("%15s%8d%c%7d%8d%8s" 348 , nam 349 , dbtob(qup->dqblk.dqb_curblocks) / 1024 350 , (msgb == (char *)0) ? ' ' : '*' 351 , dbtob(qup->dqblk.dqb_bsoftlimit) / 1024 352 , dbtob(qup->dqblk.dqb_bhardlimit) / 1024 353 , (msgb == (char *)0) ? "" 354 : timeprt(qup->dqblk.dqb_btime)); 355 printf("%8d%c%7d%8d%8s\n" 356 , qup->dqblk.dqb_curinodes 357 , (msgi == (char *)0) ? ' ' : '*' 358 , qup->dqblk.dqb_isoftlimit 359 , qup->dqblk.dqb_ihardlimit 360 , (msgi == (char *)0) ? "" 361 : timeprt(qup->dqblk.dqb_itime) 362 ); 363 continue; 364 } 365 } 366 if (!qflag && lines == 0) 367 heading(type, id, name, "none"); 368 } 369 370 heading(type, id, name, tag) 371 int type; 372 u_long id; 373 char *name, *tag; 374 { 375 376 printf("Disk quotas for %s %s (%cid %d): %s\n", qfextension[type], 377 name, *qfextension[type], id, tag); 378 if (!qflag && tag[0] == '\0') { 379 printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n" 380 , "Filesystem" 381 , "blocks" 382 , "quota" 383 , "limit" 384 , "grace" 385 , "files" 386 , "quota" 387 , "limit" 388 , "grace" 389 ); 390 } 391 } 392 393 /* 394 * Calculate the grace period and return a printable string for it. 395 */ 396 char * 397 timeprt(seconds) 398 time_t seconds; 399 { 400 time_t hours, minutes; 401 static char buf[20]; 402 static time_t now; 403 404 if (now == 0) 405 time(&now); 406 if (now > seconds) 407 return ("none"); 408 seconds -= now; 409 minutes = (seconds + 30) / 60; 410 hours = (minutes + 30) / 60; 411 if (hours >= 36) { 412 sprintf(buf, "%ddays", (hours + 12) / 24); 413 return (buf); 414 } 415 if (minutes >= 60) { 416 sprintf(buf, "%2d:%d", minutes / 60, minutes % 60); 417 return (buf); 418 } 419 sprintf(buf, "%2d", minutes); 420 return (buf); 421 } 422 423 /* 424 * Collect the requested quota information. 425 */ 426 struct quotause * 427 getprivs(id, quotatype) 428 register long id; 429 int quotatype; 430 { 431 register struct quotause *qup, *quptail; 432 register struct fstab *fs; 433 struct quotause *quphead; 434 struct statfs *fst; 435 int nfst, i; 436 437 qup = quphead = (struct quotause *)0; 438 439 nfst = getmntinfo(&fst, MNT_WAIT); 440 if (nfst == 0) { 441 fprintf(stderr, "quota: no filesystems mounted!\n"); 442 exit(2); 443 } 444 setfsent(); 445 for (i=0; i<nfst; i++) { 446 if (qup == NULL) { 447 if ((qup = (struct quotause *)malloc(sizeof *qup)) == NULL) { 448 fprintf(stderr, "quota: out of memory\n"); 449 exit(2); 450 } 451 } 452 if (strncmp(fst[i].f_fstypename, "nfs", MFSNAMELEN) == 0) { 453 if (getnfsquota(&fst[i], NULL, qup, id, quotatype) == 0) 454 continue; 455 } else if (strncmp(fst[i].f_fstypename, "ffs", 456 MFSNAMELEN) == 0) { 457 /* 458 * XXX 459 * UFS filesystems must be in /etc/fstab, and must 460 * indicate that they have quotas on (?!) This is quite 461 * unlike SunOS where quotas can be enabled/disabled 462 * on a filesystem independent of /etc/fstab, and it 463 * will still print quotas for them. 464 */ 465 if ((fs = getfsspec(fst[i].f_mntfromname)) == NULL) 466 continue; 467 if (getufsquota(&fst[i], fs, qup, id, quotatype) == 0) 468 continue; 469 } else 470 continue; 471 strcpy(qup->fsname, fst[i].f_mntonname); 472 if (quphead == NULL) 473 quphead = qup; 474 else 475 quptail->next = qup; 476 quptail = qup; 477 quptail->next = 0; 478 qup = NULL; 479 } 480 if (qup) 481 free(qup); 482 endfsent(); 483 return (quphead); 484 } 485 486 /* 487 * Check to see if a particular quota is to be enabled. 488 */ 489 ufshasquota(fs, type, qfnamep) 490 register struct fstab *fs; 491 int type; 492 char **qfnamep; 493 { 494 static char initname, usrname[100], grpname[100]; 495 static char buf[BUFSIZ]; 496 char *opt, *cp; 497 498 if (!initname) { 499 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname); 500 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname); 501 initname = 1; 502 } 503 strcpy(buf, fs->fs_mntops); 504 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 505 if (cp = index(opt, '=')) 506 *cp++ = '\0'; 507 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 508 break; 509 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 510 break; 511 } 512 if (!opt) 513 return (0); 514 if (cp) { 515 *qfnamep = cp; 516 return (1); 517 } 518 (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]); 519 *qfnamep = buf; 520 return (1); 521 } 522 523 int 524 getufsquota(fst, fs, qup, id, quotatype) 525 struct statfs *fst; 526 struct fstab *fs; 527 struct quotause *qup; 528 long id; 529 