0,0 → 1,69 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - 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. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. |
*/ |
|
/** |
* @file cap.c |
* @brief Functions to grant/revoke capabilities to/from a task. |
*/ |
|
#include <cap.h> |
#include <task.h> |
#include <libc.h> |
#include <kernel/syscall/sysarg64.h> |
|
/** Grant capabilities to a task. |
* |
* @param id Destination task ID. |
* @param caps Capabilities to grant. |
* |
* @return Zero on success or a value from @ref errno.h on failure. |
*/ |
int cap_grant(task_id_t id, unsigned int caps) |
{ |
sysarg64_t arg; |
|
arg.value = (unsigned long long) id; |
|
__SYSCALL2(SYS_CAP_GRANT, (sysarg_t) &arg, (sysarg_t) caps); |
} |
|
/** Revoke capabilities from a task. |
* |
* @param id Destination task ID. |
* @param caps Capabilities to revoke. |
* |
* @return Zero on success or a value from @ref errno.h on failure. |
*/ |
int cap_revoke(task_id_t id, unsigned int caps) |
{ |
sysarg64_t arg; |
|
arg.value = (unsigned long long) id; |
|
__SYSCALL2(SYS_CAP_REVOKE, (sysarg_t) &arg, (sysarg_t) caps); |
} |