mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Cyrill Gorcunov](/assets/img/avatar_default.png)
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
554 lines
16 KiB
C
554 lines
16 KiB
C
/*
|
|
* fs/cifs/sess.c
|
|
*
|
|
* SMB/CIFS session setup handling routines
|
|
*
|
|
* Copyright (c) International Business Machines Corp., 2006, 2007
|
|
* Author(s): Steve French (sfrench@us.ibm.com)
|
|
*
|
|
* This library is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published
|
|
* by the Free Software Foundation; either version 2.1 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "cifspdu.h"
|
|
#include "cifsglob.h"
|
|
#include "cifsproto.h"
|
|
#include "cifs_unicode.h"
|
|
#include "cifs_debug.h"
|
|
#include "ntlmssp.h"
|
|
#include "nterr.h"
|
|
#include <linux/utsname.h>
|
|
|
|
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
|
|
unsigned char *p24);
|
|
|
|
static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
|
|
{
|
|
__u32 capabilities = 0;
|
|
|
|
/* init fields common to all four types of SessSetup */
|
|
/* note that header is initialized to zero in header_assemble */
|
|
pSMB->req.AndXCommand = 0xFF;
|
|
pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
|
|
pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
|
|
|
|
/* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
|
|
|
|
/* BB verify whether signing required on neg or just on auth frame
|
|
(and NTLM case) */
|
|
|
|
capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
|
|
CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
|
|
|
|
if (ses->server->secMode &
|
|
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE;
|
|
capabilities |= CAP_UNICODE;
|
|
}
|
|
if (ses->capabilities & CAP_STATUS32) {
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS;
|
|
capabilities |= CAP_STATUS32;
|
|
}
|
|
if (ses->capabilities & CAP_DFS) {
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_DFS;
|
|
capabilities |= CAP_DFS;
|
|
}
|
|
if (ses->capabilities & CAP_UNIX) {
|
|
capabilities |= CAP_UNIX;
|
|
}
|
|
|
|
/* BB check whether to init vcnum BB */
|
|
return capabilities;
|
|
}
|
|
|
|
static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
|
|
const struct nls_table *nls_cp)
|
|
{
|
|
char *bcc_ptr = *pbcc_area;
|
|
int bytes_ret = 0;
|
|
|
|
/* BB FIXME add check that strings total less
|
|
than 335 or will need to send them as arrays */
|
|
|
|
/* unicode strings, must be word aligned before the call */
|
|
/* if ((long) bcc_ptr % 2) {
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
} */
|
|
/* copy user */
|
|
if (ses->userName == NULL) {
|
|
/* null user mount */
|
|
*bcc_ptr = 0;
|
|
*(bcc_ptr+1) = 0;
|
|
} else { /* 300 should be long enough for any conceivable user name */
|
|
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
|
|
300, nls_cp);
|
|
}
|
|
bcc_ptr += 2 * bytes_ret;
|
|
bcc_ptr += 2; /* account for null termination */
|
|
/* copy domain */
|
|
if (ses->domainName == NULL) {
|
|
/* Sending null domain better than using a bogus domain name (as
|
|
we did briefly in 2.6.18) since server will use its default */
|
|
*bcc_ptr = 0;
|
|
*(bcc_ptr+1) = 0;
|
|
bytes_ret = 0;
|
|
} else
|
|
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
|
|
256, nls_cp);
|
|
bcc_ptr += 2 * bytes_ret;
|
|
bcc_ptr += 2; /* account for null terminator */
|
|
|
|
/* Copy OS version */
|
|
bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
|
|
nls_cp);
|
|
bcc_ptr += 2 * bytes_ret;
|
|
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release,
|
|
32, nls_cp);
|
|
bcc_ptr += 2 * bytes_ret;
|
|
bcc_ptr += 2; /* trailing null */
|
|
|
|
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
|
|
32, nls_cp);
|
|
bcc_ptr += 2 * bytes_ret;
|
|
bcc_ptr += 2; /* trailing null */
|
|
|
|
*pbcc_area = bcc_ptr;
|
|
}
|
|
|
|
static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
|
|
const struct nls_table *nls_cp)
|
|
{
|
|
char *bcc_ptr = *pbcc_area;
|
|
|
|
/* copy user */
|
|
/* BB what about null user mounts - check that we do this BB */
|
|
/* copy user */
|
|
if (ses->userName == NULL) {
|
|
