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MAC_PREPARE(3)	       FreeBSD Library Functions Manual		MAC_PREPARE(3)

NAME
     mac_prepare, mac_prepare_type, mac_prepare_file_label,
     mac_prepare_ifnet_label, mac_prepare_process_label	-- allocate appropri-
     ate storage for mac_t

SYNOPSIS
     #include <sys/mac.h>

     int
     mac_prepare(mac_t *mac, const char	*elements);

     int
     mac_prepare_type(mac_t *mac, const	char *name);

     int
     mac_prepare_file_label(mac_t *mac);

     int
     mac_prepare_ifnet_label(mac_t *mac);

     int
     mac_prepare_process_label(mac_t *mac);

DESCRIPTION
     The mac_prepare family of functions allocates the appropriate amount of
     storage and initializes *mac for use by mac_get(3).  When the resulting
     label is passed into the mac_get(3) functions, the	kernel will attempt to
     fill in the label elements	specified when the label was prepared.	Ele-
     ments are specified in a nul-terminated string, using commas to delimit
     fields.  Element names may	be prefixed with the `?' character to indicate
     that a failure by the kernel to retrieve that element should not be con-
     sidered fatal.

     The mac_prepare() function	accepts	a list of policy names as a parameter,
     and allocates the storage to fit those label elements accordingly.	 The
     remaining functions in the	family make use	of system defaults defined in
     mac.conf(5) instead of an explicit	elements argument, deriving the	de-
     fault from	the specified object type.

     mac_prepare_type()	allocates the storage to fit an	object label of	the
     type specified by the name	argument.  The mac_prepare_file_label(),
     mac_prepare_ifnet_label(),	and mac_prepare_process_label()	functions are
     equivalent	to invocations of mac_prepare_type() with arguments of "file",
     "ifnet", and "process" respectively.

RETURN VALUES
     Upon successful completion, the value 0 is	returned; otherwise the
     value -1 is returned and the global variable errno	is set to indicate the
     error.

SEE ALSO
     mac(3), mac_free(3), mac_get(3), mac_is_present(3), mac_set(3), mac(4),
     mac.conf(5), maclabel(7)

STANDARDS
     POSIX.1e is described in IEEE POSIX.1e draft 17.  Discussion of the draft
     continues on the cross-platform POSIX.1e implementation mailing list.  To
     join this list, see the FreeBSD POSIX.1e implementation page for more in-
     formation.

HISTORY
     Support for Mandatory Access Control was introduced in FreeBSD 5.0	as
     part of the TrustedBSD Project.  Support for generic object types first
     appeared in FreeBSD 5.2.

FreeBSD	13.0			August 22, 2003			  FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | STANDARDS | HISTORY

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