mac_text(3)

NAME

mac_from_text, mac_to_text - convert MAC label to/from text

representation

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <sys/mac.h>
int
mac_from_text(mac_t *mac, const char *text);
int
mac_to_text(mac_t label, char **text);

DESCRIPTION

The mac_from_text() function converts the text representa

tion of a label
into the internal policy label format (mac_t) and places it

in *mac,
which must later be freed with free(3).

The mac_to_text() function allocates storage for *text,

which will be set
to the text representation of label.

Refer to maclabel(7) for the MAC label format.

RETURN VALUES

The mac_from_text() function returns the value 0 if success

ful; otherwise
the value -1 is returned and the global variable errno is

set to indicate
the error.

COMPATIBILITY

POSIX.1e does not define a format for text representations

of MAC labels.

POSIX.1e requires that text strings allocated using

mac_to_text() be
freed using mac_free(3); in the FreeBSD implementation, they

must be
freed using free(3), as mac_free(3) is used only to free

memory used for
type mac_t.

ERRORS

[ENOMEM] Insufficient memory was available to al

locate internal

storage.

SEE ALSO

free(3), mac(3), mac_get(3), mac_is_present_np(3), mac_pre

pare(3),
mac_set(3), mac(4), 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
information.

HISTORY

Support for Mandatory Access Control was introduced in

FreeBSD 5.0 as
part of the TrustedBSD Project.

BSD December 21, 2001

BSD