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repquota.c

/*
 * Copyright (c) 2002-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1980, 1990, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Robert Elz at The University of Melbourne.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the University of
 *    California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1980, 1990, 1993\n\
      The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)repquota.c    8.2 (Berkeley) 11/22/94";
#endif /* not lint */

/*
 * Quota report
 */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/queue.h>
#include <sys/quota.h>

#ifdef __APPLE__
#include <sys/mount.h>
#endif /* __APPLE__ */
#include <errno.h>
#include <fstab.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef __APPLE__
#include <libkern/OSByteOrder.h>
#endif /* __APPLE__ */

char *qfname = QUOTAFILENAME;
char *qfextension[] = INITQFNAMES;
#ifdef __APPLE__
u_int32_t quotamagic[MAXQUOTAS] = INITQMAGICS;
#endif /* __APPLE__ */

#ifndef __APPLE__
struct fileusage {
      struct      fileusage *fu_next;
      struct      dqblk fu_dqblk;
      u_long      fu_id;
      char  fu_name[1];
      /* actually bigger */
};
struct fileusage * addid(u_long, int);
struct fileusage * lookup(u_long, int);

#define FUHASH 1024     /* must be power of two */
struct fileusage *fuhead[MAXQUOTAS][FUHASH];
u_long highid[MAXQUOTAS];     /* highest addid()'ed identifier per type */
#endif /* NOT __APPLE__ */

int   vflag;                  /* verbose */
int   aflag;                  /* all file systems */

int   hasquota(struct statfs *, int, char **);
int   repquota(struct statfs *, int, char *);
int   oneof(char *, char **, int);
void  usage(void);

int
main(argc, argv)
      int argc;
      char **argv;
{
#ifndef __APPLE__
      register struct fstab *fs;
      register struct passwd *pw;
      register struct group *gr;
#endif /* __APPLE__ */
      int gflag = 0, uflag = 0, errs = 0;
      long i, argnum, done = 0;
#ifdef __APPLE__
        int nfst;
        struct statfs *fst;
#endif /* __APPLE__ */
      extern char *optarg;
      extern int optind;
      char ch, *qfnp;

      while ((ch = getopt(argc, argv, "aguv")) != EOF) {
            switch(ch) {
            case 'a':
                  aflag++;
                  break;
            case 'g':
                  gflag++;
                  break;
            case 'u':
                  uflag++;
                  break;
            case 'v':
                  vflag++;
                  break;
            default:
                  usage();
            }
      }
      argc -= optind;
      argv += optind;
      if (argc == 0 && !aflag)
            usage();
      if (!gflag && !uflag) {
            if (aflag)
                  gflag++;
            uflag++;
      }

#ifdef __APPLE__
        nfst = getmntinfo(&fst, MNT_WAIT);
        if (nfst==0) {
          fprintf(stderr, "repquota: no filesystems mounted");
          return(1);
        }

        for (i=0; i<nfst; i++) {
                if(strcmp(fst[i].f_fstypename, "hfs")) {
                if (strcmp(fst[i].f_fstypename, "ufs"))
                    continue;
            }
            if (aflag) {
                  if (gflag && hasquota(&fst[i], GRPQUOTA, &qfnp))
                        errs += repquota(&fst[i], GRPQUOTA, qfnp);
                  if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
                        errs += repquota(&fst[i], USRQUOTA, qfnp);
                  continue;
            }
            if ((argnum = oneof(fst[i].f_mntonname, argv, argc)) >= 0 ||
                (argnum = oneof(fst[i].f_mntfromname, argv, argc)) >= 0) {
                  done |= 1 << argnum;
                  if (gflag && hasquota(&fst[i], GRPQUOTA, &qfnp))
                        errs += repquota(&fst[i], GRPQUOTA, qfnp);
                  if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
                        errs += repquota(&fst[i], USRQUOTA, qfnp);
            }
      }
#else
      if (gflag) {
            setgrent();
            while ((gr = getgrent()) != 0)
                  (void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name);
            endgrent();
      }
      if (uflag) {
            setpwent();
            while ((pw = getpwent()) != 0)
                  (void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name);
            endpwent();
      }

