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0da76414fd
We need to migrate all pathname based VFS calls to use a struct to finish modernising the VFS with extra timestamp and flags parameters. Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Richard Sharpe <realrichardsharpe@gmail.com>
237 lines
6.8 KiB
C
237 lines
6.8 KiB
C
/*
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* Store default Quotas in a specified quota record
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*
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* Copyright (C) Stefan (metze) Metzmacher 2003
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This module allows the default quota values,
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* in the windows explorer GUI, to be stored on a samba server.
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* The problem is that linux filesystems only store quotas
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* for users and groups, but no default quotas.
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*
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* Samba returns NO_LIMIT as the default quotas by default
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* and refuses to update them.
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*
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* With this module you can store the default quotas that are reported to
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* a windows client, in the quota record of a user. By default the root user
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* is taken because quota limits for root are typically not enforced.
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*
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* This module takes 2 parametric parameters in smb.conf:
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* (the default prefix for them is 'default_quota',
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* it can be overwrittem when you load the module in
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* the 'vfs objects' parameter like this:
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* vfs objects = default_quota:myprefix)
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*
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* "<myprefix>:uid" parameter takes a integer argument,
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* it specifies the uid of the quota record, that will be taken for
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* storing the default USER-quotas.
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*
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* - default value: '0' (for root user)
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* - e.g.: default_quota:uid = 65534
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*
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* "<myprefix>:uid nolimit" parameter takes a boolean argument,
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* it specifies if we should report the stored default quota values,
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* also for the user record, or if you should just report NO_LIMIT
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* to the windows client for the user specified by the "<prefix>:uid" parameter.
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*
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* - default value: yes (that means to report NO_LIMIT)
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* - e.g.: default_quota:uid nolimit = no
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*
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* "<myprefix>:gid" parameter takes a integer argument,
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* it's just like "<prefix>:uid" but for group quotas.
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* (NOTE: group quotas are not supported from the windows explorer!)
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*
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* - default value: '0' (for root group)
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* - e.g.: default_quota:gid = 65534
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*
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* "<myprefix>:gid nolimit" parameter takes a boolean argument,
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* it's just like "<prefix>:uid nolimit" but for group quotas.
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* (NOTE: group quotas are not supported from the windows explorer!)
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*
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* - default value: yes (that means to report NO_LIMIT)
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* - e.g.: default_quota:uid nolimit = no
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*
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_QUOTA
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#define DEFAULT_QUOTA_NAME "default_quota"
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#define DEFAULT_QUOTA_UID_DEFAULT 0
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#define DEFAULT_QUOTA_UID_NOLIMIT_DEFAULT True
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#define DEFAULT_QUOTA_GID_DEFAULT 0
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#define DEFAULT_QUOTA_GID_NOLIMIT_DEFAULT True
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#define DEFAULT_QUOTA_UID(handle) \
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(uid_t)lp_parm_int(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"uid",DEFAULT_QUOTA_UID_DEFAULT)
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#define DEFAULT_QUOTA_UID_NOLIMIT(handle) \
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lp_parm_bool(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"uid nolimit",DEFAULT_QUOTA_UID_NOLIMIT_DEFAULT)
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#define DEFAULT_QUOTA_GID(handle) \
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(gid_t)lp_parm_int(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"gid",DEFAULT_QUOTA_GID_DEFAULT)
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#define DEFAULT_QUOTA_GID_NOLIMIT(handle) \
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lp_parm_bool(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"gid nolimit",DEFAULT_QUOTA_GID_NOLIMIT_DEFAULT)
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static int default_quota_get_quota(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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enum SMB_QUOTA_TYPE qtype,
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unid_t id,
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SMB_DISK_QUOTA *dq)
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{
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int ret = -1;
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if ((ret = SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
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qtype, id, dq)) != 0) {
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return ret;
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}
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switch (qtype) {
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case SMB_USER_QUOTA_TYPE:
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/* we use id.uid == 0 for default quotas */
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if ((id.uid==DEFAULT_QUOTA_UID(handle)) &&
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DEFAULT_QUOTA_UID_NOLIMIT(handle)) {
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SMB_QUOTAS_SET_NO_LIMIT(dq);
