forked from OSchip/llvm-project
99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
//===-- source/Host/linux/Host.cpp ------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// C Includes
|
|
#include <stdio.h>
|
|
#include <sys/utsname.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
|
|
// C++ Includes
|
|
// Other libraries and framework includes
|
|
// Project includes
|
|
#include "lldb/Core/Error.h"
|
|
#include "lldb/Target/Process.h"
|
|
|
|
#include "lldb/Host/Host.h"
|
|
#include "lldb/Core/DataBufferHeap.h"
|
|
#include "lldb/Core/DataExtractor.h"
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
|
|
bool
|
|
Host::GetOSVersion(uint32_t &major,
|
|
uint32_t &minor,
|
|
uint32_t &update)
|
|
{
|
|
struct utsname un;
|
|
int status;
|
|
|
|
if (uname(&un))
|
|
return false;
|
|
|
|
status = sscanf(un.release, "%u.%u.%u", &major, &minor, &update);
|
|
return status == 3;
|
|
}
|
|
|
|
Error
|
|
Host::LaunchProcess (ProcessLaunchInfo &launch_info)
|
|
{
|
|
Error error;
|
|
assert(!"Not implemented yet!!!");
|
|
return error;
|
|
}
|
|
|
|
lldb::DataBufferSP
|
|
Host::GetAuxvData(lldb_private::Process *process)
|
|
{
|
|
static const size_t path_size = 128;
|
|
static char path[path_size];
|
|
lldb::DataBufferSP buf_sp;
|
|
|
|
int fd;
|
|
|
|
// Ideally, we would simply create a FileSpec and call ReadFileContents.
|
|
// However, files in procfs have zero size (since they are, in general,
|
|
// dynamically generated by the kernel) which is incompatible with the
|
|
// current ReadFileContents implementation. Therefore we simply stream the
|
|
// data into a DataBuffer ourselves.
|
|
if (snprintf(path, path_size, "/proc/%" PRIu64 "/auxv", process->GetID()) < 0)
|
|
return buf_sp;
|
|
|
|
if ((fd = open(path, O_RDONLY, 0)) < 0)
|
|
return buf_sp;
|
|
|
|
size_t bytes_read = 0;
|
|
STD_UNIQUE_PTR(DataBufferHeap) buf_ap(new DataBufferHeap(1024, 0));
|
|
for (;;)
|
|
{
|
|
size_t avail = buf_ap->GetByteSize() - bytes_read;
|
|
ssize_t status = read(fd, buf_ap->GetBytes() + bytes_read, avail);
|
|
|
|
if (status < 0)
|
|
break;
|
|
|
|
bytes_read += status;
|
|
|
|
if (status == 0)
|
|
{
|
|
buf_ap->SetByteSize(bytes_read);
|
|
buf_sp.reset(buf_ap.release());
|
|
break;
|
|
}
|
|
|
|
if (avail - status == 0)
|
|
buf_ap->SetByteSize(2 * buf_ap->GetByteSize());
|
|
}
|
|
|
|
return buf_sp;
|
|
}
|