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|
// Take a look at the license at the top of the repository in the LICENSE file.
use crate::sys::system::is_proc_running;
use crate::windows::Sid;
use crate::{
DiskUsage, Gid, Pid, PidExt, ProcessExt, ProcessRefreshKind, ProcessStatus, Signal, Uid,
};
use std::ffi::OsString;
use std::fmt;
use std::mem::{size_of, zeroed, MaybeUninit};
use std::ops::Deref;
use std::os::windows::ffi::OsStringExt;
use std::os::windows::process::CommandExt;
use std::path::{Path, PathBuf};
use std::process;
use std::ptr::null_mut;
use std::str;
use std::sync::Arc;
use libc::{c_void, memcpy};
use ntapi::ntpebteb::PEB;
use ntapi::ntwow64::{PEB32, PRTL_USER_PROCESS_PARAMETERS32, RTL_USER_PROCESS_PARAMETERS32};
use once_cell::sync::Lazy;
use ntapi::ntpsapi::{
NtQueryInformationProcess, ProcessBasicInformation, ProcessCommandLineInformation,
ProcessWow64Information, PROCESSINFOCLASS, PROCESS_BASIC_INFORMATION,
};
use ntapi::ntrtl::{RtlGetVersion, PRTL_USER_PROCESS_PARAMETERS, RTL_USER_PROCESS_PARAMETERS};
use winapi::shared::basetsd::SIZE_T;
use winapi::shared::minwindef::{DWORD, FALSE, FILETIME, LPVOID, MAX_PATH, TRUE, ULONG};
use winapi::shared::ntdef::{NT_SUCCESS, UNICODE_STRING};
use winapi::shared::ntstatus::{
STATUS_BUFFER_OVERFLOW, STATUS_BUFFER_TOO_SMALL, STATUS_INFO_LENGTH_MISMATCH,
};
use winapi::shared::winerror::ERROR_INSUFFICIENT_BUFFER;
use winapi::um::errhandlingapi::GetLastError;
use winapi::um::handleapi::CloseHandle;
use winapi::um::heapapi::{GetProcessHeap, HeapAlloc, HeapFree};
use winapi::um::memoryapi::{ReadProcessMemory, VirtualQueryEx};
use winapi::um::processthreadsapi::{
GetProcessTimes, GetSystemTimes, OpenProcess, OpenProcessToken, ProcessIdToSessionId,
};
use winapi::um::psapi::{
EnumProcessModulesEx, GetModuleBaseNameW, GetModuleFileNameExW, GetProcessMemoryInfo,
LIST_MODULES_ALL, PROCESS_MEMORY_COUNTERS, PROCESS_MEMORY_COUNTERS_EX,
};
use winapi::um::securitybaseapi::GetTokenInformation;
use winapi::um::winbase::{GetProcessIoCounters, CREATE_NO_WINDOW};
use winapi::um::winnt::{
TokenUser, HANDLE, HEAP_ZERO_MEMORY, IO_COUNTERS, MEMORY_BASIC_INFORMATION,
PROCESS_QUERY_INFORMATION, PROCESS_QUERY_LIMITED_INFORMATION, PROCESS_VM_READ,
RTL_OSVERSIONINFOEXW, TOKEN_QUERY, TOKEN_USER, ULARGE_INTEGER,
};
impl fmt::Display for ProcessStatus {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(match *self {
ProcessStatus::Run => "Runnable",
_ => "Unknown",
})
}
}
fn get_process_handler(pid: Pid) -> Option<HandleWrapper> {
if pid.0 == 0 {
return None;
}
let options = PROCESS_QUERY_INFORMATION | PROCESS_VM_READ;
HandleWrapper::new(unsafe { OpenProcess(options, FALSE, pid.0 as DWORD) })
.or_else(|| {
sysinfo_debug!("OpenProcess failed, error: {:?}", unsafe { GetLastError() });
HandleWrapper::new(unsafe {
OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, pid.0 as DWORD)
})
})
.or_else(|| {
sysinfo_debug!("OpenProcess limited failed, error: {:?}", unsafe {
GetLastError()
});
None
})
}
unsafe fn get_process_user_id(
handle: &HandleWrapper,
refresh_kind: ProcessRefreshKind,
) -> Option<Uid> {
struct HeapWrap<T>(*mut T);
impl<T> HeapWrap<T> {
unsafe fn new(size: DWORD) -> Option<Self> {
