1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
#include "debug.h"
#include "sandbox_impl.h"
namespace playground {
int Sandbox::sandbox_ioctl(int d, int req, void *arg) {
Debug::syscall(__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]");
}
return static_cast<int>(rc);
}
bool Sandbox::process_ioctl(int parentProc, 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
|
