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/*
* QUOTA An implementation of the diskquota system for the LINUX
* operating system. QUOTA is implemented using the BSD systemcall
* interface as the means of communication with the user level.
* Should work for all filesystems because of integration into the
* VFS layer of the operating system.
* This is based on the Melbourne quota system wich uses both user and
* group quota files.
*
* This part does the rpc-communication with the rquotad.
*
* Version: $Id: rquota_client.c,v 1.13 2010/01/05 16:04:57 jkar8572 Exp $
*
* Author: Marco van Wieringen <mvw@planets.elm.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include "config.h"
#include <rpc/rpc.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include "mntopt.h"
#include "rquota.h"
#include "common.h"
#include "quotaio.h"
#if defined(RPC)
/* Convert network format of quotas to utils one */
static inline void clinet2utildqblk(struct util_dqblk *u, struct rquota *n)
{
time_t now;
/* Copy the quota */
u->dqb_bhardlimit = toqb(((qsize_t)n->rq_bhardlimit) * n->rq_bsize);
u->dqb_bsoftlimit = toqb(((qsize_t)n->rq_bsoftlimit) * n->rq_bsize);
u->dqb_ihardlimit = n->rq_fhardlimit;
u->dqb_isoftlimit = n->rq_fsoftlimit;
u->dqb_curinodes = n->rq_curfiles;
u->dqb_curspace = ((qsize_t)n->rq_curblocks) * n->rq_bsize;
time(&now);
if (n->rq_btimeleft)
u->dqb_btime = n->rq_btimeleft + now;
else
u->dqb_btime = 0;
if (n->rq_ftimeleft)
u->dqb_itime = n->rq_ftimeleft + now;
else
u->dqb_itime = 0;
}
/* Convert utils format of quotas to network one */
static inline void cliutil2netdqblk(struct sq_dqblk *n, struct util_dqblk *u)
{
time_t now;
time(&now);
n->rq_bhardlimit = u->dqb_bhardlimit;
n->rq_bsoftlimit = u->dqb_bsoftlimit;
n->rq_fhardlimit = u->dqb_ihardlimit;
n->rq_fsoftlimit = u->dqb_isoftlimit;
n->rq_curblocks = toqb(u->dqb_curspace);
n->rq_curfiles = u->dqb_curinodes;
if (u->dqb_btime)
n->rq_btimeleft = u->dqb_btime - now;
else
n->rq_btimeleft = 0;
if (u->dqb_itime)
n->rq_ftimeleft = u->dqb_itime - now;
else
n->rq_ftimeleft = 0;
}
/* Write appropriate error message */
int rquota_err(int stat)
{
switch (stat) {
case -1:
return -ECONNREFUSED;
case 0:
return -ENOSYS;
case Q_NOQUOTA:
return -ENOENT;
case Q_OK:
return 0;
case Q_EPERM:
return -EPERM;
default:
return -EINVAL;
}
}
/*
* Collect the requested quota information from a remote host.
*/
int rpc_rquota_get(struct dquot *dquot)
{
CLIENT *clnt;
getquota_rslt *result;
union {
getquota_args arg;
ext_getquota_args ext_arg;
} args;
char *fsname_tmp, *host, *pathname;
struct timeval timeout = { 2, 0 };
/*
* Initialize with NULL.
*/
memset(&dquot->dq_dqb, 0, sizeof(dquot->dq_dqb));
/*
* Convert host:pathname to seperate host and pathname.
*/
fsname_tmp = (char *)smalloc(strlen(dquot->dq_h->qh_quotadev) + 1);
strcpy(fsname_tmp, dquot->dq_h->qh_quotadev);
host = fsname_tmp;
/*
* Strip off pathname on nfs mounted dir. Ignore entries of any
* automounter.
*/
if ((pathname = strchr(fsname_tmp, ':')) == (char *)0 || *(pathname + 1) == '(') {
free(fsname_tmp);
return -ENOENT;
}
*pathname++ = '\0';
/* For NFSv4, we send the filesystem path without initial /. Server prepends proper
* NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */
if ((dquot->dq_h->qh_io_flags & IOFL_NFS_MIXED_PATHS) &&
!strcmp(dquot->dq_h->qh_fstype, MNTTYPE_NFS4)) {
while (*pathname == '/')
pathname++;
}
/*
* First try EXT_RQUOTAPROG (Extended (LINUX) RPC quota program)
*/
args.ext_arg.gqa_pathp = pathname;
args.ext_arg.gqa_id = dquot->dq_id;
args.ext_arg.gqa_type = dquot->dq_h->qh_type;
/*
* Create a RPC client.
*/
if ((clnt = clnt_create(host, RQUOTAPROG, EXT_RQUOTAVERS, "udp")) != NULL) {
/*
* Initialize unix authentication
*/
clnt->cl_auth = authunix_create_default();
/*
* Setup protocol timeout.
*/
clnt_control(clnt, CLSET_TIMEOUT, (caddr_t) & timeout);
/*
* Do RPC call and check result.
*/
result = rquotaproc_getquota_2(&args.ext_arg, clnt);
if (result != NULL && result->status == Q_OK)
clinet2utildqblk(&dquot->dq_dqb, &result->getquota_rslt_u.gqr_rquota);
/*
* Destroy unix authentication and RPC client structure.
