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opnsense-src/usr.bin/quota/quota.c

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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1990, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static const char sccsid[] = "from: @(#)quota.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
/*
* Disk quota reporting program.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpcsvc/rquota.h>
#include <ufs/ufs/quota.h>
#include <ctype.h>
#include <err.h>
#include <fstab.h>
#include <grp.h>
#include <libutil.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
static const char *qfextension[] = INITQFNAMES;
struct quotause {
struct quotause *next;
long flags;
struct dqblk dqblk;
char fsname[MAXPATHLEN + 1];
};
static char *timeprt(int64_t seconds);
static struct quotause *getprivs(long id, int quotatype);
static void usage(void);
static int showuid(u_long uid);
static int showgid(u_long gid);
static int showusrname(char *name);
static int showgrpname(char *name);
static int showquotas(int type, u_long id, const char *name);
static void showrawquotas(int type, u_long id, struct quotause *qup);
static void heading(int type, u_long id, const char *name, const char *tag);
static int getufsquota(struct fstab *fs, struct quotause *qup, long id,
int quotatype);
static int getnfsquota(struct statfs *fst, struct quotause *qup, long id,
int quotatype);
static enum clnt_stat callaurpc(char *host, int prognum, int versnum, int procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char *out);
static int alldigits(char *s);
static int hflag;
static int lflag;
static int rflag;
static int qflag;
static int vflag;
static char *filename = NULL;
int
main(int argc, char *argv[])
{
int ngroups;
gid_t mygid, gidset[NGROUPS];
int i, ch, gflag = 0, uflag = 0, errflag = 0;
while ((ch = getopt(argc, argv, "f:ghlrquv")) != -1) {
switch(ch) {
case 'f':
filename = optarg;
break;
case 'g':
gflag++;
break;
case 'h':
hflag++;
break;
case 'l':
lflag++;
break;
case 'q':
qflag++;
break;
case 'r':
rflag++;
break;
case 'u':
uflag++;
break;
case 'v':
vflag++;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (!uflag && !gflag)
uflag++;
if (argc == 0) {
if (uflag)
errflag += showuid(getuid());
if (gflag) {
mygid = getgid();
ngroups = getgroups(NGROUPS, gidset);
if (ngroups < 0)
err(1, "getgroups");
errflag += showgid(mygid);
for (i = 0; i < ngroups; i++)
if (gidset[i] != mygid)
errflag += showgid(gidset[i]);
}
return(errflag);
}
if (uflag && gflag)
usage();
if (uflag) {
for (; argc > 0; argc--, argv++) {
if (alldigits(*argv))
errflag += showuid(atoi(*argv));
else
errflag += showusrname(*argv);
}
return(errflag);
}
if (gflag) {
for (; argc > 0; argc--, argv++) {
if (alldigits(*argv))
errflag += showgid(atoi(*argv));
else
errflag += showgrpname(*argv);
}
}
return(errflag);
}
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: quota [-ghlu] [-f path] [-v | -q | -r]",
" quota [-hlu] [-f path] [-v | -q | -r] user ...",
" quota -g [-hl] [-f path] [-v | -q | -r] group ...");
exit(1);
}
/*
* Print out quotas for a specified user identifier.
*/
static int
showuid(u_long uid)
{
struct passwd *pwd = getpwuid(uid);
const char *name;
if (pwd == NULL)
name = "(no account)";
else
name = pwd->pw_name;
return(showquotas(USRQUOTA, uid, name));
}
/*
* Print out quotas for a specifed user name.
*/
static int
showusrname(char *name)
{
struct passwd *pwd = getpwnam(name);
if (pwd == NULL) {
warnx("%s: unknown user", name);
return(1);
}
return(showquotas(USRQUOTA, pwd->pw_uid, name));
}
/*
* Print out quotas for a specified group identifier.
*/
static int
showgid(u_long gid)
{
struct group *grp = getgrgid(gid);
const char *name;
if (grp == NULL)
name = "(no entry)";
else
name = grp->gr_name;
return(showquotas(GRPQUOTA, gid, name));
}
/*
* Print out quotas for a specifed group name.
*/
static int
showgrpname(char *name)
{
struct group *grp = getgrnam(name);
if (grp == NULL) {
warnx("%s: unknown group", name);
return(1);
}
return(showquotas(GRPQUOTA, grp->gr_gid, name));
}
static void
prthumanval(int len, u_int64_t bytes)
{
char buf[len + 1];
/*
* Limit the width to 5 bytes as that is what users expect.