/* BB what about null user mounts - check that we do this BB */
|
|
} else { /* 300 should be long enough for any conceivable user name */
|
|
strncpy(bcc_ptr, ses->userName, 300);
|
|
}
|
|
/* BB improve check for overflow */
|
|
bcc_ptr += strnlen(ses->userName, 300);
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++; /* account for null termination */
|
|
|
|
/* copy domain */
|
|
|
|
if (ses->domainName != NULL) {
|
|
strncpy(bcc_ptr, ses->domainName, 256);
|
|
bcc_ptr += strnlen(ses->domainName, 256);
|
|
} /* else we will send a null domain name
|
|
so the server will default to its own domain */
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
|
|
/* BB check for overflow here */
|
|
|
|
strcpy(bcc_ptr, "Linux version ");
|
|
bcc_ptr += strlen("Linux version ");
|
|
strcpy(bcc_ptr, init_utsname()->release);
|
|
bcc_ptr += strlen(init_utsname()->release) + 1;
|
|
|
|
strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
|
|
bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
|
|
|
|
*pbcc_area = bcc_ptr;
|
|
}
|
|
|
|
static int decode_unicode_ssetup(char **pbcc_area, int bleft,
|
|
struct cifsSesInfo *ses,
|
|
const struct nls_table *nls_cp)
|
|
{
|
|
int rc = 0;
|
|
int words_left, len;
|
|
char *data = *pbcc_area;
|
|
|
|
|
|
|
|
cFYI(1, ("bleft %d", bleft));
|
|
|
|
|
|
/* SMB header is unaligned, so cifs servers word align start of
|
|
Unicode strings */
|
|
data++;
|
|
bleft--; /* Windows servers do not always double null terminate
|
|
their final Unicode string - in which case we
|
|
now will not attempt to decode the byte of junk
|
|
which follows it */
|
|
|
|
words_left = bleft / 2;
|
|
|
|
/* save off server operating system */
|
|
len = UniStrnlen((wchar_t *) data, words_left);
|
|
|
|
/* 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 (len >= words_left)
|
|
return rc;
|
|
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
/* UTF-8 string will not grow more than four times as big as UCS-16 */
|
|
ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
|
|
if (ses->serverOS != NULL) {
|
|
cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len,
|
|
nls_cp);
|
|
}
|
|
data += 2 * (len + 1);
|
|
words_left -= len + 1;
|
|
|
|
/* save off server network operating system */
|
|
len = UniStrnlen((wchar_t *) data, words_left);
|
|
|
|
if (len >= words_left)
|
|
return rc;
|
|
|
|
if (ses->serverNOS)
|
|
kfree(ses->serverNOS);
|
|
ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
|
|
if (ses->serverNOS != NULL) {
|
|
cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
|
|
nls_cp);
|
|
if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) {
|
|
cFYI(1, ("NT4 server"));
|
|
ses->flags |= CIFS_SES_NT4;
|
|
}
|
|
}
|
|
data += 2 * (len + 1);
|
|
words_left -= len + 1;
|
|
|
|
/* save off server domain */
|
|
len = UniStrnlen((wchar_t *) data, words_left);
|
|
|
|
if (len > words_left)
|
|
return rc;
|
|
|
|
if (ses->serverDomain)
|
|
kfree(ses->serverDomain);
|
|
ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */
|
|
if (ses->serverDomain != NULL) {
|
|
cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
|
|
nls_cp);
|
|
ses->serverDomain[2*len] = 0;
|
|
ses->serverDomain[(2*len) + 1] = 0;
|
|
}
|
|
data += 2 * (len + 1);
|
|
words_left -= len + 1;
|
|
|
|
cFYI(1, ("words left: %d", words_left));
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int decode_ascii_ssetup(char **pbcc_area, int bleft,
|
|
struct cifsSesInfo *ses,
|
|
const struct nls_table *nls_cp)
|
|
{
|
|
int rc = 0;
|
|
int len;
|
|
char *bcc_ptr = *pbcc_area;
|
|
|
|
cFYI(1, ("decode sessetup ascii. bleft %d", bleft));
|
|
|
|
len = strnlen(bcc_ptr, bleft);
|
|
if (len >= bleft)
|
|
return rc;
|
|
|
|
if (ses->serverOS)
|
|
kfree(ses->serverOS);
|
|
|
|
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
|
|
if (ses->serverOS)
|
|
strncpy(ses->serverOS, bcc_ptr, len);
|
|
if (strncmp(ses->serverOS, "OS/2", 4) == 0) {
|
|
cFYI(1, ("OS/2 server"));
|
|
ses->flags |= CIFS_SES_OS2;
|
|
}
|
|
|
|
bcc_ptr += len + 1;
|
|
bleft -= len + 1;
|
|
|
|
len = strnlen(bcc_ptr, bleft);
|
|
if (len >= bleft)
|
|
return rc;
