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Man Pages
MAC_TEXT(3) FreeBSD Library Functions Manual MAC_TEXT(3)

mac_from_text, mac_to_text
convert MAC label to/from text representation

Standard C Library (libc, -lc)

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

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.

The mac_from_text() and 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.

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.

[]
Insufficient memory was available to allocate internal storage.

free(3), mac(3), mac_get(3), mac_is_present(3), mac_prepare(3), mac_set(3), posix1e(3), mac(4), maclabel(7)

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.

Support for Mandatory Access Control was introduced in FreeBSD 5.0 as part of the TrustedBSD Project.
December 21, 2001 FreeBSD 12.0-RELEASE

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