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/*
Unix SMB/CIFS implementation.
System QUOTA function wrappers for LINUX
Copyright (C) Stefan (metze) Metzmacher 2003
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_QUOTA
#ifndef HAVE_SYS_QUOTAS
#ifdef HAVE_QUOTACTL_LINUX
#undef HAVE_QUOTACTL_LINUX
#endif
#endif
#ifdef HAVE_QUOTACTL_LINUX
#include <sys/quota.h>
/****************************************************************************
Linux quota get calls.
****************************************************************************/
int sys_get_vfs_quota(const char *path, const char *bdev,
enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32_t qflags = 0;
struct dqblk D;
uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE;
if (!path || !bdev || !dp) {
smb_panic("sys_get_vfs_quota: called with NULL pointer");
}
ZERO_STRUCT(*dp);
dp->qtype = qtype;
ZERO_STRUCT(D);
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
"SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
id.uid, (caddr_t)&D))) {
return ret;
}
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
"SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
id.gid, (caddr_t)&D))) {
return ret;
}
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
"SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)geteuid()));
if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
geteuid(), (caddr_t)&D)) == 0) {
qflags |= QUOTAS_DENY_DISK;
}
ret = 0;
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
"SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)getegid()));
if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
getegid(), (caddr_t)&D)) == 0) {
qflags |= QUOTAS_DENY_DISK;
}
ret = 0;
break;
default:
errno = ENOSYS;
return -1;
}
dp->bsize = bsize;
dp->softlimit = (uint64_t)D.dqb_bsoftlimit;
dp->hardlimit = (uint64_t)D.dqb_bhardlimit;
dp->ihardlimit = (uint64_t)D.dqb_ihardlimit;
dp->isoftlimit = (uint64_t)D.dqb_isoftlimit;
dp->curinodes = (uint64_t)D.dqb_curinodes;
dp->curblocks = (uint64_t)D.dqb_curspace/bsize;
dp->qflags = qflags;
return ret;
}
/****************************************************************************
Linux quota set calls.
****************************************************************************/
int sys_set_vfs_quota(const char *path, const char *bdev,
enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
struct dqblk D;
uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE;
bool cur_enf, new_enf;
if (!path || !bdev || !dp) {
smb_panic("sys_set_vfs_quota: called with NULL pointer");
}
ZERO_STRUCT(D);
if (bsize == dp->bsize) {
D.dqb_bsoftlimit = dp->softlimit;
D.dqb_bhardlimit = dp->hardlimit;
} else {
D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize;
D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize;
}
D.dqb_ihardlimit = dp->ihardlimit;
D.dqb_isoftlimit = dp->isoftlimit;
D.dqb_valid = QIF_LIMITS;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
"SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
ret = quotactl(QCMD(Q_SETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D);
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
"SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
ret = quotactl(QCMD(Q_SETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D);
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
"SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)geteuid()));
ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
geteuid(), (caddr_t)&D);
cur_enf = (ret == 0);
new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0);
/* We're not changing quota enforcement, so return
* success
* IFF the wanted state is identical to the current
* state */
if (cur_enf == new_enf) {
ret = 0;
} else {
errno = EPERM;
ret = -1;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
"SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)getegid()));
ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
getegid(), (caddr_t)&D);
cur_enf = (ret == 0);
new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0);
/* We're not changing quota enforcement, so return
* success
* IFF the wanted state is identical to the current
* state */
if (cur_enf == new_enf) {
ret = 0;
} else {
errno = EPERM;
ret = -1;
}
break;
default:
errno = ENOSYS;
return -1;
}
return ret;
}
#else /* HAVE_QUOTACTL_LINUX */
void dummy_sysquotas_linux(void);
void dummy_sysquotas_linux(void){}
#endif /* HAVE_QUOTACTL_LINUX */
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