/*
* fs/cifs/connect.c
*
- * Copyright (C) International Business Machines Corp., 2002,2008
+ * Copyright (C) International Business Machines Corp., 2002,2009
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
#include <linux/string.h>
#include <linux/list.h>
#include <linux/wait.h>
-#include <linux/ipv6.h>
+#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/ctype.h>
#include <linux/utsname.h>
#include <linux/kthread.h>
#include <linux/pagevec.h>
#include <linux/freezer.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
+#include <linux/inet.h>
+#include <net/ipv6.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
char *domainname;
char *UNC;
char *UNCip;
- char *in6_addr; /* ipv6 address as human readable form of in6_addr */
char *iocharset; /* local code page for mapping to and from Unicode */
char source_rfc1001_name[16]; /* netbios name of client */
char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
mode_t file_mode;
mode_t dir_mode;
unsigned secFlg;
- bool rw:1;
bool retry:1;
bool intr:1;
bool setuids:1;
bool local_lease:1; /* check leases only on local system, not remote */
bool noblocksnd:1;
bool noautotune:1;
+ bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
unsigned int rsize;
unsigned int wsize;
- unsigned int sockopt;
+ bool sockopt_tcp_nodelay:1;
unsigned short int port;
char *prepath;
+ struct nls_table *local_nls;
};
static int ipv4_connect(struct TCP_Server_Info *server);
spin_unlock(&GlobalMid_Lock);
server->maxBuf = 0;
- cFYI(1, ("Reconnecting tcp session"));
+ cFYI(1, "Reconnecting tcp session");
/* before reconnecting the tcp session, mark the smb session (uid)
and the tid bad so they are not used until reconnected */
/* do not want to be sending data on a socket we are freeing */
mutex_lock(&server->srv_mutex);
if (server->ssocket) {
- cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state,
- server->ssocket->flags));
+ cFYI(1, "State: 0x%x Flags: 0x%lx", server->ssocket->state,
+ server->ssocket->flags);
kernel_sock_shutdown(server->ssocket, SHUT_WR);
- cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx",
+ cFYI(1, "Post shutdown state: 0x%x Flags: 0x%lx",
server->ssocket->state,
- server->ssocket->flags));
+ server->ssocket->flags);
sock_release(server->ssocket);
server->ssocket = NULL;
}
else
rc = ipv4_connect(server);
if (rc) {
- cFYI(1, ("reconnect error %d", rc));
+ cFYI(1, "reconnect error %d", rc);
msleep(3000);
} else {
atomic_inc(&tcpSesReconnectCount);
/* check for plausible wct, bcc and t2 data and parm sizes */
/* check for parm and data offset going beyond end of smb */
if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
- cFYI(1, ("invalid transact2 word count"));
+ cFYI(1, "invalid transact2 word count");
return -EINVAL;
}
if (remaining == 0)
return 0;
else if (remaining < 0) {
- cFYI(1, ("total data %d smaller than data in frame %d",
- total_data_size, data_in_this_rsp));
+ cFYI(1, "total data %d smaller than data in frame %d",
+ total_data_size, data_in_this_rsp);
return -EINVAL;
} else {
- cFYI(1, ("missing %d bytes from transact2, check next response",
- remaining));
+ cFYI(1, "missing %d bytes from transact2, check next response",
+ remaining);
if (total_data_size > maxBufSize) {
- cERROR(1, ("TotalDataSize %d is over maximum buffer %d",
- total_data_size, maxBufSize));
+ cERROR(1, "TotalDataSize %d is over maximum buffer %d",
+ total_data_size, maxBufSize);
return -EINVAL;
}
return remaining;
total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) {
- cFYI(1, ("total data size of primary and secondary t2 differ"));
+ cFYI(1, "total data size of primary and secondary t2 differ");
}
total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount);
total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount);
if (remaining < total_in_buf2) {
- cFYI(1, ("transact2 2nd response contains too much data"));
+ cFYI(1, "transact2 2nd response contains too much data");
}
/* find end of first SMB data area */
pTargetSMB->smb_buf_length = byte_count;
if (remaining == total_in_buf2) {
- cFYI(1, ("found the last secondary response"));
+ cFYI(1, "found the last secondary response");
return 0; /* we are done */
} else /* more responses to go */
return 1;
int reconnect;
current->flags |= PF_MEMALLOC;
- cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current)));
+ cFYI(1, "Demultiplex PID: %d", task_pid_nr(current));
length = atomic_inc_return(&tcpSesAllocCount);
if (length > 1)
if (bigbuf == NULL) {
bigbuf = cifs_buf_get();
if (!bigbuf) {
- cERROR(1, ("No memory for large SMB response"));
+ cERROR(1, "No memory for large SMB response");
msleep(3000);
/* retry will check if exiting */
continue;
if (smallbuf == NULL) {
smallbuf = cifs_small_buf_get();
if (!smallbuf) {
- cERROR(1, ("No memory for SMB response"));
+ cERROR(1, "No memory for SMB response");
msleep(1000);
/* retry will check if exiting */
continue;
if (server->tcpStatus == CifsExiting) {
break;
} else if (server->tcpStatus == CifsNeedReconnect) {
- cFYI(1, ("Reconnect after server stopped responding"));
+ cFYI(1, "Reconnect after server stopped responding");
cifs_reconnect(server);
- cFYI(1, ("call to reconnect done"));
+ cFYI(1, "call to reconnect done");
csocket = server->ssocket;
continue;
} else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) {
continue;
} else if (length <= 0) {
if (server->tcpStatus == CifsNew) {
- cFYI(1, ("tcp session abend after SMBnegprot"));
+ cFYI(1, "tcp session abend after SMBnegprot");
/* some servers kill the TCP session rather than
returning an SMB negprot error, in which
