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)
{
    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)
{
#ifdef CONFIG_KCONSOLE
    arch_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;
}
 
/** 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_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_ipc_connect_kbox
};
 
/** @}
 */
 

Rev 3674	Rev 4337
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;	65	size_t i;
66	char *data;	66	char *data;
67	int rc;	67	int rc;
68		68
69	if (count > PAGE_SIZE)	69	if (count > PAGE_SIZE)
70	return ELIMIT;	70	return ELIMIT;
71		71
72	if (count > 0) {	72	if (count > 0) {
73	data = (char *) malloc(count, 0);	73	data = (char *) malloc(count, 0);
74	if (!data)	74	if (!data)
75	return ENOMEM;	75	return ENOMEM;
76		76
77	rc = copy_from_uspace(data, buf, count);	77	rc = copy_from_uspace(data, buf, count);
78	if (rc) {	78	if (rc) {
79	free(data);	79	free(data);
80	return rc;	80	return rc;
81	}	81	}
82		82
83	for (i = 0; i < count; i++)	83	for (i = 0; i < count; i++)
84	putchar(data[i]);	84	putchar(data[i]);
85	free(data);	85	free(data);
86	} else	86	} else
87	klog_update();	87	klog_update();
88		88
89	return count;	89	return count;
90	}	90	}
91		91
92	/** Tell kernel to get keyboard/console access again */	92	/** Tell kernel to get keyboard/console access again */
93	static unative_t sys_debug_enable_console(void)	93	static unative_t sys_debug_enable_console(void)
94	{	94	{
-		95	#ifdef CONFIG_KCONSOLE
95	arch_grab_console();	96	arch_grab_console();
96	return 0;	97	return true;
-		98	#else
-		99	return false;
-		100	#endif
97	}	101	}
98		102
99	/** Print a hex integer into klog */	103	/** Print a hex integer into klog */
100	static unative_t sys_debug_putint(unative_t i)	104	static unative_t sys_debug_putint(unative_t i)
101	{	105	{
102	printf("[task:0x%x]", i);	106	printf("[task:0x%x]", i);
103	return 0;	107	return 0;
104	}	108	}
105		109
106	/** Dispatch system call */	110	/** Dispatch system call */
107	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	111	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
108	unative_t a4, unative_t a5, unative_t a6, unative_t id)	112	unative_t a4, unative_t a5, unative_t a6, unative_t id)
109	{	113	{
110	unative_t rc;	114	unative_t rc;
111		115
112	#ifdef CONFIG_UDEBUG	116	#ifdef CONFIG_UDEBUG
113	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);	117	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
114	#endif	118	#endif
115	if (id < SYSCALL_END) {	119	if (id < SYSCALL_END) {
116	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	120	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
117	} else {	121	} else {
118	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	122	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
119	task_kill(TASK->taskid);	123	task_kill(TASK->taskid);
120	thread_exit();	124	thread_exit();
121	}	125	}
122		126
123	if (THREAD->interrupted)	127	if (THREAD->interrupted)
124	thread_exit();	128	thread_exit();
125		129
126	#ifdef CONFIG_UDEBUG	130	#ifdef CONFIG_UDEBUG
127	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);	131	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
128		132
129	/*	133	/*
130	* Stopping point needed for tasks that only invoke non-blocking	134	* Stopping point needed for tasks that only invoke non-blocking
131	* system calls.	135	* system calls.
132	*/	136	*/
133	udebug_stoppable_begin();	137	udebug_stoppable_begin();
134	udebug_stoppable_end();	138	udebug_stoppable_end();
135	#endif	139	#endif
136	return rc;	140	return rc;
137	}	141	}
138		142