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}
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_QUOTA_TYPE:
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/* we use id.gid == 0 for default quotas */
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if ((id.gid==DEFAULT_QUOTA_GID(handle)) &&
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DEFAULT_QUOTA_GID_NOLIMIT(handle)) {
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SMB_QUOTAS_SET_NO_LIMIT(dq);
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}
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break;
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#endif /* HAVE_GROUP_QUOTA */
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case SMB_USER_FS_QUOTA_TYPE:
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{
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unid_t qid;
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uint32_t qflags = dq->qflags;
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qid.uid = DEFAULT_QUOTA_UID(handle);
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SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
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SMB_USER_QUOTA_TYPE, qid, dq);
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dq->qflags = qflags;
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}
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_FS_QUOTA_TYPE:
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{
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unid_t qid;
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uint32_t qflags = dq->qflags;
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qid.gid = DEFAULT_QUOTA_GID(handle);
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SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
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SMB_GROUP_QUOTA_TYPE,
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qid, dq);
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dq->qflags = qflags;
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}
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break;
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#endif /* HAVE_GROUP_QUOTA */
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default:
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errno = ENOSYS;
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return -1;
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break;
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}
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return ret;
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}
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static int default_quota_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dq)
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{
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int ret = -1;
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switch (qtype) {
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case SMB_USER_QUOTA_TYPE:
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/* we use id.uid == 0 for default quotas */
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if ((id.uid==DEFAULT_QUOTA_UID(handle)) &&
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DEFAULT_QUOTA_UID_NOLIMIT(handle)) {
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return -1;
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}
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_QUOTA_TYPE:
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/* we use id.gid == 0 for default quotas */
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if ((id.gid==DEFAULT_QUOTA_GID(handle)) &&
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DEFAULT_QUOTA_GID_NOLIMIT(handle)) {
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return -1;
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}
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break;
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#endif /* HAVE_GROUP_QUOTA */
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case SMB_USER_FS_QUOTA_TYPE:
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_FS_QUOTA_TYPE:
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break;
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#endif /* HAVE_GROUP_QUOTA */
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default:
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errno = ENOSYS;
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return -1;
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break;
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}
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if ((ret=SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq))!=0) {
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return ret;
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}
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switch (qtype) {
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case SMB_USER_QUOTA_TYPE:
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_QUOTA_TYPE:
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break;
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#endif /* HAVE_GROUP_QUOTA */
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case SMB_USER_FS_QUOTA_TYPE:
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{
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unid_t qid;
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qid.uid = DEFAULT_QUOTA_UID(handle);
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ret = SMB_VFS_NEXT_SET_QUOTA(handle, SMB_USER_QUOTA_TYPE, qid, dq);
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}
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break;
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#ifdef HAVE_GROUP_QUOTA
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case SMB_GROUP_FS_QUOTA_TYPE:
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{
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unid_t qid;
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qid.gid = DEFAULT_QUOTA_GID(handle);
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ret = SMB_VFS_NEXT_SET_QUOTA(handle, SMB_GROUP_QUOTA_TYPE, qid, dq);
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}
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break;
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#endif /* HAVE_GROUP_QUOTA */
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default:
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errno = ENOSYS;
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return -1;
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break;
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}
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return ret;
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}
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static struct vfs_fn_pointers vfs_default_quota_fns = {
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.get_quota_fn = default_quota_get_quota,
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.set_quota_fn = default_quota_set_quota
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};
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NTSTATUS vfs_default_quota_init(TALLOC_CTX *);
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NTSTATUS vfs_default_quota_init(TALLOC_CTX *ctx)
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{
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return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, DEFAULT_QUOTA_NAME,
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&vfs_default_quota_fns);
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}
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