Unix SMB/CIFS implementation.
connection claim routines
Copyright (C) Andrew Tridgell 1998
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-
-/****************************************************************************
- Delete a connection record.
-****************************************************************************/
-
-BOOL yield_connection(connection_struct *conn, const char *name)
-{
- struct db_record *rec;
- NTSTATUS status;
-
- DEBUG(3,("Yielding connection to %s\n",name));
-
- if (!(rec = connections_fetch_entry(NULL, conn, name))) {
- DEBUG(0, ("connections_fetch_entry failed\n"));
- return False;
- }
-
- status = rec->delete_rec(rec);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG( NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND) ? 3 : 0,
- ("deleting connection record returned %s\n",
- nt_errstr(status)));
- }
-
- TALLOC_FREE(rec);
- return NT_STATUS_IS_OK(status);
-}
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "dbwrap/dbwrap.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "messages.h"
+#include "lib/conn_tdb.h"
struct count_stat {
- pid_t mypid;
int curr_connections;
const char *name;
- BOOL Clear;
+ bool verify;
};
/****************************************************************************
Count the entries belonging to a service in the connection db.
****************************************************************************/
-static int count_fn(struct db_record *rec,
- const struct connections_key *ckey,
- const struct connections_data *crec,
+static int count_fn(struct smbXsrv_tcon_global0 *tcon,
void *udp)
{
struct count_stat *cs = (struct count_stat *)udp;
-
- if (crec->cnum == -1) {
- return 0;
- }
-
- /* If the pid was not found delete the entry from connections.tdb */
- if (cs->Clear && !process_exists(crec->pid) && (errno == ESRCH)) {
- NTSTATUS status;
- DEBUG(2,("pid %s doesn't exist - deleting connections %d [%s]\n",
- procid_str_static(&crec->pid), crec->cnum,
- crec->servicename));
-
- status = rec->delete_rec(rec);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("count_fn: tdb_delete failed with error %s\n",
- nt_errstr(status)));
- }
+ if (cs->verify && !process_exists(tcon->server_id)) {
return 0;
}
- if (strequal(crec->servicename, cs->name))
+ if (strequal(tcon->share_name, cs->name)) {
cs->curr_connections++;
+ }
return 0;
}
Claim an entry in the connections database.
****************************************************************************/
-int count_current_connections( const char *sharename, BOOL clear )
+int count_current_connections(const char *sharename, bool verify)
{
struct count_stat cs;
+ NTSTATUS status;
- cs.mypid = sys_getpid();
cs.curr_connections = 0;
cs.name = sharename;
- cs.Clear = clear;
+ cs.verify = verify;
/*
* This has a race condition, but locking the chain before hand is worse
* as it leads to deadlock.
*/
- if (connections_forall(count_fn, &cs) == -1) {
- DEBUG(0,("count_current_connections: traverse of "
- "connections.tdb failed\n"));
- return False;
- }
-
- return cs.curr_connections;
-}
-
-/****************************************************************************
- Claim an entry in the connections database.
-****************************************************************************/
-
-BOOL claim_connection(connection_struct *conn, const char *name,
- uint32 msg_flags)
-{
- struct db_record *rec;
- struct connections_data crec;
- TDB_DATA dbuf;
- NTSTATUS status;
-
- DEBUG(5,("claiming [%s]\n", name));
-
- if (!(rec = connections_fetch_entry(NULL, conn, name))) {
- DEBUG(0, ("connections_fetch_entry failed\n"));
- return False;
- }
-
- /* fill in the crec */
- ZERO_STRUCT(crec);
- crec.magic = 0x280267;
- crec.pid = procid_self();
- crec.cnum = conn?conn->cnum:-1;
- if (conn) {
- crec.uid = conn->uid;
- crec.gid = conn->gid;
- strlcpy(crec.servicename, lp_servicename(SNUM(conn)),
- sizeof(crec.servicename));
- }
- crec.start = time(NULL);
- crec.bcast_msg_flags = msg_flags;
-
- strlcpy(crec.machine,get_remote_machine_name(),sizeof(crec.machine));
- strlcpy(crec.addr,conn?conn->client_address:client_addr(),
- sizeof(crec.addr));
-
- dbuf.dptr = (uint8 *)&crec;
- dbuf.dsize = sizeof(crec);
-
- status = rec->store(rec, dbuf, TDB_REPLACE);
-
- TALLOC_FREE(rec);
