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>
 
/** 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;
}
 
/** 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_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
};
 
/** @}
 */
 

Rev 3203	Rev 3210
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 <ddi/ddi.h>	51	#include <ddi/ddi.h>
51	#include <security/cap.h>	52	#include <security/cap.h>
52	#include <syscall/copy.h>	53	#include <syscall/copy.h>
53	#include <sysinfo/sysinfo.h>	54	#include <sysinfo/sysinfo.h>
54	#include <console/console.h>	55	#include <console/console.h>
55		56
56	/** Print using kernel facility	57	/** Print using kernel facility
57	*	58	*
58	* Print to kernel log.	59	* Print to kernel log.
59	*	60	*
60	*/	61	*/
61	static unative_t sys_klog(int fd, const void * buf, size_t count)	62	static unative_t sys_klog(int fd, const void * buf, size_t count)
62	{	63	{
63	size_t i;	64	size_t i;
64	char *data;	65	char *data;
65	int rc;	66	int rc;
66		67
67	if (count > PAGE_SIZE)	68	if (count > PAGE_SIZE)
68	return ELIMIT;	69	return ELIMIT;
69		70
70	if (count > 0) {	71	if (count > 0) {
71	data = (char *) malloc(count, 0);	72	data = (char *) malloc(count, 0);
72	if (!data)	73	if (!data)
73	return ENOMEM;	74	return ENOMEM;
74		75
75	rc = copy_from_uspace(data, buf, count);	76	rc = copy_from_uspace(data, buf, count);
76	if (rc) {	77	if (rc) {
77	free(data);	78	free(data);
78	return rc;	79	return rc;
79	}	80	}
80		81
81	for (i = 0; i < count; i++)	82	for (i = 0; i < count; i++)
82	putchar(data[i]);	83	putchar(data[i]);
83	free(data);	84	free(data);
84	} else	85	} else
85	klog_update();	86	klog_update();
86		87
87	return count;	88	return count;
88	}	89	}
89		90
90	/** Tell kernel to get keyboard/console access again */	91	/** Tell kernel to get keyboard/console access again */
91	static unative_t sys_debug_enable_console(void)	92	static unative_t sys_debug_enable_console(void)
92	{	93	{
93	arch_grab_console();	94	arch_grab_console();
94	return 0;	95	return 0;
95	}	96	}
96		97
97	/** Print a hex integer into klog */	98	/** Print a hex integer into klog */
98	static unative_t sys_debug_putint(unative_t i)	99	static unative_t sys_debug_putint(unative_t i)
99	{	100	{
100	printf("[task:0x%x]", i);	101	printf("[task:0x%x]", i);
101	return 0;	102	return 0;
102	}	103	}
103		104
104	/** Dispatch system call */	105	/** Dispatch system call */
105	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	106	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
106	unative_t a4, unative_t a5, unative_t a6, unative_t id)	107	unative_t a4, unative_t a5, unative_t a6, unative_t id)
107	{	108	{
108	unative_t rc;	109	unative_t rc;
109		110
110	if (id < SYSCALL_END)	111	if (id < SYSCALL_END)
111	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	112	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
112	else {	113	else {
113	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	114	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
114	task_kill(TASK->taskid);	115	task_kill(TASK->taskid);
115	thread_exit();	116	thread_exit();
116	}	117	}
117		118
118	if (THREAD->interrupted)	119	if (THREAD->interrupted)
119	thread_exit();	120	thread_exit();
120		121
121	return rc;	122	return rc;
122	}	123	}
123		124
124	syshandler_t syscall_table[SYSCALL_END] = {	125	syshandler_t syscall_table[SYSCALL_END] = {
125	(syshandler_t) sys_klog,	126	(syshandler_t) sys_klog,