      setfsent();
      while ((fs = getfsent()) != NULL) {
            if (strcmp(fs->fs_vfstype, "ufs"))
                  continue;
            if (aflag) {
                  if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
                        errs += repquota(fs, GRPQUOTA, qfnp);
                  if (uflag && hasquota(fs, USRQUOTA, &qfnp))
                        errs += repquota(fs, USRQUOTA, qfnp);
                  continue;
            }
            if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
                (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
                  done |= 1 << argnum;
                  if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
                        errs += repquota(fs, GRPQUOTA, qfnp);
                  if (uflag && hasquota(fs, USRQUOTA, &qfnp))
                        errs += repquota(fs, USRQUOTA, qfnp);
            }
      }
      endfsent();
#endif /* __APPLE */
      for (i = 0; i < argc; i++)
            if ((done & (1 << i)) == 0)
                  fprintf(stderr, "%s not found in fstab\n", argv[i]);
      exit(errs);
}

void
usage()
{
      fprintf(stderr, "Usage:\n\t%s\n\t%s\n",
            "repquota [-v] [-g] [-u] -a",
            "repquota [-v] [-g] [-u] filesys ...");
      exit(1);
}

#ifdef __APPLE__
int
repquota(fst, type, qfpathname)
        struct statfs *fst;
      int type;
      char *qfpathname;
{
      FILE *qf;
      u_long id;
      struct dqblk dqbuf;
      char *timeprt();
      char *name;
      struct dqfilehdr dqhdr;
      static int warned = 0;
      static int multiple = 0;
      extern int errno;
      int i;
      struct passwd *pw;
      struct group *gr;
      int maxentries;
      u_int64_t bsoftlimit;
      u_int32_t isoftlimit;
      u_int64_t curbytes;
      u_int32_t curinodes;


      if (quotactl(fst->f_mntonname, QCMD(Q_SYNC, type), 0, 0) < 0 &&
          errno == EOPNOTSUPP && !warned && vflag) {
            warned++;
            fprintf(stdout,
                "*** Warning: Quotas are not compiled into this kernel\n");
      }
      if (multiple++)
            printf("\n");
      if (vflag)
            fprintf(stdout, "*** Report for %s quotas on %s (%s)\n",
                qfextension[type], fst->f_mntonname, fst->f_mntfromname);
      if ((qf = fopen(qfpathname, "r")) == NULL) {
            perror(qfpathname);
            return (1);
      }

      /* Read in the quota file header. */
      if (fread((char *)&dqhdr, sizeof(struct dqfilehdr), 1, qf) > 0) {
            /* Check for non big endian file. */
            if (OSSwapBigToHostInt32(dqhdr.dqh_magic) != quotamagic[type] &&
                OSSwapInt32(dqhdr.dqh_magic) == quotamagic[type]) {
                  (void) fprintf(stderr,
                      "*** Error: %s: not in big endian byte order\n", qfpathname);
                  (void) fclose(qf);
                  return (1);
            }
            /* Sanity check the quota file header. */
            if ((OSSwapBigToHostInt32(dqhdr.dqh_magic) != quotamagic[type]) ||
                (OSSwapBigToHostInt32(dqhdr.dqh_version) > QF_VERSION) ||
                (!powerof2(OSSwapBigToHostInt32(dqhdr.dqh_maxentries)))) {
                  (void) fprintf(stderr,
                      "repquota: %s: not a valid quota file\n", qfpathname);
                  (void) fclose(qf);
                  return (1);
            }
      }
      
      printf("                        1K Block limits               File limits\n");
      printf("User                used        soft        hard  grace    used  soft  hard  grace\n");

      maxentries = OSSwapBigToHostInt32(dqhdr.dqh_maxentries);

      /* Read the entries in the quota file. */
      for (i = 0; i < maxentries; i++) {
            if (fread(&dqbuf, sizeof(struct dqblk), 1, qf) == 0 && feof(qf))
                  break;
            id = OSSwapBigToHostInt32(dqbuf.dqb_id);
            if (id == 0)
                  continue;
            if (dqbuf.dqb_curinodes == 0 && dqbuf.dqb_curbytes == 0LL)
                  continue;
            name = NULL;
            switch (type) {
            case USRQUOTA:
                  if ((pw = getpwuid(id)) != 0)
                        name = pw->pw_name;
                  break;
            case GRPQUOTA:
                  if ((gr = getgrgid(id)) != 0)
                        name = gr->gr_name;
                  break;
            }
            if (name)
                  printf("%-10s", name);
            else
                  printf("%-10u", (unsigned int)id);

