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[zion] Move channel syscalls to new format.

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This commit is contained in:
Drew Galbraith 2023-06-20 14:41:44 -07:00
parent 1a70ce4855
commit 77bb3acfb4
11 changed files with 91 additions and 123 deletions
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52
zion/syscall/channel.cpp Normal file
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#include "syscall/channel.h"
#include "scheduler/scheduler.h"
#include "syscall/syscall.h"
z_err_t ChannelCreate(ZChannelCreateReq* req) {
auto& proc = gScheduler->CurrentProcess();
auto chan_pair = Channel::CreateChannelPair();
*req->channel1 = proc.AddNewCapability(chan_pair.first(), ZC_WRITE | ZC_READ);
*req->channel2 =
proc.AddNewCapability(chan_pair.second(), ZC_WRITE | ZC_READ);
return Z_OK;
}
z_err_t ChannelSend(ZChannelSendReq* req) {
auto& proc = gScheduler->CurrentProcess();
auto chan_cap = proc.GetCapability(req->chan_cap);
RET_ERR(ValidateCap(chan_cap, ZC_WRITE));
auto chan = chan_cap->obj<Channel>();
RET_IF_NULL(chan);
// FIXME: Get rid of this hack.
ZMessage message{
.num_bytes = req->num_bytes,
.data = const_cast<void*>(req->data),
.num_caps = req->num_caps,
.caps = req->caps,
};
return chan->Write(message);
}
z_err_t ChannelRecv(ZChannelRecvReq* req) {
auto& proc = gScheduler->CurrentProcess();
auto chan_cap = proc.GetCapability(req->chan_cap);
RET_ERR(ValidateCap(chan_cap, ZC_READ));
auto chan = chan_cap->obj<Channel>();
RET_IF_NULL(chan);
// FIXME: Get rid of this hack.
ZMessage message{
.num_bytes = *req->num_bytes,
.data = const_cast<void*>(req->data),
.num_caps = *req->num_caps,
.caps = req->caps,
};
RET_ERR(chan->Read(message));
*req->num_bytes = message.num_bytes;
*req->num_caps = message.num_caps;
return Z_OK;
}