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-rw-r--r--fs/cifs/connect.c110
1 files changed, 67 insertions, 43 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index bae1479318d..faaf9eb15b9 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -49,8 +49,6 @@
static DECLARE_COMPLETION(cifsd_complete);
-extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
- unsigned char *p24);
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
unsigned char *p24);
@@ -369,21 +367,21 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
continue;
if (bigbuf == NULL) {
bigbuf = cifs_buf_get();
- if(bigbuf == NULL) {
- cERROR(1,("No memory for large SMB response"));
+ if (!bigbuf) {
+ cERROR(1, ("No memory for large SMB response"));
msleep(3000);
/* retry will check if exiting */
continue;
}
- } else if(isLargeBuf) {
- /* we are reusing a dirtry large buf, clear its start */
+ } else if (isLargeBuf) {
+ /* we are reusing a dirty large buf, clear its start */
memset(bigbuf, 0, sizeof (struct smb_hdr));
}
if (smallbuf == NULL) {
smallbuf = cifs_small_buf_get();
- if(smallbuf == NULL) {
- cERROR(1,("No memory for SMB response"));
+ if (!smallbuf) {
+ cERROR(1, ("No memory for SMB response"));
msleep(1000);
/* retry will check if exiting */
continue;
@@ -403,12 +401,12 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
kernel_recvmsg(csocket, &smb_msg,
&iov, 1, 4, 0 /* BB see socket.h flags */);
- if(server->tcpStatus == CifsExiting) {
+ 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)) {
@@ -417,15 +415,15 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
tcpStatus CifsNeedReconnect if server hung */
continue;
} else if (length <= 0) {
- if(server->tcpStatus == CifsNew) {
- cFYI(1,("tcp session abend after SMBnegprot"));
+ if (server->tcpStatus == CifsNew) {
+ 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,
and so simply return error to mount */
break;
}
- if(length == -EINTR) {
+ if (!try_to_freeze() && (length == -EINTR)) {
cFYI(1,("cifsd thread killed"));
break;
}
@@ -585,9 +583,11 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
/* merge response - fix up 1st*/
if(coalesce_t2(smb_buffer,
mid_entry->resp_buf)) {
+ mid_entry->multiRsp = 1;
break;
} else {
/* all parts received */
+ mid_entry->multiEnd = 1;
goto multi_t2_fnd;
}
} else {
@@ -632,9 +632,14 @@ multi_t2_fnd:
wake_up_process(task_to_wake);
} else if ((is_valid_oplock_break(smb_buffer, server) == FALSE)
&& (isMultiRsp == FALSE)) {
- cERROR(1, ("No task to wake, unknown frame rcvd!"));
+ cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter));
cifs_dump_mem("Received Data is: ",(char *)smb_buffer,
sizeof(struct smb_hdr));
+#ifdef CONFIG_CIFS_DEBUG2
+ cifs_dump_detail(smb_buffer);
+ cifs_dump_mids(server);
+#endif /* CIFS_DEBUG2 */
+
}
} /* end while !EXITING */
@@ -976,7 +981,7 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
}
/* BB are there cases in which a comma can be valid in
a domain name and need special handling? */
- if (strnlen(value, 65) < 65) {
+ if (strnlen(value, 256) < 256) {
vol->domainname = value;
cFYI(1, ("Domain name set"));
} else {
@@ -1762,9 +1767,14 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
if (volume_info.username)
strncpy(pSesInfo->userName,
volume_info.username,MAX_USERNAME_SIZE);
- if (volume_info.domainname)
- strncpy(pSesInfo->domainName,
- volume_info.domainname,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;
down(&pSesInfo->sesSem);
rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls);
@@ -1980,7 +1990,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
static int
CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
- char session_key[CIFS_SESSION_KEY_SIZE],
+ char session_key[CIFS_SESS_KEY_SIZE],
const struct nls_table *nls_codepage)
{
struct smb_hdr *smb_buffer;
@@ -2038,15 +2048,15 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
pSMB->req_no_secext.CaseInsensitivePasswordLength =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ cpu_to_le16(CIFS_SESS_KEY_SIZE);
pSMB->req_no_secext.CaseSensitivePasswordLength =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ cpu_to_le16(CIFS_SESS_KEY_SIZE);
