WebSVN – HelenOS-historic – Diff – /kernel/trunk/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 <console/klog.h>
 
/** Print using kernel facility
 *
 * Some simulators can print only through kernel. Userspace can use
 * this syscall to facilitate it.
 */
static unative_t sys_io(int fd, const void * buf, size_t count)
{
    size_t i;
    char *data;
    int rc;
 
    if (count > PAGE_SIZE)
        return ELIMIT;
 
    data = 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 id)
{
    unative_t rc;
 
    if (id < SYSCALL_END)
        rc = syscall_table[id](a1,a2,a3,a4);
    else {
        klog_printf("TASK %lld: Unknown syscall id %d",TASK->taskid,id);
        task_kill(TASK->taskid);
        thread_exit();
    }
       
    if (THREAD->interrupted)
        thread_exit();
   
    return rc;
}
 
syshandler_t syscall_table[SYSCALL_END] = {
    sys_io,
    sys_tls_set,
   
    /* Thread and task related syscalls. */
    sys_thread_create,
    sys_thread_exit,
    sys_task_get_id,
   
    /* Synchronization related syscalls. */
    sys_futex_sleep_timeout,
    sys_futex_wakeup,
   
    /* Address space related syscalls. */
    sys_as_area_create,
    sys_as_area_resize,
    sys_as_area_destroy,
 
    /* IPC related syscalls. */
    sys_ipc_call_sync_fast,
    sys_ipc_call_sync,
    sys_ipc_call_async_fast,
    sys_ipc_call_async,
    sys_ipc_answer_fast,
    sys_ipc_answer,
    sys_ipc_forward_fast,
    sys_ipc_wait_for_call,
    sys_ipc_hangup,
    sys_ipc_register_irq,
    sys_ipc_unregister_irq,
 
    /* Capabilities related syscalls. */
    sys_cap_grant,
    sys_cap_revoke,
 
    /* DDI related syscalls. */
    sys_physmem_map,
    sys_iospace_enable,
    sys_preempt_control,
   
    /* Sysinfo syscalls */
    sys_sysinfo_valid,
    sys_sysinfo_value,
   
    /* Debug calls */
    sys_debug_enable_console
};
 
 /** @}
 */
 
 

