| 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); |
| } |