usr.sbin/repquota/repquota.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. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California.  All rights reserved.
  33  * @(#)repquota.c       8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.sbin/repquota/repquota.c,v 1.9.2.2 2002/03/15 22:18:25 mikeh Exp $
  35  */
  36
  37 /*
  38  * Quota report
  39  */
  40 #include <sys/param.h>
  41 #include <sys/stat.h>
  42 #include <vfs/ufs/quota.h>
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <fstab.h>
  46 #include <grp.h>
  47 #include <pwd.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51 #include <unistd.h>
  52 #include <utmp.h>
  53
  54 /* Let's be paranoid about block size */
  55 #if 10 > DEV_BSHIFT
  56 #define dbtokb(db) \
  57         ((off_t)(db) >> (10-DEV_BSHIFT))
  58 #elif 10 < DEV_BSHIFT
  59 #define dbtokb(db) \
  60         ((off_t)(db) << (DEV_BSHIFT-10))
  61 #else
  62 #define dbtokb(db)      (db)
  63 #endif
  64
  65 #define max(a,b) ((a) >= (b) ? (a) : (b))
  66
  67 const char *qfname = QUOTAFILENAME;
  68 const char *qfextension[] = INITQFNAMES;
  69
  70 struct fileusage {
  71         struct  fileusage *fu_next;
  72         struct  ufs_dqblk fu_dqblk;
  73         u_long  fu_id;
  74         char    fu_name[1];
  75         /* actually bigger */
  76 };
  77 #define FUHASH 1024     /* must be power of two */
  78 struct fileusage *fuhead[MAXQUOTAS][FUHASH];
  79 struct fileusage *lookup(u_long, int);
  80 struct fileusage *addid(u_long, int, char *);
  81 u_long highid[MAXQUOTAS];       /* highest addid()'ed identifier per type */
  82
  83 int     vflag;                  /* verbose */
  84 int     aflag;                  /* all file systems */
  85
  86 int hasquota(struct fstab *, int, char **);
  87 int oneof(char *, char *[], int);
  88 int repquota(struct fstab *, int, char *);
  89 char *timeprt(time_t);
  90 static void usage(void);
  91
  92 int
  93 main(int argc, char **argv)
  94 {
  95         struct fstab *fs;
  96         struct passwd *pw;
  97         struct group *gr;
  98         int gflag = 0, uflag = 0, errs = 0;
  99         long i, argnum, done = 0;
 100         char ch, *qfnp;
 101
 102         while ((ch = getopt(argc, argv, "aguv")) != -1) {
 103                 switch(ch) {
 104                 case 'a':
 105                         aflag++;
 106                         break;
 107                 case 'g':
 108                         gflag++;
 109                         break;
 110                 case 'u':
 111                         uflag++;
 112                         break;
 113                 case 'v':
 114                         vflag++;
 115                         break;
 116                 default:
 117                         usage();
 118                 }
 119         }
 120         argc -= optind;
 121         argv += optind;
 122         if (argc == 0 && !aflag)
 123                 usage();
 124         if (!gflag && !uflag) {
 125                 if (aflag)
 126                         gflag++;
 127                 uflag++;
 128         }
 129         if (gflag) {
 130                 setgrent();
 131                 while ((gr = getgrent()) != NULL)
 132                         addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name);
 133                 endgrent();
 134         }
 135         if (uflag) {
 136                 setpwent();
 137                 while ((pw = getpwent()) != NULL)
 138                         addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name);
 139                 endpwent();
 140         }
 141         setfsent();
 142         while ((fs = getfsent()) != NULL) {
 143                 if (strcmp(fs->fs_vfstype, "ufs"))
 144                         continue;
 145                 if (aflag) {
 146                         if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
 147                                 errs += repquota(fs, GRPQUOTA, qfnp);
 148                         if (uflag && hasquota(fs, USRQUOTA, &qfnp))
 149                                 errs += repquota(fs, USRQUOTA, qfnp);
 150                         continue;
 151                 }
 152                 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
 153                     (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
 154                         done |= 1 << argnum;
