f1246f84e0
This change finally adds capabilities to handles. Included changes: - j6_handle_t is now again 64 bits, with the highest 8 bits being a type code, and the next highest 24 bits being the capability mask, so that programs can check type/caps without calling the kernel. - The definitions grammar now includes a `capabilities [ ]` section on objects, to list what capabilities are relevant. - j6/caps.h is auto-generated from object capability lists - init_libj6 again sets __handle_self and __handle_sys, this is a bit of a hack. - A new syscall, j6_handle_list, will return the list of existing handles owned by the calling process. - syscall_verify.cpp.cog now actually checks that the needed capabilities exist on handles before allowing the call.
38 lines
983 B
Modula-2
38 lines
983 B
Modula-2
# Channels are objects that enable synchronous IPC of
|
|
# arbitrary-sized messages.
|
|
|
|
object endpoint : kobject {
|
|
uid c5882f24a4c03b7e
|
|
|
|
capabilities [
|
|
send
|
|
receive
|
|
]
|
|
|
|
method create [constructor]
|
|
|
|
# Send a message on a channel. Blocks until the message
|
|
# is received.
|
|
method send [cap:send] {
|
|
param tag uint64
|
|
param data buffer
|
|
}
|
|
|
|
# Receieve a message on a channel. Blocks until a message
|
|
# is available.
|
|
method receive [cap:receive] {
|
|
param tag uint64 [out]
|
|
param data buffer [out optional]
|
|
param timeout uint64 # Receive timeout in nanoseconds
|
|
}
|
|
|
|
# Send a message on a channel and then await a new message.
|
|
# Equivalent to calling send and then recieve, as a single
|
|
# operation.
|
|
method sendrecv [cap:send cap:receive] {
|
|
param tag uint64 [inout]
|
|
param data buffer [inout]
|
|
param timeout uint64 # Receive timeout in nanoseconds
|
|
}
|
|
}
|