ls_rec throws EBADF at close(fd)

[cahirwpz]

When I move line 14:

unix.close(fd)

... after the loop and run /bin/ls_rec I get following message:

[ dir, ino=2] /.
[ dir, ino=2] /..
[file, ino=3] /mimiker.ld
[ dir, ino=4] /lib
[ dir, ino=4] /lib/.
[ dir, ino=2] /lib/..
[ dir, ino=5] /lib/lua
[ dir, ino=5] /lib/lua/.
[ dir, ino=4] /lib/lua/..
[file, ino=6] /lib/lua/init.lua
/bin/lua: 9
stack traceback:
	[C]: in function 'unix.close'
	/bin/ls_rec:23: in function 'list_recursive'
	/bin/ls_rec:20: in function 'list_recursive'
	/bin/ls_rec:26: in main chunk
	[C]: in ?
Child exited with 256

[cahirwpz]

Hmm... that was my mistake after all. Apparently variable bindings in Lua do not work as I'd expect them to. It was necessary to add local keyword to fd variable.