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 <proc/program.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 <synch/smc.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)
{
 
    char *data;
    int rc;
 
    if (count > PAGE_SIZE)
        return ELIMIT;
   
    if (count > 0) {
        data = (char *) malloc(count + 1, 0);
        if (!data)
            return ENOMEM;
       
        rc = copy_from_uspace(data, buf, count);
        if (rc) {
            free(data);
            return rc;
        }
        data[count] = 0;
       
 
        printf("%s", data);
        free(data);
    } else
        klog_update();
   
    return count;
}
 
/** Tell kernel to get keyboard/console access again */
static unative_t sys_debug_enable_console(void)
{
#ifdef CONFIG_KCONSOLE
    grab_console();
    return true;
#else
    return false;
#endif
}
 
/** Print a hex integer into klog */
static unative_t sys_debug_putint(unative_t i)
{
    printf("[task:0x%x]", i);
    return 0;
}
 
/** Tell kernel to relinquish keyboard/console access */
static unative_t sys_debug_disable_console(void)
{
    release_console();
    return true;
}
 
/** 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;
 
#ifdef CONFIG_UDEBUG
    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
#endif
    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();
 
#ifdef CONFIG_UDEBUG
    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
 
    /*
     * Stopping point needed for tasks that only invoke non-blocking
     * system calls.
     */
    udebug_stoppable_begin();
    udebug_stoppable_end();
#endif  
    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_program_spawn_loader,
   
    /* Synchronization related syscalls. */
    (syshandler_t) sys_futex_sleep_timeout,
    (syshandler_t) sys_futex_wakeup,
    (syshandler_t) sys_smc_coherence,
   
    /* 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_forward_slow,
    (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,
    (syshandler_t) sys_debug_disable_console,
   
    (syshandler_t) sys_ipc_connect_kbox
};
 
