-/*
+/*
Unix SMB/CIFS implementation.
Manage connections_struct structures
Copyright (C) Andrew Tridgell 1998
Copyright (C) Alexander Bokovoy 2002
-
+ Copyright (C) Jeremy Allison 2010
+
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 2 of the License, or
+ 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "rpc_server/rpc_ncacn_np.h"
/* The connections bitmap is expanded in increments of BITMAP_BLOCK_SZ. The
* maximum size of the bitmap is the largest positive integer, but you will hit
* the "max connections" limit, looong before that.
*/
-#define BITMAP_BLOCK_SZ 128
-
-static connection_struct *Connections;
-/* number of open connections */
-static struct bitmap *bmap;
-static int num_open;
+#define BITMAP_BLOCK_SZ 128
/****************************************************************************
-init the conn structures
+ Init the conn structures.
****************************************************************************/
-void conn_init(void)
+
+void conn_init(struct smbd_server_connection *sconn)
{
- bmap = bitmap_allocate(BITMAP_BLOCK_SZ);
+ sconn->smb1.tcons.Connections = NULL;
+ sconn->smb1.tcons.bmap = bitmap_talloc(sconn, BITMAP_BLOCK_SZ);
}
/****************************************************************************
-return the number of open connections
+ Return the number of open connections.
****************************************************************************/
-int conn_num_open(void)
+
+int conn_num_open(struct smbd_server_connection *sconn)
{
- return num_open;
+ return sconn->num_tcons_open;
}
-
/****************************************************************************
-check if a snum is in use
+ Check if a snum is in use.
****************************************************************************/
-BOOL conn_snum_used(int snum)
+
+bool conn_snum_used(int snum)
{
- connection_struct *conn;
- for (conn=Connections;conn;conn=conn->next) {
- if (conn->service == snum) {
- return(True);
+ struct smbd_server_connection *sconn = smbd_server_conn;
+
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *ptcon;
+
+ for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) {
+ if (ptcon->compat_conn &&
+ ptcon->compat_conn->params &&
+ (ptcon->compat_conn->params->service == snum)) {
+ return true;
+ }
+ }
+ }
+ } else {
+ /* SMB1 */
+ connection_struct *conn;
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=conn->next) {
+ if (conn->params->service == snum) {
+ return true;
+ }
}
}
- return(False);
+ return false;
}
-
/****************************************************************************
-find a conn given a cnum
+ Find a conn given a cnum.
****************************************************************************/
-connection_struct *conn_find(unsigned cnum)
-{
- int count=0;
- connection_struct *conn;
- for (conn=Connections;conn;conn=conn->next,count++) {
- if (conn->cnum == cnum) {
- if (count > 10) {
- DLIST_PROMOTE(Connections, conn);
+connection_struct *conn_find(struct smbd_server_connection *sconn,unsigned cnum)
+{
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *ptcon;
+
+ for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) {
+ if (ptcon->compat_conn &&
+ ptcon->compat_conn->cnum == cnum) {
+ return ptcon->compat_conn;
+ }
+ }
+ }
+ } else {
+ /* SMB1 */
+ int count=0;
+ connection_struct *conn;
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=conn->next,count++) {
+ if (conn->cnum == cnum) {
+ if (count > 10) {
+ DLIST_PROMOTE(sconn->smb1.tcons.Connections,
+ conn);
+ }
+ return conn;
}
- return conn;
}
}
return NULL;
}
-
/****************************************************************************
- find first available connection slot, starting from a random position.
-The randomisation stops problems with the server dieing and clients
-thinking the server is still available.
+ Find first available connection slot, starting from a random position.
+ The randomisation stops problems with the server dieing and clients
+ thinking the server is still available.
