Re: feature request: O_DIRECTIO could be used on Tru64

[Jim Meyering]

"Lemley James - jlemle" <address@hidden> wrote:
> Hi coreutils fans, while attempting to use direct I/O with dd on Tru64
> 5.1B, I discovered that Tru64 doesn't define O_DIRECT as coreutils 5.93
> is expecting, but does define O_DIRECTIO which seems to act as I expect
> direct I/O to act.
>
> The open(2) man page states:  O_DIRECTIO [Tru64 UNIX]
>       Enables direct I/O on a file.
>
> Making this change to src/system.h allows the flag "direct" to be used
> with dd on Tru64, and also appears to affect how the coreutil "shred"
> opens a file.

Thanks for the patch.
I've applied one that's equivalent:

2006-02-07  Jim Meyering  <address@hidden>

        * src/system.h (!defined O_DIRECT): If O_DIRECTIO is defined (as it
        is on Tru64), define O_DIRECT to that.  Patch From James Lemley.

Index: src/system.h
===================================================================
RCS file: /fetish/cu/src/system.h,v
retrieving revision 1.141
retrieving revision 1.142
diff -u -p -u -r1.141 -r1.142
--- src/system.h        11 Jan 2006 08:22:34 -0000      1.141
+++ src/system.h        7 Feb 2006 22:32:50 -0000       1.142
@@ -156,6 +156,11 @@ initialize_exit_failure (int status)
 # define R_OK 4
 #endif
 
+#if !defined O_DIRECT && defined O_DIRECTIO
+/* Tru64 spells it `O_DIRECTIO'.  */
+# define O_DIRECT O_DIRECTIO
+#endif
+
 #if !defined O_DIRECT
 # define O_DIRECT 0
 #endif