Messages in this thread | | | Date | Tue, 15 May 2007 08:00:10 +0200 | From | "Jan Blunck" <> | Subject | Re: [RFC][PATCH 3/14] Add the whiteout file type |
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On 5/14/07, Jan Engelhardt <jengelh@linux01.gwdg.de> wrote: > > On May 14 2007 15:09, Bharata B Rao wrote: > > > >A white-out stops the VFS from further lookups of the white-outs name and > >returns -ENOENT. This is the same behaviour as if the filename isn't > >found. This can be used in combination with union mounts to virtually > >delete (white-out) files by creating a file with this file type. > > > >Signed-off-by: Jan Blunck <j.blunck@tu-harburg.de> > >Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> > >--- > > include/linux/stat.h | 2 ++ > > 1 files changed, 2 insertions(+) > > > >--- a/include/linux/stat.h > >+++ b/include/linux/stat.h > >@@ -10,6 +10,7 @@ > > #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) > > > > #define S_IFMT 00170000 > >+#define S_IFWHT 0160000 /* whiteout */ > > #define S_IFSOCK 0140000 > > #define S_IFLNK 0120000 > > #define S_IFREG 0100000 > > I wonder why 110000, 130000 or 150000 could not also be used? >
I used the S_IFWHT definition like it is referenced in stat(2). I guess it would be a good idea to use the same flag on BSD and Linux.
As you can see in stat(2) other OS use 011, 013 and 015. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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