WebSVN – HelenOS – Diff – /branches/dynload/kernel/generic/src/syscall/syscall.c


/*
 * Copyright (c) 2005 Martin Decky
 * 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.
 */
 
/** @addtogroup generic
 * @{
 */
 
/**
 * @file
 * @brief   Syscall table and syscall wrappers.
 */
 
#include <syscall/syscall.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <mm/as.h>
#include <print.h>
#include <putchar.h>
#include <errno.h>
#include <arch.h>
#include <debug.h>
#include <ipc/sysipc.h>
#include <synch/futex.h>
#include <ddi/ddi.h>
#include <security/cap.h>
#include <syscall/copy.h>
#include <sysinfo/sysinfo.h>
#include <console/console.h>
 
/** Print using kernel facility
 *
 * Print to kernel log.
 *
 */
static unative_t sys_io(int fd, const void * buf, size_t count)
{
    size_t i;
    char *data;
    int rc;
 
    if (count > PAGE_SIZE)
        return ELIMIT;
 
    data = (char *) malloc(count, 0);
    if (!data)
        return ENOMEM;
   
    rc = copy_from_uspace(data, buf, count);
    if (rc) {
        free(data);
        return rc;
    }
 
    for (i = 0; i < count; i++)
        putchar(data[i]);
    free(data);
   
    return count;
}
 
/** Tell kernel to get keyboard/console access again */
static unative_t sys_debug_enable_console(void)
{
    arch_grab_console();
    return 0;
}
 
/** Print a hex integer into klog */
static unative_t sys_debug_putint(unative_t i)
{
    printf("[task:0x%x]", i);
    return 0;
}
 
/** Dispatch system call */
unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
    unative_t a4, unative_t a5, unative_t a6, unative_t id)
{
    unative_t rc;
 
    if (id < SYSCALL_END)
        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
    else {
        printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
        task_kill(TASK->taskid);
        thread_exit();
    }
       
    if (THREAD->interrupted)
        thread_exit();
   
    return rc;
}
 
syshandler_t syscall_table[SYSCALL_END] = {
    (syshandler_t) sys_io,
    (syshandler_t) sys_tls_set,
   
    /* Thread and task related syscalls. */
    (syshandler_t) sys_thread_create,
    (syshandler_t) sys_thread_exit,
    (syshandler_t) sys_thread_get_id,
   
    (syshandler_t) sys_task_get_id,
    (syshandler_t) sys_task_spawn,
    (syshandler_t) sys_task_spawn_loader,
   
    /* Synchronization related syscalls. */
    (syshandler_t) sys_futex_sleep_timeout,
    (syshandler_t) sys_futex_wakeup,
   
    /* Address space related syscalls. */
    (syshandler_t) sys_as_area_create,
    (syshandler_t) sys_as_area_resize,
    (syshandler_t) sys_as_area_change_flags,
    (syshandler_t) sys_as_area_destroy,
   
    /* IPC related syscalls. */
    (syshandler_t) sys_ipc_call_sync_fast,
    (syshandler_t) sys_ipc_call_sync_slow,
    (syshandler_t) sys_ipc_call_async_fast,
    (syshandler_t) sys_ipc_call_async_slow,
    (syshandler_t) sys_ipc_answer_fast,
    (syshandler_t) sys_ipc_answer_slow,
    (syshandler_t) sys_ipc_forward_fast,
    (syshandler_t) sys_ipc_wait_for_call,
    (syshandler_t) sys_ipc_hangup,
    (syshandler_t) sys_ipc_register_irq,
    (syshandler_t) sys_ipc_unregister_irq,
   
    /* Capabilities related syscalls. */
    (syshandler_t) sys_cap_grant,
    (syshandler_t) sys_cap_revoke,
   
    /* DDI related syscalls. */
    (syshandler_t) sys_physmem_map,
    (syshandler_t) sys_iospace_enable,
    (syshandler_t) sys_preempt_control,
   
    /* Sysinfo syscalls */
    (syshandler_t) sys_sysinfo_valid,
    (syshandler_t) sys_sysinfo_value,
   
    /* Debug calls */
    (syshandler_t) sys_debug_putint,
    (syshandler_t) sys_debug_enable_console
};
 