|
|
|
|
if (ses->serverNOS)
|
|
kfree(ses->serverNOS);
|
|
|
|
ses->serverNOS = kzalloc(len + 1, GFP_KERNEL);
|
|
if (ses->serverNOS)
|
|
strncpy(ses->serverNOS, bcc_ptr, len);
|
|
|
|
bcc_ptr += len + 1;
|
|
bleft -= len + 1;
|
|
|
|
len = strnlen(bcc_ptr, bleft);
|
|
if (len > bleft)
|
|
return rc;
|
|
|
|
/* No domain field in LANMAN case. Domain is
|
|
returned by old servers in the SMB negprot response */
|
|
/* BB For newer servers which do not support Unicode,
|
|
but thus do return domain here we could add parsing
|
|
for it later, but it is not very important */
|
|
cFYI(1, ("ascii: bytes left %d", bleft));
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
|
|
const struct nls_table *nls_cp)
|
|
{
|
|
int rc = 0;
|
|
int wct;
|
|
struct smb_hdr *smb_buf;
|
|
char *bcc_ptr;
|
|
char *str_area;
|
|
SESSION_SETUP_ANDX *pSMB;
|
|
__u32 capabilities;
|
|
int count;
|
|
int resp_buf_type = 0;
|
|
struct kvec iov[2];
|
|
enum securityEnum type;
|
|
__u16 action;
|
|
int bytes_remaining;
|
|
|
|
if (ses == NULL)
|
|
return -EINVAL;
|
|
|
|
type = ses->server->secType;
|
|
|
|
cFYI(1, ("sess setup type %d", type));
|
|
if (type == LANMAN) {
|
|
#ifndef CONFIG_CIFS_WEAK_PW_HASH
|
|
/* LANMAN and plaintext are less secure and off by default.
|
|
So we make this explicitly be turned on in kconfig (in the
|
|
build) and turned on at runtime (changed from the default)
|
|
in proc/fs/cifs or via mount parm. Unfortunately this is
|
|
needed for old Win (e.g. Win95), some obscure NAS and OS/2 */
|
|
return -EOPNOTSUPP;
|
|
#endif
|
|
wct = 10; /* lanman 2 style sessionsetup */
|
|
} else if ((type == NTLM) || (type == NTLMv2)) {
|
|
/* For NTLMv2 failures eventually may need to retry NTLM */
|
|
wct = 13; /* old style NTLM sessionsetup */
|
|
} else /* same size: negotiate or auth, NTLMSSP or extended security */
|
|
wct = 12;
|
|
|
|
rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses,
|
|
(void **)&smb_buf);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB = (SESSION_SETUP_ANDX *)smb_buf;
|
|
|
|
capabilities = cifs_ssetup_hdr(ses, pSMB);
|
|
|
|
/* we will send the SMB in two pieces,
|
|
a fixed length beginning part, and a
|
|
second part which will include the strings
|
|
and rest of bcc area, in order to avoid having
|
|
to do a large buffer 17K allocation */
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = smb_buf->smb_buf_length + 4;
|
|
|
|
/* 2000 big enough to fit max user, domain, NOS name etc. */
|
|
str_area = kmalloc(2000, GFP_KERNEL);
|
|
if (str_area == NULL) {
|
|
cifs_small_buf_release(smb_buf);
|
|
return -ENOMEM;
|
|
}
|
|
bcc_ptr = str_area;
|
|
|
|
ses->flags &= ~CIFS_SES_LANMAN;
|
|
|
|
if (type == LANMAN) {
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
char lnm_session_key[CIFS_SESS_KEY_SIZE];
|
|
|
|
/* no capabilities flags in old lanman negotiation */
|
|
|
|
pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
|
|
/* BB calculate hash with password */
|
|
/* and copy into bcc */
|
|
|
|
calc_lanman_hash(ses, lnm_session_key);
|
|
ses->flags |= CIFS_SES_LANMAN;
|
|
/* #ifdef CONFIG_CIFS_DEBUG2
|
|
cifs_dump_mem("cryptkey: ",ses->server->cryptKey,
|
|
CIFS_SESS_KEY_SIZE);
|
|
#endif */
|
|
memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
|
|
/* can not sign if LANMAN negotiated so no need
|
|
to calculate signing key? but what if server
|
|
changed to do higher than lanman dialect and
|
|
we reconnected would we ever calc signing_key? */
|
|
|
|
cFYI(1, ("Negotiating LANMAN setting up strings"));
|
|
/* Unicode not allowed for LANMAN dialects */
|
|
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
|
|
#endif
|
|
} else if (type == NTLM) {
|
|
char ntlm_session_key[CIFS_SESS_KEY_SIZE];
|
|
|
|
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);
|
|
|
|
/* calculate session key */
|
|
SMBNTencrypt(ses->password, ses->server->cryptKey,
|
|
ntlm_session_key);
|
|
|
|
if (first_time) /* should this be moved into common code
|
|
with similar ntlmv2 path? */
|
|
cifs_calculate_mac_key(&ses->server->mac_signing_key,
|
|
ntlm_session_key, ses->password);
|
|
