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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file cap.c |
33 | * @file cap.c |
34 | * @brief Functions to grant/revoke capabilities to/from a task. |
34 | * @brief Functions to grant/revoke capabilities to/from a task. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <cap.h> |
37 | #include <cap.h> |
38 | #include <task.h> |
38 | #include <task.h> |
39 | #include <libc.h> |
39 | #include <libc.h> |
40 | #include <kernel/syscall/sysarg64.h> |
40 | #include <kernel/syscall/sysarg64.h> |
41 | 41 | ||
42 | /** Grant capabilities to a task. |
42 | /** Grant capabilities to a task. |
43 | * |
43 | * |
44 | * @param id Destination task ID. |
44 | * @param id Destination task ID. |
45 | * @param caps Capabilities to grant. |
45 | * @param caps Capabilities to grant. |
46 | * |
46 | * |
47 | * @return Zero on success or a value from @ref errno.h on failure. |
47 | * @return Zero on success or a value from @ref errno.h on failure. |
48 | */ |
48 | */ |
49 | int cap_grant(task_id_t id, unsigned int caps) |
49 | int cap_grant(task_id_t id, unsigned int caps) |
50 | { |
50 | { |
51 | sysarg64_t arg; |
51 | sysarg64_t arg; |
52 | 52 | ||
53 | arg.value = (unsigned long long) id; |
53 | arg.value = (unsigned long long) id; |
54 | 54 | ||
55 | return __SYSCALL2(SYS_CAP_GRANT, (sysarg_t) &arg, (sysarg_t) caps); |
55 | return __SYSCALL2(SYS_CAP_GRANT, (sysarg_t) &arg, (sysarg_t) caps); |
56 | } |
56 | } |
57 | 57 | ||
58 | /** Revoke capabilities from a task. |
58 | /** Revoke capabilities from a task. |
59 | * |
59 | * |
60 | * @param id Destination task ID. |
60 | * @param id Destination task ID. |
61 | * @param caps Capabilities to revoke. |
61 | * @param caps Capabilities to revoke. |
62 | * |
62 | * |
63 | * @return Zero on success or a value from @ref errno.h on failure. |
63 | * @return Zero on success or a value from @ref errno.h on failure. |
64 | */ |
64 | */ |
65 | int cap_revoke(task_id_t id, unsigned int caps) |
65 | int cap_revoke(task_id_t id, unsigned int caps) |
66 | { |
66 | { |
67 | sysarg64_t arg; |
67 | sysarg64_t arg; |
68 | 68 | ||
69 | arg.value = (unsigned long long) id; |
69 | arg.value = (unsigned long long) id; |
70 | 70 | ||
71 | return __SYSCALL2(SYS_CAP_REVOKE, (sysarg_t) &arg, (sysarg_t) caps); |
71 | return __SYSCALL2(SYS_CAP_REVOKE, (sysarg_t) &arg, (sysarg_t) caps); |
72 | } |
72 | } |
73 | 73 | ||
74 | /** @} |
74 | /** @} |
75 | */ |
75 | */ |
76 | 76 |