/** @}
 */
 

Rev 3149	Rev 3150
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	/** @addtogroup generic	29	/** @addtogroup generic
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Syscall table and syscall wrappers.	35	* @brief Syscall table and syscall wrappers.
36	*/	36	*/
37		37
38	#include <syscall/syscall.h>	38	#include <syscall/syscall.h>
39	#include <proc/thread.h>	39	#include <proc/thread.h>
40	#include <proc/task.h>	40	#include <proc/task.h>
41	#include <mm/as.h>	41	#include <mm/as.h>
42	#include <print.h>	42	#include <print.h>
43	#include <putchar.h>	43	#include <putchar.h>
44	#include <errno.h>	44	#include <errno.h>
45	#include <arch.h>	45	#include <arch.h>
46	#include <debug.h>	46	#include <debug.h>
47	#include <ipc/sysipc.h>	47	#include <ipc/sysipc.h>
48	#include <synch/futex.h>	48	#include <synch/futex.h>
49	#include <ddi/ddi.h>	49	#include <ddi/ddi.h>
50	#include <security/cap.h>	50	#include <security/cap.h>
51	#include <syscall/copy.h>	51	#include <syscall/copy.h>
52	#include <sysinfo/sysinfo.h>	52	#include <sysinfo/sysinfo.h>
53	#include <console/console.h>	53	#include <console/console.h>
54		54
55	/** Print using kernel facility	55	/** Print using kernel facility
56	*	56	*
57	* Print to kernel log.	57	* Print to kernel log.
58	*	58	*
59	*/	59	*/
60	static unative_t sys_io(int fd, const void * buf, size_t count)	60	static unative_t sys_io(int fd, const void * buf, size_t count)
61	{	61	{
62	size_t i;	62	size_t i;
63	char *data;	63	char *data;
64	int rc;	64	int rc;
65		65
66	if (count > PAGE_SIZE)	66	if (count > PAGE_SIZE)
67	return ELIMIT;	67	return ELIMIT;
68		68
69	data = (char *) malloc(count, 0);	69	data = (char *) malloc(count, 0);
70	if (!data)	70	if (!data)
71	return ENOMEM;	71	return ENOMEM;
72		72
73	rc = copy_from_uspace(data, buf, count);	73	rc = copy_from_uspace(data, buf, count);
74	if (rc) {	74	if (rc) {
75	free(data);	75	free(data);
76	return rc;	76	return rc;
77	}	77	}
78		78
79	for (i = 0; i < count; i++)	79	for (i = 0; i < count; i++)
80	putchar(data[i]);	80	putchar(data[i]);
81	free(data);	81	free(data);
82		82
83	return count;	83	return count;
84	}	84	}
85		85
86	/** Tell kernel to get keyboard/console access again */	86	/** Tell kernel to get keyboard/console access again */
87	static unative_t sys_debug_enable_console(void)	87	static unative_t sys_debug_enable_console(void)
88	{	88	{
89	arch_grab_console();	89	arch_grab_console();
90	return 0;	90	return 0;
91	}	91	}
92		92
93	/** Print a hex integer into klog */	93	/** Print a hex integer into klog */
94	static unative_t sys_debug_putint(unative_t i)	94	static unative_t sys_debug_putint(unative_t i)
95	{	95	{
96	klog_printf("[task:0x%x]", i);	96	printf("[task:0x%x]", i);
97	return 0;	97	return 0;
98	}	98	}
99		99
100	/** Dispatch system call */	100	/** Dispatch system call */
101	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	101	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
102	unative_t a4, unative_t a5, unative_t a6, unative_t id)	102	unative_t a4, unative_t a5, unative_t a6, unative_t id)
103	{	103	{
104	unative_t rc;	104	unative_t rc;
105		105
106	if (id < SYSCALL_END)	106	if (id < SYSCALL_END)
107	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	107	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
108	else {	108	else {
109	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	109	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
110	task_kill(TASK->taskid);	110	task_kill(TASK->taskid);
111	thread_exit();	111	thread_exit();
112	}	112	}
113		113
114	if (THREAD->interrupted)	114	if (THREAD->interrupted)
