[CIFS] Fix allocation of buffers for new session setup routine to allow

longer user and domain names and allow passing sec options on mount

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 13 insertions, 5 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 38f83db20764..de405bfb67d2 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -396,6 +396,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
         int i;
         struct TCP_Server_Info * server;
         u16 count;
+        unsigned int secFlags;
 
         if(ses->server)
                 server = ses->server;
@@ -407,9 +408,16 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
                       (void **) &pSMB, (void **) &pSMBr);
         if (rc)
                 return rc;
+
+        /* if any of auth flags (ie not sign or seal) are overriden use them */
+        if(ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL)))
+                secFlags = ses->overrideSecFlg;
+        else /* if override flags set only sign/seal OR them with global auth */
+                secFlags = extended_security | ses->overrideSecFlg;
+
         pSMB->hdr.Mid = GetNextMid(server);
         pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
-        if((extended_security & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
+        if((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
                 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
         
         count = 0;
@@ -439,8 +447,8 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
                         && (pSMBr->DialectIndex == LANMAN_PROT)) {
                 struct lanman_neg_rsp * rsp = (struct lanman_neg_rsp *)pSMBr;
 
-                if((extended_security & CIFSSEC_MAY_LANMAN) || 
-                        (extended_security & CIFSSEC_MAY_PLNTXT))
+                if((secFlags & CIFSSEC_MAY_LANMAN) || 
+                        (secFlags & CIFSSEC_MAY_PLNTXT))
                         server->secType = LANMAN;
                 else {
                         cERROR(1, ("mount failed weak security disabled"
@@ -498,12 +506,12 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 
         if((server->secMode & SECMODE_PW_ENCRYPT) == 0)
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-                if ((extended_security & CIFSSEC_MAY_PLNTXT) == 0)
+                if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0)
 #endif /* CIFS_WEAK_PW_HASH */
                         cERROR(1,("Server requests plain text password"
                                   " but client support disabled"));
 
-        if(extended_security & CIFSSEC_MUST_NTLMV2)
+        if(secFlags & CIFSSEC_MUST_NTLMV2)
                 server->secType = NTLMv2;
         else
                 server->secType = NTLM;