case reconnecting here is not going to help,
break;
}
if (!try_to_freeze() && (length == -EINTR)) {
- cFYI(1, ("cifsd thread killed"));
+ cFYI(1, "cifsd thread killed");
break;
}
- cFYI(1, ("Reconnect after unexpected peek error %d",
- length));
+ cFYI(1, "Reconnect after unexpected peek error %d",
+ length);
cifs_reconnect(server);
csocket = server->ssocket;
wake_up(&server->response_q);
continue;
} else if (length < pdu_length) {
- cFYI(1, ("requested %d bytes but only got %d bytes",
- pdu_length, length));
+ cFYI(1, "requested %d bytes but only got %d bytes",
+ pdu_length, length);
pdu_length -= length;
msleep(1);
goto incomplete_rcv;
pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length);
smb_buffer->smb_buf_length = pdu_length;
- cFYI(1, ("rfc1002 length 0x%x", pdu_length+4));
+ cFYI(1, "rfc1002 length 0x%x", pdu_length+4);
if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) {
continue;
} else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
- cFYI(1, ("Good RFC 1002 session rsp"));
+ cFYI(1, "Good RFC 1002 session rsp");
continue;
} else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) {
/* we get this from Windows 98 instead of
an error on SMB negprot response */
- cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)",
- pdu_length));
+ cFYI(1, "Negative RFC1002 Session Response Error 0x%x)",
+ pdu_length);
if (server->tcpStatus == CifsNew) {
/* if nack on negprot (rather than
ret of smb negprot error) reconnecting
continue;
}
} else if (temp != (char) 0) {
- cERROR(1, ("Unknown RFC 1002 frame"));
+ cERROR(1, "Unknown RFC 1002 frame");
cifs_dump_mem(" Received Data: ", (char *)smb_buffer,
length);
cifs_reconnect(server);
/* 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));
+ 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);
length = 0;
continue;
} else if (length <= 0) {
- cERROR(1, ("Received no data, expecting %d",
- pdu_length - total_read));
+ cERROR(1, "Received no data, expecting %d",
+ pdu_length - total_read);
cifs_reconnect(server);
csocket = server->ssocket;
reconnect = 1;
}
} else {
if (!isLargeBuf) {
- cERROR(1,("1st trans2 resp needs bigbuf"));
+ cERROR(1, "1st trans2 resp needs bigbuf");
/* BB maybe we can fix this up, switch
to already allocated large buffer? */
} else {
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));
+ 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
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));
+ 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);
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"));
+ 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 */
char *data;
unsigned int temp_len, i, j;
char separator[2];
+ short int override_uid = -1;
+ short int override_gid = -1;
+ bool uid_specified = false;
+ bool gid_specified = false;
separator[0] = ',';
separator[1] = 0;
vol->target_rfc1001_name[0] = 0;
vol->linux_uid = current_uid(); /* use 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);
+
+ /* default to only allowing write access to owner of the mount */
+ vol->dir_mode = vol->file_mode = S_IRUGO | S_IXUGO | S_IWUSR;
/* 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;
+ /* default to using server inode numbers where available */
+ vol->server_ino = 1;
if (!options)
return 1;
separator[0] = options[4];
options += 5;
} else {
- cFYI(1, ("Null separator not allowed"));
+ cFYI(1, "Null separator not allowed");
}
}
}
strcpy(vol->password, value);
}
- } else if (strnicmp(data, "ip", 2) == 0) {
+ } else if (!strnicmp(data, "ip", 2) ||
+ !strnicmp(data, "addr", 4)) {
if (!value || !*value) {
vol->UNCip = NULL;
- } else if (strnlen(value, 35) < 35) {
+ } else if (strnlen(value, INET6_ADDRSTRLEN) <
+ INET6_ADDRSTRLEN) {
vol->UNCip = value;
} else {
printk(KERN_WARNING "CIFS: ip address "
}
} else if (strnicmp(data, "sec", 3) == 0) {
if (!value || !*value) {
- cERROR(1, ("no security value specified"));
+ cERROR(1, "no security value specified");
continue;
} else if (strnicmp(value, "krb5i", 5) == 0) {
vol->secFlg |= CIFSSEC_MAY_KRB5 |
} else if (strnicmp(value, "krb5p", 5) == 0) {
/* vol->secFlg |= CIFSSEC_MUST_SEAL |
CIFSSEC_MAY_KRB5; */
- cERROR(1, ("Krb5 cifs privacy not supported"));
+ cERROR(1, "Krb5 cifs privacy not supported");
return 1;
} else if (strnicmp(value, "krb5", 4) == 0) {
vol->secFlg |= CIFSSEC_MAY_KRB5;
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ } else if (strnicmp(value, "ntlmsspi", 8) == 0) {
+ vol->secFlg |= CIFSSEC_MAY_NTLMSSP |
+ CIFSSEC_MUST_SIGN;
+ } else if (strnicmp(value, "ntlmssp", 7) == 0) {
+ vol->secFlg |= CIFSSEC_MAY_NTLMSSP;
+#endif
} else if (strnicmp(value, "ntlmv2i", 7) == 0) {
vol->secFlg |= CIFSSEC_MAY_NTLMV2 |
CIFSSEC_MUST_SIGN;
} else if (strnicmp(value, "none", 4) == 0) {
vol->nullauth = 1;
} else {
- cERROR(1, ("bad security option: %s", value));
+ cERROR(1, "bad security option: %s", value);
return 1;
}
} else if ((strnicmp(data, "unc", 3) == 0)
a domain name and need special handling? */
if (strnlen(value, 256) < 256) {
vol->domainname = value;
- cFYI(1, ("Domain name set"));
+ cFYI(1, "Domain name set");
} else {
printk(KERN_WARNING "CIFS: domain name too "
"long\n");
strcpy(vol->prepath+1, value);
} else
strcpy(vol->prepath, value);
- cFYI(1, ("prefix path %s", vol->prepath));
+ cFYI(1, "prefix path %s", vol->prepath);
} else {
printk(KERN_WARNING "CIFS: prefix too long\n");
return 1;
vol->iocharset = value;
/* if iocharset not set then load_nls_default
is used by caller */
- cFYI(1, ("iocharset set to %s", value));
