Server : Apache System : Linux dedi-14684855.grupobig.com 5.14.0-611.49.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Apr 21 16:39:08 EDT 2026 x86_64 User : grupo692 ( 1004) PHP Version : 8.3.33 Disable Function : NONE Directory : /lib/python3.9/site-packages/cloudinit/sources/helpers/__pycache__/ |
a
'�Dg�. � @ sB d dl Z d dlZd dlZd dlZd dlZd dlmZ d dlmZ e � e
�Z dZ dZ
dZdZdZd ZdZd
Zd Zd Ze�e�Ze�e�Zee Zd
Zd
ZdZ dZ d Z dZ dZ dZ!d
Z"dZ#dZ$edg d��Z%edddg�Z&edg d��Z'G dd� de(�Z)dd � Z*d d � Z+d-d d �Z,d!d"� Z-d#d$� Z.d%d&� Z/d'd(� Z0d)d*� Z1d+d,� Z2dS ).� N)�
namedtuple)�util� � � � � i�� �< ZIHHIIZBHiII� � � � � �RTAAttr)�length�rta_type�data�InterfaceOperstate�ifname� operstate�
NetlinkHeader)r �type�flags�seq�pidc @ s e Zd ZdZdS )�NetlinkCreateSocketErrorz5Raised if netlink socket fails during create or bind.N)�__name__�
__module__� __qualname__�__doc__� r r �E/usr/lib/python3.9/site-packages/cloudinit/sources/helpers/netlink.pyr 5 s r c
C s| z4t � t jt jt j�} | �t�� tf� | �d� W n8 t j yl } z d| }t
|�|�W Y d}~n
d}~0 0 t � d� | S )au Creates netlink socket and bind on netlink group to catch interface
down/up events. The socket will bound only on RTMGRP_LINK (which only
includes RTM_NEWLINK/RTM_DELLINK/RTM_GETLINK events). The socket is set to
non-blocking mode since we're only receiving messages.
:returns: netlink socket in non-blocking mode
:raises: NetlinkCreateSocketError
r z*Exception during netlink socket create: %sNzCreated netlink socket)
�socketZ
AF_NETLINKZSOCK_RAWZ
NETLINK_ROUTEZbind�os�getpid� RTMGRP_LINKZ setblocking�errorr �LOG�debug)�netlink_socket�e�msgr r r! �create_bound_netlink_socket9 s �
r, c C s^ | dusJ d��t | �tks$J d��t�t| dt� �\}}}}}t�d|� t|||||�S )a Gets netlink message type and length
:param: data read from netlink socket
:returns: netlink message type
:raises: AssertionError if data is None or data is not >= NLMSGHDR_SIZE
struct nlmsghdr {
__u32 nlmsg_len; /* Length of message including header */
__u16 nlmsg_type; /* Type of message content */
__u16 nlmsg_flags; /* Additional flags */
__u32 nlmsg_seq; /* Sequence number */
__u32 nlmsg_pid; /* Sender port ID */
};
N� data is nonez+data is smaller than netlink message headerzGot netlink msg of type %d) �len�
NLMSGHDR_SIZE�struct�unpack� NLMSGHDR_FMT�MSG_TYPE_OFFSETr' r( r )r Zmsg_lenZmsg_typer r r r r r! �get_netlink_msg_headerO s
�� � r4 c C s^ | dusJ d��t � | gg g |�\}}}| |vr4dS t�d� | �t�}|du rZt�d� |S )a� Select and read from the netlink socket if ready.
:param: netlink_socket: specify which socket object to read from
:param: timeout: specify a timeout value (integer) to wait while reading,
if none, it will block indefinitely until socket ready for read
:returns: string of data read (max length = <MAX_SIZE>) from socket,
if no data read, returns None
:raises: AssertionError if netlink_socket is None
N�netlink socket is nonez netlink socket ready for readz,Reading from Netlink socket returned no data)�selectr' r( Zrecv�MAX_SIZEr& )r) �timeoutZread_set�_r r r r! �read_netlink_socketh s
r: c C s� | dusJ d��t |t�s"J d��|tks2J d��d }}d}z0tjd| |d�d }tjd| |d d�d }W n tjy� Y dS 0 | |t || � }t|||�S ) a( Unpack a single rta attribute.
:param: data: string of data read from netlink socket
:param: offset: starting offset of RTA Attribute
:return: RTAAttr object with length, type and data. On error, return None.
:raises: AssertionError if data is None or offset is not integer.
Nr- zoffset is not integerz'rta offset is less than expected lengthr �H)�offsetr )�
isinstance�int�RTATTR_START_OFFSETr0 � unpack_fromr& �RTA_DATA_START_OFFSETr )r r< r r Z attr_datar r r! �unpack_rta_attr s �� rB c C s� | dusJ d��t | �tks$J d��d }}t}|t | �kr�t| |�}|r�|jdkrVq�t|jt t }||j| 7 }|jtkr�t|j�}q0|jt kr0t
� |jd�}|� d�}q0|r�|du r�dS t
�d||� t||�S )a� Reads Interface name and operational state from RTA Data.
