A number of structures related to UFS and QUOTAS have changed name.
[dragonfly.git] / usr.sbin / edquota / edquota.c
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  * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California.  All rights reserved.
37  * @(#)edquota.c        8.1 (Berkeley) 6/6/93
38  * $FreeBSD: src/usr.sbin/edquota/edquota.c,v 1.9.2.6 2002/10/31 22:38:43 iedowse Exp $
39  * $DragonFly: src/usr.sbin/edquota/edquota.c,v 1.8 2006/04/03 01:58:49 dillon Exp $
40  */
41
42 /*
43  * Disk quota editor.
44  */
45 #include <sys/param.h>
46 #include <sys/stat.h>
47 #include <sys/file.h>
48 #include <sys/wait.h>
49 #include <vfs/ufs/quota.h>
50 #include <ctype.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fstab.h>
54 #include <grp.h>
55 #include <pwd.h>
56 #include <signal.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <unistd.h>
61 #include "pathnames.h"
62
63 const char *qfname = QUOTAFILENAME;
64 const char *qfextension[] = INITQFNAMES;
65 const char *quotagroup = QUOTAGROUP;
66 char tmpfil[] = _PATH_TMP;
67
68 struct quotause {
69         struct  quotause *next;
70         long    flags;
71         struct  ufs_dqblk dqblk;
72         char    fsname[MAXPATHLEN + 1];
73         char    qfname[1];      /* actually longer */
74 };
75 #define FOUND   0x01
76
77 int alldigits(const char *s);
78 int cvtatos(time_t, char *, time_t *);
79 char *cvtstoa(time_t);
80 int editit(char *);
81 void freeprivs(struct quotause *);
82 int getentry(const char *, int);
83 struct quotause *getprivs(long, int, char *);
84 int hasquota(struct fstab *, int, char **);
85 void putprivs(long, int, struct quotause *);
86 int readprivs(struct quotause *, char *);
87 int readtimes(struct quotause *, char *);
88 static void usage(void);
89 int writetimes(struct quotause *, int, int);
90 int writeprivs(struct quotause *, int, char *, int);
91
92 int
93 main(int argc, char **argv)
94 {
95         struct quotause *qup, *protoprivs, *curprivs;
96         long id, protoid;
97         long long lim;
98         int i, quotatype, range, tmpfd;
99         uid_t startuid, enduid;
100         u_int32_t *limp;
101         char *protoname, *cp, *oldoptarg, ch;
102         int eflag = 0, tflag = 0, pflag = 0;
103         char *fspath = NULL;
104         char buf[MAXLOGNAME];
105
106         if (argc < 2)
107                 usage();
108         if (getuid())
109                 errx(1, "permission denied");
110         quotatype = USRQUOTA;
111         protoprivs = NULL;
112         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
113                 switch(ch) {
114                 case 'f':
115                         fspath = optarg;
116                         break;
117                 case 'p':
118                         protoname = optarg;
119                         pflag++;
120                         break;
121                 case 'g':
122                         quotatype = GRPQUOTA;
123                         break;
124                 case 'u':
125                         quotatype = USRQUOTA;
126                         break;
127                 case 't':
128                         tflag++;
129                         break;
130                 case 'e':
131                         if ((qup = malloc(sizeof(*qup))) == NULL)
132                                 errx(2, "out of memory");
133                         bzero(qup, sizeof(*qup));
134                         i = 0;
135                         oldoptarg = optarg;
136                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
137                             i++) {
138                                 if (cp != oldoptarg)
139                                         *(cp - 1) = ':';
140                                 limp = NULL;
141                                 switch (i) {
142                                 case 0:
143                                         strlcpy(qup->fsname, cp,
144                                             sizeof(qup->fsname));
145                                         break;
146                                 case 1:
147                                         limp = &qup->dqblk.dqb_bsoftlimit;
148                                         break;
149                                 case 2:
150                                         limp = &qup->dqblk.dqb_bhardlimit;
151                                         break;
152                                 case 3:
153                                         limp = &qup->dqblk.dqb_isoftlimit;
154                                         break;
155                                 case 4:
156                                         limp = &qup->dqblk.dqb_ihardlimit;
157                                         break;
158                                 default:
159                                         warnx("incorrect quota specification: "
160                                             "%s", oldoptarg);
161                                         usage();
162                                         break; /* XXX: report an error */
163                                 }
164                                 if (limp != NULL) {
165                                         lim = strtoll(cp, NULL, 10);
166                                         if (lim < 0 || lim > UINT_MAX)
167                                                 errx(1, "invalid limit value: "
168                                                     "%lld", lim);
169                                         *limp = (u_int32_t)lim;
170                                 }
171                         }
172                         qup->dqblk.dqb_bsoftlimit =
173                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
