Ok so with this bugfix 64 bit file access actually seems to work :-).

Problems were just dumb bugs like (defining sys_lseek to return 'int' DOH !).

Jeremy.
(This used to be commit 54dd51176fbab18af0b21bdee71b53f8f86573a8)

3 files changed, 27 insertions, 9 deletions

diff --git a/source3/smbd/fileio.c b/source3/smbd/fileio.c
index f0bb5e45ac..d40c159798 100644
--- a/source3/smbd/fileio.c
+++ b/source3/smbd/fileio.c
@@ -36,6 +36,10 @@ SMB_OFF_T seek_file(files_struct *fsp,SMB_OFF_T pos)
     offset = 3;
 
   fsp->pos = (sys_lseek(fsp->fd_ptr->fd,pos+offset,SEEK_SET) - offset);
+
+  DEBUG(10,("seek_file: requested pos = %.0f, new pos = %.0f\n",
+        (double)(pos+offset), (double)fsp->pos ));
+
   return(fsp->pos);
 }
 
@@ -62,7 +66,7 @@ ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
     SMB_OFF_T num = (fsp->mmap_size > pos) ? (fsp->mmap_size - pos) : -1;
     num = MIN(n,num);
 #ifdef LARGE_SMB_OFF_T
-    if ((num > 0) && (num < (1<<(sizeof(size_t)*8))) {
+    if ((num > 0) && (num < (1LL<<(sizeof(size_t)*8)))) {
 #else /* LARGE_SMB_OFF_T */
     if (num > 0) {
 #endif /* LARGE_SMB_OFF_T */
@@ -76,7 +80,7 @@ ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
 #endif
 
   if (seek_file(fsp,pos) != pos) {
-    DEBUG(3,("Failed to seek to %.0f\n",(double)pos));
+    DEBUG(3,("read_file: Failed to seek to %.0f\n",(double)pos));
     return(ret);
   }
   
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index 81b3ff26d5..5052e6d52a 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -661,9 +661,16 @@ int reply_ntcreate_and_X(connection_struct *conn,
 	put_long_date(p,sbuf.st_mtime); /* change time */
 	p += 8;
 	SIVAL(p,0,fmode); /* File Attributes. */
-	p += 12;
+    p += 4;
+#ifdef LARGE_SMB_OFF_T
+    SIVAL(p,0, file_len);
+    SIVAL(p,4, file_len >> 32);
+#else /* LARGE_SMB_OFF_T */
+    SIVAL(p,0,file_len);
+#endif /* LARGE_SMB_OFF_T */
+	p += 8;
 #ifdef LARGE_SMB_OFF_T
-	SIVAL(p,0, file_len & 0xFFFFFFFF);
+	SIVAL(p,0, file_len);
 	SIVAL(p,4, file_len >> 32);
 #else /* LARGE_SMB_OFF_T */
 	SIVAL(p,0,file_len);
@@ -889,9 +896,16 @@ static int call_nt_transact_create(connection_struct *conn,
     put_long_date(p,sbuf.st_mtime); /* change time */
     p += 8;
     SIVAL(p,0,fmode); /* File Attributes. */
-    p += 12;
+    p += 4;
+#ifdef LARGE_SMB_OFF_T
+    SIVAL(p,0, file_len);
+    SIVAL(p,4, (file_len >> 32));
+#else /* LARGE_SMB_OFF_T */
+    SIVAL(p,0,file_len);
+#endif /* LARGE_SMB_OFF_T */
+    p += 8;
 #ifdef LARGE_SMB_OFF_T
-    SIVAL(p,0, file_len & 0xFFFFFFFF);
+    SIVAL(p,0, file_len);
     SIVAL(p,4, (file_len >> 32));
 #else /* LARGE_SMB_OFF_T */
     SIVAL(p,0,file_len);
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index e956ab6cd9..38c39efad6 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -1792,7 +1792,7 @@ int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_s
 
   startpos = IVAL(inbuf,smb_vwv1);
 #ifdef LARGE_SMB_OFF_T
-  if(SVAL(inbuf,smb_wct) == 10) {
+  if(CVAL(inbuf,smb_wct) == 10) {
     /*
      * This is a large offset (64 bit) read.
      */
@@ -2007,7 +2007,7 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
   data = smb_buf(outbuf);
 
 #ifdef LARGE_SMB_OFF_T
-  if(SVAL(inbuf,smb_wct) == 12) {
+  if(CVAL(inbuf,smb_wct) == 12) {
     /*
      * This is a large offset (64 bit) read.
      */
@@ -2265,7 +2265,7 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
   data = smb_base(inbuf) + smb_doff;
 
 #ifdef LLARGE_SMB_OFF_T
-  if(SVAL(inbuf,smb_wct) == 14) {
+  if(CVAL(inbuf,smb_wct) == 14) {
     /*
      * This is a large offset (64 bit) write.
      */