 155                         if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
 156                                 errs += repquota(fs, GRPQUOTA, qfnp);
 157                         if (uflag && hasquota(fs, USRQUOTA, &qfnp))
 158                                 errs += repquota(fs, USRQUOTA, qfnp);
 159                 }
 160         }
 161         endfsent();
 162         for (i = 0; i < argc; i++)
 163                 if ((done & (1 << i)) == 0)
 164                         warnx("%s not found in fstab", argv[i]);
 165         exit(errs);
 166 }
 167
 168 static void
 169 usage(void)
 170 {
 171         fprintf(stderr, "%s\n%s\n",
 172             "usage: repquota [-v] [-g] [-u] -a",
 173             "       repquota [-v] [-g] [-u] filesystem ...");
 174         exit(1);
 175 }
 176
 177 int
 178 repquota(struct fstab *fs, int type, char *qfpathname)
 179 {
 180         struct fileusage *fup;
 181         FILE *qf;
 182         u_long id;
 183         struct ufs_dqblk dqbuf;
 184         static struct ufs_dqblk zerodqblk;
 185         static int warned = 0;
 186         static int multiple = 0;
 187
 188         if (quotactl(fs->fs_file, QCMD(Q_SYNC, type), 0, 0) < 0 &&
 189             errno == EOPNOTSUPP && !warned && vflag) {
 190                 warned++;
 191                 fprintf(stdout,
 192                     "*** Warning: Quotas are not compiled into this kernel\n");
 193         }
 194         if (multiple++)
 195                 printf("\n");
 196         if (vflag)
 197                 fprintf(stdout, "*** Report for %s quotas on %s (%s)\n",
 198                     qfextension[type], fs->fs_file, fs->fs_spec);
 199         if ((qf = fopen(qfpathname, "r")) == NULL) {
 200                 warn("%s", qfpathname);
 201                 return (1);
 202         }
 203         for (id = 0; ; id++) {
 204                 fread(&dqbuf, sizeof(struct ufs_dqblk), 1, qf);
 205                 if (feof(qf))
 206                         break;
 207                 if (dqbuf.dqb_curinodes == 0 && dqbuf.dqb_curblocks == 0)
 208                         continue;
 209                 if ((fup = lookup(id, type)) == NULL)
 210                         fup = addid(id, type, NULL);
 211                 fup->fu_dqblk = dqbuf;
 212         }
 213         fclose(qf);
 214         printf("%*s                Block  limits                    File  limits\n",
 215                 max(UT_NAMESIZE,10), " ");
 216         printf("User%*s   used     soft     hard  grace     used    soft    hard  grace\n",
 217                 max(UT_NAMESIZE,10), " ");
 218         for (id = 0; id <= highid[type]; id++) {
 219                 fup = lookup(id, type);
 220                 if (fup == NULL)
 221                         continue;
 222                 if (fup->fu_dqblk.dqb_curinodes == 0 &&
 223                     fup->fu_dqblk.dqb_curblocks == 0)
 224                         continue;
 225                 printf("%-*s", max(UT_NAMESIZE,10), fup->fu_name);
 226                 printf("%c%c %8lu %8lu %8lu %6s",
 227                         fup->fu_dqblk.dqb_bsoftlimit &&
 228                             fup->fu_dqblk.dqb_curblocks >=
 229                             fup->fu_dqblk.dqb_bsoftlimit ? '+' : '-',
 230                         fup->fu_dqblk.dqb_isoftlimit &&
 231                             fup->fu_dqblk.dqb_curinodes >=
 232                             fup->fu_dqblk.dqb_isoftlimit ? '+' : '-',
 233                         (u_long)(dbtokb(fup->fu_dqblk.dqb_curblocks)),
 234                         (u_long)(dbtokb(fup->fu_dqblk.dqb_bsoftlimit)),
 235                         (u_long)(dbtokb(fup->fu_dqblk.dqb_bhardlimit)),
 236                         fup->fu_dqblk.dqb_bsoftlimit &&
 237                             fup->fu_dqblk.dqb_curblocks >=
 238                             fup->fu_dqblk.dqb_bsoftlimit ?
 239                             timeprt(fup->fu_dqblk.dqb_btime) : "-");
 240                 printf("  %7lu %7lu %7lu %6s\n",
 241                         (u_long)fup->fu_dqblk.dqb_curinodes,
 242                         (u_long)fup->fu_dqblk.dqb_isoftlimit,
 243                         (u_long)fup->fu_dqblk.dqb_ihardlimit,
 244                         fup->fu_dqblk.dqb_isoftlimit &&
 245                             fup->fu_dqblk.dqb_curinodes >=
 246                             fup->fu_dqblk.dqb_isoftlimit ?
