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kern: Implement SvcManageNamedPort

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This commit is contained in:
Michael Scire 2020-03-13 23:12:47 -07:00
parent 6c52cc3e26
commit ca26d8ce27
22 changed files with 1035 additions and 11 deletions
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58
libraries/libmesosphere/source/svc/kern_svc_port.cpp
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@ -21,7 +21,61 @@ namespace ams::kern::svc {
namespace {
Result ManageNamedPort(ams::svc::Handle *out_server_handle, KUserPointer<const char *> user_name, s32 max_sessions) {
/* Copy the provided name from user memory to kernel memory. */
char name[KObjectName::NameLengthMax] = {};
R_TRY(user_name.CopyStringTo(name, sizeof(name)));
/* Validate that sessions and name are valid. */
R_UNLESS(max_sessions >= 0, svc::ResultOutOfRange());
R_UNLESS(name[sizeof(name) - 1] == '\x00', svc::ResultOutOfRange());
if (max_sessions > 0) {
MESOSPHERE_LOG("Creating Named Port %s (max sessions = %d)\n", name, max_sessions);
/* Get the current handle table. */
auto &handle_table = GetCurrentProcess().GetHandleTable();
/* Create a new port. */
KPort *port = KPort::Create();
R_UNLESS(port != nullptr, svc::ResultOutOfResource());
/* Reserve a handle for the server port. */
R_TRY(handle_table.Reserve(out_server_handle));
auto reserve_guard = SCOPE_GUARD { handle_table.Unreserve(*out_server_handle); };
/* Initialize the new port. */
port->Initialize(max_sessions, false, 0);
/* Register the port. */
KPort::Register(port);
/* Register the handle in the table. */
handle_table.Register(*out_server_handle, std::addressof(port->GetServerPort()));
reserve_guard.Cancel();
auto register_guard = SCOPE_GUARD { handle_table.Remove(*out_server_handle); };
/* Create a new object name. */
R_TRY(KObjectName::NewFromName(std::addressof(port->GetClientPort()), name));
/* Perform resource cleanup. */
port->GetServerPort().Close();
port->GetClientPort().Close();
register_guard.Cancel();
} else /* if (max_sessions == 0) */ {
MESOSPHERE_LOG("Deleting Named Port %s\n", name);
/* Ensure that this else case is correct. */
MESOSPHERE_AUDIT(max_sessions == 0);
/* If we're closing, there's no server handle. */
*out_server_handle = ams::svc::InvalidHandle;
/* Delete the object. */
R_TRY(KObjectName::Delete<KClientPort>(name));
}
return ResultSuccess();
}
}
@ -36,7 +90,7 @@ namespace ams::kern::svc {
}
Result ManageNamedPort64(ams::svc::Handle *out_server_handle, KUserPointer<const char *> name, int32_t max_sessions) {
MESOSPHERE_PANIC("Stubbed SvcManageNamedPort64 was called.");
return ManageNamedPort(out_server_handle, name, max_sessions);
}
Result ConnectToPort64(ams::svc::Handle *out_handle, ams::svc::Handle port) {
@ -54,7 +108,7 @@ namespace ams::kern::svc {
}
Result ManageNamedPort64From32(ams::svc::Handle *out_server_handle, KUserPointer<const char *> name, int32_t max_sessions) {
MESOSPHERE_PANIC("Stubbed SvcManageNamedPort64From32 was called.");
return ManageNamedPort(out_server_handle, name, max_sessions);
}
Result ConnectToPort64From32(ams::svc::Handle *out_handle, ams::svc::Handle port) {