POSIX1E(3) | Library Functions Manual | POSIX1E(3)

# NAME

`posix1e` — introduction to the POSIX.1e security API

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

`#include <sys/types.h>`
`#include <sys/acl.h>`

# DESCRIPTION

POSIX.1e describes five security extensions to the POSIX.1 API: Access Control Lists (ACLs), Auditing, Capabilities, Mandatory Access Control, and Information Flow Labels. While IEEE POSIX.1e D17 specification has not been standardized, several of its interfaces are widely used.

NetBSD implements POSIX.1e interface for access control lists, described in acl(3), and supports ACLs on the ffs(7) file system; ACLs must be administratively enabled using tunefs(8) or via mount(8) options.

NetBSD does not implement the POSIX.1e mac, audit, privilege (capability), or information flow label APIs.

# ENVIRONMENT

POSIX.1e assigns security attributes to all objects, extending the security functionality described in POSIX.1. These additional attributes store fine-grained discretionary access control information; for files, they are stored in extended attributes, described in extattr(3).

POSIX.2c describes a set of userland utilities for manipulating these attributes, including getfacl(1) and setfacl(1).

# SEE ALSO

getfacl(1), setfacl(1), acl(3), extattr(3), ffs(7), tunefs(8), acl(9), extattr(9)

# STANDARDS

POSIX.1e is described in IEEE POSIX.1e draft 17.

# HISTORY

POSIX.1e support was introduced in NetBSD 10.0.

# AUTHORS

Robert N M Watson
Chris D. Faulhaber
Thomas Moestl
Ilmar S Habibulin

February 25, 2016 | NetBSD 11.0