/* copy session key */
|
|
|
|
memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
|
|
bcc_ptr += CIFS_SESS_KEY_SIZE;
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
/* unicode strings must be word aligned */
|
|
if (iov[0].iov_len % 2) {
|
|
*bcc_ptr = 0;
|
|
bcc_ptr++;
|
|
}
|
|
unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
|
|
} else
|
|
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
|
|
} else if (type == NTLMv2) {
|
|
char *v2_sess_key =
|
|
kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL);
|
|
|
|
/* BB FIXME change all users of v2_sess_key to
|
|
struct ntlmv2_resp */
|
|
|
|
if (v2_sess_key == NULL) {
|
|
cifs_small_buf_release(smb_buf);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
|
|
|
|
/* LM2 password would be here if we supported it */
|
|
pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
|
|
/* cpu_to_le16(LM2_SESS_KEY_SIZE); */
|
|
|
|
pSMB->req_no_secext.CaseSensitivePasswordLength =
|
|
cpu_to_le16(sizeof(struct ntlmv2_resp));
|
|
|
|
/* calculate session key */
|
|
setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp);
|
|
if (first_time) /* should this be moved into common code
|
|
with similar ntlmv2 path? */
|
|
/* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key,
|
|
response BB FIXME, v2_sess_key); */
|
|
|
|
/* copy session key */
|
|
|
|
/* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE);
|
|
bcc_ptr += LM2_SESS_KEY_SIZE; */
|
|
memcpy(bcc_ptr, (char *)v2_sess_key,
|
|
sizeof(struct ntlmv2_resp));
|
|
bcc_ptr += sizeof(struct ntlmv2_resp);
|
|
kfree(v2_sess_key);
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
if (iov[0].iov_len % 2) {
|
|
*bcc_ptr = 0;
|
|
} bcc_ptr++;
|
|
unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
|
|
} else
|
|
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
|
|
} else /* NTLMSSP or SPNEGO */ {
|
|
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
|
|
capabilities |= CAP_EXTENDED_SECURITY;
|
|
pSMB->req.Capabilities = cpu_to_le32(capabilities);
|
|
/* BB set password lengths */
|
|
}
|
|
|
|
count = (long) bcc_ptr - (long) str_area;
|
|
smb_buf->smb_buf_length += count;
|
|
|
|
BCC_LE(smb_buf) = cpu_to_le16(count);
|
|
|
|
iov[1].iov_base = str_area;
|
|
iov[1].iov_len = count;
|
|
rc = SendReceive2(xid, ses, iov, 2 /* num_iovecs */, &resp_buf_type, 0);
|
|
/* SMB request buf freed in SendReceive2 */
|
|
|
|
cFYI(1, ("ssetup rc from sendrecv2 is %d", rc));
|
|
if (rc)
|
|
goto ssetup_exit;
|
|
|
|
pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base;
|
|
smb_buf = (struct smb_hdr *)iov[0].iov_base;
|
|
|
|
if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) {
|
|
rc = -EIO;
|
|
cERROR(1, ("bad word count %d", smb_buf->WordCount));
|
|
goto ssetup_exit;
|
|
}
|
|
action = le16_to_cpu(pSMB->resp.Action);
|
|
if (action & GUEST_LOGIN)
|
|
cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */
|
|
ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */
|
|
cFYI(1, ("UID = %d ", ses->Suid));
|
|
/* response can have either 3 or 4 word count - Samba sends 3 */
|
|
/* and lanman response is 3 */
|
|
bytes_remaining = BCC(smb_buf);
|
|
bcc_ptr = pByteArea(smb_buf);
|
|
|
|
if (smb_buf->WordCount == 4) {
|
|
__u16 blob_len;
|
|
blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength);
|
|
bcc_ptr += blob_len;
|
|
if (blob_len > bytes_remaining) {
|
|
cERROR(1, ("bad security blob length %d", blob_len));
|
|
rc = -EINVAL;
|
|
goto ssetup_exit;
|
|
}
|
|
bytes_remaining -= blob_len;
|
|
}
|
|
|
|
/* BB check if Unicode and decode strings */
|
|
if (smb_buf->Flags2 & SMBFLG2_UNICODE)
|
|
rc = decode_unicode_ssetup(&bcc_ptr, bytes_remaining,
|
|
ses, nls_cp);
|
|
else
|
|
rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining,
|
|
ses, nls_cp);
|
|
|
|
ssetup_exit:
|
|
kfree(str_area);
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER) {
|
|
cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base));
|
|
cifs_small_buf_release(iov[0].iov_base);
|
|
} else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
cifs_buf_release(iov[0].iov_base);
|
|
|
|
return rc;
|
|
}
|