NAME
mac_prepare,
mac_prepare_type,
mac_prepare_file_label,
mac_prepare_ifnet_label,
mac_prepare_process_label —
allocate appropriate 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. Elements 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 considered 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 default 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.
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.