HardenedBSD/lib/libposix1e/cap_get_flag.c
Robert Watson ab024bb02e o Simplify capability types away from an array of ints to a single
u_int64_t flag field, bounding the number of capabilities at 64,
  but substantially cleaning up capability logic (there are currently
  43 defined capabilities).

o Heads up to anyone actually using capabilities: the constant
  assignments for various capabilities have been redone, so any
  persistent binary capability stores (i.e., '$posix1e.cap' EA
  backing files) must be recreated.  If you have one of these,
  you'll know about it, so if you have no idea what this means,
  don't worry.

o Update libposix1e to reflect this new definition, fixing the
  exposed functions that directly manipulate the flags fields.

Obtained from:	TrustedBSD Project
2000-10-13 17:12:58 +00:00

64 lines
1.9 KiB
C

/*-
* Copyright (c) 2000 Robert N. M. Watson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* TrustedBSD Project - support for POSIX.1e process capabilities
*/
#include <sys/types.h>
#include <sys/capability.h>
#include <sys/errno.h>
int
cap_get_flag(cap_t cap_p, cap_value_t cap, cap_flag_t flag,
cap_flag_value_t *value_p)
{
u_int64_t mask;
switch(flag) {
case CAP_EFFECTIVE:
mask = cap_p->c_effective;
break;
case CAP_INHERITABLE:
mask = cap_p->c_inheritable;
break;
case CAP_PERMITTED:
mask = cap_p->c_permitted;
break;
default:
return (EINVAL);
}
if (IS_CAP_SET(mask, cap))
*value_p = CAP_SET;
else
*value_p = CAP_CLEAR;
return (0);
}