[CIFS] Various minor bigendian fixes and sparse level 2 warning message fixes

Most important of these fixes mapchars on bigendian and a few statfs fields

Signed-off-by: Shaggy (shaggy@austin.ibm.com)
Signed-off-by: Steve French (sfrench@us.ibm.com)

8 files changed, 60 insertions, 33 deletions

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 661b45906d09..535177238020 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -4,7 +4,8 @@ Fix readdir caching when unlink removes file in current search buffer,
 and this is followed by a rewind search to just before the deleted entry.
 Do not attempt to set ctime unless atime and/or mtime change requested
 (most servers throw it away anyway). Fix length check of received smbs
-to be more accurate.
+to be more accurate. Fix big endian problem with mapchars mount option,
+and with a field returned by statfs.
 
 Version 1.36
 ------------
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 3fa37790bea2..193f06eb43f9 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -697,7 +697,7 @@ typedef struct smb_com_openx_req {
         __le32 EndOfFile;
         __le32 Timeout;
         __le32 Reserved;
-        __u16  ByteCount;  /* file name follows */
+        __le16  ByteCount;  /* file name follows */
         char   fileName[1];
 } OPENX_REQ;
 
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 0bace385e97a..dc5a6a6ff2f9 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -56,6 +56,7 @@ extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
 extern int is_valid_oplock_break(struct smb_hdr *smb);
 extern int is_size_safe_to_change(struct cifsInodeInfo *);
 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
+extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
 extern int decode_negTokenInit(unsigned char *security_blob, int length,
                         enum securityEnum *secType);
 extern int cifs_inet_pton(int, char * source, void *dst);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index daf717e6b6eb..52caac063a77 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -779,7 +779,7 @@ OldOpenRetry:
         /* BB FIXME END BB */
 
         pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
-        pSMB->OpenFunction = convert_disposition(openDisposition);
+        pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
         count += name_len;
         pSMB->hdr.smb_buf_length += count;
 
@@ -808,10 +808,12 @@ OldOpenRetry:
                         pfile_info->LastAccessTime = 0; /* BB fixme */
                         pfile_info->LastWriteTime = 0; /* BB fixme */
                         pfile_info->ChangeTime = 0;  /* BB fixme */
-                        pfile_info->Attributes = pSMBr->FileAttributes; 
+                        pfile_info->Attributes =
+                                cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); 
                         /* the file_info buf is endian converted by caller */
-                        pfile_info->AllocationSize = pSMBr->EndOfFile;
-                        pfile_info->EndOfFile = pSMBr->EndOfFile;
+                        pfile_info->AllocationSize =
+                                cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
+                        pfile_info->EndOfFile = pfile_info->AllocationSize;
                         pfile_info->NumberOfLinks = cpu_to_le32(1);
                 }
         }
@@ -2390,9 +2392,11 @@ QInfRetry:
                 cFYI(1, ("Send error in QueryInfo = %d", rc));
         } else if (pFinfo) {            /* decode response */
                 memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
-                pFinfo->AllocationSize = (__le64) pSMBr->size;
-                pFinfo->EndOfFile = (__le64) pSMBr->size;
-                pFinfo->Attributes = (__le32) pSMBr->attr;
+                pFinfo->AllocationSize =
+                        cpu_to_le64(le32_to_cpu(pSMBr->size));
+                pFinfo->EndOfFile = pFinfo->AllocationSize;
+                pFinfo->Attributes =
+                        cpu_to_le32(le16_to_cpu(pSMBr->attr));
         } else
                 rc = -EIO; /* bad buffer passed in */
 
