3711 lines
109 KiB
C
3711 lines
109 KiB
C
/*
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* fs/cifs/connect.c
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*
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* Copyright (C) International Business Machines Corp., 2002,2008
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/fs.h>
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#include <linux/net.h>
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#include <linux/string.h>
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#include <linux/list.h>
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#include <linux/wait.h>
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#include <linux/ipv6.h>
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#include <linux/pagemap.h>
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#include <linux/ctype.h>
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#include <linux/utsname.h>
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#include <linux/mempool.h>
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#include <linux/delay.h>
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#include <linux/completion.h>
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#include <linux/kthread.h>
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#include <linux/pagevec.h>
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#include <linux/freezer.h>
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#include <asm/uaccess.h>
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#include <asm/processor.h>
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_unicode.h"
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#include "cifs_debug.h"
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#include "cifs_fs_sb.h"
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#include "ntlmssp.h"
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#include "nterr.h"
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#include "rfc1002pdu.h"
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#include "cn_cifs.h"
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#define CIFS_PORT 445
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#define RFC1001_PORT 139
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extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
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unsigned char *p24);
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extern mempool_t *cifs_req_poolp;
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struct smb_vol {
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char *username;
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char *password;
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char *domainname;
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char *UNC;
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char *UNCip;
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char *in6_addr; /* ipv6 address as human readable form of in6_addr */
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char *iocharset; /* local code page for mapping to and from Unicode */
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char source_rfc1001_name[16]; /* netbios name of client */
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char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
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uid_t linux_uid;
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gid_t linux_gid;
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mode_t file_mode;
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mode_t dir_mode;
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unsigned secFlg;
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bool rw:1;
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bool retry:1;
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bool intr:1;
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bool setuids:1;
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bool override_uid:1;
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bool override_gid:1;
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bool dynperm:1;
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bool noperm:1;
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bool no_psx_acl:1; /* set if posix acl support should be disabled */
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bool cifs_acl:1;
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bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
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bool server_ino:1; /* use inode numbers from server ie UniqueId */
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bool direct_io:1;
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bool remap:1; /* set to remap seven reserved chars in filenames */
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bool posix_paths:1; /* unset to not ask for posix pathnames. */
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bool no_linux_ext:1;
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bool sfu_emul:1;
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bool nullauth:1; /* attempt to authenticate with null user */
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bool nocase:1; /* request case insensitive filenames */
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bool nobrl:1; /* disable sending byte range locks to srv */
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bool seal:1; /* request transport encryption on share */
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unsigned int rsize;
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unsigned int wsize;
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unsigned int sockopt;
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unsigned short int port;
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char *prepath;
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};
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static int ipv4_connect(struct sockaddr_in *psin_server,
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struct socket **csocket,
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char *netb_name,
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char *server_netb_name);
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static int ipv6_connect(struct sockaddr_in6 *psin_server,
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struct socket **csocket);
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/*
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* cifs tcp session reconnection
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*
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* mark tcp session as reconnecting so temporarily locked
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* mark all smb sessions as reconnecting for tcp session
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* reconnect tcp session
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* wake up waiters on reconnection? - (not needed currently)
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*/
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static int
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cifs_reconnect(struct TCP_Server_Info *server)
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{
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int rc = 0;
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struct list_head *tmp;
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struct cifsSesInfo *ses;
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struct cifsTconInfo *tcon;
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struct mid_q_entry *mid_entry;
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spin_lock(&GlobalMid_Lock);
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if (kthread_should_stop()) {
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/* the demux thread will exit normally
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next time through the loop */
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spin_unlock(&GlobalMid_Lock);
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return rc;
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} else
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server->tcpStatus = CifsNeedReconnect;
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spin_unlock(&GlobalMid_Lock);
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server->maxBuf = 0;
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cFYI(1, ("Reconnecting tcp session"));
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/* before reconnecting the tcp session, mark the smb session (uid)
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and the tid bad so they are not used until reconnected */
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read_lock(&GlobalSMBSeslock);
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list_for_each(tmp, &GlobalSMBSessionList) {
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ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
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if (ses->server) {
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if (ses->server == server) {
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ses->status = CifsNeedReconnect;
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ses->ipc_tid = 0;
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}
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}
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/* else tcp and smb sessions need reconnection */
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}
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list_for_each(tmp, &GlobalTreeConnectionList) {
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tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
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if ((tcon->ses) && (tcon->ses->server == server))
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tcon->tidStatus = CifsNeedReconnect;
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}
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read_unlock(&GlobalSMBSeslock);
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/* do not want to be sending data on a socket we are freeing */
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down(&server->tcpSem);
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if (server->ssocket) {
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cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state,
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server->ssocket->flags));
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kernel_sock_shutdown(server->ssocket, SHUT_WR);
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cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx",
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server->ssocket->state,
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server->ssocket->flags));
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sock_release(server->ssocket);
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server->ssocket = NULL;
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}
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spin_lock(&GlobalMid_Lock);
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list_for_each(tmp, &server->pending_mid_q) {
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mid_entry = list_entry(tmp, struct
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mid_q_entry,
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qhead);
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if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
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/* Mark other intransit requests as needing
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retry so we do not immediately mark the
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session bad again (ie after we reconnect
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below) as they timeout too */
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mid_entry->midState = MID_RETRY_NEEDED;
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}
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}
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spin_unlock(&GlobalMid_Lock);
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up(&server->tcpSem);
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while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) {
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try_to_freeze();
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if (server->protocolType == IPV6) {
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rc = ipv6_connect(&server->addr.sockAddr6,
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&server->ssocket);
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} else {
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rc = ipv4_connect(&server->addr.sockAddr,
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&server->ssocket,
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server->workstation_RFC1001_name,
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server->server_RFC1001_name);
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}
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if (rc) {
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cFYI(1, ("reconnect error %d", rc));
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msleep(3000);
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} else {
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atomic_inc(&tcpSesReconnectCount);
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spin_lock(&GlobalMid_Lock);
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if (!kthread_should_stop())
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server->tcpStatus = CifsGood;
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server->sequence_number = 0;
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spin_unlock(&GlobalMid_Lock);
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/* atomic_set(&server->inFlight,0);*/
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wake_up(&server->response_q);
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}
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}
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return rc;
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}
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/*
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return codes:
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0 not a transact2, or all data present
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>0 transact2 with that much data missing
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-EINVAL = invalid transact2
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*/
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static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize)
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{
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struct smb_t2_rsp *pSMBt;
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int total_data_size;
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int data_in_this_rsp;
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int remaining;
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if (pSMB->Command != SMB_COM_TRANSACTION2)
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return 0;
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/* check for plausible wct, bcc and t2 data and parm sizes */
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/* check for parm and data offset going beyond end of smb */
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if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
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cFYI(1, ("invalid transact2 word count"));
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return -EINVAL;
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}
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pSMBt = (struct smb_t2_rsp *)pSMB;
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total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
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data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount);
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remaining = total_data_size - data_in_this_rsp;
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if (remaining == 0)
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return 0;
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else if (remaining < 0) {
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cFYI(1, ("total data %d smaller than data in frame %d",
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total_data_size, data_in_this_rsp));
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return -EINVAL;
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} else {
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cFYI(1, ("missing %d bytes from transact2, check next response",
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remaining));
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if (total_data_size > maxBufSize) {
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cERROR(1, ("TotalDataSize %d is over maximum buffer %d",
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total_data_size, maxBufSize));
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return -EINVAL;
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}
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return remaining;
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}
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}
