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 connection_struct *Connections = NULL;
  47 /* number of open connections */
  48 struct bitmap *bmap = 0;
  49 int num_open = 0;
  50
  51
  52 bool dfree_broken = false;
  53
  54 struct bitmap *dptr_bmap = NULL;
  55 struct dptr_struct *dirptrs = NULL;
  56 int dirhandles_open = 0;
  57
  58 /* how many write cache buffers have been allocated */
  59 unsigned int allocated_write_caches = 0;
  60
  61 int real_max_open_files = 0;
  62 struct bitmap *file_bmap = NULL;
  63 files_struct *Files = NULL;
  64 int files_used = 0;
  65 struct fsp_singleton_cache fsp_fi_cache = {
  66         .fsp = NULL,
  67         .id = {
  68                 .devid = 0,
  69                 .inode = 0
  70         }
  71 };
  72 unsigned long file_gen_counter = 0;
  73 int first_file = 0;
  74
  75 const struct mangle_fns *mangle_fns = NULL;
  76
  77 unsigned char *chartest = NULL;
  78 TDB_CONTEXT *tdb_mangled_cache = NULL;
  79
  80 /* these tables are used to provide fast tests for characters */
  81 unsigned char char_flags[256];
  82 /*
  83   this determines how many characters are used from the original filename
  84   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  85   The largest possible value is 6.
  86 */
  87 unsigned mangle_prefix = 0;
  88 unsigned char base_reverse[256];
  89
  90 char *last_from = NULL;
  91 char *last_to = NULL;
  92
  93 struct msg_state *smbd_msg_state = NULL;
  94
  95 bool global_encrypted_passwords_negotiated = false;
  96 bool global_spnego_negotiated = false;
  97 struct auth_context *negprot_global_auth_context = NULL;
  98 bool done_negprot = false;
  99
 100 bool logged_ioctl_message = false;
 101
 102 /* users from session setup */
 103 char *session_userlist = NULL;
 104 /* workgroup from session setup. */
 105 char *session_workgroup = NULL;
 106 /* this holds info on user ids that are already validated for this VC */
 107 user_struct *validated_users = NULL;
 108 uint16_t next_vuid = VUID_OFFSET;
 109 int num_validated_vuids = 0;
 110 #ifdef HAVE_NETGROUP
 111 char *my_yp_domain = NULL;
 112 #endif
 113
 114 bool already_got_session = false;
 115
 116 /*
 117  * Size of data we can send to client. Set
 118  *  by the client for all protocols above CORE.
 119  *  Set by us for CORE protocol.
 120  */
 121 int max_send = BUFFER_SIZE;
 122 /*
 123  * Size of the data we can receive. Set by us.
 124  * Can be modified by the max xmit parameter.
 125  */
 126 int max_recv = BUFFER_SIZE;
 127 uint16 last_session_tag = UID_FIELD_INVALID;
 128 int trans_num = 0;
 129 char *orig_inbuf = NULL;
 130 pid_t mypid = 0;
 131 time_t last_smb_conf_reload_time = 0;
 132 time_t last_printer_reload_time = 0;
 133 /****************************************************************************
 134  structure to hold a linked list of queued messages.
 135  for processing.
 136 ****************************************************************************/
 137 struct pending_message_list *deferred_open_queue = NULL;
 138 uint32_t common_flags2 = FLAGS2_LONG_PATH_COMPONENTS|FLAGS2_32_BIT_ERROR_CODES;
 139
 140 struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx = NULL;
 141 struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx = NULL;
 142
 143 /* A stack of security contexts.  We include the current context as being
 144    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
 145 struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
 146 int sec_ctx_stack_ndx = 0;
 147 bool become_uid_done = false;
 148 bool become_gid_done = false;
 149
 150 connection_struct *last_conn = NULL;
 151 uint16_t last_flags = 0;
 152
 153 struct db_context *session_db_ctx_ptr = NULL;
 154
 155 uint32_t global_client_caps = 0;
 156 bool done_sesssetup = false;
 157 /****************************************************************************
 158  List to store partial SPNEGO auth fragments.
 159 ****************************************************************************/
 160 struct pending_auth_data *pd_list = NULL;
 161
 162 uint16_t fnf_handle = 257;
 163
 164 /* A stack of current_user connection contexts. */
 165 struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
 166 int conn_ctx_stack_ndx = 0;
 167
 168 struct vfs_init_function_entry *backends = NULL;
 169 char *sparse_buf = NULL;
 170 char *LastDir = NULL;
 171
 172 /* Current number of oplocks we have outstanding. */
 173 int32_t exclusive_oplocks_open = 0;
 174 int32_t level_II_oplocks_open = 0;
 175 bool global_client_failed_oplock_break = false;
 176 struct kernel_oplocks *koplocks = NULL;
 177
 178 struct notify_mid_map *notify_changes_by_mid = NULL;
 179
 180 int am_parent = 1;
 181 int server_fd = -1;
 182 struct event_context *smbd_event_ctx = NULL;
 183 struct messaging_context *smbd_msg_ctx = NULL;
 184 struct memcache *smbd_memcache_ctx = NULL;
 185 bool exit_firsttime = true;
 186 struct child_pid *children = 0;
 187 int num_children = 0;
 188
 189 struct smbd_server_connection *smbd_server_conn = NULL;
 190
 191 void smbd_init_globals(void)
 192 {
 193         ZERO_STRUCT(char_flags);
 194         ZERO_STRUCT(base_reverse);
 195
 196         ZERO_STRUCT(conn_ctx_stack);
 197
 198         ZERO_STRUCT(sec_ctx_stack);
 199 }