xattr_get(3) [php man page]

XATTR_GET(3)								 1							      XATTR_GET(3)

xattr_get - Get an extended attribute

SYNOPSIS

       string xattr_get (string  $filename, string  $name, [int  $flags])

DESCRIPTION

	This 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

	      o $filename
		- The file from which we get the attribute.

	      o $name
		- The name of the attribute.

	      o $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.			    |
	      | 		|						    |
	      +-----------------+---------------------------------------------------+
RETURN VALUES

	Returns a string containing the value or FALSE if the attribute doesn't exist.

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(3), xattr_set(3), xattr_remove(3).

PHP Documentation Group 													      XATTR_GET(3)

XATTR_LIST(3)								 1							     XATTR_LIST(3)

xattr_list - Get a list of extended attributes

SYNOPSIS

       array xattr_list (string  $filename, [int  $flags])

DESCRIPTION

	This functions gets a list of names of extended attributes 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

	      o $filename
		- The path of the file.

	      o $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.			    |
	      | 		|						    |
	      +-----------------+---------------------------------------------------+
RETURN VALUES

	This function returns an array with names of extended attributes.

EXAMPLES

       Example #1

	      Prints names of all extended attributes of file

	      <?php
	      $file = 'some_file';
	      $root_attributes = xattr_list($file, XATTR_ROOT);
	      $user_attributes = xattr_list($file);

	      echo "Root attributes: 
";
	      foreach ($root_attributes as $attr_name) {
		  printf("%s
", $attr_name);
	      }

	      echo "
 User attributes: 
";
	      foreach ($attributes as $attr_name) {
		  printf("%s
", $attr_name);
	      }

	      ?>

SEE ALSO

       xattr_get(3).

PHP Documentation Group 													     XATTR_LIST(3)