WebSVN – HelenOS – Diff – /branches/tracing/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>
 
#include <udebug/udebug.h>
 
/** Print using kernel facility
 *
 
 * Print to kernel log.
 *
 */
static unative_t sys_klog(int fd, const void * buf, size_t count)
{
    size_t i;
    char *data;
    int rc;
 
    if (count > PAGE_SIZE)
        return ELIMIT;
 
 
 
 
   
    if (count > 0) {
        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);
 
    } else
 
 
        klog_update();
 
   
    return count;
}
 
/** Tell kernel to get keyboard/console access again */
static unative_t sys_debug_enable_console(void)
{
    arch_grab_console();
    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;
    istate_t fake_state;
 
    THREAD->udebug.uspace_state = &fake_state;
    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
 
    if (id < SYSCALL_END) {
        udebug_stoppable_begin();
        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();
 
    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
    udebug_stoppable_end();
    THREAD->udebug.uspace_state = NULL;
   
    return rc;
}
 
syshandler_t syscall_table[SYSCALL_END] = {
    (syshandler_t) sys_klog,
    (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,
   
    /* 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_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_enable_console,
 
    (syshandler_t) sys_ipc_connect_kbox
};
 
/** @}
 */
 

Rev 3018	Rev 3424
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	#include <console/klog.h>	-
55	#include <udebug/udebug.h>	54	#include <udebug/udebug.h>
56		55
57	/** Print using kernel facility	56	/** Print using kernel facility
58	*	57	*
59	* Some simulators can print only through kernel. Userspace can use	-
60	* this syscall to facilitate it.	58	* Print to kernel log.
-		59	*
61	*/	60	*/
62	static unative_t sys_io(int fd, const void * buf, size_t count)	61	static unative_t sys_klog(int fd, const void * buf, size_t count)
63	{	62	{
64	size_t i;	63	size_t i;
65	char *data;	64	char *data;
66	int rc;	65	int rc;
67		66
68	if (count > PAGE_SIZE)	67	if (count > PAGE_SIZE)
69	return ELIMIT;	68	return ELIMIT;
70		-
71	data = (char *) malloc(count, 0);	-
72	if (!data)	-
73	return ENOMEM;	-
74		69
-		70	if (count > 0) {
-		71	data = (char *) malloc(count, 0);
-		72	if (!data)
-		73	return ENOMEM;
-		74
75	rc = copy_from_uspace(data, buf, count);	75	rc = copy_from_uspace(data, buf, count);
76	if (rc) {	76	if (rc) {
-		77	free(data);
-		78	return rc;
-		79	}
-		80
-		81	for (i = 0; i < count; i++)
-		82	putchar(data[i]);
77	free(data);	83	free(data);
78	return rc;	-
79	}	84	} else
80		-
81	for (i = 0; i < count; i++)	-
82	putchar(data[i]);	85	klog_update();
83	free(data);	-
84		86
85	return count;	87	return count;
86	}	88	}
87		89
88	/** Tell kernel to get keyboard/console access again */	90	/** Tell kernel to get keyboard/console access again */
89	static unative_t sys_debug_enable_console(void)	91	static unative_t sys_debug_enable_console(void)
90	{	92	{
91	arch_grab_console();	93	arch_grab_console();
92	return 0;	94	return 0;
93	}	95	}
94		96
95	/** Dispatch system call */	97	/** Dispatch system call */
96	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	98	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
97	unative_t a4, unative_t a5, unative_t a6, unative_t id)	99	unative_t a4, unative_t a5, unative_t a6, unative_t id)
98	{	100	{
99	unative_t rc;	101	unative_t rc;
100	istate_t fake_state;	102	istate_t fake_state;
101		103
102	THREAD->udebug.uspace_state = &fake_state;	104	THREAD->udebug.uspace_state = &fake_state;
103	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);	105	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
104		106
105	if (id < SYSCALL_END) {	107	if (id < SYSCALL_END) {
106	udebug_stoppable_begin();	108	udebug_stoppable_begin();
107	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	109	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
108	} else {	110	} else {
