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samba-mirror/source3/smbd/ntquotas.c

263 lines
5.8 KiB
C

/*
Unix SMB/CIFS implementation.
NT QUOTA suppport
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"
static SMB_BIG_UINT limit_nt2unix(SMB_BIG_UINT in, SMB_BIG_UINT bsize)
{
SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
ret = (SMB_BIG_UINT)(in/bsize);
if (in>0 && ret==0) {
/* we have to make sure that a overflow didn't set NO_LIMIT */
ret = (SMB_BIG_UINT)1;
}
if (in == SMB_NTQUOTAS_NO_LIMIT)
ret = SMB_QUOTAS_NO_LIMIT;
else if (in == SMB_NTQUOTAS_NO_SPACE)
ret = SMB_QUOTAS_NO_SPACE;
else if (in == SMB_NTQUOTAS_NO_ENTRY)
ret = SMB_QUOTAS_NO_LIMIT;
return ret;
}
static SMB_BIG_UINT limit_unix2nt(SMB_BIG_UINT in, SMB_BIG_UINT bsize)
{
SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
ret = (SMB_BIG_UINT)(in*bsize);
if (ret < in) {
/* we overflow */
ret = SMB_NTQUOTAS_NO_LIMIT;
}
if (in == SMB_QUOTAS_NO_LIMIT)
ret = SMB_NTQUOTAS_NO_LIMIT;
return ret;
}
static SMB_BIG_UINT limit_blk2inodes(SMB_BIG_UINT in)
{
SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
ret = (SMB_BIG_UINT)(in/2);
if (ret == 0 && in != 0)
ret = (SMB_BIG_UINT)1;
return ret;
}
int vfs_get_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
{
int ret;
SMB_DISK_QUOTA D;
unid_t id;
ZERO_STRUCT(D);
if (!fsp||!fsp->conn||!qt)
return (-1);
ZERO_STRUCT(*qt);
id.uid = -1;
if (psid && NT_STATUS_IS_ERR(sid_to_uid(psid, &id.uid))) {
DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
sid_string_static(psid)));
}
ret = SMB_VFS_GET_QUOTA(fsp->conn, qtype, id, &D);
if (psid)
qt->sid = *psid;
if (ret!=0) {
return ret;
}
qt->usedspace = (SMB_BIG_UINT)D.curblocks*D.bsize;
qt->softlim = limit_unix2nt(D.softlimit, D.bsize);
qt->hardlim = limit_unix2nt(D.hardlimit, D.bsize);
qt->qflags = D.qflags;
return 0;
}
int vfs_set_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
{
int ret;
SMB_DISK_QUOTA D;
unid_t id;
ZERO_STRUCT(D);
if (!fsp||!fsp->conn||!qt)
return (-1);
id.uid = -1;
#if defined(QUOTABLOCK_SIZE)
D.bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
#else
D.bsize = (SMB_BIG_UINT)1024;
#endif
D.softlimit = limit_nt2unix(qt->softlim,D.bsize);
D.hardlimit = limit_nt2unix(qt->hardlim,D.bsize);
D.qflags = qt->qflags;
D.isoftlimit = limit_blk2inodes(D.softlimit);
D.ihardlimit = limit_blk2inodes(D.hardlimit);
if (psid && NT_STATUS_IS_ERR(sid_to_uid(psid, &id.uid))) {
DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
sid_string_static(psid)));
}
ret = SMB_VFS_SET_QUOTA(fsp->conn, qtype, id, &D);
return ret;
}
static BOOL allready_in_quota_list(SMB_NTQUOTA_LIST *qt_list, uid_t uid)
{
SMB_NTQUOTA_LIST *tmp_list = NULL;
if (!qt_list)
return False;
for (tmp_list=qt_list;tmp_list!=NULL;tmp_list=tmp_list->next) {
if (tmp_list->uid == uid) {
return True;
}
}
return False;
}
int vfs_get_user_ntquota_list(files_struct *fsp, SMB_NTQUOTA_LIST **qt_list)
{
struct passwd *usr;
TALLOC_CTX *mem_ctx = NULL;
if (!fsp||!fsp->conn||!qt_list)
return (-1);
*qt_list = NULL;
if ((mem_ctx=talloc_init("SMB_USER_QUOTA_LIST"))==NULL) {
DEBUG(0,("talloc_init() failed\n"));
return (-1);
}
sys_setpwent();
while ((usr = sys_getpwent()) != NULL) {
SMB_NTQUOTA_STRUCT tmp_qt;
SMB_NTQUOTA_LIST *tmp_list_ent;
DOM_SID sid;
ZERO_STRUCT(tmp_qt);
if (allready_in_quota_list((*qt_list),usr->pw_uid)) {
DEBUG(5,("record for uid[%d] allready in the list\n",usr->pw_uid));
continue;
}
if (NT_STATUS_IS_ERR(uid_to_sid(&sid, usr->pw_uid))) {
DEBUG(0,("uid_to_sid failed for %d\n",usr->pw_uid));
continue;
}
if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &tmp_qt)!=0) {
DEBUG(1,("no quota entry for sid[%s] path[%s]\n",
sid_string_static(&sid),fsp->conn->connectpath));
continue;
}
DEBUG(15,("quota entry for id[%s] path[%s]\n",
sid_string_static(&sid),fsp->conn->connectpath));
if ((tmp_list_ent=(SMB_NTQUOTA_LIST *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_LIST)))==NULL) {
DEBUG(0,("talloc_zero() failed\n"));
*qt_list = NULL;
talloc_destroy(mem_ctx);
return (-1);
}
if ((tmp_list_ent->quotas=(SMB_NTQUOTA_STRUCT *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_STRUCT)))==NULL) {
DEBUG(0,("talloc_zero() failed\n"));
*qt_list = NULL;
talloc_destroy(mem_ctx);
return (-1);
}
tmp_list_ent->uid = usr->pw_uid;
memcpy(tmp_list_ent->quotas,&tmp_qt,sizeof(tmp_qt));
tmp_list_ent->mem_ctx = mem_ctx;
DLIST_ADD((*qt_list),tmp_list_ent);
}
sys_endpwent();
return 0;
}
void *init_quota_handle(TALLOC_CTX *mem_ctx)
{
SMB_NTQUOTA_HANDLE *qt_handle;
if (!mem_ctx)
return False;
qt_handle = (SMB_NTQUOTA_HANDLE *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_HANDLE));
if (qt_handle==NULL) {
DEBUG(0,("talloc_zero() failed\n"));
return NULL;
}
return (void *)qt_handle;
}
void destroy_quota_handle(void **pqt_handle)
{
SMB_NTQUOTA_HANDLE *qt_handle = NULL;
if (!pqt_handle||!(*pqt_handle))
return;
qt_handle = (*pqt_handle);
if (qt_handle->quota_list)
free_ntquota_list(&qt_handle->quota_list);
qt_handle->quota_list = NULL;
qt_handle->tmp_list = NULL;
qt_handle = NULL;
return;
}