93b5f48962
quota file information is accurate. This makes it about twice as fast when the uid name space is very large.
649 lines
15 KiB
C
649 lines
15 KiB
C
/*
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* Copyright (c) 1980, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Elz at The University of Melbourne.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1980, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)quotacheck.c 8.3 (Berkeley) 1/29/94";
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#endif /* not lint */
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/*
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* Fix up / report on disk quotas & usage
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ffs/fs.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <pwd.h>
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#include <grp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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char *qfname = QUOTAFILENAME;
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char *qfextension[] = INITQFNAMES;
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char *quotagroup = QUOTAGROUP;
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union {
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struct fs sblk;
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char dummy[MAXBSIZE];
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} un;
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#define sblock un.sblk
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long dev_bsize = 1;
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long maxino;
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struct quotaname {
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long flags;
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char grpqfname[MAXPATHLEN + 1];
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char usrqfname[MAXPATHLEN + 1];
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};
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#define HASUSR 1
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#define HASGRP 2
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struct fileusage {
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struct fileusage *fu_next;
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u_long fu_curinodes;
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u_long fu_curblocks;
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u_long fu_id;
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char fu_name[1];
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/* actually bigger */
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};
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#define FUHASH 1024 /* must be power of two */
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struct fileusage *fuhead[MAXQUOTAS][FUHASH];
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int aflag; /* all file systems */
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int gflag; /* check group quotas */
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int uflag; /* check user quotas */
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int vflag; /* verbose */
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int fi; /* open disk file descriptor */
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u_long highid[MAXQUOTAS]; /* highest addid()'ed identifier per type */
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struct fileusage *
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addid __P((u_long, int, char *));
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char *blockcheck __P((char *));
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void bread __P((daddr_t, char *, long));
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int chkquota __P((char *, char *, struct quotaname *));
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void err __P((const char *, ...));
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void freeinodebuf __P((void));
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struct dinode *
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getnextinode __P((ino_t));
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int getquotagid __P((void));
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int hasquota __P((struct fstab *, int, char **));
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struct fileusage *
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lookup __P((u_long, int));
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void *needchk __P((struct fstab *));
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int oneof __P((char *, char*[], int));
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void resetinodebuf __P((void));
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int update __P((char *, char *, int));
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void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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register struct fstab *fs;
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register struct passwd *pw;
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register struct group *gr;
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struct quotaname *auxdata;
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int i, argnum, maxrun, errs;
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long done = 0;
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char ch, *name;
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errs = maxrun = 0;
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while ((ch = getopt(argc, argv, "aguvl:")) != EOF) {
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switch(ch) {
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case 'a':
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aflag++;
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break;
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case 'g':
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gflag++;
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break;
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case 'u':
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uflag++;
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break;
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case 'v':
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vflag++;
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break;
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case 'l':
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maxrun = atoi(optarg);
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if ((argc == 0 && !aflag) || (argc > 0 && aflag))
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usage();
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if (!gflag && !uflag) {
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gflag++;
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uflag++;
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}
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if (gflag) {
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setgrent();
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while ((gr = getgrent()) != 0)
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(void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name);
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endgrent();
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}
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if (uflag) {
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setpwent();
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while ((pw = getpwent()) != 0)
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(void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name);
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endpwent();
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}
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if (aflag)
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exit(checkfstab(1, maxrun, needchk, chkquota));
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if (setfsent() == 0)
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err("%s: can't open", FSTAB);
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while ((fs = getfsent()) != NULL) {
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if (((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
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(argnum = oneof(fs->fs_spec, argv, argc)) >= 0) &&
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(auxdata = needchk(fs)) &&
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(name = blockcheck(fs->fs_spec))) {
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done |= 1 << argnum;
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errs += chkquota(name, fs->fs_file, auxdata);
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}
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}
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endfsent();
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for (i = 0; i < argc; i++)
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if ((done & (1 << i)) == 0)
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fprintf(stderr, "%s not found in %s\n",
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argv[i], FSTAB);
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exit(errs);
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}
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void
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usage()
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{
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(void)fprintf(stderr, "usage:\t%s\n\t%s\n",
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"quotacheck -a [-guv]",
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"quotacheck [-guv] filesys ...");
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exit(1);
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}
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void *
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needchk(fs)
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register struct fstab *fs;
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{
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register struct quotaname *qnp;
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char *qfnp;
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if (strcmp(fs->fs_vfstype, "ufs") ||
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strcmp(fs->fs_type, FSTAB_RW))
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return (NULL);
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if ((qnp = malloc(sizeof(*qnp))) == NULL)
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err("%s", strerror(errno));
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qnp->flags = 0;
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if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) {
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strcpy(qnp->grpqfname, qfnp);
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qnp->flags |= HASGRP;
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}
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if (uflag && hasquota(fs, USRQUOTA, &qfnp)) {
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strcpy(qnp->usrqfname, qfnp);
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qnp->flags |= HASUSR;
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}
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if (qnp->flags)
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return (qnp);
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free(qnp);
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return (NULL);
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}
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/*
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* Scan the specified filesystem to check quota(s) present on it.
