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feature: Adds uid and gid collection (no GUI yet) (#375)

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Just adds uid and gid collection to the process collection step. This does not add GUI changes, that'll come later.
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Clement Tsang 2020-12-27 10:25:04 -05:00 committed by GitHub
parent c864f53d24
commit 30b2c2ea05
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1 changed files with 107 additions and 39 deletions
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146
src/app/data_harvester/processes.rs
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@ -79,6 +79,11 @@ pub struct ProcessHarvest {
pub total_write_bytes: u64,
pub process_state: String,
pub process_state_char: char,
/// This is the *effective* user ID.
pub uid: Option<u32>,
// pub real_uid: Option<u32>, // TODO: Add real user ID
pub gid: Option<u32>,
}
#[derive(Debug, Default, Clone)]
@ -87,6 +92,7 @@ pub struct PrevProcDetails {
pub total_write_bytes: u64,
pub cpu_time: f64,
pub proc_stat_path: PathBuf,
pub proc_status_path: PathBuf,
// pub proc_statm_path: PathBuf,
// pub proc_exe_path: PathBuf,
pub proc_io_path: PathBuf,
@ -100,6 +106,7 @@ impl PrevProcDetails {
proc_io_path: PathBuf::from(format!("/proc/{}/io", pid)),
// proc_exe_path: PathBuf::from(format!("/proc/{}/exe", pid)),
proc_stat_path: PathBuf::from(format!("/proc/{}/stat", pid)),
proc_status_path: PathBuf::from(format!("/proc/{}/status", pid)),
// proc_statm_path: PathBuf::from(format!("/proc/{}/statm", pid)),
proc_cmdline_path: PathBuf::from(format!("/proc/{}/cmdline", pid)),
..PrevProcDetails::default()
@ -115,11 +122,8 @@ fn cpu_usage_calculation(
use std::io::BufReader;
// From SO answer: https://stackoverflow.com/a/23376195
let mut path = std::path::PathBuf::new();
path.push("/proc");
path.push("stat");
let mut reader = BufReader::new(std::fs::File::open(path)?);
let mut reader = BufReader::new(std::fs::File::open("/proc/stat")?);
let mut first_line = String::new();
reader.read_line(&mut first_line)?;
@ -225,6 +229,42 @@ fn get_linux_cpu_usage(
}
}
#[cfg(target_os = "linux")]
fn get_uid_and_gid(path: &PathBuf) -> (Option<u32>, Option<u32>) {
// FIXME: [OPT] - can we merge our /stat and /status calls?
use std::io::prelude::*;
use std::io::BufReader;
if let Ok(file) = std::fs::File::open(path) {
let reader = BufReader::new(file);
let mut lines = reader.lines().skip(8);
let (_real_uid, effective_uid) = if let Some(Ok(read_uid_line)) = lines.next() {
let mut split_whitespace = read_uid_line.split_whitespace().skip(1);
(
split_whitespace.next().and_then(|x| x.parse::<u32>().ok()),
split_whitespace.next().and_then(|x| x.parse::<u32>().ok()),
)
} else {
(None, None)
};
let (_real_gid, effective_gid) = if let Some(Ok(read_gid_line)) = lines.next() {
let mut split_whitespace = read_gid_line.split_whitespace().skip(1);
(
split_whitespace.next().and_then(|x| x.parse::<u32>().ok()),
split_whitespace.next().and_then(|x| x.parse::<u32>().ok()),
)
} else {
(None, None)
};
(effective_uid, effective_gid)
} else {
(None, None)
}
}
#[allow(clippy::too_many_arguments)]
#[cfg(target_os = "linux")]
fn read_proc(
@ -357,6 +397,8 @@ fn read_proc(
(0, 0, 0, 0)
};
let (uid, gid) = get_uid_and_gid(&pid_stat.proc_status_path);
Ok(ProcessHarvest {
pid,
parent_pid,
@ -371,6 +413,8 @@ fn read_proc(
write_bytes_per_sec,
process_state,
process_state_char,
uid,
gid,
})
}
@ -472,26 +516,54 @@ pub fn get_process_data(
};
let disk_usage = process_val.disk_usage();
process_vector.push(ProcessHarvest {
pid: process_val.pid(),
parent_pid: process_val.parent(),
name,
command,
mem_usage_percent: if mem_total_kb > 0 {
process_val.memory() as f64 * 100.0 / mem_total_kb as f64
} else {
0.0
},
mem_usage_bytes: process_val.memory() * 1024,
cpu_usage_percent: process_cpu_usage,
read_bytes_per_sec: disk_usage.read_bytes,
write_bytes_per_sec: disk_usage.written_bytes,
total_read_bytes: disk_usage.total_read_bytes,
total_write_bytes: disk_usage.total_written_bytes,
process_state: process_val.status().to_string().to_string(),
process_state_char: convert_process_status_to_char(process_val.status()),
});
#[cfg(target_os = "macos")]
{
process_vector.push(ProcessHarvest {
pid: process_val.pid(),
parent_pid: process_val.parent(),
name,
command,
mem_usage_percent: if mem_total_kb > 0 {
process_val.memory() as f64 * 100.0 / mem_total_kb as f64
} else {
0.0
},
mem_usage_bytes: process_val.memory() * 1024,
cpu_usage_percent: process_cpu_usage,
read_bytes_per_sec: disk_usage.read_bytes,
write_bytes_per_sec: disk_usage.written_bytes,
total_read_bytes: disk_usage.total_read_bytes,
total_write_bytes: disk_usage.total_written_bytes,
process_state: process_val.status().to_string().to_string(),
process_state_char: convert_process_status_to_char(process_val.status()),
uid: Some(process_val.uid),
gid: Some(process_val.gid),
});
}
#[cfg(not(target_os = "macos"))]
{
process_vector.push(ProcessHarvest {
pid: process_val.pid(),
parent_pid: process_val.parent(),
name,
command,
mem_usage_percent: if mem_total_kb > 0 {
process_val.memory() as f64 * 100.0 / mem_total_kb as f64
} else {
0.0
},
mem_usage_bytes: process_val.memory() * 1024,
cpu_usage_percent: process_cpu_usage,
read_bytes_per_sec: disk_usage.read_bytes,
write_bytes_per_sec: disk_usage.written_bytes,
total_read_bytes: disk_usage.total_read_bytes,
total_write_bytes: disk_usage.total_written_bytes,
process_state: process_val.status().to_string().to_string(),
process_state_char: convert_process_status_to_char(process_val.status()),
uid: None,
gid: None,
});
}
}
Ok(process_vector)
@ -500,22 +572,18 @@ pub fn get_process_data(
#[allow(unused_variables)]
#[cfg(not(target_os = "linux"))]
fn convert_process_status_to_char(status: ProcessStatus) -> char {
if cfg!(target_os = "macos") {
#[cfg(target_os = "macos")]
{
match status {
ProcessStatus::Run => 'R',
ProcessStatus::Sleep => 'S',
ProcessStatus::Idle => 'D',
ProcessStatus::Zombie => 'Z',
_ => '?',
}
#[cfg(target_os = "macos")]
{
match status {
ProcessStatus::Run => 'R',
ProcessStatus::Sleep => 'S',
ProcessStatus::Idle => 'D',
ProcessStatus::Zombie => 'Z',
_ => '?',
}
#[cfg(not(target_os = "macos"))]
{
'?'
}
} else {
}
#[cfg(not(target_os = "macos"))]
{
'R'
}
}