let ptr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size as _) as *mut T;
if ptr.is_null() {
sysinfo_debug!("HeapAlloc failed");
None
} else {
Some(Self(ptr))
}
}
}
impl<T> Drop for HeapWrap<T> {
fn drop(&mut self) {
if !self.0.is_null() {
unsafe {
HeapFree(GetProcessHeap(), 0, self.0 as *mut _);
}
}
}
}
if !refresh_kind.user() {
return None;
}
let mut token = null_mut();
if OpenProcessToken(**handle, TOKEN_QUERY, &mut token) == 0 {
sysinfo_debug!("OpenProcessToken failed");
return None;
}
let token = HandleWrapper::new(token)?;
let mut size = 0;
if GetTokenInformation(*token, TokenUser, null_mut(), 0, &mut size) == 0 {
let err = GetLastError();
if err != ERROR_INSUFFICIENT_BUFFER {
sysinfo_debug!("GetTokenInformation failed, error: {:?}", err);
return None;
}
}
let ptu: HeapWrap<TOKEN_USER> = HeapWrap::new(size)?;
if GetTokenInformation(*token, TokenUser, ptu.0 as *mut _, size, &mut size) == 0 {
sysinfo_debug!("GetTokenInformation failed, error: {:?}", GetLastError());
return None;
}
Sid::from_psid((*ptu.0).User.Sid).map(Uid)
}
struct HandleWrapper(HANDLE);
impl HandleWrapper {
fn new(handle: HANDLE) -> Option<Self> {
if handle.is_null() {
None
} else {
Some(Self(handle))
}
}
}
impl Deref for HandleWrapper {
type Target = HANDLE;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl Drop for HandleWrapper {
fn drop(&mut self) {
unsafe {
CloseHandle(self.0);
}
}
}
#[allow(clippy::non_send_fields_in_send_ty)]
unsafe impl Send for HandleWrapper {}
unsafe impl Sync for HandleWrapper {}
#[doc = include_str!("../../md_doc/process.md")]
pub struct Process {
name: String,
cmd: Vec<String>,
exe: PathBuf,
pid: Pid,
user_id: Option<Uid>,
environ: Vec<String>,
cwd: PathBuf,
root: PathBuf,
pub(crate) memory: u64,
pub(crate) virtual_memory: u64,
parent: Option<Pid>,
status: ProcessStatus,
handle: Option<Arc<HandleWrapper>>,
cpu_calc_values: CPUsageCalculationValues,
start_time: u64,
pub(crate) run_time: u64,
cpu_usage: f32,
pub(crate) updated: bool,
old_read_bytes: u64,
old_written_bytes: u64,
read_bytes: u64,
written_bytes: u64,
}
struct CPUsageCalculationValues {
old_process_sys_cpu: u64,
old_process_user_cpu: u64,
old_system_sys_cpu: u64,
old_system_user_cpu: u64,
}
impl CPUsageCalculationValues {
fn new() -> Self {
CPUsageCalculationValues {
old_process_sys_cpu: 0,
old_process_user_cpu: 0,
old_system_sys_cpu: 0,
old_system_user_cpu: 0,
}
}
}
static WINDOWS_8_1_OR_NEWER: Lazy<bool> = Lazy::new(|| unsafe {
let mut version_info: RTL_OSVERSIONINFOEXW = MaybeUninit::zeroed().assume_init();
version_info.dwOSVersionInfoSize = std::mem::size_of::<RTL_OSVERSIONINFOEXW>() as u32;
if !NT_SUCCESS(RtlGetVersion(
&mut version_info as *mut RTL_OSVERSIONINFOEXW as *mut _,
)) {
return true;
}
// Windows 8.1 is 6.3
version_info.dwMajorVersion > 6
|| version_info.dwMajorVersion == 6 && version_info.dwMinorVersion >= 3
});
unsafe fn get_process_name(process_handler: &HandleWrapper, h_mod: *mut c_void) -> String {
let mut process_name = [0u16; MAX_PATH + 1];
GetModuleBaseNameW(
**process_handler,
h_mod as _,
process_name.as_mut_ptr(),
MAX_PATH as DWORD + 1,
);
null_terminated_wchar_to_string(&process_name)
}
unsafe fn get_h_mod(process_handler: &HandleWrapper, h_mod: &mut *mut c_void) -> bool {