*/
humanize_number(buf, MIN(sizeof(buf), 5), bytes, "",
HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
(void)printf(" %*s", len, buf);
}
static int
showquotas(int type, u_long id, const char *name)
{
struct quotause *qup;
struct quotause *quplist;
const char *msgi, *msgb;
const char *nam;
char *bgrace = NULL, *igrace = NULL;
int lines = 0, overquota = 0;
static time_t now;
if (now == 0)
time(&now);
quplist = getprivs(id, type);
for (qup = quplist; qup; qup = qup->next) {
msgi = NULL;
if (qup->dqblk.dqb_ihardlimit &&
qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_ihardlimit) {
overquota++;
msgi = "File limit reached on";
}
else if (qup->dqblk.dqb_isoftlimit &&
qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_isoftlimit) {
overquota++;
if (qup->dqblk.dqb_itime > now)
msgi = "In file grace period on";
else
msgi = "Over file quota on";
}
msgb = NULL;
if (qup->dqblk.dqb_bhardlimit &&
qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bhardlimit) {
overquota++;
msgb = "Block limit reached on";
}
else if (qup->dqblk.dqb_bsoftlimit &&
qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit) {
overquota++;
if (qup->dqblk.dqb_btime > now)
msgb = "In block grace period on";
else
msgb = "Over block quota on";
}
if (rflag) {
showrawquotas(type, id, qup);
continue;
}
if (!vflag &&
qup->dqblk.dqb_isoftlimit == 0 &&
qup->dqblk.dqb_ihardlimit == 0 &&
qup->dqblk.dqb_bsoftlimit == 0 &&
qup->dqblk.dqb_bhardlimit == 0)
continue;
if (qflag) {
if ((msgi != NULL || msgb != NULL) &&
lines++ == 0)
heading(type, id, name, "");
if (msgi != NULL)
printf("\t%s %s\n", msgi, qup->fsname);
if (msgb != NULL)
printf("\t%s %s\n", msgb, qup->fsname);
continue;
}
if (!vflag &&
qup->dqblk.dqb_curblocks == 0 &&
qup->dqblk.dqb_curinodes == 0)
continue;
if (lines++ == 0)
heading(type, id, name, "");
nam = qup->fsname;
if (strlen(qup->fsname) > 15) {
printf("%s\n", qup->fsname);
nam = "";
}
printf("%-15s", nam);
if (hflag) {
prthumanval(7, dbtob(qup->dqblk.dqb_curblocks));
printf("%c", (msgb == NULL) ? ' ' : '*');
prthumanval(7, dbtob(qup->dqblk.dqb_bsoftlimit));
prthumanval(7, dbtob(qup->dqblk.dqb_bhardlimit));
} else {
printf(" %7ju%c %7ju %7ju",
(uintmax_t)dbtob(qup->dqblk.dqb_curblocks)
/ 1024,
(msgb == NULL) ? ' ' : '*',
(uintmax_t)dbtob(qup->dqblk.dqb_bsoftlimit)
/ 1024,
(uintmax_t)dbtob(qup->dqblk.dqb_bhardlimit)
/ 1024);
}
if (msgb != NULL)
bgrace = timeprt(qup->dqblk.dqb_btime);
if (msgi != NULL)
igrace = timeprt(qup->dqblk.dqb_itime);
printf("%8s %6ju%c %6ju %6ju%8s\n"
, (msgb == NULL) ? "" : bgrace
, (uintmax_t)qup->dqblk.dqb_curinodes
, (msgi == NULL) ? ' ' : '*'
, (uintmax_t)qup->dqblk.dqb_isoftlimit
, (uintmax_t)qup->dqblk.dqb_ihardlimit
, (msgi == NULL) ? "" : igrace
);
if (msgb != NULL)
free(bgrace);
if (msgi != NULL)
free(igrace);
}
if (!qflag && !rflag && lines == 0)
heading(type, id, name, "none");
return (overquota);
}
static void
showrawquotas(int type, u_long id, struct quotause *qup)
{
time_t t;
printf("Raw %s quota information for id %lu on %s\n",
type == USRQUOTA ? "user" : "group", id, qup->fsname);
printf("block hard limit: %ju\n",
(uintmax_t)qup->dqblk.dqb_bhardlimit);
printf("block soft limit: %ju\n",
(uintmax_t)qup->dqblk.dqb_bsoftlimit);
printf("current block count: %ju\n",
(uintmax_t)qup->dqblk.dqb_curblocks);
printf("i-node hard limit: %ju\n",
