723 lines
18 KiB
C
723 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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* 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[] = "@(#)edquota.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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/*
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* Disk quota editor.
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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 <sys/file.h>
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#include <sys/wait.h>
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#include <ufs/ufs/quota.h>
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#include <errno.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 <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "pathnames.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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char tmpfil[] = _PATH_TMP;
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struct quotause {
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struct quotause *next;
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long flags;
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struct dqblk dqblk;
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char fsname[MAXPATHLEN + 1];
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char qfname[1]; /* actually longer */
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} *getprivs();
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#define FOUND 0x01
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main(argc, argv)
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register char **argv;
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int argc;
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{
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register struct quotause *qup, *protoprivs, *curprivs;
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extern char *optarg;
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extern int optind;
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register long id, protoid;
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register int quotatype, tmpfd;
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char *protoname, ch;
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int tflag = 0, pflag = 0;
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if (argc < 2)
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usage();
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if (getuid()) {
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fprintf(stderr, "edquota: permission denied\n");
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exit(1);
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}
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quotatype = USRQUOTA;
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while ((ch = getopt(argc, argv, "ugtp:")) != EOF) {
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switch(ch) {
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case 'p':
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protoname = optarg;
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pflag++;
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break;
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case 'g':
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quotatype = GRPQUOTA;
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break;
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case 'u':
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quotatype = USRQUOTA;
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break;
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case 't':
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tflag++;
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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 (pflag) {
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if ((protoid = getentry(protoname, quotatype)) == -1)
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exit(1);
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protoprivs = getprivs(protoid, quotatype);
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for (qup = protoprivs; qup; qup = qup->next) {
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qup->dqblk.dqb_btime = 0;
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qup->dqblk.dqb_itime = 0;
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}
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while (argc-- > 0) {
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if ((id = getentry(*argv++, quotatype)) < 0)
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continue;
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putprivs(id, quotatype, protoprivs);
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}
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exit(0);
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}
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tmpfd = mkstemp(tmpfil);
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fchown(tmpfd, getuid(), getgid());
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if (tflag) {
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protoprivs = getprivs(0, quotatype);
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if (writetimes(protoprivs, tmpfd, quotatype) == 0)
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exit(1);
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if (editit(tmpfil) && readtimes(protoprivs, tmpfd))
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putprivs(0, quotatype, protoprivs);
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freeprivs(protoprivs);
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exit(0);
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}
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for ( ; argc > 0; argc--, argv++) {
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if ((id = getentry(*argv, quotatype)) == -1)
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continue;
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curprivs = getprivs(id, quotatype);
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if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
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continue;
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if (editit(tmpfil) && readprivs(curprivs, tmpfd))
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putprivs(id, quotatype, curprivs);
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freeprivs(curprivs);
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}
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close(tmpfd);
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unlink(tmpfil);
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exit(0);
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}
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usage()
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{
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fprintf(stderr, "%s%s%s%s",
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"Usage: edquota [-u] [-p username] username ...\n",
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"\tedquota -g [-p groupname] groupname ...\n",
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"\tedquota [-u] -t\n", "\tedquota -g -t\n");
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exit(1);
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}
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/*
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* This routine converts a name for a particular quota type to
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* an identifier. This routine must agree with the kernel routine
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* getinoquota as to the interpretation of quota types.
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*/
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getentry(name, quotatype)
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char *name;
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int quotatype;
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{
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struct passwd *pw;
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struct group *gr;
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if (alldigits(name))
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return (atoi(name));
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switch(quotatype) {
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case USRQUOTA:
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if (pw = getpwnam(name))
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return (pw->pw_uid);
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fprintf(stderr, "%s: no such user\n", name);
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break;
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case GRPQUOTA:
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if (gr = getgrnam(name))
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return (gr->gr_gid);
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fprintf(stderr, "%s: no such group\n", name);
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break;
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default:
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fprintf(stderr, "%d: unknown quota type\n", quotatype);
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break;
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}
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sleep(1);
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return (-1);
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}
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/*
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* Collect the requested quota information.