115	thread_exit();	115	thread_exit();
116		116
117	return rc;	117	return rc;
118	}	118	}
119		119
120	syshandler_t syscall_table[SYSCALL_END] = {	120	syshandler_t syscall_table[SYSCALL_END] = {
121	(syshandler_t) sys_io,	121	(syshandler_t) sys_io,
122	(syshandler_t) sys_tls_set,	122	(syshandler_t) sys_tls_set,
123		123
124	/* Thread and task related syscalls. */	124	/* Thread and task related syscalls. */
125	(syshandler_t) sys_thread_create,	125	(syshandler_t) sys_thread_create,
126	(syshandler_t) sys_thread_exit,	126	(syshandler_t) sys_thread_exit,
127	(syshandler_t) sys_thread_get_id,	127	(syshandler_t) sys_thread_get_id,
128		128
129	(syshandler_t) sys_task_get_id,	129	(syshandler_t) sys_task_get_id,
130	(syshandler_t) sys_task_spawn,	130	(syshandler_t) sys_task_spawn,
131	(syshandler_t) sys_task_spawn_loader,	131	(syshandler_t) sys_task_spawn_loader,
132		132
133	/* Synchronization related syscalls. */	133	/* Synchronization related syscalls. */
134	(syshandler_t) sys_futex_sleep_timeout,	134	(syshandler_t) sys_futex_sleep_timeout,
135	(syshandler_t) sys_futex_wakeup,	135	(syshandler_t) sys_futex_wakeup,
136		136
137	/* Address space related syscalls. */	137	/* Address space related syscalls. */
138	(syshandler_t) sys_as_area_create,	138	(syshandler_t) sys_as_area_create,
139	(syshandler_t) sys_as_area_resize,	139	(syshandler_t) sys_as_area_resize,
140	(syshandler_t) sys_as_area_change_flags,	140	(syshandler_t) sys_as_area_change_flags,
141	(syshandler_t) sys_as_area_destroy,	141	(syshandler_t) sys_as_area_destroy,
142		142
143	/* IPC related syscalls. */	143	/* IPC related syscalls. */
144	(syshandler_t) sys_ipc_call_sync_fast,	144	(syshandler_t) sys_ipc_call_sync_fast,
145	(syshandler_t) sys_ipc_call_sync_slow,	145	(syshandler_t) sys_ipc_call_sync_slow,
146	(syshandler_t) sys_ipc_call_async_fast,	146	(syshandler_t) sys_ipc_call_async_fast,
147	(syshandler_t) sys_ipc_call_async_slow,	147	(syshandler_t) sys_ipc_call_async_slow,
148	(syshandler_t) sys_ipc_answer_fast,	148	(syshandler_t) sys_ipc_answer_fast,
149	(syshandler_t) sys_ipc_answer_slow,	149	(syshandler_t) sys_ipc_answer_slow,
150	(syshandler_t) sys_ipc_forward_fast,	150	(syshandler_t) sys_ipc_forward_fast,
151	(syshandler_t) sys_ipc_wait_for_call,	151	(syshandler_t) sys_ipc_wait_for_call,
152	(syshandler_t) sys_ipc_hangup,	152	(syshandler_t) sys_ipc_hangup,
153	(syshandler_t) sys_ipc_register_irq,	153	(syshandler_t) sys_ipc_register_irq,
154	(syshandler_t) sys_ipc_unregister_irq,	154	(syshandler_t) sys_ipc_unregister_irq,
155		155
156	/* Capabilities related syscalls. */	156	/* Capabilities related syscalls. */
157	(syshandler_t) sys_cap_grant,	157	(syshandler_t) sys_cap_grant,
158	(syshandler_t) sys_cap_revoke,	158	(syshandler_t) sys_cap_revoke,
159		159
160	/* DDI related syscalls. */	160	/* DDI related syscalls. */
161	(syshandler_t) sys_physmem_map,	161	(syshandler_t) sys_physmem_map,
162	(syshandler_t) sys_iospace_enable,	162	(syshandler_t) sys_iospace_enable,
163	(syshandler_t) sys_preempt_control,	163	(syshandler_t) sys_preempt_control,
164		164
165	/* Sysinfo syscalls */	165	/* Sysinfo syscalls */
166	(syshandler_t) sys_sysinfo_valid,	166	(syshandler_t) sys_sysinfo_valid,
167	(syshandler_t) sys_sysinfo_value,	167	(syshandler_t) sys_sysinfo_value,
168		168
169	/* Debug calls */	169	/* Debug calls */
170	(syshandler_t) sys_debug_putint,	170	(syshandler_t) sys_debug_putint,
171	(syshandler_t) sys_debug_enable_console	171	(syshandler_t) sys_debug_enable_console
172	};	172	};
173		173
174	/** @}	174	/** @}
175	*/	175	*/
176		176

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c – Rev 3149 → 3150