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/globals.h"
  22
  23 #if defined(WITH_AIO)
  24 struct aio_extra *aio_list_head = NULL;
  25 struct tevent_signal *aio_signal_event = NULL;
  26 int aio_pending_size = 0;
  27 int outstanding_aio_calls = 0;
  28 #endif
  29
  30 /* dlink list we store pending lock records on. */
  31 struct blocking_lock_record *blocking_lock_queue = NULL;
  32
  33 /* dlink list we move cancelled lock records onto. */
  34 struct blocking_lock_record *blocking_lock_cancelled_queue = NULL;
  35
  36 /* The event that makes us process our blocking lock queue */
  37 struct timed_event *brl_timeout = NULL;
  38
  39 bool blocking_lock_unlock_state = false;
  40 bool blocking_lock_cancel_state = false;
  41
  42 #ifdef USE_DMAPI
  43 struct smbd_dmapi_context *dmapi_ctx = NULL;
  44 #endif
  45
  46
  47 bool dfree_broken = false;
  48
  49 struct bitmap *dptr_bmap = NULL;
  50 struct dptr_struct *dirptrs = NULL;
  51 int dirhandles_open = 0;
  52
  53 /* how many write cache buffers have been allocated */
  54 unsigned int allocated_write_caches = 0;
  55
  56 int real_max_open_files = 0;
  57 struct bitmap *file_bmap = NULL;
  58 files_struct *Files = NULL;
  59 int files_used = 0;
  60 struct fsp_singleton_cache fsp_fi_cache = {
  61         .fsp = NULL,
  62         .id = {
  63                 .devid = 0,
  64                 .inode = 0,
  65                 .extid = 0
  66         }
  67 };
  68 unsigned long file_gen_counter = 0;
  69 int first_file = 0;
  70
  71 const struct mangle_fns *mangle_fns = NULL;
  72
  73 unsigned char *chartest = NULL;
  74 TDB_CONTEXT *tdb_mangled_cache = NULL;
  75
  76 /* these tables are used to provide fast tests for characters */
  77 unsigned char char_flags[256];
  78 /*
  79   this determines how many characters are used from the original filename
  80   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  81   The largest possible value is 6.
  82 */
  83 unsigned mangle_prefix = 0;
  84 unsigned char base_reverse[256];
  85
  86 char *last_from = NULL;
  87 char *last_to = NULL;
  88
  89 struct msg_state *smbd_msg_state = NULL;
  90
  91 bool logged_ioctl_message = false;
  92
  93 int trans_num = 0;
  94 pid_t mypid = 0;
  95 time_t last_smb_conf_reload_time = 0;
  96 time_t last_printer_reload_time = 0;
  97 /****************************************************************************
  98  structure to hold a linked list of queued messages.
  99  for processing.
 100 ****************************************************************************/
 101 struct pending_message_list *deferred_open_queue = NULL;
 102 uint32_t common_flags2 = FLAGS2_LONG_PATH_COMPONENTS|FLAGS2_32_BIT_ERROR_CODES;
 103
 104 struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx = NULL;
 105 struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx = NULL;
 106
 107 /* A stack of security contexts.  We include the current context as being
 108    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
 109 struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
 110 int sec_ctx_stack_ndx = 0;
 111 bool become_uid_done = false;
 112 bool become_gid_done = false;
 113
 114 connection_struct *last_conn = NULL;
 115 uint16_t last_flags = 0;
 116
 117 struct db_context *session_db_ctx_ptr = NULL;
 118
 119 uint32_t global_client_caps = 0;
 120
 121 uint16_t fnf_handle = 257;
 122
 123 /* A stack of current_user connection contexts. */
 124 struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
 125 int conn_ctx_stack_ndx = 0;
 126
 127 struct vfs_init_function_entry *backends = NULL;
 128 char *sparse_buf = NULL;
 129 char *LastDir = NULL;
 130
 131 /* Current number of oplocks we have outstanding. */
 132 int32_t exclusive_oplocks_open = 0;
 133 int32_t level_II_oplocks_open = 0;
 134 bool global_client_failed_oplock_break = false;
 135 struct kernel_oplocks *koplocks = NULL;
 136
 137 struct notify_mid_map *notify_changes_by_mid = NULL;
 138
 139 int am_parent = 1;
 140 int server_fd = -1;
 141 struct event_context *smbd_event_ctx = NULL;
 142 struct messaging_context *smbd_msg_ctx = NULL;
 143 struct memcache *smbd_memcache_ctx = NULL;
 144 bool exit_firsttime = true;
 145 struct child_pid *children = 0;
 146 int num_children = 0;
 147
 148 struct smbd_server_connection *smbd_server_conn = NULL;
 149
 150 void smbd_init_globals(void)
 151 {
 152         ZERO_STRUCT(char_flags);
 153         ZERO_STRUCT(base_reverse);
 154
 155         ZERO_STRUCT(conn_ctx_stack);
 156
 157         ZERO_STRUCT(sec_ctx_stack);
 158 }