let mut cb_needed = 0;
EnumProcessModulesEx(
**process_handler,
h_mod as *mut *mut c_void as _,
size_of::<DWORD>() as DWORD,
&mut cb_needed,
LIST_MODULES_ALL,
) != 0
}
unsafe fn get_exe(process_handler: &HandleWrapper) -> PathBuf {
let mut exe_buf = [0u16; MAX_PATH + 1];
GetModuleFileNameExW(
**process_handler,
std::ptr::null_mut(),
exe_buf.as_mut_ptr(),
MAX_PATH as DWORD + 1,
);
PathBuf::from(null_terminated_wchar_to_string(&exe_buf))
}
impl Process {
pub(crate) fn new_from_pid(
pid: Pid,
now: u64,
refresh_kind: ProcessRefreshKind,
) -> Option<Process> {
unsafe {
let process_handler = get_process_handler(pid)?;
let mut info: MaybeUninit<PROCESS_BASIC_INFORMATION> = MaybeUninit::uninit();
if NtQueryInformationProcess(
*process_handler,
ProcessBasicInformation,
info.as_mut_ptr() as *mut _,
size_of::<PROCESS_BASIC_INFORMATION>() as _,
null_mut(),
) != 0
{
return None;
}
let info = info.assume_init();
let mut h_mod = null_mut();
let name = if get_h_mod(&process_handler, &mut h_mod) {
get_process_name(&process_handler, h_mod)
} else {
String::new()
};
let exe = get_exe(&process_handler);
let mut root = exe.clone();
root.pop();
let (cmd, environ, cwd) = match get_process_params(&process_handler) {
Ok(args) => args,
Err(_e) => {
sysinfo_debug!("Failed to get process parameters: {}", _e);
(Vec::new(), Vec::new(), PathBuf::new())
}
};
let (start_time, run_time) = get_start_and_run_time(*process_handler, now);
let parent = if info.InheritedFromUniqueProcessId as usize != 0 {
Some(Pid(info.InheritedFromUniqueProcessId as _))
} else {
None
};
let user_id = get_process_user_id(&process_handler, refresh_kind);
Some(Process {
handle: Some(Arc::new(process_handler)),
name,
pid,
parent,
user_id,
cmd,
environ,
exe,
cwd,
root,
status: ProcessStatus::Run,
memory: 0,
virtual_memory: 0,
cpu_usage: 0.,
cpu_calc_values: CPUsageCalculationValues::new(),
start_time,
run_time,
updated: true,
old_read_bytes: 0,
old_written_bytes: 0,
read_bytes: 0,
written_bytes: 0,
})
}
}
pub(crate) fn new_full(
pid: Pid,
parent: Option<Pid>,
memory: u64,
virtual_memory: u64,
name: String,
now: u64,
refresh_kind: ProcessRefreshKind,
) -> Process {
if let Some(handle) = get_process_handler(pid) {
unsafe {
let exe = get_exe(&handle);
let mut root = exe.clone();
root.pop();
let (cmd, environ, cwd) = match get_process_params(&handle) {
Ok(args) => args,
Err(_e) => {
sysinfo_debug!("Failed to get process parameters: {}", _e);
(Vec::new(), Vec::new(), PathBuf::new())
}
};
let (start_time, run_time) = get_start_and_run_time(*handle, now);
let user_id = get_process_user_id(&handle, refresh_kind);
Process {
handle: Some(Arc::new(handle)),
name,
pid,
user_id,
parent,
cmd,
environ,
exe,
cwd,
root,
status: ProcessStatus::Run,
memory,
virtual_memory,
cpu_usage: 0.,
cpu_calc_values: CPUsageCalculationValues::new(),
start_time,
run_time,
updated: true,
old_read_bytes: 0,
old_written_bytes: 0,
read_bytes: 0,
written_bytes: 0,
}
}
} else {
Process {
handle: None,
name,
pid,
user_id: None,
parent,
cmd: Vec::new(),
environ: Vec::new(),
exe: get_executable_path(pid),
cwd: PathBuf::new(),
root: PathBuf::new(),
status: ProcessStatus::Run,
memory,
virtual_memory,
cpu_usage: 0.,
