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.
 */
 
/**
 * @file    syscall.c
 * @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
 *
 * Some simulators can print only through kernel. Userspace can use
 * this syscall to facilitate it.
 */
static __native 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 __native sys_debug_enable_console(void)
{
    arch_grab_console();
    return 0;
}
 
/** Dispatch system call */
__native syscall_handler(__native a1, __native a2, __native a3,
             __native a4, __native id)
{
    if (id < SYSCALL_END)
        return syscall_table[id](a1,a2,a3,a4);
    else
        panic("Undefined syscall %d", id);
}
 
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 1448	Rev 1474
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	/**	29	/**
30	* @file syscall.c	30	* @file syscall.c
31	* @brief Syscall table and syscall wrappers.	31	* @brief Syscall table and syscall wrappers.
32	*/	32	*/
33		33
34	#include <syscall/syscall.h>	34	#include <syscall/syscall.h>
35	#include <proc/thread.h>	35	#include <proc/thread.h>
36	#include <proc/task.h>	36	#include <proc/task.h>
37	#include <mm/as.h>	37	#include <mm/as.h>
38	#include <print.h>	38	#include <print.h>
39	#include <putchar.h>	39	#include <putchar.h>
40	#include <errno.h>	40	#include <errno.h>
41	#include <arch.h>	41	#include <arch.h>
42	#include <debug.h>	42	#include <debug.h>
43	#include <ipc/sysipc.h>	43	#include <ipc/sysipc.h>
44	#include <synch/futex.h>	44	#include <synch/futex.h>
45	#include <ddi/ddi.h>	45	#include <ddi/ddi.h>
46	#include <security/cap.h>	46	#include <security/cap.h>
47	#include <syscall/copy.h>	47	#include <syscall/copy.h>
48	#include <sysinfo/sysinfo.h>	48	#include <sysinfo/sysinfo.h>
-		49	#include <console/console.h>
49		50
50	/** Print using kernel facility	51	/** Print using kernel facility
51	*	52	*
52	* Some simulators can print only through kernel. Userspace can use	53	* Some simulators can print only through kernel. Userspace can use
53	* this syscall to facilitate it.	54	* this syscall to facilitate it.
54	*/	55	*/
55	static __native sys_io(int fd, const void * buf, size_t count)	56	static __native sys_io(int fd, const void * buf, size_t count)
56	{	57	{
57	size_t i;	58	size_t i;
58	char *data;	59	char *data;
59	int rc;	60	int rc;
60		61
61	if (count > PAGE_SIZE)	62	if (count > PAGE_SIZE)
62	return ELIMIT;	63	return ELIMIT;
63		64
64	data = malloc(count, 0);	65	data = malloc(count, 0);
65	if (!data)	66	if (!data)
66	return ENOMEM;	67	return ENOMEM;
67		68
68	rc = copy_from_uspace(data, buf, count);	69	rc = copy_from_uspace(data, buf, count);
69	if (rc) {	70	if (rc) {
70	free(data);	71	free(data);
71	return rc;	72	return rc;
72	}	73	}
73		74
74	for (i = 0; i < count; i++)	75	for (i = 0; i < count; i++)
75	putchar(data[i]);	76	putchar(data[i]);
76	free(data);	77	free(data);
77		78
78	return count;	79	return count;
79	}	80	}
80		81
-		82	/** Tell kernel to get keyboard/console access again */
-		83	static __native sys_debug_enable_console(void)
-		84	{
-		85	arch_grab_console();
-		86	return 0;
-		87	}
-		88
81	/** Dispatch system call */	89	/** Dispatch system call */
82	__native syscall_handler(__native a1, __native a2, __native a3,	90	__native syscall_handler(__native a1, __native a2, __native a3,
83	__native a4, __native id)	91	__native a4, __native id)
84	{	92	{
85	if (id < SYSCALL_END)	93	if (id < SYSCALL_END)
86	return syscall_table[id](a1,a2,a3,a4);	94	return syscall_table[id](a1,a2,a3,a4);
87	else	95	else
88	panic("Undefined syscall %d", id);	96	panic("Undefined syscall %d", id);
89	}	97	}
90		98
91	syshandler_t syscall_table[SYSCALL_END] = {	99	syshandler_t syscall_table[SYSCALL_END] = {
92	sys_io,	100	sys_io,
93	sys_tls_set,	101	sys_tls_set,
94		102
95	/* Thread and task related syscalls. */	103	/* Thread and task related syscalls. */
96	sys_thread_create,	104	sys_thread_create,
97	sys_thread_exit,	105	sys_thread_exit,
98	sys_task_get_id,	106	sys_task_get_id,
99		107
100	/* Synchronization related syscalls. */	108	/* Synchronization related syscalls. */
101	sys_futex_sleep_timeout,	109	sys_futex_sleep_timeout,
102	sys_futex_wakeup,	110	sys_futex_wakeup,
103		111
104	/* Address space related syscalls. */	112	/* Address space related syscalls. */
105	sys_as_area_create,	113	sys_as_area_create,
106	sys_as_area_resize,	114	sys_as_area_resize,
107	sys_as_area_destroy,	115	sys_as_area_destroy,
108		116
109	/* IPC related syscalls. */	117	/* IPC related syscalls. */
110	sys_ipc_call_sync_fast,	118	sys_ipc_call_sync_fast,
111	sys_ipc_call_sync,	119	sys_ipc_call_sync,
112	sys_ipc_call_async_fast,	120	sys_ipc_call_async_fast,
113	sys_ipc_call_async,	121	sys_ipc_call_async,
114	sys_ipc_answer_fast,	122	sys_ipc_answer_fast,
115	sys_ipc_answer,	123	sys_ipc_answer,
116	sys_ipc_forward_fast,	124	sys_ipc_forward_fast,
117	sys_ipc_wait_for_call,	125	sys_ipc_wait_for_call,
118	sys_ipc_hangup,	126	sys_ipc_hangup,
119	sys_ipc_register_irq,	127	sys_ipc_register_irq,
120	sys_ipc_unregister_irq,	128	sys_ipc_unregister_irq,
121		129
122	/* Capabilities related syscalls. */	130	/* Capabilities related syscalls. */
123	sys_cap_grant,	131	sys_cap_grant,
124	sys_cap_revoke,	132	sys_cap_revoke,
125		133
126	/* DDI related syscalls. */	134	/* DDI related syscalls. */
127	sys_physmem_map,	135	sys_physmem_map,
128	sys_iospace_enable,	136	sys_iospace_enable,
129	sys_preempt_control,	137	sys_preempt_control,
130		138
131	/* Sysinfo syscalls */	139	/* Sysinfo syscalls */
132	sys_sysinfo_valid,	140	sys_sysinfo_valid,
133	sys_sysinfo_value	141	sys_sysinfo_value,
-		142
-		143	/* Debug calls */
-		144	sys_debug_enable_console
134	};	145	};
135		146

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/syscall/syscall.c @ 1448 – Rev 1448 → 1474