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 <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,
   
    /* 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 3190	Rev 3203
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 <mm/as.h>	42	#include <mm/as.h>
42	#include <print.h>	43	#include <print.h>
43	#include <putchar.h>	44	#include <putchar.h>
44	#include <errno.h>	45	#include <errno.h>
45	#include <arch.h>	46	#include <arch.h>
46	#include <debug.h>	47	#include <debug.h>
47	#include <ipc/sysipc.h>	48	#include <ipc/sysipc.h>
48	#include <synch/futex.h>	49	#include <synch/futex.h>
49	#include <ddi/ddi.h>	50	#include <ddi/ddi.h>
50	#include <security/cap.h>	51	#include <security/cap.h>
51	#include <syscall/copy.h>	52	#include <syscall/copy.h>
52	#include <sysinfo/sysinfo.h>	53	#include <sysinfo/sysinfo.h>
53	#include <console/console.h>	54	#include <console/console.h>
54		55
55	/** Print using kernel facility	56	/** Print using kernel facility
56	*	57	*
57	* Print to kernel log.	58	* Print to kernel log.
58	*	59	*
59	*/	60	*/
60	static unative_t sys_klog(int fd, const void * buf, size_t count)	61	static unative_t sys_klog(int fd, const void * buf, size_t count)
61	{	62	{
62	size_t i;	63	size_t i;
63	char *data;	64	char *data;
64	int rc;	65	int rc;
65		66
66	if (count > PAGE_SIZE)	67	if (count > PAGE_SIZE)
67	return ELIMIT;	68	return ELIMIT;
68		69
69	if (count > 0) {	70	if (count > 0) {
70	data = (char *) malloc(count, 0);	71	data = (char *) malloc(count, 0);
71	if (!data)	72	if (!data)
72	return ENOMEM;	73	return ENOMEM;
73		74
74	rc = copy_from_uspace(data, buf, count);	75	rc = copy_from_uspace(data, buf, count);
75	if (rc) {	76	if (rc) {
76	free(data);	77	free(data);
77	return rc;	78	return rc;
78	}	79	}
79		80
80	for (i = 0; i < count; i++)	81	for (i = 0; i < count; i++)
81	putchar(data[i]);	82	putchar(data[i]);
82	free(data);	83	free(data);
83	} else	84	} else
84	klog_update();	85	klog_update();
85		86
86	return count;	87	return count;
87	}	88	}
88		89
89	/** Tell kernel to get keyboard/console access again */	90	/** Tell kernel to get keyboard/console access again */
90	static unative_t sys_debug_enable_console(void)	91	static unative_t sys_debug_enable_console(void)
91	{	92	{
92	arch_grab_console();	93	arch_grab_console();
93	return 0;	94	return 0;
94	}	95	}
95		96
96	/** Print a hex integer into klog */	97	/** Print a hex integer into klog */
97	static unative_t sys_debug_putint(unative_t i)	98	static unative_t sys_debug_putint(unative_t i)
98	{	99	{
99	printf("[task:0x%x]", i);	100	printf("[task:0x%x]", i);
100	return 0;	101	return 0;
101	}	102	}
102		103
103	/** Dispatch system call */	104	/** Dispatch system call */
104	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	105	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
105	unative_t a4, unative_t a5, unative_t a6, unative_t id)	106	unative_t a4, unative_t a5, unative_t a6, unative_t id)
106	{	107	{
107	unative_t rc;	108	unative_t rc;
108		109
109	if (id < SYSCALL_END)	110	if (id < SYSCALL_END)
110	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	111	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
111	else {	112	else {
112	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	113	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
113	task_kill(TASK->taskid);	114	task_kill(TASK->taskid);
114	thread_exit();	115	thread_exit();
115	}	116	}
116		117
117	if (THREAD->interrupted)	118	if (THREAD->interrupted)
118	thread_exit();	119	thread_exit();
119		120
