관리-도구
편집 파일: plugin_sysctl.cpython-36.opt-1.pyc
3 �<�e� � @ s� d dl Z ddlmZ ddlT d dlZd dlT d dlmZ d dl j Z d dl Z d dl Z ej j� ZddgZdd gZG d d � d ej�ZdS ) � N� )�base)�*)�commandsZbase_reachable_timeZ retrans_timez /run/sysctl.dz /etc/sysctl.dc s� e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zd d � Ze j fd d �Z dd� Z dd� Z dd� Zdd� Zdd� Zddd�Z� ZS ) � SysctlPluginaI `sysctl`:: Sets various kernel parameters at runtime. + This plug-in is used for applying custom `sysctl` settings and should only be used to change system settings that are not covered by other *TuneD* plug-ins. If the settings are covered by other *TuneD* plug-ins, use those plug-ins instead. + The syntax for this plug-in is `_key_=_value_`, where `_key_` is the same as the key name provided by the `sysctl` utility. + .Adjusting the kernel runtime kernel.sched_min_granularity_ns value ==== ---- [sysctl] kernel.sched_min_granularity_ns=3000000 ---- ==== c s$ t t| �j||� d| _t� | _d S )NT)�superr �__init__Z_has_dynamic_optionsr �_cmd)�self�args�kwargs)� __class__� �#/usr/lib/python3.6/plugin_sysctl.pyr * s zSysctlPlugin.__init__c C sh d|_ d|_| j|j�}| jj|i �|_t|j�dkr\tj d� | j |� i |_| jj |� |j |_ d S )NFTr z0recovering old sysctl settings from previous run)Z_has_dynamic_tuningZ_has_static_tuning� _storage_key�name�_storage�get�_sysctl_original�len�log�info�_instance_unapply_static�unsetZoptions�_sysctl)r �instance� storage_keyr r r �_instance_init/ s zSysctlPlugin._instance_initc C s | j |j�}| jj|� d S )N)r r r r )r r r r r r �_instance_cleanup? s z SysctlPlugin._instance_cleanupc C s� xzt |jj� �D ]h\}}| j|�}|d kr:tjd| � q| jj| jj |��}| j ||�}|d k r||j |< | j ||� qW | j |j�}| jj||j � | jjtjtj�r�tjd� | j|j� d S )NzDsysctl option %s will not be set, failed to read the original value.zreapplying system sysctl)�listr �items� _read_sysctlr �error� _variables�expandr Zunquote� _process_assignment_modifiersr � _write_sysctlr r r �setZ _global_cfgZget_bool�constsZCFG_REAPPLY_SYSCTLZCFG_DEF_REAPPLY_SYSCTLr �_apply_system_sysctl)r r �option�value�original_valueZ new_valuer r r r �_instance_apply_staticC s" z#SysctlPlugin._instance_apply_staticc C sv d}d}xht |jj� �D ]V\}}| j|�}| j| jj|�|�}|d k r| j|| jj |�| jj |�|�dkrd}qW |S )NTF) r r r r! r% r# r$ Z _verify_valuer Z remove_ws)r r �ignore_missingZdevices�retr* r+ Zcurr_valr r r �_instance_verify_staticY s $z$SysctlPlugin._instance_verify_staticc C s, x&t |jj� �D ]\}}| j||� qW d S )N)r r r r& )r r Zrollbackr* r+ r r r r e s z%SysctlPlugin._instance_unapply_staticc C s� i }x\t D ]T}ytj|�}W n tk r2 w Y nX x(|D ] }|jd�sJq:||kr:|||< q:W q W x4t|j� �D ]$}|| }d||f }| j||� qpW | jd|� d S )Nz.confz%s/%sz/etc/sysctl.conf)�SYSCTL_CONFIG_DIRS�os�listdir�OSError�endswith�sorted�keys�_apply_sysctl_config_file)r �instance_sysctl�files�d�flistZfname�pathr r r r) i s z!SysctlPlugin._apply_system_sysctlc C s� t jd| � yPt|d��.}x&t|d�D ]\}}| j||||� q(W W d Q R X t jd| � W nH ttfk r� } z(|jtjkr�t j d|t |�f � W Y d d }~X nX d S )Nz%Applying sysctl settings from file %s�rr z.Finished applying sysctl settings from file %sz.Error reading sysctl settings from file %s: %s) r �debug�open� enumerate�_apply_sysctl_config_liner4 �IOError�errno�ENOENTr" �str)r r= r9 �f�lineno�line�er r r r8 | s z&SysctlPlugin._apply_sysctl_config_filec C s� |j � }t|�dks,|d dks,|d dkr0d S |jdd�}t|�dkr^tjd||f � d S |\}}|j � }t|�dkr�tjd||f � d S |j � }||kr�| jj|| �}||kr�tjd|||f � | j||d d � d S ) Nr �#�;�=r � z Syntax error in file %s, line %dz2Overriding sysctl parameter '%s' from '%s' to '%s'T)r. ) �stripr �splitr r" r# r$ r r& ) r r= rH rI r9 Ztmpr* r+ Zinstance_valuer r r rB � s* $ z&SysctlPlugin._apply_sysctl_config_linec C s d| j j|dd� S )Nz /proc/sys/%sz./z/.)r Ztr)r r* r r r �_get_sysctl_path� s z SysctlPlugin._get_sysctl_pathc C s� | j |�}yht|d��B}d}x.t|�D ]"\}}|dkr&tjd| � d S q&W |j� }W d Q R X tjd||f � |S ttfk r� } z6|j t j kr�tjd| � ntjd|t |�f � d S d }~X nX d S )Nr> � r zGFailed to read sysctl parameter '%s', multi-line values are unsupportedz&Value of sysctl parameter '%s' is '%s'zBFailed to read sysctl parameter '%s', the parameter does not existz(Failed to read sysctl parameter '%s': %s) rQ r@ rA r r" rO r? r4 rC rD rE rF )r r* r= rG rI �ir+ rJ r r r r! � s( zSysctlPlugin._read_sysctlFc C s� | j |�}tjj|�tkr,tjd| � dS y6tjd||f � t|d��}|j |� W d Q R X dS t t fk r� } zJ|j t j kr�|r�tjntj}|d||f � ntjd||t|�f � dS d }~X nX d S )Nz+Refusing to set deprecated sysctl option %sFz%Setting sysctl parameter '%s' to '%s'�wTzIFailed to set sysctl parameter '%s' to '%s', the parameter does not existz/Failed to set sysctl parameter '%s' to '%s': %s)rQ r2 r= �basename�DEPRECATED_SYSCTL_OPTIONSr r" r? r@ �writer4 rC rD rE rF )r r* r+ r. r= rG rJ Zlog_funcr r r r& � s& zSysctlPlugin._write_sysctl)F)�__name__� __module__� __qualname__�__doc__r r r r- r0 r( Z ROLLBACK_SOFTr r) r8 rB rQ r! r& � __classcell__r r )r r r s r )�rerR r Z decoratorsZ tuned.logsZtuned� subprocessZtuned.utils.commandsr Z tuned.constsr( rD r2 Zlogsr r rV r1 ZPluginr r r r r �<module> s