*/
auth_destroy(clnt->cl_auth);
clnt_destroy(clnt);
}
else
result = NULL;
if (result == NULL || !result->status) {
if (dquot->dq_h->qh_type == USRQUOTA) {
/*
* Try RQUOTAPROG because server doesn't seem to understand EXT_RQUOTAPROG. (NON-LINUX servers.)
*/
args.arg.gqa_pathp = pathname;
args.arg.gqa_uid = dquot->dq_id;
/*
* Create a RPC client.
*/
if ((clnt = clnt_create(host, RQUOTAPROG, RQUOTAVERS, "udp")) != NULL) {
/*
* Initialize unix authentication
*/
clnt->cl_auth = authunix_create_default();
/*
* Setup protocol timeout.
*/
clnt_control(clnt, CLSET_TIMEOUT, (caddr_t) & timeout);
/*
* Do RPC call and check result.
*/
result = rquotaproc_getquota_1(&args.arg, clnt);
if (result != NULL && result->status == Q_OK)
clinet2utildqblk(&dquot->dq_dqb,
&result->getquota_rslt_u.gqr_rquota);
/*
* Destroy unix authentication and RPC client structure.
*/
auth_destroy(clnt->cl_auth);
clnt_destroy(clnt);
}
}
}
free(fsname_tmp);
return rquota_err(result?result->status:-1);
}
/*
* Set the requested quota information on a remote host.
*/
int rpc_rquota_set(int qcmd, struct dquot *dquot)
{
#if defined(RPC_SETQUOTA)
CLIENT *clnt;
setquota_rslt *result;
union {
setquota_args arg;
ext_setquota_args ext_arg;
} args;
char *fsname_tmp, *host, *pathname;
struct timeval timeout = { 2, 0 };
/*
* Convert host:pathname to seperate host and pathname.
*/
fsname_tmp = (char *)smalloc(strlen(dquot->dq_h->qh_quotadev) + 1);
strcpy(fsname_tmp, dquot->dq_h->qh_quotadev);
host = fsname_tmp;
/*
* Strip off pathname on nfs mounted dir. Ignore entries of any
* automounter.
*/
if ((pathname = strchr(fsname_tmp, ':')) == (char *)0 || *(pathname + 1) == '(')
return -ENOENT;
*pathname++ = '\0';
/* For NFSv4, we send the filesystem path without initial /. Server prepends proper
* NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */
if ((dquot->dq_h->qh_io_flags & IOFL_NFS_MIXED_PATHS) &&
!strcmp(dquot->dq_h->qh_fstype, MNTTYPE_NFS4)) {
while (*pathname == '/')
pathname++;
}
/*
* First try EXT_RQUOTAPROG (Extended (LINUX) RPC quota program)
*/
args.ext_arg.sqa_qcmd = qcmd;
args.ext_arg.sqa_pathp = pathname;
args.ext_arg.sqa_id = dquot->dq_id;
args.ext_arg.sqa_type = dquot->dq_h->qh_type;
cliutil2netdqblk(&args.ext_arg.sqa_dqblk, &dquot->dq_dqb);
if ((clnt = clnt_create(host, RQUOTAPROG, EXT_RQUOTAVERS, "udp")) != NULL) {
/*
* Initialize unix authentication
*/
clnt->cl_auth = authunix_create_default();
/*
* Setup protocol timeout.
*/
clnt_control(clnt, CLSET_TIMEOUT, (caddr_t) & timeout);
/*
* Do RPC call and check result.
*/
result = rquotaproc_setquota_2(&args.ext_arg, clnt);
if (result != NULL && result->status == Q_OK)
clinet2utildqblk(&dquot->dq_dqb, &result->setquota_rslt_u.sqr_rquota);
/*
* Destroy unix authentication and RPC client structure.
*/
auth_destroy(clnt->cl_auth);
clnt_destroy(clnt);
}
else
result = NULL;
if (result == NULL || !result->status) {
if (dquot->dq_h->qh_type == USRQUOTA) {
/*
* Try RQUOTAPROG because server doesn't seem to understand EXT_RQUOTAPROG. (NON-LINUX servers.)
*/
args.arg.sqa_qcmd = qcmd;
args.arg.sqa_pathp = pathname;
args.arg.sqa_id = dquot->dq_id;
cliutil2netdqblk(&args.arg.sqa_dqblk, &dquot->dq_dqb);
/*
* Create a RPC client.
*/
if ((clnt = clnt_create(host, RQUOTAPROG, RQUOTAVERS, "udp")) != NULL) {
/*
* Initialize unix authentication
*/
clnt->cl_auth = authunix_create_default();
/*
* Setup protocol timeout.
*/
clnt_control(clnt, CLSET_TIMEOUT, (caddr_t) & timeout);
/*
* Do RPC call and check result.
*/
result = rquotaproc_setquota_1(&args.arg, clnt);
if (result != NULL && result->status == Q_OK)
clinet2utildqblk(&dquot->dq_dqb,
&result->setquota_rslt_u.sqr_rquota);
/*
* Destroy unix authentication and RPC client structure.
*/
auth_destroy(clnt->cl_auth);
clnt_destroy(clnt);
}
}
}
free(fsname_tmp);
return rquota_err(result?result->status:-1);
#endif
return -1;
}
#endif
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