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static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
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{
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struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond;
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struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB;
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int total_data_size;
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int total_in_buf;
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int remaining;
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int total_in_buf2;
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char *data_area_of_target;
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char *data_area_of_buf2;
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__u16 byte_count;
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total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
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if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) {
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cFYI(1, ("total data size of primary and secondary t2 differ"));
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}
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total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount);
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remaining = total_data_size - total_in_buf;
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if (remaining < 0)
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return -EINVAL;
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if (remaining == 0) /* nothing to do, ignore */
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return 0;
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total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount);
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if (remaining < total_in_buf2) {
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cFYI(1, ("transact2 2nd response contains too much data"));
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}
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/* find end of first SMB data area */
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data_area_of_target = (char *)&pSMBt->hdr.Protocol +
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le16_to_cpu(pSMBt->t2_rsp.DataOffset);
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/* validate target area */
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data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol +
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le16_to_cpu(pSMB2->t2_rsp.DataOffset);
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data_area_of_target += total_in_buf;
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/* copy second buffer into end of first buffer */
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memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2);
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total_in_buf += total_in_buf2;
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pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf);
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byte_count = le16_to_cpu(BCC_LE(pTargetSMB));
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byte_count += total_in_buf2;
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BCC_LE(pTargetSMB) = cpu_to_le16(byte_count);
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byte_count = pTargetSMB->smb_buf_length;
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byte_count += total_in_buf2;
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/* BB also add check that we are not beyond maximum buffer size */
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pTargetSMB->smb_buf_length = byte_count;
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if (remaining == total_in_buf2) {
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cFYI(1, ("found the last secondary response"));
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return 0; /* we are done */
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} else /* more responses to go */
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return 1;
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}
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static int
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cifs_demultiplex_thread(struct TCP_Server_Info *server)
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{
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int length;
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unsigned int pdu_length, total_read;
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struct smb_hdr *smb_buffer = NULL;
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struct smb_hdr *bigbuf = NULL;
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struct smb_hdr *smallbuf = NULL;
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struct msghdr smb_msg;
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struct kvec iov;
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struct socket *csocket = server->ssocket;
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struct list_head *tmp;
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struct cifsSesInfo *ses;
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struct task_struct *task_to_wake = NULL;
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struct mid_q_entry *mid_entry;
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char temp;
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bool isLargeBuf = false;
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bool isMultiRsp;
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int reconnect;
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current->flags |= PF_MEMALLOC;
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cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current)));
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length = atomic_inc_return(&tcpSesAllocCount);
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if (length > 1)
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mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
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GFP_KERNEL);
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set_freezable();
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while (!kthread_should_stop()) {
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if (try_to_freeze())
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continue;
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if (bigbuf == NULL) {
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bigbuf = cifs_buf_get();
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if (!bigbuf) {
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cERROR(1, ("No memory for large SMB response"));
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msleep(3000);
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/* retry will check if exiting */
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continue;
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}
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} else if (isLargeBuf) {
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/* we are reusing a dirty large buf, clear its start */
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memset(bigbuf, 0, sizeof(struct smb_hdr));
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}
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if (smallbuf == NULL) {
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smallbuf = cifs_small_buf_get();
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if (!smallbuf) {
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cERROR(1, ("No memory for SMB response"));
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msleep(1000);
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/* retry will check if exiting */
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continue;
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}
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/* beginning of smb buffer is cleared in our buf_get */
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} else /* if existing small buf clear beginning */
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memset(smallbuf, 0, sizeof(struct smb_hdr));
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isLargeBuf = false;
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isMultiRsp = false;
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smb_buffer = smallbuf;
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iov.iov_base = smb_buffer;
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iov.iov_len = 4;
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smb_msg.msg_control = NULL;
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smb_msg.msg_controllen = 0;
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pdu_length = 4; /* enough to get RFC1001 header */
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incomplete_rcv:
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length =
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kernel_recvmsg(csocket, &smb_msg,
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&iov, 1, pdu_length, 0 /* BB other flags? */);
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if (kthread_should_stop()) {
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break;
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} else if (server->tcpStatus == CifsNeedReconnect) {
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cFYI(1, ("Reconnect after server stopped responding"));
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cifs_reconnect(server);
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cFYI(1, ("call to reconnect done"));
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csocket = server->ssocket;
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continue;
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} else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) {
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msleep(1); /* minimum sleep to prevent looping
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allowing socket to clear and app threads to set
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tcpStatus CifsNeedReconnect if server hung */
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if (pdu_length < 4)
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goto incomplete_rcv;
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else
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continue;
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} else if (length <= 0) {
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if (server->tcpStatus == CifsNew) {
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cFYI(1, ("tcp session abend after SMBnegprot"));
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/* some servers kill the TCP session rather than
|
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returning an SMB negprot error, in which
|
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case reconnecting here is not going to help,
|
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and so simply return error to mount */
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break;
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}
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if (!try_to_freeze() && (length == -EINTR)) {
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cFYI(1, ("cifsd thread killed"));
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break;
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}
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cFYI(1, ("Reconnect after unexpected peek error %d",
|
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length));
|
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cifs_reconnect(server);
|
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csocket = server->ssocket;
|
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wake_up(&server->response_q);
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continue;
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} else if (length < pdu_length) {
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cFYI(1, ("requested %d bytes but only got %d bytes",
|
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pdu_length, length));
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pdu_length -= length;
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msleep(1);
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goto incomplete_rcv;
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}
|
|
|
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/* The right amount was read from socket - 4 bytes */
|
|
/* so we can now interpret the length field */
|
|
|
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/* the first byte big endian of the length field,
|
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is actually not part of the length but the type
|
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with the most common, zero, as regular data */
|
|
temp = *((char *) smb_buffer);
|
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|
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/* Note that FC 1001 length is big endian on the wire,
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but we convert it here so it is always manipulated
|
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as host byte order */
|
|
pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length);
|
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smb_buffer->smb_buf_length = pdu_length;
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cFYI(1, ("rfc1002 length 0x%x", pdu_length+4));
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|
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if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) {
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continue;
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} else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
|
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cFYI(1, ("Good RFC 1002 session rsp"));
|
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continue;
|
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} else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) {
|
|
/* we get this from Windows 98 instead of
|
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an error on SMB negprot response */
|
|
cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)",
|
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pdu_length));
|
|
if (server->tcpStatus == CifsNew) {
|
|
/* if nack on negprot (rather than
|
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ret of smb negprot error) reconnecting
|
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not going to help, ret error to mount */
|
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break;
|
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} else {
|
|
/* give server a second to
|
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clean up before reconnect attempt */
|
|
msleep(1000);
|
|
/* always try 445 first on reconnect
|
|
since we get NACK on some if we ever
|
|
connected to port 139 (the NACK is
|
|
since we do not begin with RFC1001
|
|
session initialize frame) */
|
|
server->addr.sockAddr.sin_port =
|
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htons(CIFS_PORT);
|
|
cifs_reconnect(server);
|
|
csocket = server->ssocket;
|
|
wake_up(&server->response_q);
|
|
continue;
|
|
}
|
|
} else if (temp != (char) 0) {
|
|
cERROR(1, ("Unknown RFC 1002 frame"));
|
|
cifs_dump_mem(" Received Data: ", (char *)smb_buffer,
|
|
length);
|
|
cifs_reconnect(server);
|
|
csocket = server->ssocket;
|
|
continue;
|
|
}
|
|
|
|
/* else we have an SMB response */
|
|
if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) ||
|
|
(pdu_length < sizeof(struct smb_hdr) - 1 - 4)) {
|
|
cERROR(1, ("Invalid size SMB length %d pdu_length %d",
|
|
length, pdu_length+4));
|
|
cifs_reconnect(server);
|
|
csocket = server->ssocket;
|
|
wake_up(&server->response_q);
|
|
continue;
|
|
}
|
|
|
|
/* else length ok */
|
|
reconnect = 0;
|
|
|
|
if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) {
|
|
isLargeBuf = true;
|
|
memcpy(bigbuf, smallbuf, 4);
|
|
smb_buffer = bigbuf;
|
|
}
|
|
length = 0;
|
|
iov.iov_base = 4 + (char *)smb_buffer;
|
|
iov.iov_len = pdu_length;
|
|
for (total_read = 0; total_read < pdu_length;
|
|
total_read += length) {
|
|
length = kernel_recvmsg(csocket, &smb_msg, &iov, 1,
|
|
pdu_length - total_read, 0);
|
|
if (kthread_should_stop() ||
|
|
(length == -EINTR)) {
|
|
/* then will exit */
|
|
reconnect = 2;
|
|
break;
|
|
} else if (server->tcpStatus == CifsNeedReconnect) {
|
|
cifs_reconnect(server);
|
|
csocket = server->ssocket;
|
|
/* Reconnect wakes up rspns q */
|
|
/* Now we will reread sock */
|
|
reconnect = 1;
|
|
break;
|
|
} else if ((length == -ERESTARTSYS) ||
|
|
(length == -EAGAIN)) {
|
|
msleep(1); /* minimum sleep to prevent looping,
|
|
allowing socket to clear and app
|
|
threads to set tcpStatus
|
|
CifsNeedReconnect if server hung*/
|
|
length = 0;
|
|
continue;
|
|
} else if (length <= 0) {
|
|
cERROR(1, ("Received no data, expecting %d",
|
|
pdu_length - total_read));
|
|
cifs_reconnect(server);
|
|
csocket = server->ssocket;
|
|
reconnect = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (reconnect == 2)
|
|
break;
|
|
else if (reconnect == 1)
|
|
continue;
|
|
|
|
length += 4; /* account for rfc1002 hdr */
|
|
|
|
|
|
dump_smb(smb_buffer, length);
|
|
if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) {
|
|
cifs_dump_mem("Bad SMB: ", smb_buffer, 48);
|
|
continue;
|
|
}
|
|
|
|
|
|
task_to_wake = NULL;
