On Thu, 07 Oct 2010, Thomas Schwery wrote:
> > Could someone who can reproduce this please do a "strace -f" of the
> > login process to see where it hangs?
>
> You will find attached a trace ('strace -o login_trace -f login') of the
> login process for root (a normal user would fail with a "Operation not
> permitted" error).
>
> I had to interrupt the trace because after 10 minutes, nothing more
> happened ... The last line printed during login by encfs / pam-encfs is :
> (Interface.cpp:165) checking if nameio/block(3:0:1) implements
> nameio/block(3:0:0)
Thomas, thanks for the quick response.
It looks like --no-canonicalize isn't working 100% correctly in
mount(8). Here's a patch to fix it. Coud you please rebuild
util-linux with this patch to verify that it fixes the hang?
Karel, does this patch look OK?
Thanks,
Miklos
---
Subject: don't canonicalize "spec" with --no-canonicalize option
"Spec" was still canonicalized despite --no-canonicalize. This
resulted in a hang during login with pam_encfs (Debian Bug#593336).
Signed-off-by: Miklos Szeredi <[email protected]>
---
mount/devname.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: util-linux-ng/mount/devname.c
===================================================================
--- util-linux-ng.orig/mount/devname.c 2009-02-23 13:33:02.000000000 +0100
+++ util-linux-ng/mount/devname.c 2010-10-07 15:54:48.000000000 +0200
@@ -8,7 +8,7 @@ spec_to_devname(const char *spec)
{
if (!spec)
return NULL;
- if (is_pseudo_fs(spec))
+ if (nocanonicalize || is_pseudo_fs(spec))
return xstrdup(spec);
return fsprobe_get_devname_by_spec(spec);
}
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