:param: data: string of data read from netlink socket
:returns: InterfaceOperstate object containing if_name and oper_state.
None if data does not contain valid IFLA_OPERSTATE and
IFLA_IFNAME messages.
:raises: AssertionError if data is None or length of data is
smaller than RTATTR_START_OFFSET.
Nr- z2length of data is smaller than RTATTR_START_OFFSETr zutf-8� z!rta attrs: ifname %s operstate %d)r. r? rB r �
PAD_ALIGNMENTr �IFLA_OPERSTATE�ordr � IFLA_IFNAMEr Z
decode_binary�stripr' r( r )r r r r< �attr�padlenZinterface_namer r r! �read_rta_oper_state� s0
��
�
rK c s6 t �d� d�� �fdd�}t| dtgttg|� �S )z�Block until a single nic is attached.
:param: netlink_socket: netlink_socket to receive events
:param: existing_nics: List of existing nics so that we can skip them.
:raises: AssertionError if netlink_socket is none.
z!Preparing to wait for nic attach.Nc s | � v r dS | �dS )NTFr ��iname�carrier� prevCarrier��
existing_nicsr r r! �should_continue_cb� s z5wait_for_nic_attach_event.<locals>.should_continue_cb)r' r( �read_netlink_messages� RTM_NEWLINK�OPER_UP� OPER_DOWN)r) rQ rR r rP r! �wait_for_nic_attach_event� s
�rW c s2 t �d� d� � fdd�}t| dtgtg|� � S )z�Block until a single nic is detached and its operational state is down.
:param: netlink_socket: netlink_socket to receive events.
z!Preparing to wait for nic detach.Nc s | � dS )NFr rL �r r r! rR � s z5wait_for_nic_detach_event.<locals>.should_continue_cb)r' r( rS � RTM_DELLINKrV )r) rR r rX r! �wait_for_nic_detach_event� s
�rZ c sf | dusJ d��� dus J d��t � �dks4J d��� fdd�}t�d� t| � ttgttg|� dS ) a� Block until media disconnect and connect has happened on an interface.
Listens on netlink socket to receive netlink events and when the carrier
changes from 0 to 1, it considers event has happened and
return from this function
:param: netlink_socket: netlink_socket to receive events
:param: ifname: Interface name to lookout for netlink events
:raises: AssertionError if netlink_socket is None or ifname is None.
Nr5 zinterface name is noner z interface name cannot be emptyc s( |t ko|tk}|r$t�d� � dS dS )Nz Media switch happened on %s.FT)rV rU r' r( )rM rN rO Z isVnetSwitchrX r r! rR � s
z=wait_for_media_disconnect_connect.<locals>.should_continue_cbz1Wait for media disconnect and reconnect to happen)r. r' r( rS rT rY rU rV )r) r rR r rX r! �!wait_for_media_disconnect_connect� s
�r[ c C sx | du rt d��t� }t}t}t| t�}|du r2q t�dt|�� ||7 }t�dt|�� d} t|�}
| |
k �rf|| d� } t| �tk r�t�d� �qft | �} t| �| j
k r�t�d� �qf| j
t d t d @ }
| |
} t�d | � | j |vr�qft
| �}|du �rt�d
|� qf|du�r:|j|k�r:t�d |j|� qf|j|v�rHqf|}|j}||j||�sfdS qf|| d� }q dS ) a� Reads from the netlink socket until the condition specified by
the continuation callback is met.
:param: netlink_socket: netlink_socket to receive events.
:param: ifname_filter: if not None, will only listen for this interface.
:param: rtm_types: Type of netlink events to listen for.
:param: operstates: Operational states to listen.
:param: should_continue_callback: Specifies when to stop listening.
NzNetlink socket is nonezread %d bytes from socketz Length of data after concat %dr z#Data is smaller than netlink headerz*Partial data. Smaller than netlink messager z"offset to next netlink message: %dz!Failed to read rta attributes: %sz6Ignored netlink event on interface %s. Waiting for %s.)� RuntimeError�bytesrU r: �SELECT_TIMEOUTr' r( r. r/ r4 r rD r rK r r )r) Z
ifname_filterZ rtm_typesZ
operstatesZshould_continue_callbackr rN rO Z recv_datar< ZdatalenZnl_msgZnlheaderrJ Zinterface_stater r r! rS sh
�
��� �rS )N)3Zloggingr# r6 r" r0 � collectionsr Z cloudinitr Z getLoggerr r' r% rT rY Z RTM_GETLINKZ RTM_SETLINKr7 r3 r^ r2 Z
IFINFOMSG_FMT�calcsizer/ ZIFINFOMSG_SIZEr? rA rD rG rE Z OPER_UNKNOWNZOPER_NOTPRESENTrV ZOPER_LOWERLAYERDOWNZ OPER_TESTINGZ OPER_DORMANTrU r r r r\ r r, r4 r: rB rK rW rZ r[ rS r r r r! �<module> s\
�
%