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_for_each(tmp, &server->pending_mid_q) {
|
|
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
|
|
|
|
if ((mid_entry->mid == smb_buffer->Mid) &&
|
|
(mid_entry->midState == MID_REQUEST_SUBMITTED) &&
|
|
(mid_entry->command == smb_buffer->Command)) {
|
|
if (check2ndT2(smb_buffer,server->maxBuf) > 0) {
|
|
/* We have a multipart transact2 resp */
|
|
isMultiRsp = true;
|
|
if (mid_entry->resp_buf) {
|
|
/* merge response - fix up 1st*/
|
|
if (coalesce_t2(smb_buffer,
|
|
mid_entry->resp_buf)) {
|
|
mid_entry->multiRsp =
|
|
true;
|
|
break;
|
|
} else {
|
|
/* all parts received */
|
|
mid_entry->multiEnd =
|
|
true;
|
|
goto multi_t2_fnd;
|
|
}
|
|
} else {
|
|
if (!isLargeBuf) {
|
|
cERROR(1,("1st trans2 resp needs bigbuf"));
|
|
/* BB maybe we can fix this up, switch
|
|
to already allocated large buffer? */
|
|
} else {
|
|
/* Have first buffer */
|
|
mid_entry->resp_buf =
|
|
smb_buffer;
|
|
mid_entry->largeBuf =
|
|
true;
|
|
bigbuf = NULL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
mid_entry->resp_buf = smb_buffer;
|
|
mid_entry->largeBuf = isLargeBuf;
|
|
multi_t2_fnd:
|
|
task_to_wake = mid_entry->tsk;
|
|
mid_entry->midState = MID_RESPONSE_RECEIVED;
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
mid_entry->when_received = jiffies;
|
|
#endif
|
|
/* so we do not time out requests to server
|
|
which is still responding (since server could
|
|
be busy but not dead) */
|
|
server->lstrp = jiffies;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock(&GlobalMid_Lock);
|
|
if (task_to_wake) {
|
|
/* Was previous buf put in mpx struct for multi-rsp? */
|
|
if (!isMultiRsp) {
|
|
/* smb buffer will be freed by user thread */
|
|
if (isLargeBuf)
|
|
bigbuf = NULL;
|
|
else
|
|
smallbuf = NULL;
|
|
}
|
|
wake_up_process(task_to_wake);
|
|
} else if (!is_valid_oplock_break(smb_buffer, server) &&
|
|
!isMultiRsp) {
|
|
cERROR(1, ("No task to wake, unknown frame received! "
|
|
"NumMids %d", midCount.counter));
|
|
cifs_dump_mem("Received Data is: ", (char *)smb_buffer,
|
|
sizeof(struct smb_hdr));
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
cifs_dump_detail(smb_buffer);
|
|
cifs_dump_mids(server);
|
|
#endif /* CIFS_DEBUG2 */
|
|
|
|
}
|
|
} /* end while !EXITING */
|
|
|
|
spin_lock(&GlobalMid_Lock);
|
|
server->tcpStatus = CifsExiting;
|
|
spin_unlock(&GlobalMid_Lock);
|
|
wake_up_all(&server->response_q);
|
|
|
|
/* don't exit until kthread_stop is called */
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
while (!kthread_should_stop()) {
|
|
schedule();
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
}
|
|
set_current_state(TASK_RUNNING);
|
|
|
|
/* check if we have blocked requests that need to free */
|
|
/* Note that cifs_max_pending is normally 50, but
|
|
can be set at module install time to as little as two */
|
|
spin_lock(&GlobalMid_Lock);
|
|
if (atomic_read(&server->inFlight) >= cifs_max_pending)
|
|
atomic_set(&server->inFlight, cifs_max_pending - 1);
|
|
/* We do not want to set the max_pending too low or we
|
|
could end up with the counter going negative */
|
|
spin_unlock(&GlobalMid_Lock);
|
|
/* Although there should not be any requests blocked on
|
|
this queue it can not hurt to be paranoid and try to wake up requests
|
|
that may haven been blocked when more than 50 at time were on the wire
|
|
to the same server - they now will see the session is in exit state
|
|
and get out of SendReceive. */
|
|
wake_up_all(&server->request_q);
|
|
/* give those requests time to exit */
|
|
msleep(125);
|
|
|
|
if (server->ssocket) {
|
|
sock_release(csocket);
|
|
server->ssocket = NULL;
|
|
}
|
|
/* buffer usuallly freed in free_mid - need to free it here on exit */
|
|
cifs_buf_release(bigbuf);
|
|
if (smallbuf) /* no sense logging a debug message if NULL */
|
|
cifs_small_buf_release(smallbuf);
|
|
|
|
read_lock(&GlobalSMBSeslock);
|
|
if (list_empty(&server->pending_mid_q)) {
|
|
/* loop through server session structures attached to this and
|
|
mark them dead */
|
|
list_for_each(tmp, &GlobalSMBSessionList) {
|
|
ses =
|
|
list_entry(tmp, struct cifsSesInfo,
|
|
cifsSessionList);
|
|
if (ses->server == server) {
|
|
ses->status = CifsExiting;
|
|
ses->server = NULL;
|
|
}
|
|
}
|
|
read_unlock(&GlobalSMBSeslock);
|
|
} else {
|
|
/* although we can not zero the server struct pointer yet,
|
|
since there are active requests which may depnd on them,
|
|
mark the corresponding SMB sessions as exiting too */
|
|
list_for_each(tmp, &GlobalSMBSessionList) {
|
|
ses = list_entry(tmp, struct cifsSesInfo,
|
|
cifsSessionList);
|
|
if (ses->server == server)
|
|
ses->status = CifsExiting;
|
|
}
|
|
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_for_each(tmp, &server->pending_mid_q) {
|
|
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
|
|
if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
|
|
cFYI(1, ("Clearing Mid 0x%x - waking up ",
|
|
mid_entry->mid));
|
|
task_to_wake = mid_entry->tsk;
|
|
if (task_to_wake)
|
|
wake_up_process(task_to_wake);
|
|
}
|
|
}
|
|
spin_unlock(&GlobalMid_Lock);
|
|
read_unlock(&GlobalSMBSeslock);
|
|
/* 1/8th of sec is more than enough time for them to exit */
|
|
msleep(125);
|
|
}
|
|
|
|
if (!list_empty(&server->pending_mid_q)) {
|
|
/* mpx threads have not exited yet give them
|
|
at least the smb send timeout time for long ops */
|
|
/* due to delays on oplock break requests, we need
|
|
to wait at least 45 seconds before giving up
|
|
on a request getting a response and going ahead
|
|
and killing cifsd */
|
|
cFYI(1, ("Wait for exit from demultiplex thread"));
|
|
msleep(46000);
|
|
/* if threads still have not exited they are probably never
|
|
coming home not much else we can do but free the memory */
|
|
}
|
|
|
|
/* last chance to mark ses pointers invalid
|
|
if there are any pointing to this (e.g
|
|
if a crazy root user tried to kill cifsd
|
|
kernel thread explicitly this might happen) */
|
|
write_lock(&GlobalSMBSeslock);
|
|
list_for_each(tmp, &GlobalSMBSessionList) {
|
|
ses = list_entry(tmp, struct cifsSesInfo,
|
|
cifsSessionList);
|
|
if (ses->server == server)
|
|
ses->server = NULL;
|
|
}
|
|
write_unlock(&GlobalSMBSeslock);
|
|
|
|
kfree(server->hostname);
|
|
kfree(server);
|
|
|
|
length = atomic_dec_return(&tcpSesAllocCount);
|
|
if (length > 0)
|
|
mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
|
|
GFP_KERNEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* extract the host portion of the UNC string */
|
|
static char *
|
|
extract_hostname(const char *unc)
|
|
{
|
|
const char *src;
|
|
char *dst, *delim;
|
|
unsigned int len;
|
|
|
|
/* skip double chars at beginning of string */
|
|
/* BB: check validity of these bytes? */
|
|
src = unc + 2;
|
|
|
|
/* delimiter between hostname and sharename is always '\\' now */
|
|
delim = strchr(src, '\\');
|
|
if (!delim)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
len = delim - src;
|
|
dst = kmalloc((len + 1), GFP_KERNEL);
|
|
if (dst == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
memcpy(dst, src, len);
|
|
dst[len] = '\0';
|
|
|
|
return dst;
|
|
}
|
|
|
|
static int
|
|
cifs_parse_mount_options(char *options, const char *devname,
|
|
struct smb_vol *vol)
|
|
{
|
|
char *value;
|
|
char *data;
|
|
unsigned int temp_len, i, j;
|
|
char separator[2];
|
|
|
|
separator[0] = ',';
|
|
separator[1] = 0;
|
|
|
|
if (Local_System_Name[0] != 0)
|
|
memcpy(vol->source_rfc1001_name, Local_System_Name, 15);
|
|
else {
|
|
char *nodename = utsname()->nodename;
|
|
int n = strnlen(nodename, 15);
|
|
memset(vol->source_rfc1001_name, 0x20, 15);
|
|
for (i = 0; i < n; i++) {
|
|
/* does not have to be perfect mapping since field is
|
|
informational, only used for servers that do not support
|
|
port 445 and it can be overridden at mount time */
|
|
vol->source_rfc1001_name[i] = toupper(nodename[i]);
|
|
}
|
|
}
|
|
vol->source_rfc1001_name[15] = 0;
|
|
/* null target name indicates to use *SMBSERVR default called name
|
|
if we end up sending RFC1001 session initialize */
|
|
vol->target_rfc1001_name[0] = 0;
|
|
vol->linux_uid = current->uid; /* current->euid instead? */
|
|
vol->linux_gid = current->gid;
|
|
vol->dir_mode = S_IRWXUGO;
|
|
/* 2767 perms indicate mandatory locking support */
|
|
vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP);
|
|
|
|
/* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */
|
|
vol->rw = true;
|
|
/* default is always to request posix paths. */
|
|
vol->posix_paths = 1;
|
|
|
|
if (!options)
|
|
return 1;
|
|
|
|
if (strncmp(options, "sep=", 4) == 0) {
|
|
if (options[4] != 0) {
|
|
separator[0] = options[4];
|
|
options += 5;
|
|
} else {
|
|
cFYI(1, ("Null separator not allowed"));
|
|
}
|
|
}
|
|
|
|
while ((data = strsep(&options, separator)) != NULL) {
|
|
if (!*data)
|
|
continue;
|
|
if ((value = strchr(data, '=')) != NULL)
|
|
*value++ = '\0';
|
|
|
|
/* Have to parse this before we parse for "user" */
|
|
if (strnicmp(data, "user_xattr", 10) == 0) {
|
|
vol->no_xattr = 0;
|
|
} else if (strnicmp(data, "nouser_xattr", 12) == 0) {
|
|
vol->no_xattr = 1;
|
|
} else if (strnicmp(data, "user", 4) == 0) {
|
|
if (!value) {
|
|
printk(KERN_WARNING
|
|
"CIFS: invalid or missing username\n");
|
|
return 1; /* needs_arg; */
|
|
} else if (!*value) {
|
|
/* null user, ie anonymous, authentication */
|
|
vol->nullauth = 1;
|
|
}
|
|
if (strnlen(value, 200) < 200) {
|
|
vol->username = value;
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: username too long\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "pass", 4) == 0) {
|
|
if (!value) {
|
|
vol->password = NULL;
|
|
continue;
|
|
} else if (value[0] == 0) {
|
|
/* check if string begins with double comma
|
|
since that would mean the password really
|
|
does start with a comma, and would not
|
|
indicate an empty string */
|
|
if (value[1] != separator[0]) {
|
|
vol->password = NULL;
|
|
continue;
|
|
}
|
|
}
|
|
temp_len = strlen(value);
|
|
/* removed password length check, NTLM passwords
|
|
can be arbitrarily long */
|
|
|
|
/* if comma in password, the string will be
|
|
prematurely null terminated. Commas in password are
|
|
specified across the cifs mount interface by a double
|
|
comma ie ,, and a comma used as in other cases ie ','
|
|
as a parameter delimiter/separator is single and due
|
|
to the strsep above is temporarily zeroed. */
|
|
|
|
/* NB: password legally can have multiple commas and
|
|
the only illegal character in a password is null */
|
|
|
|
if ((value[temp_len] == 0) &&
|
|
(value[temp_len+1] == separator[0])) {
|
|
/* reinsert comma */
|
|
value[temp_len] = separator[0];
|
|
temp_len += 2; /* move after second comma */
|
|
while (value[temp_len] != 0) {
|
|
if (value[temp_len] == separator[0]) {
|
|
if (value[temp_len+1] ==
|
|
separator[0]) {
|
|
/* skip second comma */
|
|
temp_len++;
|
|
} else {
|
|
/* single comma indicating start
|
|
of next parm */
|
|
break;
|
|
}
|
|
}
|
|
temp_len++;
|
|
}
|
|
if (value[temp_len] == 0) {
|
|
options = NULL;
|
|
} else {
|
|
value[temp_len] = 0;
|
|
/* point option to start of next parm */
|
|
options = value + temp_len + 1;
|
|
}
|
|
/* go from value to value + temp_len condensing
|
|
double commas to singles. Note that this ends up
|
|
allocating a few bytes too many, which is ok */
|
|
vol->password = kzalloc(temp_len, GFP_KERNEL);
|
|
if (vol->password == NULL) {
|
|
printk(KERN_WARNING "CIFS: no memory "
|
|
"for password\n");
|
|
return 1;
|
|
}
|
|
for (i = 0, j = 0; i < temp_len; i++, j++) {
|
|
vol->password[j] = value[i];
|
|
if (value[i] == separator[0]
|
|
&& value[i+1] == separator[0]) {
|
|
/* skip second comma */
|
|
i++;
|
|
}
|
|
}
|
|
vol->password[j] = 0;
|
|
} else {
|
|
vol->password = kzalloc(temp_len+1, GFP_KERNEL);
|
|
if (vol->password == NULL) {
|
|
printk(KERN_WARNING "CIFS: no memory "
|
|
"for password\n");
|
|
return 1;
|
|
}
|
|
strcpy(vol->password, value);
|
|
}
|
|
} else if (strnicmp(data, "ip", 2) == 0) {
|
|
if (!value || !*value) {
|
|
vol->UNCip = NULL;
|
|
} else if (strnlen(value, 35) < 35) {
|
|
vol->UNCip = value;
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: ip address "
|
|
"too long\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "sec", 3) == 0) {
|
|
if (!value || !*value) {
|
|
cERROR(1, ("no security value specified"));
|
|
continue;
|
|
} else if (strnicmp(value, "krb5i", 5) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_KRB5 |
|
|
CIFSSEC_MUST_SIGN;
|
|
} else if (strnicmp(value, "krb5p", 5) == 0) {
|
|
/* vol->secFlg |= CIFSSEC_MUST_SEAL |
|
|
CIFSSEC_MAY_KRB5; */
|
|
cERROR(1, ("Krb5 cifs privacy not supported"));
|
|
return 1;
|
|
} else if (strnicmp(value, "krb5", 4) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_KRB5;
|
|
} else if (strnicmp(value, "ntlmv2i", 7) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_NTLMV2 |
|
|
CIFSSEC_MUST_SIGN;
|
|
} else if (strnicmp(value, "ntlmv2", 6) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_NTLMV2;
|
|
} else if (strnicmp(value, "ntlmi", 5) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_NTLM |
|
|
CIFSSEC_MUST_SIGN;
|
|
} else if (strnicmp(value, "ntlm", 4) == 0) {
|
|
/* ntlm is default so can be turned off too */
|
|
vol->secFlg |= CIFSSEC_MAY_NTLM;
|
|
} else if (strnicmp(value, "nontlm", 6) == 0) {
|
|
/* BB is there a better way to do this? */
|
|
vol->secFlg |= CIFSSEC_MAY_NTLMV2;
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
} else if (strnicmp(value, "lanman", 6) == 0) {
|
|
vol->secFlg |= CIFSSEC_MAY_LANMAN;
|
|
#endif
|
|
} else if (strnicmp(value, "none", 4) == 0) {
|
|
vol->nullauth = 1;
|
|
} else {
|
|
cERROR(1, ("bad security option: %s", value));
|
|
return 1;
|
|
}
|
|
} else if ((strnicmp(data, "unc", 3) == 0)
|
|
|| (strnicmp(data, "target", 6) == 0)
|
|
|| (strnicmp(data, "path", 4) == 0)) {
|
|
if (!value || !*value) {
|
|
printk(KERN_WARNING "CIFS: invalid path to "
|
|
"network resource\n");
|
|
return 1; /* needs_arg; */
|
|
}
|
|
if ((temp_len = strnlen(value, 300)) < 300) {
|
|
vol->UNC = kmalloc(temp_len+1, GFP_KERNEL);
|
|
if (vol->UNC == NULL)
|
|
return 1;
|
|
strcpy(vol->UNC, value);
|
|
if (strncmp(vol->UNC, "//", 2) == 0) {
|
|
vol->UNC[0] = '\\';
|
|
vol->UNC[1] = '\\';
|
|
} else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
|
|
printk(KERN_WARNING
|
|
"CIFS: UNC Path does not begin "
|
|
"with // or \\\\ \n");
|
|
return 1;
|
|
}
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: UNC name too long\n");
|
|
return 1;
|
|
}
|
|
} else if ((strnicmp(data, "domain", 3) == 0)
|
|
|| (strnicmp(data, "workgroup", 5) == 0)) {
|
|
if (!value || !*value) {
|
|
printk(KERN_WARNING "CIFS: invalid domain name\n");
|
|
return 1; /* needs_arg; */
|
|
}
|
|
/* BB are there cases in which a comma can be valid in
|
|
a domain name and need special handling? */
|
|
if (strnlen(value, 256) < 256) {
|
|
vol->domainname = value;
|
|
cFYI(1, ("Domain name set"));
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: domain name too "
|
|
"long\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "prefixpath", 10) == 0) {
|
|
if (!value || !*value) {
|
|
printk(KERN_WARNING
|
|
"CIFS: invalid path prefix\n");
|
|
return 1; /* needs_argument */
|
|
}
|
|
if ((temp_len = strnlen(value, 1024)) < 1024) {
|
|
if (value[0] != '/')
|
|
temp_len++; /* missing leading slash */
|
|
vol->prepath = kmalloc(temp_len+1, GFP_KERNEL);
|
|
if (vol->prepath == NULL)
|
|
return 1;
|
|
if (value[0] != '/') {
|
|
vol->prepath[0] = '/';
|
|
strcpy(vol->prepath+1, value);
|
|
} else
|
|
strcpy(vol->prepath, value);
|
|
cFYI(1, ("prefix path %s", vol->prepath));
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: prefix too long\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "iocharset", 9) == 0) {
|
|
if (!value || !*value) {
|
|
printk(KERN_WARNING "CIFS: invalid iocharset "
|
|
"specified\n");
|
|
return 1; /* needs_arg; */
|
|
}
|
|
if (strnlen(value, 65) < 65) {
|
|
if (strnicmp(value, "default", 7))
|
|
vol->iocharset = value;
|
|
/* if iocharset not set then load_nls_default
|
|
is used by caller */
|
|
cFYI(1, ("iocharset set to %s", value));
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: iocharset name "
|
|
"too long.\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "uid", 3) == 0) {
|
|
if (value && *value) {
|
|
vol->linux_uid =
|
|
simple_strtoul(value, &value, 0);
|
|
vol->override_uid = 1;
|
|
}
|
|
} else if (strnicmp(data, "gid", 3) == 0) {
|
|
if (value && *value) {
|
|
vol->linux_gid =
|
|
simple_strtoul(value, &value, 0);
|
|
vol->override_gid = 1;
|
|
}
|
|
} else if (strnicmp(data, "file_mode", 4) == 0) {
|
|
if (value && *value) {
|
|
vol->file_mode =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "dir_mode", 4) == 0) {
|
|
if (value && *value) {
|
|
vol->dir_mode =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "dirmode", 4) == 0) {
|
|
if (value && *value) {
|
|
vol->dir_mode =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "port", 4) == 0) {
|
|
if (value && *value) {
|
|
vol->port =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "rsize", 5) == 0) {
|
|
if (value && *value) {
|
|
vol->rsize =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "wsize", 5) == 0) {
|
|
if (value && *value) {
|
|
vol->wsize =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "sockopt", 5) == 0) {
|
|
if (value && *value) {
|
|
vol->sockopt =
|
|
simple_strtoul(value, &value, 0);
|
|
}
|
|
} else if (strnicmp(data, "netbiosname", 4) == 0) {
|
|
if (!value || !*value || (*value == ' ')) {
|
|
cFYI(1, ("invalid (empty) netbiosname"));
|
|
} else {
|
|
memset(vol->source_rfc1001_name, 0x20, 15);
|
|
for (i = 0; i < 15; i++) {
|
|
/* BB are there cases in which a comma can be
|
|
valid in this workstation netbios name (and need
|
|
special handling)? */
|
|
|
|
/* We do not uppercase netbiosname for user */
|
|
if (value[i] == 0)
|
|
break;
|
|
else
|
|
vol->source_rfc1001_name[i] =
|
|
value[i];
|
|
}
|
|
/* The string has 16th byte zero still from
|
|
set at top of the function */
|
|
if ((i == 15) && (value[i] != 0))
|
|
printk(KERN_WARNING "CIFS: netbiosname"
|
|
" longer than 15 truncated.\n");
|
|
}
|
|
