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//===-- ProcessLauncherAndroid.cpp ------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/FileSpec.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/HostProcess.h"
#include "lldb/Host/android/ProcessLauncherAndroid.h"
#include "lldb/Target/ProcessLaunchInfo.h"
#include <limits.h>
using namespace lldb;
using namespace lldb_private;
static bool
DupDescriptor(const FileSpec &file_spec, int fd, int flags)
{
int target_fd = ::open(file_spec.GetCString(), flags, 0666);
if (target_fd == -1)
return false;
if (::dup2(target_fd, fd) == -1)
return false;
return (::close(target_fd) == -1) ? false : true;
}
// If there is no PATH variable specified inside the environment then set the path to /system/bin.
// It is required because the default path used by execve() is wrong on android.
static void
FixupEnvironment(Args& env)
{
static const char* path = "PATH=";
static const int path_len = ::strlen(path);
for (const char** args = env.GetConstArgumentVector(); *args; ++args)
if (::strncmp(path, *args, path_len) == 0)
return;
env.AppendArgument("PATH=/system/bin");
}
HostProcess
ProcessLauncherAndroid::LaunchProcess(const ProcessLaunchInfo &launch_info, Error &error)
{
// TODO: Handle other launch parameters specified in launc_info
char exe_path[PATH_MAX];
launch_info.GetExecutableFile().GetPath(exe_path, sizeof(exe_path));
lldb::pid_t pid = ::fork();
if (pid == static_cast<lldb::pid_t>(-1))
{
// Fork failed
error.SetErrorStringWithFormat("Fork failed with error message: %s", strerror(errno));
return HostProcess(LLDB_INVALID_PROCESS_ID);
}
else if (pid == 0)
{
if (const lldb_private::FileAction *file_action = launch_info.GetFileActionForFD(STDIN_FILENO)) {
FileSpec file_spec = file_action->GetFileSpec();
if (file_spec)
if (!DupDescriptor(file_spec, STDIN_FILENO, O_RDONLY))
exit(-1);
}
if (const lldb_private::FileAction *file_action = launch_info.GetFileActionForFD(STDOUT_FILENO)) {
FileSpec file_spec = file_action->GetFileSpec();
if (file_spec)
if (!DupDescriptor(file_spec, STDOUT_FILENO, O_WRONLY | O_CREAT | O_TRUNC))
exit(-1);
}
if (const lldb_private::FileAction *file_action = launch_info.GetFileActionForFD(STDERR_FILENO)) {
FileSpec file_spec = file_action->GetFileSpec();
if (file_spec)
if (!DupDescriptor(file_spec, STDERR_FILENO, O_WRONLY | O_CREAT | O_TRUNC))
exit(-1);
}
// Child process
const char **argv = launch_info.GetArguments().GetConstArgumentVector();
Args env = launch_info.GetEnvironmentEntries();
FixupEnvironment(env);
const char **envp = env.GetConstArgumentVector();
FileSpec working_dir = launch_info.GetWorkingDirectory();
if (working_dir)
{
if (::chdir(working_dir.GetCString()) != 0)
exit(-1);
}
execve(argv[0],
const_cast<char *const *>(argv),
const_cast<char *const *>(envp));
exit(-1);
}
return HostProcess(pid);
}
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