No cache version.
Caching disabled. Default setting for this page:enabled (code LNG204)
If the display is too slow, you can disable the user mode to view the cached version.
xattr_get
(PECL xattr >= 0.9.0)
xattr_get — Get an extended attribute
Description
$filename
, string $name
[, int $flags
= 0
] ) : stringThis function gets the value of an extended attribute of a file.
Extended attributes have two different namespaces: user
and root. The user namespace is available to all users, while the root namespace
is available only to users with root privileges. xattr operates on the user
namespace by default, but this can be changed with the
flags
parameter.
Parameters
-
filename
-
The file from which we get the attribute.
-
name
-
The name of the attribute.
-
flags
-
Supported xattr flags XATTR_DONTFOLLOW
Do not follow the symbolic link but operate on symbolic link itself. XATTR_ROOT
Set attribute in root (trusted) namespace. Requires root privileges.
Examples
Example #1 Checks if system administrator has signed the file
<?php
$file = '/usr/local/sbin/some_binary';
$signature = xattr_get($file, 'Root signature', XATTR_ROOT);
/* ... check if $signature is valid ... */
?>
See Also
- xattr_list() - Get a list of extended attributes
- xattr_set() - Set an extended attribute
- xattr_remove() - Remove an extended attribute
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-xattr-get.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.