 247                             timeprt(fup->fu_dqblk.dqb_itime) : "-");
 248                 fup->fu_dqblk = zerodqblk;
 249         }
 250         return (0);
 251 }
 252
 253 /*
 254  * Check to see if target appears in list of size cnt.
 255  */
 256 int
 257 oneof(char *target, char *list[], int cnt)
 258 {
 259         int i;
 260
 261         for (i = 0; i < cnt; i++)
 262                 if (strcmp(target, list[i]) == 0)
 263                         return (i);
 264         return (-1);
 265 }
 266
 267 /*
 268  * Check to see if a particular quota is to be enabled.
 269  */
 270 int
 271 hasquota(struct fstab *fs, int type, char **qfnamep)
 272 {
 273         char *opt;
 274         char *cp;
 275         static char initname, usrname[100], grpname[100];
 276         static char buf[BUFSIZ];
 277
 278         if (!initname) {
 279                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 280                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 281                 initname = 1;
 282         }
 283         strcpy(buf, fs->fs_mntops);
 284         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 285                 if ((cp = strchr(opt, '=')))
 286                         *cp++ = '\0';
 287                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 288                         break;
 289                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 290                         break;
 291         }
 292         if (!opt)
 293                 return (0);
 294         if (cp) {
 295                 *qfnamep = cp;
 296                 return (1);
 297         }
 298         sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 299         *qfnamep = buf;
 300         return (1);
 301 }
 302
 303 /*
 304  * Routines to manage the file usage table.
 305  *
 306  * Lookup an id of a specific type.
 307  */
 308 struct fileusage *
 309 lookup(u_long id, int type)
 310 {
 311         struct fileusage *fup;
 312
 313         for (fup = fuhead[type][id & (FUHASH-1)]; fup != NULL; fup = fup->fu_next)
 314                 if (fup->fu_id == id)
 315                         return (fup);
 316         return (NULL);
 317 }
 318
 319 /*
 320  * Add a new file usage id if it does not already exist.
 321  */
 322 struct fileusage *
 323 addid(u_long id, int type, char *name)
 324 {
 325         struct fileusage *fup, **fhp;
 326         int len;
 327
 328         if ((fup = lookup(id, type)))
 329                 return (fup);
 330         if (name)
 331                 len = strlen(name);
 332         else
 333                 len = 10;
 334         if ((fup = (struct fileusage *)calloc(1, sizeof(*fup) + len)) == NULL)
 335                 errx(1, "out of memory for fileusage structures");
 336         fhp = &fuhead[type][id & (FUHASH - 1)];
 337         fup->fu_next = *fhp;
 338         *fhp = fup;
 339         fup->fu_id = id;
 340         if (id > highid[type])
 341                 highid[type] = id;
 342         if (name) {
 343                 bcopy(name, fup->fu_name, len + 1);
 344         } else {
 345                 sprintf(fup->fu_name, "%lu", id);
 346         }
 347         return (fup);
 348 }
 349
 350 /*
 351  * Calculate the grace period and return a printable string for it.
 352  */
 353 char *
 354 timeprt(time_t seconds)
 355 {
 356         time_t hours, minutes;
 357         static char buf[20];
 358         static time_t now;
 359
 360         if (now == 0)
 361                 time(&now);
 362         if (now > seconds) {
 363                 strlcpy(buf, "none", sizeof (buf));
 364                 return (buf);
 365         }
 366         seconds -= now;
 367         minutes = (seconds + 30) / 60;
 368         hours = (minutes + 30) / 60;
 369         if (hours >= 36) {
 370                 sprintf(buf, "%lddays", (long)(hours + 12) / 24);
 371                 return (buf);
 372         }
 373         if (minutes >= 60) {
 374                 sprintf(buf, "%2ld:%ld", (long)minutes / 60,
 375                     (long)minutes % 60);
 376                 return (buf);
 377         }
 378         sprintf(buf, "%2ld", (long)minutes);
 379         return (buf);
 380 }