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Manual Pages  — MAC_TEXT

NAME

mac_from_text, mac_to_text – convert MAC label to/from text representation

CONTENTS

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 representation 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_textand mac_to_text functions return the value 0 if successful; 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 allocate internal storage.

SEE ALSO

free(3), mac(3), mac_get(3), mac_is_present(3), mac_prepare(3), mac_set(3), posix1e(3), mac(4), 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.
MAC_TEXT (3) September 21, 2023
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