+ 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, "uid", 3) && value && *value) {
+ vol->linux_uid = simple_strtoul(value, &value, 0);
+ uid_specified = true;
+ } else if (!strnicmp(data, "forceuid", 8)) {
+ override_uid = 1;
+ } else if (!strnicmp(data, "noforceuid", 10)) {
+ override_uid = 0;
+ } else if (!strnicmp(data, "gid", 3) && value && *value) {
+ vol->linux_gid = simple_strtoul(value, &value, 0);
+ gid_specified = true;
+ } else if (!strnicmp(data, "forcegid", 8)) {
+ override_gid = 1;
+ } else if (!strnicmp(data, "noforcegid", 10)) {
+ override_gid = 0;
} else if (strnicmp(data, "file_mode", 4) == 0) {
if (value && *value) {
vol->file_mode =
simple_strtoul(value, &value, 0);
}
} else if (strnicmp(data, "sockopt", 5) == 0) {
- if (value && *value) {
- vol->sockopt =
- simple_strtoul(value, &value, 0);
+ if (!value || !*value) {
+ cERROR(1, "no socket option specified");
+ continue;
+ } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) {
+ vol->sockopt_tcp_nodelay = 1;
}
} else if (strnicmp(data, "netbiosname", 4) == 0) {
if (!value || !*value || (*value == ' ')) {
- cFYI(1, ("invalid (empty) netbiosname"));
+ cFYI(1, "invalid (empty) netbiosname");
} else {
memset(vol->source_rfc1001_name, 0x20, 15);
for (i = 0; i < 15; i++) {
} else if (strnicmp(data, "servern", 7) == 0) {
/* servernetbiosname specified override *SMBSERVER */
if (!value || !*value || (*value == ' ')) {
- cFYI(1, ("empty server netbiosname specified"));
+ cFYI(1, "empty server netbiosname specified");
} else {
/* last byte, type, is 0x20 for servr type */
memset(vol->target_rfc1001_name, 0x20, 16);
} else if (strnicmp(data, "guest", 5) == 0) {
/* ignore */
} else if (strnicmp(data, "rw", 2) == 0) {
- vol->rw = true;
+ /* ignore */
+ } else if (strnicmp(data, "ro", 2) == 0) {
+ /* ignore */
} else if (strnicmp(data, "noblocksend", 11) == 0) {
vol->noblocksnd = 1;
} else if (strnicmp(data, "noautotune", 10) == 0) {
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->intr = 0;
} else if (strnicmp(data, "intr", 4) == 0) {
vol->intr = 1;
+ } else if (strnicmp(data, "nostrictsync", 12) == 0) {
+ vol->nostrictsync = 1;
+ } else if (strnicmp(data, "strictsync", 10) == 0) {
+ vol->nostrictsync = 0;
} else if (strnicmp(data, "serverino", 7) == 0) {
vol->server_ino = 1;
} else if (strnicmp(data, "noserverino", 9) == 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 "
if (vol->UNCip == NULL)
vol->UNCip = &vol->UNC[2];
+ if (uid_specified)
+ vol->override_uid = override_uid;
+ else if (override_uid == 1)
+ printk(KERN_NOTICE "CIFS: ignoring forceuid mount option "
+ "specified with no uid= option.\n");
+
+ if (gid_specified)
+ vol->override_gid = override_gid;
+ else if (override_gid == 1)
+ printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
+ "specified with no gid= option.\n");
+
return 0;
}
static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr *addr)
+cifs_find_tcp_session(struct sockaddr_storage *addr, unsigned short int port)
{
struct list_head *tmp;
struct TCP_Server_Info *server;
if (server->tcpStatus == CifsNew)
continue;
- if (addr->sa_family == AF_INET &&
- (addr4->sin_addr.s_addr !=
- server->addr.sockAddr.sin_addr.s_addr))
- continue;
- else if (addr->sa_family == AF_INET6 &&
- memcmp(&server->addr.sockAddr6.sin6_addr,
- &addr6->sin6_addr, sizeof(addr6->sin6_addr)))
- continue;
+ switch (addr->ss_family) {
+ case AF_INET:
+ if (addr4->sin_addr.s_addr ==
+ server->addr.sockAddr.sin_addr.s_addr) {
+ addr4->sin_port = htons(port);
+ /* user overrode default port? */
+ if (addr4->sin_port) {
+ if (addr4->sin_port !=
+ server->addr.sockAddr.sin_port)
+ continue;
+ }
+ break;
+ } else
+ continue;
+
+ case AF_INET6:
+ if (ipv6_addr_equal(&addr6->sin6_addr,
+ &server->addr.sockAddr6.sin6_addr) &&
+ (addr6->sin6_scope_id ==
+ server->addr.sockAddr6.sin6_scope_id)) {
+ addr6->sin6_port = htons(port);
+ /* user overrode default port? */
+ if (addr6->sin6_port) {
+ if (addr6->sin6_port !=
+ server->addr.sockAddr6.sin6_port)
+ continue;
+ }
+ break;
+ } else
+ continue;
+ }
++server->srv_count;
write_unlock(&cifs_tcp_ses_lock);
- cFYI(1, ("Existing tcp session with server found"));
+ cFYI(1, "Existing tcp session with server found");
return server;
}
write_unlock(&cifs_tcp_ses_lock);
cifs_get_tcp_session(struct smb_vol *volume_info)
{
struct TCP_Server_Info *tcp_ses = NULL;
- struct sockaddr addr;
+ struct sockaddr_storage addr;
struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
int rc;
- memset(&addr, 0, sizeof(struct sockaddr));
+ memset(&addr, 0, sizeof(struct sockaddr_storage));
- 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)
- addr.sa_family = AF_INET6;
- } else {
- addr.sa_family = AF_INET;
- }
+ cFYI(1, "UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip);
- if (rc <= 0) {
+ if (volume_info->UNCip && volume_info->UNC) {
+ rc = cifs_convert_address(volume_info->UNCip, &addr);
+ if (!rc) {
/* we failed translating address */
rc = -EINVAL;
goto out_err;
}
-
- cFYI(1, ("UNC: %s ip: %s", volume_info->UNC,
- volume_info->UNCip));
} else if (volume_info->UNCip) {
/* BB using ip addr as tcp_ses name to connect to the
DFS root below */
- cERROR(1, ("Connecting to DFS root not implemented yet"));
+ cERROR(1, "Connecting to DFS root not implemented yet");
rc = -EINVAL;
goto out_err;
} else /* which tcp_sess DFS root would we conect to */ {
- cERROR(1,
- ("CIFS mount error: No UNC path (e.g. -o "
- "unc=//192.168.1.100/public) specified"));
+ cERROR(1, "CIFS mount error: No UNC path (e.g. -o "
+ "unc=//192.168.1.100/public) specified");