cpu_calc_values: CPUsageCalculationValues::new(),
start_time: 0,
run_time: 0,
updated: true,
old_read_bytes: 0,
old_written_bytes: 0,
read_bytes: 0,
written_bytes: 0,
}
}
}
pub(crate) fn update(
&mut self,
refresh_kind: crate::ProcessRefreshKind,
nb_cpus: u64,
now: u64,
) {
if refresh_kind.cpu() {
compute_cpu_usage(self, nb_cpus);
}
if refresh_kind.disk_usage() {
update_disk_usage(self);
}
self.run_time = now.saturating_sub(self.start_time());
self.updated = true;
}
pub(crate) fn get_handle(&self) -> Option<HANDLE> {
self.handle.as_ref().map(|h| ***h)
}
pub(crate) fn get_start_time(&self) -> Option<u64> {
self.handle.as_ref().map(|handle| get_start_time(***handle))
}
}
impl ProcessExt for Process {
fn kill_with(&self, signal: Signal) -> Option<bool> {
super::system::convert_signal(signal)?;
let mut kill = process::Command::new("taskkill.exe");
kill.arg("/PID").arg(self.pid.to_string()).arg("/F");
kill.creation_flags(CREATE_NO_WINDOW);
match kill.output() {
Ok(o) => Some(o.status.success()),
Err(_) => Some(false),
}
}
fn name(&self) -> &str {
&self.name
}
fn cmd(&self) -> &[String] {
&self.cmd
}
fn exe(&self) -> &Path {
self.exe.as_path()
}
fn pid(&self) -> Pid {
self.pid
}
fn environ(&self) -> &[String] {
&self.environ
}
fn cwd(&self) -> &Path {
self.cwd.as_path()
}
fn root(&self) -> &Path {
self.root.as_path()
}
fn memory(&self) -> u64 {
self.memory
}
fn virtual_memory(&self) -> u64 {
self.virtual_memory
}
fn parent(&self) -> Option<Pid> {
self.parent
}
fn status(&self) -> ProcessStatus {
self.status
}
fn start_time(&self) -> u64 {
self.start_time
}
fn run_time(&self) -> u64 {
self.run_time
}
fn cpu_usage(&self) -> f32 {
self.cpu_usage
}
fn disk_usage(&self) -> DiskUsage {
DiskUsage {
written_bytes: self.written_bytes - self.old_written_bytes,
total_written_bytes: self.written_bytes,
read_bytes: self.read_bytes - self.old_read_bytes,
total_read_bytes: self.read_bytes,
}
}
fn user_id(&self) -> Option<&Uid> {
self.user_id.as_ref()
}
fn effective_user_id(&self) -> Option<&Uid> {
None
}
fn group_id(&self) -> Option<Gid> {
None
}
fn effective_group_id(&self) -> Option<Gid> {
None
}
fn wait(&self) {
if let Some(handle) = self.get_handle() {
while is_proc_running(handle) {
if get_start_time(handle) != self.start_time() {
// PID owner changed so the previous process was finished!
return;
}
std::thread::sleep(std::time::Duration::from_millis(10));
}
} else {
// In this case, we can't do anything so we just return.
sysinfo_debug!("can't wait on this process so returning");
}
}
fn session_id(&self) -> Option<Pid> {
unsafe {
let mut out = 0;
if ProcessIdToSessionId(self.pid.as_u32(), &mut out) != 0 {
return Some(Pid(out as _));
}
sysinfo_debug!("ProcessIdToSessionId failed, error: {:?}", GetLastError());
None
}
}
}
#[inline]
unsafe fn get_process_times(handle: HANDLE) -> u64 {
let mut fstart: FILETIME = zeroed();
let mut x = zeroed();
GetProcessTimes(
handle,
&mut fstart as *mut FILETIME,
&mut x as *mut FILETIME,
&mut x as *mut FILETIME,
&mut x as *mut FILETIME,
);
super::utils::filetime_to_u64(fstart)
}
#[inline]
fn compute_start(process_times: u64) -> u64 {
// 11_644_473_600 is the number of seconds between the Windows epoch (1601-01-01) and
// the Linux epoch (1970-01-01).