(uintmax_t)qup->dqblk.dqb_ihardlimit);
printf("i-node soft limit: %ju\n",
(uintmax_t)qup->dqblk.dqb_isoftlimit);
printf("current i-node count: %ju\n",
(uintmax_t)qup->dqblk.dqb_curinodes);
printf("block grace time: %jd",
(intmax_t)qup->dqblk.dqb_btime);
if (qup->dqblk.dqb_btime != 0) {
t = qup->dqblk.dqb_btime;
printf(" %s", ctime(&t));
} else {
printf("\n");
}
printf("i-node grace time: %jd", (intmax_t)qup->dqblk.dqb_itime);
if (qup->dqblk.dqb_itime != 0) {
t = qup->dqblk.dqb_itime;
printf(" %s", ctime(&t));
} else {
printf("\n");
}
}
static void
heading(int type, u_long id, const char *name, const char *tag)
{
printf("Disk quotas for %s %s (%cid %lu): %s\n", qfextension[type],
name, *qfextension[type], id, tag);
if (!qflag && tag[0] == '\0') {
printf("%-15s %7s %8s %7s %7s %6s %7s %6s%8s\n"
, "Filesystem"
, "usage"
, "quota"
, "limit"
, "grace"
, "files"
, "quota"
, "limit"
, "grace"
);
}
}
/*
* Calculate the grace period and return a printable string for it.
*/
static char *
timeprt(int64_t seconds)
{
time_t hours, minutes;
char *buf;
static time_t now;
if (now == 0)
time(&now);
if (now > seconds) {
if ((buf = strdup("none")) == NULL)
errx(1, "strdup() failed in timeprt()");
return (buf);
}
seconds -= now;
minutes = (seconds + 30) / 60;
hours = (minutes + 30) / 60;
if (hours >= 36) {
if (asprintf(&buf, "%lddays", ((long)hours + 12) / 24) < 0)
errx(1, "asprintf() failed in timeprt(1)");
return (buf);
}
if (minutes >= 60) {
if (asprintf(&buf, "%2ld:%ld", (long)minutes / 60,
(long)minutes % 60) < 0)
errx(1, "asprintf() failed in timeprt(2)");
return (buf);
}
if (asprintf(&buf, "%2ld", (long)minutes) < 0)
errx(1, "asprintf() failed in timeprt(3)");
return (buf);
}
/*
* Collect the requested quota information.
*/
static struct quotause *
getprivs(long id, int quotatype)
{
struct quotause *qup, *quptail = NULL;
struct fstab *fs;
struct quotause *quphead;
struct statfs *fst;
int nfst, i;
struct statfs sfb;
qup = quphead = (struct quotause *)0;
if (filename != NULL && statfs(filename, &sfb) != 0)
err(1, "cannot statfs %s", filename);
nfst = getmntinfo(&fst, MNT_NOWAIT);
if (nfst == 0)
errx(2, "no filesystems mounted!");
setfsent();
for (i = 0; i < nfst; i++) {
if (qup == NULL) {
if ((qup = (struct quotause *)malloc(sizeof *qup))
== NULL)
errx(2, "out of memory");
}
/*
* See if the user requested a specific file system
* or specified a file inside a mounted file system.
*/
if (filename != NULL &&
strcmp(sfb.f_mntonname, fst[i].f_mntonname) != 0)
continue;
if (strcmp(fst[i].f_fstypename, "nfs") == 0) {
if (lflag)
continue;
if (getnfsquota(&fst[i], qup, id, quotatype) == 0)
continue;
} else if (strcmp(fst[i].f_fstypename, "ufs") == 0) {
/*
* XXX
* UFS filesystems must be in /etc/fstab, and must
* indicate that they have quotas on (?!) This is quite
* unlike SunOS where quotas can be enabled/disabled
* on a filesystem independent of /etc/fstab, and it
* will still print quotas for them.
*/
if ((fs = getfsspec(fst[i].f_mntfromname)) == NULL)
continue;
if (getufsquota(fs, qup, id, quotatype) == 0)
continue;
} else
continue;
strcpy(qup->fsname, fst[i].f_mntonname);
if (quphead == NULL)
quphead = qup;
else
quptail->next = qup;
quptail = qup;
quptail->next = 0;
qup = NULL;
}
if (qup)
free(qup);
endfsent();
return (quphead);
}
/*
* Check to see if a particular quota is available.
