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samba-mirror/source3/lib/sysquotas_linux.c
Anoop C S f3798a2b0d lib/sysquota_linux: Handle the quota flags properly 
sys_set_vfs_quota() expects the quota flags i.e, qflags
to be updated in the dp structure for which the routines
sys_get_linux_gen_quota(), sys_get_linux_v2_quota() and
sys_get_linux_v1_quota() failed to do so in their
respective definitions. Th error was uncovered by
compiler warnings [-Wunused-but-set-variable] displayed
for qflags variables in the above mentioned functions
and this patch fixes the same.

Signed-off-by: Anoop C S <achiraya@redhat.com>
Reviewed-by: Jose A. Rivera <jarrpa@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>

Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Sat Jun 20 03:11:19 CEST 2015 on sn-devel-104
2015-06-20 03:11:19 +02:00

557 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 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 "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_t qflags = 0;
struct v1_kern_dqblk D;
uint64_t bsize = (uint64_t)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 = (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_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;
struct v1_kern_dqblk D;
uint64_t bsize = (uint64_t)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;
}
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) {
dp->qflags |= 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) {
dp->qflags |= 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_t qflags = 0;
struct v2_kern_dqblk D;
uint64_t bsize = (uint64_t)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 = (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;
}
/****************************************************************************
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;
struct v2_kern_dqblk D;
uint64_t bsize = (uint64_t)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;
}
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) {
dp->qflags |= 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) {
dp->qflags |= 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_t qflags = 0;
struct if_dqblk D;
uint64_t bsize = (uint64_t)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 = (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;
}
/****************************************************************************
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;
struct if_dqblk D;
uint64_t bsize = (uint64_t)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;
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) {
dp->qflags |= 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) {
dp->qflags |= 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_t 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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