process_times / 10_000_000 - 11_644_473_600
}
fn get_start_and_run_time(handle: HANDLE, now: u64) -> (u64, u64) {
unsafe {
let process_times = get_process_times(handle);
let start = compute_start(process_times);
let run_time = check_sub(now, start);
(start, run_time)
}
}
#[inline]
pub(crate) fn get_start_time(handle: HANDLE) -> u64 {
unsafe {
let process_times = get_process_times(handle);
compute_start(process_times)
}
}
unsafe fn ph_query_process_variable_size(
process_handle: &HandleWrapper,
process_information_class: PROCESSINFOCLASS,
) -> Option<Vec<u16>> {
let mut return_length = MaybeUninit::<ULONG>::uninit();
let mut status = NtQueryInformationProcess(
**process_handle,
process_information_class,
null_mut(),
0,
return_length.as_mut_ptr() as *mut _,
);
if status != STATUS_BUFFER_OVERFLOW
&& status != STATUS_BUFFER_TOO_SMALL
&& status != STATUS_INFO_LENGTH_MISMATCH
{
return None;
}
let mut return_length = return_length.assume_init();
let buf_len = (return_length as usize) / 2;
let mut buffer: Vec<u16> = Vec::with_capacity(buf_len + 1);
status = NtQueryInformationProcess(
**process_handle,
process_information_class,
buffer.as_mut_ptr() as *mut _,
return_length,
&mut return_length as *mut _,
);
if !NT_SUCCESS(status) {
return None;
}
buffer.set_len(buf_len);
buffer.push(0);
Some(buffer)
}
unsafe fn get_cmdline_from_buffer(buffer: *const u16) -> Vec<String> {
// Get argc and argv from the command line
let mut argc = MaybeUninit::<i32>::uninit();
let argv_p = winapi::um::shellapi::CommandLineToArgvW(buffer, argc.as_mut_ptr());
if argv_p.is_null() {
return Vec::new();
}
let argc = argc.assume_init();
let argv = std::slice::from_raw_parts(argv_p, argc as usize);
let mut res = Vec::new();
for arg in argv {
let len = libc::wcslen(*arg);
let str_slice = std::slice::from_raw_parts(*arg, len);
res.push(String::from_utf16_lossy(str_slice));
}
winapi::um::winbase::LocalFree(argv_p as *mut _);
res
}
unsafe fn get_region_size(handle: &HandleWrapper, ptr: LPVOID) -> Result<usize, &'static str> {
let mut meminfo = MaybeUninit::<MEMORY_BASIC_INFORMATION>::uninit();
if VirtualQueryEx(
**handle,
ptr,
meminfo.as_mut_ptr() as *mut _,
size_of::<MEMORY_BASIC_INFORMATION>(),
) == 0
{
return Err("Unable to read process memory information");
}
let meminfo = meminfo.assume_init();
Ok((meminfo.RegionSize as isize - ptr.offset_from(meminfo.BaseAddress)) as usize)
}
unsafe fn get_process_data(
handle: &HandleWrapper,
ptr: LPVOID,
size: usize,
) -> Result<Vec<u16>, &'static str> {
let mut buffer: Vec<u16> = Vec::with_capacity(size / 2 + 1);
let mut bytes_read = 0;
if ReadProcessMemory(
**handle,
ptr as *mut _,
buffer.as_mut_ptr() as *mut _,
size,
&mut bytes_read,
) == FALSE
{
return Err("Unable to read process data");
}
// Documentation states that the function fails if not all data is accessible.