126	(syshandler_t) sys_tls_set,	127	(syshandler_t) sys_tls_set,
127		128
128	/* Thread and task related syscalls. */	129	/* Thread and task related syscalls. */
129	(syshandler_t) sys_thread_create,	130	(syshandler_t) sys_thread_create,
130	(syshandler_t) sys_thread_exit,	131	(syshandler_t) sys_thread_exit,
131	(syshandler_t) sys_thread_get_id,	132	(syshandler_t) sys_thread_get_id,
132		133
133	(syshandler_t) sys_task_get_id,	134	(syshandler_t) sys_task_get_id,
134	(syshandler_t) sys_program_spawn_loader,	135	(syshandler_t) sys_program_spawn_loader,
135		136
136	/* Synchronization related syscalls. */	137	/* Synchronization related syscalls. */
137	(syshandler_t) sys_futex_sleep_timeout,	138	(syshandler_t) sys_futex_sleep_timeout,
138	(syshandler_t) sys_futex_wakeup,	139	(syshandler_t) sys_futex_wakeup,
-		140	(syshandler_t) sys_smc_coherence,
139		141
140	/* Address space related syscalls. */	142	/* Address space related syscalls. */
141	(syshandler_t) sys_as_area_create,	143	(syshandler_t) sys_as_area_create,
142	(syshandler_t) sys_as_area_resize,	144	(syshandler_t) sys_as_area_resize,
143	(syshandler_t) sys_as_area_change_flags,	145	(syshandler_t) sys_as_area_change_flags,
144	(syshandler_t) sys_as_area_destroy,	146	(syshandler_t) sys_as_area_destroy,
145		147
146	/* IPC related syscalls. */	148	/* IPC related syscalls. */
147	(syshandler_t) sys_ipc_call_sync_fast,	149	(syshandler_t) sys_ipc_call_sync_fast,
148	(syshandler_t) sys_ipc_call_sync_slow,	150	(syshandler_t) sys_ipc_call_sync_slow,
149	(syshandler_t) sys_ipc_call_async_fast,	151	(syshandler_t) sys_ipc_call_async_fast,
150	(syshandler_t) sys_ipc_call_async_slow,	152	(syshandler_t) sys_ipc_call_async_slow,
151	(syshandler_t) sys_ipc_answer_fast,	153	(syshandler_t) sys_ipc_answer_fast,
152	(syshandler_t) sys_ipc_answer_slow,	154	(syshandler_t) sys_ipc_answer_slow,
153	(syshandler_t) sys_ipc_forward_fast,	155	(syshandler_t) sys_ipc_forward_fast,
154	(syshandler_t) sys_ipc_wait_for_call,	156	(syshandler_t) sys_ipc_wait_for_call,
155	(syshandler_t) sys_ipc_hangup,	157	(syshandler_t) sys_ipc_hangup,
156	(syshandler_t) sys_ipc_register_irq,	158	(syshandler_t) sys_ipc_register_irq,
157	(syshandler_t) sys_ipc_unregister_irq,	159	(syshandler_t) sys_ipc_unregister_irq,
158		160
159	/* Capabilities related syscalls. */	161	/* Capabilities related syscalls. */
160	(syshandler_t) sys_cap_grant,	162	(syshandler_t) sys_cap_grant,
161	(syshandler_t) sys_cap_revoke,	163	(syshandler_t) sys_cap_revoke,
162		164
163	/* DDI related syscalls. */	165	/* DDI related syscalls. */
164	(syshandler_t) sys_physmem_map,	166	(syshandler_t) sys_physmem_map,
165	(syshandler_t) sys_iospace_enable,	167	(syshandler_t) sys_iospace_enable,
166	(syshandler_t) sys_preempt_control,	168	(syshandler_t) sys_preempt_control,
167		169
168	/* Sysinfo syscalls */	170	/* Sysinfo syscalls */
169	(syshandler_t) sys_sysinfo_valid,	171	(syshandler_t) sys_sysinfo_valid,
170	(syshandler_t) sys_sysinfo_value,	172	(syshandler_t) sys_sysinfo_value,
171		173
172	/* Debug calls */	174	/* Debug calls */
173	(syshandler_t) sys_debug_putint,	175	(syshandler_t) sys_debug_putint,
174	(syshandler_t) sys_debug_enable_console	176	(syshandler_t) sys_debug_enable_console
175	};	177	};
176		178
177	/** @}	179	/** @}
178	*/	180	*/
179		181

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c @ 3674 – Rev 3203 → 3210