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[zion] Add a syscall to duplicate capabilities

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This commit is contained in:
Drew Galbraith 2023-06-17 00:59:44 -07:00
parent 378ced6b6c
commit cc191cd6bb
4 changed files with 36 additions and 0 deletions
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13
zion/syscall/syscall.cpp
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@ -239,6 +239,16 @@ z_err_t IrqRegister(ZIrqRegisterReq* req, ZIrqRegisterResp* resp) {
return Z_OK;
}
z_err_t CapDuplicate(ZCapDuplicateReq* req, ZCapDuplicateResp* resp) {
auto& proc = gScheduler->CurrentProcess();
auto cap = proc.GetCapability(req->cap);
if (!cap) {
return Z_ERR_CAP_NOT_FOUND;
}
resp->cap = proc.AddExistingCapability(cap);
return Z_OK;
}
extern "C" z_err_t SyscallHandler(uint64_t call_id, void* req, void* resp) {
RefPtr<Thread> thread = gScheduler->CurrentThread();
switch (call_id) {
@ -290,6 +300,9 @@ extern "C" z_err_t SyscallHandler(uint64_t call_id, void* req, void* resp) {
case Z_IRQ_REGISTER:
return IrqRegister(reinterpret_cast<ZIrqRegisterReq*>(req),
reinterpret_cast<ZIrqRegisterResp*>(resp));
case Z_CAP_DUPLICATE:
return CapDuplicate(reinterpret_cast<ZCapDuplicateReq*>(req),
reinterpret_cast<ZCapDuplicateResp*>(resp));
case Z_DEBUG_PRINT:
dbgln("[Debug] %s", req);
return Z_OK;