SYNOPSIS
        int valid_trace(string what, int|string arg)

DESCRIPTION
        Check if the interactive user is allowed to use tracing.

        The argument <what> denotes the action for which permission is to be
        checked, <arg> is the argument given to the traceing efun:

        "trace"               Is the user allowed to use tracing?
                       <arg> is the tracelevel argument given.
        "traceprefix"  Is the user allowed to set a traceprefix?
                       <arg> is the prefix given.

SEE ALSO
        trace(E), showsmallnewmalloced(D), malloc(D), status(D), memory(C)