@@ -3722,16 +3726,16 @@ QFSPosixRetry:
                                         le64_to_cpu(response_data->TotalBlocks);
                         FSData->f_bfree =
                             le64_to_cpu(response_data->BlocksAvail);
-                        if(response_data->UserBlocksAvail == -1) {
+                        if(response_data->UserBlocksAvail == cpu_to_le64(-1)) {
                                 FSData->f_bavail = FSData->f_bfree;
                         } else {
                                 FSData->f_bavail =
                                         le64_to_cpu(response_data->UserBlocksAvail);
                         }
-                        if(response_data->TotalFileNodes != -1)
+                        if(response_data->TotalFileNodes != cpu_to_le64(-1))
                                 FSData->f_files =
                                         le64_to_cpu(response_data->TotalFileNodes);
-                        if(response_data->FreeFileNodes != -1)
+                        if(response_data->FreeFileNodes != cpu_to_le64(-1))
                                 FSData->f_ffree =
                                         le64_to_cpu(response_data->FreeFileNodes);
                 }
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 196976049c00..e27e5ad8b591 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -303,12 +303,12 @@ static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB)
         byte_count += total_in_buf2;
         BCC_LE(pTargetSMB) = cpu_to_le16(byte_count);
 
-        byte_count = be32_to_cpu(pTargetSMB->smb_buf_length);
+        byte_count = pTargetSMB->smb_buf_length;
         byte_count += total_in_buf2;
 
         /* BB also add check that we are not beyond maximum buffer size */
                 
-        pTargetSMB->smb_buf_length = cpu_to_be32(byte_count);
+        pTargetSMB->smb_buf_length = byte_count;
 
         if(remaining == total_in_buf2) {
                 cFYI(1,("found the last secondary response"));
@@ -333,7 +333,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
         struct cifsSesInfo *ses;
         struct task_struct *task_to_wake = NULL;
         struct mid_q_entry *mid_entry;
-        char *temp;
+        char temp;
         int isLargeBuf = FALSE;
         int isMultiRsp;
         int reconnect;
@@ -435,22 +435,32 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
                         continue;
                 }
 
-                /* the right amount was read from socket - 4 bytes */
+                /* The right amount was read from socket - 4 bytes */
+                /* so we can now interpret the length field */
 
+                /* the first byte big endian of the length field,
+                is actually not part of the length but the type
+                with the most common, zero, as regular data */
+                temp = *((char *) smb_buffer);
+
+                /* Note that FC 1001 length is big endian on the wire, 
+                but we convert it here so it is always manipulated
+                as host byte order */
                 pdu_length = ntohl(smb_buffer->smb_buf_length);
-                cFYI(1,("rfc1002 length(big endian)0x%x)", pdu_length+4));
+                smb_buffer->smb_buf_length = pdu_length;
+
+                cFYI(1,("rfc1002 length 0x%x)", pdu_length+4));
 
-                temp = (char *) smb_buffer;
-                if (temp[0] == (char) RFC1002_SESSION_KEEP_ALIVE) {
+                if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) {
                         continue; 
-                } else if (temp[0] == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
+                } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
                         cFYI(1,("Good RFC 1002 session rsp"));
                         continue;
-                } else if (temp[0] == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) {
+                } 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)",
-                                temp[4]));
+                                pdu_length));
                         if(server->tcpStatus == CifsNew) {
                                 /* if nack on negprot (rather than 
                                 ret of smb negprot error) reconnecting
@@ -472,9 +482,10 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
                                 wake_up(&server->response_q);
                                 continue;
                         }
-                } else if (temp[0] != (char) 0) {
+                } else if (temp != (char) 0) {
                         cERROR(1,("Unknown RFC 1002 frame"));
-                        cifs_dump_mem(" Received Data: ", temp, length);
+                        cifs_dump_mem(" Received Data: ", (char *)smb_buffer,
+                                      length);
                         cifs_reconnect(server);
                         csocket = server->ssocket;
                         continue;
@@ -609,7 +620,8 @@ multi_t2_fnd:
                 } else if ((is_valid_oplock_break(smb_buffer) == FALSE)
                     && (isMultiRsp == FALSE)) {                          
                         cERROR(1, ("No task to wake, unknown frame rcvd!"));
-                        cifs_dump_mem("Received Data is: ",temp,sizeof(struct smb_hdr));
+                        cifs_dump_mem("Received Data is: ",(char *)smb_buffer,
+                                      sizeof(struct smb_hdr));
                 }
         } /* end while !EXITING */
 