} else if (strnicmp(data, "servern", 7) == 0) {
|
|
/* servernetbiosname specified override *SMBSERVER */
|
|
if (!value || !*value || (*value == ' ')) {
|
|
cFYI(1, ("empty server netbiosname specified"));
|
|
} else {
|
|
/* last byte, type, is 0x20 for servr type */
|
|
memset(vol->target_rfc1001_name, 0x20, 16);
|
|
|
|
for (i = 0; i < 15; i++) {
|
|
/* BB are there cases in which a comma can be
|
|
valid in this workstation netbios name
|
|
(and need special handling)? */
|
|
|
|
/* user or mount helper must uppercase
|
|
the netbiosname */
|
|
if (value[i] == 0)
|
|
break;
|
|
else
|
|
vol->target_rfc1001_name[i] =
|
|
value[i];
|
|
}
|
|
/* The string has 16th byte zero still from
|
|
set at top of the function */
|
|
if ((i == 15) && (value[i] != 0))
|
|
printk(KERN_WARNING "CIFS: server net"
|
|
"biosname longer than 15 truncated.\n");
|
|
}
|
|
} else if (strnicmp(data, "credentials", 4) == 0) {
|
|
/* ignore */
|
|
} else if (strnicmp(data, "version", 3) == 0) {
|
|
/* ignore */
|
|
} else if (strnicmp(data, "guest", 5) == 0) {
|
|
/* ignore */
|
|
} else if (strnicmp(data, "rw", 2) == 0) {
|
|
vol->rw = true;
|
|
} else if ((strnicmp(data, "suid", 4) == 0) ||
|
|
(strnicmp(data, "nosuid", 6) == 0) ||
|
|
(strnicmp(data, "exec", 4) == 0) ||
|
|
(strnicmp(data, "noexec", 6) == 0) ||
|
|
(strnicmp(data, "nodev", 5) == 0) ||
|
|
(strnicmp(data, "noauto", 6) == 0) ||
|
|
(strnicmp(data, "dev", 3) == 0)) {
|
|
/* The mount tool or mount.cifs helper (if present)
|
|
uses these opts to set flags, and the flags are read
|
|
by the kernel vfs layer before we get here (ie
|
|
before read super) so there is no point trying to
|
|
parse these options again and set anything and it
|
|
is ok to just ignore them */
|
|
continue;
|
|
} else if (strnicmp(data, "ro", 2) == 0) {
|
|
vol->rw = false;
|
|
} else if (strnicmp(data, "hard", 4) == 0) {
|
|
vol->retry = 1;
|
|
} else if (strnicmp(data, "soft", 4) == 0) {
|
|
vol->retry = 0;
|
|
} else if (strnicmp(data, "perm", 4) == 0) {
|
|
vol->noperm = 0;
|
|
} else if (strnicmp(data, "noperm", 6) == 0) {
|
|
vol->noperm = 1;
|
|
} else if (strnicmp(data, "mapchars", 8) == 0) {
|
|
vol->remap = 1;
|
|
} else if (strnicmp(data, "nomapchars", 10) == 0) {
|
|
vol->remap = 0;
|
|
} else if (strnicmp(data, "sfu", 3) == 0) {
|
|
vol->sfu_emul = 1;
|
|
} else if (strnicmp(data, "nosfu", 5) == 0) {
|
|
vol->sfu_emul = 0;
|
|
} else if (strnicmp(data, "posixpaths", 10) == 0) {
|
|
vol->posix_paths = 1;
|
|
} else if (strnicmp(data, "noposixpaths", 12) == 0) {
|
|
vol->posix_paths = 0;
|
|
} else if (strnicmp(data, "nounix", 6) == 0) {
|
|
vol->no_linux_ext = 1;
|
|
} else if (strnicmp(data, "nolinux", 7) == 0) {
|
|
vol->no_linux_ext = 1;
|
|
} else if ((strnicmp(data, "nocase", 6) == 0) ||
|
|
(strnicmp(data, "ignorecase", 10) == 0)) {
|
|
vol->nocase = 1;
|
|
} else if (strnicmp(data, "brl", 3) == 0) {
|
|
vol->nobrl = 0;
|
|
} else if ((strnicmp(data, "nobrl", 5) == 0) ||
|
|
(strnicmp(data, "nolock", 6) == 0)) {
|
|
vol->nobrl = 1;
|
|
/* turn off mandatory locking in mode
|
|
if remote locking is turned off since the
|
|
local vfs will do advisory */
|
|
if (vol->file_mode ==
|
|
(S_IALLUGO & ~(S_ISUID | S_IXGRP)))
|
|
vol->file_mode = S_IALLUGO;
|
|
} else if (strnicmp(data, "setuids", 7) == 0) {
|
|
vol->setuids = 1;
|
|
} else if (strnicmp(data, "nosetuids", 9) == 0) {
|
|
vol->setuids = 0;
|
|
} else if (strnicmp(data, "dynperm", 7) == 0) {
|
|
vol->dynperm = true;
|
|
} else if (strnicmp(data, "nodynperm", 9) == 0) {
|
|
vol->dynperm = false;
|
|
} else if (strnicmp(data, "nohard", 6) == 0) {
|
|
vol->retry = 0;
|
|
} else if (strnicmp(data, "nosoft", 6) == 0) {
|
|
vol->retry = 1;
|
|
} else if (strnicmp(data, "nointr", 6) == 0) {
|
|
vol->intr = 0;
|
|
} else if (strnicmp(data, "intr", 4) == 0) {
|
|
vol->intr = 1;
|
|
} else if (strnicmp(data, "serverino", 7) == 0) {
|
|
vol->server_ino = 1;
|
|
} else if (strnicmp(data, "noserverino", 9) == 0) {
|
|
vol->server_ino = 0;
|
|
} else if (strnicmp(data, "cifsacl", 7) == 0) {
|
|
vol->cifs_acl = 1;
|
|
} else if (strnicmp(data, "nocifsacl", 9) == 0) {
|
|
vol->cifs_acl = 0;
|
|
} else if (strnicmp(data, "acl", 3) == 0) {
|
|
vol->no_psx_acl = 0;
|
|
} else if (strnicmp(data, "noacl", 5) == 0) {
|
|
vol->no_psx_acl = 1;
|
|
} else if (strnicmp(data, "sign", 4) == 0) {
|
|
vol->secFlg |= CIFSSEC_MUST_SIGN;
|
|
} else if (strnicmp(data, "seal", 4) == 0) {
|
|
/* we do not do the following in secFlags because seal
|
|
is a per tree connection (mount) not a per socket
|
|
or per-smb connection option in the protocol */
|
|
/* vol->secFlg |= CIFSSEC_MUST_SEAL; */
|
|
vol->seal = 1;
|
|
} else if (strnicmp(data, "direct", 6) == 0) {
|
|
vol->direct_io = 1;
|
|
} else if (strnicmp(data, "forcedirectio", 13) == 0) {
|
|
vol->direct_io = 1;
|
|
} else if (strnicmp(data, "in6_addr", 8) == 0) {
|
|
if (!value || !*value) {
|
|
vol->in6_addr = NULL;
|
|
} else if (strnlen(value, 49) == 48) {
|
|
vol->in6_addr = value;
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: ip v6 address not "
|
|
"48 characters long\n");
|
|
return 1;
|
|
}
|
|
} else if (strnicmp(data, "noac", 4) == 0) {
|
|
printk(KERN_WARNING "CIFS: Mount option noac not "
|
|
"supported. Instead set "
|
|
"/proc/fs/cifs/LookupCacheEnabled to 0\n");
|
|
} else
|
|
printk(KERN_WARNING "CIFS: Unknown mount option %s\n",
|
|
data);
|
|
}
|
|
if (vol->UNC == NULL) {
|
|
if (devname == NULL) {
|
|
printk(KERN_WARNING "CIFS: Missing UNC name for mount "
|
|
"target\n");
|
|
return 1;
|
|
}
|
|
if ((temp_len = strnlen(devname, 300)) < 300) {
|
|
vol->UNC = kmalloc(temp_len+1, GFP_KERNEL);
|
|
if (vol->UNC == NULL)
|
|
return 1;
|
|
strcpy(vol->UNC, devname);
|
|
if (strncmp(vol->UNC, "//", 2) == 0) {
|
|
vol->UNC[0] = '\\';
|
|
vol->UNC[1] = '\\';
|
|
} else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
|
|
printk(KERN_WARNING "CIFS: UNC Path does not "
|
|
"begin with // or \\\\ \n");
|
|
return 1;
|
|
}
|
|
value = strpbrk(vol->UNC+2, "/\\");
|
|
if (value)
|
|
*value = '\\';
|
|
} else {
|
|
printk(KERN_WARNING "CIFS: UNC name too long\n");
|
|
return 1;
|
|
}
|
|
}
|
|
if (vol->UNCip == NULL)
|
|
vol->UNCip = &vol->UNC[2];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct cifsSesInfo *
|
|
cifs_find_tcp_session(struct in_addr *target_ip_addr,
|
|
struct in6_addr *target_ip6_addr,
|
|
char *userName, struct TCP_Server_Info **psrvTcp)
|
|
{
|
|
struct list_head *tmp;
|
|
struct cifsSesInfo *ses;
|
|
|
|
*psrvTcp = NULL;
|
|
|
|
read_lock(&GlobalSMBSeslock);
|
|
list_for_each(tmp, &GlobalSMBSessionList) {
|
|
ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
|
|
if (!ses->server)
|
|
continue;
|
|
|
|
if (target_ip_addr &&
|
|
ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
|
|
continue;
|
|
else if (target_ip6_addr &&
|
|
memcmp(&ses->server->addr.sockAddr6.sin6_addr,
|
|
target_ip6_addr, sizeof(*target_ip6_addr)))
|
|
continue;
|
|
/* BB lock server and tcp session; increment use count here?? */
|
|
|
|
/* found a match on the TCP session */
|
|
*psrvTcp = ses->server;
|
|
|
|
/* BB check if reconnection needed */
|
|
if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
|
|
read_unlock(&GlobalSMBSeslock);
|
|
/* Found exact match on both TCP and
|
|
SMB sessions */
|
|
return ses;
|
|
}
|
|
/* else tcp and smb sessions need reconnection */
|
|
}
|
|
read_unlock(&GlobalSMBSeslock);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct cifsTconInfo *
|
|
find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
|
|
{
|
|
struct list_head *tmp;
|
|
struct cifsTconInfo *tcon;
|
|
__be32 old_ip;
|
|
|
|
read_lock(&GlobalSMBSeslock);
|
|
|
|
list_for_each(tmp, &GlobalTreeConnectionList) {
|
|
cFYI(1, ("Next tcon"));
|
|
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
|
|
if (!tcon->ses || !tcon->ses->server)
|
|
continue;
|
|
|
|
old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr;
|
|
cFYI(1, ("old ip addr: %x == new ip %x ?",
|
|
old_ip, new_target_ip_addr));
|
|
|
|
if (old_ip != new_target_ip_addr)
|
|
continue;
|
|
|
|
/* BB lock tcon, server, tcp session and increment use count? */
|
|
/* found a match on the TCP session */
|
|
/* BB check if reconnection needed */
|
|
cFYI(1, ("IP match, old UNC: %s new: %s",
|
|
tcon->treeName, uncName));
|
|
|
|
if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE))
|
|
continue;
|
|
|
|
cFYI(1, ("and old usr: %s new: %s",
|
|
tcon->treeName, uncName));
|
|
|
|
if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE))
|
|
continue;
|
|
|
|
/* matched smb session (user name) */
|
|
read_unlock(&GlobalSMBSeslock);
|
|
return tcon;
|
|
}
|
|
|
|
read_unlock(&GlobalSMBSeslock);
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
|
|
const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
|
|
struct dfs_info3_param **preferrals, int remap)
|
|
{
|
|
char *temp_unc;
|
|
int rc = 0;
|
|
|
|
*pnum_referrals = 0;
|
|
*preferrals = NULL;
|
|
|
|
if (pSesInfo->ipc_tid == 0) {
|
|
temp_unc = kmalloc(2 /* for slashes */ +
|
|
strnlen(pSesInfo->serverName,
|
|
SERVER_NAME_LEN_WITH_NULL * 2)
|
|
+ 1 + 4 /* slash IPC$ */ + 2,
|
|
GFP_KERNEL);
|
|
if (temp_unc == NULL)
|
|
return -ENOMEM;
|
|
temp_unc[0] = '\\';
|
|
temp_unc[1] = '\\';
|
|
strcpy(temp_unc + 2, pSesInfo->serverName);
|
|
strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$");
|
|
rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage);
|
|
cFYI(1,
|
|
("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid));
|
|
kfree(temp_unc);
|
|
}
|
|
if (rc == 0)
|
|
rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals,
|
|
pnum_referrals, nls_codepage, remap);
|
|
/* BB map targetUNCs to dfs_info3 structures, here or
|
|
in CIFSGetDFSRefer BB */
|
|
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
|
static struct lock_class_key cifs_key[2];
|
|
static struct lock_class_key cifs_slock_key[2];
|
|
|
|
static inline void
|
|
cifs_reclassify_socket4(struct socket *sock)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
BUG_ON(sock_owned_by_user(sk));
|
|
sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS",
|
|
&cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]);
|
|
}
|
|
|
|
static inline void
|
|
cifs_reclassify_socket6(struct socket *sock)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
BUG_ON(sock_owned_by_user(sk));
|
|
sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS",
|
|
&cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]);
|
|
}
|
|
#else
|
|
static inline void
|
|
cifs_reclassify_socket4(struct socket *sock)
|
|
{
|
|
}
|
|
|
|
static inline void
|
|
cifs_reclassify_socket6(struct socket *sock)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* See RFC1001 section 14 on representation of Netbios names */
|
|
static void rfc1002mangle(char *target, char *source, unsigned int length)
|
|
{
|
|
unsigned int i, j;
|
|
|
|
for (i = 0, j = 0; i < (length); i++) {
|
|
/* mask a nibble at a time and encode */
|
|
target[j] = 'A' + (0x0F & (source[i] >> 4));
|
|
target[j+1] = 'A' + (0x0F & source[i]);
|
|
j += 2;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
static int
|
|
ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
|
|
char *netbios_name, char *target_name)
|
|
{
|
|
int rc = 0;
|
|
int connected = 0;
|
|
__be16 orig_port = 0;
|
|
|
|
if (*csocket == NULL) {
|
|
rc = sock_create_kern(PF_INET, SOCK_STREAM,
|
|
IPPROTO_TCP, csocket);
|
|
if (rc < 0) {
|
|
cERROR(1, ("Error %d creating socket", rc));
|
|
*csocket = NULL;
|
|
return rc;
|
|
} else {
|
|
/* BB other socket options to set KEEPALIVE, NODELAY? */
|
|
cFYI(1, ("Socket created"));
|
|
(*csocket)->sk->sk_allocation = GFP_NOFS;
|
|
cifs_reclassify_socket4(*csocket);
|
|
}
|
|
}
|
|
|
|
psin_server->sin_family = AF_INET;
|
|
if (psin_server->sin_port) { /* user overrode default port */
|
|
rc = (*csocket)->ops->connect(*csocket,
|
|
(struct sockaddr *) psin_server,
|
|
sizeof(struct sockaddr_in), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
|
|
if (!connected) {
|
|
/* save original port so we can retry user specified port
|
|
later if fall back ports fail this time */
|
|
orig_port = psin_server->sin_port;
|
|
|
|
/* do not retry on the same port we just failed on */
|
|
if (psin_server->sin_port != htons(CIFS_PORT)) {
|
|
psin_server->sin_port = htons(CIFS_PORT);
|
|
|
|
rc = (*csocket)->ops->connect(*csocket,
|
|
(struct sockaddr *) psin_server,
|
|
sizeof(struct sockaddr_in), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
}
|
|
if (!connected) {
|
|
psin_server->sin_port = htons(RFC1001_PORT);
|
|
rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
|
|
psin_server,
|
|
sizeof(struct sockaddr_in), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
|
|
/* give up here - unless we want to retry on different
|
|
protocol families some day */
|
|
if (!connected) {
|
|
if (orig_port)
|
|
psin_server->sin_port = orig_port;
|
|
cFYI(1, ("Error %d connecting to server via ipv4", rc));
|
|
sock_release(*csocket);
|
|
*csocket = NULL;
|
|
return rc;
|
|
}
|
|
/* Eventually check for other socket options to change from
|
|
the default. sock_setsockopt not used because it expects
|
|
user space buffer */
|
|
cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
|
|
(*csocket)->sk->sk_sndbuf,
|
|
(*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
|
|
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
|
|
/* make the bufsizes depend on wsize/rsize and max requests */
|
|
if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
|
|
(*csocket)->sk->sk_sndbuf = 200 * 1024;
|
|
if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
|
|
(*csocket)->sk->sk_rcvbuf = 140 * 1024;
|
|
|
|
/* send RFC1001 sessinit */
|
|
if (psin_server->sin_port == htons(RFC1001_PORT)) {
|
|
/* some servers require RFC1001 sessinit before sending
|
|
negprot - BB check reconnection in case where second
|
|
sessinit is sent but no second negprot */
|
|
struct rfc1002_session_packet *ses_init_buf;
|
|
struct smb_hdr *smb_buf;
|
|
ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet),
|
|
GFP_KERNEL);
|
|
if (ses_init_buf) {
|
|
ses_init_buf->trailer.session_req.called_len = 32;
|
|
if (target_name && (target_name[0] != 0)) {
|
|
rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
|
|
target_name, 16);
|
|
} else {
|
|
rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
|
|
DEFAULT_CIFS_CALLED_NAME, 16);
|
|
}
|
|
|
|
ses_init_buf->trailer.session_req.calling_len = 32;
|
|
/* calling name ends in null (byte 16) from old smb
|
|
convention. */
|
|
if (netbios_name && (netbios_name[0] != 0)) {
|
|
rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
|
|
netbios_name, 16);
|
|
} else {
|
|
rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
|
|
"LINUX_CIFS_CLNT", 16);
|
|
}
|
|
ses_init_buf->trailer.session_req.scope1 = 0;
|
|
ses_init_buf->trailer.session_req.scope2 = 0;
|
|
smb_buf = (struct smb_hdr *)ses_init_buf;
|
|
/* sizeof RFC1002_SESSION_REQUEST with no scope */
|
|
smb_buf->smb_buf_length = 0x81000044;
|
|
rc = smb_send(*csocket, smb_buf, 0x44,
|
|
(struct sockaddr *)psin_server);
|
|
kfree(ses_init_buf);
|
|
msleep(1); /* RFC1001 layer in at least one server
|
|
requires very short break before negprot
|
|
presumably because not expecting negprot
|
|
to follow so fast. This is a simple
|
|
solution that works without
|
|
complicating the code and causes no
|
|
significant slowing down on mount
|
|
for everyone else */
|
|
}
|
|
/* else the negprot may still work without this
|
|
even though malloc failed */
|
|
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
|
|
{
|
|
int rc = 0;
|
|
int connected = 0;
|
|
__be16 orig_port = 0;
|
|
|
|
if (*csocket == NULL) {
|
|
rc = sock_create_kern(PF_INET6, SOCK_STREAM,
|
|
IPPROTO_TCP, csocket);
|
|
if (rc < 0) {
|
|
cERROR(1, ("Error %d creating ipv6 socket", rc));
|
|
*csocket = NULL;
|
|
return rc;
|
|
} else {
|
|
/* BB other socket options to set KEEPALIVE, NODELAY? */
|
|
cFYI(1, ("ipv6 Socket created"));
|
|
(*csocket)->sk->sk_allocation = GFP_NOFS;
|
|
cifs_reclassify_socket6(*csocket);
|
|
}
|
|
}
|
|
|
|
psin_server->sin6_family = AF_INET6;
|
|
|
|
if (psin_server->sin6_port) { /* user overrode default port */
|
|
rc = (*csocket)->ops->connect(*csocket,
|
|
(struct sockaddr *) psin_server,
|
|
sizeof(struct sockaddr_in6), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
|
|
if (!connected) {
|
|
/* save original port so we can retry user specified port
|
|
later if fall back ports fail this time */
|
|
|
|
orig_port = psin_server->sin6_port;
|
|
/* do not retry on the same port we just failed on */
|
|
if (psin_server->sin6_port != htons(CIFS_PORT)) {
|
|
psin_server->sin6_port = htons(CIFS_PORT);
|
|
|
|
rc = (*csocket)->ops->connect(*csocket,
|
|
(struct sockaddr *) psin_server,
|
|
sizeof(struct sockaddr_in6), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
}
|
|
if (!connected) {
|
|
psin_server->sin6_port = htons(RFC1001_PORT);
|
|
rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
|
|
psin_server, sizeof(struct sockaddr_in6), 0);
|
|
if (rc >= 0)
|
|
connected = 1;
|
|
}
|
|
|
|
/* give up here - unless we want to retry on different
|
|
protocol families some day */
|
|
if (!connected) {
|
|
if (orig_port)
|
|
psin_server->sin6_port = orig_port;
|
|
cFYI(1, ("Error %d connecting to server via ipv6", rc));
|
|
sock_release(*csocket);
|
|
*csocket = NULL;
|
|
return rc;
|
|
}
|
|
/* Eventually check for other socket options to change from
|
|
the default. sock_setsockopt not used because it expects
|
|
user space buffer */
|
|
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
|
|
|
|
return rc;
|
|
}
|
|
|
|
void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
|
|
struct super_block *sb, struct smb_vol *vol_info)
|
|
{
|
|
/* if we are reconnecting then should we check to see if
|
|
* any requested capabilities changed locally e.g. via
|
|
* remount but we can not do much about it here
|
|
* if they have (even if we could detect it by the following)
|
|
* Perhaps we could add a backpointer to array of sb from tcon
|
|
* or if we change to make all sb to same share the same
|
|
* sb as NFS - then we only have one backpointer to sb.