if bytes_read != size {
return Err("ReadProcessMemory returned unexpected number of bytes read");
}
buffer.set_len(size / 2);
buffer.push(0);
Ok(buffer)
}
trait RtlUserProcessParameters {
fn get_cmdline(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str>;
fn get_cwd(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str>;
fn get_environ(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str>;
}
macro_rules! impl_RtlUserProcessParameters {
($t:ty) => {
impl RtlUserProcessParameters for $t {
fn get_cmdline(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str> {
let ptr = self.CommandLine.Buffer;
let size = self.CommandLine.Length;
unsafe { get_process_data(handle, ptr as _, size as _) }
}
fn get_cwd(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str> {
let ptr = self.CurrentDirectory.DosPath.Buffer;
let size = self.CurrentDirectory.DosPath.Length;
unsafe { get_process_data(handle, ptr as _, size as _) }
}
fn get_environ(&self, handle: &HandleWrapper) -> Result<Vec<u16>, &'static str> {
let ptr = self.Environment;
unsafe {
let size = get_region_size(handle, ptr as LPVOID)?;
get_process_data(handle, ptr as _, size as _)
}
}
}
};
}
impl_RtlUserProcessParameters!(RTL_USER_PROCESS_PARAMETERS32);
impl_RtlUserProcessParameters!(RTL_USER_PROCESS_PARAMETERS);
unsafe fn get_process_params(
handle: &HandleWrapper,
) -> Result<(Vec<String>, Vec<String>, PathBuf), &'static str> {
if !cfg!(target_pointer_width = "64") {
return Err("Non 64 bit targets are not supported");
}
// First check if target process is running in wow64 compatibility emulator
let mut pwow32info = MaybeUninit::<LPVOID>::uninit();
let result = NtQueryInformationProcess(
**handle,
ProcessWow64Information,
pwow32info.as_mut_ptr() as *mut _,
size_of::<LPVOID>() as u32,
null_mut(),
);
if !NT_SUCCESS(result) {
return Err("Unable to check WOW64 information about the process");
}
let pwow32info = pwow32info.assume_init();
if pwow32info.is_null() {
// target is a 64 bit process
let mut pbasicinfo = MaybeUninit::<PROCESS_BASIC_INFORMATION>::uninit();
let result = NtQueryInformationProcess(
**handle,
ProcessBasicInformation,
pbasicinfo.as_mut_ptr() as *mut _,
size_of::<PROCESS_BASIC_INFORMATION>() as u32,
null_mut(),
);
if !NT_SUCCESS(result) {
return Err("Unable to get basic process information");
}
let pinfo = pbasicinfo.assume_init();
let mut peb = MaybeUninit::<PEB>::uninit();
if ReadProcessMemory(
**handle,
pinfo.PebBaseAddress as *mut _,
peb.as_mut_ptr() as *mut _,
size_of::<PEB>() as SIZE_T,
null_mut(),
) != TRUE
{
return Err("Unable to read process PEB");
}
let peb = peb.assume_init();
let mut proc_params = MaybeUninit::<RTL_USER_PROCESS_PARAMETERS>::uninit();
if ReadProcessMemory(
**handle,
peb.ProcessParameters as *mut PRTL_USER_PROCESS_PARAMETERS as *mut _,
proc_params.as_mut_ptr() as *mut _,
size_of::<RTL_USER_PROCESS_PARAMETERS>() as SIZE_T,
null_mut(),
) != TRUE
{
return Err("Unable to read process parameters");
}
let proc_params = proc_params.assume_init();
return Ok((
get_cmd_line(&proc_params, handle),
get_proc_env(&proc_params, handle),
get_cwd(&proc_params, handle),
));
}
// target is a 32 bit process in wow64 mode
let mut peb32 = MaybeUninit::<PEB32>::uninit();
if ReadProcessMemory(
**handle,
pwow32info,
peb32.as_mut_ptr() as *mut _,
size_of::<PEB32>() as SIZE_T,
null_mut(),
) != TRUE
{
return Err("Unable to read PEB32");
}
let peb32 = peb32.assume_init();
let mut proc_params = MaybeUninit::<RTL_USER_PROCESS_PARAMETERS32>::uninit();
if ReadProcessMemory(
**handle,
peb32.ProcessParameters as *mut PRTL_USER_PROCESS_PARAMETERS32 as *mut _,
