remove src/tools/procfs.rs, use proxmox::sys::linux::procfs instead

This commit is contained in:
Dietmar Maurer 2019-08-03 16:26:44 +02:00
parent 779e4c90b1
commit fd329bdcd7
4 changed files with 3 additions and 426 deletions

View File

@ -62,7 +62,7 @@ impl UPID {
Ok(UPID {
pid,
pstart: tools::procfs::read_proc_starttime(pid)?,
pstart: proxmox::sys::linux::procfs::read_proc_starttime(pid)?,
starttime: Local::now().timestamp(),
task_id,
worker_type: worker_type.to_owned(),

View File

@ -36,7 +36,7 @@ lazy_static! {
static ref WORKER_TASK_LIST: Mutex<HashMap<usize, Arc<WorkerTask>>> = Mutex::new(HashMap::new());
static ref MY_PID: i32 = unsafe { libc::getpid() };
static ref MY_PID_PSTART: u64 = crate::tools::procfs::read_proc_pid_stat(*MY_PID).unwrap().starttime;
static ref MY_PID_PSTART: u64 = proxmox::sys::linux::procfs::read_proc_pid_stat(*MY_PID).unwrap().starttime;
}
/// Test if the task is still running
@ -49,7 +49,7 @@ pub fn worker_is_active(upid: &UPID) -> bool {
false
}
} else {
match crate::tools::procfs::check_process_running_pstart(upid.pid, upid.pstart) {
match proxmox::sys::linux::procfs::check_process_running_pstart(upid.pid, upid.pstart) {
Some(_) => true,
_ => false,
}

View File

@ -30,7 +30,6 @@ pub mod fs;
pub mod tty;
pub mod signalfd;
pub mod daemon;
pub mod procfs;
pub mod acl;
pub mod xattr;
pub mod futures;