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 26b35b55f31b..8a0edd695f84 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -419,7 +419,7 @@ checkSMBhdr(struct smb_hdr *smb, __u16 mid)
 int
 checkSMB(struct smb_hdr *smb, __u16 mid, int length)
 {
-        __u32 len = be32_to_cpu(smb->smb_buf_length);
+        __u32 len = smb->smb_buf_length;
         cFYI(0,
              ("Entering checkSMB with Length: %x, smb_buf_length: %x ",
               length, len));
@@ -448,9 +448,9 @@ checkSMB(struct smb_hdr *smb, __u16 mid, int length)
         if (checkSMBhdr(smb, mid))
                 return 1;
 
-        if ((4 + len != smbCalcSize(smb))
+        if ((4 + len != smbCalcSize_LE(smb))
             || (4 + len != (unsigned int)length)) {
-                cERROR(1, ("smbCalcSize %x ", smbCalcSize(smb)));
+                cERROR(1, ("smbCalcSize %x ", smbCalcSize_LE(smb)));
                 cERROR(1,
                        ("bad smb size detected. The Mid=%d", smb->Mid));
                 return 1;
@@ -672,6 +672,7 @@ cifsConvertToUCS(__le16 * target, const char *source, int maxlen,
         int i,j,charlen;
         int len_remaining = maxlen;
         char src_char;
+        __u16 temp;
 
         if(!mapChars) 
                 return cifs_strtoUCS((wchar_t *) target, source, PATH_MAX, cp);
@@ -708,13 +709,14 @@ cifsConvertToUCS(__le16 * target, const char *source, int maxlen,
                                 break;*/
                         default:
                                 charlen = cp->char2uni(source+i,
-                                        len_remaining, target+j);
+                                        len_remaining, &temp);
                                 /* if no match, use question mark, which
                                 at least in some cases servers as wild card */
                                 if(charlen < 1) {
                                         target[j] = cpu_to_le16(0x003f);
                                         charlen = 1;
-                                }
+                                } else
+                                        target[j] = cpu_to_le16(temp);
                                 len_remaining -= charlen;
                                 /* character may take more than one byte in the
                                    the source string, but will take exactly two
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 32efa32774d2..29e6efc5597c 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -868,7 +868,14 @@ unsigned int
 smbCalcSize(struct smb_hdr *ptr)
 {
         return (sizeof (struct smb_hdr) + (2 * ptr->WordCount) +
-                2 /* size of the bcc field itself */ + BCC(ptr));
+                2 /* size of the bcc field */ + BCC(ptr));
+}
+
+unsigned int
+smbCalcSize_LE(struct smb_hdr *ptr)
+{
+        return (sizeof (struct smb_hdr) + (2 * ptr->WordCount) +
+                2 /* size of the bcc field */ + le16_to_cpu(BCC_LE(ptr)));
 }
 
 /* The following are taken from fs/ntfs/util.c */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index d5e0c4018f92..9e8e85a8d186 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -414,7 +414,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
         spin_lock(&GlobalMid_Lock);
         if (midQ->resp_buf) {
                 spin_unlock(&GlobalMid_Lock);
-                receive_len = be32_to_cpu(*(__be32 *)midQ->resp_buf);
+                receive_len = midQ->resp_buf->smb_buf_length;
         } else {
                 cERROR(1,("No response buffer"));
                 if(midQ->midState == MID_REQUEST_SUBMITTED) {
@@ -665,7 +665,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
         spin_lock(&GlobalMid_Lock);
         if (midQ->resp_buf) {
                 spin_unlock(&GlobalMid_Lock);
-                receive_len = be32_to_cpu(*(__be32 *)midQ->resp_buf);
+                receive_len = midQ->resp_buf->smb_buf_length;
         } else {
                 cERROR(1,("No response buffer"));
                 if(midQ->midState == MID_REQUEST_SUBMITTED) {