120	return rc;	121	return rc;
121	}	122	}
122		123
123	syshandler_t syscall_table[SYSCALL_END] = {	124	syshandler_t syscall_table[SYSCALL_END] = {
124	(syshandler_t) sys_klog,	125	(syshandler_t) sys_klog,
125	(syshandler_t) sys_tls_set,	126	(syshandler_t) sys_tls_set,
126		127
127	/* Thread and task related syscalls. */	128	/* Thread and task related syscalls. */
128	(syshandler_t) sys_thread_create,	129	(syshandler_t) sys_thread_create,
129	(syshandler_t) sys_thread_exit,	130	(syshandler_t) sys_thread_exit,
130	(syshandler_t) sys_thread_get_id,	131	(syshandler_t) sys_thread_get_id,
131		132
132	(syshandler_t) sys_task_get_id,	133	(syshandler_t) sys_task_get_id,
133	(syshandler_t) sys_task_spawn_loader,	134	(syshandler_t) sys_program_spawn_loader,
134		135
135	/* Synchronization related syscalls. */	136	/* Synchronization related syscalls. */
136	(syshandler_t) sys_futex_sleep_timeout,	137	(syshandler_t) sys_futex_sleep_timeout,
137	(syshandler_t) sys_futex_wakeup,	138	(syshandler_t) sys_futex_wakeup,
138		139
139	/* Address space related syscalls. */	140	/* Address space related syscalls. */
140	(syshandler_t) sys_as_area_create,	141	(syshandler_t) sys_as_area_create,
141	(syshandler_t) sys_as_area_resize,	142	(syshandler_t) sys_as_area_resize,
142	(syshandler_t) sys_as_area_change_flags,	143	(syshandler_t) sys_as_area_change_flags,
143	(syshandler_t) sys_as_area_destroy,	144	(syshandler_t) sys_as_area_destroy,
144		145
145	/* IPC related syscalls. */	146	/* IPC related syscalls. */
146	(syshandler_t) sys_ipc_call_sync_fast,	147	(syshandler_t) sys_ipc_call_sync_fast,
147	(syshandler_t) sys_ipc_call_sync_slow,	148	(syshandler_t) sys_ipc_call_sync_slow,
148	(syshandler_t) sys_ipc_call_async_fast,	149	(syshandler_t) sys_ipc_call_async_fast,
149	(syshandler_t) sys_ipc_call_async_slow,	150	(syshandler_t) sys_ipc_call_async_slow,
150	(syshandler_t) sys_ipc_answer_fast,	151	(syshandler_t) sys_ipc_answer_fast,
151	(syshandler_t) sys_ipc_answer_slow,	152	(syshandler_t) sys_ipc_answer_slow,
152	(syshandler_t) sys_ipc_forward_fast,	153	(syshandler_t) sys_ipc_forward_fast,
153	(syshandler_t) sys_ipc_wait_for_call,	154	(syshandler_t) sys_ipc_wait_for_call,
154	(syshandler_t) sys_ipc_hangup,	155	(syshandler_t) sys_ipc_hangup,
155	(syshandler_t) sys_ipc_register_irq,	156	(syshandler_t) sys_ipc_register_irq,
156	(syshandler_t) sys_ipc_unregister_irq,	157	(syshandler_t) sys_ipc_unregister_irq,
157		158
158	/* Capabilities related syscalls. */	159	/* Capabilities related syscalls. */
159	(syshandler_t) sys_cap_grant,	160	(syshandler_t) sys_cap_grant,
160	(syshandler_t) sys_cap_revoke,	161	(syshandler_t) sys_cap_revoke,
161		162
162	/* DDI related syscalls. */	163	/* DDI related syscalls. */
163	(syshandler_t) sys_physmem_map,	164	(syshandler_t) sys_physmem_map,
164	(syshandler_t) sys_iospace_enable,	165	(syshandler_t) sys_iospace_enable,
165	(syshandler_t) sys_preempt_control,	166	(syshandler_t) sys_preempt_control,
166		167
167	/* Sysinfo syscalls */	168	/* Sysinfo syscalls */
168	(syshandler_t) sys_sysinfo_valid,	169	(syshandler_t) sys_sysinfo_valid,
169	(syshandler_t) sys_sysinfo_value,	170	(syshandler_t) sys_sysinfo_value,
170		171
171	/* Debug calls */	172	/* Debug calls */
172	(syshandler_t) sys_debug_putint,	173	(syshandler_t) sys_debug_putint,
173	(syshandler_t) sys_debug_enable_console	174	(syshandler_t) sys_debug_enable_console
174	};	175	};
175		176
176	/** @}	177	/** @}
177	*/	178	*/
178		179

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c – Rev 3190 → 3203