rc = -EINVAL;
goto out_err;
}
/* see if we already have a matching tcp_ses */
- tcp_ses = cifs_find_tcp_session(&addr);
+ tcp_ses = cifs_find_tcp_session(&addr, volume_info->port);
if (tcp_ses)
return tcp_ses;
tcp_ses->noblocksnd = volume_info->noblocksnd;
tcp_ses->noautotune = volume_info->noautotune;
+ tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay;
atomic_set(&tcp_ses->inFlight, 0);
init_waitqueue_head(&tcp_ses->response_q);
init_waitqueue_head(&tcp_ses->request_q);
tcp_ses->tcpStatus = CifsNew;
++tcp_ses->srv_count;
- if (addr.sa_family == AF_INET6) {
- cFYI(1, ("attempting ipv6 connect"));
+ if (addr.ss_family == 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 */
+ sin_server6->sin6_port = htons(volume_info->port);
memcpy(&tcp_ses->addr.sockAddr6, sin_server6,
sizeof(struct sockaddr_in6));
- sin_server6->sin6_port = htons(volume_info->port);
rc = ipv6_connect(tcp_ses);
} else {
+ sin_server->sin_port = htons(volume_info->port);
memcpy(&tcp_ses->addr.sockAddr, sin_server,
sizeof(struct sockaddr_in));
- sin_server->sin_port = htons(volume_info->port);
rc = ipv4_connect(tcp_ses);
}
if (rc < 0) {
- cERROR(1, ("Error connecting to socket. Aborting operation"));
+ cERROR(1, "Error connecting to socket. Aborting operation");
goto out_err;
}
tcp_ses, "cifsd");
if (IS_ERR(tcp_ses->tsk)) {
rc = PTR_ERR(tcp_ses->tsk);
- cERROR(1, ("error %d create cifsd thread", rc));
+ cERROR(1, "error %d create cifsd thread", rc);
module_put(THIS_MODULE);
goto out_err;
}
out_err:
if (tcp_ses) {
- kfree(tcp_ses->hostname);
+ if (!IS_ERR(tcp_ses->hostname))
+ kfree(tcp_ses->hostname);
if (tcp_ses->ssocket)
sock_release(tcp_ses->ssocket);
kfree(tcp_ses);
int xid;
struct TCP_Server_Info *server = ses->server;
+ cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count);
write_lock(&cifs_tcp_ses_lock);
if (--ses->ses_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
cifs_put_tcp_session(server);
}
+static struct cifsSesInfo *
+cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
+{
+ int rc = -ENOMEM, xid;
+ struct cifsSesInfo *ses;
+
+ xid = GetXid();
+
+ ses = cifs_find_smb_ses(server, volume_info->username);
+ if (ses) {
+ cFYI(1, "Existing smb sess found (status=%d)", ses->status);
+
+ /* existing SMB ses has a server reference already */
+ cifs_put_tcp_session(server);
+
+ mutex_lock(&ses->session_mutex);
+ rc = cifs_negotiate_protocol(xid, ses);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ /* problem -- put our ses reference */
+ cifs_put_smb_ses(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+ }
+ if (ses->need_reconnect) {
+ cFYI(1, "Session needs reconnect");
+ rc = cifs_setup_session(xid, ses,
+ volume_info->local_nls);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ /* problem -- put our reference */
+ cifs_put_smb_ses(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+ }
+ }
+ mutex_unlock(&ses->session_mutex);
+ FreeXid(xid);
+ return ses;
+ }
+
+ cFYI(1, "Existing smb sess not found");
+ ses = sesInfoAlloc();
+ if (ses == NULL)
+ goto get_ses_fail;
+
+ /* new SMB session uses our server ref */
+ ses->server = server;
+ if (server->addr.sockAddr6.sin6_family == AF_INET6)
+ sprintf(ses->serverName, "%pI6",
+ &server->addr.sockAddr6.sin6_addr);
+ else
+ sprintf(ses->serverName, "%pI4",
+ &server->addr.sockAddr.sin_addr.s_addr);
+
+ if (volume_info->username)
+ strncpy(ses->userName, volume_info->username,
+ MAX_USERNAME_SIZE);
+
+ /* volume_info->password freed at unmount */
+ if (volume_info->password) {
+ ses->password = kstrdup(volume_info->password, GFP_KERNEL);
+ if (!ses->password)
+ goto get_ses_fail;
+ }
+ if (volume_info->domainname) {
+ int len = strlen(volume_info->domainname);
+ ses->domainName = kmalloc(len + 1, GFP_KERNEL);
+ if (ses->domainName)
+ strcpy(ses->domainName, volume_info->domainname);
+ }
+ ses->linux_uid = volume_info->linux_uid;
+ ses->overrideSecFlg = volume_info->secFlg;
+
+ mutex_lock(&ses->session_mutex);
+ rc = cifs_negotiate_protocol(xid, ses);
+ if (!rc)
+ rc = cifs_setup_session(xid, ses, volume_info->local_nls);
+ mutex_unlock(&ses->session_mutex);
+ if (rc)
+ goto get_ses_fail;
+
+ /* success, put it on the list */
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&ses->smb_ses_list, &server->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ FreeXid(xid);
+ return ses;
+
+get_ses_fail:
+ sesInfoFree(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+}
+
static struct cifsTconInfo *
cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
{
int xid;
struct cifsSesInfo *ses = tcon->ses;
+ cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count);
write_lock(&cifs_tcp_ses_lock);
if (--tcon->tc_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
CIFSSMBTDis(xid, tcon);
_FreeXid(xid);
- DeleteTconOplockQEntries(tcon);
tconInfoFree(tcon);
cifs_put_smb_ses(ses);
}
+static struct cifsTconInfo *
+cifs_get_tcon(struct cifsSesInfo *ses, struct smb_vol *volume_info)
+{
+ int rc, xid;
+ struct cifsTconInfo *tcon;
+
+ tcon = cifs_find_tcon(ses, volume_info->UNC);
+ if (tcon) {
+ cFYI(1, "Found match on UNC path");
+ /* existing tcon already has a reference */
+ cifs_put_smb_ses(ses);
+ if (tcon->seal != volume_info->seal)
+ cERROR(1, "transport encryption setting "
+ "conflicts with existing tid");
+ return tcon;
+ }
+
+ tcon = tconInfoAlloc();
+ if (tcon == NULL) {
+ rc = -ENOMEM;
+ goto out_fail;
+ }
+
+ tcon->ses = ses;
+ if (volume_info->password) {
+ tcon->password = kstrdup(volume_info->password, GFP_KERNEL);
+ if (!tcon->password) {
+ rc = -ENOMEM;
+ goto out_fail;
