[CIFS] Support for setting up SMB sessions to legacy lanman servers

1 files changed, 37 insertions, 14 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 006eb33bff5f..7a042041a16a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -88,7 +88,8 @@ enum statusEnum {
 };
 
 enum securityEnum {
-        NTLM = 0,               /* Legacy NTLM012 auth with NTLM hash */
+        LANMAN = 0,             /* Legacy LANMAN auth */
+        NTLM,                   /* Legacy NTLM012 auth with NTLM hash */
         NTLMv2,                 /* Legacy NTLM auth with NTLMv2 hash */
         RawNTLMSSP,             /* NTLMSSP without SPNEGO */
         NTLMSSP,                /* NTLMSSP via SPNEGO */
@@ -179,7 +180,9 @@ struct cifsUidInfo {
 struct cifsSesInfo {
         struct list_head cifsSessionList;
         struct semaphore sesSem;
+#if 0
         struct cifsUidInfo *uidInfo;    /* pointer to user info */
+#endif
         struct TCP_Server_Info *server; /* pointer to server info */
         atomic_t inUse; /* # of mounts (tree connections) on this ses */
         enum statusEnum status;
@@ -194,7 +197,7 @@ struct cifsSesInfo {
         char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for 
                                 TCP names - will ipv6 and sctp addresses fit? */
         char userName[MAX_USERNAME_SIZE + 1];
-        char domainName[MAX_USERNAME_SIZE + 1];
+        char * domainName;
         char * password;
 };
 /* session flags */
@@ -391,9 +394,9 @@ struct mid_q_entry {
         struct smb_hdr *resp_buf;       /* response buffer */
         int midState;   /* wish this were enum but can not pass to wait_event */
         __u8 command;   /* smb command code */
-        unsigned multiPart:1;   /* multiple responses to one SMB request */
         unsigned largeBuf:1;    /* if valid response, is pointer to large buf */
-        unsigned multiResp:1;   /* multiple trans2 responses for one request  */
+        unsigned multiRsp:1;   /* multiple trans2 responses for one request  */
+        unsigned multiEnd:1; /* both received */
 };
 
 struct oplock_q_entry {
@@ -430,15 +433,35 @@ struct dir_notify_req {
 #define   CIFS_LARGE_BUFFER     2
 #define   CIFS_IOVEC            4    /* array of response buffers */
 
-/* Type of session setup needed */
-#define   CIFS_PLAINTEXT        0
-#define   CIFS_LANMAN           1
-#define   CIFS_NTLM             2
-#define   CIFS_NTLMSSP_NEG      3
-#define   CIFS_NTLMSSP_AUTH     4
-#define   CIFS_SPNEGO_INIT      5
-#define   CIFS_SPNEGO_TARG      6
-
+/* Security Flags: indicate type of session setup needed */
+#define   CIFSSEC_MAY_SIGN      0x00001
+#define   CIFSSEC_MAY_NTLM      0x00002
+#define   CIFSSEC_MAY_NTLMV2    0x00004
+#define   CIFSSEC_MAY_KRB5      0x00008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define   CIFSSEC_MAY_LANMAN    0x00010
+#define   CIFSSEC_MAY_PLNTXT    0x00020
+#endif /* weak passwords */
+#define   CIFSSEC_MAY_SEAL      0x00040 /* not supported yet */
+
+#define   CIFSSEC_MUST_SIGN     0x01001
+/* note that only one of the following can be set so the
+result of setting MUST flags more than once will be to
+require use of the stronger protocol */
+#define   CIFSSEC_MUST_NTLM     0x02002
+#define   CIFSSEC_MUST_NTLMV2   0x04004
+#define   CIFSSEC_MUST_KRB5     0x08008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define   CIFSSEC_MUST_LANMAN   0x10010
+#define   CIFSSEC_MUST_PLNTXT   0x20020
+#define   CIFSSEC_MASK          0x37037 /* current flags supported if weak */
+#else     
+#define   CIFSSEC_MASK          0x07007 /* flags supported if no weak config */
+#endif /* WEAK_PW_HASH */
+#define   CIFSSEC_MUST_SEAL     0x40040 /* not supported yet */
+
+#define   CIFSSEC_DEF  CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2
+#define   CIFSSEC_MAX  CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2
 /*
  *****************************************************************
  * All constants go here
@@ -540,8 +563,8 @@ GLOBAL_EXTERN unsigned int experimEnabled;
 GLOBAL_EXTERN unsigned int lookupCacheEnabled;
 GLOBAL_EXTERN unsigned int extended_security;   /* if on, session setup sent 
                                 with more secure ntlmssp2 challenge/resp */
-GLOBAL_EXTERN unsigned int ntlmv2_support;  /* better optional password hash */
 GLOBAL_EXTERN unsigned int sign_CIFS_PDUs;  /* enable smb packet signing */
+GLOBAL_EXTERN unsigned int secFlags;
 GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
 GLOBAL_EXTERN unsigned int CIFSMaxBufSize;  /* max size not including hdr */
 GLOBAL_EXTERN unsigned int cifs_min_rcv;    /* min size of big ntwrk buf pool */