WebSVN – HelenOS-historic – Diff – /uspace/trunk/libc/generic/io/stream.c


/*
 * Copyright (C) 2006 Josef Cejka
 * Copyright (C) 2006 Jakub Vana
 * 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 libc
 * @{
 */
/** @file
 */
 
 
#include <io/io.h>
#include <io/stream.h>
#include <string.h>
#include <malloc.h>
#include <libc.h>
#include <ipc/ipc.h>
#include <ipc/ns.h>
#include <ipc/fb.h>
#include <ipc/services.h>
#include <console.h>
#include <unistd.h>
#include <async.h>
 
#define FDS 32
 
typedef struct stream_t {
    pwritefn_t w;
    preadfn_t r;
    void * param;
    int phone;
} stream_t;
 
static int console_phone = -1;
static stream_t streams[FDS];
 
static ssize_t write_stderr(void *param, const void *buf, size_t count)
{
    return count;
}
 
static ssize_t read_stdin(void *param, void *buf, size_t count)
{
    ipcarg_t r0,r1;
    size_t i = 0;
 
    while (i < count) {
        if (async_req_2(streams[0].phone, CONSOLE_GETCHAR, 0, 0, &r0, &r1) < 0) {
            return -1;
        }
        ((char *)buf)[i++] = r0;
    }
    return i;
}
 
static ssize_t write_stdout(void *param, const void *buf, size_t count)
{
    int i;
    ipcarg_t r0,r1;
 
    for (i = 0; i < count; i++)
        async_msg(streams[1].phone, CONSOLE_PUTCHAR, ((const char *)buf)[i]);
   
    return count;
}
 
 
 
static stream_t open_stdin(void)
{
    stream_t stream;
    int phoneid;
    int res;
   
    if (console_phone < 0) {
        while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
            usleep(10000);
        }
    }
   
    stream.r = read_stdin;
    stream.param = 0;
    stream.phone = console_phone;
   
    return stream;
}
 
static stream_t open_stdout(void)
{
    stream_t stream;
    int res;
 
    if (console_phone < 0) {
        while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
            usleep(10000);
        }
    }
   
    stream.w = write_stdout;
    stream.phone = console_phone;
    stream.param = 0;
    return stream;
}
 
static ssize_t write_null(void *param, const void *buf, size_t count)
{
    return count;
}
 
 
fd_t open(const char *fname, int flags)
{
    int c = 0;
 
    while (((streams[c].w) || (streams[c].r)) && (c < FDS))
        c++;
    if (c == FDS)
        return EMFILE;
   
    if (!strcmp(fname, "stdin")) {
        streams[c] = open_stdin();
        return c;
    }
   
    if (!strcmp(fname, "stdout")) {
        streams[c] = open_stdout();
        return c;
    }
   
    if (!strcmp(fname, "stderr")) {
        streams[c].w = write_stderr;
        return c;
    }
    if (!strcmp(fname, "null")) {
        streams[c].w = write_null;
        return c;
    }
}
 
 
ssize_t write(int fd, const void *buf, size_t count)
{
//  __SYSCALL3(SYS_IO, 1, (sysarg_t)buf, (sysarg_t) count);
//  return count;
    if (fd < FDS)
        return streams[fd].w(streams[fd].param, buf, count);
   
    return 0;
}
 
ssize_t read(int fd, void *buf, size_t count)
{
    if (fd < FDS)
        return streams[fd].r(streams[fd].param, buf, count);
   
    return 0;
}
 
int get_fd_phone(int fd)
{
    if (fd >= FDS || fd < 0)
        return -1;
    return streams[fd].phone;
}
 
 
 /** @}
 */
 
 
 

