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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
2 | * Copyright (C) 2005 Martin Decky |
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 | /** |
29 | /** |
30 | * @file syscall.c |
30 | * @file syscall.c |
31 | * @brief Syscall table and syscall wrappers. |
31 | * @brief Syscall table and syscall wrappers. |
32 | */ |
32 | */ |
33 | 33 | ||
34 | #include <syscall/syscall.h> |
34 | #include <syscall/syscall.h> |
35 | #include <proc/thread.h> |
35 | #include <proc/thread.h> |
36 | #include <proc/task.h> |
36 | #include <proc/task.h> |
37 | #include <mm/as.h> |
37 | #include <mm/as.h> |
38 | #include <print.h> |
38 | #include <print.h> |
39 | #include <putchar.h> |
39 | #include <putchar.h> |
40 | #include <errno.h> |
40 | #include <errno.h> |
41 | #include <arch.h> |
41 | #include <arch.h> |
42 | #include <debug.h> |
42 | #include <debug.h> |
43 | #include <ipc/sysipc.h> |
43 | #include <ipc/sysipc.h> |
44 | #include <synch/futex.h> |
44 | #include <synch/futex.h> |
45 | #include <ddi/ddi.h> |
45 | #include <ddi/ddi.h> |
- | 46 | #include <security/cap.h> |
|
46 | #include <syscall/copy.h> |
47 | #include <syscall/copy.h> |
47 | 48 | ||
48 | static __native sys_io(int fd, const void * buf, size_t count) { |
49 | static __native sys_io(int fd, const void * buf, size_t count) { |
49 | 50 | ||
50 | // TODO: buf sanity checks and a lot of other stuff ... |
51 | // TODO: buf sanity checks and a lot of other stuff ... |
51 | 52 | ||
52 | size_t i; |
53 | size_t i; |
53 | 54 | ||
54 | for (i = 0; i < count; i++) |
55 | for (i = 0; i < count; i++) |
55 | putchar(((char *) buf)[i]); |
56 | putchar(((char *) buf)[i]); |
56 | 57 | ||
57 | return count; |
58 | return count; |
58 | } |
59 | } |
59 | 60 | ||
60 | static __native sys_preempt_control(int enable) |
- | |
61 | { |
- | |
62 | if (! cap_get(TASK) & CAP_PREEMPT_CONTROL) |
- | |
63 | return EPERM; |
- | |
64 | if (enable) |
- | |
65 | preemption_enable(); |
- | |
66 | else |
- | |
67 | preemption_disable(); |
- | |
68 | return 0; |
- | |
69 | } |
- | |
70 | - | ||
71 | /** Dispatch system call */ |
61 | /** Dispatch system call */ |
72 | __native syscall_handler(__native a1, __native a2, __native a3, |
62 | __native syscall_handler(__native a1, __native a2, __native a3, |
73 | __native a4, __native id) |
63 | __native a4, __native id) |
74 | { |
64 | { |
75 | if (id < SYSCALL_END) |
65 | if (id < SYSCALL_END) |
76 | return syscall_table[id](a1,a2,a3,a4); |
66 | return syscall_table[id](a1,a2,a3,a4); |
77 | else |
67 | else |
78 | panic("Undefined syscall %d", id); |
68 | panic("Undefined syscall %d", id); |
79 | } |
69 | } |
80 | 70 | ||
81 | syshandler_t syscall_table[SYSCALL_END] = { |
71 | syshandler_t syscall_table[SYSCALL_END] = { |
82 | sys_io, |
72 | sys_io, |
83 | sys_tls_set, |
73 | sys_tls_set, |
84 | sys_preempt_control, |
- | |
85 | 74 | ||
86 | /* Thread and task related syscalls. */ |
75 | /* Thread and task related syscalls. */ |
87 | sys_thread_create, |
76 | sys_thread_create, |
88 | sys_thread_exit, |
77 | sys_thread_exit, |
89 | sys_task_get_id, |
78 | sys_task_get_id, |
90 | 79 | ||
91 | /* Synchronization related syscalls. */ |
80 | /* Synchronization related syscalls. */ |
92 | sys_futex_sleep_timeout, |
81 | sys_futex_sleep_timeout, |
93 | sys_futex_wakeup, |
82 | sys_futex_wakeup, |
94 | 83 | ||
95 | /* Address space related syscalls. */ |
84 | /* Address space related syscalls. */ |
96 | sys_as_area_create, |
85 | sys_as_area_create, |
97 | sys_as_area_resize, |
86 | sys_as_area_resize, |
98 | sys_as_area_accept, |
87 | sys_as_area_accept, |
99 | sys_as_area_send, |
88 | sys_as_area_send, |
100 | 89 | ||
101 | /* IPC related syscalls. */ |
90 | /* IPC related syscalls. */ |
102 | sys_ipc_call_sync_fast, |
91 | sys_ipc_call_sync_fast, |
103 | sys_ipc_call_sync, |
92 | sys_ipc_call_sync, |
104 | sys_ipc_call_async_fast, |
93 | sys_ipc_call_async_fast, |
105 | sys_ipc_call_async, |
94 | sys_ipc_call_async, |
106 | sys_ipc_answer_fast, |
95 | sys_ipc_answer_fast, |
107 | sys_ipc_answer, |
96 | sys_ipc_answer, |
108 | sys_ipc_forward_fast, |
97 | sys_ipc_forward_fast, |
109 | sys_ipc_wait_for_call, |
98 | sys_ipc_wait_for_call, |
110 | sys_ipc_hangup, |
99 | sys_ipc_hangup, |
111 | sys_ipc_register_irq, |
100 | sys_ipc_register_irq, |
112 | sys_ipc_unregister_irq, |
101 | sys_ipc_unregister_irq, |
113 | 102 | ||
- | 103 | /* Capabilities related syscalls. */ |
|
- | 104 | sys_cap_grant, |
|
- | 105 | sys_cap_revoke, |
|
- | 106 | ||
114 | /* DDI related syscalls. */ |
107 | /* DDI related syscalls. */ |
115 | sys_physmem_map, |
108 | sys_physmem_map, |
116 | sys_iospace_enable |
109 | sys_iospace_enable, |
- | 110 | sys_preempt_control |
|
117 | }; |
111 | }; |
118 | 112 |