source3/smbd/globals.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    smbd globals
   4    Copyright (C) Stefan Metzmacher 2009
   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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "smbd/smbd.h"
  22 #include "smbd/globals.h"
  23 #include "../lib/util/memcache.h"
  24 #include "messages.h"
  25 #include <tdb.h>
  26
  27 #ifdef USE_DMAPI
  28 struct smbd_dmapi_context *dmapi_ctx = NULL;
  29 #endif
  30
  31 /* how many write cache buffers have been allocated */
  32 unsigned int allocated_write_caches = 0;
  33
  34 const struct mangle_fns *mangle_fns = NULL;
  35
  36 unsigned char *chartest = NULL;
  37 TDB_CONTEXT *tdb_mangled_cache = NULL;
  38
  39 /*
  40   this determines how many characters are used from the original filename
  41   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  42   The largest possible value is 6.
  43 */
  44 unsigned mangle_prefix = 0;
  45
  46 bool logged_ioctl_message = false;
  47
  48 time_t last_smb_conf_reload_time = 0;
  49 pid_t background_lpq_updater_pid = -1;
  50
  51 /****************************************************************************
  52  structure to hold a linked list of queued messages.
  53  for processing.
  54 ****************************************************************************/
  55 uint32_t common_flags2 = FLAGS2_LONG_PATH_COMPONENTS|FLAGS2_32_BIT_ERROR_CODES|FLAGS2_EXTENDED_ATTRIBUTES;
  56
  57 struct smb_trans_enc_state *partial_srv_trans_enc_ctx = NULL;
  58 struct smb_trans_enc_state *srv_trans_enc_ctx = NULL;
  59
  60 /* A stack of security contexts.  We include the current context as being
  61    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  62 struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  63 int sec_ctx_stack_ndx = 0;
  64 bool become_uid_done = false;
  65 bool become_gid_done = false;
  66
  67 connection_struct *last_conn = NULL;
  68 uint16_t last_flags = 0;
  69
  70 uint32_t global_client_caps = 0;
  71
  72 uint16_t fnf_handle = 257;
  73
  74 /* A stack of current_user connection contexts. */
  75 struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
  76 int conn_ctx_stack_ndx = 0;
  77
  78 struct vfs_init_function_entry *backends = NULL;
  79 char *sparse_buf = NULL;
  80 char *LastDir = NULL;
  81
  82 struct smbd_parent_context *am_parent = NULL;
  83 struct memcache *smbd_memcache_ctx = NULL;
  84 bool exit_firsttime = true;
  85
  86 struct smbXsrv_client *global_smbXsrv_client = NULL;
  87
  88 struct memcache *smbd_memcache(void)
  89 {
  90         if (!smbd_memcache_ctx) {
  91                 /*
  92                  * Note we MUST use the NULL context here, not the
  93                  * autofree context, to avoid side effects in forked
  94                  * children exiting.
  95                  */
  96                 smbd_memcache_ctx = memcache_init(NULL,
  97                                                   lp_max_stat_cache_size()*1024);
  98         }
  99         if (!smbd_memcache_ctx) {
 100                 smb_panic("Could not init smbd memcache");
 101         }
 102
 103         return smbd_memcache_ctx;
 104 }
 105
 106 void smbd_init_globals(void)
 107 {
 108         ZERO_STRUCT(conn_ctx_stack);
 109
 110         ZERO_STRUCT(sec_ctx_stack);
 111 }