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quotaon.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (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.
 * 
 * The 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[] = "@(#)quotaon.c     8.1 (Berkeley) 6/6/93";
#endif /* not lint */

/*
 * Turn quota on/off for a filesystem.
 */
#include <sys/param.h>
#include <sys/file.h>
#include <sys/mount.h>
#ifdef __APPLE__
#include <sys/stat.h>
#endif /* __APPLE__ */
#include <ufs/ufs/quota.h>
#include <stdio.h>
#include <fstab.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

/* Internal functions */
void usage(char *whoami);

char *qfname = QUOTAFILENAME;
char *qfextension[] = INITQFNAMES;

int   aflag;            /* all file systems */
int   gflag;            /* operate on group quotas */
int   uflag;            /* operate on user quotas */
int   vflag;            /* verbose */

int main(argc, argv)
      int argc;
      char **argv;
{
      register struct fstab *fs;
      char ch, *qfnp, *whoami, *rindex();
      long argnum, done = 0;
      int i, offmode = 0, errs = 0;
#ifdef __APPLE__
      int nfst;
      struct statfs *fst;
#endif /* __APPLE__ */
      extern char *optarg;
      extern int optind;

      whoami = rindex(*argv, '/') + 1;
      if (whoami == (char *)1)
            whoami = *argv;
      if (strcmp(whoami, "quotaoff") == 0)
            offmode++;
      else if (strcmp(whoami, "quotaon") != 0) {
            fprintf(stderr, "Name must be quotaon or quotaoff not %s\n",
                  whoami);
            exit(1);
      }
      while ((ch = getopt(argc, argv, "avug")) != EOF) {
            switch(ch) {
            case 'a':
                  aflag++;
                  break;
            case 'g':
                  gflag++;
                  break;
            case 'u':
                  uflag++;
                  break;
            case 'v':
                  vflag++;
                  break;
            default:
                  usage(whoami);
            }
      }
      argc -= optind;
      argv += optind;
      if (argc <= 0 && !aflag)
            usage(whoami);
      if (!gflag && !uflag) {
            gflag++;
            uflag++;
      }

#ifdef __APPLE__
      nfst = getmntinfo(&fst, MNT_WAIT);
      if (nfst==0) {
        fprintf(stderr, "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(fst[i].f_flags & MNT_RDONLY) {
          errs++;
          continue;
        }

        if (aflag) {
          if (gflag && hasquota(&fst[i], GRPQUOTA, &qfnp))
            errs += quotaonoff(&fst[i], offmode, GRPQUOTA, qfnp);
          if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
            errs += quotaonoff(&fst[i], offmode, 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 += quotaonoff(&fst[i], offmode, GRPQUOTA, qfnp);
          if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
            errs += quotaonoff(&fst[i], offmode, USRQUOTA, qfnp);
        }
      }
#else
      setfsent();
      while ((fs = getfsent()) != NULL) {
            if (strcmp(fs->fs_vfstype, "ufs") ||
                strcmp(fs->fs_type, FSTAB_RW))
                  continue;
            if (aflag) {
                  if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
                        errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
                  if (uflag && hasquota(fs, USRQUOTA, &qfnp))
                        errs += quotaonoff(fs, offmode, 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 += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
                  if (uflag && hasquota(fs, USRQUOTA, &qfnp))
                        errs += quotaonoff(fs, offmode, 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(whoami)
      char *whoami;
{

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

#ifdef __APPLE__
int quotaonoff(fst, offmode, type, qfpathname)
      register struct statfs *fst;
      int offmode, type;
      char *qfpathname;
{
        if (strcmp(fst->f_mntonname, "/") && (fst->f_flags & MNT_RDONLY))
            return (1);
      if (offmode) {
            if (quotactl(fst->f_mntonname, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
                  fprintf(stderr, "quotaoff: ");
                  perror(fst->f_mntonname);
                  return (1);
            }
            if (vflag)
              printf("%s: %s quotas turned off\n", fst->f_mntonname,
                         qfextension[type]);
            return (0);
      }
      if (quotactl(fst->f_mntonname, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
            fprintf(stderr, "quotaon: using %s on ", qfpathname);
            perror(fst->f_mntonname);
            return (1);
      }
      if (vflag)
            printf("%s: %s quotas turned on\n", fst->f_mntonname,
                qfextension[type]);
      return (0);
}
#else
int quotaonoff(fs, offmode, type, qfpathname)
      register struct fstab *fs;
      int offmode, type;
      char *qfpathname;
{

      if (strcmp(fs->fs_file, "/") && readonly(fs))
            return (1);
      if (offmode) {
            if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
                  fprintf(stderr, "quotaoff: ");
                  perror(fs->fs_file);
                  return (1);
            }
            if (vflag)
                  printf("%s: quotas turned off\n", fs->fs_file);
            return (0);
      }
      if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
            fprintf(stderr, "quotaon: using %s on", qfpathname);
            perror(fs->fs_file);
            return (1);
      }
      if (vflag)
            printf("%s: %s quotas turned on\n", fs->fs_file,
                qfextension[type]);
      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
int 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__ */


/*
 * Verify file system is mounted and not readonly.
 */
int readonly(fs)
      register struct fstab *fs;
{
      struct statfs fsbuf;

      if (statfs(fs->fs_file, &fsbuf) < 0 ||
          strcmp(fsbuf.f_mntonname, fs->fs_file) ||
          strcmp(fsbuf.f_mntfromname, fs->fs_spec)) {
            printf("%s: not mounted\n", fs->fs_file);
            return (1);
      }
      if (fsbuf.f_flags & MNT_RDONLY) {
            printf("%s: mounted read-only\n", fs->fs_file);
            return (1);
      }
      return (0);
}

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