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*/
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struct quotause *
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getprivs(id, quotatype)
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register long id;
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int quotatype;
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{
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register struct fstab *fs;
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register struct quotause *qup, *quptail;
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struct quotause *quphead;
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int qcmd, qupsize, fd;
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char *qfpathname;
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static int warned = 0;
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extern int errno;
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setfsent();
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quphead = (struct quotause *)0;
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qcmd = QCMD(Q_GETQUOTA, quotatype);
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while (fs = getfsent()) {
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if (strcmp(fs->fs_vfstype, "ufs"))
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continue;
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if (!hasquota(fs, quotatype, &qfpathname))
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continue;
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qupsize = sizeof(*qup) + strlen(qfpathname);
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if ((qup = (struct quotause *)malloc(qupsize)) == NULL) {
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fprintf(stderr, "edquota: out of memory\n");
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exit(2);
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}
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if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
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if (errno == EOPNOTSUPP && !warned) {
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warned++;
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fprintf(stderr, "Warning: %s\n",
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"Quotas are not compiled into this kernel");
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sleep(3);
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}
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if ((fd = open(qfpathname, O_RDONLY)) < 0) {
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fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
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if (fd < 0 && errno != ENOENT) {
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perror(qfpathname);
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free(qup);
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continue;
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}
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fprintf(stderr, "Creating quota file %s\n",
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qfpathname);
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sleep(3);
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(void) fchown(fd, getuid(),
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getentry(quotagroup, GRPQUOTA));
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(void) fchmod(fd, 0640);
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}
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lseek(fd, (long)(id * sizeof(struct dqblk)), L_SET);
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switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
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case 0: /* EOF */
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/*
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* Convert implicit 0 quota (EOF)
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* into an explicit one (zero'ed dqblk)
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*/
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bzero((caddr_t)&qup->dqblk,
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sizeof(struct dqblk));
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break;
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case sizeof(struct dqblk): /* OK */
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break;
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default: /* ERROR */
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fprintf(stderr, "edquota: read error in ");
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perror(qfpathname);
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close(fd);
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free(qup);
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continue;
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}
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close(fd);
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}
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strcpy(qup->qfname, qfpathname);
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strcpy(qup->fsname, fs->fs_file);
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if (quphead == NULL)
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quphead = qup;
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else
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quptail->next = qup;
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quptail = qup;
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qup->next = 0;
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}
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endfsent();
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return (quphead);
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}
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/*
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* Store the requested quota information.
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*/
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putprivs(id, quotatype, quplist)
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long id;
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int quotatype;
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struct quotause *quplist;
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{
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register struct quotause *qup;
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int qcmd, fd;
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qcmd = QCMD(Q_SETQUOTA, quotatype);
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for (qup = quplist; qup; qup = qup->next) {
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if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
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continue;
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if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
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perror(qup->qfname);
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} else {
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lseek(fd, (long)id * (long)sizeof (struct dqblk), 0);
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if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
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sizeof (struct dqblk)) {
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fprintf(stderr, "edquota: ");
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perror(qup->qfname);
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}
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close(fd);
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}
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}
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}
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/*
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* Take a list of priviledges and get it edited.
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*/
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editit(tmpfile)
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char *tmpfile;
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{
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long omask;
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int pid, stat;
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extern char *getenv();
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omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
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top:
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if ((pid = fork()) < 0) {
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extern errno;
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if (errno == EPROCLIM) {
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fprintf(stderr, "You have too many processes\n");
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return(0);
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}
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if (errno == EAGAIN) {
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sleep(1);
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goto top;
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}
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perror("fork");
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return (0);
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}
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if (pid == 0) {
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register char *ed;
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sigsetmask(omask);
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setgid(getgid());
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setuid(getuid());
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if ((ed = getenv("EDITOR")) == (char *)0)
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ed = _PATH_VI;
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execlp(ed, ed, tmpfile, 0);
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perror(ed);
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exit(1);
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}
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waitpid(pid, &stat, 0);
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sigsetmask(omask);
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if (!WIFEXITED(stat) || WEXITSTATUS(stat) != 0)
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return (0);
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return (1);
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}
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/*
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* Convert a quotause list to an ASCII file.
