2 .\" Copyright (c) 2000 Robert N. M. Watson
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
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14 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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16 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 .\" TrustedBSD Project - support for POSIX.1e process capabilities
35 .Nd Allocate and Initialize a Capability State in Working Storage
37 .Fd #include <sys/types.h>
38 .Fd #include <sys/capability.h>
44 shall create a capability state in working storage and return a pointer to
46 The initial value of all flags for all capabilities defined by the
47 implementation shall be cleared.
49 This function may cause memory to be allocated.
50 The caller should free any releasable memory, when the capability state in
51 working storage is no longer required, by calling
53 with the cap_t as an argument.
54 .Sh IMPLEMENTATION NOTES
55 FreeBSD's support for POSIX.1e interfaces and features is still under
56 development at this time.
58 Upon successful completion, the
60 function returns a non-NULL cap_t value.
65 shall be set to indicate the error.
67 If any of the following conditions occur, the
73 to the corresponding value:
76 The capability state to be returned requires more memory than is allowed by
77 the hardware or system-imposed memory management constraints.
84 POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion
85 of the draft continues on the cross-platform POSIX.1e implementation
86 mailing list. To join this list, see the
88 POSIX.1e implementation
89 page for more information.
91 Support for POSIX.1e Capabilities was developed as part of the TrustedBSD
93 POSIX.1e Capability support was introduced in
95 and development continues.