Rev 1702	Rev 1780
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>	54	#include <console/klog.h>
55		55
56	/** Print using kernel facility	56	/** Print using kernel facility
57	*	57	*
58	* Some simulators can print only through kernel. Userspace can use	58	* Some simulators can print only through kernel. Userspace can use
59	* this syscall to facilitate it.	59	* this syscall to facilitate it.
60	*/	60	*/
61	static __native sys_io(int fd, const void * buf, size_t count)	61	static unative_t sys_io(int fd, const void * buf, size_t count)
62	{	62	{
63	size_t i;	63	size_t i;
64	char *data;	64	char *data;
65	int rc;	65	int rc;
66		66
67	if (count > PAGE_SIZE)	67	if (count > PAGE_SIZE)
68	return ELIMIT;	68	return ELIMIT;
69		69
70	data = malloc(count, 0);	70	data = malloc(count, 0);
71	if (!data)	71	if (!data)
72	return ENOMEM;	72	return ENOMEM;
73		73
74	rc = copy_from_uspace(data, buf, count);	74	rc = copy_from_uspace(data, buf, count);
75	if (rc) {	75	if (rc) {
76	free(data);	76	free(data);
77	return rc;	77	return rc;
78	}	78	}
79		79
80	for (i = 0; i < count; i++)	80	for (i = 0; i < count; i++)
81	putchar(data[i]);	81	putchar(data[i]);
82	free(data);	82	free(data);
83		83
84	return count;	84	return count;
85	}	85	}
86		86
87	/** Tell kernel to get keyboard/console access again */	87	/** Tell kernel to get keyboard/console access again */
88	static __native sys_debug_enable_console(void)	88	static unative_t sys_debug_enable_console(void)
89	{	89	{
90	arch_grab_console();	90	arch_grab_console();
91	return 0;	91	return 0;
92	}	92	}
93		93
94	/** Dispatch system call */	94	/** Dispatch system call */
95	__native syscall_handler(__native a1, __native a2, __native a3,	95	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
96	__native a4, __native id)	96	unative_t a4, unative_t id)
97	{	97	{
98	__native rc;	98	unative_t rc;
99		99
100	if (id < SYSCALL_END)	100	if (id < SYSCALL_END)
101	rc = syscall_table[id](a1,a2,a3,a4);	101	rc = syscall_table[id](a1,a2,a3,a4);
102	else {	102	else {
103	klog_printf("TASK %lld: Unknown syscall id %d",TASK->taskid,id);	103	klog_printf("TASK %lld: Unknown syscall id %d",TASK->taskid,id);
104	task_kill(TASK->taskid);	104	task_kill(TASK->taskid);
105	thread_exit();	105	thread_exit();
106	}	106	}
107		107
108	if (THREAD->interrupted)	108	if (THREAD->interrupted)
109	thread_exit();	109	thread_exit();
110		110
111	return rc;	111	return rc;
112	}	112	}
113		113
114	syshandler_t syscall_table[SYSCALL_END] = {	114	syshandler_t syscall_table[SYSCALL_END] = {
115	sys_io,	115	sys_io,
116	sys_tls_set,	116	sys_tls_set,
117		117
118	/* Thread and task related syscalls. */	118	/* Thread and task related syscalls. */
119	sys_thread_create,	119	sys_thread_create,
120	sys_thread_exit,	120	sys_thread_exit,
121	sys_task_get_id,	121	sys_task_get_id,
122		122
123	/* Synchronization related syscalls. */	123	/* Synchronization related syscalls. */
124	sys_futex_sleep_timeout,	124	sys_futex_sleep_timeout,
125	sys_futex_wakeup,	125	sys_futex_wakeup,
126		126
127	/* Address space related syscalls. */	127	/* Address space related syscalls. */
128	sys_as_area_create,	128	sys_as_area_create,
129	sys_as_area_resize,	129	sys_as_area_resize,
130	sys_as_area_destroy,	130	sys_as_area_destroy,
131		131
132	/* IPC related syscalls. */	132	/* IPC related syscalls. */
133	sys_ipc_call_sync_fast,	133	sys_ipc_call_sync_fast,
134	sys_ipc_call_sync,	134	sys_ipc_call_sync,
135	sys_ipc_call_async_fast,	135	sys_ipc_call_async_fast,
136	sys_ipc_call_async,	136	sys_ipc_call_async,
137	sys_ipc_answer_fast,	137	sys_ipc_answer_fast,
138	sys_ipc_answer,	138	sys_ipc_answer,
139	sys_ipc_forward_fast,	139	sys_ipc_forward_fast,
140	sys_ipc_wait_for_call,	140	sys_ipc_wait_for_call,
141	sys_ipc_hangup,	141	sys_ipc_hangup,
142	sys_ipc_register_irq,	142	sys_ipc_register_irq,
143	sys_ipc_unregister_irq,	143	sys_ipc_unregister_irq,
144		144
145	/* Capabilities related syscalls. */	145	/* Capabilities related syscalls. */
146	sys_cap_grant,	146	sys_cap_grant,
147	sys_cap_revoke,	147	sys_cap_revoke,
148		148
149	/* DDI related syscalls. */	149	/* DDI related syscalls. */
150	sys_physmem_map,	150	sys_physmem_map,
151	sys_iospace_enable,	151	sys_iospace_enable,
152	sys_preempt_control,	152	sys_preempt_control,
153		153
154	/* Sysinfo syscalls */	154	/* Sysinfo syscalls */
155	sys_sysinfo_valid,	155	sys_sysinfo_valid,
156	sys_sysinfo_value,	156	sys_sysinfo_value,
157		157
158	/* Debug calls */	158	/* Debug calls */
159	sys_debug_enable_console	159	sys_debug_enable_console
160	};	160	};
161		161
162	/** @}	162	/** @}
163	*/	163	*/
164		164
165		165

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/syscall/syscall.c – Rev 1702 → 1780