diff options
Diffstat (limited to 'source3/smbd/ntquotas.c')
| -rw-r--r-- | source3/smbd/ntquotas.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/source3/smbd/ntquotas.c b/source3/smbd/ntquotas.c new file mode 100644 index 0000000000..c616c494dc --- /dev/null +++ b/source3/smbd/ntquotas.c @@ -0,0 +1,247 @@ +/* + 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 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 + +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 && !sid_to_uid(psid, &id.uid)) { + DEBUG(0,("sid_to_uid: failed, SID[%s]\n", + sid_string_dbg(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; + + D.bsize = (SMB_BIG_UINT)QUOTABLOCK_SIZE; + + 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 && !sid_to_uid(psid, &id.uid)) { + DEBUG(0,("sid_to_uid: failed, SID[%s]\n", + sid_string_dbg(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[%ld] allready in the list\n",(long)usr->pw_uid)); + continue; + } + + uid_to_sid(&sid, usr->pw_uid); + + if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &tmp_qt)!=0) { + DEBUG(5,("no quota entry for sid[%s] path[%s]\n", + sid_string_dbg(&sid), + fsp->conn->connectpath)); + continue; + } + + DEBUG(15,("quota entry for id[%s] path[%s]\n", + sid_string_dbg(&sid), fsp->conn->connectpath)); + + if ((tmp_list_ent=TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_LIST))==NULL) { + DEBUG(0,("TALLOC_ZERO() failed\n")); + *qt_list = NULL; + talloc_destroy(mem_ctx); + return (-1); + } + + if ((tmp_list_ent->quotas=TALLOC_ZERO_P(mem_ctx,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; +} + +static int quota_handle_destructor(SMB_NTQUOTA_HANDLE *handle) +{ + if (handle->quota_list) + free_ntquota_list(&handle->quota_list); + return 0; +} + +void *init_quota_handle(TALLOC_CTX *mem_ctx) +{ + SMB_NTQUOTA_HANDLE *qt_handle; + + if (!mem_ctx) + return False; + + qt_handle = TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_HANDLE); + if (qt_handle==NULL) { + DEBUG(0,("TALLOC_ZERO() failed\n")); + return NULL; + } + + talloc_set_destructor(qt_handle, quota_handle_destructor); + return (void *)qt_handle; +} |