proc_params.as_mut_ptr() as *mut _,
size_of::<RTL_USER_PROCESS_PARAMETERS32>() as SIZE_T,
null_mut(),
) != TRUE
{
return Err("Unable to read 32 bit process parameters");
}
let proc_params = proc_params.assume_init();
Ok((
get_cmd_line(&proc_params, handle),
get_proc_env(&proc_params, handle),
get_cwd(&proc_params, handle),
))
}
fn get_cwd<T: RtlUserProcessParameters>(params: &T, handle: &HandleWrapper) -> PathBuf {
match params.get_cwd(handle) {
Ok(buffer) => unsafe { PathBuf::from(null_terminated_wchar_to_string(buffer.as_slice())) },
Err(_e) => {
sysinfo_debug!("get_cwd failed to get data: {}", _e);
PathBuf::new()
}
}
}
unsafe fn null_terminated_wchar_to_string(slice: &[u16]) -> String {
match slice.iter().position(|&x| x == 0) {
Some(pos) => OsString::from_wide(&slice[..pos])
.to_string_lossy()
.into_owned(),
None => OsString::from_wide(slice).to_string_lossy().into_owned(),
}
}
fn get_cmd_line_old<T: RtlUserProcessParameters>(
params: &T,
handle: &HandleWrapper,
) -> Vec<String> {
match params.get_cmdline(handle) {
Ok(buffer) => unsafe { get_cmdline_from_buffer(buffer.as_ptr()) },
Err(_e) => {
sysinfo_debug!("get_cmd_line_old failed to get data: {}", _e);
Vec::new()
}
}
}
#[allow(clippy::cast_ptr_alignment)]
fn get_cmd_line_new(handle: &HandleWrapper) -> Vec<String> {
unsafe {
if let Some(buffer) = ph_query_process_variable_size(handle, ProcessCommandLineInformation)
{
let buffer = (*(buffer.as_ptr() as *const UNICODE_STRING)).Buffer;
get_cmdline_from_buffer(buffer)
} else {
vec![]
}
}
}
fn get_cmd_line<T: RtlUserProcessParameters>(params: &T, handle: &HandleWrapper) -> Vec<String> {
if *WINDOWS_8_1_OR_NEWER {
get_cmd_line_new(handle)
} else {
get_cmd_line_old(params, handle)
}
}
fn get_proc_env<T: RtlUserProcessParameters>(params: &T, handle: &HandleWrapper) -> Vec<String> {
match params.get_environ(handle) {
Ok(buffer) => {
let equals = "=".encode_utf16().next().unwrap();
let raw_env = buffer;
let mut result = Vec::new();
let mut begin = 0;
while let Some(offset) = raw_env[begin..].iter().position(|&c| c == 0) {
let end = begin + offset;
if raw_env[begin..end].iter().any(|&c| c == equals) {
result.push(
OsString::from_wide(&raw_env[begin..end])
.to_string_lossy()
.into_owned(),
);
begin = end + 1;
} else {
break;
}
}
result
}
Err(_e) => {
sysinfo_debug!("get_proc_env failed to get data: {}", _e);
Vec::new()
}
}
}
pub(crate) fn get_executable_path(_pid: Pid) -> PathBuf {
/*let where_req = format!("ProcessId={}", pid);
if let Some(ret) = run_wmi(&["process", "where", &where_req, "get", "ExecutablePath"]) {
for line in ret.lines() {
if line.is_empty() || line == "ExecutablePath" {
continue
}
return line.to_owned();
}
}*/
PathBuf::new()
}
#[inline]
fn check_sub(a: u64, b: u64) -> u64 {
if a < b {
a
} else {
a - b
}
}
/// Before changing this function, you must consider the following:
/// <https://github.com/GuillaumeGomez/sysinfo/issues/459>
pub(crate) fn compute_cpu_usage(p: &mut Process, nb_cpus: u64) {
unsafe {
let mut ftime: FILETIME = zeroed();
let mut fsys: FILETIME = zeroed();
let mut fuser: FILETIME = zeroed();
let mut fglobal_idle_time: FILETIME = zeroed();
let mut fglobal_kernel_time: FILETIME = zeroed(); // notice that it includes idle time
let mut fglobal_user_time: FILETIME = zeroed();
if let Some(handle) = p.get_handle() {
GetProcessTimes(
handle,
&mut ftime as *mut FILETIME,
&mut ftime as *mut FILETIME,
&mut fsys as *mut FILETIME,
&mut fuser as *mut FILETIME,
);
}
// FIXME: should these values be stored in one place to make use of
// `MINIMUM_CPU_UPDATE_INTERVAL`?
