(fhandler_base::lseek): Include high order bits in return.

[J. Johnston]

Patch checked in.  I also added an empty declaration of struct stat64 which 
caused the initial warning message in the first place.

-- Jeff J.

Corinna Vinschen wrote:
> Ping?
> 
> Corinna
> 
> On Mon, Nov 24, 2003 at 04:15:13PM +0100, Corinna Vinschen wrote:
> 
>>On Sat, Nov 22, 2003 at 08:28:13PM -0500, Christopher Faylor wrote:
>>
>>>The patch below causes compile warnings to be issued for cygwin when
>>>stat.h is included:
>>>
>>>In file included from /netrel/generic/cygwin/newlib/libc/include/sys/fcntl.h:164,
>>>                 from /netrel/generic/cygwin/winsup/cygwin/include/fcntl.h:14,
>>>                 from /netrel/generic/cygwin/winsup/testsuite/winsup.api/crlf.c:144:
>>>/netrel/generic/cygwin/newlib/libc/include/sys/stat.h:144: warning: `struct stat64' declared inside parameter list
>>>/netrel/generic/cygwin/newlib/libc/include/sys/stat.h:144: warning: its scope is only this definition or declaration, which is probably not what you want
>>>
>>>It could presumably cause errors for unistd.h/_lseek64 as well.
>>>
>>>I noticed this problem while trying to run the cygwin test suite.
>>
>>These declarations should really only exist when building newlib.
>>They are not for building applications.  I'd propose the below patch:
>>
>>Corinna
>>
>>	* libc/include/fcntl.h: Declare syscalls only when building newlib.
>>	* libc/include/stat.h: Ditto.
>>	* libc/include/unistd.h: Ditto.
>>
>>Index: libc/include/sys/fcntl.h
>>===================================================================
>>RCS file: /cvs/src/src/newlib/libc/include/sys/fcntl.h,v
>>retrieving revision 1.3
>>diff -u -p -r1.3 fcntl.h
>>--- libc/include/sys/fcntl.h	18 Nov 2003 19:17:17 -0000	1.3
>>+++ libc/include/sys/fcntl.h	24 Nov 2003 14:59:03 -0000
>>@@ -169,10 +169,12 @@ extern int fcntl _PARAMS ((int, int, ...
>> 
>> /* Provide _<systemcall> prototypes for functions provided by some versions
>>    of newlib.  */
>>+#ifdef _COMPILING_NEWLIB
>> extern int _open _PARAMS ((const char *, int, ...));
>> extern int _fcntl _PARAMS ((int, int, ...));
>> #ifdef __LARGE64_FILES
>> extern int _open64 _PARAMS ((const char *, int, ...));
>>+#endif
>> #endif
>> 
>> #ifdef __cplusplus
>>Index: libc/include/sys/stat.h
>>===================================================================
>>RCS file: /cvs/src/src/newlib/libc/include/sys/stat.h,v
>>retrieving revision 1.14
>>diff -u -p -r1.14 stat.h
>>--- libc/include/sys/stat.h	18 Nov 2003 19:17:17 -0000	1.14
>>+++ libc/include/sys/stat.h	24 Nov 2003 14:59:04 -0000
>>@@ -137,7 +137,7 @@ int	_EXFUN(mknod,( const char *__path, m
>> 
>> /* Provide prototypes for most of the _<systemcall> names that are
>>    provided in newlib for some compilers.  */
>>-#ifndef __INSIDE_CYGWIN__
>>+#ifdef _COMPILING_NEWLIB
>> int	_EXFUN(_fstat,( int __fd, struct stat *__sbuf ));
>> int	_EXFUN(_stat,( const char *__path, struct stat *__sbuf ));
>> #ifdef __LARGE64_FILES
>>Index: libc/include/sys/unistd.h
>>===================================================================
>>RCS file: /cvs/src/src/newlib/libc/include/sys/unistd.h,v
>>retrieving revision 1.46
>>diff -u -p -r1.46 unistd.h
>>--- libc/include/sys/unistd.h	18 Nov 2003 19:17:17 -0000	1.46
>>+++ libc/include/sys/unistd.h	24 Nov 2003 14:59:04 -0000
>>@@ -165,6 +165,7 @@ extern char *suboptarg;			/* getsubopt(3
>> int	 getsubopt(char **, char * const *, char **);
>> #endif /* _POSIX_SOURCE */
>> 
>>+#ifdef _COMPILING_NEWLIB
>> /* Provide prototypes for most of the _<systemcall> names that are
>>    provided in newlib for some compilers.  */
>> int     _EXFUN(_close, (int __fildes ));
>>@@ -180,6 +181,7 @@ void *  _EXFUN(_sbrk,  (ptrdiff_t __incr
>> int     _EXFUN(_unlink, (const char *__path ));
>> _READ_WRITE_RETURN_TYPE _EXFUN(_write, (int __fd, const void *__buf, size_t __nbyte ));
>> int     _EXFUN(_execve, (const char *__path, char * const __argv[], char * const __envp[] ));
>>+#endif
>> 
>> #if defined(__CYGWIN__) || defined(__rtems__) || defined(__sh__)
>> #if !defined(__INSIDE_CYGWIN__)
>>
>>-- 
>>Corinna Vinschen
>>Cygwin Developer
>>Red Hat, Inc.
> 
>