|
|
* What if we wanted to mount the server share twice once with
|
|
* and once without posixacls or posix paths? */
|
|
__u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
|
|
|
|
if (vol_info && vol_info->no_linux_ext) {
|
|
tcon->fsUnixInfo.Capability = 0;
|
|
tcon->unix_ext = 0; /* Unix Extensions disabled */
|
|
cFYI(1, ("Linux protocol extensions disabled"));
|
|
return;
|
|
} else if (vol_info)
|
|
tcon->unix_ext = 1; /* Unix Extensions supported */
|
|
|
|
if (tcon->unix_ext == 0) {
|
|
cFYI(1, ("Unix extensions disabled so not set on reconnect"));
|
|
return;
|
|
}
|
|
|
|
if (!CIFSSMBQFSUnixInfo(xid, tcon)) {
|
|
__u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
|
|
|
|
/* check for reconnect case in which we do not
|
|
want to change the mount behavior if we can avoid it */
|
|
if (vol_info == NULL) {
|
|
/* turn off POSIX ACL and PATHNAMES if not set
|
|
originally at mount time */
|
|
if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0)
|
|
cap &= ~CIFS_UNIX_POSIX_ACL_CAP;
|
|
if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) {
|
|
if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP)
|
|
cERROR(1, ("POSIXPATH support change"));
|
|
cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP;
|
|
} else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) {
|
|
cERROR(1, ("possible reconnect error"));
|
|
cERROR(1,
|
|
("server disabled POSIX path support"));
|
|
}
|
|
}
|
|
|
|
cap &= CIFS_UNIX_CAP_MASK;
|
|
if (vol_info && vol_info->no_psx_acl)
|
|
cap &= ~CIFS_UNIX_POSIX_ACL_CAP;
|
|
else if (CIFS_UNIX_POSIX_ACL_CAP & cap) {
|
|
cFYI(1, ("negotiated posix acl support"));
|
|
if (sb)
|
|
sb->s_flags |= MS_POSIXACL;
|
|
}
|
|
|
|
if (vol_info && vol_info->posix_paths == 0)
|
|
cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP;
|
|
else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) {
|
|
cFYI(1, ("negotiate posix pathnames"));
|
|
if (sb)
|
|
CIFS_SB(sb)->mnt_cifs_flags |=
|
|
CIFS_MOUNT_POSIX_PATHS;
|
|
}
|
|
|
|
/* We might be setting the path sep back to a different
|
|
form if we are reconnecting and the server switched its
|
|
posix path capability for this share */
|
|
if (sb && (CIFS_SB(sb)->prepathlen > 0))
|
|
CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb));
|
|
|
|
if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) {
|
|
if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) {
|
|
CIFS_SB(sb)->rsize = 127 * 1024;
|
|
cFYI(DBG2,
|
|
("larger reads not supported by srv"));
|
|
}
|
|
}
|
|
|
|
|
|
cFYI(1, ("Negotiate caps 0x%x", (int)cap));
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
if (cap & CIFS_UNIX_FCNTL_CAP)
|
|
cFYI(1, ("FCNTL cap"));
|
|
if (cap & CIFS_UNIX_EXTATTR_CAP)
|
|
cFYI(1, ("EXTATTR cap"));
|
|
if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP)
|
|
cFYI(1, ("POSIX path cap"));
|
|
if (cap & CIFS_UNIX_XATTR_CAP)
|
|
cFYI(1, ("XATTR cap"));
|
|
if (cap & CIFS_UNIX_POSIX_ACL_CAP)
|
|
cFYI(1, ("POSIX ACL cap"));
|
|
if (cap & CIFS_UNIX_LARGE_READ_CAP)
|
|
cFYI(1, ("very large read cap"));
|
|
if (cap & CIFS_UNIX_LARGE_WRITE_CAP)
|
|
cFYI(1, ("very large write cap"));
|
|
#endif /* CIFS_DEBUG2 */
|
|
if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
|
|
if (vol_info == NULL) {
|
|
cFYI(1, ("resetting capabilities failed"));
|
|
} else
|
|
cERROR(1, ("Negotiating Unix capabilities "
|
|
"with the server failed. Consider "
|
|
"mounting with the Unix Extensions\n"
|
|
"disabled, if problems are found, "
|
|
"by specifying the nounix mount "
|
|
"option."));
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
convert_delimiter(char *path, char delim)
|
|
{
|
|
int i;
|
|
char old_delim;
|
|
|
|
if (path == NULL)
|
|
return;
|
|
|
|
if (delim == '/')
|
|
old_delim = '\\';
|
|
else
|
|
old_delim = '/';
|
|
|
|
for (i = 0; path[i] != '\0'; i++) {
|
|
if (path[i] == old_delim)
|
|
path[i] = delim;
|
|
}
|
|
}
|
|
|
|
int
|
|
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
|
|
char *mount_data, const char *devname)
|
|
{
|
|
int rc = 0;
|
|
int xid;
|
|
int address_type = AF_INET;
|
|
struct socket *csocket = NULL;
|
|
struct sockaddr_in sin_server;
|
|
struct sockaddr_in6 sin_server6;
|
|
struct smb_vol volume_info;
|
|
struct cifsSesInfo *pSesInfo = NULL;
|
|
struct cifsSesInfo *existingCifsSes = NULL;
|
|
struct cifsTconInfo *tcon = NULL;
|
|
struct TCP_Server_Info *srvTcp = NULL;
|
|
|
|
xid = GetXid();
|
|
|
|
/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
|
|
|
|
memset(&volume_info, 0, sizeof(struct smb_vol));
|
|
if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (volume_info.nullauth) {
|
|
cFYI(1, ("null user"));
|
|
volume_info.username = "";
|
|
} else if (volume_info.username) {
|
|
/* BB fixme parse for domain name here */
|
|
cFYI(1, ("Username: %s", volume_info.username));
|
|
} else {
|
|
cifserror("No username specified");
|
|
/* In userspace mount helper we can get user name from alternate
|
|
locations such as env variables and files on disk */
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (volume_info.UNCip && volume_info.UNC) {
|
|
rc = cifs_inet_pton(AF_INET, volume_info.UNCip,
|
|
&sin_server.sin_addr.s_addr);
|
|
|
|
if (rc <= 0) {
|
|
/* not ipv4 address, try ipv6 */
|
|
rc = cifs_inet_pton(AF_INET6, volume_info.UNCip,
|
|
&sin_server6.sin6_addr.in6_u);
|
|
if (rc > 0)
|
|
address_type = AF_INET6;
|
|
} else {
|
|
address_type = AF_INET;
|
|
}
|
|
|
|
if (rc <= 0) {
|
|
/* we failed translating address */
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip));
|
|
/* success */
|
|
rc = 0;
|
|
} else if (volume_info.UNCip) {
|
|
/* BB using ip addr as server name to connect to the
|
|
DFS root below */
|
|
cERROR(1, ("Connecting to DFS root not implemented yet"));
|
|
rc = -EINVAL;
|
|
goto out;
|
|
} else /* which servers DFS root would we conect to */ {
|
|
cERROR(1,
|
|
("CIFS mount error: No UNC path (e.g. -o "
|
|
"unc=//192.168.1.100/public) specified"));
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/* this is needed for ASCII cp to Unicode converts */
|
|
if (volume_info.iocharset == NULL) {
|
|
cifs_sb->local_nls = load_nls_default();
|
|
/* load_nls_default can not return null */
|
|
} else {
|
|
cifs_sb->local_nls = load_nls(volume_info.iocharset);
|
|
if (cifs_sb->local_nls == NULL) {
|
|
cERROR(1, ("CIFS mount error: iocharset %s not found",
|
|
volume_info.iocharset));
|
|
rc = -ELIBACC;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (address_type == AF_INET)
|
|
existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
|
|
NULL /* no ipv6 addr */,
|
|
volume_info.username, &srvTcp);
|
|
else if (address_type == AF_INET6) {
|
|
cFYI(1, ("looking for ipv6 address"));
|
|
existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
|
|
&sin_server6.sin6_addr,
|
|
volume_info.username, &srvTcp);
|
|
} else {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (srvTcp) {
|
|
cFYI(1, ("Existing tcp session with server found"));
|
|
} else { /* create socket */
|
|
if (volume_info.port)
|
|
sin_server.sin_port = htons(volume_info.port);
|
|
else
|
|
sin_server.sin_port = 0;
|
|
if (address_type == AF_INET6) {
|
|
cFYI(1, ("attempting ipv6 connect"));
|
|
/* BB should we allow ipv6 on port 139? */
|
|
/* other OS never observed in Wild doing 139 with v6 */
|
|
rc = ipv6_connect(&sin_server6, &csocket);
|
|
} else
|
|
rc = ipv4_connect(&sin_server, &csocket,
|
|
volume_info.source_rfc1001_name,
|
|
volume_info.target_rfc1001_name);
|
|
if (rc < 0) {
|
|
cERROR(1, ("Error connecting to IPv4 socket. "
|
|
"Aborting operation"));
|
|
if (csocket != NULL)
|
|
sock_release(csocket);
|
|
goto out;
|
|
}
|
|
|
|
srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL);
|
|
if (!srvTcp) {
|
|
rc = -ENOMEM;
|
|
sock_release(csocket);
|
|
goto out;
|
|
} else {
|
|
memcpy(&srvTcp->addr.sockAddr, &sin_server,
|
|
sizeof(struct sockaddr_in));
|
|
atomic_set(&srvTcp->inFlight, 0);
|
|
/* BB Add code for ipv6 case too */
|
|
srvTcp->ssocket = csocket;
|
|
srvTcp->protocolType = IPV4;
|
|
srvTcp->hostname = extract_hostname(volume_info.UNC);
|
|
if (IS_ERR(srvTcp->hostname)) {
|
|
rc = PTR_ERR(srvTcp->hostname);
|
|
sock_release(csocket);
|
|
goto out;
|
|
}
|
|
init_waitqueue_head(&srvTcp->response_q);
|
|
init_waitqueue_head(&srvTcp->request_q);
|
|
INIT_LIST_HEAD(&srvTcp->pending_mid_q);
|
|
/* at this point we are the only ones with the pointer
|
|
to the struct since the kernel thread not created yet
|
|
so no need to spinlock this init of tcpStatus */
|
|
srvTcp->tcpStatus = CifsNew;
|
|
init_MUTEX(&srvTcp->tcpSem);
|
|
srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd");
|
|
if (IS_ERR(srvTcp->tsk)) {
|
|
rc = PTR_ERR(srvTcp->tsk);
|
|
cERROR(1, ("error %d create cifsd thread", rc));
|
|
srvTcp->tsk = NULL;
|
|
sock_release(csocket);
|
|
kfree(srvTcp->hostname);
|
|
goto out;
|
|
}
|
|
rc = 0;
|
|
memcpy(srvTcp->workstation_RFC1001_name,
|
|
volume_info.source_rfc1001_name, 16);
|
|
memcpy(srvTcp->server_RFC1001_name,
|
|
volume_info.target_rfc1001_name, 16);
|
|
srvTcp->sequence_number = 0;
|
|
}
|
|
}
|
|
|
|
if (existingCifsSes) {
|
|
pSesInfo = existingCifsSes;
|
|
cFYI(1, ("Existing smb sess found (status=%d)",
|
|
pSesInfo->status));
|
|
down(&pSesInfo->sesSem);
|
|
if (pSesInfo->status == CifsNeedReconnect) {
|
|
cFYI(1, ("Session needs reconnect"));
|
|
rc = cifs_setup_session(xid, pSesInfo,
|
|
cifs_sb->local_nls);
|
|
}
|
|
up(&pSesInfo->sesSem);
|
|
} else if (!rc) {
|
|
cFYI(1, ("Existing smb sess not found"));
|
|
pSesInfo = sesInfoAlloc();
|
|
if (pSesInfo == NULL)
|
|
rc = -ENOMEM;
|
|
else {
|
|
pSesInfo->server = srvTcp;
|
|
sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
|
|
NIPQUAD(sin_server.sin_addr.s_addr));
|
|
}
|
|
|
|
if (!rc) {
|
|
/* volume_info.password freed at unmount */
|
|
if (volume_info.password) {
|
|
pSesInfo->password = volume_info.password;
|
|
/* set to NULL to prevent freeing on exit */
|
|
volume_info.password = NULL;
|
|
}
|
|
if (volume_info.username)
|
|
strncpy(pSesInfo->userName,
|
|
volume_info.username,
|
|
MAX_USERNAME_SIZE);
|
|
if (volume_info.domainname) {
|
|
int len = strlen(volume_info.domainname);
|
|
pSesInfo->domainName =
|
|
kmalloc(len + 1, GFP_KERNEL);
|
|
if (pSesInfo->domainName)
|
|
strcpy(pSesInfo->domainName,
|
|
volume_info.domainname);
|
|
}
|
|
pSesInfo->linux_uid = volume_info.linux_uid;
|
|
pSesInfo->overrideSecFlg = volume_info.secFlg;
|
|
down(&pSesInfo->sesSem);
|
|
/* BB FIXME need to pass vol->secFlgs BB */
|
|
rc = cifs_setup_session(xid, pSesInfo,
|
|
cifs_sb->local_nls);
|
|
up(&pSesInfo->sesSem);
|
|
if (!rc)
|
|
atomic_inc(&srvTcp->socketUseCount);
|
|
}
|
|
}
|
|
|
|
/* search for existing tcon to this server share */
|
|
if (!rc) {
|
|
if (volume_info.rsize > CIFSMaxBufSize) {
|
|
cERROR(1, ("rsize %d too large, using MaxBufSize",
|
|
volume_info.rsize));
|
|
cifs_sb->rsize = CIFSMaxBufSize;
|
|
} else if ((volume_info.rsize) &&
|
|
(volume_info.rsize <= CIFSMaxBufSize))
|
|
cifs_sb->rsize = volume_info.rsize;
|
|
else /* default */
|
|
cifs_sb->rsize = CIFSMaxBufSize;
|
|
|
|
if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
|
|
cERROR(1, ("wsize %d too large, using 4096 instead",
|
|
volume_info.wsize));
|
|
cifs_sb->wsize = 4096;
|
|
} else if (volume_info.wsize)
|
|
cifs_sb->wsize = volume_info.wsize;
|
|
else
|
|
cifs_sb->wsize =
|
|
min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
|
|
127*1024);
|
|
/* old default of CIFSMaxBufSize was too small now
|
|
that SMB Write2 can send multiple pages in kvec.
|
|
RFC1001 does not describe what happens when frame
|
|
bigger than 128K is sent so use that as max in
|
|
conjunction with 52K kvec constraint on arch with 4K
|
|
page size */
|
|
|
|
if (cifs_sb->rsize < 2048) {
|
|
cifs_sb->rsize = 2048;
|
|
/* Windows ME may prefer this */
|
|
cFYI(1, ("readsize set to minimum: 2048"));
|
|
}
|
|
/* calculate prepath */
|
|
cifs_sb->prepath = volume_info.prepath;
|
|
if (cifs_sb->prepath) {
|
|
cifs_sb->prepathlen = strlen(cifs_sb->prepath);
|
|
/* we can not convert the / to \ in the path
|
|
separators in the prefixpath yet because we do not
|
|
know (until reset_cifs_unix_caps is called later)
|
|
whether POSIX PATH CAP is available. We normalize
|
|
the / to \ after reset_cifs_unix_caps is called */
|
|
volume_info.prepath = NULL;
|
|
} else
|
|
cifs_sb->prepathlen = 0;
|
|
cifs_sb->mnt_uid = volume_info.linux_uid;
|
|
cifs_sb->mnt_gid = volume_info.linux_gid;
|
|
cifs_sb->mnt_file_mode = volume_info.file_mode;
|
|
cifs_sb->mnt_dir_mode = volume_info.dir_mode;
|
|
cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
|
|
cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
|
|
|
|
if (volume_info.noperm)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
|
|
if (volume_info.setuids)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
|
|
if (volume_info.server_ino)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
|
|
if (volume_info.remap)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
|
|
if (volume_info.no_xattr)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
|
|
if (volume_info.sfu_emul)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
|
|
if (volume_info.nobrl)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
|
|
if (volume_info.cifs_acl)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
|
|
if (volume_info.override_uid)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
|
|
if (volume_info.override_gid)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
|
|
if (volume_info.dynperm)
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
|
|
if (volume_info.direct_io) {
|
|
cFYI(1, ("mounting share using direct i/o"));
|
|
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
|
|
}
|
|
|
|
if ((volume_info.cifs_acl) && (volume_info.dynperm))
|
|
cERROR(1, ("mount option dynperm ignored if cifsacl "
|
|
"mount option supported"));
|
|
|
|
tcon =
|
|
find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
|
|
volume_info.username);
|
|
if (tcon) {
|
|
cFYI(1, ("Found match on UNC path"));
|
|
/* we can have only one retry value for a connection
|
|
to a share so for resources mounted more than once
|
|
to the same server share the last value passed in
|
|
for the retry flag is used */
|
|
tcon->retry = volume_info.retry;
|
|
tcon->nocase = volume_info.nocase;
|
|
if (tcon->seal != volume_info.seal)
|
|
cERROR(1, ("transport encryption setting "
|
|
"conflicts with existing tid"));
|
|
} else {
|
|
tcon = tconInfoAlloc();
|
|
if (tcon == NULL)
|
|
rc = -ENOMEM;
|
|
else {
|
|
/* check for null share name ie connecting to
|
|
* dfs root */
|
|
|
|
/* BB check if this works for exactly length
|
|
* three strings */
|
|
if ((strchr(volume_info.UNC + 3, '\\') == NULL)
|
|
&& (strchr(volume_info.UNC + 3, '/') ==