174                         qup->dqblk.dqb_bhardlimit =
175                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
176                         if (protoprivs == NULL) {
177                                 protoprivs = curprivs = qup;
178                         } else {
179                                 curprivs->next = qup;
180                                 curprivs = qup;
181                         }
182                         eflag++;
183                         pflag++;
184                         break;
185                 default:
186                         usage();
187                 }
188         }
189         argc -= optind;
190         argv += optind;
191         if (pflag) {
192                 if (protoprivs == NULL) {
193                         if ((protoid = getentry(protoname, quotatype)) == -1)
194                                 exit(1);
195                         protoprivs = getprivs(protoid, quotatype, fspath);
196                         for (qup = protoprivs; qup; qup = qup->next) {
197                                 qup->dqblk.dqb_btime = 0;
198                                 qup->dqblk.dqb_itime = 0;
199                         }
200                 }
201                 for (; argc-- > 0; argv++) {
202                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
203                             (cp = strchr(*argv, '-')) != NULL) {
204                                 *cp++ = '\0';
205                                 startuid = atoi(*argv);
206                                 enduid = atoi(cp);
207                                 if (enduid < startuid)
208                                         errx(1,
209         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
210                                                 enduid, startuid);
211                                 range = 1;
212                         } else {
213                                 startuid = enduid = 0;
214                                 range = 0;
215                         }
216                         for ( ; startuid <= enduid; startuid++) {
217                                 if (range)
218                                         snprintf(buf, sizeof(buf), "%d",
219                                             startuid);
220                                 else
221                                         snprintf(buf, sizeof(buf), "%s",
222                                                 *argv);
223                                 if ((id = getentry(buf, quotatype)) < 0)
224                                         continue;
225                                 if (eflag) {
226                                         for (qup = protoprivs; qup;
227                                             qup = qup->next) {
228                                                 curprivs = getprivs(id,
229                                                     quotatype, qup->fsname);
230                                                 if (curprivs == NULL)
231                                                         continue;
232                                                 strcpy(qup->qfname,
233                                                     curprivs->qfname);
234                                                 strcpy(qup->fsname,
235                                                     curprivs->fsname);
236                                         }
237                                 }
238                                 putprivs(id, quotatype, protoprivs);                                            
239                         }
240                 }
241                 exit(0);
242         }
243         tmpfd = mkstemp(tmpfil);
244         fchown(tmpfd, getuid(), getgid());
245         if (tflag) {
246                 protoprivs = getprivs(0, quotatype, fspath);
247                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
248                         exit(1);
249                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
250                         putprivs(0, quotatype, protoprivs);
251                 freeprivs(protoprivs);
252                 close(tmpfd);
253                 unlink(tmpfil);
254                 exit(0);
255         }
256         for ( ; argc > 0; argc--, argv++) {
257                 if ((id = getentry(*argv, quotatype)) == -1)
258                         continue;
259                 curprivs = getprivs(id, quotatype, fspath);
260                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
261                         continue;
262                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
263                         putprivs(id, quotatype, curprivs);
264                 freeprivs(curprivs);
265         }
266         close(tmpfd);
267         unlink(tmpfil);
268         exit(0);
269 }
270
271 static void
272 usage(void)
273 {
274         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
275                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
276                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
277                 "               username ...",
278                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
279                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
280                 "               groupname ...",
281                 "       edquota [-u] -t [-f fspath]",
282                 "       edquota -g -t [-f fspath]");
283         exit(1);
284 }
285
286 /*
287  * This routine converts a name for a particular quota type to
288  * an identifier. This routine must agree with the kernel routine
289  * getinoquota as to the interpretation of quota types.