int quotatype; 530 { 531 char *qfpathname; 532 int fd, qcmd; 533 534 qcmd = QCMD(Q_GETQUOTA, quotatype); 535 if (!ufshasquota(fs, quotatype, &qfpathname)) 536 return (0); 537 538 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) { 539 if ((fd = open(qfpathname, O_RDONLY)) < 0) { 540 perror(qfpathname); 541 return (0); 542 } 543 (void) lseek(fd, (off_t)(id * sizeof(struct dqblk)), L_SET); 544 switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) { 545 case 0: /* EOF */ 546 /* 547 * Convert implicit 0 quota (EOF) 548 * into an explicit one (zero'ed dqblk) 549 */ 550 bzero((caddr_t)&qup->dqblk, sizeof(struct dqblk)); 551 break; 552 case sizeof(struct dqblk): /* OK */ 553 break; 554 default: /* ERROR */ 555 fprintf(stderr, "quota: read error"); 556 perror(qfpathname); 557 close(fd); 558 return (0); 559 } 560 close(fd); 561 } 562 return (1); 563 } 564 565 int 566 getnfsquota(fst, fs, qup, id, quotatype) 567 struct statfs *fst; 568 struct fstab *fs; 569 struct quotause *qup; 570 long id; 571 int quotatype; 572 { 573 struct getquota_args gq_args; 574 struct getquota_rslt gq_rslt; 575 struct dqblk *dqp = &qup->dqblk; 576 struct timeval tv; 577 char *cp; 578 579 if (fst->f_flags & MNT_LOCAL) 580 return (0); 581 582 /* 583 * rpc.rquotad does not support group quotas 584 */ 585 if (quotatype != USRQUOTA) 586 return (0); 587 588 /* 589 * must be some form of "hostname:/path" 590 */ 591 cp = strchr(fst->f_mntfromname, ':'); 592 if (cp == NULL) { 593 fprintf(stderr, "cannot find hostname for %s\n", 594 fst->f_mntfromname); 595 return (0); 596 } 597 598 *cp = '\0'; 599 if (*(cp+1) != '/') { 600 *cp = ':'; 601 return (0); 602 } 603 604 gq_args.gqa_pathp = cp + 1; 605 gq_args.gqa_uid = id; 606 if (callaurpc(fst->f_mntfromname, RQUOTAPROG, RQUOTAVERS, 607 RQUOTAPROC_GETQUOTA, xdr_getquota_args, &gq_args, 608 xdr_getquota_rslt, &gq_rslt) != 0) { 609 *cp = ':'; 610 return (0); 611 } 612 613 switch (gq_rslt.status) { 614 case Q_NOQUOTA: 615 break; 616 case Q_EPERM: 617 fprintf(stderr, "quota permission error, host: %s\n", 618 fst->f_mntfromname); 619 break; 620 case Q_OK: 621 gettimeofday(&tv, NULL); 622 /* blocks*/ 623 dqp->dqb_bhardlimit = 624 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit * 625 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE; 626 dqp->dqb_bsoftlimit = 627 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit * 628 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE; 629 dqp->dqb_curblocks = 630 gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks * 631 gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE; 632 /* inodes */ 633 dqp->dqb_ihardlimit = 634 gq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit; 635 dqp->dqb_isoftlimit = 636 gq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit; 637 dqp->dqb_curinodes = 638 gq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles; 639 /* grace times */ 640 dqp->dqb_btime = 641 tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft; 642 dqp->dqb_itime = 643 tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft; 644 *cp = ':'; 645 return (1); 646 default: 647 fprintf(stderr, "bad rpc result, host: %s\n", 648 fst->f_mntfromname); 649 break; 650 } 651 *cp = ':'; 652 return (0); 653 } 654 655 int 656 callaurpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 657 char *host; 658 xdrproc_t inproc, outproc; 659 char *in, *out; 660 { 661 struct sockaddr_in server_addr; 662 enum clnt_stat clnt_stat; 663 struct hostent *hp; 664 struct timeval timeout, tottimeout; 665 666 CLIENT *client = NULL; 667 int socket = RPC_ANYSOCK; 668 669 if ((hp = gethostbyname(host)) == NULL) 670 return ((int) RPC_UNKNOWNHOST); 671 timeout.tv_usec = 0; 672 timeout.tv_sec = 6; 673 bcopy(hp->h_addr, &server_addr.sin_addr, hp->h_length); 674 server_addr.sin_family = AF_INET; 675 server_addr.sin_port = 0; 676 677 if ((client = clntudp_create(&server_addr, prognum, 678 versnum, timeout, &socket)) == NULL) 679 return ((int) rpc_createerr.cf_stat); 680 681 client->cl_auth = authunix_create_default(); 682 tottimeout.tv_sec = 25; 683 tottimeout.tv_usec = 0; 684 clnt_stat = clnt_call(client, procnum, inproc, in, 685 outproc, out, tottimeout); 686 687 return ((int) clnt_stat); 688 } 689 690 alldigits(s) 691 register char *s; 692 { 693 register c; 694 695 c = *s++; 696 do { 697 if (!isdigit(c)) 698 return (0); 699 } while (c = *s++); 700 return (1); 701 } 702
Indexes created Sun Sep 28 07:09:56 GMT 2025