Remove hard sentence breaks.
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.In sys/mac.h
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.Sh DESCRIPTION
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The IEEE POSIX.1e specification never left draft form, but the interfaces
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it describes are now widely used despite inherent limitations. Currently,
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only a few of the interfaces and features are implemented in
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it describes are now widely used despite inherent limitations.
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Currently, only a few of the interfaces and features are implemented in
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.Fx ,
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although efforts are underway to complete the integration at this time.
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.Pp
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POSIX.1e describes five security extensions to the base POSIX.1 API:
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Access Control Lists (ACLs), Auditing, Capabilities, Mandatory Access
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Control, and Information Flow Labels. Of these, the ACL interfaces are
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Control, and Information Flow Labels.
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Of these, the ACL interfaces are
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currently included with
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.Fx ,
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Auditing, Capabilities, and Mandatory
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@ -57,7 +58,8 @@ the calendar.
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.Pp
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POSIX.1e defines both syntax and semantics for these features, but fairly
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substantial changes are required to implement these features in the
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operating system. As shipped,
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operating system.
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As shipped,
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.Fx 4.0
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permits file systems to export
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Access Control Lists via the VFS, and provides a library for userland
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@ -69,7 +71,8 @@ Available API calls relating to ACLs are described in detail in
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.Fx
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currently provides documentation and APIs for fine-grained capability
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support, but implementation is currently not included in the base
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system. Documentation of these API calls is provided in
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system.
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Documentation of these API calls is provided in
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.Xr cap 3 .
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.Pp
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Additional patches supporting POSIX.1e features are provided by the
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@ -82,10 +85,13 @@ support for POSIX.1e interfaces and features is still under
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development at this time.
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.Sh ENVIRONMENT
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POSIX.1e assigns security labels to all objects, extending the security
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functionality described in POSIX.1. These additional labels provide
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functionality described in POSIX.1.
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These additional labels provide
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fine-grained discretionary access control, fine-grained capabilities,
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and labels necessary for mandatory access control. POSIX.2c describes
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a set of userland utilities for manipulating these labels. These userland
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and labels necessary for mandatory access control.
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POSIX.2c describes
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a set of userland utilities for manipulating these labels.
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These userland
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utilities are not bundled with
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.Fx 4.0
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so as to discourage their
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@ -100,9 +106,11 @@ use in the short term.
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.Xr extattr 9 ,
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.Xr mac 9
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.Sh STANDARDS
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POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion
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of the draft continues on the cross-platform POSIX.1e implementation
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mailing list. To join this list, see the
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POSIX.1e is described in IEEE POSIX.1e draft 17.
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Discussion of the draft continues
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on the cross-platform POSIX.1e implementation
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mailing list.
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To join this list, see the
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.Fx
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POSIX.1e implementation
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page for more information.
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