/** @}
 */
 

Rev 4337	Rev 4341
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 <proc/program.h>	41	#include <proc/program.h>
42	#include <mm/as.h>	42	#include <mm/as.h>
43	#include <print.h>	43	#include <print.h>
44	#include <putchar.h>	44	#include <putchar.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <arch.h>	46	#include <arch.h>
47	#include <debug.h>	47	#include <debug.h>
48	#include <ipc/sysipc.h>	48	#include <ipc/sysipc.h>
49	#include <synch/futex.h>	49	#include <synch/futex.h>
50	#include <synch/smc.h>	50	#include <synch/smc.h>
51	#include <ddi/ddi.h>	51	#include <ddi/ddi.h>
52	#include <security/cap.h>	52	#include <security/cap.h>
53	#include <syscall/copy.h>	53	#include <syscall/copy.h>
54	#include <sysinfo/sysinfo.h>	54	#include <sysinfo/sysinfo.h>
55	#include <console/console.h>	55	#include <console/console.h>
56	#include <udebug/udebug.h>	56	#include <udebug/udebug.h>
57		57
58	/** Print using kernel facility	58	/** Print using kernel facility
59	*	59	*
60	* Print to kernel log.	60	* Print to kernel log.
61	*	61	*
62	*/	62	*/
63	static unative_t sys_klog(int fd, const void * buf, size_t count)	63	static unative_t sys_klog(int fd, const void * buf, size_t count)
64	{	64	{
65	size_t i;	-
66	char *data;	65	char *data;
67	int rc;	66	int rc;
68		67
69	if (count > PAGE_SIZE)	68	if (count > PAGE_SIZE)
70	return ELIMIT;	69	return ELIMIT;
71		70
72	if (count > 0) {	71	if (count > 0) {
73	data = (char *) malloc(count, 0);	72	data = (char *) malloc(count + 1, 0);
74	if (!data)	73	if (!data)
75	return ENOMEM;	74	return ENOMEM;
76		75
77	rc = copy_from_uspace(data, buf, count);	76	rc = copy_from_uspace(data, buf, count);
78	if (rc) {	77	if (rc) {
79	free(data);	78	free(data);
80	return rc;	79	return rc;
81	}	80	}
-		81	data[count] = 0;
82		82
83	for (i = 0; i < count; i++)	-
84	putchar(data[i]);	83	printf("%s", data);
85	free(data);	84	free(data);
86	} else	85	} else
87	klog_update();	86	klog_update();
88		87
89	return count;	88	return count;
90	}	89	}
91		90
92	/** Tell kernel to get keyboard/console access again */	91	/** Tell kernel to get keyboard/console access again */
93	static unative_t sys_debug_enable_console(void)	92	static unative_t sys_debug_enable_console(void)
94	{	93	{
95	#ifdef CONFIG_KCONSOLE	94	#ifdef CONFIG_KCONSOLE
96	arch_grab_console();	95	grab_console();
97	return true;	96	return true;
98	#else	97	#else
99	return false;	98	return false;
100	#endif	99	#endif
101	}	100	}
102		101
103	/** Print a hex integer into klog */	102	/** Print a hex integer into klog */
104	static unative_t sys_debug_putint(unative_t i)	103	static unative_t sys_debug_putint(unative_t i)
105	{	104	{
106	printf("[task:0x%x]", i);	105	printf("[task:0x%x]", i);
107	return 0;	106	return 0;
108	}	107	}
109		108
-		109	/** Tell kernel to relinquish keyboard/console access */
-		110	static unative_t sys_debug_disable_console(void)
-		111	{
-		112	release_console();
-		113	return true;
-		114	}
-		115
110	/** Dispatch system call */	116	/** Dispatch system call */
111	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	117	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
112	unative_t a4, unative_t a5, unative_t a6, unative_t id)	118	unative_t a4, unative_t a5, unative_t a6, unative_t id)
113	{	119	{
114	unative_t rc;	120	unative_t rc;
115		121
116	#ifdef CONFIG_UDEBUG	122	#ifdef CONFIG_UDEBUG
117	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);	123	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
118	#endif	124	#endif
119	if (id < SYSCALL_END) {	125	if (id < SYSCALL_END) {
120	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	126	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
121	} else {	127	} else {
122	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	128	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
123	task_kill(TASK->taskid);	129	task_kill(TASK->taskid);
124	thread_exit();	130	thread_exit();
125	}	131	}
126		132
127	if (THREAD->interrupted)	133	if (THREAD->interrupted)
128	thread_exit();	134	thread_exit();
129		135
130	#ifdef CONFIG_UDEBUG	136	#ifdef CONFIG_UDEBUG
131	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);	137	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