            bsoftlimit = OSSwapBigToHostInt64( dqbuf.dqb_bsoftlimit );
            isoftlimit = OSSwapBigToHostInt32( dqbuf.dqb_isoftlimit );
            curbytes   = OSSwapBigToHostInt64( dqbuf.dqb_curbytes );
            curinodes  = OSSwapBigToHostInt32( dqbuf.dqb_curinodes );

            printf("%c%c%12qd%12qd%12qd%7s",
                  bsoftlimit && 
                      curbytes >= 
                      bsoftlimit ? '+' : '-',
                  isoftlimit &&
                      curinodes >=
                      isoftlimit ? '+' : '-',
                  curbytes / 1024,
                  bsoftlimit / 1024,
                  OSSwapBigToHostInt64( dqbuf.dqb_bhardlimit ) / 1024,
                  bsoftlimit && 
                      curbytes >= 
                      bsoftlimit ?
                      timeprt(OSSwapBigToHostInt32(dqbuf.dqb_btime)) : "");
            printf("  %6d%6d%6d%7s\n",
                  curinodes,
                  isoftlimit,
                  OSSwapBigToHostInt32( dqbuf.dqb_ihardlimit ),
                  isoftlimit &&
                      curinodes >=
                      isoftlimit ?
                      timeprt(OSSwapBigToHostInt32(dqbuf.dqb_itime)) : "");
      }
      fclose(qf);

      return (0);
}
#else
repquota(fs, type, qfpathname)
      register struct fstab *fs;
      int type;
      char *qfpathname;
{
      register struct fileusage *fup;
      FILE *qf;
      u_long id;
      struct dqblk dqbuf;
      char *timeprt();
      static struct dqblk zerodqblk;
      static int warned = 0;
      static int multiple = 0;
      extern int errno;

      if (quotactl(fs->fs_file, QCMD(Q_SYNC, type), 0, 0) < 0 &&
          errno == EOPNOTSUPP && !warned && vflag) {
            warned++;
            fprintf(stdout,
                "*** Warning: Quotas are not compiled into this kernel\n");
      }
      if (multiple++)
            printf("\n");
      if (vflag)
            fprintf(stdout, "*** Report for %s quotas on %s (%s)\n",
                qfextension[type], fs->fs_file, fs->fs_spec);
      if ((qf = fopen(qfpathname, "r")) == NULL) {
            perror(qfpathname);
            return (1);
      }
      for (id = 0; ; id++) {
            fread(&dqbuf, sizeof(struct dqblk), 1, qf);
            if (feof(qf))
                  break;
            if (dqbuf.dqb_curinodes == 0 && dqbuf.dqb_curblocks == 0)
                  continue;
            if ((fup = lookup(id, type)) == 0)
                  fup = addid(id, type, (char *)0);
            fup->fu_dqblk = dqbuf;
      }
      fclose(qf);
      printf("                        Block limits               File limits\n");
      printf("User            used    soft    hard  grace    used  soft  hard  grace\n");

      for (id = 0; id <= highid[type]; id++) {
            fup = lookup(id, type);
            if (fup == 0)
                  continue;
            if (fup->fu_dqblk.dqb_curinodes == 0 &&
                fup->fu_dqblk.dqb_curblocks == 0)
                  continue;
            printf("%-10s", fup->fu_name);
            printf("%c%c%8d%8d%8d%7s",
                  fup->fu_dqblk.dqb_bsoftlimit && 
                      fup->fu_dqblk.dqb_curblocks >= 
                      fup->fu_dqblk.dqb_bsoftlimit ? '+' : '-',
                  fup->fu_dqblk.dqb_isoftlimit &&
                      fup->fu_dqblk.dqb_curinodes >=
                      fup->fu_dqblk.dqb_isoftlimit ? '+' : '-',
                  dbtob(fup->fu_dqblk.dqb_curblocks) / 1024,
                  dbtob(fup->fu_dqblk.dqb_bsoftlimit) / 1024,
                  dbtob(fup->fu_dqblk.dqb_bhardlimit) / 1024,
                  fup->fu_dqblk.dqb_bsoftlimit && 
                      fup->fu_dqblk.dqb_curblocks >= 
                      fup->fu_dqblk.dqb_bsoftlimit ?
                      timeprt(fup->fu_dqblk.dqb_btime) : "");
            printf("  %6d%6d%6d%7s\n",
                  fup->fu_dqblk.dqb_curinodes,
                  fup->fu_dqblk.dqb_isoftlimit,
                  fup->fu_dqblk.dqb_ihardlimit,
                  fup->fu_dqblk.dqb_isoftlimit &&
                      fup->fu_dqblk.dqb_curinodes >=
                      fup->fu_dqblk.dqb_isoftlimit ?
                      timeprt(fup->fu_dqblk.dqb_itime) : "");
            fup->fu_dqblk = zerodqblk;
      }
      return (0);
}
#endif /* __APPLE */