139	syshandler_t syscall_table[SYSCALL_END] = {	143	syshandler_t syscall_table[SYSCALL_END] = {
140	(syshandler_t) sys_klog,	144	(syshandler_t) sys_klog,
141	(syshandler_t) sys_tls_set,	145	(syshandler_t) sys_tls_set,
142		146
143	/* Thread and task related syscalls. */	147	/* Thread and task related syscalls. */
144	(syshandler_t) sys_thread_create,	148	(syshandler_t) sys_thread_create,
145	(syshandler_t) sys_thread_exit,	149	(syshandler_t) sys_thread_exit,
146	(syshandler_t) sys_thread_get_id,	150	(syshandler_t) sys_thread_get_id,
147		151
148	(syshandler_t) sys_task_get_id,	152	(syshandler_t) sys_task_get_id,
149	(syshandler_t) sys_program_spawn_loader,	153	(syshandler_t) sys_program_spawn_loader,
150		154
151	/* Synchronization related syscalls. */	155	/* Synchronization related syscalls. */
152	(syshandler_t) sys_futex_sleep_timeout,	156	(syshandler_t) sys_futex_sleep_timeout,
153	(syshandler_t) sys_futex_wakeup,	157	(syshandler_t) sys_futex_wakeup,
154	(syshandler_t) sys_smc_coherence,	158	(syshandler_t) sys_smc_coherence,
155		159
156	/* Address space related syscalls. */	160	/* Address space related syscalls. */
157	(syshandler_t) sys_as_area_create,	161	(syshandler_t) sys_as_area_create,
158	(syshandler_t) sys_as_area_resize,	162	(syshandler_t) sys_as_area_resize,
159	(syshandler_t) sys_as_area_change_flags,	163	(syshandler_t) sys_as_area_change_flags,
160	(syshandler_t) sys_as_area_destroy,	164	(syshandler_t) sys_as_area_destroy,
161		165
162	/* IPC related syscalls. */	166	/* IPC related syscalls. */
163	(syshandler_t) sys_ipc_call_sync_fast,	167	(syshandler_t) sys_ipc_call_sync_fast,
164	(syshandler_t) sys_ipc_call_sync_slow,	168	(syshandler_t) sys_ipc_call_sync_slow,
165	(syshandler_t) sys_ipc_call_async_fast,	169	(syshandler_t) sys_ipc_call_async_fast,
166	(syshandler_t) sys_ipc_call_async_slow,	170	(syshandler_t) sys_ipc_call_async_slow,
167	(syshandler_t) sys_ipc_answer_fast,	171	(syshandler_t) sys_ipc_answer_fast,
168	(syshandler_t) sys_ipc_answer_slow,	172	(syshandler_t) sys_ipc_answer_slow,
169	(syshandler_t) sys_ipc_forward_fast,	173	(syshandler_t) sys_ipc_forward_fast,
170	(syshandler_t) sys_ipc_wait_for_call,	174	(syshandler_t) sys_ipc_wait_for_call,
171	(syshandler_t) sys_ipc_hangup,	175	(syshandler_t) sys_ipc_hangup,
172	(syshandler_t) sys_ipc_register_irq,	176	(syshandler_t) sys_ipc_register_irq,
173	(syshandler_t) sys_ipc_unregister_irq,	177	(syshandler_t) sys_ipc_unregister_irq,
174		178
175	/* Capabilities related syscalls. */	179	/* Capabilities related syscalls. */
176	(syshandler_t) sys_cap_grant,	180	(syshandler_t) sys_cap_grant,
177	(syshandler_t) sys_cap_revoke,	181	(syshandler_t) sys_cap_revoke,
178		182
179	/* DDI related syscalls. */	183	/* DDI related syscalls. */
180	(syshandler_t) sys_physmem_map,	184	(syshandler_t) sys_physmem_map,
181	(syshandler_t) sys_iospace_enable,	185	(syshandler_t) sys_iospace_enable,
182	(syshandler_t) sys_preempt_control,	186	(syshandler_t) sys_preempt_control,
183		187
184	/* Sysinfo syscalls */	188	/* Sysinfo syscalls */
185	(syshandler_t) sys_sysinfo_valid,	189	(syshandler_t) sys_sysinfo_valid,
186	(syshandler_t) sys_sysinfo_value,	190	(syshandler_t) sys_sysinfo_value,
187		191
188	/* Debug calls */	192	/* Debug calls */
189	(syshandler_t) sys_debug_putint,	193	(syshandler_t) sys_debug_putint,
190	(syshandler_t) sys_debug_enable_console,	194	(syshandler_t) sys_debug_enable_console,
191		195
192	(syshandler_t) sys_ipc_connect_kbox	196	(syshandler_t) sys_ipc_connect_kbox
193	};	197	};
194		198
195	/** @}	199	/** @}
196	*/	200	*/
197		201

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c – Rev 3674 → 4337