Signed-off-by: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
---
Documentation/binfmt_misc.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/binfmt_misc.txt b/Documentation/binfmt_misc.txt
index 6b1de70..a22eb69 100644
--- a/Documentation/binfmt_misc.txt
+++ b/Documentation/binfmt_misc.txt
@@ -66,6 +66,13 @@ Here is what the fields mean:
This feature should be used with care as the interpreter
will run with root permissions when a setuid binary owned by root
is run with binfmt_misc.
+ 'F' - fix binary. The usual behaviour of binfmt_misc is to spawn the
+ binary lazily when the misc format file is invoked. However,
+ this doesn't work very well in the face of mount namespaces and
+ changeroots, so the F mode opens the binary as soon as the
+ emultation is installed and uses the opened image to spawn the
+ emulator, meaning it is always available once installed,
+ regardless of how the environment changes.
There are some restrictions:
--
2.6.2
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