+ }
+ }
+
+ if (strchr(volume_info->UNC + 3, '\\') == NULL
+ && strchr(volume_info->UNC + 3, '/') == NULL) {
+ cERROR(1, "Missing share name");
+ rc = -ENODEV;
+ goto out_fail;
+ }
+
+ /* BB Do we need to wrap session_mutex around
+ * this TCon call and Unix SetFS as
+ * we do on SessSetup and reconnect? */
+ xid = GetXid();
+ rc = CIFSTCon(xid, ses, volume_info->UNC, tcon, volume_info->local_nls);
+ FreeXid(xid);
+ cFYI(1, "CIFS Tcon rc = %d", rc);
+ if (rc)
+ goto out_fail;
+
+ if (volume_info->nodfs) {
+ tcon->Flags &= ~SMB_SHARE_IS_IN_DFS;
+ cFYI(1, "DFS disabled (%d)", tcon->Flags);
+ }
+ tcon->seal = volume_info->seal;
+ /* 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;
+ tcon->local_lease = volume_info->local_lease;
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&tcon->tcon_list, &ses->tcon_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ return tcon;
+
+out_fail:
+ tconInfoFree(tcon);
+ return ERR_PTR(rc);
+}
+
+
int
get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
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));
+ cFYI(1, "CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid);
kfree(temp_unc);
}
if (rc == 0)
ipv4_connect(struct TCP_Server_Info *server)
{
int rc = 0;
+ int val;
bool connected = false;
__be16 orig_port = 0;
struct socket *socket = server->ssocket;
rc = sock_create_kern(PF_INET, SOCK_STREAM,
IPPROTO_TCP, &socket);
if (rc < 0) {
- cERROR(1, ("Error %d creating socket", rc));
+ cERROR(1, "Error %d creating socket", rc);
return rc;
}
/* BB other socket options to set KEEPALIVE, NODELAY? */
- cFYI(1, ("Socket created"));
+ cFYI(1, "Socket created");
server->ssocket = socket;
socket->sk->sk_allocation = GFP_NOFS;
cifs_reclassify_socket4(socket);
if (!connected) {
if (orig_port)
server->addr.sockAddr.sin_port = orig_port;
- cFYI(1, ("Error %d connecting to server via ipv4", rc));
+ cFYI(1, "Error %d connecting to server via ipv4", rc);
sock_release(socket);
server->ssocket = NULL;
return rc;
* user space buffer
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
- socket->sk->sk_sndtimeo = 3 * HZ;
+ socket->sk->sk_sndtimeo = 5 * HZ;
/* make the bufsizes depend on wsize/rsize and max requests */
if (server->noautotune) {
socket->sk->sk_rcvbuf = 140 * 1024;
}
- cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
+ if (server->tcp_nodelay) {
+ val = 1;
+ rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+ (char *)&val, sizeof(val));
+ if (rc)
+ cFYI(1, "set TCP_NODELAY socket option error %d", rc);
+ }
+
+ cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
socket->sk->sk_sndbuf,
- socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo));
+ socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);
/* send RFC1001 sessinit */
if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) {
smb_buf = (struct smb_hdr *)ses_init_buf;
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
- rc = smb_send(socket, smb_buf, 0x44,
- (struct sockaddr *) &server->addr.sockAddr,
- server->noblocksnd);
+ rc = smb_send(server, smb_buf, 0x44);
kfree(ses_init_buf);
msleep(1); /* RFC1001 layer in at least one server
requires very short break before negprot
ipv6_connect(struct TCP_Server_Info *server)
{
int rc = 0;
+ int val;
bool connected = false;
__be16 orig_port = 0;
struct socket *socket = server->ssocket;
rc = sock_create_kern(PF_INET6, SOCK_STREAM,
IPPROTO_TCP, &socket);
if (rc < 0) {
- cERROR(1, ("Error %d creating ipv6 socket", rc));
+ cERROR(1, "Error %d creating ipv6 socket", rc);
socket = NULL;
return rc;
}
/* BB other socket options to set KEEPALIVE, NODELAY? */
- cFYI(1, ("ipv6 Socket created"));
+ cFYI(1, "ipv6 Socket created");
server->ssocket = socket;
socket->sk->sk_allocation = GFP_NOFS;
cifs_reclassify_socket6(socket);
if (!connected) {
if (orig_port)
server->addr.sockAddr6.sin6_port = orig_port;
- cFYI(1, ("Error %d connecting to server via ipv6", rc));
+ cFYI(1, "Error %d connecting to server via ipv6", rc);
sock_release(socket);
server->ssocket = NULL;
return rc;
* user space buffer
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
- socket->sk->sk_sndtimeo = 3 * HZ;
+ socket->sk->sk_sndtimeo = 5 * HZ;
+
+ if (server->tcp_nodelay) {
+ val = 1;
+ rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+ (char *)&val, sizeof(val));
+ if (rc)
+ cFYI(1, "set TCP_NODELAY socket option error %d", rc);
+ }
+
server->ssocket = socket;
return rc;
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"));
+ 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"));
+ cFYI(1, "Unix extensions disabled so not set on reconnect");
return;
}
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"));
+ 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"));
+ cERROR(1, "possible reconnect error");
+ cERROR(1, "server disabled POSIX path support");
}
}
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"));
+ 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"));
+ cFYI(1, "negotiate posix pathnames");
if (sb)
CIFS_SB(sb)->mnt_cifs_flags |=
CIFS_MOUNT_POSIX_PATHS;
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(DBG2, "larger reads not supported by srv");
}
}
- cFYI(1, ("Negotiate caps 0x%x", (int)cap));
+ cFYI(1, "Negotiate caps 0x%x", (int)cap);
#ifdef CONFIG_CIFS_DEBUG2
if (cap & CIFS_UNIX_FCNTL_CAP)
- cFYI(1, ("FCNTL cap"));
+ cFYI(1, "FCNTL cap");
if (cap & CIFS_UNIX_EXTATTR_CAP)
- cFYI(1, ("EXTATTR cap"));
+ cFYI(1, "EXTATTR cap");
if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP)
- cFYI(1, ("POSIX path cap"));
+ cFYI(1, "POSIX path cap");
