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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "debug.h"
#include "sandbox_impl.h"
namespace playground {
int Sandbox::sandbox_ioctl(int d, int req, void *arg) {
long long tm;
Debug::syscall(&tm, __NR_ioctl, "Executing handler");
struct {
int sysnum;
long long cookie;
IOCtl ioctl_req;
} __attribute__((packed)) request;
request.sysnum = __NR_ioctl;
request.cookie = cookie();
request.ioctl_req.d = d;
request.ioctl_req.req = req;
request.ioctl_req.arg = arg;
long rc;
SysCalls sys;
if (write(sys, processFdPub(), &request, sizeof(request)) !=
sizeof(request) ||
read(sys, threadFdPub(), &rc, sizeof(rc)) != sizeof(rc)) {
die("Failed to forward ioctl() request [sandbox]");
}
Debug::elapsed(tm, __NR_ioctl);
return static_cast<int>(rc);
}
bool Sandbox::process_ioctl(int parentMapsFd, int sandboxFd, int threadFdPub,
int threadFd, SecureMem::Args* mem) {
// Read request
IOCtl ioctl_req;
SysCalls sys;
if (read(sys, sandboxFd, &ioctl_req, sizeof(ioctl_req)) !=sizeof(ioctl_req)){
die("Failed to read parameters for ioctl() [process]");
}
int rc = -EINVAL;
switch (ioctl_req.req) {
case TCGETS:
case TIOCGWINSZ:
SecureMem::sendSystemCall(threadFdPub, false, -1, mem, __NR_ioctl,
ioctl_req.d, ioctl_req.req, ioctl_req.arg);
return true;
default:
std::cerr << "Unsupported ioctl: 0x" << std::hex << ioctl_req.req <<
std::endl;
SecureMem::abandonSystemCall(threadFd, rc);
return false;
}
}
} // namespace
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