GetSystemTimes(
&mut fglobal_idle_time as *mut FILETIME,
&mut fglobal_kernel_time as *mut FILETIME,
&mut fglobal_user_time as *mut FILETIME,
);
let mut sys: ULARGE_INTEGER = std::mem::zeroed();
memcpy(
&mut sys as *mut ULARGE_INTEGER as *mut c_void,
&mut fsys as *mut FILETIME as *mut c_void,
size_of::<FILETIME>(),
);
let mut user: ULARGE_INTEGER = std::mem::zeroed();
memcpy(
&mut user as *mut ULARGE_INTEGER as *mut c_void,
&mut fuser as *mut FILETIME as *mut c_void,
size_of::<FILETIME>(),
);
let mut global_kernel_time: ULARGE_INTEGER = std::mem::zeroed();
memcpy(
&mut global_kernel_time as *mut ULARGE_INTEGER as *mut c_void,
&mut fglobal_kernel_time as *mut FILETIME as *mut c_void,
size_of::<FILETIME>(),
);
let mut global_user_time: ULARGE_INTEGER = std::mem::zeroed();
memcpy(
&mut global_user_time as *mut ULARGE_INTEGER as *mut c_void,
&mut fglobal_user_time as *mut FILETIME as *mut c_void,
size_of::<FILETIME>(),
);
let sys = *sys.QuadPart();
let user = *user.QuadPart();
let global_kernel_time = *global_kernel_time.QuadPart();
let global_user_time = *global_user_time.QuadPart();
let delta_global_kernel_time =
check_sub(global_kernel_time, p.cpu_calc_values.old_system_sys_cpu);
let delta_global_user_time =
check_sub(global_user_time, p.cpu_calc_values.old_system_user_cpu);
let delta_user_time = check_sub(user, p.cpu_calc_values.old_process_user_cpu);
let delta_sys_time = check_sub(sys, p.cpu_calc_values.old_process_sys_cpu);
p.cpu_calc_values.old_process_user_cpu = user;
p.cpu_calc_values.old_process_sys_cpu = sys;
p.cpu_calc_values.old_system_user_cpu = global_user_time;
p.cpu_calc_values.old_system_sys_cpu = global_kernel_time;
let denominator = delta_global_user_time.saturating_add(delta_global_kernel_time) as f32;
if denominator < 0.00001 {
p.cpu_usage = 0.;
return;
}
p.cpu_usage = 100.0
* (delta_user_time.saturating_add(delta_sys_time) as f32 / denominator)
* nb_cpus as f32;
}
}
pub(crate) fn update_disk_usage(p: &mut Process) {
let mut counters = MaybeUninit::<IO_COUNTERS>::uninit();
if let Some(handle) = p.get_handle() {
unsafe {
let ret = GetProcessIoCounters(handle, counters.as_mut_ptr());
if ret == 0 {
sysinfo_debug!("GetProcessIoCounters call failed on process {}", p.pid());
} else {
let counters = counters.assume_init();
p.old_read_bytes = p.read_bytes;
p.old_written_bytes = p.written_bytes;
p.read_bytes = counters.ReadTransferCount;
p.written_bytes = counters.WriteTransferCount;
}
}
}
}
pub(crate) fn update_memory(p: &mut Process) {
if let Some(handle) = p.get_handle() {
unsafe {
let mut pmc: PROCESS_MEMORY_COUNTERS_EX = zeroed();
if GetProcessMemoryInfo(
handle,
&mut pmc as *mut PROCESS_MEMORY_COUNTERS_EX as *mut c_void
as *mut PROCESS_MEMORY_COUNTERS,
size_of::<PROCESS_MEMORY_COUNTERS_EX>() as DWORD,
) != 0
{
p.memory = pmc.WorkingSetSize as _;
p.virtual_memory = pmc.PrivateUsage as _;
}
}
}
}
|