Linux: use read-only access to enumerate devices and descriptors

Write access is not needed until later.
Also fix handling of open() error code.

1 files changed, 1 insertions, 0 deletions

diff --git a/TODO b/TODO
index 955e501..4598e4f 100644
--- a/TODO
+++ b/TODO
@@ -7,6 +7,7 @@ doxygen warnings
 serialization of handle_events
 0.1 compat layer
 internal docs for OS porters
+passing of "access denied" error code from op_open
 
 1.0 API style/naming points to reconsider
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