|
|
NULL)) {
|
|
/* rc = connect_to_dfs_path(xid, pSesInfo,
|
|
"", cifs_sb->local_nls,
|
|
cifs_sb->mnt_cifs_flags &
|
|
CIFS_MOUNT_MAP_SPECIAL_CHR);*/
|
|
cFYI(1, ("DFS root not supported"));
|
|
rc = -ENODEV;
|
|
goto out;
|
|
} else {
|
|
/* BB Do we need to wrap sesSem around
|
|
* this TCon call and Unix SetFS as
|
|
* we do on SessSetup and reconnect? */
|
|
rc = CIFSTCon(xid, pSesInfo,
|
|
volume_info.UNC,
|
|
tcon, cifs_sb->local_nls);
|
|
cFYI(1, ("CIFS Tcon rc = %d", rc));
|
|
}
|
|
if (!rc) {
|
|
atomic_inc(&pSesInfo->inUse);
|
|
tcon->retry = volume_info.retry;
|
|
tcon->nocase = volume_info.nocase;
|
|
tcon->seal = volume_info.seal;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (pSesInfo) {
|
|
if (pSesInfo->capabilities & CAP_LARGE_FILES) {
|
|
sb->s_maxbytes = (u64) 1 << 63;
|
|
} else
|
|
sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */
|
|
}
|
|
|
|
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
|
|
sb->s_time_gran = 100;
|
|
|
|
/* on error free sesinfo and tcon struct if needed */
|
|
if (rc) {
|
|
/* if session setup failed, use count is zero but
|
|
we still need to free cifsd thread */
|
|
if (atomic_read(&srvTcp->socketUseCount) == 0) {
|
|
spin_lock(&GlobalMid_Lock);
|
|
srvTcp->tcpStatus = CifsExiting;
|
|
spin_unlock(&GlobalMid_Lock);
|
|
if (srvTcp->tsk) {
|
|
/* If we could verify that kthread_stop would
|
|
always wake up processes blocked in
|
|
tcp in recv_mesg then we could remove the
|
|
send_sig call */
|
|
force_sig(SIGKILL, srvTcp->tsk);
|
|
kthread_stop(srvTcp->tsk);
|
|
}
|
|
}
|
|
/* If find_unc succeeded then rc == 0 so we can not end */
|
|
if (tcon) /* up accidently freeing someone elses tcon struct */
|
|
tconInfoFree(tcon);
|
|
if (existingCifsSes == NULL) {
|
|
if (pSesInfo) {
|
|
if ((pSesInfo->server) &&
|
|
(pSesInfo->status == CifsGood)) {
|
|
int temp_rc;
|
|
temp_rc = CIFSSMBLogoff(xid, pSesInfo);
|
|
/* if the socketUseCount is now zero */
|
|
if ((temp_rc == -ESHUTDOWN) &&
|
|
(pSesInfo->server) &&
|
|
(pSesInfo->server->tsk)) {
|
|
force_sig(SIGKILL,
|
|
pSesInfo->server->tsk);
|
|
kthread_stop(pSesInfo->server->tsk);
|
|
}
|
|
} else {
|
|
cFYI(1, ("No session or bad tcon"));
|
|
if ((pSesInfo->server) &&
|
|
(pSesInfo->server->tsk)) {
|
|
force_sig(SIGKILL,
|
|
pSesInfo->server->tsk);
|
|
kthread_stop(pSesInfo->server->tsk);
|
|
}
|
|
}
|
|
sesInfoFree(pSesInfo);
|
|
/* pSesInfo = NULL; */
|
|
}
|
|
}
|
|
} else {
|
|
atomic_inc(&tcon->useCount);
|
|
cifs_sb->tcon = tcon;
|
|
tcon->ses = pSesInfo;
|
|
|
|
/* do not care if following two calls succeed - informational */
|
|
if (!tcon->ipc) {
|
|
CIFSSMBQFSDeviceInfo(xid, tcon);
|
|
CIFSSMBQFSAttributeInfo(xid, tcon);
|
|
}
|
|
|
|
/* tell server which Unix caps we support */
|
|
if (tcon->ses->capabilities & CAP_UNIX)
|
|
/* reset of caps checks mount to see if unix extensions
|
|
disabled for just this mount */
|
|
reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
|
|
else
|
|
tcon->unix_ext = 0; /* server does not support them */
|
|
|
|
/* convert forward to back slashes in prepath here if needed */
|
|
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
|
|
convert_delimiter(cifs_sb->prepath,
|
|
CIFS_DIR_SEP(cifs_sb));
|
|
|
|
if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
|
|
cifs_sb->rsize = 1024 * 127;
|
|
cFYI(DBG2,
|
|
("no very large read support, rsize now 127K"));
|
|
}
|
|
if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
|
|
cifs_sb->wsize = min(cifs_sb->wsize,
|
|
(tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE));
|
|
if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
|
|
cifs_sb->rsize = min(cifs_sb->rsize,
|
|
(tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE));
|
|
}
|
|
|
|
/* volume_info.password is freed above when existing session found
|
|
(in which case it is not needed anymore) but when new sesion is created
|
|
the password ptr is put in the new session structure (in which case the
|
|
password will be freed at unmount time) */
|
|
out:
|
|
/* zero out password before freeing */
|
|
if (volume_info.password != NULL) {
|
|
memset(volume_info.password, 0, strlen(volume_info.password));
|
|
kfree(volume_info.password);
|
|
}
|
|
kfree(volume_info.UNC);
|
|
kfree(volume_info.prepath);
|
|
FreeXid(xid);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
|
|
char session_key[CIFS_SESS_KEY_SIZE],
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
struct smb_hdr *smb_buffer_response;
|
|
SESSION_SETUP_ANDX *pSMB;
|
|
SESSION_SETUP_ANDX *pSMBr;
|
|
char *bcc_ptr;
|
|
char *user;
|
|
char *domain;
|
|
int rc = 0;
|
|
int remaining_words = 0;
|
|
int bytes_returned = 0;
|
|
int len;
|
|
__u32 capabilities;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In sesssetup"));
|
|
if (ses == NULL)
|
|
return -EINVAL;
|
|
user = ses->userName;
|
|
domain = ses->domainName;
|
|
smb_buffer = cifs_buf_get();
|
|
|
|
if (smb_buffer == NULL)
|
|
return -ENOMEM;
|
|
|
|
smb_buffer_response = smb_buffer;
|
|
pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
|
|
|
|
/* send SMBsessionSetup here */
|
|
header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
|
|
NULL /* no tCon exists yet */ , 13 /* wct */ );
|
|
|
|
smb_buffer->Mid = GetNextMid(ses->server);
|
|
pSMB->req_no_secext.AndXCommand = 0xFF;
|
|
pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
|
|
pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
|
|
|
|
if (ses->server->secMode &
|
|
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
|
|
CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
|
|
capabilities |= CAP_UNICODE;
|
|
}
|
|
if (ses->capabilities & CAP_STATUS32) {
|
|
smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
|
|
capabilities |= CAP_STATUS32;
|
|
}
|
|
if (ses->capabilities & CAP_DFS) {
|
|
smb_buffer->Flags2 |= SMBFLG2_DFS;
|
|
capabilities |= CAP_DFS;
|
|
}
|
|
pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
|
|
|
|
pSMB->req_no_secext.CaseInsensitivePasswordLength =
|
|
cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
|
|
pSMB->req_no_secext.CaseSensitivePasswordLength =
|
|
cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr = pByteArea(smb_buffer);
|
|
memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
}
|
|
if (user == NULL)
|
|
bytes_returned = 0; /* skip null user */
|
|
else
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
|
|
nls_codepage);
|
|
/* convert number of 16 bit words to bytes */
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2; /* trailing null */
|
|
if (domain == NULL)
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr,
|
|
"CIFS_LINUX_DOM", 32, nls_codepage);
|
|
else
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2;
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
|
|
32, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release,
|
|
32, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2;
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
|
|
64, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2;
|
|
} else {
|
|
if (user != NULL) {
|
|
strncpy(bcc_ptr, user, 200);
|
|
bcc_ptr += strnlen(user, 200);
|
|
}
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
if (domain == NULL) {
|
|
strcpy(bcc_ptr, "CIFS_LINUX_DOM");
|
|
bcc_ptr += strlen("CIFS_LINUX_DOM") + 1;
|
|
} else {
|
|
strncpy(bcc_ptr, domain, 64);
|
|
bcc_ptr += strnlen(domain, 64);
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
}
|
|
strcpy(bcc_ptr, "Linux version ");
|
|
bcc_ptr += strlen("Linux version ");
|
|
strcpy(bcc_ptr, utsname()->release);
|
|
bcc_ptr += strlen(utsname()->release) + 1;
|
|
strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
|
|
bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
|
|
}
|
|
count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
|
|
smb_buffer->smb_buf_length += count;
|
|
pSMB->req_no_secext.ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
|
|
&bytes_returned, CIFS_LONG_OP);
|
|
if (rc) {
|
|
/* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */
|
|
} else if ((smb_buffer_response->WordCount == 3)
|
|
|| (smb_buffer_response->WordCount == 4)) {
|
|
__u16 action = le16_to_cpu(pSMBr->resp.Action);
|
|
__u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
|
|
if (action & GUEST_LOGIN)
|
|
cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */
|
|
ses->Suid = smb_buffer_response->Uid; /* UID left in wire format
|
|
(little endian) */
|
|
cFYI(1, ("UID = %d ", ses->Suid));
|
|
/* response can have either 3 or 4 word count - Samba sends 3 */
|
|
bcc_ptr = pByteArea(smb_buffer_response);
|
|
if ((pSMBr->resp.hdr.WordCount == 3)
|
|
|| ((pSMBr->resp.hdr.WordCount == 4)
|
|
&& (blob_len < pSMBr->resp.ByteCount))) {
|
|
if (pSMBr->resp.hdr.WordCount == 4)
|
|
bcc_ptr += blob_len;
|
|
|
|
if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
|
|
if ((long) (bcc_ptr) % 2) {
|
|
remaining_words =
|
|
(BCC(smb_buffer_response) - 1) / 2;
|
|
/* Unicode strings must be word
|
|
aligned */
|
|
bcc_ptr++;
|
|
} else {
|
|
remaining_words =
|
|
BCC(smb_buffer_response) / 2;
|
|
}
|
|
len =
|
|
UniStrnlen((wchar_t *) bcc_ptr,
|
|
remaining_words - 1);
|
|
/* We look for obvious messed up bcc or strings in response so we do not go off
|
|
the end since (at least) WIN2K and Windows XP have a major bug in not null
|
|
terminating last Unicode string in response */
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
ses->serverOS = kzalloc(2 * (len + 1),
|
|
GFP_KERNEL);
|
|
if (ses->serverOS == NULL)
|
|
goto sesssetup_nomem;
|
|
cifs_strfromUCS_le(ses->serverOS,
|
|
(__le16 *)bcc_ptr,
|
|
len, nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
remaining_words -= len + 1;
|
|
ses->serverOS[2 * len] = 0;
|
|
ses->serverOS[1 + (2 * len)] = 0;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *)bcc_ptr,
|
|
remaining_words-1);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS = kzalloc(2 * (len + 1),
|
|
GFP_KERNEL);
|
|
if (ses->serverNOS == NULL)
|
|
goto sesssetup_nomem;
|
|
cifs_strfromUCS_le(ses->serverNOS,
|
|
(__le16 *)bcc_ptr,
|
|
len, nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
ses->serverNOS[2 * len] = 0;
|
|
ses->serverNOS[1 + (2 * len)] = 0;
|
|
if (strncmp(ses->serverNOS,
|
|
"NT LAN Manager 4", 16) == 0) {
|
|
cFYI(1, ("NT4 server"));
|
|
ses->flags |= CIFS_SES_NT4;
|
|
}
|
|
remaining_words -= len + 1;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
|
|
/* last string is not always null terminated
|
|
(for e.g. for Windows XP & 2000) */
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2*(len+1),
|
|
GFP_KERNEL);
|
|
if (ses->serverDomain == NULL)
|
|
goto sesssetup_nomem;
|
|
cifs_strfromUCS_le(ses->serverDomain,
|
|
(__le16 *)bcc_ptr,
|
|
len, nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
ses->serverDomain[2*len] = 0;
|
|
ses->serverDomain[1+(2*len)] = 0;
|
|
} else { /* else no more room so create
|
|
dummy domain string */
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2, GFP_KERNEL);
|
|
}
|
|
} else { /* no room so create dummy domain
|
|
and NOS string */
|
|
|
|
/* if these kcallocs fail not much we
|
|
can do, but better to not fail the
|
|
sesssetup itself */
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2, GFP_KERNEL);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS =
|
|
kzalloc(2, GFP_KERNEL);
|
|
}
|
|
} else { /* ASCII */
|
|
len = strnlen(bcc_ptr, 1024);
|
|
if (((long) bcc_ptr + len) - (long)
|
|
pByteArea(smb_buffer_response)
|
|
<= BCC(smb_buffer_response)) {
|
|
kfree(ses->serverOS);
|
|
ses->serverOS = kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
if (ses->serverOS == NULL)
|
|
goto sesssetup_nomem;
|
|
strncpy(ses->serverOS, bcc_ptr, len);
|
|
|
|
bcc_ptr += len;
|
|
/* null terminate the string */
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS = kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
if (ses->serverNOS == NULL)
|
|
goto sesssetup_nomem;
|
|
strncpy(ses->serverNOS, bcc_ptr, len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain = kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
if (ses->serverDomain == NULL)
|
|
goto sesssetup_nomem;
|
|
strncpy(ses->serverDomain, bcc_ptr,
|
|
len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
} else
|
|
cFYI(1,
|
|
("Variable field of length %d "
|
|
"extends beyond end of smb ",
|
|
len));
|
|
}
|
|
} else {
|
|
cERROR(1,
|
|
(" Security Blob Length extends beyond "
|
|
"end of SMB"));
|
|
}
|
|
} else {
|
|
cERROR(1,
|
|
(" Invalid Word count %d: ",
|
|
smb_buffer_response->WordCount));
|
|
rc = -EIO;
|
|
}
|
|
sesssetup_nomem: /* do not return an error on nomem for the info strings,
|
|
since that could make reconnection harder, and
|
|
reconnection might be needed to free memory */
|
|
cifs_buf_release(smb_buffer);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
|
|
struct cifsSesInfo *ses, bool *pNTLMv2_flag,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
struct smb_hdr *smb_buffer_response;
|
|
SESSION_SETUP_ANDX *pSMB;
|
|
SESSION_SETUP_ANDX *pSMBr;
|
|
char *bcc_ptr;
|
|
char *domain;
|
|
int rc = 0;
|
|
int remaining_words = 0;
|
|
int bytes_returned = 0;
|
|
int len;
|
|
int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE);
|
|
PNEGOTIATE_MESSAGE SecurityBlob;
|
|
PCHALLENGE_MESSAGE SecurityBlob2;
|
|
__u32 negotiate_flags, capabilities;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In NTLMSSP sesssetup (negotiate)"));
|
|
if (ses == NULL)
|
|
return -EINVAL;
|
|
domain = ses->domainName;
|
|
*pNTLMv2_flag = false;
|
|
smb_buffer = cifs_buf_get();
|
|
if (smb_buffer == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
smb_buffer_response = smb_buffer;
|
|
pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
|
|
pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response;
|
|
|
|
/* send SMBsessionSetup here */
|
|
header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
|
|
NULL /* no tCon exists yet */ , 12 /* wct */ );
|
|
|
|
smb_buffer->Mid = GetNextMid(ses->server);
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
|
|
pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
|
|
|
|
pSMB->req.AndXCommand = 0xFF;
|
|
pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
|
|
pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
|
|
|
|
if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
|
|
CAP_EXTENDED_SECURITY;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
|
|
capabilities |= CAP_UNICODE;
|
|
}
|
|
if (ses->capabilities & CAP_STATUS32) {
|
|
smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
|
|
capabilities |= CAP_STATUS32;
|
|
}
|
|
if (ses->capabilities & CAP_DFS) {
|
|
smb_buffer->Flags2 |= SMBFLG2_DFS;
|
|
capabilities |= CAP_DFS;
|
|
}
|
|
pSMB->req.Capabilities = cpu_to_le32(capabilities);
|
|
|
|
bcc_ptr = (char *) &pSMB->req.SecurityBlob;