290  */
291 int
292 getentry(const char *name, int quotatype)
293 {
294         struct passwd *pw;
295         struct group *gr;
296
297         if (alldigits(name))
298                 return (atoi(name));
299         switch(quotatype) {
300         case USRQUOTA:
301                 if ((pw = getpwnam(name)))
302                         return (pw->pw_uid);
303                 warnx("%s: no such user", name);
304                 break;
305         case GRPQUOTA:
306                 if ((gr = getgrnam(name)))
307                         return (gr->gr_gid);
308                 warnx("%s: no such group", name);
309                 break;
310         default:
311                 warnx("%d: unknown quota type", quotatype);
312                 break;
313         }
314         sleep(1);
315         return (-1);
316 }
317
318 /*
319  * Collect the requested quota information.
320  */
321 struct quotause *
322 getprivs(long id, int quotatype, char *fspath)
323 {
324         struct fstab *fs;
325         struct quotause *qup, *quptail;
326         struct quotause *quphead;
327         int qcmd, qupsize, fd;
328         char *qfpathname;
329         static int warned = 0;
330
331         setfsent();
332         quphead = (struct quotause *)0;
333         qcmd = QCMD(Q_GETQUOTA, quotatype);
334         while ((fs = getfsent())) {
335                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
336                     strcmp(fspath, fs->fs_file))
337                         continue;
338                 if (strcmp(fs->fs_vfstype, "ufs"))
339                         continue;
340                 if (!hasquota(fs, quotatype, &qfpathname))
341                         continue;
342                 qupsize = sizeof(*qup) + strlen(qfpathname);
343                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
344                         errx(2, "out of memory");
345                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
346                         if (errno == EOPNOTSUPP && !warned) {
347                                 warned++;
348                 warnx("warning: quotas are not compiled into this kernel");
349                                 sleep(3);
350                         }
351                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
352                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
353                                 if (fd < 0 && errno != ENOENT) {
354                                         warn("%s", qfpathname);
355                                         free(qup);
356                                         continue;
357                                 }
358                                 warnx("creating quota file %s", qfpathname);
359                                 sleep(3);
360                                 fchown(fd, getuid(),
361                                     getentry(quotagroup, GRPQUOTA));
362                                 fchmod(fd, 0640);
363                         }
364                         lseek(fd, (long)(id * sizeof(struct ufs_dqblk)), L_SET);
365                         switch (read(fd, &qup->dqblk, sizeof(struct ufs_dqblk))) {
366                         case 0:                 /* EOF */
367                                 /*
368                                  * Convert implicit 0 quota (EOF)
369                                  * into an explicit one (zero'ed dqblk)
370                                  */
371                                 bzero((caddr_t)&qup->dqblk,
372                                     sizeof(struct ufs_dqblk));
373                                 break;
374
375                         case sizeof(struct ufs_dqblk):  /* OK */
376                                 break;
377
378                         default:                /* ERROR */
379                                 warn("read error in %s", qfpathname);
380                                 close(fd);
381                                 free(qup);
382                                 continue;
383                         }
384                         close(fd);
385                 }
386                 strcpy(qup->qfname, qfpathname);
387                 strcpy(qup->fsname, fs->fs_file);
388                 if (quphead == NULL)
389                         quphead = qup;
390                 else
391                         quptail->next = qup;
392                 quptail = qup;
393                 qup->next = 0;
394         }
395         endfsent();
396         return (quphead);
397 }
398
399 /*
400  * Store the requested quota information.