if (cap & CIFS_UNIX_XATTR_CAP)
- cFYI(1, ("XATTR cap"));
+ cFYI(1, "XATTR cap");
if (cap & CIFS_UNIX_POSIX_ACL_CAP)
- cFYI(1, ("POSIX ACL cap"));
+ cFYI(1, "POSIX ACL cap");
if (cap & CIFS_UNIX_LARGE_READ_CAP)
- cFYI(1, ("very large read cap"));
+ cFYI(1, "very large read cap");
if (cap & CIFS_UNIX_LARGE_WRITE_CAP)
- cFYI(1, ("very 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"));
+ cFYI(1, "resetting capabilities failed");
} else
- cERROR(1, ("Negotiating Unix capabilities "
+ 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."));
+ "option.");
}
}
struct cifs_sb_info *cifs_sb)
{
if (pvolume_info->rsize > CIFSMaxBufSize) {
- cERROR(1, ("rsize %d too large, using MaxBufSize",
- pvolume_info->rsize));
+ cERROR(1, "rsize %d too large, using MaxBufSize",
+ pvolume_info->rsize);
cifs_sb->rsize = CIFSMaxBufSize;
} else if ((pvolume_info->rsize) &&
(pvolume_info->rsize <= CIFSMaxBufSize))
cifs_sb->rsize = CIFSMaxBufSize;
if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
- cERROR(1, ("wsize %d too large, using 4096 instead",
- pvolume_info->wsize));
+ cERROR(1, "wsize %d too large, using 4096 instead",
+ pvolume_info->wsize);
cifs_sb->wsize = 4096;
} else if (pvolume_info->wsize)
cifs_sb->wsize = pvolume_info->wsize;
if (cifs_sb->rsize < 2048) {
cifs_sb->rsize = 2048;
/* Windows ME may prefer this */
- cFYI(1, ("readsize set to minimum: 2048"));
+ cFYI(1, "readsize set to minimum: 2048");
}
/* calculate prepath */
cifs_sb->prepath = pvolume_info->prepath;
cifs_sb->mnt_gid = pvolume_info->linux_gid;
cifs_sb->mnt_file_mode = pvolume_info->file_mode;
cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;
- cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
- cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
+ cFYI(1, "file mode: 0x%x dir mode: 0x%x",
+ cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode);
if (pvolume_info->noperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
if (pvolume_info->nobrl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+ if (pvolume_info->nostrictsync)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;
if (pvolume_info->mand_lock)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;
if (pvolume_info->cifs_acl)
if (pvolume_info->dynperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
if (pvolume_info->direct_io) {
- cFYI(1, ("mounting share using direct i/o"));
+ cFYI(1, "mounting share using direct i/o");
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
}
if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
- cERROR(1, ("mount option dynperm ignored if cifsacl "
- "mount option supported"));
+ cERROR(1, "mount option dynperm ignored if cifsacl "
+ "mount option supported");
}
+static int
+is_path_accessible(int xid, struct cifsTconInfo *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+ int rc;
+ FILE_ALL_INFO *pfile_info;
+
+ pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+ if (pfile_info == NULL)
+ return -ENOMEM;
+
+ rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info,
+ 0 /* not legacy */, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ kfree(pfile_info);
+ return rc;
+}
+
+static void
+cleanup_volume_info(struct smb_vol **pvolume_info)
+{
+ struct smb_vol *volume_info;
+
+ if (!pvolume_info || !*pvolume_info)
+ return;
+
+ volume_info = *pvolume_info;
+ kzfree(volume_info->password);
+ kfree(volume_info->UNC);
+ kfree(volume_info->prepath);
+ kfree(volume_info);
+ *pvolume_info = NULL;
+ return;
+}
+
+#ifdef CONFIG_CIFS_DFS_UPCALL
+/* build_path_to_root returns full path to root when
+ * we do not have an exiting connection (tcon) */
+static char *
+build_unc_path_to_root(const struct smb_vol *volume_info,
+ const struct cifs_sb_info *cifs_sb)
+{
+ char *full_path;
+
+ int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1);
+ full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL);
+ if (full_path == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ strncpy(full_path, volume_info->UNC, unc_len);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+ int i;
+ for (i = 0; i < unc_len; i++) {
+ if (full_path[i] == '\\')
+ full_path[i] = '/';
+ }
+ }
+
+ if (cifs_sb->prepathlen)
+ strncpy(full_path + unc_len, cifs_sb->prepath,
+ cifs_sb->prepathlen);
+
+ full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */
+ return full_path;
+}
+#endif
+
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
- char *mount_data, const char *devname)
+ char *mount_data_global, const char *devname)
{
- int rc = 0;
+ int rc;
int xid;
struct smb_vol *volume_info;
- struct cifsSesInfo *pSesInfo = NULL;
- struct cifsTconInfo *tcon = NULL;
- struct TCP_Server_Info *srvTcp = NULL;
+ struct cifsSesInfo *pSesInfo;
+ struct cifsTconInfo *tcon;
+ struct TCP_Server_Info *srvTcp;
+ char *full_path;
+ char *mount_data = mount_data_global;
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ struct dfs_info3_param *referrals = NULL;
+ unsigned int num_referrals = 0;
+ int referral_walks_count = 0;
+try_mount_again:
+#endif
+ rc = 0;
+ tcon = NULL;
+ pSesInfo = NULL;
+ srvTcp = NULL;
+ full_path = NULL;
xid = GetXid();
}
if (volume_info->nullauth) {
- cFYI(1, ("null user"));
+ 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));
+ cFYI(1, "Username: %s", volume_info->username);
} else {
cifserror("No username specified");
/* In userspace mount helper we can get user name from alternate
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 */
+ /* load_nls_default cannot return null */
+ volume_info->local_nls = load_nls_default();