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*/
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int
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chkquota(fsname, mntpt, qnp)
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char *fsname, *mntpt;
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register struct quotaname *qnp;
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{
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register struct fileusage *fup;
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register struct dinode *dp;
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int cg, i, mode, errs = 0;
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ino_t ino;
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if ((fi = open(fsname, O_RDONLY, 0)) < 0) {
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perror(fsname);
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return (1);
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}
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if (vflag) {
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(void)printf("*** Checking ");
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if (qnp->flags & HASUSR)
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(void)printf("%s%s", qfextension[USRQUOTA],
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(qnp->flags & HASGRP) ? " and " : "");
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if (qnp->flags & HASGRP)
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(void)printf("%s", qfextension[GRPQUOTA]);
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(void)printf(" quotas for %s (%s)\n", fsname, mntpt);
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}
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sync();
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dev_bsize = 1;
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bread(SBOFF, (char *)&sblock, (long)SBSIZE);
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dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
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maxino = sblock.fs_ncg * sblock.fs_ipg;
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resetinodebuf();
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for (ino = 0, cg = 0; cg < sblock.fs_ncg; cg++) {
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for (i = 0; i < sblock.fs_ipg; i++, ino++) {
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if (ino < ROOTINO)
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continue;
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if ((dp = getnextinode(ino)) == NULL)
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continue;
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if ((mode = dp->di_mode & IFMT) == 0)
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continue;
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if (qnp->flags & HASGRP) {
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fup = addid((u_long)dp->di_gid, GRPQUOTA,
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(char *)0);
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fup->fu_curinodes++;
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if (mode == IFREG || mode == IFDIR ||
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mode == IFLNK)
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fup->fu_curblocks += dp->di_blocks;
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}
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if (qnp->flags & HASUSR) {
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fup = addid((u_long)dp->di_uid, USRQUOTA,
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(char *)0);
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fup->fu_curinodes++;
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if (mode == IFREG || mode == IFDIR ||
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mode == IFLNK)
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fup->fu_curblocks += dp->di_blocks;
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}
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}
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}
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freeinodebuf();
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if (qnp->flags & HASUSR)
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errs += update(mntpt, qnp->usrqfname, USRQUOTA);
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if (qnp->flags & HASGRP)
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errs += update(mntpt, qnp->grpqfname, GRPQUOTA);
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close(fi);
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return (errs);
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}
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/*
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* Update a specified quota file.
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*/
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int
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update(fsname, quotafile, type)
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char *fsname, *quotafile;
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register int type;
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{
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register struct fileusage *fup;
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register FILE *qfi, *qfo;
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register u_long id, lastid;
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register off_t offset;
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struct dqblk dqbuf;
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static int warned = 0;
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static struct dqblk zerodqbuf;
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static struct fileusage zerofileusage;
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if ((qfo = fopen(quotafile, "r+")) == NULL) {
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if (errno == ENOENT)
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qfo = fopen(quotafile, "w+");
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if (qfo) {
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(void) fprintf(stderr,
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"quotacheck: creating quota file %s\n", quotafile);
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#define MODE (S_IRUSR|S_IWUSR|S_IRGRP)
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(void) fchown(fileno(qfo), getuid(), getquotagid());
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(void) fchmod(fileno(qfo), MODE);
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} else {
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(void) fprintf(stderr,
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"quotacheck: %s: %s\n", quotafile, strerror(errno));
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return (1);
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}
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}
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if ((qfi = fopen(quotafile, "r")) == NULL) {
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(void) fprintf(stderr,
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"quotacheck: %s: %s\n", quotafile, strerror(errno));
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(void) fclose(qfo);
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return (1);
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}
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if (quotactl(fsname, QCMD(Q_SYNC, type), (u_long)0, (caddr_t)0) < 0 &&
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errno == EOPNOTSUPP && !warned && vflag) {
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warned++;
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(void)printf("*** Warning: %s\n",
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"Quotas are not compiled into this kernel");
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}
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for (lastid = highid[type], id = 0, offset = 0; id <= lastid;
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id++, offset += sizeof(struct dqblk)) {
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if (fread((char *)&dqbuf, sizeof(struct dqblk), 1, qfi) == 0)
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dqbuf = zerodqbuf;
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if ((fup = lookup(id, type)) == 0)
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fup = &zerofileusage;
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if (dqbuf.dqb_curinodes == fup->fu_curinodes &&
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dqbuf.dqb_curblocks == fup->fu_curblocks) {
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fup->fu_curinodes = 0;
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fup->fu_curblocks = 0;
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continue;
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}
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if (vflag) {
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if (aflag)
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printf("%s: ", fsname);
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printf("%-8s fixed:", fup->fu_name);
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if (dqbuf.dqb_curinodes != fup->fu_curinodes)
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(void)printf("\tinodes %d -> %d",
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dqbuf.dqb_curinodes, fup->fu_curinodes);
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if (dqbuf.dqb_curblocks != fup->fu_curblocks)
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(void)printf("\tblocks %d -> %d",
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dqbuf.dqb_curblocks, fup->fu_curblocks);
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(void)printf("\n");
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}
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/*
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* Reset time limit if have a soft limit and were
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* previously under it, but are now over it.