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*/
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writeprivs(quplist, outfd, name, quotatype)
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struct quotause *quplist;
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int outfd;
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char *name;
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int quotatype;
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{
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register struct quotause *qup;
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FILE *fd;
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ftruncate(outfd, 0);
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lseek(outfd, 0, L_SET);
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if ((fd = fdopen(dup(outfd), "w")) == NULL) {
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fprintf(stderr, "edquota: ");
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perror(tmpfil);
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exit(1);
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}
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fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
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for (qup = quplist; qup; qup = qup->next) {
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fprintf(fd, "%s: %s %d, limits (soft = %d, hard = %d)\n",
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qup->fsname, "blocks in use:",
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dbtob(qup->dqblk.dqb_curblocks) / 1024,
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dbtob(qup->dqblk.dqb_bsoftlimit) / 1024,
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dbtob(qup->dqblk.dqb_bhardlimit) / 1024);
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fprintf(fd, "%s %d, limits (soft = %d, hard = %d)\n",
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"\tinodes in use:", qup->dqblk.dqb_curinodes,
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qup->dqblk.dqb_isoftlimit, qup->dqblk.dqb_ihardlimit);
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}
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fclose(fd);
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return (1);
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}
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/*
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* Merge changes to an ASCII file into a quotause list.
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*/
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readprivs(quplist, infd)
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struct quotause *quplist;
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int infd;
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{
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register struct quotause *qup;
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FILE *fd;
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int cnt;
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register char *cp;
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struct dqblk dqblk;
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char *fsp, line1[BUFSIZ], line2[BUFSIZ];
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lseek(infd, 0, L_SET);
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fd = fdopen(dup(infd), "r");
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if (fd == NULL) {
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fprintf(stderr, "Can't re-read temp file!!\n");
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return (0);
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}
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/*
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* Discard title line, then read pairs of lines to process.
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*/
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(void) fgets(line1, sizeof (line1), fd);
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while (fgets(line1, sizeof (line1), fd) != NULL &&
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fgets(line2, sizeof (line2), fd) != NULL) {
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if ((fsp = strtok(line1, " \t:")) == NULL) {
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fprintf(stderr, "%s: bad format\n", line1);
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return (0);
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}
|
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if ((cp = strtok((char *)0, "\n")) == NULL) {
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fprintf(stderr, "%s: %s: bad format\n", fsp,
|
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&fsp[strlen(fsp) + 1]);
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return (0);
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}
|
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cnt = sscanf(cp,
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" blocks in use: %d, limits (soft = %d, hard = %d)",
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&dqblk.dqb_curblocks, &dqblk.dqb_bsoftlimit,
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&dqblk.dqb_bhardlimit);
|
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if (cnt != 3) {
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fprintf(stderr, "%s:%s: bad format\n", fsp, cp);
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return (0);
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}
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dqblk.dqb_curblocks = btodb(dqblk.dqb_curblocks * 1024);
|
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dqblk.dqb_bsoftlimit = btodb(dqblk.dqb_bsoftlimit * 1024);
|
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dqblk.dqb_bhardlimit = btodb(dqblk.dqb_bhardlimit * 1024);
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if ((cp = strtok(line2, "\n")) == NULL) {
|
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fprintf(stderr, "%s: %s: bad format\n", fsp, line2);
|
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return (0);
|
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}
|
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cnt = sscanf(cp,
|
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"\tinodes in use: %d, limits (soft = %d, hard = %d)",
|
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&dqblk.dqb_curinodes, &dqblk.dqb_isoftlimit,
|
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&dqblk.dqb_ihardlimit);
|
|
if (cnt != 3) {
|
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fprintf(stderr, "%s: %s: bad format\n", fsp, line2);
|
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return (0);
|
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}
|
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for (qup = quplist; qup; qup = qup->next) {
|
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if (strcmp(fsp, qup->fsname))
|
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continue;
|
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/*
|
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* Cause time limit to be reset when the quota
|
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* is next used if previously had no soft limit
|
|
* or were under it, but now have a soft limit
|
|
* and are over it.
