On 5/14/07, Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxx> >Signed-off-by: Bharata B Rao <bharata@xxxxxxxxxxxxxxxxxx> >--- > 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-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