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*/
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if (dqbuf.dqb_bsoftlimit &&
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dqbuf.dqb_curblocks < dqbuf.dqb_bsoftlimit &&
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fup->fu_curblocks >= dqbuf.dqb_bsoftlimit)
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dqbuf.dqb_btime = 0;
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if (dqbuf.dqb_isoftlimit &&
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dqbuf.dqb_curblocks < dqbuf.dqb_isoftlimit &&
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fup->fu_curblocks >= dqbuf.dqb_isoftlimit)
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dqbuf.dqb_itime = 0;
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dqbuf.dqb_curinodes = fup->fu_curinodes;
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dqbuf.dqb_curblocks = fup->fu_curblocks;
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if (fseek(qfo, offset, SEEK_SET) < 0) {
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(void) fprintf(stderr,
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"quotacheck: %s: seek failed: %s\n",
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quotafile, strerror(errno));
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return(1);
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}
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fwrite((char *)&dqbuf, sizeof(struct dqblk), 1, qfo);
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(void) quotactl(fsname, QCMD(Q_SETUSE, type), id,
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(caddr_t)&dqbuf);
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fup->fu_curinodes = 0;
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fup->fu_curblocks = 0;
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}
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fclose(qfi);
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fflush(qfo);
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ftruncate(fileno(qfo),
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(off_t)((highid[type] + 1) * sizeof(struct dqblk)));
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fclose(qfo);
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return (0);
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}
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/*
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* Check to see if target appears in list of size cnt.
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*/
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int
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oneof(target, list, cnt)
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register char *target, *list[];
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int cnt;
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{
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register int i;
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for (i = 0; i < cnt; i++)
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if (strcmp(target, list[i]) == 0)
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return (i);
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return (-1);
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}
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/*
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* Determine the group identifier for quota files.
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*/
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int
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getquotagid()
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{
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struct group *gr;
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if (gr = getgrnam(quotagroup))
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return (gr->gr_gid);
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return (-1);
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}
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/*
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* Check to see if a particular quota is to be enabled.
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*/
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int
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hasquota(fs, type, qfnamep)
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register struct fstab *fs;
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int type;
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char **qfnamep;
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{
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register char *opt;
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char *cp;
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static char initname, usrname[100], grpname[100];
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static char buf[BUFSIZ];
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if (!initname) {
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(void)snprintf(usrname, sizeof(usrname),
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"%s%s", qfextension[USRQUOTA], qfname);
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(void)snprintf(grpname, sizeof(grpname),
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"%s%s", qfextension[GRPQUOTA], qfname);
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initname = 1;
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}
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strcpy(buf, fs->fs_mntops);
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for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
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if (cp = index(opt, '='))
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*cp++ = '\0';
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if (type == USRQUOTA && strcmp(opt, usrname) == 0)
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break;
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if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
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break;
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}
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if (!opt)
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return (0);
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if (cp)
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*qfnamep = cp;
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else {
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(void)snprintf(buf, sizeof(buf),
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"%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
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*qfnamep = buf;
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}
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return (1);
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}
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/*
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* Routines to manage the file usage table.
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*
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* Lookup an id of a specific type.
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*/
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struct fileusage *
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lookup(id, type)
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u_long id;
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int type;
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{
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register struct fileusage *fup;
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for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
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if (fup->fu_id == id)
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return (fup);
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return (NULL);
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}
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/*
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* Add a new file usage id if it does not already exist.
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*/
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struct fileusage *
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addid(id, type, name)
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u_long id;
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int type;
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char *name;
|
|
{
|
|
struct fileusage *fup, **fhp;
|
|
int len;
|
|
|
|
if (fup = lookup(id, type))
|
|
return (fup);
|
|
if (name)
|
|
len = strlen(name);
|
|
else
|
|
len = 10;
|
|
if ((fup = calloc(1, sizeof(*fup) + len)) == NULL)
|
|
err("%s", strerror(errno));
|
|
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 {
|
|
(void)sprintf(fup->fu_name, "%lu", id);
|
|
if (vflag)
|
|
printf("unknown %cid: %lu\n",
|
|
type == USRQUOTA ? 'u' : 'g', id);
|
|
}
|
|
return (fup);
|
|
}
|
|
|
|
/*
|
|
* Special purpose version of ginode used to optimize pass
|
|
* over all the inodes in numerical order.
|
|
*/
|
|
ino_t nextino, lastinum;
|
|
long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
|
|
struct dinode *inodebuf;
|
|
#define INOBUFSIZE 56*1024 /* size of buffer to read inodes */
|
|
|
|
struct dinode *
|
|
getnextinode(inumber)
|
|
ino_t inumber;
|
|
{
|
|
long size;
|
|
daddr_t dblk;
|
|
static struct dinode *dp;
|
|
|
|
if (inumber != nextino++ || inumber > maxino)
|
|
err("bad inode number %d to nextinode", inumber);
|
|
if (inumber >= lastinum) {
|
|
readcnt++;
|
|
dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum));
|
|
if (readcnt % readpercg == 0) {
|
|
size = partialsize;
|
|
lastinum += partialcnt;
|
|
} else {
|
|
size = inobufsize;
|
|
lastinum += fullcnt;
|
|
}
|
|
bread(dblk, (char *)inodebuf, size);
|
|
dp = inodebuf;
|
|
}
|
|
return (dp++);
|
|
}
|
|
|
|
/*
|
|
* Prepare to scan a set of inodes.
|
|
*/
|
|
void
|
|
resetinodebuf()
|
|
{
|
|
|
|
nextino = 0;
|
|
lastinum = 0;
|
|
readcnt = 0;
|
|
inobufsize = blkroundup(&sblock, INOBUFSIZE);
|
|
fullcnt = inobufsize / sizeof(struct dinode);
|
|
readpercg = sblock.fs_ipg / fullcnt;
|
|
partialcnt = sblock.fs_ipg % fullcnt;
|
|
partialsize = partialcnt * sizeof(struct dinode);
|
|
if (partialcnt != 0) {
|
|
readpercg++;
|
|
} else {
|
|
partialcnt = fullcnt;
|
|
partialsize = inobufsize;
|
|
}
|
|
if (inodebuf == NULL &&
|
|
(inodebuf = malloc((u_int)inobufsize)) == NULL)
|
|
err("%s", strerror(errno));
|
|
while (nextino < ROOTINO)
|
|
getnextinode(nextino);
|
|
}
|
|
|
|
/*
|
|
* Free up data structures used to scan inodes.
|
|
*/
|
|
void
|
|
freeinodebuf()
|
|
{
|
|
|
|
if (inodebuf != NULL)
|
|
free(inodebuf);
|
|
inodebuf = NULL;
|
|
}
|
|
|
|
/*
|
|
* Read specified disk blocks.
|
|
*/
|
|
void
|
|
bread(bno, buf, cnt)
|
|
daddr_t bno;
|
|
char *buf;
|
|
long cnt;
|
|
{
|
|
|
|
if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0 ||
|
|
read(fi, buf, cnt) != cnt)
|
|
err("block %ld", bno);
|
|
}
|
|
|
|
#if __STDC__
|
|
#include <stdarg.h>
|
|
#else
|
|
#include <varargs.h>
|
|
#endif
|
|
|
|
void
|
|
#if __STDC__
|
|
err(const char *fmt, ...)
|
|
#else
|
|
err(fmt, va_alist)
|
|
char *fmt;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
va_list ap;
|
|
#if __STDC__
|
|
va_start(ap, fmt);
|
|
#else
|
|
va_start(ap);
|
|
#endif
|
|
(void)fprintf(stderr, "quotacheck: ");
|
|
(void)vfprintf(stderr, fmt, ap);
|
|
va_end(ap);
|
|
(void)fprintf(stderr, "\n");
|
|
exit(1);
|
|
/* NOTREACHED */
|
|
}
|