source3/smbd/ntquotas.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NT QUOTA suppport
   4    Copyright (C) Stefan (metze) Metzmacher      2003
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22
  23 static SMB_BIG_UINT limit_nt2unix(SMB_BIG_UINT in, SMB_BIG_UINT bsize)
  24 {
  25         SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
  26
  27         ret =   (SMB_BIG_UINT)(in/bsize);
  28         if (in>0 && ret==0) {
  29                 /* we have to make sure that a overflow didn't set NO_LIMIT */
  30                 ret = (SMB_BIG_UINT)1;
  31         }
  32
  33         if (in == SMB_NTQUOTAS_NO_LIMIT)
  34                 ret = SMB_QUOTAS_NO_LIMIT;
  35         else if (in == SMB_NTQUOTAS_NO_SPACE)
  36                 ret = SMB_QUOTAS_NO_SPACE;
  37         else if (in == SMB_NTQUOTAS_NO_ENTRY)
  38                 ret = SMB_QUOTAS_NO_LIMIT;
  39
  40         return ret;
  41 }
  42
  43 static SMB_BIG_UINT limit_unix2nt(SMB_BIG_UINT in, SMB_BIG_UINT bsize)
  44 {
  45         SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
  46
  47         ret = (SMB_BIG_UINT)(in*bsize);
  48
  49         if (ret < in) {
  50                 /* we overflow */
  51                 ret = SMB_NTQUOTAS_NO_LIMIT;
  52         }
  53
  54         if (in == SMB_QUOTAS_NO_LIMIT)
  55                 ret = SMB_NTQUOTAS_NO_LIMIT;
  56
  57         return ret;
  58 }
  59
  60 static SMB_BIG_UINT limit_blk2inodes(SMB_BIG_UINT in)
  61 {
  62         SMB_BIG_UINT ret = (SMB_BIG_UINT)0;
  63
  64         ret = (SMB_BIG_UINT)(in/2);
  65
  66         if (ret == 0 && in != 0)
  67                 ret = (SMB_BIG_UINT)1;
  68
  69         return ret;
  70 }
  71
  72 int vfs_get_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
  73 {
  74         int ret;
  75         SMB_DISK_QUOTA D;
  76         unid_t id;
  77         enum SID_NAME_USE sid_use = SID_NAME_USE_NONE;
  78
  79         ZERO_STRUCT(D);
  80
  81         if (!fsp||!fsp->conn||!qt)
  82                 return (-1);
  83
  84         ZERO_STRUCT(*qt);
  85
  86         id.uid = -1;
  87
  88         if (psid && !sid_to_uid(psid, &id.uid, &sid_use)) {
  89                 DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
  90                         sid_string_static(psid)));
  91         }
  92
  93         ret = VFS_GET_QUOTA(fsp->conn, qtype, id, &D);
  94
  95         if (psid)
  96                 qt->sid    = *psid;
  97
  98         if (ret!=0) {
  99                 return ret;
 100         }
 101
 102         qt->usedspace = (SMB_BIG_UINT)D.curblocks*D.bsize;
 103         qt->softlim = limit_unix2nt(D.softlimit, D.bsize);
 104         qt->hardlim = limit_unix2nt(D.hardlimit, D.bsize);
 105         qt->qflags = D.qflags;
 106
 107
 108         return 0;
 109 }
 110
 111 int vfs_set_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
 112 {
 113         int ret;
 114         SMB_DISK_QUOTA D;
 115         unid_t id;
 116         enum SID_NAME_USE sid_use = SID_NAME_USE_NONE;
 117         ZERO_STRUCT(D);
 118
 119         if (!fsp||!fsp->conn||!qt)
 120                 return (-1);
 121
 122         id.uid = -1;
 123
 124 #if defined(QUOTABLOCK_SIZE)
 125         D.bsize     = (SMB_BIG_UINT)QUOTABLOCK_SIZE;
 126 #else
 127         D.bsize     = (SMB_BIG_UINT)1024;
 128 #endif
 129         D.softlimit = limit_nt2unix(qt->softlim,D.bsize);
 130         D.hardlimit = limit_nt2unix(qt->hardlim,D.bsize);
 131         D.qflags     = qt->qflags;
 132
 133         D.isoftlimit = limit_blk2inodes(D.softlimit);
 134         D.ihardlimit = limit_blk2inodes(D.hardlimit);
 135
 136         if (psid && !sid_to_uid(psid, &id.uid, &sid_use)) {
 137                 DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
 138                         sid_string_static(psid)));
 139         }
 140
 141         ret = VFS_SET_QUOTA(fsp->conn, qtype, id, &D);
 142
 143         return ret;
 144 }
 145
 146 static BOOL allready_in_quota_list(SMB_NTQUOTA_LIST *qt_list, uid_t uid)
 147 {
 148         SMB_NTQUOTA_LIST *tmp_list = NULL;
 149
 150         if (!qt_list)
 151                 return False;
 152
 153         for (tmp_list=qt_list;tmp_list!=NULL;tmp_list=tmp_list->next) {
 154                 if (tmp_list->uid == uid) {
 155                         return True;
 156                 }
 157         }
 158
 159         return False;
 160 }
 161
 162 int vfs_get_user_ntquota_list(files_struct *fsp, SMB_NTQUOTA_LIST **qt_list)
 163 {
 164         struct passwd *usr;
 165         TALLOC_CTX *mem_ctx = NULL;
 166
 167         if (!fsp||!fsp->conn||!qt_list)
 168                 return (-1);
 169
 170         *qt_list = NULL;
 171
 172         if ((mem_ctx=talloc_init("SMB_USER_QUOTA_LIST"))==NULL) {
 173                 DEBUG(0,("talloc_init() failed\n"));
 174                 return (-1);
 175         }
 176
 177         sys_setpwent();
 178         while ((usr = sys_getpwent()) != NULL) {
 179                 SMB_NTQUOTA_STRUCT tmp_qt;
 180                 SMB_NTQUOTA_LIST *tmp_list_ent;
 181                 DOM_SID sid;
 182
 183                 ZERO_STRUCT(tmp_qt);
 184
 185                 if (allready_in_quota_list((*qt_list),usr->pw_uid)) {
 186                         DEBUG(5,("record for uid[%d] allready in the list\n",usr->pw_uid));
 187                         continue;
 188                 }
 189
 190                 if (uid_to_sid(&sid,usr->pw_uid)==NULL) {
 191                         DEBUG(0,("uid_to_sid failed for %d\n",usr->pw_uid));
 192                         continue;
 193                 }
 194
 195                 if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &tmp_qt)!=0) {
 196                         DEBUG(1,("no quota entry for sid[%s] path[%s]\n",
 197                                 sid_string_static(&sid),fsp->conn->connectpath));
 198                         continue;
 199                 }
 200
 201                 DEBUG(15,("quota entry for id[%s] path[%s]\n",
 202                         sid_string_static(&sid),fsp->conn->connectpath));
 203
 204                 if ((tmp_list_ent=(SMB_NTQUOTA_LIST *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_LIST)))==NULL) {
 205                         DEBUG(0,("talloc_zero() failed\n"));
 206                         *qt_list = NULL;
 207                         talloc_destroy(mem_ctx);
 208                         return (-1);
 209                 }
 210
 211                 if ((tmp_list_ent->quotas=(SMB_NTQUOTA_STRUCT *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_STRUCT)))==NULL) {
 212                         DEBUG(0,("talloc_zero() failed\n"));
 213                         *qt_list = NULL;
 214                         talloc_destroy(mem_ctx);
 215                         return (-1);
 216                 }
 217
 218                 tmp_list_ent->uid = usr->pw_uid;
 219                 memcpy(tmp_list_ent->quotas,&tmp_qt,sizeof(tmp_qt));
 220                 tmp_list_ent->mem_ctx = mem_ctx;
 221
 222                 DLIST_ADD((*qt_list),tmp_list_ent);
 223
 224         }
 225         sys_endpwent();
 226
 227         return 0;
 228 }
 229
 230 void *init_quota_handle(TALLOC_CTX *mem_ctx)
 231 {
 232         SMB_NTQUOTA_HANDLE *qt_handle;
 233
 234         if (!mem_ctx)
 235                 return False;
 236
 237         qt_handle = (SMB_NTQUOTA_HANDLE *)talloc_zero(mem_ctx,sizeof(SMB_NTQUOTA_HANDLE));
 238         if (qt_handle==NULL) {
 239                 DEBUG(0,("talloc_zero() failed\n"));
 240                 return NULL;
 241         }
 242
 243         return (void *)qt_handle;
 244 }
 245
 246 void destroy_quota_handle(void **pqt_handle)
 247 {
 248         SMB_NTQUOTA_HANDLE *qt_handle = NULL;
 249         if (!pqt_handle||!(*pqt_handle))
 250                 return;
 251
 252         qt_handle = (*pqt_handle);
 253
 254
 255         if (qt_handle->quota_list)
 256                 free_ntquota_list(&qt_handle->quota_list);
 257
 258         qt_handle->quota_list = NULL;
 259         qt_handle->tmp_list = NULL;
 260         qt_handle = NULL;
 261
 262         return;
 263 }
 264