source3/modules/vfs_fake_perms.c

   1 /*
   2  * Fake Perms VFS module.  Implements passthrough operation of all VFS
   3  * calls to disk functions, except for file permissions, which are now
   4  * mode 0700 for the current uid/gid.
   5  *
   6  * Copyright (C) Tim Potter, 1999-2000
   7  * Copyright (C) Alexander Bokovoy, 2002
   8  * Copyright (C) Andrew Bartlett, 2002
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #include "includes.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_VFS
  28
  29 static int fake_perms_stat(vfs_handle_struct *handle,
  30                            struct smb_filename *smb_fname)
  31 {
  32         int ret = -1;
  33
  34         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
  35         if (ret == 0) {
  36                 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
  37                         smb_fname->st.st_ex_mode = S_IFDIR | S_IRWXU;
  38                 } else {
  39                         smb_fname->st.st_ex_mode = S_IRWXU;
  40                 }
  41                 smb_fname->st.st_ex_uid = handle->conn->server_info->utok.uid;
  42                 smb_fname->st.st_ex_gid = handle->conn->server_info->utok.gid;
  43         }
  44
  45         return ret;
  46 }
  47
  48 static int fake_perms_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
  49 {
  50         int ret = -1;
  51
  52         ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
  53         if (ret == 0) {
  54                 if (S_ISDIR(sbuf->st_ex_mode)) {
  55                         sbuf->st_ex_mode = S_IFDIR | S_IRWXU;
  56                 } else {
  57                         sbuf->st_ex_mode = S_IRWXU;
  58                 }
  59                 sbuf->st_ex_uid = handle->conn->server_info->utok.uid;
  60                 sbuf->st_ex_gid = handle->conn->server_info->utok.gid;
  61         }
  62         return ret;
  63 }
  64
  65 static struct vfs_fn_pointers vfs_fake_perms_fns = {
  66         .stat = fake_perms_stat,
  67         .fstat = fake_perms_fstat
  68 };
  69
  70 NTSTATUS vfs_fake_perms_init(void);
  71 NTSTATUS vfs_fake_perms_init(void)
  72 {
  73         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "fake_perms",
  74                                 &vfs_fake_perms_fns);
  75 }