mirror of
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e25a029eb2
Original code by: Gleb Kurtsou
726 lines
18 KiB
C
726 lines
18 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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* 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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#if 0
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#ifndef lint
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static const 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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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/disklabel.h>
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#include <sys/mount.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 <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <grp.h>
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#include <libutil.h>
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#include <pwd.h>
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#include <stdint.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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#include <unistd.h>
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#include "quotacheck.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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} sb_un;
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#define sblock sb_un.sblk
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union {
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struct cg cgblk;
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char dummy[MAXBSIZE];
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} cg_un;
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#define cgblk cg_un.cgblk
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long dev_bsize = 1;
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ino_t maxino;
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union dinode {
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struct ufs1_dinode dp1;
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struct ufs2_dinode dp2;
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};
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#define DIP(dp, field) \
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((sblock.fs_magic == FS_UFS1_MAGIC) ? \
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(dp)->dp1.field : (dp)->dp2.field)
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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 cflag; /* convert format to 32 or 64 bit size */
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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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struct fileusage *
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addid(u_long, int, char *, const char *);
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void bread(ufs2_daddr_t, char *, long);
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void freeinodebuf(void);
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union dinode *
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getnextinode(ino_t);
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int getquotagid(void);
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struct fileusage *
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lookup(u_long, int);
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int oneof(char *, char*[], int);
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void printchanges(const char *, int, struct dqblk *, struct fileusage *,
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u_long);
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void setinodebuf(ino_t);
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int update(const char *, struct quotafile *, int);
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void usage(void);
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int
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main(int argc, char *argv[])
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{
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struct fstab *fs;
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struct passwd *pw;
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struct group *gr;
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struct quotafile *qfu, *qfg;
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int i, argnum, maxrun, errs, ch;
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long done = 0;
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char *name;
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errs = maxrun = 0;
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while ((ch = getopt(argc, argv, "ac:guvl:")) != -1) {
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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 'c':
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if (cflag)
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usage();
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cflag = atoi(optarg);
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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 (cflag && cflag != 32 && cflag != 64)
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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()) != NULL)
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(void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name,
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NULL);
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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()) != NULL)
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(void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name,
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NULL);
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endpwent();
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}
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/*
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* The maxrun (-l) option is now deprecated.
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*/
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if (maxrun > 0)
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warnx("the -l option is now deprecated");
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if (aflag)
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exit(checkfstab(uflag, gflag));
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if (setfsent() == 0)
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errx(1, "%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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(name = blockcheck(fs->fs_spec))) {
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done |= 1 << argnum;
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qfu = NULL;
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if (uflag)
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qfu = quota_open(fs, USRQUOTA, O_CREAT|O_RDWR);
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qfg = NULL;
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if (gflag)
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qfg = quota_open(fs, GRPQUOTA, O_CREAT|O_RDWR);
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if (qfu == NULL && qfg == NULL)
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continue;
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errs += chkquota(name, qfu, qfg);
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if (qfu)
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quota_close(qfu);
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if (qfg)
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quota_close(qfg);
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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(void)
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{
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(void)fprintf(stderr, "%s\n%s\n",
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"usage: quotacheck [-guv] [-c 32 | 64] [-l maxrun] -a",
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" quotacheck [-guv] [-c 32 | 64] filesystem ...");
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exit(1);
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}
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/*
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* Possible superblock locations ordered from most to least likely.
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*/
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static int sblock_try[] = SBLOCKSEARCH;
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/*
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* Scan the specified file system to check quota(s) present on it.
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*/
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int
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chkquota(char *specname, struct quotafile *qfu, struct quotafile *qfg)
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{
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struct fileusage *fup;
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union dinode *dp;
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int cg, i, mode, errs = 0;
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ino_t ino, inosused, userino = 0, groupino = 0;
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dev_t dev, userdev = 0, groupdev = 0;
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struct stat sb;
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const char *mntpt;
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char *cp;
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if (qfu != NULL)
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mntpt = quota_fsname(qfu);
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else if (qfg != NULL)
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mntpt = quota_fsname(qfg);
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else
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errx(1, "null quotafile information passed to chkquota()\n");
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if (cflag) {
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if (vflag && qfu != NULL)
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printf("%s: convert user quota to %d bits\n",
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mntpt, cflag);
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if (qfu != NULL && quota_convert(qfu, cflag) < 0) {
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if (errno == EBADF)
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errx(1,
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"%s: cannot convert an active quota file",
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mntpt);
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err(1, "user quota conversion to size %d failed",
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cflag);
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}
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if (vflag && qfg != NULL)
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printf("%s: convert group quota to %d bits\n",
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mntpt, cflag);
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if (qfg != NULL && quota_convert(qfg, cflag) < 0) {
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if (errno == EBADF)
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errx(1,
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"%s: cannot convert an active quota file",
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mntpt);
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err(1, "group quota conversion to size %d failed",
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cflag);
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}
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}
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if ((fi = open(specname, O_RDONLY, 0)) < 0) {
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warn("%s", specname);
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return (1);
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}
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if ((stat(mntpt, &sb)) < 0) {
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warn("%s", mntpt);
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return (1);
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}
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dev = sb.st_dev;
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if (vflag) {
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(void)printf("*** Checking ");
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if (qfu)
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(void)printf("user%s", qfg ? " and " : "");
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if (qfg)
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(void)printf("group");
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(void)printf(" quotas for %s (%s)\n", specname, mntpt);
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}
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if (qfu) {
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if (stat(quota_qfname(qfu), &sb) == 0) {
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userino = sb.st_ino;
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userdev = sb.st_dev;
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}
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}
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if (qfg) {
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if (stat(quota_qfname(qfg), &sb) == 0) {
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groupino = sb.st_ino;
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groupdev = sb.st_dev;
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}
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}
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sync();
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dev_bsize = 1;
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for (i = 0; sblock_try[i] != -1; i++) {
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bread(sblock_try[i], (char *)&sblock, (long)SBLOCKSIZE);
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if ((sblock.fs_magic == FS_UFS1_MAGIC ||
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(sblock.fs_magic == FS_UFS2_MAGIC &&
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sblock.fs_sblockloc == sblock_try[i])) &&
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sblock.fs_bsize <= MAXBSIZE &&
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sblock.fs_bsize >= sizeof(struct fs))
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break;
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}
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if (sblock_try[i] == -1) {
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warn("Cannot find file system superblock");
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return (1);
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}
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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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for (cg = 0; cg < sblock.fs_ncg; cg++) {
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ino = cg * sblock.fs_ipg;
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setinodebuf(ino);
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bread(fsbtodb(&sblock, cgtod(&sblock, cg)), (char *)(&cgblk),
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sblock.fs_cgsize);
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if (sblock.fs_magic == FS_UFS2_MAGIC)
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inosused = cgblk.cg_initediblk;
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else
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inosused = sblock.fs_ipg;
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/*
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* If we are using soft updates, then we can trust the
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* cylinder group inode allocation maps to tell us which
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* inodes are allocated. We will scan the used inode map
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* to find the inodes that are really in use, and then
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* read only those inodes in from disk.
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*/
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if (sblock.fs_flags & FS_DOSOFTDEP) {
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if (!cg_chkmagic(&cgblk))
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errx(1, "CG %d: BAD MAGIC NUMBER\n", cg);
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cp = &cg_inosused(&cgblk)[(inosused - 1) / CHAR_BIT];
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for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
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if (*cp == 0)
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continue;
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for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
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if (*cp & i)
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break;
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inosused--;
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}
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break;
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}
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if (inosused <= 0)
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continue;
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}
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for (i = 0; i < inosused; i++, ino++) {
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if ((dp = getnextinode(ino)) == NULL || ino < ROOTINO ||
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(mode = DIP(dp, di_mode) & IFMT) == 0)
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continue;
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/*
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* XXX: Do not account for UIDs or GIDs that appear
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* to be negative to prevent generating 100GB+
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* quota files.
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*/
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if ((int)DIP(dp, di_uid) < 0 ||
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(int)DIP(dp, di_gid) < 0) {
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if (vflag) {
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if (aflag)
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(void)printf("%s: ", mntpt);
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(void)printf("out of range UID/GID (%u/%u) ino=%ju\n",
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DIP(dp, di_uid), DIP(dp,di_gid),
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(uintmax_t)ino);
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}
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continue;
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}
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/*
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* Do not account for file system snapshot files
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* or the actual quota data files to be consistent
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* with how they are handled inside the kernel.
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*/
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#ifdef SF_SNAPSHOT
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if (DIP(dp, di_flags) & SF_SNAPSHOT)
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continue;
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#endif
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if ((ino == userino && dev == userdev) ||
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(ino == groupino && dev == groupdev))
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continue;
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if (qfg) {
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fup = addid((u_long)DIP(dp, di_gid), GRPQUOTA,
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(char *)0, mntpt);
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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 += DIP(dp, di_blocks);
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}
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if (qfu) {
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fup = addid((u_long)DIP(dp, di_uid), USRQUOTA,
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(char *)0, mntpt);
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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 += DIP(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 (qfu)
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errs += update(mntpt, qfu, USRQUOTA);
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if (qfg)
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errs += update(mntpt, qfg, GRPQUOTA);
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close(fi);
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(void)fflush(stdout);
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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(const char *fsname, struct quotafile *qf, int type)
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{
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struct fileusage *fup;
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u_long id, lastid, highid = 0;
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struct dqblk dqbuf;
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struct stat sb;
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static struct dqblk zerodqbuf;
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static struct fileusage zerofileusage;
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/*
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* Scan the on-disk quota file and record any usage changes.
