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samba-mirror/source3/lib/sysquotas_linux.c
Stefan Metzmacher d908a897ed r19982: From Michael Adam (ma@sernet.de) (thanks!:-) 
Metze: as noted by "shattered" and discussed on the irc,
  here is a patch to lib/sysquotas_linux.c replacing some
  "get"s by "set"s. The other lib/sysquotas*.c files look
  ok to me. But in the linux variant, the problem is not
  in the actual call of quotactl but in the preparation of
  the respective "D" structs. This makes the difference
  between the get and set calls for SMB_USER_FS_QUOTA_TYPE
  and SMB_GROUP_FS_QUOTA_TYPE.

metze
(This used to be commit d303cc7e62)
2007-10-10 12:16:17 -05:00

570 lines
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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 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
#ifndef HAVE_SYS_QUOTAS
#ifdef HAVE_QUOTACTL_LINUX
#undef HAVE_QUOTACTL_LINUX
#endif
#endif
#ifdef HAVE_QUOTACTL_LINUX
#include "samba_linux_quota.h"
/****************************************************************************
Abstract out the v1 Linux quota get calls.
****************************************************************************/
static int sys_get_linux_v1_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
struct v1_kern_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v1_quota: path[%s] bdev[%s] SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v1_quota: path[%s] bdev[%s] SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v1_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v1_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
dp->bsize = bsize;
dp->softlimit = (SMB_BIG_UINT)D.dqb_bsoftlimit;
dp->hardlimit = (SMB_BIG_UINT)D.dqb_bhardlimit;
dp->ihardlimit = (SMB_BIG_UINT)D.dqb_ihardlimit;
dp->isoftlimit = (SMB_BIG_UINT)D.dqb_isoftlimit;
dp->curinodes = (SMB_BIG_UINT)D.dqb_curinodes;
dp->curblocks = (SMB_BIG_UINT)D.dqb_curblocks;
dp->qflags = qflags;
return ret;
}
/****************************************************************************
Abstract out the v1 Linux quota set calls.
****************************************************************************/
static int sys_set_linux_v1_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
uint32 oldqflags = 0;
struct v1_kern_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
if (bsize == dp->bsize) {
D.dqb_bsoftlimit = dp->softlimit;
D.dqb_bhardlimit = dp->hardlimit;
D.dqb_ihardlimit = dp->ihardlimit;
D.dqb_isoftlimit = dp->isoftlimit;
} else {
D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize;
D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize;
D.dqb_ihardlimit = (dp->ihardlimit*dp->bsize)/bsize;
D.dqb_isoftlimit = (dp->isoftlimit*dp->bsize)/bsize;
}
qflags = dp->qflags;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v1_quota: path[%s] bdev[%s] SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
ret = quotactl(QCMD(Q_V1_SETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D);
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v1_quota: path[%s] bdev[%s] SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
ret = quotactl(QCMD(Q_V1_SETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D);
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v1_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v1_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V1_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
return ret;
}
/****************************************************************************
Abstract out the v2 Linux quota get calls.
****************************************************************************/
static int sys_get_linux_v2_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
struct v2_kern_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v2_quota: path[%s] bdev[%s] SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v2_quota: path[%s] bdev[%s] SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v2_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_v2_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
dp->bsize = bsize;
dp->softlimit = (SMB_BIG_UINT)D.dqb_bsoftlimit;
dp->hardlimit = (SMB_BIG_UINT)D.dqb_bhardlimit;
dp->ihardlimit = (SMB_BIG_UINT)D.dqb_ihardlimit;
dp->isoftlimit = (SMB_BIG_UINT)D.dqb_isoftlimit;
dp->curinodes = (SMB_BIG_UINT)D.dqb_curinodes;
dp->curblocks = (SMB_BIG_UINT)D.dqb_curspace/bsize;
dp->qflags = qflags;
return ret;
}
/****************************************************************************
Abstract out the v2 Linux quota set calls.
****************************************************************************/
static int sys_set_linux_v2_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
uint32 oldqflags = 0;
struct v2_kern_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
if (bsize == dp->bsize) {
D.dqb_bsoftlimit = dp->softlimit;
D.dqb_bhardlimit = dp->hardlimit;
D.dqb_ihardlimit = dp->ihardlimit;
D.dqb_isoftlimit = dp->isoftlimit;
} else {
D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize;
D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize;
D.dqb_ihardlimit = (dp->ihardlimit*dp->bsize)/bsize;
D.dqb_isoftlimit = (dp->isoftlimit*dp->bsize)/bsize;
}
qflags = dp->qflags;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v2_quota: path[%s] bdev[%s] SMB_USER_QUOTA_TYPE uid[%u]\n",
path, bdev, (unsigned)id.uid));
ret = quotactl(QCMD(Q_V2_SETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D);
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v2_quota: path[%s] bdev[%s] SMB_GROUP_QUOTA_TYPE gid[%u]\n",
path, bdev, (unsigned)id.gid));
ret = quotactl(QCMD(Q_V2_SETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D);
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v2_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_v2_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_V2_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
return ret;
}
/****************************************************************************
Abstract out the generic Linux quota get calls.