View File

@ -1,422 +0,0 @@
use failure::*;
use std::u32;
use std::fs::OpenOptions;
use std::io::{BufRead, BufReader};
use std::collections::HashSet;
use std::process;
use std::net::{Ipv4Addr, Ipv6Addr};
use proxmox::tools::fs::file_read_firstline;
use lazy_static::lazy_static;
use regex::Regex;
use libc;
/// POSIX sysconf call
pub fn sysconf(name: i32) -> i64 {
extern { fn sysconf(name: i32) -> i64; }
unsafe { sysconf(name) }
}
lazy_static! {
static ref CLOCK_TICKS: f64 = sysconf(libc::_SC_CLK_TCK) as f64;
}
pub struct ProcFsPidStat {
pub status: u8,
pub utime: u64,
pub stime: u64,
pub starttime: u64,
pub vsize: u64,
pub rss: i64,
}
pub fn read_proc_pid_stat(pid: libc::pid_t) -> Result<ProcFsPidStat, Error> {
let statstr = file_read_firstline(format!("/proc/{}/stat", pid))?;
lazy_static! {
static ref REGEX: Regex = Regex::new(concat!(
r"^(?P<pid>\d+) \(.*\) (?P<status>\S) -?\d+ -?\d+ -?\d+ -?\d+ -?\d+ \d+ \d+ \d+ \d+ \d+ ",
r"(?P<utime>\d+) (?P<stime>\d+) -?\d+ -?\d+ -?\d+ -?\d+ -?\d+ 0 ",
r"(?P<starttime>\d+) (?P<vsize>\d+) (?P<rss>-?\d+) ",
r"\d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ -?\d+ -?\d+ \d+ \d+ \d+"
)).unwrap();
}
if let Some(cap) = REGEX.captures(&statstr) {
if pid != cap["pid"].parse::<i32>().unwrap() {
bail!("unable to read pid stat for process '{}' - got wrong pid", pid);
}
return Ok(ProcFsPidStat {
status: cap["status"].as_bytes()[0],
utime: cap["utime"].parse::<u64>().unwrap(),
stime: cap["stime"].parse::<u64>().unwrap(),
starttime: cap["starttime"].parse::<u64>().unwrap(),
vsize: cap["vsize"].parse::<u64>().unwrap(),
rss: cap["rss"].parse::<i64>().unwrap() * 4096,
});
}
bail!("unable to read pid stat for process '{}'", pid);
}
pub fn read_proc_starttime(pid: libc::pid_t) -> Result<u64, Error> {
let info = read_proc_pid_stat(pid)?;
Ok(info.starttime)
}
pub fn check_process_running(pid: libc::pid_t) -> Option<ProcFsPidStat> {
if let Ok(info) = read_proc_pid_stat(pid) {
if info.status != 'Z' as u8 {
return Some(info);
}
}
None
}
pub fn check_process_running_pstart(pid: libc::pid_t, pstart: u64) -> Option<ProcFsPidStat> {
if let Some(info) = check_process_running(pid) {
if info.starttime == pstart {
return Some(info);
}
}
None
}
pub fn read_proc_uptime() -> Result<(f64, f64), Error> {
let path = "/proc/uptime";
let line = file_read_firstline(&path)?;
let mut values = line.split_whitespace().map(|v| v.parse::<f64>());
match (values.next(), values.next()) {
(Some(Ok(up)), Some(Ok(idle))) => return Ok((up, idle)),
_ => bail!("Error while parsing '{}'", path),
}
}
pub fn read_proc_uptime_ticks() -> Result<(u64, u64), Error> {
let (mut up, mut idle) = read_proc_uptime()?;
up *= *CLOCK_TICKS;
idle *= *CLOCK_TICKS;
Ok((up as u64, idle as u64))
}
#[derive(Debug)]
pub struct ProcFsMemInfo {
pub memtotal: u64,
pub memfree: u64,
pub memused: u64,
pub memshared: u64,
pub swaptotal: u64,
pub swapfree: u64,
pub swapused: u64,
}
pub fn read_meminfo() -> Result<ProcFsMemInfo, Error> {
let path = "/proc/meminfo";
let file = OpenOptions::new().read(true).open(&path)?;
let mut meminfo = ProcFsMemInfo {
memtotal: 0,
memfree: 0,
memused: 0,
memshared: 0,
swaptotal: 0,
swapfree: 0,
swapused: 0,
};
let (mut buffers, mut cached) = (0, 0);
for line in BufReader::new(&file).lines() {
let content = line?;
let mut content_iter = content.split_whitespace();
if let (Some(key), Some(value)) = (content_iter.next(), content_iter.next()) {
match key {