109	klog_printf("TASK %llu: Unknown syscall id %llx", TASK->taskid,	111	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
110	id);	-
111	task_kill(TASK->taskid);	112	task_kill(TASK->taskid);
112	thread_exit();	113	thread_exit();
113	}	114	}
114		115
115	if (THREAD->interrupted)	116	if (THREAD->interrupted)
116	thread_exit();	117	thread_exit();
117		118
118	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);	119	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
119	udebug_stoppable_end();	120	udebug_stoppable_end();
120	THREAD->udebug.uspace_state = NULL;	121	THREAD->udebug.uspace_state = NULL;
121		122
122	return rc;	123	return rc;
123	}	124	}
124		125
125	syshandler_t syscall_table[SYSCALL_END] = {	126	syshandler_t syscall_table[SYSCALL_END] = {
126	(syshandler_t) sys_io,	127	(syshandler_t) sys_klog,
127	(syshandler_t) sys_tls_set,	128	(syshandler_t) sys_tls_set,
128		129
129	/* Thread and task related syscalls. */	130	/* Thread and task related syscalls. */
130	(syshandler_t) sys_thread_create,	131	(syshandler_t) sys_thread_create,
131	(syshandler_t) sys_thread_exit,	132	(syshandler_t) sys_thread_exit,
132	(syshandler_t) sys_thread_get_id,	133	(syshandler_t) sys_thread_get_id,
-		134
133	(syshandler_t) sys_task_get_id,	135	(syshandler_t) sys_task_get_id,
-		136	(syshandler_t) sys_task_spawn,
134		137
135	/* Synchronization related syscalls. */	138	/* Synchronization related syscalls. */
136	(syshandler_t) sys_futex_sleep_timeout,	139	(syshandler_t) sys_futex_sleep_timeout,
137	(syshandler_t) sys_futex_wakeup,	140	(syshandler_t) sys_futex_wakeup,
138		141
139	/* Address space related syscalls. */	142	/* Address space related syscalls. */
140	(syshandler_t) sys_as_area_create,	143	(syshandler_t) sys_as_area_create,
141	(syshandler_t) sys_as_area_resize,	144	(syshandler_t) sys_as_area_resize,
142	(syshandler_t) sys_as_area_destroy,	145	(syshandler_t) sys_as_area_destroy,
143		146
144	/* IPC related syscalls. */	147	/* IPC related syscalls. */
145	(syshandler_t) sys_ipc_call_sync_fast,	148	(syshandler_t) sys_ipc_call_sync_fast,
146	(syshandler_t) sys_ipc_call_sync_slow,	149	(syshandler_t) sys_ipc_call_sync_slow,
147	(syshandler_t) sys_ipc_call_async_fast,	150	(syshandler_t) sys_ipc_call_async_fast,
148	(syshandler_t) sys_ipc_call_async_slow,	151	(syshandler_t) sys_ipc_call_async_slow,
149	(syshandler_t) sys_ipc_answer_fast,	152	(syshandler_t) sys_ipc_answer_fast,
150	(syshandler_t) sys_ipc_answer_slow,	153	(syshandler_t) sys_ipc_answer_slow,
151	(syshandler_t) sys_ipc_forward_fast,	154	(syshandler_t) sys_ipc_forward_fast,
152	(syshandler_t) sys_ipc_wait_for_call,	155	(syshandler_t) sys_ipc_wait_for_call,
153	(syshandler_t) sys_ipc_hangup,	156	(syshandler_t) sys_ipc_hangup,
154	(syshandler_t) sys_ipc_register_irq,	157	(syshandler_t) sys_ipc_register_irq,
155	(syshandler_t) sys_ipc_unregister_irq,	158	(syshandler_t) sys_ipc_unregister_irq,
156		159
157	/* Capabilities related syscalls. */	160	/* Capabilities related syscalls. */
158	(syshandler_t) sys_cap_grant,	161	(syshandler_t) sys_cap_grant,
159	(syshandler_t) sys_cap_revoke,	162	(syshandler_t) sys_cap_revoke,
160		163
161	/* DDI related syscalls. */	164	/* DDI related syscalls. */
162	(syshandler_t) sys_physmem_map,	165	(syshandler_t) sys_physmem_map,
163	(syshandler_t) sys_iospace_enable,	166	(syshandler_t) sys_iospace_enable,
164	(syshandler_t) sys_preempt_control,	167	(syshandler_t) sys_preempt_control,
165		168
166	/* Sysinfo syscalls */	169	/* Sysinfo syscalls */
167	(syshandler_t) sys_sysinfo_valid,	170	(syshandler_t) sys_sysinfo_valid,
168	(syshandler_t) sys_sysinfo_value,	171	(syshandler_t) sys_sysinfo_value,
169		172
170	/* Debug calls */	173	/* Debug calls */
171	(syshandler_t) sys_debug_enable_console,	174	(syshandler_t) sys_debug_enable_console,
172		175
173	(syshandler_t) sys_ipc_connect_kbox	176	(syshandler_t) sys_ipc_connect_kbox
174	};	177	};
175		178
176	/** @}	179	/** @}
177	*/	180	*/
178		181

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(root)/branches/tracing/kernel/generic/src/syscall/syscall.c @ 2918 – Rev 3018 → 3424