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/*
* Copyright (c) 1980, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Robert Elz at The University of Melbourne.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Turn quota on/off for a filesystem.
*/
#include <sys/param.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <ufs/ufs/quota.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstab.h>
#include <unistd.h>
char *qfname = QUOTAFILENAME;
char *qfextension[] = INITQFNAMES;
int aflag; /* all file systems */
int gflag; /* operate on group quotas */
int uflag; /* operate on user quotas */
int vflag; /* verbose */
main(int argc, char *argv[])
{
struct fstab *fs;
char *qfnp, *whoami;
long argnum, done = 0;
int i, offmode = 0, errs = 0;
extern int optind;
int ch;
whoami = strrchr(*argv, '/') + 1;
if (whoami == (char *)1)
whoami = *argv;
if (strcmp(whoami, "quotaoff") == 0)
offmode++;
else if (strcmp(whoami, "quotaon") != 0) {
fprintf(stderr, "Name must be quotaon or quotaoff not %s\n",
whoami);
exit(1);
}
while ((ch = getopt(argc, argv, "avug")) != -1) {
switch (ch) {
case 'a':
aflag++;
break;
case 'g':
gflag++;
break;
case 'u':
uflag++;
break;
case 'v':
vflag++;
break;
default:
usage(whoami);
}
}
argc -= optind;
argv += optind;
if (argc <= 0 && !aflag)
usage(whoami);
if (!gflag && !uflag) {
gflag++;
uflag++;
}
setfsent();
while ((fs = getfsent()) != NULL) {
if (strcmp(fs->fs_type, FSTAB_RW))
continue;
if (strcmp(fs->fs_vfstype, "ffs") &&
strcmp(fs->fs_vfstype, "ufs") &&
strcmp(fs->fs_vfstype, "mfs"))
continue;
if (aflag) {
if (gflag && hasquota(fs, GRPQUOTA, &qfnp, 0))
errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
if (uflag && hasquota(fs, USRQUOTA, &qfnp, 0))
errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
continue;
}
if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
(argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
done |= 1 << argnum;
if (gflag) {
hasquota(fs, GRPQUOTA, &qfnp, 1);
errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
}
if (uflag) {
hasquota(fs, USRQUOTA, &qfnp, 1);
errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
}
}
}
endfsent();
for (i = 0; i < argc; i++)
if ((done & (1 << i)) == 0)
fprintf(stderr, "%s not found in fstab\n",
argv[i]);
exit(errs);
}
usage(char *whoami)
{
fprintf(stderr, "usage: %s [-aguv] filesystem ...\n", whoami);
exit(1);
}
int
quotaonoff(struct fstab *fs, int offmode, int type, char *qfpathname)
{
if (strcmp(fs->fs_file, "/") && readonly(fs))
return (1);
if (offmode) {
if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
fprintf(stderr, "quotaoff: ");
perror(fs->fs_file);
return (1);
}
if (vflag)
printf("%s: %s quotas turned off\n", fs->fs_file,
qfextension[type]);
return (0);
}
if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
warn("%s: %s quotas using %s", fs->fs_file,
qfextension[type], qfpathname);
return (1);
}
if (vflag)
printf("%s: %s quotas turned on\n", fs->fs_file,
qfextension[type]);
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);
}
/*
* Check to see if a particular quota is to be enabled.
*/
int
hasquota(struct fstab *fs, int type, char **qfnamep, int force)
{
char *opt;
char *cp;
static char initname, usrname[100], grpname[100];
static char buf[BUFSIZ];
if (!initname) {
snprintf(usrname, sizeof usrname, "%s%s",
qfextension[USRQUOTA], qfname);
snprintf(grpname, sizeof grpname, "%s%s",
qfextension[GRPQUOTA], qfname);
initname = 1;
}
strlcpy(buf, fs->fs_mntops, sizeof buf);
for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
if ((cp = strchr(opt, '=')) != NULL)
*cp++ = '\0';
if (type == USRQUOTA && strcmp(opt, usrname) == 0)
break;
if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
break;
}
if (!force && !opt)
return (0);
if (cp) {
*qfnamep = cp;
return (1);
}
(void) snprintf(buf, sizeof buf, "%s/%s.%s", fs->fs_file,
qfname, qfextension[type]);
*qfnamep = buf;
return (1);
}
/*
* Verify file system is mounted and not readonly.
* MFS is special -- it puts "mfs:" in the kernel's mount table
*/
int
readonly(struct fstab *fs)
{
struct statfs fsbuf;
if (statfs(fs->fs_file, &fsbuf) < 0 ||
strcmp(fsbuf.f_mntonname, fs->fs_file) ||
strcmp(fsbuf.f_mntfromname, fs->fs_spec)) {
if (strcmp(fs->fs_file, "mfs") ||
memcmp(fsbuf.f_mntfromname, "mfs:", sizeof("mfs:")-1))
;
else {
printf("%s: not mounted\n", fs->fs_file);
return (1);
}
}
if (fsbuf.f_flags & MNT_RDONLY) {
printf("%s: mounted read-only\n", fs->fs_file);
return (1);
}
return (0);
}
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