2 Unix SMB/CIFS implementation.
3 Manage connections_struct 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.
24 /* set these to define the limits of the server. NOTE These are on a
25 per-client basis. Thus any one machine can't connect to more than
26 MAX_CONNECTIONS services, but any number of machines may connect at
28 #define MAX_CONNECTIONS 128
30 static connection_struct
*Connections
;
32 /* number of open connections */
33 static struct bitmap
*bmap
;
36 /****************************************************************************
37 init the conn structures
38 ****************************************************************************/
41 bmap
= bitmap_allocate(MAX_CONNECTIONS
);
44 /****************************************************************************
45 return the number of open connections
46 ****************************************************************************/
47 int conn_num_open(void)
53 /****************************************************************************
54 check if a snum is in use
55 ****************************************************************************/
56 BOOL
conn_snum_used(int snum
)
58 connection_struct
*conn
;
59 for (conn
=Connections
;conn
;conn
=conn
->next
) {
60 if (conn
->service
== snum
) {
68 /****************************************************************************
69 find a conn given a cnum
70 ****************************************************************************/
71 connection_struct
*conn_find(int cnum
)
74 connection_struct
*conn
;
76 for (conn
=Connections
;conn
;conn
=conn
->next
,count
++) {
77 if (conn
->cnum
== cnum
) {
79 DLIST_PROMOTE(Connections
, conn
);
89 /****************************************************************************
90 find first available connection slot, starting from a random position.
91 The randomisation stops problems with the server dieing and clients
92 thinking the server is still available.
93 ****************************************************************************/
94 connection_struct
*conn_new(void)
96 connection_struct
*conn
;
99 i
= bitmap_find(bmap
, 1);
102 DEBUG(1,("ERROR! Out of connection structures\n"));
106 conn
= (connection_struct
*)malloc(sizeof(*conn
));
107 if (!conn
) return NULL
;
116 string_set(&conn
->user
,"");
117 string_set(&conn
->dirpath
,"");
118 string_set(&conn
->connectpath
,"");
119 string_set(&conn
->origpath
,"");
121 DLIST_ADD(Connections
, conn
);
126 /****************************************************************************
127 close all conn structures
128 ****************************************************************************/
129 void conn_close_all(void)
131 connection_struct
*conn
, *next
;
132 for (conn
=Connections
;conn
;conn
=next
) {
134 close_cnum(conn
, (uint16
)-1);
138 /****************************************************************************
139 idle inactive connections
140 ****************************************************************************/
141 BOOL
conn_idle_all(time_t t
, int deadtime
)
144 connection_struct
*conn
, *next
;
146 for (conn
=Connections
;conn
;conn
=next
) {
148 /* close dirptrs on connections that are idle */
149 if ((t
-conn
->lastused
) > DPTR_IDLE_TIMEOUT
)
152 if (conn
->num_files_open
> 0 ||
153 (t
-conn
->lastused
)<deadtime
)
160 /****************************************************************************
161 Free a conn structure.
162 ****************************************************************************/
164 void conn_free(connection_struct
*conn
)
166 smb_vfs_handle_struct
*handle
, *thandle
;
167 void (*done_fptr
)(connection_struct
*the_conn
);
169 /* Free vfs_connection_struct */
170 handle
= conn
->vfs_private
;
172 /* Close dlopen() handle */
173 done_fptr
= (void (*)(connection_struct
*))sys_dlsym(handle
->handle
, "vfs_done");
175 if (done_fptr
== NULL
) {
176 DEBUG(3, ("No vfs_done() symbol found in module with handle %p, ignoring\n", handle
->handle
));
180 sys_dlclose(handle
->handle
);
181 DLIST_REMOVE(conn
->vfs_private
, handle
);
182 thandle
= handle
->next
;
187 DLIST_REMOVE(Connections
, conn
);
189 if (conn
->ngroups
&& conn
->groups
) {
190 SAFE_FREE(conn
->groups
);
194 delete_nt_token(&conn
->nt_user_token
);
195 free_namearray(conn
->veto_list
);
196 free_namearray(conn
->hide_list
);
197 free_namearray(conn
->veto_oplock_list
);
199 string_free(&conn
->user
);
200 string_free(&conn
->dirpath
);
201 string_free(&conn
->connectpath
);
202 string_free(&conn
->origpath
);
204 bitmap_clear(bmap
, conn
->cnum
);
212 /****************************************************************************
213 receive a smbcontrol message to forcibly unmount a share
214 the message contains just a share name and all instances of that
216 the special sharename '*' forces unmount of all shares
217 ****************************************************************************/
218 void msg_force_tdis(int msg_type
, pid_t pid
, void *buf
, size_t len
)
220 connection_struct
*conn
, *next
;
223 fstrcpy(sharename
, buf
);
225 if (strcmp(sharename
, "*") == 0) {
226 DEBUG(1,("Forcing close of all shares\n"));
231 for (conn
=Connections
;conn
;conn
=next
) {
233 if (strequal(lp_servicename(conn
->service
), sharename
)) {
234 DEBUG(1,("Forcing close of share %s cnum=%d\n",
235 sharename
, conn
->cnum
));
236 close_cnum(conn
, (uint16
)-1);