"MemTotal:" => meminfo.memtotal = value.parse::<u64>()? * 1024,
"MemFree:" => meminfo.memfree = value.parse::<u64>()? * 1024,
"SwapTotal:" => meminfo.swaptotal = value.parse::<u64>()? * 1024,
"SwapFree:" => meminfo.swapfree = value.parse::<u64>()? * 1024,
"Buffers:" => buffers = value.parse::<u64>()? * 1024,
"Cached:" => cached = value.parse::<u64>()? * 1024,
_ => continue,
}
}
}
meminfo.memfree += buffers + cached;
meminfo.memused = meminfo.memtotal - meminfo.memfree;
meminfo.swapused = meminfo.swaptotal - meminfo.swapfree;
let spages_line = file_read_firstline("/sys/kernel/mm/ksm/pages_sharing")?;
meminfo.memshared = spages_line.trim_end().parse::<u64>()? * 4096;
Ok(meminfo)
}
#[derive(Clone, Debug)]
pub struct ProcFsCPUInfo {
pub user_hz: f64,
pub mhz: f64,
pub model: String,
pub hvm: bool,
pub sockets: usize,
pub cpus: usize,
}
static CPU_INFO: Option<ProcFsCPUInfo> = None;
pub fn read_cpuinfo() -> Result<ProcFsCPUInfo, Error> {
if let Some(cpu_info) = &CPU_INFO { return Ok(cpu_info.clone()); }
let path = "/proc/cpuinfo";
let file = OpenOptions::new().read(true).open(&path)?;
let mut cpuinfo = ProcFsCPUInfo {
user_hz: *CLOCK_TICKS,
mhz: 0.0,
model: String::new(),
hvm: false,
sockets: 0,
cpus: 0,
};
let mut socket_ids = HashSet::new();
for line in BufReader::new(&file).lines() {
let content = line?;
if content.is_empty() { continue; }
let mut content_iter = content.split(":");
match (content_iter.next(), content_iter.next()) {
(Some(key), Some(value)) => {
match key.trim_end() {
"processor" => cpuinfo.cpus += 1,
"model name" => cpuinfo.model = value.trim().to_string(),
"cpu MHz" => cpuinfo.mhz = value.trim().parse::<f64>()?,
"flags" => cpuinfo.hvm = value.contains(" vmx ") || value.contains(" svm "),
"physical id" => {
let id = value.trim().parse::<u8>()?;
socket_ids.insert(id);
},
_ => continue,
}
},
_ => bail!("Error while parsing '{}'", path),
}
}
cpuinfo.sockets = socket_ids.len();
Ok(cpuinfo)
}
#[derive(Debug)]
pub struct ProcFsMemUsage {
pub size: u64,
pub resident: u64,
pub shared: u64,
}
pub fn read_memory_usage() -> Result<ProcFsMemUsage, Error> {
let path = format!("/proc/{}/statm", process::id());
let line = file_read_firstline(&path)?;
let mut values = line.split_whitespace().map(|v| v.parse::<u64>());
let ps = 4096;
match (values.next(), values.next(), values.next()) {
(Some(Ok(size)), Some(Ok(resident)), Some(Ok(shared))) =>
Ok(ProcFsMemUsage {
size: size * ps,
resident: resident * ps,
shared: shared * ps,
}),
_ => bail!("Error while parsing '{}'", path),
}
}
#[derive(Debug)]
pub struct ProcFsNetDev {
pub device: String,
pub receive: u64,
pub send: u64,
}
pub fn read_proc_net_dev() -> Result<Vec<ProcFsNetDev>, Error> {
let path = "/proc/net/dev";
let file = OpenOptions::new().read(true).open(&path)?;
let mut result = Vec::new();
for line in BufReader::new(&file).lines().skip(2) {
let content = line?;
let mut iter = content.split_whitespace();
match (iter.next(), iter.next(), iter.skip(7).next()) {
(Some(device), Some(receive), Some(send)) => {
result.push(ProcFsNetDev {
device: device[..device.len()-1].to_string(),
receive: receive.parse::<u64>()?,
send: send.parse::<u64>()?,
});
},
_ => bail!("Error while parsing '{}'", path),
}
}
Ok(result)
}
fn hex_nibble(c: u8) -> Result<u8, Error> {
Ok(match c {
b'0'..=b'9' => c - b'0',
b'a'..=b'f' => c - b'a' + 0xa,
b'A'..=b'F' => c - b'A' + 0xa,
_ => bail!("not a hex digit: {}", c as char),
})
}
fn hexstr_to_ipv4addr<T: AsRef<[u8]>>(hex: T) -> Result<Ipv4Addr, Error> {