|
|
SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr;
|
|
strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
|
|
SecurityBlob->MessageType = NtLmNegotiate;
|
|
negotiate_flags =
|
|
NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM |
|
|
NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM |
|
|
NTLMSSP_NEGOTIATE_56 |
|
|
/* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128;
|
|
if (sign_CIFS_PDUs)
|
|
negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN;
|
|
/* if (ntlmv2_support)
|
|
negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/
|
|
/* setup pointers to domain name and workstation name */
|
|
bcc_ptr += SecurityBlobLength;
|
|
|
|
SecurityBlob->WorkstationName.Buffer = 0;
|
|
SecurityBlob->WorkstationName.Length = 0;
|
|
SecurityBlob->WorkstationName.MaximumLength = 0;
|
|
|
|
/* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent
|
|
along with username on auth request (ie the response to challenge) */
|
|
SecurityBlob->DomainName.Buffer = 0;
|
|
SecurityBlob->DomainName.Length = 0;
|
|
SecurityBlob->DomainName.MaximumLength = 0;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
if ((long) bcc_ptr % 2) {
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
}
|
|
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
|
|
32, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2; /* null terminate Linux version */
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
|
|
64, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
*(bcc_ptr + 1) = 0;
|
|
*(bcc_ptr + 2) = 0;
|
|
bcc_ptr += 2; /* null terminate network opsys string */
|
|
*(bcc_ptr + 1) = 0;
|
|
*(bcc_ptr + 2) = 0;
|
|
bcc_ptr += 2; /* null domain */
|
|
} else { /* ASCII */
|
|
strcpy(bcc_ptr, "Linux version ");
|
|
bcc_ptr += strlen("Linux version ");
|
|
strcpy(bcc_ptr, utsname()->release);
|
|
bcc_ptr += strlen(utsname()->release) + 1;
|
|
strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
|
|
bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
|
|
bcc_ptr++; /* empty domain field */
|
|
*bcc_ptr = 0;
|
|
}
|
|
SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
|
|
pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
|
|
count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
|
|
smb_buffer->smb_buf_length += count;
|
|
pSMB->req.ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
|
|
&bytes_returned, CIFS_LONG_OP);
|
|
|
|
if (smb_buffer_response->Status.CifsError ==
|
|
cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED))
|
|
rc = 0;
|
|
|
|
if (rc) {
|
|
/* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
|
|
} else if ((smb_buffer_response->WordCount == 3)
|
|
|| (smb_buffer_response->WordCount == 4)) {
|
|
__u16 action = le16_to_cpu(pSMBr->resp.Action);
|
|
__u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
|
|
|
|
if (action & GUEST_LOGIN)
|
|
cFYI(1, (" Guest login"));
|
|
/* Do we want to set anything in SesInfo struct when guest login? */
|
|
|
|
bcc_ptr = pByteArea(smb_buffer_response);
|
|
/* response can have either 3 or 4 word count - Samba sends 3 */
|
|
|
|
SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr;
|
|
if (SecurityBlob2->MessageType != NtLmChallenge) {
|
|
cFYI(1,
|
|
("Unexpected NTLMSSP message type received %d",
|
|
SecurityBlob2->MessageType));
|
|
} else if (ses) {
|
|
ses->Suid = smb_buffer_response->Uid; /* UID left in le format */
|
|
cFYI(1, ("UID = %d", ses->Suid));
|
|
if ((pSMBr->resp.hdr.WordCount == 3)
|
|
|| ((pSMBr->resp.hdr.WordCount == 4)
|
|
&& (blob_len <
|
|
pSMBr->resp.ByteCount))) {
|
|
|
|
if (pSMBr->resp.hdr.WordCount == 4) {
|
|
bcc_ptr += blob_len;
|
|
cFYI(1, ("Security Blob Length %d",
|
|
blob_len));
|
|
}
|
|
|
|
cFYI(1, ("NTLMSSP Challenge rcvd"));
|
|
|
|
memcpy(ses->server->cryptKey,
|
|
SecurityBlob2->Challenge,
|
|
CIFS_CRYPTO_KEY_SIZE);
|
|
if (SecurityBlob2->NegotiateFlags &
|
|
cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2))
|
|
*pNTLMv2_flag = true;
|
|
|
|
if ((SecurityBlob2->NegotiateFlags &
|
|
cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN))
|
|
|| (sign_CIFS_PDUs > 1))
|
|
ses->server->secMode |=
|
|
SECMODE_SIGN_REQUIRED;
|
|
if ((SecurityBlob2->NegotiateFlags &
|
|
cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs))
|
|
ses->server->secMode |=
|
|
SECMODE_SIGN_ENABLED;
|
|
|
|
if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
|
|
if ((long) (bcc_ptr) % 2) {
|
|
remaining_words =
|
|
(BCC(smb_buffer_response)
|
|
- 1) / 2;
|
|
/* Must word align unicode strings */
|
|
bcc_ptr++;
|
|
} else {
|
|
remaining_words =
|
|
BCC
|
|
(smb_buffer_response) / 2;
|
|
}
|
|
len =
|
|
UniStrnlen((wchar_t *) bcc_ptr,
|
|
remaining_words - 1);
|
|
/* We look for obvious messed up bcc or strings in response so we do not go off
|
|
the end since (at least) WIN2K and Windows XP have a major bug in not null
|
|
terminating last Unicode string in response */
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
ses->serverOS =
|
|
kzalloc(2 * (len + 1), GFP_KERNEL);
|
|
cifs_strfromUCS_le(ses->serverOS,
|
|
(__le16 *)
|
|
bcc_ptr, len,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
remaining_words -= len + 1;
|
|
ses->serverOS[2 * len] = 0;
|
|
ses->serverOS[1 + (2 * len)] = 0;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *)
|
|
bcc_ptr,
|
|
remaining_words
|
|
- 1);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS =
|
|
kzalloc(2 * (len + 1),
|
|
GFP_KERNEL);
|
|
cifs_strfromUCS_le(ses->
|
|
serverNOS,
|
|
(__le16 *)
|
|
bcc_ptr,
|
|
len,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
ses->serverNOS[2 * len] = 0;
|
|
ses->serverNOS[1 +
|
|
(2 * len)] = 0;
|
|
remaining_words -= len + 1;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
|
|
/* last string not always null terminated
|
|
(for e.g. for Windows XP & 2000) */
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2 *
|
|
(len +
|
|
1),
|
|
GFP_KERNEL);
|
|
cifs_strfromUCS_le
|
|
(ses->serverDomain,
|
|
(__le16 *)bcc_ptr,
|
|
len, nls_codepage);
|
|
bcc_ptr +=
|
|
2 * (len + 1);
|
|
ses->serverDomain[2*len]
|
|
= 0;
|
|
ses->serverDomain
|
|
[1 + (2 * len)]
|
|
= 0;
|
|
} /* else no more room so create dummy domain string */
|
|
else {
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2,
|
|
GFP_KERNEL);
|
|
}
|
|
} else { /* no room so create dummy domain and NOS string */
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2, GFP_KERNEL);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS =
|
|
kzalloc(2, GFP_KERNEL);
|
|
}
|
|
} else { /* ASCII */
|
|
len = strnlen(bcc_ptr, 1024);
|
|
if (((long) bcc_ptr + len) - (long)
|
|
pByteArea(smb_buffer_response)
|
|
<= BCC(smb_buffer_response)) {
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
ses->serverOS =
|
|
kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
strncpy(ses->serverOS,
|
|
bcc_ptr, len);
|
|
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0; /* null terminate string */
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS =
|
|
kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
strncpy(ses->serverNOS, bcc_ptr, len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(len + 1,
|
|
GFP_KERNEL);
|
|
strncpy(ses->serverDomain,
|
|
bcc_ptr, len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
} else
|
|
cFYI(1,
|
|
("field of length %d "
|
|
"extends beyond end of smb",
|
|
len));
|
|
}
|
|
} else {
|
|
cERROR(1, ("Security Blob Length extends beyond"
|
|
" end of SMB"));
|
|
}
|
|
} else {
|
|
cERROR(1, ("No session structure passed in."));
|
|
}
|
|
} else {
|
|
cERROR(1,
|
|
(" Invalid Word count %d:",
|
|
smb_buffer_response->WordCount));
|
|
rc = -EIO;
|
|
}
|
|
|
|
cifs_buf_release(smb_buffer);
|
|
|
|
return rc;
|
|
}
|
|
static int
|
|
CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
|
|
char *ntlm_session_key, bool ntlmv2_flag,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
struct smb_hdr *smb_buffer_response;
|
|
SESSION_SETUP_ANDX *pSMB;
|
|
SESSION_SETUP_ANDX *pSMBr;
|
|
char *bcc_ptr;
|
|
char *user;
|
|
char *domain;
|
|
int rc = 0;
|
|
int remaining_words = 0;
|
|
int bytes_returned = 0;
|
|
int len;
|
|
int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE);
|
|
PAUTHENTICATE_MESSAGE SecurityBlob;
|
|
__u32 negotiate_flags, capabilities;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In NTLMSSPSessSetup (Authenticate)"));
|
|
if (ses == NULL)
|
|
return -EINVAL;
|
|
user = ses->userName;
|
|
domain = ses->domainName;
|
|
smb_buffer = cifs_buf_get();
|
|
if (smb_buffer == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
smb_buffer_response = smb_buffer;
|
|
pSMB = (SESSION_SETUP_ANDX *)smb_buffer;
|
|
pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response;
|
|
|
|
/* send SMBsessionSetup here */
|
|
header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
|
|
NULL /* no tCon exists yet */ , 12 /* wct */ );
|
|
|
|
smb_buffer->Mid = GetNextMid(ses->server);
|
|
pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
|
|
pSMB->req.AndXCommand = 0xFF;
|
|
pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
|
|
pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
|
|
|
|
pSMB->req.hdr.Uid = ses->Suid;
|
|
|
|
if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
|
|
CAP_EXTENDED_SECURITY;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
|
|
capabilities |= CAP_UNICODE;
|
|
}
|
|
if (ses->capabilities & CAP_STATUS32) {
|
|
smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
|
|
capabilities |= CAP_STATUS32;
|
|
}
|
|
if (ses->capabilities & CAP_DFS) {
|
|
smb_buffer->Flags2 |= SMBFLG2_DFS;
|
|
capabilities |= CAP_DFS;
|
|
}
|
|
pSMB->req.Capabilities = cpu_to_le32(capabilities);
|
|
|
|
bcc_ptr = (char *)&pSMB->req.SecurityBlob;
|
|
SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr;
|
|
strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
|
|
SecurityBlob->MessageType = NtLmAuthenticate;
|
|
bcc_ptr += SecurityBlobLength;
|
|
negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET |
|
|
NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO |
|
|
0x80000000 | NTLMSSP_NEGOTIATE_128;
|
|
if (sign_CIFS_PDUs)
|
|
negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN;
|
|
if (ntlmv2_flag)
|
|
negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
|
|
|
|
/* setup pointers to domain name and workstation name */
|
|
|
|
SecurityBlob->WorkstationName.Buffer = 0;
|
|
SecurityBlob->WorkstationName.Length = 0;
|
|
SecurityBlob->WorkstationName.MaximumLength = 0;
|
|
SecurityBlob->SessionKey.Length = 0;
|
|
SecurityBlob->SessionKey.MaximumLength = 0;
|
|
SecurityBlob->SessionKey.Buffer = 0;
|
|
|
|
SecurityBlob->LmChallengeResponse.Length = 0;
|
|
SecurityBlob->LmChallengeResponse.MaximumLength = 0;
|
|
SecurityBlob->LmChallengeResponse.Buffer = 0;
|
|
|
|
SecurityBlob->NtChallengeResponse.Length =
|
|
cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
SecurityBlob->NtChallengeResponse.MaximumLength =
|
|
cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE);
|
|
SecurityBlob->NtChallengeResponse.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
SecurityBlobLength += CIFS_SESS_KEY_SIZE;
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
if (domain == NULL) {
|
|
SecurityBlob->DomainName.Buffer = 0;
|
|
SecurityBlob->DomainName.Length = 0;
|
|
SecurityBlob->DomainName.MaximumLength = 0;
|
|
} else {
|
|
__u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
|
|
nls_codepage);
|
|
ln *= 2;
|
|
SecurityBlob->DomainName.MaximumLength =
|
|
cpu_to_le16(ln);
|
|
SecurityBlob->DomainName.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
bcc_ptr += ln;
|
|
SecurityBlobLength += ln;
|
|
SecurityBlob->DomainName.Length = cpu_to_le16(ln);
|
|
}
|
|
if (user == NULL) {
|
|
SecurityBlob->UserName.Buffer = 0;
|
|
SecurityBlob->UserName.Length = 0;
|
|
SecurityBlob->UserName.MaximumLength = 0;
|
|
} else {
|
|
__u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64,
|
|
nls_codepage);
|
|
ln *= 2;
|
|
SecurityBlob->UserName.MaximumLength =
|
|
cpu_to_le16(ln);
|
|
SecurityBlob->UserName.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
bcc_ptr += ln;
|
|
SecurityBlobLength += ln;
|
|
SecurityBlob->UserName.Length = cpu_to_le16(ln);
|
|
}
|
|
|
|
/* SecurityBlob->WorkstationName.Length =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage);
|
|
SecurityBlob->WorkstationName.Length *= 2;
|
|
SecurityBlob->WorkstationName.MaximumLength =
|
|
cpu_to_le16(SecurityBlob->WorkstationName.Length);
|
|
SecurityBlob->WorkstationName.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
bcc_ptr += SecurityBlob->WorkstationName.Length;
|
|
SecurityBlobLength += SecurityBlob->WorkstationName.Length;
|
|
SecurityBlob->WorkstationName.Length =
|
|
cpu_to_le16(SecurityBlob->WorkstationName.Length); */
|
|
|
|
if ((long) bcc_ptr % 2) {
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
}
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
|
|
32, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
bcc_ptr += 2; /* null term version string */
|
|
bytes_returned =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
|
|
64, nls_codepage);
|
|
bcc_ptr += 2 * bytes_returned;
|
|
*(bcc_ptr + 1) = 0;
|
|
*(bcc_ptr + 2) = 0;
|
|
bcc_ptr += 2; /* null terminate network opsys string */
|
|
*(bcc_ptr + 1) = 0;
|
|
*(bcc_ptr + 2) = 0;
|
|
bcc_ptr += 2; /* null domain */
|
|
} else { /* ASCII */
|
|
if (domain == NULL) {
|
|
SecurityBlob->DomainName.Buffer = 0;
|
|
SecurityBlob->DomainName.Length = 0;
|
|
SecurityBlob->DomainName.MaximumLength = 0;
|
|
} else {
|
|
__u16 ln;
|
|
negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED;
|
|
strncpy(bcc_ptr, domain, 63);
|
|
ln = strnlen(domain, 64);
|
|
SecurityBlob->DomainName.MaximumLength =
|
|
cpu_to_le16(ln);
|
|
SecurityBlob->DomainName.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
bcc_ptr += ln;
|
|
SecurityBlobLength += ln;
|
|
SecurityBlob->DomainName.Length = cpu_to_le16(ln);
|
|
}
|
|
if (user == NULL) {
|
|
SecurityBlob->UserName.Buffer = 0;
|
|
SecurityBlob->UserName.Length = 0;
|
|
SecurityBlob->UserName.MaximumLength = 0;
|
|
} else {
|
|
__u16 ln;
|
|
strncpy(bcc_ptr, user, 63);
|
|
ln = strnlen(user, 64);
|
|
SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln);
|
|
SecurityBlob->UserName.Buffer =
|
|
cpu_to_le32(SecurityBlobLength);
|
|
bcc_ptr += ln;
|
|
SecurityBlobLength += ln;
|
|
SecurityBlob->UserName.Length = cpu_to_le16(ln);
|
|
}
|
|
/* BB fill in our workstation name if known BB */
|
|
|
|
strcpy(bcc_ptr, "Linux version ");
|
|
bcc_ptr += strlen("Linux version ");
|
|
strcpy(bcc_ptr, utsname()->release);
|
|
bcc_ptr += strlen(utsname()->release) + 1;
|
|
strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
|
|
bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
|
|
bcc_ptr++; /* null domain */