****************************************************************************/
-connection_struct *conn_new(void)
+
+connection_struct *conn_new(struct smbd_server_connection *sconn)
{
- TALLOC_CTX *mem_ctx;
connection_struct *conn;
int i;
int find_offset = 1;
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ if (!(conn=TALLOC_ZERO_P(NULL, connection_struct)) ||
+ !(conn->params = TALLOC_P(conn, struct share_params))) {
+ DEBUG(0,("TALLOC_ZERO() failed!\n"));
+ TALLOC_FREE(conn);
+ return NULL;
+ }
+ conn->sconn = sconn;
+ return conn;
+ }
+
+ /* SMB1 */
find_again:
- i = bitmap_find(bmap, find_offset);
-
+ i = bitmap_find(sconn->smb1.tcons.bmap, find_offset);
+
if (i == -1) {
/* Expand the connections bitmap. */
- int oldsz = bmap->n;
- int newsz = bmap->n + BITMAP_BLOCK_SZ;
+ int oldsz = sconn->smb1.tcons.bmap->n;
+ int newsz = sconn->smb1.tcons.bmap->n +
+ BITMAP_BLOCK_SZ;
struct bitmap * nbmap;
- if (newsz <= 0) {
+ if (newsz <= oldsz) {
/* Integer wrap. */
DEBUG(0,("ERROR! Out of connection structures\n"));
return NULL;
DEBUG(4,("resizing connections bitmap from %d to %d\n",
oldsz, newsz));
- nbmap = bitmap_allocate(newsz);
+ nbmap = bitmap_talloc(sconn, newsz);
+ if (!nbmap) {
+ DEBUG(0,("ERROR! malloc fail.\n"));
+ return NULL;
+ }
- bitmap_copy(nbmap, bmap);
- bitmap_free(bmap);
+ bitmap_copy(nbmap, sconn->smb1.tcons.bmap);
+ TALLOC_FREE(sconn->smb1.tcons.bmap);
- bmap = nbmap;
+ sconn->smb1.tcons.bmap = nbmap;
find_offset = oldsz; /* Start next search in the new portion. */
goto find_again;
}
- if ((mem_ctx=talloc_init("connection_struct"))==NULL) {
- DEBUG(0,("talloc_init(connection_struct) failed!\n"));
+ /* The bitmap position is used below as the connection number
+ * conn->cnum). This ends up as the TID field in the SMB header,
+ * which is limited to 16 bits (we skip 0xffff which is the
+ * NULL TID).
+ */
+ if (i > 65534) {
+ DEBUG(0, ("Maximum connection limit reached\n"));
return NULL;
}
- if ((conn=TALLOC_ZERO_P(mem_ctx, connection_struct))==NULL) {
- DEBUG(0,("talloc_zero() failed!\n"));
+ if (!(conn=TALLOC_ZERO_P(NULL, connection_struct)) ||
+ !(conn->params = TALLOC_P(conn, struct share_params))) {
+ DEBUG(0,("TALLOC_ZERO() failed!\n"));
+ TALLOC_FREE(conn);
return NULL;
}
- conn->mem_ctx = mem_ctx;
+ conn->sconn = sconn;
conn->cnum = i;
+ conn->force_group_gid = (gid_t)-1;
- bitmap_set(bmap, i);
+ bitmap_set(sconn->smb1.tcons.bmap, i);
- num_open++;
+ sconn->num_tcons_open++;
- string_set(&conn->user,"");
- string_set(&conn->dirpath,"");
string_set(&conn->connectpath,"");
string_set(&conn->origpath,"");
-
- DLIST_ADD(Connections, conn);
+
+ DLIST_ADD(sconn->smb1.tcons.Connections, conn);
return conn;
}
/****************************************************************************
-close all conn structures
+ Close all conn structures.
+ Return true if any were closed.
****************************************************************************/
-void conn_close_all(void)
+
+bool conn_close_all(struct smbd_server_connection *sconn)
{
- connection_struct *conn, *next;
- for (conn=Connections;conn;conn=next) {
- next=conn->next;
- set_current_service(conn, 0, True);
- close_cnum(conn, conn->vuid);
+ bool ret = false;
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *tcon, *tc_next;
+
+ for (tcon = sess->tcons.list; tcon; tcon = tc_next) {
+ tc_next = tcon->next;
+ TALLOC_FREE(tcon);
+ ret = true;
+ }
+ }
+ } else {
+ /* SMB1 */
+ connection_struct *conn, *next;
+
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=next) {
+ next=conn->next;
+ set_current_service(conn, 0, True);
+ close_cnum(conn, conn->vuid);
+ ret = true;
+ }
+ }
+ return ret;
+}
+
+/****************************************************************************
+ Update last used timestamps.
+****************************************************************************/
+
+static void conn_lastused_update(struct smbd_server_connection *sconn,time_t t)
+{
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *ptcon;
+
+ for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) {
+ connection_struct *conn = ptcon->compat_conn;
+ /* Update if connection wasn't idle. */
+ if (conn && conn->lastused != conn->lastused_count) {
+ conn->lastused = t;
+ conn->lastused_count = t;
+ }
+ }
+ }
+ } else {
+ /* SMB1 */
+ connection_struct *conn;
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=conn->next) {
+ /* Update if connection wasn't idle. */
+ if (conn->lastused != conn->lastused_count) {
+ conn->lastused = t;
+ conn->lastused_count = t;
+ }
+ }
}
}
Idle inactive connections.