401  */
402 void
403 putprivs(long id, int quotatype, struct quotause *quplist)
404 {
405         struct quotause *qup;
406         int qcmd, fd;
407
408         qcmd = QCMD(Q_SETQUOTA, quotatype);
409         for (qup = quplist; qup; qup = qup->next) {
410                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
411                         continue;
412                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
413                         warn("%s", qup->qfname);
414                 } else {
415                         lseek(fd, (long)id * (long)sizeof(struct ufs_dqblk), 0);
416                         if (write(fd, &qup->dqblk, sizeof(struct ufs_dqblk)) !=
417                             sizeof(struct ufs_dqblk)) {
418                                 warn("%s", qup->qfname);
419                         }
420                         close(fd);
421                 }
422         }
423 }
424
425 /*
426  * Take a list of priviledges and get it edited.
427  */
428 int
429 editit(char *tmpf)
430 {
431         long omask;
432         int pid, status;
433
434         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
435  top:
436         if ((pid = fork()) < 0) {
437
438                 if (errno == EPROCLIM) {
439                         warnx("you have too many processes");
440                         return(0);
441                 }
442                 if (errno == EAGAIN) {
443                         sleep(1);
444                         goto top;
445                 }
446                 warn("fork");
447                 return (0);
448         }
449         if (pid == 0) {
450                 const char *ed;
451
452                 sigsetmask(omask);
453                 setgid(getgid());
454                 setuid(getuid());
455                 if ((ed = getenv("EDITOR")) == (char *)0)
456                         ed = _PATH_VI;
457                 execlp(ed, ed, tmpf, (char *)0);
458                 err(1, "%s", ed);
459         }
460         waitpid(pid, &status, 0);
461         sigsetmask(omask);
462         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
463                 return (0);
464         return (1);
465 }
466
467 /*
468  * Convert a quotause list to an ASCII file.
469  */
470 int
471 writeprivs(struct quotause *quplist, int outfd, char *name, int quotatype)
472 {
473         struct quotause *qup;
474         FILE *fd;
475
476         ftruncate(outfd, 0);
477         lseek(outfd, 0, L_SET);
478         if ((fd = fdopen(dup(outfd), "w")) == NULL)
479                 err(1, "%s", tmpfil);
480         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
481         for (qup = quplist; qup; qup = qup->next) {
482                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
483                     qup->fsname, "kbytes in use:",
484                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
485                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
486                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
487                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
488                     "\tinodes in use:",
489                     (unsigned long)qup->dqblk.dqb_curinodes,
490                     (unsigned long)qup->dqblk.dqb_isoftlimit,
491                     (unsigned long)qup->dqblk.dqb_ihardlimit);
492         }
493         fclose(fd);
494         return (1);
495 }
496
497 /*
498  * Merge changes to an ASCII file into a quotause list.
499  */
500 int
501 readprivs(struct quotause *quplist, char *inname)
502 {
503         struct quotause *qup;
504         FILE *fd;
505         unsigned long bhardlimit, bsoftlimit, curblocks;
506         unsigned long ihardlimit, isoftlimit, curinodes;
507         int cnt;
508         char *cp;
509         struct ufs_dqblk dqblk;
510         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
511
512         fd = fopen(inname, "r");
513         if (fd == NULL) {
514                 warnx("can't re-read temp file!!");
515                 return (0);
516         }
517         /*
518          * Discard title line, then read pairs of lines to process.
519          */
520         fgets(line1, sizeof(line1), fd);
521         while (fgets(line1, sizeof(line1), fd) != NULL &&
522                fgets(line2, sizeof(line2), fd) != NULL) {
523                 if ((fsp = strtok(line1, " \t:")) == NULL) {
524                         warnx("%s: bad format", line1);
525                         return (0);
526                 }
527                 if ((cp = strtok((char *)0, "\n")) == NULL) {
528                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
529                         return (0);
530                 }
531                 cnt = sscanf(cp,
532                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
533                     &curblocks, &bsoftlimit, &bhardlimit);
534                 if (cnt != 3) {
535                         warnx("%s:%s: bad format", fsp, cp);
536                         return (0);
537                 }
538                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
539                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
540                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
541                 if ((cp = strtok(line2, "\n")) == NULL) {
542                         warnx("%s: %s: bad format", fsp, line2);
543                         return (0);
544                 }
545                 cnt = sscanf(cp,
546                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
547                     &curinodes, &isoftlimit, &ihardlimit);
548                 if (cnt != 3) {
549                         warnx("%s: %s: bad format", fsp, line2);
550                         return (0);
551                 }
552                 dqblk.dqb_curinodes = curinodes;
553                 dqblk.dqb_isoftlimit = isoftlimit;
554                 dqblk.dqb_ihardlimit = ihardlimit;
555                 for (qup = quplist; qup; qup = qup->next) {
556                         if (strcmp(fsp, qup->fsname))
557                                 continue;
558                         /*
559                          * Cause time limit to be reset when the quota
560                          * is next used if previously had no soft limit
561                          * or were under it, but now have a soft limit
562                          * and are over it.