bcc_ptr = pByteArea(smb_buffer);
- memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
- memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
+ 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 */
@@ -2054,7 +2064,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
}
if(user == NULL)
- bytes_returned = 0; /* skill null user */
+ bytes_returned = 0; /* skip null user */
else
bytes_returned =
cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
@@ -2635,8 +2645,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
/* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128;
if(sign_CIFS_PDUs)
negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN;
- if(ntlmv2_support)
- negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
+/* if(ntlmv2_support)
+ negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/
/* setup pointers to domain name and workstation name */
bcc_ptr += SecurityBlobLength;
@@ -2994,14 +3004,14 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
SecurityBlob->LmChallengeResponse.Buffer = 0;
SecurityBlob->NtChallengeResponse.Length =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ cpu_to_le16(CIFS_SESS_KEY_SIZE);
SecurityBlob->NtChallengeResponse.MaximumLength =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
- memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE);
+ 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_SESSION_KEY_SIZE;
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
+ SecurityBlobLength += CIFS_SESS_KEY_SIZE;
+ bcc_ptr += CIFS_SESS_KEY_SIZE;
if (ses->capabilities & CAP_UNICODE) {
if (domain == NULL) {
@@ -3340,22 +3350,33 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr = &pSMB->Password[0];
if((ses->server->secMode) & SECMODE_USER) {
pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
+ *bcc_ptr = 0; /* password is null byte */
bcc_ptr++; /* skip password */
+ /* already aligned so no need to do it below */
} else {
- pSMB->PasswordLength = cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
/* BB FIXME add code to fail this if NTLMv2 or Kerberos
specified as required (when that support is added to
the vfs in the future) as only NTLM or the much
- weaker LANMAN (which we do not send) is accepted
+ weaker LANMAN (which we do not send by default) is accepted
by Samba (not sure whether other servers allow
NTLMv2 password here) */
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+ if((extended_security & CIFSSEC_MAY_LANMAN) &&
+ (ses->server->secType == LANMAN))
+ calc_lanman_hash(ses, bcc_ptr);
+ else
+#endif /* CIFS_WEAK_PW_HASH */
SMBNTencrypt(ses->password,
ses->server->cryptKey,
bcc_ptr);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
- *bcc_ptr = 0;
- bcc_ptr++; /* align */
+ bcc_ptr += CIFS_SESS_KEY_SIZE;
+ if(ses->capabilities & CAP_UNICODE) {
+ /* must align unicode strings */
+ *bcc_ptr = 0; /* null byte password */
+ bcc_ptr++;
+ }
}
if(ses->server->secMode &
@@ -3429,7 +3450,10 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
}
/* else do not bother copying these informational fields */
}
- tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
+ if(smb_buffer_response->WordCount == 3)
+ tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
+ else
+ tcon->Flags = 0;
cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags));
} else if ((rc == 0) && tcon == NULL) {
/* all we need to save for IPC$ connection */
@@ -3494,7 +3518,7 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
struct nls_table * nls_info)
{
int rc = 0;
- char ntlm_session_key[CIFS_SESSION_KEY_SIZE];
+ char ntlm_session_key[CIFS_SESS_KEY_SIZE];
int ntlmv2_flag = FALSE;
int first_time = 0;
@@ -3528,8 +3552,8 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
pSesInfo->server->timeZone));
#ifdef CONFIG_CIFS_EXPERIMENTAL
if(experimEnabled > 1)
- rc = CIFS_SessSetup(xid, pSesInfo, CIFS_NTLM /* type */,
- &ntlmv2_flag, nls_info);
+ rc = CIFS_SessSetup(xid, pSesInfo,
+ first_time, nls_info);
else
#endif
if (extended_security
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-10 03:23:07 +0000