|
|
*/
|
|
if (dqblk.dqb_bsoftlimit &&
|
|
qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
|
|
(qup->dqblk.dqb_bsoftlimit == 0 ||
|
|
qup->dqblk.dqb_curblocks <
|
|
qup->dqblk.dqb_bsoftlimit))
|
|
qup->dqblk.dqb_btime = 0;
|
|
if (dqblk.dqb_isoftlimit &&
|
|
qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
|
|
(qup->dqblk.dqb_isoftlimit == 0 ||
|
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qup->dqblk.dqb_curinodes <
|
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qup->dqblk.dqb_isoftlimit))
|
|
qup->dqblk.dqb_itime = 0;
|
|
qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
|
|
qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
|
|
qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
|
|
qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
|
|
qup->flags |= FOUND;
|
|
if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
|
|
dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
|
|
break;
|
|
fprintf(stderr,
|
|
"%s: cannot change current allocation\n", fsp);
|
|
break;
|
|
}
|
|
}
|
|
fclose(fd);
|
|
/*
|
|
* Disable quotas for any filesystems that have not been found.
|
|
*/
|
|
for (qup = quplist; qup; qup = qup->next) {
|
|
if (qup->flags & FOUND) {
|
|
qup->flags &= ~FOUND;
|
|
continue;
|
|
}
|
|
qup->dqblk.dqb_bsoftlimit = 0;
|
|
qup->dqblk.dqb_bhardlimit = 0;
|
|
qup->dqblk.dqb_isoftlimit = 0;
|
|
qup->dqblk.dqb_ihardlimit = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Convert a quotause list to an ASCII file of grace times.
|
|
*/
|
|
writetimes(quplist, outfd, quotatype)
|
|
struct quotause *quplist;
|
|
int outfd;
|
|
int quotatype;
|
|
{
|
|
register struct quotause *qup;
|
|
char *cvtstoa();
|
|
FILE *fd;
|
|
|
|
ftruncate(outfd, 0);
|
|
lseek(outfd, 0, L_SET);
|
|
if ((fd = fdopen(dup(outfd), "w")) == NULL) {
|
|
fprintf(stderr, "edquota: ");
|
|
perror(tmpfil);
|
|
exit(1);
|
|
}
|
|
fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
|
|
fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
|
|
qfextension[quotatype]);
|
|
for (qup = quplist; qup; qup = qup->next) {
|
|
fprintf(fd, "%s: block grace period: %s, ",
|
|
qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
|
|
fprintf(fd, "file grace period: %s\n",
|
|
cvtstoa(qup->dqblk.dqb_itime));
|
|
}
|
|
fclose(fd);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Merge changes of grace times in an ASCII file into a quotause list.
|
|
*/
|
|
readtimes(quplist, infd)
|
|
struct quotause *quplist;
|
|
int infd;
|
|
{
|
|
register struct quotause *qup;
|
|
FILE *fd;
|
|
int cnt;
|
|
register char *cp;
|
|
time_t itime, btime, iseconds, bseconds;
|
|
char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
|
|
|
|
lseek(infd, 0, L_SET);
|
|
fd = fdopen(dup(infd), "r");
|
|
if (fd == NULL) {
|
|
fprintf(stderr, "Can't re-read temp file!!\n");
|
|
return (0);
|
|
}
|
|
/*
|
|
* Discard two title lines, then read lines to process.