*/
static int
getufsquota(struct fstab *fs, struct quotause *qup, long id, int quotatype)
{
struct quotafile *qf;
if ((qf = quota_open(fs, quotatype, O_RDONLY)) == NULL)
return (0);
if (quota_read(qf, &qup->dqblk, id) != 0)
return (0);
quota_close(qf);
return (1);
}
static int
getnfsquota(struct statfs *fst, struct quotause *qup, long id, int quotatype)
{
struct ext_getquota_args gq_args;
struct getquota_args old_gq_args;
struct getquota_rslt gq_rslt;
struct dqblk *dqp = &qup->dqblk;
struct timeval tv;
char *cp, host[NI_MAXHOST];
enum clnt_stat call_stat;
if (fst->f_flags & MNT_LOCAL)
return (0);
/*
* must be some form of "hostname:/path"
*/
cp = fst->f_mntfromname;
do {
cp = strrchr(cp, ':');
} while (cp != NULL && *(cp + 1) != '/');
if (cp == NULL) {
warnx("cannot find hostname for %s", fst->f_mntfromname);
return (0);
}
memset(host, 0, sizeof(host));
memcpy(host, fst->f_mntfromname, cp - fst->f_mntfromname);
host[sizeof(host) - 1] = '\0';
/* Avoid attempting the RPC for special amd(8) filesystems. */
if (strncmp(fst->f_mntfromname, "pid", 3) == 0 &&
strchr(fst->f_mntfromname, '@') != NULL)
return (0);
gq_args.gqa_pathp = cp + 1;
gq_args.gqa_id = id;
gq_args.gqa_type = quotatype;
call_stat = callaurpc(host, RQUOTAPROG, EXT_RQUOTAVERS,
RQUOTAPROC_GETQUOTA, (xdrproc_t)xdr_ext_getquota_args, (char *)&gq_args,
(xdrproc_t)xdr_getquota_rslt, (char *)&gq_rslt);
if (call_stat == RPC_PROGVERSMISMATCH || call_stat == RPC_PROGNOTREGISTERED) {
if (quotatype == USRQUOTA) {
old_gq_args.gqa_pathp = cp + 1;
old_gq_args.gqa_uid = id;
call_stat = callaurpc(host, RQUOTAPROG, RQUOTAVERS,
RQUOTAPROC_GETQUOTA, (xdrproc_t)xdr_getquota_args, (char *)&old_gq_args,
(xdrproc_t)xdr_getquota_rslt, (char *)&gq_rslt);
} else {
/* Old rpc quota does not support group type */
return (0);
}
}
if (call_stat != 0)
return (call_stat);
switch (gq_rslt.status) {
case Q_NOQUOTA:
break;
case Q_EPERM:
warnx("quota permission error, host: %s",
fst->f_mntfromname);
break;
case Q_OK:
gettimeofday(&tv, NULL);
/* blocks*/
dqp->dqb_bhardlimit =
((uint64_t)gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit *
gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize) / DEV_BSIZE;
dqp->dqb_bsoftlimit =
((uint64_t)gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit *
gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize) / DEV_BSIZE;
dqp->dqb_curblocks =
((uint64_t)gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks *
gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize) / DEV_BSIZE;
/* inodes */
dqp->dqb_ihardlimit =
gq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit;
dqp->dqb_isoftlimit =
gq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit;
dqp->dqb_curinodes =
gq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles;
/* grace times */
dqp->dqb_btime =
tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft;
dqp->dqb_itime =
tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft;
return (1);
default:
warnx("bad rpc result, host: %s", fst->f_mntfromname);
break;
}
return (0);
}
static enum clnt_stat
callaurpc(char *host, int prognum, int versnum, int procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
{
enum clnt_stat clnt_stat;
struct timeval timeout, tottimeout;
CLIENT *client = NULL;
client = clnt_create(host, prognum, versnum, "udp");
if (client == NULL)
return ((int)rpc_createerr.cf_stat);
timeout.tv_usec = 0;
timeout.tv_sec = 6;
CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&timeout);
client->cl_auth = authunix_create_default();
tottimeout.tv_sec = 25;
tottimeout.tv_usec = 0;
clnt_stat = clnt_call(client, procnum, inproc, in,
outproc, out, tottimeout);
return (clnt_stat);
}
static int
alldigits(char *s)
{
int c;
c = *s++;
do {
if (!isdigit(c))
return (0);
} while ((c = *s++));
return (1);
}
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