****************************************************************************/
-BOOL conn_idle_all(time_t t, int deadtime)
+bool conn_idle_all(struct smbd_server_connection *sconn, time_t t)
{
- pipes_struct *plist = NULL;
- BOOL allidle = True;
- connection_struct *conn, *next;
+ int deadtime = lp_deadtime()*60;
+
+ conn_lastused_update(sconn, t);
+
+ if (deadtime <= 0) {
+ deadtime = DEFAULT_SMBD_TIMEOUT;
+ }
- for (conn=Connections;conn;conn=next) {
- next=conn->next;
- /* close dirptrs on connections that are idle */
- if ((t-conn->lastused) > DPTR_IDLE_TIMEOUT)
- dptr_idlecnum(conn);
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *ptcon;
+
+ for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) {
+ time_t age;
+ connection_struct *conn = ptcon->compat_conn;
+
+ if (conn == NULL) {
+ continue;
+ }
+
+ age = t - conn->lastused;
+ /* close dirptrs on connections that are idle */
+ if (age > DPTR_IDLE_TIMEOUT) {
+ dptr_idlecnum(conn);
+ }
+
+ if (conn->num_files_open > 0 || age < deadtime) {
+ return false;
+ }
+ }
+ }
+ } else {
+ /* SMB1 */
+ connection_struct *conn;
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=conn->next) {
+ time_t age = t - conn->lastused;
+
+ /* close dirptrs on connections that are idle */
+ if (age > DPTR_IDLE_TIMEOUT) {
+ dptr_idlecnum(conn);
+ }
- if (conn->num_files_open > 0 ||
- (t-conn->lastused)<deadtime)
- allidle = False;
+ if (conn->num_files_open > 0 || age < deadtime) {
+ return false;
+ }
+ }
}
/*
* Check all pipes for any open handles. We cannot
* idle with a handle open.
*/
+ if (check_open_pipes()) {
+ return false;
+ }
- for (plist = get_first_internal_pipe(); plist; plist = get_next_internal_pipe(plist))
- if (plist->pipe_handles && plist->pipe_handles->count)
- allidle = False;
-
- return allidle;
+ return true;
}
/****************************************************************************
Clear a vuid out of the validity cache, and as the 'owner' of a connection.
****************************************************************************/
-void conn_clear_vuid_cache(uint16 vuid)
+void conn_clear_vuid_caches(struct smbd_server_connection *sconn,uint16_t vuid)
{
connection_struct *conn;
- unsigned int i;
- for (conn=Connections;conn;conn=conn->next) {
- if (conn->vuid == vuid) {
- conn->vuid = UID_FIELD_INVALID;
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *ptcon;
+
+ for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) {
+ if (ptcon->compat_conn) {
+ if (ptcon->compat_conn->vuid == vuid) {
+ ptcon->compat_conn->vuid = UID_FIELD_INVALID;
+ }
+ conn_clear_vuid_cache(ptcon->compat_conn, vuid);
+ }
+ }
}
-
- for (i=0;i<conn->vuid_cache.entries && i< VUID_CACHE_SIZE;i++) {
- if (conn->vuid_cache.array[i].vuid == vuid) {
- struct vuid_cache_entry *ent = &conn->vuid_cache.array[i];
- ent->vuid = UID_FIELD_INVALID;
- ent->read_only = False;
- ent->admin_user = False;
+ } else {
+ /* SMB1 */
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=conn->next) {
+ if (conn->vuid == vuid) {
+ conn->vuid = UID_FIELD_INVALID;
}
+ conn_clear_vuid_cache(conn, vuid);
}
}
}
Free a conn structure - internal part.