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*/
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lastid = quota_maxid(qf);
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for (id = 0; id <= lastid; id++) {
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if (quota_read(qf, &dqbuf, id) < 0)
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dqbuf = zerodqbuf;
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if ((fup = lookup(id, type)) == NULL)
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fup = &zerofileusage;
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if (fup->fu_curinodes || fup->fu_curblocks ||
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dqbuf.dqb_bsoftlimit || dqbuf.dqb_bhardlimit ||
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dqbuf.dqb_isoftlimit || dqbuf.dqb_ihardlimit)
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highid = id;
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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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printchanges(fsname, type, &dqbuf, fup, id);
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dqbuf.dqb_curinodes = fup->fu_curinodes;
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dqbuf.dqb_curblocks = fup->fu_curblocks;
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(void) quota_write_usage(qf, &dqbuf, id);
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fup->fu_curinodes = 0;
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fup->fu_curblocks = 0;
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}
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/*
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* Walk the hash table looking for ids with non-zero usage
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* that are not currently recorded in the quota file. E.g.
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* ids that are past the end of the current file.
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*/
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for (id = 0; id < FUHASH; id++) {
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for (fup = fuhead[type][id]; fup != NULL; fup = fup->fu_next) {
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if (fup->fu_id <= lastid)
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continue;
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if (fup->fu_curinodes == 0 && fup->fu_curblocks == 0)
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continue;
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bzero(&dqbuf, sizeof(struct dqblk));
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if (fup->fu_id > highid)
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highid = fup->fu_id;
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printchanges(fsname, type, &dqbuf, fup, fup->fu_id);
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dqbuf.dqb_curinodes = fup->fu_curinodes;
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dqbuf.dqb_curblocks = fup->fu_curblocks;
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(void) quota_write_usage(qf, &dqbuf, fup->fu_id);
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fup->fu_curinodes = 0;
|
|
fup->fu_curblocks = 0;
|
|
}
|
|
}
|
|
/*
|
|
* If this is old format file, then size may be smaller,
|
|
* so ensure that we only truncate when it will make things
|
|
* smaller, and not if it will grow an old format file.
|
|
*/
|
|
if (highid < lastid &&
|
|
stat(quota_qfname(qf), &sb) == 0 &&
|
|
sb.st_size > (((off_t)highid + 2) * sizeof(struct dqblk)))
|
|
truncate(quota_qfname(qf),
|
|
(((off_t)highid + 2) * sizeof(struct dqblk)));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check to see if target appears in list of size cnt.
|
|
*/
|
|
int
|
|
oneof(char *target, char *list[], int cnt)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < cnt; i++)
|
|
if (strcmp(target, list[i]) == 0)
|
|
return (i);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Determine the group identifier for quota files.
|
|
*/
|
|
int
|
|
getquotagid(void)
|
|
{
|
|
struct group *gr;
|
|
|
|
if ((gr = getgrnam(quotagroup)) != NULL)
|
|
return (gr->gr_gid);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Routines to manage the file usage table.
|
|
*
|
|
* Lookup an id of a specific type.
|
|
*/
|
|
struct fileusage *
|
|
lookup(u_long id, int type)
|
|
{
|
|
struct fileusage *fup;
|
|
|
|
for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
|
|
if (fup->fu_id == id)
|
|
return (fup);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Add a new file usage id if it does not already exist.
|
|
*/
|
|
struct fileusage *
|
|
addid(u_long id, int type, char *name, const char *fsname)
|
|
{
|
|
struct fileusage *fup, **fhp;
|
|
int len;
|
|
|
|
if ((fup = lookup(id, type)) != NULL)
|
|
return (fup);
|
|
if (name)
|
|
len = strlen(name);
|
|
else
|
|
len = 0;
|
|
if ((fup = calloc(1, sizeof(*fup) + len)) == NULL)
|
|
errx(1, "calloc failed");
|
|
fhp = &fuhead[type][id & (FUHASH - 1)];
|
|
fup->fu_next = *fhp;
|
|
*fhp = fup;
|
|
fup->fu_id = id;
|
|
if (name)
|
|
bcopy(name, fup->fu_name, len + 1);
|
|
else {
|
|
(void)sprintf(fup->fu_name, "%lu", id);
|
|
if (vflag) {
|
|
if (aflag && fsname != NULL)
|
|
(void)printf("%s: ", fsname);
|
|
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.
