316 lines
8.0 KiB
C
316 lines
8.0 KiB
C
/*
|
|
* by Manuel Bouyer (bouyer@ensta.fr)
|
|
*
|
|
* There is no copyright, you can use it as you want.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <ufs/ufs/quota.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpcsvc/rquota.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fstab.h>
|
|
#include <grp.h>
|
|
#include <libutil.h>
|
|
#include <pwd.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <err.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <unistd.h>
|
|
|
|
static void rquota_service_1(struct svc_req *request, SVCXPRT *transp);
|
|
static void rquota_service_2(struct svc_req *request, SVCXPRT *transp);
|
|
static void sendquota(struct svc_req *request, SVCXPRT *transp);
|
|
static void sendquota_extended(struct svc_req *request, SVCXPRT *transp);
|
|
static int getfsquota(int type, long id, char *path, struct dqblk *dqblk);
|
|
|
|
static int from_inetd = 1;
|
|
static int debug = 0;
|
|
|
|
static void
|
|
cleanup(int sig)
|
|
{
|
|
|
|
(void)sig;
|
|
(void)rpcb_unset(RQUOTAPROG, RQUOTAVERS, NULL);
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
SVCXPRT *transp;
|
|
int ok;
|
|
struct sockaddr_storage from;
|
|
socklen_t fromlen;
|
|
int vers;
|
|
int ch;
|
|
|
|
while ((ch = getopt(argc, argv, "d")) != -1) {
|
|
switch (ch) {
|
|
case 'd':
|
|
debug++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
fromlen = sizeof(from);
|
|
if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0)
|
|
from_inetd = 0;
|
|
|
|
if (!from_inetd) {
|
|
if (!debug)
|
|
daemon(0, 0);
|
|
(void)rpcb_unset(RQUOTAPROG, RQUOTAVERS, NULL);
|
|
(void)signal(SIGINT, cleanup);
|
|
(void)signal(SIGTERM, cleanup);
|
|
(void)signal(SIGHUP, cleanup);
|
|
}
|
|
|
|
openlog("rpc.rquotad", LOG_CONS|LOG_PID, LOG_DAEMON);
|
|
|
|
/* create and register the service */
|
|
if (from_inetd) {
|
|
transp = svc_tli_create(0, NULL, NULL, 0, 0);
|
|
if (transp == NULL) {
|
|
syslog(LOG_ERR, "couldn't create udp service.");
|
|
exit(1);
|
|
}
|
|
vers = RQUOTAVERS;
|
|
ok = svc_reg(transp, RQUOTAPROG, RQUOTAVERS,
|
|
rquota_service_1, NULL);
|
|
if (ok) {
|
|
vers = EXT_RQUOTAVERS;
|
|
ok = svc_reg(transp, RQUOTAPROG, EXT_RQUOTAVERS,
|
|
rquota_service_2, NULL);
|
|
}
|
|
} else {
|
|
vers = RQUOTAVERS;
|
|
ok = svc_create(rquota_service_1,
|
|
RQUOTAPROG, RQUOTAVERS, "udp");
|
|
if (ok) {
|
|
vers = EXT_RQUOTAVERS;
|
|
ok = svc_create(rquota_service_2,
|
|
RQUOTAPROG, EXT_RQUOTAVERS, "udp");
|
|
|
|
}
|
|
}
|
|
if (!ok) {
|
|
syslog(LOG_ERR,
|
|
"unable to register (RQUOTAPROG, %s, %s)",
|
|
vers == RQUOTAVERS ? "RQUOTAVERS" : "EXT_RQUOTAVERS",
|
|
from_inetd ? "(inetd)" : "udp");
|
|
exit(1);
|
|
}
|
|
|
|
svc_run();
|
|
syslog(LOG_ERR, "svc_run returned");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
rquota_service_2(struct svc_req *request, SVCXPRT *transp)
|
|
{
|
|
|
|
switch (request->rq_proc) {
|
|
case NULLPROC:
|
|
(void)svc_sendreply(transp, (xdrproc_t)xdr_void, (char *)NULL);
|
|
break;
|
|
case RQUOTAPROC_GETQUOTA:
|
|
case RQUOTAPROC_GETACTIVEQUOTA:
|
|
sendquota_extended(request, transp);
|
|
break;
|
|
default:
|
|
svcerr_noproc(transp);
|
|
break;
|
|
}
|
|
if (from_inetd)
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
rquota_service_1(struct svc_req *request, SVCXPRT *transp)
|
|
{
|
|
|
|
switch (request->rq_proc) {
|
|
case NULLPROC:
|
|
(void)svc_sendreply(transp, (xdrproc_t)xdr_void, (char *)NULL);
|
|
break;
|
|
case RQUOTAPROC_GETQUOTA:
|
|
case RQUOTAPROC_GETACTIVEQUOTA:
|
|
sendquota(request, transp);
|
|
break;
|
|
default:
|
|
svcerr_noproc(transp);
|
|
break;
|
|
}
|
|
if (from_inetd)
|
|
exit(0);
|
|
}
|
|
|
|
/* read quota for the specified id, and send it */
|
|
static void
|
|
sendquota(struct svc_req *request, SVCXPRT *transp)
|
|
{
|
|
struct getquota_args getq_args;
|
|
struct getquota_rslt getq_rslt;
|
|
struct dqblk dqblk;
|
|
struct timeval timev;
|
|
int scale;
|
|
|
|
bzero(&getq_args, sizeof(getq_args));
|
|
if (!svc_getargs(transp, (xdrproc_t)xdr_getquota_args, &getq_args)) {
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
if (request->rq_cred.oa_flavor != AUTH_UNIX) {
|
|
/* bad auth */
|
|
getq_rslt.status = Q_EPERM;
|
|
} else if (!getfsquota(USRQUOTA, getq_args.gqa_uid, getq_args.gqa_pathp, &dqblk)) {
|
|
/* failed, return noquota */
|
|
getq_rslt.status = Q_NOQUOTA;
|
|
} else {
|
|