****************************************************************************/
-void conn_free_internal(connection_struct *conn)
+static void conn_free_internal(connection_struct *conn)
{
- vfs_handle_struct *handle = NULL, *thandle = NULL;
- TALLOC_CTX *mem_ctx = NULL;
+ vfs_handle_struct *handle = NULL, *thandle = NULL;
+ struct trans_state *state = NULL;
/* Free vfs_connection_struct */
handle = conn->vfs_handles;
while(handle) {
- DLIST_REMOVE(conn->vfs_handles, handle);
thandle = handle->next;
+ DLIST_REMOVE(conn->vfs_handles, handle);
if (handle->free_data)
handle->free_data(&handle->data);
handle = thandle;
}
- if (conn->ngroups && conn->groups) {
- SAFE_FREE(conn->groups);
- conn->ngroups = 0;
- }
-
- if (conn->nt_user_token) {
- TALLOC_FREE(conn->nt_user_token);
+ /* Free any pending transactions stored on this conn. */
+ for (state = conn->pending_trans; state; state = state->next) {
+ /* state->setup is a talloc child of state. */
+ SAFE_FREE(state->param);
+ SAFE_FREE(state->data);
}
free_namearray(conn->veto_list);
free_namearray(conn->hide_list);
free_namearray(conn->veto_oplock_list);
free_namearray(conn->aio_write_behind_list);
-
- string_free(&conn->user);
- string_free(&conn->dirpath);
+
string_free(&conn->connectpath);
string_free(&conn->origpath);
- mem_ctx = conn->mem_ctx;
ZERO_STRUCTP(conn);
- talloc_destroy(mem_ctx);
+ talloc_destroy(conn);
}
/****************************************************************************
void conn_free(connection_struct *conn)
{
- DLIST_REMOVE(Connections, conn);
+ if (conn->sconn == NULL) {
+ conn_free_internal(conn);
+ return;
+ }
- bitmap_clear(bmap, conn->cnum);
- num_open--;
+ if (conn->sconn->using_smb2) {
+ /* SMB2 */
+ conn_free_internal(conn);
+ return;
+ }
+
+ /* SMB1 */
+ DLIST_REMOVE(conn->sconn->smb1.tcons.Connections, conn);
+
+ if (conn->sconn->smb1.tcons.bmap != NULL) {
+ /*
+ * Can be NULL for fake connections created by
+ * create_conn_struct()
+ */
+ bitmap_clear(conn->sconn->smb1.tcons.bmap, conn->cnum);
+ }
+
+ SMB_ASSERT(conn->sconn->num_tcons_open > 0);
+ conn->sconn->num_tcons_open--;
conn_free_internal(conn);
}
-
+
/****************************************************************************
-receive a smbcontrol message to forcibly unmount a share
-the message contains just a share name and all instances of that
-share are unmounted
-the special sharename '*' forces unmount of all shares
+ Receive a smbcontrol message to forcibly unmount a share.
+ The message contains just a share name and all instances of that
+ share are unmounted.
+ The special sharename '*' forces unmount of all shares.
****************************************************************************/
-void msg_force_tdis(int msg_type, struct process_id pid, void *buf, size_t len)
+
+void msg_force_tdis(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
{
+ struct smbd_server_connection *sconn;
connection_struct *conn, *next;
fstring sharename;
- fstrcpy(sharename, (const char *)buf);
+ sconn = msg_ctx_to_sconn(msg);
+ if (sconn == NULL) {
+ DEBUG(1, ("could not find sconn\n"));
+ return;
+ }
+
+ fstrcpy(sharename, (const char *)data->data);
if (strcmp(sharename, "*") == 0) {
DEBUG(1,("Forcing close of all shares\n"));
- conn_close_all();
+ conn_close_all(sconn);
return;
}
- for (conn=Connections;conn;conn=next) {
- next=conn->next;
- if (strequal(lp_servicename(conn->service), sharename)) {
- DEBUG(1,("Forcing close of share %s cnum=%d\n",
- sharename, conn->cnum));
- close_cnum(conn, (uint16)-1);
+ if (sconn->using_smb2) {
+ /* SMB2 */
+ struct smbd_smb2_session *sess;
+ for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) {
+ struct smbd_smb2_tcon *tcon, *tc_next;
+
+ for (tcon = sess->tcons.list; tcon; tcon = tc_next) {
+ tc_next = tcon->next;
+ if (tcon->compat_conn &&
+ strequal(lp_servicename(SNUM(tcon->compat_conn)),
+ sharename)) {
+ DEBUG(1,("Forcing close of share %s cnum=%d\n",
+ sharename, tcon->compat_conn->cnum));
+ TALLOC_FREE(tcon);
+ }
+ }
+ }
+ } else {
+ /* SMB1 */
+ for (conn=sconn->smb1.tcons.Connections;conn;conn=next) {
+ next=conn->next;
+ if (strequal(lp_servicename(SNUM(conn)), sharename)) {
+ DEBUG(1,("Forcing close of share %s cnum=%d\n",
+ sharename, conn->cnum));
+ close_cnum(conn, (uint16)-1);
+ }
}
}
}
git.samba.org / samba.git / blobdiff