|
|
*bcc_ptr = 0;
|
|
}
|
|
SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
|
|
pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
|
|
count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
|
|
smb_buffer->smb_buf_length += count;
|
|
pSMB->req.ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
|
|
&bytes_returned, CIFS_LONG_OP);
|
|
if (rc) {
|
|
/* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */
|
|
} else if ((smb_buffer_response->WordCount == 3) ||
|
|
(smb_buffer_response->WordCount == 4)) {
|
|
__u16 action = le16_to_cpu(pSMBr->resp.Action);
|
|
__u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
|
|
if (action & GUEST_LOGIN)
|
|
cFYI(1, (" Guest login")); /* BB Should we set anything
|
|
in SesInfo struct ? */
|
|
/* if (SecurityBlob2->MessageType != NtLm??) {
|
|
cFYI("Unexpected message type on auth response is %d"));
|
|
} */
|
|
|
|
if (ses) {
|
|
cFYI(1,
|
|
("Check challenge UID %d vs auth response UID %d",
|
|
ses->Suid, smb_buffer_response->Uid));
|
|
/* UID left in wire format */
|
|
ses->Suid = smb_buffer_response->Uid;
|
|
bcc_ptr = pByteArea(smb_buffer_response);
|
|
/* response can have either 3 or 4 word count - Samba sends 3 */
|
|
if ((pSMBr->resp.hdr.WordCount == 3)
|
|
|| ((pSMBr->resp.hdr.WordCount == 4)
|
|
&& (blob_len <
|
|
pSMBr->resp.ByteCount))) {
|
|
if (pSMBr->resp.hdr.WordCount == 4) {
|
|
bcc_ptr +=
|
|
blob_len;
|
|
cFYI(1,
|
|
("Security Blob Length %d ",
|
|
blob_len));
|
|
}
|
|
|
|
cFYI(1,
|
|
("NTLMSSP response to Authenticate "));
|
|
|
|
if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
|
|
if ((long) (bcc_ptr) % 2) {
|
|
remaining_words =
|
|
(BCC(smb_buffer_response)
|
|
- 1) / 2;
|
|
bcc_ptr++; /* Unicode strings must be word aligned */
|
|
} else {
|
|
remaining_words = BCC(smb_buffer_response) / 2;
|
|
}
|
|
len = UniStrnlen((wchar_t *) bcc_ptr,
|
|
remaining_words - 1);
|
|
/* We look for obvious messed up bcc or strings in response so we do not go off
|
|
the end since (at least) WIN2K and Windows XP have a major bug in not null
|
|
terminating last Unicode string in response */
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
ses->serverOS =
|
|
kzalloc(2 * (len + 1), GFP_KERNEL);
|
|
cifs_strfromUCS_le(ses->serverOS,
|
|
(__le16 *)
|
|
bcc_ptr, len,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
remaining_words -= len + 1;
|
|
ses->serverOS[2 * len] = 0;
|
|
ses->serverOS[1 + (2 * len)] = 0;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *)
|
|
bcc_ptr,
|
|
remaining_words
|
|
- 1);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS =
|
|
kzalloc(2 * (len + 1),
|
|
GFP_KERNEL);
|
|
cifs_strfromUCS_le(ses->
|
|
serverNOS,
|
|
(__le16 *)
|
|
bcc_ptr,
|
|
len,
|
|
nls_codepage);
|
|
bcc_ptr += 2 * (len + 1);
|
|
ses->serverNOS[2 * len] = 0;
|
|
ses->serverNOS[1+(2*len)] = 0;
|
|
remaining_words -= len + 1;
|
|
if (remaining_words > 0) {
|
|
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
|
|
/* last string not always null terminated (e.g. for Windows XP & 2000) */
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(2 *
|
|
(len +
|
|
1),
|
|
GFP_KERNEL);
|
|
cifs_strfromUCS_le
|
|
(ses->
|
|
serverDomain,
|
|
(__le16 *)
|
|
bcc_ptr, len,
|
|
nls_codepage);
|
|
bcc_ptr +=
|
|
2 * (len + 1);
|
|
ses->
|
|
serverDomain[2
|
|
* len]
|
|
= 0;
|
|
ses->
|
|
serverDomain[1
|
|
+
|
|
(2
|
|
*
|
|
len)]
|
|
= 0;
|
|
} /* else no more room so create dummy domain string */
|
|
else {
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain = kzalloc(2,GFP_KERNEL);
|
|
}
|
|
} else { /* no room so create dummy domain and NOS string */
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain = kzalloc(2, GFP_KERNEL);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS = kzalloc(2, GFP_KERNEL);
|
|
}
|
|
} else { /* ASCII */
|
|
len = strnlen(bcc_ptr, 1024);
|
|
if (((long) bcc_ptr + len) -
|
|
(long) pByteArea(smb_buffer_response)
|
|
<= BCC(smb_buffer_response)) {
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
|
|
strncpy(ses->serverOS,bcc_ptr, len);
|
|
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0; /* null terminate the string */
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS = kzalloc(len+1,
|
|
GFP_KERNEL);
|
|
strncpy(ses->serverNOS,
|
|
bcc_ptr, len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
|
|
len = strnlen(bcc_ptr, 1024);
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain =
|
|
kzalloc(len+1,
|
|
GFP_KERNEL);
|
|
strncpy(ses->serverDomain,
|
|
bcc_ptr, len);
|
|
bcc_ptr += len;
|
|
bcc_ptr[0] = 0;
|
|
bcc_ptr++;
|
|
} else
|
|
cFYI(1, ("field of length %d "
|
|
"extends beyond end of smb ",
|
|
len));
|
|
}
|
|
} else {
|
|
cERROR(1, ("Security Blob extends beyond end "
|
|
"of SMB"));
|
|
}
|
|
} else {
|
|
cERROR(1, ("No session structure passed in."));
|
|
}
|
|
} else {
|
|
cERROR(1, ("Invalid Word count %d: ",
|
|
smb_buffer_response->WordCount));
|
|
rc = -EIO;
|
|
}
|
|
|
|
cifs_buf_release(smb_buffer);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
|
|
const char *tree, struct cifsTconInfo *tcon,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
struct smb_hdr *smb_buffer_response;
|
|
TCONX_REQ *pSMB;
|
|
TCONX_RSP *pSMBr;
|
|
unsigned char *bcc_ptr;
|
|
int rc = 0;
|
|
int length;
|
|
__u16 count;
|
|
|
|
if (ses == NULL)
|
|
return -EIO;
|
|
|
|
smb_buffer = cifs_buf_get();
|
|
if (smb_buffer == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
smb_buffer_response = smb_buffer;
|
|
|
|
header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
|
|
NULL /*no tid */ , 4 /*wct */ );
|
|
|
|
smb_buffer->Mid = GetNextMid(ses->server);
|
|
smb_buffer->Uid = ses->Suid;
|
|
pSMB = (TCONX_REQ *) smb_buffer;
|
|
pSMBr = (TCONX_RSP *) smb_buffer_response;
|
|
|
|
pSMB->AndXCommand = 0xFF;
|
|
pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
|
|
bcc_ptr = &pSMB->Password[0];
|
|
if ((ses->server->secMode) & SECMODE_USER) {
|
|
pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
|
|
*bcc_ptr = 0; /* password is null byte */
|
|
bcc_ptr++; /* skip password */
|
|
/* already aligned so no need to do it below */
|
|
} else {
|
|
pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
/* BB FIXME add code to fail this if NTLMv2 or Kerberos
|
|
specified as required (when that support is added to
|
|
the vfs in the future) as only NTLM or the much
|
|
weaker LANMAN (which we do not send by default) is accepted
|
|
by Samba (not sure whether other servers allow
|
|
NTLMv2 password here) */
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
if ((extended_security & CIFSSEC_MAY_LANMAN) &&
|
|
(ses->server->secType == LANMAN))
|
|
calc_lanman_hash(ses, bcc_ptr);
|
|
else
|
|
#endif /* CIFS_WEAK_PW_HASH */
|
|
SMBNTencrypt(ses->password,
|
|
ses->server->cryptKey,
|
|
bcc_ptr);
|
|
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
/* must align unicode strings */
|
|
*bcc_ptr = 0; /* null byte password */
|
|
bcc_ptr++;
|
|
}
|
|
}
|
|
|
|
if (ses->server->secMode &
|
|
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
if (ses->capabilities & CAP_STATUS32) {
|
|
smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
|
|
}
|
|
if (ses->capabilities & CAP_DFS) {
|
|
smb_buffer->Flags2 |= SMBFLG2_DFS;
|
|
}
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
|
|
length =
|
|
cifs_strtoUCS((__le16 *) bcc_ptr, tree,
|
|
6 /* max utf8 char length in bytes */ *
|
|
(/* server len*/ + 256 /* share len */), nls_codepage);
|
|
bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */
|
|
bcc_ptr += 2; /* skip trailing null */
|
|
} else { /* ASCII */
|
|
strcpy(bcc_ptr, tree);
|
|
bcc_ptr += strlen(tree) + 1;
|
|
}
|
|
strcpy(bcc_ptr, "?????");
|
|
bcc_ptr += strlen("?????");
|
|
bcc_ptr += 1;
|
|
count = bcc_ptr - &pSMB->Password[0];
|
|
pSMB->hdr.smb_buf_length += count;
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length,
|
|
CIFS_STD_OP);
|
|
|
|
/* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */
|
|
/* above now done in SendReceive */
|
|
if ((rc == 0) && (tcon != NULL)) {
|
|
tcon->tidStatus = CifsGood;
|
|
tcon->tid = smb_buffer_response->Tid;
|
|
bcc_ptr = pByteArea(smb_buffer_response);
|
|
length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
|
|
/* skip service field (NB: this field is always ASCII) */
|
|
if (length == 3) {
|
|
if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') &&
|
|
(bcc_ptr[2] == 'C')) {
|
|
cFYI(1, ("IPC connection"));
|
|
tcon->ipc = 1;
|
|
}
|
|
} else if (length == 2) {
|
|
if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) {
|
|
/* the most common case */
|
|
cFYI(1, ("disk share connection"));
|
|
}
|
|
}
|
|
bcc_ptr += length + 1;
|
|
strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
|
|
if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
|
|
length = UniStrnlen((wchar_t *) bcc_ptr, 512);
|
|
if ((bcc_ptr + (2 * length)) -
|
|
pByteArea(smb_buffer_response) <=
|
|
BCC(smb_buffer_response)) {
|
|
kfree(tcon->nativeFileSystem);
|
|
tcon->nativeFileSystem =
|
|
kzalloc(length + 2, GFP_KERNEL);
|
|
if (tcon->nativeFileSystem)
|
|
cifs_strfromUCS_le(
|
|
tcon->nativeFileSystem,
|
|
(__le16 *) bcc_ptr,
|
|
length, nls_codepage);
|
|
bcc_ptr += 2 * length;
|
|
bcc_ptr[0] = 0; /* null terminate the string */
|
|
bcc_ptr[1] = 0;
|
|
bcc_ptr += 2;
|
|
}
|
|
/* else do not bother copying these information fields*/
|
|
} else {
|
|
length = strnlen(bcc_ptr, 1024);
|
|
if ((bcc_ptr + length) -
|
|
pByteArea(smb_buffer_response) <=
|
|
BCC(smb_buffer_response)) {
|
|
kfree(tcon->nativeFileSystem);
|
|
tcon->nativeFileSystem =
|
|
kzalloc(length + 1, GFP_KERNEL);
|
|
if (tcon->nativeFileSystem)
|
|
strncpy(tcon->nativeFileSystem, bcc_ptr,
|
|
length);
|
|
}
|
|
/* else do not bother copying these information fields*/
|
|
}
|
|
if ((smb_buffer_response->WordCount == 3) ||
|
|
(smb_buffer_response->WordCount == 7))
|
|
/* field is in same location */
|
|
tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
|
|
else
|
|
tcon->Flags = 0;
|
|
cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags));
|
|
} else if ((rc == 0) && tcon == NULL) {
|
|
/* all we need to save for IPC$ connection */
|
|
ses->ipc_tid = smb_buffer_response->Tid;
|
|
}
|
|
|
|
cifs_buf_release(smb_buffer);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc = 0;
|
|
int xid;
|
|
struct cifsSesInfo *ses = NULL;
|
|
struct task_struct *cifsd_task;
|
|
char *tmp;
|
|
|
|
xid = GetXid();
|
|
|
|
if (cifs_sb->tcon) {
|
|
ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
|
|
rc = CIFSSMBTDis(xid, cifs_sb->tcon);
|
|
if (rc == -EBUSY) {
|
|
FreeXid(xid);
|
|
return 0;
|
|
}
|
|
DeleteTconOplockQEntries(cifs_sb->tcon);
|
|
tconInfoFree(cifs_sb->tcon);
|
|
if ((ses) && (ses->server)) {
|
|
/* save off task so we do not refer to ses later */
|
|
cifsd_task = ses->server->tsk;
|
|
cFYI(1, ("About to do SMBLogoff "));
|
|
rc = CIFSSMBLogoff(xid, ses);
|
|
if (rc == -EBUSY) {
|
|
FreeXid(xid);
|
|
return 0;
|
|
} else if (rc == -ESHUTDOWN) {
|
|
cFYI(1, ("Waking up socket by sending signal"));
|
|
if (cifsd_task) {
|
|
force_sig(SIGKILL, cifsd_task);
|
|
kthread_stop(cifsd_task);
|
|
}
|
|
rc = 0;
|
|
} /* else - we have an smb session
|
|
left on this socket do not kill cifsd */
|
|
} else
|
|
cFYI(1, ("No session or bad tcon"));
|
|
}
|
|
|
|
cifs_sb->tcon = NULL;
|
|
tmp = cifs_sb->prepath;
|
|
cifs_sb->prepathlen = 0;
|
|
cifs_sb->prepath = NULL;
|
|
kfree(tmp);
|
|
if (ses)
|
|
sesInfoFree(ses);
|
|
|
|
FreeXid(xid);
|
|
return rc;
|
|
}
|
|
|
|
int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
|
|
struct nls_table *nls_info)
|
|
{
|
|
int rc = 0;
|
|
char ntlm_session_key[CIFS_SESS_KEY_SIZE];
|
|
bool ntlmv2_flag = false;
|
|
int first_time = 0;
|
|
struct TCP_Server_Info *server = pSesInfo->server;
|
|
|
|
/* what if server changes its buffer size after dropping the session? */
|
|
if (server->maxBuf == 0) /* no need to send on reconnect */ {
|
|
rc = CIFSSMBNegotiate(xid, pSesInfo);
|
|
if (rc == -EAGAIN) {
|
|
/* retry only once on 1st time connection */
|
|
rc = CIFSSMBNegotiate(xid, pSesInfo);
|
|
if (rc == -EAGAIN)
|
|
rc = -EHOSTDOWN;
|
|
}
|
|
if (rc == 0) {
|
|
spin_lock(&GlobalMid_Lock);
|
|
if (server->tcpStatus != CifsExiting)
|
|
server->tcpStatus = CifsGood;
|
|
else
|
|
rc = -EHOSTDOWN;
|
|
spin_unlock(&GlobalMid_Lock);
|
|
|
|
}
|
|
first_time = 1;
|
|
}
|
|
|
|
if (rc)
|
|
goto ss_err_exit;
|
|
|
|
pSesInfo->flags = 0;
|
|
pSesInfo->capabilities = server->capabilities;
|
|
if (linuxExtEnabled == 0)
|
|
pSesInfo->capabilities &= (~CAP_UNIX);
|
|
/* pSesInfo->sequence_number = 0;*/
|
|
cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
|
|
server->secMode, server->capabilities, server->timeAdj));
|
|
|
|
if (experimEnabled < 2)
|
|
rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info);
|
|
else if (extended_security
|
|
&& (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
|
|
&& (server->secType == NTLMSSP)) {
|
|
rc = -EOPNOTSUPP;
|
|
} else if (extended_security
|
|
&& (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
|
|
&& (server->secType == RawNTLMSSP)) {
|
|
cFYI(1, ("NTLMSSP sesssetup"));
|
|
rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag,
|
|
nls_info);
|
|
if (!rc) {
|
|
if (ntlmv2_flag) {
|
|
char *v2_response;
|
|
cFYI(1, ("more secure NTLM ver2 hash"));
|
|
if (CalcNTLMv2_partial_mac_key(pSesInfo,
|
|
nls_info)) {
|
|
rc = -ENOMEM;
|
|
goto ss_err_exit;
|
|
} else
|
|
v2_response = kmalloc(16 + 64 /* blob*/,
|
|
GFP_KERNEL);
|
|
if (v2_response) {
|
|
CalcNTLMv2_response(pSesInfo,
|
|
v2_response);
|
|
/* if (first_time)
|
|
cifs_calculate_ntlmv2_mac_key */
|
|
kfree(v2_response);
|
|
/* BB Put dummy sig in SessSetup PDU? */
|
|
} else {
|
|
rc = -ENOMEM;
|
|
goto ss_err_exit;
|
|
}
|
|
|
|
} else {
|
|
SMBNTencrypt(pSesInfo->password,
|
|
server->cryptKey,
|
|
ntlm_session_key);
|
|
|
|
if (first_time)
|
|
cifs_calculate_mac_key(
|
|
&server->mac_signing_key,
|
|
ntlm_session_key,
|
|
pSesInfo->password);
|
|
}
|
|
/* for better security the weaker lanman hash not sent
|
|
in AuthSessSetup so we no longer calculate it */
|
|
|
|
rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo,
|
|
ntlm_session_key,
|
|
ntlmv2_flag,
|
|
nls_info);
|
|
}
|
|
} else { /* old style NTLM 0.12 session setup */
|
|
SMBNTencrypt(pSesInfo->password, server->cryptKey,
|
|
ntlm_session_key);
|
|
|
|
if (first_time)
|
|
cifs_calculate_mac_key(&server->mac_signing_key,
|
|
ntlm_session_key,
|
|
pSesInfo->password);
|
|
|
|
rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info);
|
|
}
|
|
if (rc) {
|
|
cERROR(1, ("Send error in SessSetup = %d", rc));
|
|
} else {
|
|
cFYI(1, ("CIFS Session Established successfully"));
|
|
pSesInfo->status = CifsGood;
|
|
}
|
|
|
|
ss_err_exit:
|
|
return rc;
|
|
}
|
|
|