} 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));
+ volume_info->local_nls = load_nls(volume_info->iocharset);
+ if (volume_info->local_nls == NULL) {
+ cERROR(1, "CIFS mount error: iocharset %s not found",
+ volume_info->iocharset);
rc = -ELIBACC;
goto out;
}
}
+ cifs_sb->local_nls = volume_info->local_nls;
/* get a reference to a tcp session */
srvTcp = cifs_get_tcp_session(volume_info);
goto out;
}
- pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username);
- if (pSesInfo) {
- cFYI(1, ("Existing smb sess found (status=%d)",
- pSesInfo->status));
- /*
- * The existing SMB session already has a reference to srvTcp,
- * so we can put back the extra one we got before
- */
- cifs_put_tcp_session(srvTcp);
-
- down(&pSesInfo->sesSem);
- if (pSesInfo->need_reconnect) {
- 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;
- goto mount_fail_check;
- }
-
- /* new SMB session uses our srvTcp ref */
- pSesInfo->server = srvTcp;
- if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6)
- sprintf(pSesInfo->serverName, "%pI6",
- &srvTcp->addr.sockAddr6.sin6_addr);
- else
- sprintf(pSesInfo->serverName, "%pI4",
- &srvTcp->addr.sockAddr.sin_addr.s_addr);
-
- write_lock(&cifs_tcp_ses_lock);
- list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
- write_unlock(&cifs_tcp_ses_lock);
-
- /* volume_info->password freed at unmount */
- if (volume_info->password) {
- pSesInfo->password = kstrdup(volume_info->password,
- GFP_KERNEL);
- if (!pSesInfo->password) {
- rc = -ENOMEM;
- goto mount_fail_check;
- }
- }
- 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);
+ /* get a reference to a SMB session */
+ pSesInfo = cifs_get_smb_ses(srvTcp, volume_info);
+ if (IS_ERR(pSesInfo)) {
+ rc = PTR_ERR(pSesInfo);
+ pSesInfo = NULL;
+ goto mount_fail_check;
}
- /* search for existing tcon to this server share */
- if (!rc) {
- setup_cifs_sb(volume_info, cifs_sb);
-
- tcon = cifs_find_tcon(pSesInfo, volume_info->UNC);
- if (tcon) {
- cFYI(1, ("Found match on UNC path"));
- /* existing tcon already has a reference */
- cifs_put_smb_ses(pSesInfo);
- if (tcon->seal != volume_info->seal)
- cERROR(1, ("transport encryption setting "
- "conflicts with existing tid"));
- } else {
- tcon = tconInfoAlloc();
- if (tcon == NULL) {
- rc = -ENOMEM;
- goto mount_fail_check;
- }
-
- tcon->ses = pSesInfo;
- if (volume_info->password) {
- tcon->password = kstrdup(volume_info->password,
- GFP_KERNEL);
- if (!tcon->password) {
- rc = -ENOMEM;
- goto mount_fail_check;
- }
- }
-
- /* check for null share name ie connect to dfs root */
- if ((strchr(volume_info->UNC + 3, '\\') == NULL)
- && (strchr(volume_info->UNC + 3, '/') == NULL)) {
- /* rc = connect_to_dfs_path(...) */
- cFYI(1, ("DFS root not supported"));
- rc = -ENODEV;
- goto mount_fail_check;
- } 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 (volume_info->nodfs) {
- tcon->Flags &= ~SMB_SHARE_IS_IN_DFS;
- cFYI(1, ("DFS disabled (%d)",
- tcon->Flags));
- }
- }
- if (rc)
- goto mount_fail_check;
- tcon->seal = volume_info->seal;
- write_lock(&cifs_tcp_ses_lock);
- list_add(&tcon->tcon_list, &pSesInfo->tcon_list);
- write_unlock(&cifs_tcp_ses_lock);
- }
-
- /* 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;
- tcon->local_lease = volume_info->local_lease;
- }
- if (pSesInfo) {
- if (pSesInfo->capabilities & CAP_LARGE_FILES) {
- sb->s_maxbytes = (u64) 1 << 63;
- } else
- sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */
- }
+ setup_cifs_sb(volume_info, cifs_sb);
+ if (pSesInfo->capabilities & CAP_LARGE_FILES)
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+ else
+ sb->s_maxbytes = MAX_NON_LFS;
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
sb->s_time_gran = 100;
-mount_fail_check:
- /* on error free sesinfo and tcon struct if needed */
- if (rc) {
- /* If find_unc succeeded then rc == 0 so we can not end */
- /* up accidently freeing someone elses tcon struct */
- if (tcon)
- cifs_put_tcon(tcon);
- else if (pSesInfo)
- cifs_put_smb_ses(pSesInfo);
- else
- cifs_put_tcp_session(srvTcp);
- goto out;
+ /* search for existing tcon to this server share */
+ tcon = cifs_get_tcon(pSesInfo, volume_info);
+ if (IS_ERR(tcon)) {
+ rc = PTR_ERR(tcon);
+ tcon = NULL;
+ goto remote_path_check;
}
+
cifs_sb->tcon = tcon;
/* do not care if following two calls succeed - informational */
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"));
+ 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,
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) {
- 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);
- kfree(volume_info);
- }
- 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);
+remote_path_check:
+ /* check if a whole path (including prepath) is not remote */
+ if (!rc && cifs_sb->prepathlen && tcon) {
+ /* build_path_to_root works only when we have a valid tcon */
+ full_path = cifs_build_path_to_root(cifs_sb);
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto mount_fail_check;
}
- *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++;
+ rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
+ if (rc != -EREMOTE) {
+ kfree(full_path);
+ goto mount_fail_check;
}
- 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"));
+ kfree(full_path);
+ }
+
+ /* get referral if needed */
+ if (rc == -EREMOTE) {
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (referral_walks_count > MAX_NESTED_LINKS) {
+ /*
+ * BB: when we implement proper loop detection,
+ * we will remove this check. But now we need it
+ * to prevent an indefinite loop if 'DFS tree' is
+ * misconfigured (i.e. has loops).
