FreeBSD-5.3/usr.bin/quota/quota.c
/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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: src/usr.bin/quota/quota.c,v 1.23 2004/08/07 07:05:38 stefanf Exp $");
#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 <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
const char *qfname = QUOTAFILENAME;
const char *qfextension[] = INITQFNAMES;
struct quotause {
struct quotause *next;
long flags;
struct dqblk dqblk;
char fsname[MAXPATHLEN + 1];
};
#define FOUND 0x01
static const char *timeprt(time_t seconds);
static struct quotause *getprivs(long id, int quotatype);
static void usage(void);
static void showuid(u_long uid);
static void showgid(u_long gid);
static void showusrname(char *name);
static void showgrpname(char *name);
static void showquotas(int type, u_long id, const char *name);
static void heading(int type, u_long id, const char *name, const char *tag);
static int ufshasquota(struct fstab *fs, int type, char **qfnamep);
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 int callaurpc(char *host, int prognum, int versnum, int procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char *out);
static int alldigits(char *s);
int lflag;
int qflag;
int vflag;
int
main(int argc, char *argv[])
{
int ngroups;
gid_t mygid, gidset[NGROUPS];
int i, ch, gflag = 0, uflag = 0;
while ((ch = getopt(argc, argv, "glquv")) != -1) {
switch(ch) {
case 'g':
gflag++;
break;
case 'l':
lflag++;
break;
case 'q':
qflag++;
break;
case 'u':
uflag++;
break;
case 'v':
vflag++;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (!uflag && !gflag)
uflag++;
if (argc == 0) {
if (uflag)
showuid(getuid());
if (gflag) {
mygid = getgid();
ngroups = getgroups(NGROUPS, gidset);
if (ngroups < 0)
err(1, "getgroups");
showgid(mygid);
for (i = 0; i < ngroups; i++)
if (gidset[i] != mygid)
showgid(gidset[i]);
}
return(0);
}
if (uflag && gflag)
usage();
if (uflag) {
for (; argc > 0; argc--, argv++) {
if (alldigits(*argv))
showuid(atoi(*argv));
else
showusrname(*argv);
}
return(0);
}
if (gflag) {
for (; argc > 0; argc--, argv++) {
if (alldigits(*argv))
showgid(atoi(*argv));
else
showgrpname(*argv);
}
}
return(0);
}
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: quota [-glu] [-v | -q]",
" quota [-lu] [-v | -q] user ...",
" quota -g [-l] [-v | -q] group ...");
exit(1);
}
/*
* Print out quotas for a specified user identifier.
*/
static void
showuid(u_long uid)
{
struct passwd *pwd = getpwuid(uid);
const char *name;
if (pwd == NULL)
name = "(no account)";
else
name = pwd->pw_name;
showquotas(USRQUOTA, uid, name);
}
/*
* Print out quotas for a specifed user name.
*/
static void
showusrname(char *name)
{
struct passwd *pwd = getpwnam(name);
if (pwd == NULL) {
warnx("%s: unknown user", name);
return;
}
showquotas(USRQUOTA, pwd->pw_uid, name);
}
/*
* Print out quotas for a specified group identifier.
*/
static void
showgid(u_long gid)
{
struct group *grp = getgrgid(gid);
const char *name;
if (grp == NULL)
name = "(no entry)";
else
name = grp->gr_name;
showquotas(GRPQUOTA, gid, name);
}
/*
* Print out quotas for a specifed group name.
*/
static void
showgrpname(char *name)
{
struct group *grp = getgrnam(name);
if (grp == NULL) {
warnx("%s: unknown group", name);
return;
}
showquotas(GRPQUOTA, grp->gr_gid, name);
}
static void
showquotas(int type, u_long id, const char *name)
{
struct quotause *qup;
struct quotause *quplist;
const char *msgi, *msgb;
const char *nam;
int lines = 0;
static time_t now;
if (now == 0)
time(&now);
quplist = getprivs(id, type);
for (qup = quplist; qup; qup = qup->next) {
if (!vflag &&
qup->dqblk.dqb_isoftlimit == 0 &&
qup->dqblk.dqb_ihardlimit == 0 &&
qup->dqblk.dqb_bsoftlimit == 0 &&
qup->dqblk.dqb_bhardlimit == 0)
continue;
msgi = (char *)0;
if (qup->dqblk.dqb_ihardlimit &&
qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_ihardlimit)
msgi = "File limit reached on";
else if (qup->dqblk.dqb_isoftlimit &&
qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_isoftlimit) {
if (qup->dqblk.dqb_itime > now)
msgi = "In file grace period on";
else
msgi = "Over file quota on";
}
msgb = (char *)0;
if (qup->dqblk.dqb_bhardlimit &&
qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bhardlimit)
msgb = "Block limit reached on";
else if (qup->dqblk.dqb_bsoftlimit &&
qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit) {
if (qup->dqblk.dqb_btime > now)
msgb = "In block grace period on";
else
msgb = "Over block quota on";
}
if (qflag) {
if ((msgi != (char *)0 || msgb != (char *)0) &&
lines++ == 0)
heading(type, id, name, "");
if (msgi != (char *)0)
printf("\t%s %s\n", msgi, qup->fsname);
if (msgb != (char *)0)
printf("\t%s %s\n", msgb, qup->fsname);
continue;
}
if (vflag ||
qup->dqblk.dqb_curblocks ||
qup->dqblk.dqb_curinodes) {
if (lines++ == 0)
heading(type, id, name, "");
nam = qup->fsname;
if (strlen(qup->fsname) > 15) {
printf("%s\n", qup->fsname);
nam = "";
}
printf("%15s%8lu%c%7lu%8lu%8s"
, nam
, (u_long) (dbtob(qup->dqblk.dqb_curblocks)
/ 1024)
, (msgb == (char *)0) ? ' ' : '*'
, (u_long) (dbtob(qup->dqblk.dqb_bsoftlimit)
/ 1024)
, (u_long) (dbtob(qup->dqblk.dqb_bhardlimit)
/ 1024)
, (msgb == (char *)0) ? ""
:timeprt(qup->dqblk.dqb_btime));
printf("%8lu%c%7lu%8lu%8s\n"
, (u_long)qup->dqblk.dqb_curinodes
, (msgi == (char *)0) ? ' ' : '*'
, (u_long)qup->dqblk.dqb_isoftlimit
, (u_long)qup->dqblk.dqb_ihardlimit
, (msgi == (char *)0) ? ""
: timeprt(qup->dqblk.dqb_itime)
);
continue;
}
}
if (!qflag && lines == 0)
heading(type, id, name, "none");
}
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%8s %7s%8s%8s%8s %7s%8s%8s\n"
, "Filesystem"
, "usage"
, "quota"
, "limit"
, "grace"
, "files"
, "quota"
, "limit"
, "grace"
);
}
}
/*
* Calculate the grace period and return a printable string for it.
*/
static const char *
timeprt(time_t seconds)
{
time_t hours, minutes;
static char buf[20];
static time_t now;
if (now == 0)
time(&now);
if (now > seconds)
return ("none");
seconds -= now;
minutes = (seconds + 30) / 60;
hours = (minutes + 30) / 60;
if (hours >= 36) {
sprintf(buf, "%lddays", ((long)hours + 12) / 24);
return (buf);
}
if (minutes >= 60) {
sprintf(buf, "%2ld:%ld", (long)minutes / 60,
(long)minutes % 60);
return (buf);
}
sprintf(buf, "%2ld", (long)minutes);
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;
qup = quphead = (struct quotause *)0;
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");
}
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 to be enabled.