+ status = smbXsrv_tcon_global_traverse(count_fn, &cs);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("claim_connection: tdb_store failed with error %s.\n",
- nt_errstr(status)));
- return False;
- }
-
- return True;
-}
-
-BOOL register_message_flags(BOOL doreg, uint32 msg_flags)
-{
- struct db_record *rec;
- struct connections_data *pcrec;
- NTSTATUS status;
-
- DEBUG(10,("register_message_flags: %s flags 0x%x\n",
- doreg ? "adding" : "removing",
- (unsigned int)msg_flags ));
-
- if (!(rec = connections_fetch_entry(NULL, NULL, ""))) {
- DEBUG(0, ("connections_fetch_entry failed\n"));
- return False;
- }
-
- if (rec->value.dsize != sizeof(struct connections_data)) {
- DEBUG(0,("register_message_flags: Got wrong record size\n"));
- TALLOC_FREE(rec);
- return False;
- }
-
- pcrec = (struct connections_data *)rec->value.dptr;
- if (doreg)
- pcrec->bcast_msg_flags |= msg_flags;
- else
- pcrec->bcast_msg_flags &= ~msg_flags;
-
- status = rec->store(rec, rec->value, TDB_REPLACE);
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("register_message_flags: tdb_store failed: %s.\n",
+ DEBUG(0,("count_current_connections: traverse of "
+ "smbXsrv_tcon_global.tdb failed - %s\n",
nt_errstr(status)));
- TALLOC_FREE(rec);
- return False;
- }
-
- DEBUG(10,("register_message_flags: new flags 0x%x\n",
- (unsigned int)pcrec->bcast_msg_flags ));
-
- TALLOC_FREE(rec);
-
- return True;
-}
-
-/*********************************************************************
-*********************************************************************/
-
-static TDB_DATA* make_pipe_rec_key( struct pipe_open_rec *prec )
-{
- TDB_DATA *kbuf = NULL;
- fstring key_string;
-
- if ( !prec )
- return NULL;
-
- if ( (kbuf = TALLOC_P(prec, TDB_DATA)) == NULL ) {
- return NULL;
+ return 0;
}
-
- snprintf( key_string, sizeof(key_string), "%s/%d/%d",
- prec->name, procid_to_pid(&prec->pid), prec->pnum );
-
- *kbuf = string_term_tdb_data(talloc_strdup(prec, key_string));
- if (kbuf->dptr == NULL )
- return NULL;
- return kbuf;
+ return cs.curr_connections;
}
-/*********************************************************************
-*********************************************************************/
-
-static void fill_pipe_open_rec( struct pipe_open_rec *prec, smb_np_struct *p )
+bool connections_snum_used(struct smbd_server_connection *unused, int snum)
{
- prec->pid = pid_to_procid(sys_getpid());
- prec->pnum = p->pnum;
- prec->uid = geteuid();
- fstrcpy( prec->name, p->name );
+ int active;
- return;
-}
-
-/*********************************************************************
-*********************************************************************/
-
-BOOL store_pipe_opendb( smb_np_struct *p )
-{
- struct db_record *dbrec;
- struct pipe_open_rec *prec;
- TDB_DATA *key;
- TDB_DATA data;
- BOOL ret = False;
-
- if ( (prec = TALLOC_P( NULL, struct pipe_open_rec)) == NULL ) {
- DEBUG(0,("store_pipe_opendb: talloc failed!\n"));
- return False;
- }
-
- fill_pipe_open_rec( prec, p );
- if ( (key = make_pipe_rec_key( prec )) == NULL ) {
- goto done;
- }
-
- data.dptr = (uint8 *)prec;
- data.dsize = sizeof(struct pipe_open_rec);
-
- if (!(dbrec = connections_fetch_record(prec, *key))) {
- DEBUG(0, ("connections_fetch_record failed\n"));
- goto done;
- }
-
- ret = NT_STATUS_IS_OK(dbrec->store(dbrec, data, TDB_REPLACE));
-
-done:
- TALLOC_FREE( prec );
- return ret;
-}
-
-/*********************************************************************
-*********************************************************************/
-
-BOOL delete_pipe_opendb( smb_np_struct *p )
-{
- struct db_record *dbrec;
- struct pipe_open_rec *prec;
- TDB_DATA *key;
- BOOL ret = False;
-
- if ( (prec = TALLOC_P( NULL, struct pipe_open_rec)) == NULL ) {
- DEBUG(0,("store_pipe_opendb: talloc failed!\n"));
- return False;
- }
-
- fill_pipe_open_rec( prec, p );
- if ( (key = make_pipe_rec_key( prec )) == NULL ) {
- goto done;
- }
-
- if (!(dbrec = connections_fetch_record(prec, *key))) {
- DEBUG(0, ("connections_fetch_record failed\n"));
- goto done;
+ active = count_current_connections(lp_servicename(talloc_tos(), snum),
+ true);
+ if (active > 0) {
+ return true;
}
- ret = NT_STATUS_IS_OK(dbrec->delete_rec(dbrec));
-
-done:
- TALLOC_FREE( prec );
- return ret;
+ return false;
}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff