source3/lib/smbd_shim.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    RPC pipe client
   4
   5    Copyright (C) Gerald (Jerry) Carter          2004.
   6    Copyright (C) Andrew Bartlett                2011.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /* Shim functions required due to the horrible dependency mess
  23    in Samba. */
  24
  25 #include "includes.h"
  26 #include "smbd_shim.h"
  27 #include "smbd/proto.h"
  28
  29 static struct smbd_shim shim;
  30
  31 void set_smbd_shim(const struct smbd_shim *shim_functions)
  32 {
  33         shim = *shim_functions;
  34 }
  35
  36 void cancel_pending_lock_requests_by_fid(files_struct *fsp,
  37                         struct byte_range_lock *br_lck,
  38                         enum file_close_type close_type)
  39 {
  40         if (shim.cancel_pending_lock_requests_by_fid) {
  41
  42                 shim.cancel_pending_lock_requests_by_fid(fsp, br_lck, close_type);
  43         }
  44 }
  45
  46 void send_stat_cache_delete_message(struct messaging_context *msg_ctx,
  47                                     const char *name)
  48 {
  49         if (shim.send_stat_cache_delete_message) {
  50                 shim.send_stat_cache_delete_message(msg_ctx, name);
  51         }
  52 }
  53
  54 NTSTATUS can_delete_directory(struct connection_struct *conn,
  55                                 const char *dirname)
  56 {
  57         if (shim.can_delete_directory) {
  58                 return shim.can_delete_directory(conn, dirname);
  59         }
  60         return NT_STATUS_OK;
  61 }
  62
  63 bool change_to_root_user(void)
  64 {
  65         if (shim.change_to_root_user) {
  66                 return shim.change_to_root_user();
  67         }
  68         return false;
  69 }
  70
  71 /**
  72  * The following two functions need to be called from inside the low-level BRL
  73  * code for oplocks correctness in smbd.  Since other utility binaries also
  74  * link in some of the brl code directly, these dummy functions are necessary
  75  * to avoid needing to link in the oplocks code and its dependencies to all of
  76  * the utility binaries.
  77  */
  78 void contend_level2_oplocks_begin(files_struct *fsp,
  79                                   enum level2_contention_type type)
  80 {
  81         if (shim.contend_level2_oplocks_begin) {
  82                 shim.contend_level2_oplocks_begin(fsp, type);
  83         }
  84         return;
  85 }
  86
  87 void contend_level2_oplocks_end(files_struct *fsp,
  88                                 enum level2_contention_type type)
  89 {
  90         if (shim.contend_level2_oplocks_end) {
  91                 shim.contend_level2_oplocks_end(fsp, type);
  92         }
  93         return;
  94 }
  95
  96 void become_root(void)
  97 {
  98         if (shim.become_root) {
  99                 shim.become_root();
 100         }
 101         return;
 102 }
 103
 104 void unbecome_root(void)
 105 {
 106         if (shim.unbecome_root) {
 107                 shim.unbecome_root();
 108         }
 109         return;
 110 }