Re: [fuse-devel] Invalidate attribute cache from setxattr

[Miklos S. <mi...@sz...>]

> I'm trying to use FUSE to display the contents of a file as a directory. 
>   I can change 'struct stat::st_mode' from the getattr file operation, 
> and it works fine. The problem is that I want to use setxattr to control 
> the way that getattr behaves. If I /usr/bin/stat the file immediately 
> after calling /usr/bin/setfattr, it looks like the old attributes are 
> taken from a cache somewhere. I've tried setting the attr_timeout option 
> to 0, but it makes no difference. How can I invalidate the attribute 
> cache from within my setattr file operation?

Can you try the following patch?  It looks like the attr_timeout == 0
case is buggy.

Thanks,
Miklos

Index: kernel/dir.c
===================================================================
RCS file: /cvsroot/fuse/fuse/kernel/dir.c,v
retrieving revision 1.104
diff -u -r1.104 dir.c
--- kernel/dir.c	12 Apr 2006 10:41:50 -0000	1.104
+++ kernel/dir.c	27 Jun 2006 11:13:57 -0000
@@ -31,8 +31,11 @@
  */
 static unsigned long time_to_jiffies(unsigned long sec, unsigned long nsec)
 {
-	struct timespec ts = {sec, nsec};
-	return jiffies + timespec_to_jiffies(&ts);
+	if (sec || nsec) {
+		struct timespec ts = {sec, nsec};
+		return jiffies + timespec_to_jiffies(&ts);
+	} else
+		return jiffies - 1;
 }
 
 /*