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[kernel] Add syscall helpers

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Added the syscalls/helpers.h file to templatize common kobject syscall
operations. Also moved most syscall implementations to using
process::current() and thread::current() instead of asking the
scheduler.
This commit is contained in:
Justin C. Miller
2020-09-23 00:22:15 -07:00
parent 6780ab1b67
commit d4283731e4
12 changed files with 96 additions and 126 deletions
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70
src/kernel/syscalls/endpoint.cpp
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@@ -3,97 +3,53 @@
#include "log.h"
#include "objects/endpoint.h"
#include "objects/process.h"
#include "scheduler.h"
#include "syscalls/helpers.h"
namespace syscalls {
j6_status_t
endpoint_create(j6_handle_t *handle)
{
scheduler &s = scheduler::get();
TCB *tcb = s.current();
thread *parent = thread::from_tcb(tcb);
process &p = parent->parent();
endpoint *e = new endpoint;
*handle = p.add_handle(e);
construct_handle<endpoint>(handle);
return j6_status_ok;
}
j6_status_t
endpoint_close(j6_handle_t handle)
{
scheduler &s = scheduler::get();
TCB *tcb = s.current();
thread *parent = thread::from_tcb(tcb);
process &p = parent->parent();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::endpoint)
return j6_err_invalid_arg;
p.remove_handle(handle);
endpoint *e = static_cast<endpoint*>(o);
endpoint *e = remove_handle<endpoint>(handle);
if (!e) return j6_err_invalid_arg;
e->close();
return j6_status_ok;
}
j6_status_t
endpoint_send(j6_handle_t handle, size_t len, void *data)
{
scheduler &s = scheduler::get();
TCB *tcb = s.current();
thread *parent = thread::from_tcb(tcb);
process &p = parent->parent();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::endpoint)
return j6_err_invalid_arg;
endpoint *e = static_cast<endpoint*>(o);
j6_status_t status = e->send(len, data);
return status;
endpoint *e = get_handle<endpoint>(handle);
if (!e) return j6_err_invalid_arg;
return e->send(len, data);
}
j6_status_t
endpoint_receive(j6_handle_t handle, size_t *len, void *data)
{
scheduler &s = scheduler::get();
TCB *tcb = s.current();
thread *parent = thread::from_tcb(tcb);
process &p = parent->parent();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::endpoint)
return j6_err_invalid_arg;
endpoint *e = static_cast<endpoint*>(o);
j6_status_t status = e->receive(len, data);
return status;
endpoint *e = get_handle<endpoint>(handle);
if (!e) return j6_err_invalid_arg;
return e->receive(len, data);
}
j6_status_t
endpoint_sendrecv(j6_handle_t handle, size_t *len, void *data)
{
scheduler &s = scheduler::get();
TCB *tcb = s.current();
thread *parent = thread::from_tcb(tcb);
process &p = parent->parent();
endpoint *e = get_handle<endpoint>(handle);
if (!e) return j6_err_invalid_arg;
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::endpoint)
return j6_err_invalid_arg;
endpoint *e = static_cast<endpoint*>(o);
j6_status_t status = e->send(*len, data);
if (status != j6_status_ok)
return status;
status = e->receive(len, data);
return status;
return e->receive(len, data);
}
} // namespace syscalls