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/*
* Unix SMB/CIFS implementation.
* System QUOTA function wrappers for JFS2 on AIX
* Copyright (C) 2019 Bjoern Jacke
*
* 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.
*
* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_QUOTA
#if defined(HAVE_JFS_QUOTA_H)
#include <jfs/quota.h>
#if defined(Q_J2GETQUOTA) /* when have JFS2 */
/* int quotactl(const char *path, int cmd, int id, char *addr)
*
* This is very similar to sysquotas_4B but JFS2 has different quota cmds
* (why?) and for some reason wants root even for querying your own quota,
* which seems to be an AIX bug because the docs say root is only
* required for querying other users' quota
*/
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_JFS_QUOTA_H
#include <jfs/quota.h>
#endif
static int sys_quotactl_JFS2(const char * path, int cmd,
int id, quota64_t *quota)
{
int ret;
/* NB: We must test GRPQUOTA here, because USRQUOTA is 0. */
DEBUG(10, ("%s quota for %s ID %u on %s\n",
(cmd & QCMD(Q_J2GETQUOTA, 0)) ? "getting" : "setting",
(cmd & QCMD(0, GRPQUOTA)) ? "group" : "user",
(unsigned)id, path));
become_root();
ret = quotactl((char *) path, cmd, id, (char *) quota);
if (ret == -1) {
/* ENOTSUP means quota support is not compiled in. EINVAL
* means that quotas are not configured (commonly).
*/
if (errno != ENOTSUP && errno != EINVAL) {
DEBUG(0, ("failed to %s quota for %s ID %u on %s: %s\n",
(cmd & QCMD(Q_J2GETQUOTA, 0)) ? "get" : "set",
(cmd & QCMD(0, GRPQUOTA)) ? "group" : "user",
(unsigned)id, path, strerror(errno)));
}
}
unbecome_root();
return ret;
}
int sys_get_jfs2_quota(const char *path, const char *bdev,
enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret;
quota64_t quota;
ZERO_STRUCT(quota);
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
/* Get quota for provided UID. */
ret = sys_quotactl_JFS2(path, QCMD(Q_J2GETQUOTA, USRQUOTA),
id.uid, "a);
break;
case SMB_USER_FS_QUOTA_TYPE:
/* Get quota for current UID. */
ret = sys_quotactl_JFS2(path, QCMD(Q_J2GETQUOTA, USRQUOTA),
geteuid(), "a);
break;
case SMB_GROUP_QUOTA_TYPE:
/* Get quota for provided GID. */
ret = sys_quotactl_JFS2(path, QCMD(Q_J2GETQUOTA, GRPQUOTA),
id.gid, "a);
break;
case SMB_GROUP_FS_QUOTA_TYPE:
/* Get quota for current GID. */
ret = sys_quotactl_JFS2(path, QCMD(Q_J2GETQUOTA, GRPQUOTA),
getegid(), "a);
break;
default:
DEBUG(0, ("cannot get unsupported quota type: %u\n",
(unsigned)qtype));
errno = ENOSYS;
return -1;
}
if (ret == -1) {
return -1;
}
dp->softlimit = quota.bsoft;
dp->hardlimit = quota.bhard;
dp->ihardlimit = quota.ihard;
dp->isoftlimit = quota.isoft;
dp->curinodes = quota.iused;
dp->curblocks = quota.bused;
dp->qflags = QUOTAS_ENABLED | QUOTAS_DENY_DISK;
dp->qtype = qtype;
dp->bsize = QUOTABLOCK_SIZE;
return ret;
}
int sys_set_jfs2_quota(const char *path, const char *bdev,
enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
/* JFS2 supports fancy quota limit classes for setting user quota.
* Unfortunately, this makes them quite unmanagable for Samba.
*/
DEBUG(1, ("cannot set quota on JFS2!\n"));
errno = ENOSYS;
return -1;
}
#endif /* JFS2 */
#endif /* AIX quotas */
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