|
|
*/
|
|
static ino_t nextino, lastinum, lastvalidinum;
|
|
static long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
|
|
static caddr_t inodebuf;
|
|
#define INOBUFSIZE 56*1024 /* size of buffer to read inodes */
|
|
|
|
union dinode *
|
|
getnextinode(ino_t inumber)
|
|
{
|
|
long size;
|
|
ufs2_daddr_t dblk;
|
|
union dinode *dp;
|
|
static caddr_t nextinop;
|
|
|
|
if (inumber != nextino++ || inumber > lastvalidinum)
|
|
errx(1, "bad inode number %ju to nextinode",
|
|
(uintmax_t)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;
|
|
}
|
|
/*
|
|
* If bread returns an error, it will already have zeroed
|
|
* out the buffer, so we do not need to do so here.
|
|
*/
|
|
bread(dblk, inodebuf, size);
|
|
nextinop = inodebuf;
|
|
}
|
|
dp = (union dinode *)nextinop;
|
|
if (sblock.fs_magic == FS_UFS1_MAGIC)
|
|
nextinop += sizeof(struct ufs1_dinode);
|
|
else
|
|
nextinop += sizeof(struct ufs2_dinode);
|
|
return (dp);
|
|
}
|
|
|
|
/*
|
|
* Prepare to scan a set of inodes.
|
|
*/
|
|
void
|
|
setinodebuf(ino_t inum)
|
|
{
|
|
|
|
if (inum % sblock.fs_ipg != 0)
|
|
errx(1, "bad inode number %ju to setinodebuf", (uintmax_t)inum);
|
|
lastvalidinum = inum + sblock.fs_ipg - 1;
|
|
nextino = inum;
|
|
lastinum = inum;
|
|
readcnt = 0;
|
|
if (inodebuf != NULL)
|
|
return;
|
|
inobufsize = blkroundup(&sblock, INOBUFSIZE);
|
|
fullcnt = inobufsize / ((sblock.fs_magic == FS_UFS1_MAGIC) ?
|
|
sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
|
|
readpercg = sblock.fs_ipg / fullcnt;
|
|
partialcnt = sblock.fs_ipg % fullcnt;
|
|
partialsize = partialcnt * ((sblock.fs_magic == FS_UFS1_MAGIC) ?
|
|
sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
|
|
if (partialcnt != 0) {
|
|
readpercg++;
|
|
} else {
|
|
partialcnt = fullcnt;
|
|
partialsize = inobufsize;
|
|
}
|
|
if ((inodebuf = malloc((unsigned)inobufsize)) == NULL)
|
|
errx(1, "cannot allocate space for inode buffer");
|
|
}
|
|
|
|
/*
|
|
* Free up data structures used to scan inodes.
|
|
*/
|
|
void
|
|
freeinodebuf(void)
|
|
{
|
|
|
|
if (inodebuf != NULL)
|
|
free(inodebuf);
|
|
inodebuf = NULL;
|
|
}
|
|
|
|
/*
|
|
* Read specified disk blocks.
|
|
*/
|
|
void
|
|
bread(ufs2_daddr_t bno, char *buf, long cnt)
|
|
{
|
|
|
|
if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0 ||
|
|
read(fi, buf, cnt) != cnt)
|
|
errx(1, "bread failed on block %ld", (long)bno);
|
|
}
|
|
|
|
/*
|
|
* Display updated block and i-node counts.
|
|
*/
|
|
void
|
|
printchanges(const char *fsname, int type, struct dqblk *dp,
|
|
struct fileusage *fup, u_long id)
|
|
{
|
|
if (!vflag)
|
|
return;
|
|
if (aflag)
|
|
(void)printf("%s: ", fsname);
|
|
if (fup->fu_name[0] == '\0')
|
|
(void)printf("%-8lu fixed ", id);
|
|
else
|
|
(void)printf("%-8s fixed ", fup->fu_name);
|
|
switch (type) {
|
|
|
|
case GRPQUOTA:
|
|
(void)printf("(group):");
|
|
break;
|
|
|
|
case USRQUOTA:
|
|
(void)printf("(user): ");
|
|
break;
|
|
|
|
default:
|
|
(void)printf("(unknown quota type %d)", type);
|
|
break;
|
|
}
|
|
if (dp->dqb_curinodes != fup->fu_curinodes)
|
|
(void)printf("\tinodes %lu -> %lu", (u_long)dp->dqb_curinodes,
|
|
(u_long)fup->fu_curinodes);
|
|
if (dp->dqb_curblocks != fup->fu_curblocks)
|
|
(void)printf("\tblocks %lu -> %lu",
|
|
(u_long)dp->dqb_curblocks,
|
|
(u_long)fup->fu_curblocks);
|
|
(void)printf("\n");
|
|
}
|