Hi goinsane,
I'd like to get values from the struct sockaddr_in which is passed to accept .
At the time of entry this struct has still no values. How could I access the
struct at return? The usage of arg0 seems useless, as this is a new
filedesriptor. Does the copyin at entry make sense at all?
The copyin at the entry probe does not make sense. Since the address of
the sockaddr_in structure will not be available
in argN builtin variables, you must store the addresses you are
interested in in a thread local variable. On the return probe
you can use copyin builtin method to get the contents of the sockaddr
structure.
The modified script would look like the following,
fbt:sockfs:accept:entry
{
self->sockaddr_ref = arg1;
self->sockaddr_len = arg2;
}
fbt:sockfs:accept:return
{
self->sockaddr_content = (struct sockaddr_in*)
copyin(self->sockaddr_ref, self->sockaddr_len);
/* whatever your script intends to with the sockaddr structure */
}
cheers,
Krishnan
fbt:sockfs:accept:entry
{
newsock = (struct sockaddr_in*)copyin(arg1, arg2); */
}
fbt:sockfs:accept:return
{
/* ??? */
}
thank you,
goinsane
Message was edited by: goinsane
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