let hex = hex.as_ref();
if hex.len() != 8 {
bail!("Error while converting hex string to IPv4 address: unexpected string length");
}
let mut addr: [u8; 4] = unsafe { std::mem::uninitialized() };
for i in 0..4 {
addr[3 - i] = (hex_nibble(hex[i * 2])? << 4) + hex_nibble(hex[i * 2 + 1])?;
}
Ok(Ipv4Addr::from(addr))
}
#[derive(Debug)]
pub struct ProcFsNetRoute {
pub dest: Ipv4Addr,
pub gateway: Ipv4Addr,
pub mask: Ipv4Addr,
pub metric: u32,
pub mtu: u32,
pub iface: String,
}
pub fn read_proc_net_route() -> Result<Vec<ProcFsNetRoute>, Error> {
let path = "/proc/net/route";
let file = OpenOptions::new().read(true).open(&path)?;
let mut result = Vec::new();
for line in BufReader::new(&file).lines().skip(1) {
let content = line?;
if content.is_empty() { continue; }
let mut iter = content.split_whitespace();
let mut next = || iter.next()
.ok_or(format_err!("Error while parsing '{}'", path));
let (iface, dest, gateway) = (next()?, next()?, next()?);
for _ in 0..3 { next()?; }
let (metric, mask, mtu) = (next()?, next()?, next()?);
result.push(ProcFsNetRoute {
dest: hexstr_to_ipv4addr(dest)?,
gateway: hexstr_to_ipv4addr(gateway)?,
mask: hexstr_to_ipv4addr(mask)?,
metric: metric.parse()?,
mtu: mtu.parse()?,
iface: iface.to_string(),
});
}
Ok(result)
}
fn hexstr_to_ipv6addr<T: AsRef<[u8]>>(hex: T) -> Result<Ipv6Addr, Error> {
let hex = hex.as_ref();
if hex.len() != 32 {
bail!("Error while converting hex string to IPv6 address: unexpected string length");
}
let mut addr: [u8; 16] = unsafe { std::mem::uninitialized() };
for i in 0..16 {
addr[i] = (hex_nibble(hex[i * 2])? << 4) + hex_nibble(hex[i * 2 + 1])?;
}
Ok(Ipv6Addr::from(addr))
}
fn hexstr_to_u8<T: AsRef<[u8]>>(hex: T) -> Result<u8, Error> {
let hex = hex.as_ref();
if hex.len() != 2 {
bail!("Error while converting hex string to u8: unexpected string length");
}
Ok((hex_nibble(hex[0])? << 4) + hex_nibble(hex[1])?)
}
fn hexstr_to_u32<T: AsRef<[u8]>>(hex: T) -> Result<u32, Error> {
let hex = hex.as_ref();
if hex.len() != 8 {
bail!("Error while converting hex string to u32: unexpected string length");
}
let mut bytes: [u8; 4] = unsafe { std::mem::uninitialized() };
for i in 0..4 {
bytes[i] = (hex_nibble(hex[i * 2])? << 4) + hex_nibble(hex[i * 2 + 1])?;
}
Ok(u32::from_be_bytes(bytes))
}
#[derive(Debug)]
pub struct ProcFsNetIPv6Route {
pub dest: Ipv6Addr,
pub prefix: u8,
pub gateway: Ipv6Addr,
pub metric: u32,
pub iface: String,
}
pub fn read_proc_net_ipv6_route() -> Result<Vec<ProcFsNetIPv6Route>, Error> {
let path = "/proc/net/ipv6_route";
let file = OpenOptions::new().read(true).open(&path)?;
let mut result = Vec::new();
for line in BufReader::new(&file).lines() {
let content = line?;
if content.is_empty() { continue; }
let mut iter = content.split_whitespace();
let mut next = || iter.next()
.ok_or_else(|| format_err!("Error while parsing '{}'", path));
let (dest, prefix) = (next()?, next()?);
for _ in 0..2 { next()?; }
let (nexthop, metric) = (next()?, next()?);
for _ in 0..3 { next()?; }
let iface = next()?;
result.push(ProcFsNetIPv6Route {
dest: hexstr_to_ipv6addr(dest)?,
prefix: hexstr_to_u8(prefix)?,
gateway: hexstr_to_ipv6addr(nexthop)?,
metric: hexstr_to_u32(metric)?,
iface: iface.to_string(),
});
}
Ok(result)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_read_proc_net_route() {
read_proc_net_route().unwrap();
}
#[test]
fn test_read_proc_net_ipv6_route() {
read_proc_net_ipv6_route().unwrap();
}
}