/*
 * Check to see if target appears in list of size cnt.
 */
int
oneof(target, list, cnt)
      register char *target, **list;
      int cnt;
{
      register int i;

      for (i = 0; i < cnt; i++)
            if (strcmp(target, list[i]) == 0)
                  return (i);
      return (-1);
}

/*
 * Check to see if a particular quota is to be enabled.
 */
#ifdef __APPLE__
int
hasquota(fst, type, qfnamep)
        register struct statfs *fst;
      int type;
      char **qfnamep;
{
        struct stat sb;
      static char initname, usrname[100], grpname[100];
      static char buf[BUFSIZ];

      if (!initname) {
            sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
            sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
            initname = 1;
      }

        /*
        We only support the default path to the
        on disk quota files.
      */

        (void)sprintf(buf, "%s/%s.%s", fst->f_mntonname,
                  QUOTAOPSNAME, qfextension[type] );
        if (stat(buf, &sb) != 0) {
          /* There appears to be no mount option file */
          return(0);
        }

      (void) sprintf(buf, "%s/%s.%s", fst->f_mntonname, qfname, qfextension[type]);
      *qfnamep = buf;
      return (1);
}
#else
hasquota(fs, type, qfnamep)
      register struct fstab *fs;
      int type;
      char **qfnamep;
{
      register char *opt;
      char *cp, *index(), *strtok();
      static char initname, usrname[100], grpname[100];
      static char buf[BUFSIZ];

      if (!initname) {
            sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
            sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
            initname = 1;
      }
      strcpy(buf, fs->fs_mntops);
      for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
            if (cp = index(opt, '='))
                  *cp++ = '\0';
            if (type == USRQUOTA && strcmp(opt, usrname) == 0)
                  break;
            if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
                  break;
      }
      if (!opt)
            return (0);
      if (cp) {
            *qfnamep = cp;
            return (1);
      }
      (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
      *qfnamep = buf;
      return (1);
}
#endif /* __APPLE__ */


#ifndef __APPLE__

/*
 * Routines to manage the file usage table.
 *
 * Lookup an id of a specific type.
 */
struct fileusage *
lookup(id, type)
      u_long id;
      int type;
{
      register struct fileusage *fup;

      for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
            if (fup->fu_id == id)
                  return (fup);
      return ((struct fileusage *)0);
}

/*
 * Add a new file usage id if it does not already exist.
 */
struct fileusage *
addid(id, type, name)
      u_long id;
      int type;
      char *name;
{
      struct fileusage *fup, **fhp;
      int len;
      extern char *calloc();

      if (fup = lookup(id, type))
            return (fup);
      if (name)
            len = strlen(name);
      else
            len = 10;
      if ((fup = (struct fileusage *)calloc(1, sizeof(*fup) + len)) == NULL) {
            fprintf(stderr, "out of memory for fileusage structures\n");
            exit(1);
      }
      fhp = &fuhead[type][id & (FUHASH - 1)];
      fup->fu_next = *fhp;
      *fhp = fup;
      fup->fu_id = id;
      if (id > highid[type])
            highid[type] = id;
      if (name) {
            bcopy(name, fup->fu_name, len + 1);
      } else {
            sprintf(fup->fu_name, "%u", id);
      }
      return (fup);
}
#endif /* !__APPLE__ */

/*
 * Calculate the grace period and return a printable string for it.
 */
char *
timeprt(seconds)
      time_t seconds;
{
      time_t hours, minutes;
      static char buf[20];
      static time_t now;

      if (now == 0)
            time(&now);
      if (now > seconds)
            return ("none");
      seconds -= now;
      minutes = (seconds + 30) / 60;
      hours = (minutes + 30) / 60;
      if (hours >= 36) {
            sprintf(buf, "%ddays", (hours + 12) / 24);
            return (buf);
      }
      if (minutes >= 60) {
            sprintf(buf, "%2d:%d", minutes / 60, minutes % 60);
            return (buf);
      }
      sprintf(buf, "%2d", minutes);
      return (buf);
}

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