132		138
133	/*	139	/*
134	* Stopping point needed for tasks that only invoke non-blocking	140	* Stopping point needed for tasks that only invoke non-blocking
135	* system calls.	141	* system calls.
136	*/	142	*/
137	udebug_stoppable_begin();	143	udebug_stoppable_begin();
138	udebug_stoppable_end();	144	udebug_stoppable_end();
139	#endif	145	#endif
140	return rc;	146	return rc;
141	}	147	}
142		148
143	syshandler_t syscall_table[SYSCALL_END] = {	149	syshandler_t syscall_table[SYSCALL_END] = {
144	(syshandler_t) sys_klog,	150	(syshandler_t) sys_klog,
145	(syshandler_t) sys_tls_set,	151	(syshandler_t) sys_tls_set,
146		152
147	/* Thread and task related syscalls. */	153	/* Thread and task related syscalls. */
148	(syshandler_t) sys_thread_create,	154	(syshandler_t) sys_thread_create,
149	(syshandler_t) sys_thread_exit,	155	(syshandler_t) sys_thread_exit,
150	(syshandler_t) sys_thread_get_id,	156	(syshandler_t) sys_thread_get_id,
151		157
152	(syshandler_t) sys_task_get_id,	158	(syshandler_t) sys_task_get_id,
153	(syshandler_t) sys_program_spawn_loader,	159	(syshandler_t) sys_program_spawn_loader,
154		160
155	/* Synchronization related syscalls. */	161	/* Synchronization related syscalls. */
156	(syshandler_t) sys_futex_sleep_timeout,	162	(syshandler_t) sys_futex_sleep_timeout,
157	(syshandler_t) sys_futex_wakeup,	163	(syshandler_t) sys_futex_wakeup,
158	(syshandler_t) sys_smc_coherence,	164	(syshandler_t) sys_smc_coherence,
159		165
160	/* Address space related syscalls. */	166	/* Address space related syscalls. */
161	(syshandler_t) sys_as_area_create,	167	(syshandler_t) sys_as_area_create,
162	(syshandler_t) sys_as_area_resize,	168	(syshandler_t) sys_as_area_resize,
163	(syshandler_t) sys_as_area_change_flags,	169	(syshandler_t) sys_as_area_change_flags,
164	(syshandler_t) sys_as_area_destroy,	170	(syshandler_t) sys_as_area_destroy,
165		171
166	/* IPC related syscalls. */	172	/* IPC related syscalls. */
167	(syshandler_t) sys_ipc_call_sync_fast,	173	(syshandler_t) sys_ipc_call_sync_fast,
168	(syshandler_t) sys_ipc_call_sync_slow,	174	(syshandler_t) sys_ipc_call_sync_slow,
169	(syshandler_t) sys_ipc_call_async_fast,	175	(syshandler_t) sys_ipc_call_async_fast,
170	(syshandler_t) sys_ipc_call_async_slow,	176	(syshandler_t) sys_ipc_call_async_slow,
171	(syshandler_t) sys_ipc_answer_fast,	177	(syshandler_t) sys_ipc_answer_fast,
172	(syshandler_t) sys_ipc_answer_slow,	178	(syshandler_t) sys_ipc_answer_slow,
173	(syshandler_t) sys_ipc_forward_fast,	179	(syshandler_t) sys_ipc_forward_fast,
-		180	(syshandler_t) sys_ipc_forward_slow,
174	(syshandler_t) sys_ipc_wait_for_call,	181	(syshandler_t) sys_ipc_wait_for_call,
175	(syshandler_t) sys_ipc_hangup,	182	(syshandler_t) sys_ipc_hangup,
176	(syshandler_t) sys_ipc_register_irq,	183	(syshandler_t) sys_ipc_register_irq,
177	(syshandler_t) sys_ipc_unregister_irq,	184	(syshandler_t) sys_ipc_unregister_irq,
178		185
179	/* Capabilities related syscalls. */	186	/* Capabilities related syscalls. */
180	(syshandler_t) sys_cap_grant,	187	(syshandler_t) sys_cap_grant,
181	(syshandler_t) sys_cap_revoke,	188	(syshandler_t) sys_cap_revoke,
182		189
183	/* DDI related syscalls. */	190	/* DDI related syscalls. */
184	(syshandler_t) sys_physmem_map,	191	(syshandler_t) sys_physmem_map,
185	(syshandler_t) sys_iospace_enable,	192	(syshandler_t) sys_iospace_enable,
186	(syshandler_t) sys_preempt_control,	193	(syshandler_t) sys_preempt_control,
187		194
188	/* Sysinfo syscalls */	195	/* Sysinfo syscalls */
189	(syshandler_t) sys_sysinfo_valid,	196	(syshandler_t) sys_sysinfo_valid,
190	(syshandler_t) sys_sysinfo_value,	197	(syshandler_t) sys_sysinfo_value,
191		198
192	/* Debug calls */	199	/* Debug calls */
193	(syshandler_t) sys_debug_putint,	200	(syshandler_t) sys_debug_putint,
194	(syshandler_t) sys_debug_enable_console,	201	(syshandler_t) sys_debug_enable_console,
-		202	(syshandler_t) sys_debug_disable_console,
195		203
196	(syshandler_t) sys_ipc_connect_kbox	204	(syshandler_t) sys_ipc_connect_kbox
197	};	205	};
198		206
199	/** @}	207	/** @}
200	*/	208	*/
201		209

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c @ 4337 – Rev 4337 → 4341