2 Unix SMB/CIFS implementation.
3 Manage smbsrv_tcon structures
4 Copyright (C) Andrew Tridgell 1998
5 Copyright (C) Alexander Bokovoy 2002
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "dlinklist.h"
24 #include "smb_server/smb_server.h"
25 #include "smbd/service_stream.h"
26 #include "ntvfs/ntvfs.h"
29 /****************************************************************************
30 init the tcon structures
31 ****************************************************************************/
32 static NTSTATUS smbsrv_init_tcons(struct smbsrv_tcons_context *tcons_ctx, TALLOC_CTX *mem_ctx, uint32_t limit)
35 * the idr_* functions take 'int' as limit,
36 * and only work with a max limit 0x00FFFFFF
40 tcons_ctx->idtree_tid = idr_init(mem_ctx);
41 NT_STATUS_HAVE_NO_MEMORY(tcons_ctx->idtree_tid);
42 tcons_ctx->idtree_limit = limit;
43 tcons_ctx->list = NULL;
48 NTSTATUS smbsrv_smb_init_tcons(struct smbsrv_connection *smb_conn)
50 return smbsrv_init_tcons(&smb_conn->smb_tcons, smb_conn, UINT16_MAX);
53 NTSTATUS smbsrv_smb2_init_tcons(struct smbsrv_session *smb_sess)
55 return smbsrv_init_tcons(&smb_sess->smb2_tcons, smb_sess, UINT32_MAX);
58 /****************************************************************************
59 find a tcon given a tid for SMB
60 ****************************************************************************/
61 static struct smbsrv_tcon *smbsrv_tcon_find(struct smbsrv_tcons_context *tcons_ctx,
62 uint32_t tid, struct timeval request_time)
65 struct smbsrv_tcon *tcon;
67 if (tid == 0) return NULL;
69 if (tid > tcons_ctx->idtree_limit) return NULL;
71 p = idr_find(tcons_ctx->idtree_tid, tid);
74 tcon = talloc_get_type(p, struct smbsrv_tcon);
75 if (!tcon) return NULL;
77 tcon->statistics.last_request_time = request_time;
82 struct smbsrv_tcon *smbsrv_smb_tcon_find(struct smbsrv_connection *smb_conn,
83 uint32_t tid, struct timeval request_time)
85 return smbsrv_tcon_find(&smb_conn->smb_tcons, tid, request_time);
88 struct smbsrv_tcon *smbsrv_smb2_tcon_find(struct smbsrv_session *smb_sess,
89 uint32_t tid, struct timeval request_time)
91 if (!smb_sess) return NULL;
92 return smbsrv_tcon_find(&smb_sess->smb2_tcons, tid, request_time);
96 destroy a connection structure
98 static int smbsrv_tcon_destructor(void *ptr)
100 struct smbsrv_tcon *tcon = talloc_get_type(ptr, struct smbsrv_tcon);
101 struct smbsrv_tcons_context *tcons_ctx;
102 struct socket_address *client_addr;
104 client_addr = socket_get_peer_addr(tcon->smb_conn->connection->socket, ptr);
105 DEBUG(3,("%s closed connection to service %s\n",
106 client_addr ? client_addr->addr : "(unknown)",
109 /* tell the ntvfs backend that we are disconnecting */
111 ntvfs_disconnect(tcon->ntvfs);
114 if (tcon->smb2.session) {
115 tcons_ctx = &tcon->smb2.session->smb2_tcons;
117 tcons_ctx = &tcon->smb_conn->smb_tcons;
120 idr_remove(tcons_ctx->idtree_tid, tcon->tid);
121 DLIST_REMOVE(tcons_ctx->list, tcon);
126 find first available connection slot
128 static struct smbsrv_tcon *smbsrv_tcon_new(struct smbsrv_connection *smb_conn,
129 struct smbsrv_session *smb_sess,
130 const char *share_name)
133 struct smbsrv_tcons_context *tcons_ctx;
134 struct smbsrv_tcon *tcon;
139 tcons_ctx = &smb_sess->smb2_tcons;
142 tcons_ctx = &smb_conn->smb_tcons;
145 tcon = talloc_zero(mem_ctx, struct smbsrv_tcon);
146 if (!tcon) return NULL;
147 tcon->smb_conn = smb_conn;
148 tcon->smb2.session = smb_sess;
149 tcon->share_name = talloc_strdup(tcon, share_name);
150 if (!tcon->share_name) goto failed;
152 i = idr_get_new_random(tcons_ctx->idtree_tid, tcon, tcons_ctx->idtree_limit);
154 DEBUG(1,("ERROR! Out of connection structures\n"));
159 DLIST_ADD(tcons_ctx->list, tcon);
160 talloc_set_destructor(tcon, smbsrv_tcon_destructor);
162 /* now fill in some statistics */
163 tcon->statistics.connect_time = timeval_current();
172 struct smbsrv_tcon *smbsrv_smb_tcon_new(struct smbsrv_connection *smb_conn, const char *share_name)
174 return smbsrv_tcon_new(smb_conn, NULL, share_name);
177 struct smbsrv_tcon *smbsrv_smb2_tcon_new(struct smbsrv_session *smb_sess, const char *share_name)
179 return smbsrv_tcon_new(smb_sess->smb_conn, smb_sess, share_name);