+ */
+ rc = -ELOOP;
+ goto mount_fail_check;
}
- } 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++;
+ /* 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));
+ full_path = build_unc_path_to_root(volume_info, cifs_sb);
+ if (IS_ERR(full_path)) {
+ rc = PTR_ERR(full_path);
+ goto mount_fail_check;
}
- 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;
+ cFYI(1, "Getting referral for: %s", full_path);
+ rc = get_dfs_path(xid, pSesInfo , full_path + 1,
+ cifs_sb->local_nls, &num_referrals, &referrals,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (!rc && num_referrals > 0) {
+ char *fake_devname = NULL;
- 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 (mount_data != mount_data_global)
+ kfree(mount_data);
- if (action & GUEST_LOGIN)
- cFYI(1, ("Guest login"));
- /* Do we want to set anything in SesInfo struct when guest login? */
+ mount_data = cifs_compose_mount_options(
+ cifs_sb->mountdata, full_path + 1,
+ referrals, &fake_devname);
- 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));
- }
+ free_dfs_info_array(referrals, num_referrals);
+ kfree(fake_devname);
+ kfree(full_path);
- 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"));
+ if (IS_ERR(mount_data)) {
+ rc = PTR_ERR(mount_data);
+ mount_data = NULL;
+ goto mount_fail_check;
}
- } 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 */ );
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
- 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);
+ cleanup_volume_info(&volume_info);
+ referral_walks_count++;
+ FreeXid(xid);
+ goto try_mount_again;
}
+#else /* No DFS support, return error on mount */
+ rc = -EOPNOTSUPP;
+#endif
+ }
- /* 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);
+mount_fail_check:
+ /* on error free sesinfo and tcon struct if needed */
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;
+ if (mount_data != mount_data_global)
+ kfree(mount_data);
+ /* If find_unc succeeded then rc == 0 so we can not end */
+ /* up accidently freeing someone elses tcon struct */
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
+ else
+ cifs_put_tcp_session(srvTcp);
+ goto out;
}
- cifs_buf_release(smb_buffer);
-
+ /* 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 */
+ cleanup_volume_info(&volume_info);
+ FreeXid(xid);
return rc;
}
TCONX_RSP *pSMBr;
unsigned char *bcc_ptr;
int rc = 0;
- int length;
+ int length, bytes_left;
__u16 count;
if (ses == NULL)
return -EIO;
smb_buffer = cifs_buf_get();
- if (smb_buffer == NULL) {
+ if (smb_buffer == NULL)
return -ENOMEM;
- }
+
smb_buffer_response = smb_buffer;
header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
by Samba (not sure whether other servers allow
NTLMv2 password here) */
#ifdef CONFIG_CIFS_WEAK_PW_HASH
- if ((extended_security & CIFSSEC_MAY_LANMAN) &&
+ if ((global_secflags & CIFSSEC_MAY_LANMAN) &&
(ses->server->secType == LANMAN))
calc_lanman_hash(tcon->password, ses->server->cryptKey,
ses->server->secMode &
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)) {
+ bool is_unicode;
+
tcon->tidStatus = CifsGood;
tcon->need_reconnect = false;
tcon->tid = smb_buffer_response->Tid;
bcc_ptr = pByteArea(smb_buffer_response);
- length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
+ bytes_left = BCC(smb_buffer_response);
+ length = strnlen(bcc_ptr, bytes_left - 2);
+ if (smb_buffer->Flags2 & SMBFLG2_UNICODE)
+ is_unicode = true;
+ else
+ is_unicode = false;
+
+
/* 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"));
+ 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"));
+ cFYI(1, "disk share connection");
}
}
bcc_ptr += length + 1;
+ bytes_left -= (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*/
- }
+
+ /* mostly informational -- no need to fail on error here */
+ kfree(tcon->nativeFileSystem);
+ tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr,
+ bytes_left, is_unicode,
+ nls_codepage);
+
+ cFYI(1, "nativeFileSystem=%s", tcon->nativeFileSystem);
+
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));
+ 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;
return rc;
}
-int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
- struct nls_table *nls_info)
+int cifs_negotiate_protocol(unsigned int xid, struct cifsSesInfo *ses)
{
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);
+ struct TCP_Server_Info *server = ses->server;
- }
- first_time = 1;
+ /* only send once per connect */
+ if (server->maxBuf != 0)
+ return 0;
+
+ rc = CIFSSMBNegotiate(xid, ses);
+ if (rc == -EAGAIN) {
+ /* retry only once on 1st time connection */
+ rc = CIFSSMBNegotiate(xid, ses);
+ 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);
- 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;
- }
+ return rc;
+}
- } 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);
+int cifs_setup_session(unsigned int xid, struct cifsSesInfo *ses,
+ struct nls_table *nls_info)
+{
+ int rc = 0;
+ struct TCP_Server_Info *server = ses->server;
- if (first_time)
- cifs_calculate_mac_key(&server->mac_signing_key,
- ntlm_session_key,
- pSesInfo->password);
+ ses->flags = 0;
+ ses->capabilities = server->capabilities;
+ if (linuxExtEnabled == 0)
+ ses->capabilities &= (~CAP_UNIX);
- rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info);
- }
+ cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
+ server->secMode, server->capabilities, server->timeAdj);
+
+ rc = CIFS_SessSetup(xid, ses, nls_info);
if (rc) {
- cERROR(1, ("Send error in SessSetup = %d", rc));
+ cERROR(1, "Send error in SessSetup = %d", rc);
} else {
- cFYI(1, ("CIFS Session Established successfully"));
- spin_lock(&GlobalMid_Lock);
- pSesInfo->status = CifsGood;
- pSesInfo->need_reconnect = false;
- spin_unlock(&GlobalMid_Lock);
+ cFYI(1, "CIFS Session Established successfully");
+ spin_lock(&GlobalMid_Lock);
+ ses->status = CifsGood;
+ ses->need_reconnect = false;
+ spin_unlock(&GlobalMid_Lock);
}
-ss_err_exit:
return rc;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff