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 int aio_pending_size = 100;     /* tevent supports 100 signals SA_SIGINFO */
  28 int outstanding_aio_calls = 0;
  29
  30 #ifdef USE_DMAPI
  31 struct smbd_dmapi_context *dmapi_ctx = NULL;
  32 #endif
  33
  34 /* how many write cache buffers have been allocated */
  35 unsigned int allocated_write_caches = 0;
  36
  37 const struct mangle_fns *mangle_fns = NULL;
  38
  39 unsigned char *chartest = NULL;
  40 TDB_CONTEXT *tdb_mangled_cache = NULL;
  41
  42 /*
  43   this determines how many characters are used from the original filename
  44   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  45   The largest possible value is 6.
  46 */
  47 unsigned mangle_prefix = 0;
  48
  49 bool logged_ioctl_message = false;
  50
  51 time_t last_smb_conf_reload_time = 0;
  52 time_t last_printer_reload_time = 0;
  53 pid_t background_lpq_updater_pid = -1;
  54
  55 /****************************************************************************
  56  structure to hold a linked list of queued messages.
  57  for processing.
  58 ****************************************************************************/
  59 uint32_t common_flags2 = FLAGS2_LONG_PATH_COMPONENTS|FLAGS2_32_BIT_ERROR_CODES|FLAGS2_EXTENDED_ATTRIBUTES;
  60
  61 struct smb_trans_enc_state *partial_srv_trans_enc_ctx = NULL;
  62 struct smb_trans_enc_state *srv_trans_enc_ctx = NULL;
  63
  64 /* A stack of security contexts.  We include the current context as being
  65    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  66 struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  67 int sec_ctx_stack_ndx = 0;
  68 bool become_uid_done = false;
  69 bool become_gid_done = false;
  70
  71 connection_struct *last_conn = NULL;
  72 uint16_t last_flags = 0;
  73
  74 uint32_t global_client_caps = 0;
  75
  76 uint16_t fnf_handle = 257;
  77
  78 /* A stack of current_user connection contexts. */
  79 struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
  80 int conn_ctx_stack_ndx = 0;
  81
  82 struct vfs_init_function_entry *backends = NULL;
  83 char *sparse_buf = NULL;
  84 char *LastDir = NULL;
  85
  86 struct smbd_parent_context *am_parent = NULL;
  87 struct memcache *smbd_memcache_ctx = NULL;
  88 bool exit_firsttime = true;
  89
  90 struct smbXsrv_client *global_smbXsrv_client = NULL;
  91
  92 struct memcache *smbd_memcache(void)
  93 {
  94         if (!smbd_memcache_ctx) {
  95                 /*
  96                  * Note we MUST use the NULL context here, not the
  97                  * autofree context, to avoid side effects in forked
  98                  * children exiting.
  99                  */
 100                 smbd_memcache_ctx = memcache_init(NULL,
 101                                                   lp_max_stat_cache_size()*1024);
 102         }
 103         if (!smbd_memcache_ctx) {
 104                 smb_panic("Could not init smbd memcache");
 105         }
 106
 107         return smbd_memcache_ctx;
 108 }
 109
 110 void smbd_init_globals(void)
 111 {
 112         ZERO_STRUCT(conn_ctx_stack);
 113
 114         ZERO_STRUCT(sec_ctx_stack);
 115 }