****************************************************************************/
static int sys_get_linux_gen_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
struct if_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_gen_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))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_GROUP_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_gen_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))&&errno != EDQUOT) {
return ret;
}
break;
case SMB_USER_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_gen_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_get_linux_gen_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
qflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
dp->bsize = bsize;
dp->softlimit = (SMB_BIG_UINT)D.dqb_bsoftlimit;
dp->hardlimit = (SMB_BIG_UINT)D.dqb_bhardlimit;
dp->ihardlimit = (SMB_BIG_UINT)D.dqb_ihardlimit;
dp->isoftlimit = (SMB_BIG_UINT)D.dqb_isoftlimit;
dp->curinodes = (SMB_BIG_UINT)D.dqb_curinodes;
dp->curblocks = (SMB_BIG_UINT)D.dqb_curspace/bsize;
dp->qflags = qflags;
return ret;
}
/****************************************************************************
Abstract out the gen Linux quota set calls.
****************************************************************************/
static int sys_set_linux_gen_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
{
int ret = -1;
uint32 qflags = 0;
uint32 oldqflags = 0;
struct if_dqblk D;
SMB_BIG_UINT bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
ZERO_STRUCT(D);
if (bsize == dp->bsize) {
D.dqb_bsoftlimit = dp->softlimit;
D.dqb_bhardlimit = dp->hardlimit;
D.dqb_ihardlimit = dp->ihardlimit;
D.dqb_isoftlimit = dp->isoftlimit;
} else {
D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize;
D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize;
D.dqb_ihardlimit = (dp->ihardlimit*dp->bsize)/bsize;
D.dqb_isoftlimit = (dp->isoftlimit*dp->bsize)/bsize;
}
D.dqb_valid = QIF_LIMITS;
qflags = dp->qflags;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_gen_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_linux_gen_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_linux_gen_quota: path[%s] bdev[%s] SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
path, bdev, (unsigned)id.uid));
if ((ret = quotactl(QCMD(Q_GETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
DEBUG(10,("sys_set_linux_gen_quota: path[%s] bdev[%s] SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
path, bdev, (unsigned)id.gid));
if ((ret = quotactl(QCMD(Q_GETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D))==0) {
oldqflags |= QUOTAS_DENY_DISK;
}
break;
default:
errno = ENOSYS;
return -1;
}
return ret;
}
/****************************************************************************
Abstract out the 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;
if (!path||!bdev||!dp)
smb_panic("sys_set_vfs_quota: called with NULL pointer");
ZERO_STRUCT(*dp);
dp->qtype = qtype;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
case SMB_GROUP_QUOTA_TYPE:
if ((ret=sys_get_linux_gen_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
if ((ret=sys_get_linux_v2_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
if ((ret=sys_get_linux_v1_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
return ret;
}
}
}
if ((dp->curblocks==0)&&
(dp->softlimit==0)&&
(dp->hardlimit==0)) {
/* the upper layer functions don't want empty quota records...*/
return -1;
}
break;
case SMB_USER_FS_QUOTA_TYPE:
id.uid = getuid();
if ((ret=sys_get_linux_gen_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
if ((ret=sys_get_linux_v2_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
ret=sys_get_linux_v1_quota(path, bdev, qtype, id, dp);
}
}
ret = 0;
break;
case SMB_GROUP_FS_QUOTA_TYPE:
id.gid = getgid();
if ((ret=sys_get_linux_gen_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
if ((ret=sys_get_linux_v2_quota(path, bdev, qtype, id, dp))&&errno != EDQUOT) {
ret=sys_get_linux_v1_quota(path, bdev, qtype, id, dp);
}
}
ret = 0;
break;
default:
errno = ENOSYS;
return -1;
}
return ret;
}
/****************************************************************************
Abstract out the 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;
uint32 oldqflags = 0;
if (!path||!bdev||!dp)
smb_panic("sys_set_vfs_quota: called with NULL pointer");
oldqflags = dp->qflags;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
case SMB_GROUP_QUOTA_TYPE:
if ((ret=sys_set_linux_gen_quota(path, bdev, qtype, id, dp))) {
if ((ret=sys_set_linux_v2_quota(path, bdev, qtype, id, dp))) {
if ((ret=sys_set_linux_v1_quota(path, bdev, qtype, id, dp))) {
return ret;
}
}
}
break;
case SMB_USER_FS_QUOTA_TYPE:
id.uid = getuid();
if ((ret=sys_set_linux_gen_quota(path, bdev, qtype, id, dp))) {
if ((ret=sys_set_linux_v2_quota(path, bdev, qtype, id, dp))) {
ret=sys_set_linux_v1_quota(path, bdev, qtype, id, dp);
}
}
if (oldqflags == dp->qflags) {
ret = 0;
} else {
ret = -1;
}
break;
case SMB_GROUP_FS_QUOTA_TYPE:
id.gid = getgid();
if ((ret=sys_set_linux_gen_quota(path, bdev, qtype, id, dp))) {
if ((ret=sys_set_linux_v2_quota(path, bdev, qtype, id, dp))) {
ret=sys_set_linux_v1_quota(path, bdev, qtype, id, dp);
}
}
if (oldqflags == dp->qflags) {
ret = 0;
} else {
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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