563                          */
564                         if (dqblk.dqb_bsoftlimit &&
565                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
566                             (qup->dqblk.dqb_bsoftlimit == 0 ||
567                              qup->dqblk.dqb_curblocks <
568                              qup->dqblk.dqb_bsoftlimit))
569                                 qup->dqblk.dqb_btime = 0;
570                         if (dqblk.dqb_isoftlimit &&
571                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
572                             (qup->dqblk.dqb_isoftlimit == 0 ||
573                              qup->dqblk.dqb_curinodes <
574                              qup->dqblk.dqb_isoftlimit))
575                                 qup->dqblk.dqb_itime = 0;
576                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
577                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
578                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
579                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
580                         qup->flags |= FOUND;
581                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
582                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
583                                 break;
584                         warnx("%s: cannot change current allocation", fsp);
585                         break;
586                 }
587         }
588         fclose(fd);
589         /*
590          * Disable quotas for any filesystems that have not been found.
591          */
592         for (qup = quplist; qup; qup = qup->next) {
593                 if (qup->flags & FOUND) {
594                         qup->flags &= ~FOUND;
595                         continue;
596                 }
597                 qup->dqblk.dqb_bsoftlimit = 0;
598                 qup->dqblk.dqb_bhardlimit = 0;
599                 qup->dqblk.dqb_isoftlimit = 0;
600                 qup->dqblk.dqb_ihardlimit = 0;
601         }
602         return (1);
603 }
604
605 /*
606  * Convert a quotause list to an ASCII file of grace times.
607  */
608 int
609 writetimes(struct quotause *quplist, int outfd, int quotatype)
610 {
611         struct quotause *qup;
612         FILE *fd;
613
614         ftruncate(outfd, 0);
615         lseek(outfd, 0, L_SET);
616         if ((fd = fdopen(dup(outfd), "w")) == NULL)
617                 err(1, "%s", tmpfil);
618         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
619         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
620             qfextension[quotatype]);
621         for (qup = quplist; qup; qup = qup->next) {
622                 fprintf(fd, "%s: block grace period: %s, ",
623                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
624                 fprintf(fd, "file grace period: %s\n",
625                     cvtstoa(qup->dqblk.dqb_itime));
626         }
627         fclose(fd);
628         return (1);
629 }
630
631 /*
632  * Merge changes of grace times in an ASCII file into a quotause list.
633  */
634 int
635 readtimes(struct quotause *quplist, char *inname)
636 {
637         struct quotause *qup;
638         FILE *fd;
639         int cnt;
640         char *cp;
641         time_t itime, btime, iseconds, bseconds;
642         long l_itime, l_btime;
643         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
644
645         fd = fopen(inname, "r");
646         if (fd == NULL) {
647                 warnx("can't re-read temp file!!");
648                 return (0);
649         }
650         /*
651          * Discard two title lines, then read lines to process.