*/
static int
ufshasquota(struct fstab *fs, int type, char **qfnamep)
{
static char initname, usrname[100], grpname[100];
static char buf[BUFSIZ];
char *opt, *cp;
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);
}
static int
getufsquota(struct fstab *fs, struct quotause *qup, long id, int quotatype)
{
char *qfpathname;
int fd, qcmd;
qcmd = QCMD(Q_GETQUOTA, quotatype);
if (!ufshasquota(fs, quotatype, &qfpathname))
return (0);
if (quotactl(fs->fs_file, qcmd, id, (char *)&qup->dqblk) != 0) {
if ((fd = open(qfpathname, O_RDONLY)) < 0) {
warn("%s", qfpathname);
return (0);
}
(void) lseek(fd, (off_t)(id * sizeof(struct dqblk)), L_SET);
switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
case 0: /* EOF */
/*
* Convert implicit 0 quota (EOF)
* into an explicit one (zero'ed dqblk)
*/
bzero((caddr_t)&qup->dqblk, sizeof(struct dqblk));
break;
case sizeof(struct dqblk): /* OK */
break;
default: /* ERROR */
warn("read error: %s", qfpathname);
close(fd);
return (0);
}
close(fd);
}
return (1);
}
static int
getnfsquota(struct statfs *fst, struct quotause *qup, long id, int quotatype)
{
struct getquota_args gq_args;
struct getquota_rslt gq_rslt;
struct dqblk *dqp = &qup->dqblk;
struct timeval tv;
char *cp;
if (fst->f_flags & MNT_LOCAL)
return (0);
/*
* rpc.rquotad does not support group quotas
*/
if (quotatype != USRQUOTA)
return (0);
/*
* must be some form of "hostname:/path"
*/
cp = strchr(fst->f_mntfromname, ':');
if (cp == NULL) {
warnx("cannot find hostname for %s", fst->f_mntfromname);
return (0);
}
*cp = '\0';
if (*(cp+1) != '/') {
*cp = ':';
return (0);
}
/* Avoid attempting the RPC for special amd(8) filesystems. */
if (strncmp(fst->f_mntfromname, "pid", 3) == 0 &&
strchr(fst->f_mntfromname, '@') != NULL) {
*cp = ':';
return (0);
}
gq_args.gqa_pathp = cp + 1;
gq_args.gqa_uid = id;
if (callaurpc(fst->f_mntfromname, RQUOTAPROG, RQUOTAVERS,
RQUOTAPROC_GETQUOTA, (xdrproc_t)xdr_getquota_args, (char *)&gq_args,
(xdrproc_t)xdr_getquota_rslt, (char *)&gq_rslt) != 0) {
*cp = ':';
return (0);
}
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 =
gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit *
(gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE);
dqp->dqb_bsoftlimit =
gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit *
(gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE);
dqp->dqb_curblocks =
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;
*cp = ':';
return (1);
default:
warnx("bad rpc result, host: %s", fst->f_mntfromname);
break;
}
*cp = ':';
return (0);
}
static int
callaurpc(char *host, int prognum, int versnum, int procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
{
struct sockaddr_in server_addr;
enum clnt_stat clnt_stat;
struct hostent *hp;
struct timeval timeout, tottimeout;
CLIENT *client = NULL;
int sock = RPC_ANYSOCK;
if ((hp = gethostbyname(host)) == NULL)
return ((int) RPC_UNKNOWNHOST);
timeout.tv_usec = 0;
timeout.tv_sec = 6;
bcopy(hp->h_addr, &server_addr.sin_addr,
MIN(hp->h_length,(int)sizeof(server_addr.sin_addr)));
server_addr.sin_family = AF_INET;
server_addr.sin_port = 0;
if ((client = clntudp_create(&server_addr, prognum,
versnum, timeout, &sock)) == NULL)
return ((int) rpc_createerr.cf_stat);
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 ((int) clnt_stat);
}
static int
alldigits(char *s)
{
int c;
c = *s++;
do {
if (!isdigit(c))
return (0);
} while ((c = *s++));
return (1);
}