gettimeofday(&timev, NULL);
|
|
getq_rslt.status = Q_OK;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_active = TRUE;
|
|
scale = 1 << flsll(dqblk.dqb_bhardlimit >> 32);
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize =
|
|
DEV_BSIZE * scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit =
|
|
dqblk.dqb_bhardlimit / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit =
|
|
dqblk.dqb_bsoftlimit / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks =
|
|
dqblk.dqb_curblocks / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit =
|
|
dqblk.dqb_ihardlimit;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit =
|
|
dqblk.dqb_isoftlimit;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles =
|
|
dqblk.dqb_curinodes;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft =
|
|
dqblk.dqb_btime - timev.tv_sec;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft =
|
|
dqblk.dqb_itime - timev.tv_sec;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_getquota_rslt, &getq_rslt))
|
|
svcerr_systemerr(transp);
|
|
if (!svc_freeargs(transp, (xdrproc_t)xdr_getquota_args, &getq_args)) {
|
|
syslog(LOG_ERR, "unable to free arguments");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sendquota_extended(struct svc_req *request, SVCXPRT *transp)
|
|
{
|
|
struct ext_getquota_args getq_args;
|
|
struct getquota_rslt getq_rslt;
|
|
struct dqblk dqblk;
|
|
struct timeval timev;
|
|
int scale;
|
|
|
|
bzero(&getq_args, sizeof(getq_args));
|
|
if (!svc_getargs(transp, (xdrproc_t)xdr_ext_getquota_args, &getq_args)) {
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
if (request->rq_cred.oa_flavor != AUTH_UNIX) {
|
|
/* bad auth */
|
|
getq_rslt.status = Q_EPERM;
|
|
} else if (!getfsquota(getq_args.gqa_type, getq_args.gqa_id, getq_args.gqa_pathp, &dqblk)) {
|
|
/* failed, return noquota */
|
|
getq_rslt.status = Q_NOQUOTA;
|
|
} else {
|
|
gettimeofday(&timev, NULL);
|
|
getq_rslt.status = Q_OK;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_active = TRUE;
|
|
scale = 1 << flsll(dqblk.dqb_bhardlimit >> 32);
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize =
|
|
DEV_BSIZE * scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit =
|
|
dqblk.dqb_bhardlimit / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit =
|
|
dqblk.dqb_bsoftlimit / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks =
|
|
dqblk.dqb_curblocks / scale;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit =
|
|
dqblk.dqb_ihardlimit;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit =
|
|
dqblk.dqb_isoftlimit;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles =
|
|
dqblk.dqb_curinodes;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft =
|
|
dqblk.dqb_btime - timev.tv_sec;
|
|
getq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft =
|
|
dqblk.dqb_itime - timev.tv_sec;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_getquota_rslt, &getq_rslt))
|
|
svcerr_systemerr(transp);
|
|
if (!svc_freeargs(transp, (xdrproc_t)xdr_getquota_args, &getq_args)) {
|
|
syslog(LOG_ERR, "unable to free arguments");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* gets the quotas for id, filesystem path.
|
|
* Return 0 if fail, 1 otherwise
|
|
*/
|
|
static int
|
|
getfsquota(int type, long id, char *path, struct dqblk *dqblk)
|
|
{
|
|
struct quotafile *qf;
|
|
/*
|
|
* Remote quota checking is limited to mounted filesystems.
|
|
* Since UFS and ZFS support the quota system calls, we
|
|
* only need to make an fstab object that has the path, and
|
|
* a blank name for the filesystem type.
|
|
* This allows the quota_open() call to work the way we
|
|
* expect it to.
|
|
*
|
|
* The static char declaration is because compiler warnings
|
|
* don't allow passing a const char * to a char *.
|
|
*/
|
|
int rv;
|
|
static char blank[] = "";
|
|
struct fstab fst;
|
|
|
|
fst.fs_file = path;
|
|
fst.fs_mntops = blank;
|
|
fst.fs_vfstype = blank;
|
|
|
|
if (type != USRQUOTA && type != GRPQUOTA)
|
|
return (0);
|
|
|
|
qf = quota_open(&fst, type, O_RDONLY);
|
|
if (debug)
|
|
warnx("quota_open(<%s, %s>, %d) returned %p",
|
|
fst.fs_file, fst.fs_mntops, type,
|
|
qf);
|
|
if (qf == NULL)
|
|
return (0);
|
|
|
|
rv = quota_read(qf, dqblk, id) == 0;
|
|
quota_close(qf);
|
|
if (debug)
|
|
warnx("getfsquota(%d, %ld, %s, %p) -> %d",
|
|
type, id, path, dqblk, rv);
|
|
return (rv);
|
|
}
|