652          */
653         fgets(line1, sizeof(line1), fd);
654         fgets(line1, sizeof(line1), fd);
655         while (fgets(line1, sizeof(line1), fd) != NULL) {
656                 if ((fsp = strtok(line1, " \t:")) == NULL) {
657                         warnx("%s: bad format", line1);
658                         return (0);
659                 }
660                 if ((cp = strtok((char *)0, "\n")) == NULL) {
661                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
662                         return (0);
663                 }
664                 cnt = sscanf(cp,
665                     " block grace period: %ld %s file grace period: %ld %s",
666                     &l_btime, bunits, &l_itime, iunits);
667                 if (cnt != 4) {
668                         warnx("%s:%s: bad format", fsp, cp);
669                         return (0);
670                 }
671                 btime = l_btime;
672                 itime = l_itime;
673                 if (cvtatos(btime, bunits, &bseconds) == 0)
674                         return (0);
675                 if (cvtatos(itime, iunits, &iseconds) == 0)
676                         return (0);
677                 for (qup = quplist; qup; qup = qup->next) {
678                         if (strcmp(fsp, qup->fsname))
679                                 continue;
680                         qup->dqblk.dqb_btime = bseconds;
681                         qup->dqblk.dqb_itime = iseconds;
682                         qup->flags |= FOUND;
683                         break;
684                 }
685         }
686         fclose(fd);
687         /*
688          * reset default grace periods for any filesystems
689          * that have not been found.
690          */
691         for (qup = quplist; qup; qup = qup->next) {
692                 if (qup->flags & FOUND) {
693                         qup->flags &= ~FOUND;
694                         continue;
695                 }
696                 qup->dqblk.dqb_btime = 0;
697                 qup->dqblk.dqb_itime = 0;
698         }
699         return (1);
700 }
701
702 /*
703  * Convert seconds to ASCII times.
704  */
705 char *
706 cvtstoa(time_t secs)
707 {
708         static char buf[20];
709
710         if (secs % (24 * 60 * 60) == 0) {
711                 secs /= 24 * 60 * 60;
712                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
713         } else if (secs % (60 * 60) == 0) {
714                 secs /= 60 * 60;
715                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
716         } else if (secs % 60 == 0) {
717                 secs /= 60;
718                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
719         } else
720                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
721         return (buf);
722 }
723
724 /*
725  * Convert ASCII input times to seconds.
726  */
727 int
728 cvtatos(time_t period, char *units, time_t *seconds)
729 {
730
731         if (bcmp(units, "second", 6) == 0)
732                 *seconds = period;
733         else if (bcmp(units, "minute", 6) == 0)
734                 *seconds = period * 60;
735         else if (bcmp(units, "hour", 4) == 0)
736                 *seconds = period * 60 * 60;
737         else if (bcmp(units, "day", 3) == 0)
738                 *seconds = period * 24 * 60 * 60;
739         else {
740                 printf("%s: bad units, specify %s\n", units,
741                     "days, hours, minutes, or seconds");
742                 return (0);
743         }
744         return (1);
745 }
746
747 /*
748  * Free a list of quotause structures.
749  */
750 void
751 freeprivs(struct quotause *quplist)
752 {
753         struct quotause *qup, *nextqup;
754
755         for (qup = quplist; qup; qup = nextqup) {
756                 nextqup = qup->next;
757                 free(qup);
758         }
759 }
760
761 /*
762  * Check whether a string is completely composed of digits.
763  */
764 int
765 alldigits(const char *s)
766 {
767         int c;
768
769         c = *s++;
770         do {
771                 if (!isdigit(c))
772                         return (0);
773         } while ((c = *s++));
774         return (1);
775 }
776
777 /*
778  * Check to see if a particular quota is to be enabled.
779  */
780 int
781 hasquota(struct fstab *fs, int type, char **qfnamep)
782 {
783         char *opt;
784         char *cp;
785         static char initname, usrname[100], grpname[100];
786         static char buf[BUFSIZ];
787
788         if (!initname) {
789                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
790                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
791                 initname = 1;
792         }
793         strcpy(buf, fs->fs_mntops);
794         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
795                 if ((cp = strchr(opt, '=')))
796                         *cp++ = '\0';
797                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
798                         break;
799                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
800                         break;
801         }
802         if (!opt)
803                 return (0);
804         if (cp) {
805                 *qfnamep = cp;
806                 return (1);
807         }
808         sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
809         *qfnamep = buf;
810         return (1);
811 }