debian man page for selabel_close

selabel_open(3) 					     SELinux API documentation						   selabel_open(3)

NAME
       selabel_open, selabel_close - userspace SELinux labeling interface.

SYNOPSIS
       #include <selinux/selinux.h>

       #include <selinux/label.h>

       struct selabel_handle *selabel_open(int backend,
					   struct selinux_opt *options,

					   unsigned nopt);

       void selabel_close(struct selabel_handle *hnd);

DESCRIPTION
       selabel_open  is used to initialize a labeling handle to be used for lookup operations.	The backend argument specifies which backend is to
       be opened; the list of current backends appears in BACKENDS below.

       The options argument should be NULL or a pointer to an array of selinux_opt structures of length nopt:

	      struct selinux_opt {
		  int	      type;
		  const char  *value;
	      };

       The available option types are described in GLOBAL OPTIONS below as well as in the documentation for each individual backend.   The  return
       value on success is a non-NULL value for use in subsequent label operations.

       selabel_close  terminates  use  of  a handle, freeing any internal resources associated with it.  After this call has been made, the handle
       must not be used again.

GLOBAL OPTIONS
       Global options which may be passed to selabel_open include the following:

       SELABEL_OPT_UNUSED
	      The option with a type code of zero is a no-op.  Thus an array of options may be initizalized to zero  and  any  untouched  elements
	      will not cause an error.

       SELABEL_OPT_VALIDATE
	      A  non-null  value  for  this option enables context validation.	By default, security_check_context(3) is used; a custom validation
	      function can be provided via selinux_set_callback(3).  Note that an invalid context may not be treated as  an  error  unless  it	is
	      actually encountered during a lookup operation.

BACKENDS
       SELABEL_CTX_FILE
	      File contexts backend, described in selabel_file(5).

       SELABEL_CTX_MEDIA
	      Media contexts backend, described in selabel_media(5).

       SELABEL_CTX_X
	      X Windows contexts backend, described in selabel_x(5).

       SELABEL_CTX_DB
	      Database objects contexts backend, described in selabel_db(5).

RETURN VALUE
       A non-NULL handle value is returned on success.	On error, NULL is returned and errno is set appropriately.

AUTHOR
       Eamon Walsh <ewalsh@tycho.nsa.gov>

SEE ALSO
       selabel_lookup(3), selabel_stats(3), selinux_set_callback(3), selinux(8)

								    18 Jun 2007 						   selabel_open(3)