|
|
*/
|
|
(void) fgets(line1, sizeof (line1), fd);
|
|
(void) fgets(line1, sizeof (line1), fd);
|
|
while (fgets(line1, sizeof (line1), fd) != NULL) {
|
|
if ((fsp = strtok(line1, " \t:")) == NULL) {
|
|
fprintf(stderr, "%s: bad format\n", line1);
|
|
return (0);
|
|
}
|
|
if ((cp = strtok((char *)0, "\n")) == NULL) {
|
|
fprintf(stderr, "%s: %s: bad format\n", fsp,
|
|
&fsp[strlen(fsp) + 1]);
|
|
return (0);
|
|
}
|
|
cnt = sscanf(cp,
|
|
" block grace period: %d %s file grace period: %d %s",
|
|
&btime, bunits, &itime, iunits);
|
|
if (cnt != 4) {
|
|
fprintf(stderr, "%s:%s: bad format\n", fsp, cp);
|
|
return (0);
|
|
}
|
|
if (cvtatos(btime, bunits, &bseconds) == 0)
|
|
return (0);
|
|
if (cvtatos(itime, iunits, &iseconds) == 0)
|
|
return (0);
|
|
for (qup = quplist; qup; qup = qup->next) {
|
|
if (strcmp(fsp, qup->fsname))
|
|
continue;
|
|
qup->dqblk.dqb_btime = bseconds;
|
|
qup->dqblk.dqb_itime = iseconds;
|
|
qup->flags |= FOUND;
|
|
break;
|
|
}
|
|
}
|
|
fclose(fd);
|
|
/*
|
|
* reset default grace periods for any filesystems
|
|
* that have not been found.
|
|
*/
|
|
for (qup = quplist; qup; qup = qup->next) {
|
|
if (qup->flags & FOUND) {
|
|
qup->flags &= ~FOUND;
|
|
continue;
|
|
}
|
|
qup->dqblk.dqb_btime = 0;
|
|
qup->dqblk.dqb_itime = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Convert seconds to ASCII times.
|
|
*/
|
|
char *
|
|
cvtstoa(time)
|
|
time_t time;
|
|
{
|
|
static char buf[20];
|
|
|
|
if (time % (24 * 60 * 60) == 0) {
|
|
time /= 24 * 60 * 60;
|
|
sprintf(buf, "%d day%s", time, time == 1 ? "" : "s");
|
|
} else if (time % (60 * 60) == 0) {
|
|
time /= 60 * 60;
|
|
sprintf(buf, "%d hour%s", time, time == 1 ? "" : "s");
|
|
} else if (time % 60 == 0) {
|
|
time /= 60;
|
|
sprintf(buf, "%d minute%s", time, time == 1 ? "" : "s");
|
|
} else
|
|
sprintf(buf, "%d second%s", time, time == 1 ? "" : "s");
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* Convert ASCII input times to seconds.
|
|
*/
|
|
cvtatos(time, units, seconds)
|
|
time_t time;
|
|
char *units;
|
|
time_t *seconds;
|
|
{
|
|
|
|
if (bcmp(units, "second", 6) == 0)
|
|
*seconds = time;
|
|
else if (bcmp(units, "minute", 6) == 0)
|
|
*seconds = time * 60;
|
|
else if (bcmp(units, "hour", 4) == 0)
|
|
*seconds = time * 60 * 60;
|
|
else if (bcmp(units, "day", 3) == 0)
|
|
*seconds = time * 24 * 60 * 60;
|
|
else {
|
|
printf("%s: bad units, specify %s\n", units,
|
|
"days, hours, minutes, or seconds");
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Free a list of quotause structures.
|
|
*/
|
|
freeprivs(quplist)
|
|
struct quotause *quplist;
|
|
{
|
|
register struct quotause *qup, *nextqup;
|
|
|
|
for (qup = quplist; qup; qup = nextqup) {
|
|
nextqup = qup->next;
|
|
free(qup);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check whether a string is completely composed of digits.
|
|
*/
|
|
alldigits(s)
|
|
register char *s;
|
|
{
|
|
register c;
|
|
|
|
c = *s++;
|
|
do {
|
|
if (!isdigit(c))
|
|
return (0);
|
|
} while (c = *s++);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Check to see if a particular quota is to be enabled.
|
|
*/
|
|
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);
|
|
}
|