WebSVN – HelenOS – Diff – /trunk/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 == 0)
        return 0;
 
    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;
}
 
/** 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,
   
    /* 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
};
 
/** @}
 */
 

Rev 3064	Rev 3096
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 == 0)
-		67	return 0;
-		68
66	if (count > PAGE_SIZE)	69	if (count > PAGE_SIZE)
67	return ELIMIT;	70	return ELIMIT;
68		71
69	data = (char *) malloc(count, 0);	72	data = (char *) malloc(count, 0);
70	if (!data)	73	if (!data)
71	return ENOMEM;	74	return ENOMEM;
72		75
73	rc = copy_from_uspace(data, buf, count);	76	rc = copy_from_uspace(data, buf, count);
74	if (rc) {	77	if (rc) {
75	free(data);	78	free(data);
76	return rc;	79	return rc;
77	}	80	}
78		81
79	for (i = 0; i < count; i++)	82	for (i = 0; i < count; i++)
80	putchar(data[i]);	83	putchar(data[i]);
81	free(data);	84	free(data);
82		85
83	return count;	86	return count;
84	}	87	}
85		88
86	/** Tell kernel to get keyboard/console access again */	89	/** Tell kernel to get keyboard/console access again */
87	static unative_t sys_debug_enable_console(void)	90	static unative_t sys_debug_enable_console(void)
88	{	91	{
89	arch_grab_console();	92	arch_grab_console();
90	return 0;	93	return 0;
91	}	94	}
92		95
93	/** Dispatch system call */	96	/** Dispatch system call */
94	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	97	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
95	unative_t a4, unative_t a5, unative_t a6, unative_t id)	98	unative_t a4, unative_t a5, unative_t a6, unative_t id)
96	{	99	{
97	unative_t rc;	100	unative_t rc;
98		101
99	if (id < SYSCALL_END)	102	if (id < SYSCALL_END)
100	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	103	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
101	else {	104	else {
102	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	105	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
103	task_kill(TASK->taskid);	106	task_kill(TASK->taskid);
104	thread_exit();	107	thread_exit();
105	}	108	}
106		109
107	if (THREAD->interrupted)	110	if (THREAD->interrupted)
108	thread_exit();	111	thread_exit();
109		112
110	return rc;	113	return rc;
111	}	114	}
112		115
113	syshandler_t syscall_table[SYSCALL_END] = {	116	syshandler_t syscall_table[SYSCALL_END] = {
114	(syshandler_t) sys_io,	117	(syshandler_t) sys_io,
115	(syshandler_t) sys_tls_set,	118	(syshandler_t) sys_tls_set,
116		119
117	/* Thread and task related syscalls. */	120	/* Thread and task related syscalls. */
118	(syshandler_t) sys_thread_create,	121	(syshandler_t) sys_thread_create,
119	(syshandler_t) sys_thread_exit,	122	(syshandler_t) sys_thread_exit,
120	(syshandler_t) sys_thread_get_id,	123	(syshandler_t) sys_thread_get_id,
121		124
122	(syshandler_t) sys_task_get_id,	125	(syshandler_t) sys_task_get_id,
123	(syshandler_t) sys_task_spawn,	126	(syshandler_t) sys_task_spawn,
124		127
125	/* Synchronization related syscalls. */	128	/* Synchronization related syscalls. */
126	(syshandler_t) sys_futex_sleep_timeout,	129	(syshandler_t) sys_futex_sleep_timeout,
127	(syshandler_t) sys_futex_wakeup,	130	(syshandler_t) sys_futex_wakeup,
128		131
129	/* Address space related syscalls. */	132	/* Address space related syscalls. */
130	(syshandler_t) sys_as_area_create,	133	(syshandler_t) sys_as_area_create,
131	(syshandler_t) sys_as_area_resize,	134	(syshandler_t) sys_as_area_resize,
132	(syshandler_t) sys_as_area_destroy,	135	(syshandler_t) sys_as_area_destroy,
133		136
134	/* IPC related syscalls. */	137	/* IPC related syscalls. */
135	(syshandler_t) sys_ipc_call_sync_fast,	138	(syshandler_t) sys_ipc_call_sync_fast,
136	(syshandler_t) sys_ipc_call_sync_slow,	139	(syshandler_t) sys_ipc_call_sync_slow,
137	(syshandler_t) sys_ipc_call_async_fast,	140	(syshandler_t) sys_ipc_call_async_fast,
138	(syshandler_t) sys_ipc_call_async_slow,	141	(syshandler_t) sys_ipc_call_async_slow,
139	(syshandler_t) sys_ipc_answer_fast,	142	(syshandler_t) sys_ipc_answer_fast,
140	(syshandler_t) sys_ipc_answer_slow,	143	(syshandler_t) sys_ipc_answer_slow,
141	(syshandler_t) sys_ipc_forward_fast,	144	(syshandler_t) sys_ipc_forward_fast,
142	(syshandler_t) sys_ipc_wait_for_call,	145	(syshandler_t) sys_ipc_wait_for_call,
143	(syshandler_t) sys_ipc_hangup,	146	(syshandler_t) sys_ipc_hangup,
144	(syshandler_t) sys_ipc_register_irq,	147	(syshandler_t) sys_ipc_register_irq,
145	(syshandler_t) sys_ipc_unregister_irq,	148	(syshandler_t) sys_ipc_unregister_irq,
146		149
147	/* Capabilities related syscalls. */	150	/* Capabilities related syscalls. */
148	(syshandler_t) sys_cap_grant,	151	(syshandler_t) sys_cap_grant,
149	(syshandler_t) sys_cap_revoke,	152	(syshandler_t) sys_cap_revoke,
150		153
151	/* DDI related syscalls. */	154	/* DDI related syscalls. */
152	(syshandler_t) sys_physmem_map,	155	(syshandler_t) sys_physmem_map,
153	(syshandler_t) sys_iospace_enable,	156	(syshandler_t) sys_iospace_enable,
154	(syshandler_t) sys_preempt_control,	157	(syshandler_t) sys_preempt_control,
155		158
156	/* Sysinfo syscalls */	159	/* Sysinfo syscalls */
157	(syshandler_t) sys_sysinfo_valid,	160	(syshandler_t) sys_sysinfo_valid,
158	(syshandler_t) sys_sysinfo_value,	161	(syshandler_t) sys_sysinfo_value,
159		162
160	/* Debug calls */	163	/* Debug calls */
161	(syshandler_t) sys_debug_enable_console	164	(syshandler_t) sys_debug_enable_console
162	};	165	};
163		166
164	/** @}	167	/** @}
165	*/	168	*/
166		169

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/syscall/syscall.c @ 3164 – Rev 3064 → 3096