Rev 1610	Rev 1653
1	/*	1	/*
2	* Copyright (C) 2006 Josef Cejka	2	* Copyright (C) 2006 Josef Cejka
3	* Copyright (C) 2006 Jakub Vana	3	* Copyright (C) 2006 Jakub Vana
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
-		30	/** @addtogroup libc
-		31	* @{
-		32	*/
-		33	/** @file
-		34	*/
-		35
30		36
31	#include <io/io.h>	37	#include <io/io.h>
32	#include <io/stream.h>	38	#include <io/stream.h>
33	#include <string.h>	39	#include <string.h>
34	#include <malloc.h>	40	#include <malloc.h>
35	#include <libc.h>	41	#include <libc.h>
36	#include <ipc/ipc.h>	42	#include <ipc/ipc.h>
37	#include <ipc/ns.h>	43	#include <ipc/ns.h>
38	#include <ipc/fb.h>	44	#include <ipc/fb.h>
39	#include <ipc/services.h>	45	#include <ipc/services.h>
40	#include <console.h>	46	#include <console.h>
41	#include <unistd.h>	47	#include <unistd.h>
42	#include <async.h>	48	#include <async.h>
43		49
44	#define FDS 32	50	#define FDS 32
45		51
46	typedef struct stream_t {	52	typedef struct stream_t {
47	pwritefn_t w;	53	pwritefn_t w;
48	preadfn_t r;	54	preadfn_t r;
49	void * param;	55	void * param;
50	int phone;	56	int phone;
51	} stream_t;	57	} stream_t;
52		58
53	static int console_phone = -1;	59	static int console_phone = -1;
54	static stream_t streams[FDS];	60	static stream_t streams[FDS];
55		61
56	static ssize_t write_stderr(void param, const void buf, size_t count)	62	static ssize_t write_stderr(void param, const void buf, size_t count)
57	{	63	{
58	return count;	64	return count;
59	}	65	}
60		66
61	static ssize_t read_stdin(void param, void buf, size_t count)	67	static ssize_t read_stdin(void param, void buf, size_t count)
62	{	68	{
63	ipcarg_t r0,r1;	69	ipcarg_t r0,r1;
64	size_t i = 0;	70	size_t i = 0;
65		71
66	while (i < count) {	72	while (i < count) {
67	if (async_req_2(streams[0].phone, CONSOLE_GETCHAR, 0, 0, &r0, &r1) < 0) {	73	if (async_req_2(streams[0].phone, CONSOLE_GETCHAR, 0, 0, &r0, &r1) < 0) {
68	return -1;	74	return -1;
69	}	75	}
70	((char *)buf)[i++] = r0;	76	((char *)buf)[i++] = r0;
71	}	77	}
72	return i;	78	return i;
73	}	79	}
74		80
75	static ssize_t write_stdout(void param, const void buf, size_t count)	81	static ssize_t write_stdout(void param, const void buf, size_t count)
76	{	82	{
77	int i;	83	int i;
78	ipcarg_t r0,r1;	84	ipcarg_t r0,r1;
79		85
80	for (i = 0; i < count; i++)	86	for (i = 0; i < count; i++)
81	async_msg(streams[1].phone, CONSOLE_PUTCHAR, ((const char *)buf)[i]);	87	async_msg(streams[1].phone, CONSOLE_PUTCHAR, ((const char *)buf)[i]);
82		88
83	return count;	89	return count;
84	}	90	}
85		91
86		92
87		93
88	static stream_t open_stdin(void)	94	static stream_t open_stdin(void)
89	{	95	{
90	stream_t stream;	96	stream_t stream;
91	int phoneid;	97	int phoneid;
92	int res;	98	int res;
93		99
94	if (console_phone < 0) {	100	if (console_phone < 0) {
95	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {	101	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
96	usleep(10000);	102	usleep(10000);
97	}	103	}
98	}	104	}
99		105
100	stream.r = read_stdin;	106	stream.r = read_stdin;
101	stream.param = 0;	107	stream.param = 0;
102	stream.phone = console_phone;	108	stream.phone = console_phone;
103		109
104	return stream;	110	return stream;
105	}	111	}
106		112
107	static stream_t open_stdout(void)	113	static stream_t open_stdout(void)
108	{	114	{
109	stream_t stream;	115	stream_t stream;
110	int res;	116	int res;
111		117
112	if (console_phone < 0) {	118	if (console_phone < 0) {
113	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {	119	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
114	usleep(10000);	120	usleep(10000);
115	}	121	}
116	}	122	}
117		123
118	stream.w = write_stdout;	124	stream.w = write_stdout;
119	stream.phone = console_phone;	125	stream.phone = console_phone;
120	stream.param = 0;	126	stream.param = 0;
121	return stream;	127	return stream;
122	}	128	}
123		129
124	static ssize_t write_null(void param, const void buf, size_t count)	130	static ssize_t write_null(void param, const void buf, size_t count)
125	{	131	{
126	return count;	132	return count;
127	}	133	}
128		134
129		135
130	fd_t open(const char *fname, int flags)	136	fd_t open(const char *fname, int flags)
131	{	137	{
132	int c = 0;	138	int c = 0;
133		139
134	while (((streams[c].w) \|\| (streams[c].r)) && (c < FDS))	140	while (((streams[c].w) \|\| (streams[c].r)) && (c < FDS))
135	c++;	141	c++;
136	if (c == FDS)	142	if (c == FDS)
137	return EMFILE;	143	return EMFILE;
138		144
139	if (!strcmp(fname, "stdin")) {	145	if (!strcmp(fname, "stdin")) {
140	streams[c] = open_stdin();	146	streams[c] = open_stdin();
141	return c;	147	return c;
142	}	148	}
143		149
144	if (!strcmp(fname, "stdout")) {	150	if (!strcmp(fname, "stdout")) {
145	streams[c] = open_stdout();	151	streams[c] = open_stdout();
146	return c;	152	return c;
147	}	153	}
148		154
149	if (!strcmp(fname, "stderr")) {	155	if (!strcmp(fname, "stderr")) {
150	streams[c].w = write_stderr;	156	streams[c].w = write_stderr;
151	return c;	157	return c;
152	}	158	}
153	if (!strcmp(fname, "null")) {	159	if (!strcmp(fname, "null")) {
154	streams[c].w = write_null;	160	streams[c].w = write_null;
155	return c;	161	return c;
156	}	162	}
157	}	163	}
158		164
159		165
160	ssize_t write(int fd, const void *buf, size_t count)	166	ssize_t write(int fd, const void *buf, size_t count)
161	{	167	{
162	// __SYSCALL3(SYS_IO, 1, (sysarg_t)buf, (sysarg_t) count);	168	// __SYSCALL3(SYS_IO, 1, (sysarg_t)buf, (sysarg_t) count);
163	// return count;	169	// return count;
164	if (fd < FDS)	170	if (fd < FDS)
165	return streams[fd].w(streams[fd].param, buf, count);	171	return streams[fd].w(streams[fd].param, buf, count);
166		172
167	return 0;	173	return 0;
168	}	174	}
169		175
170	ssize_t read(int fd, void *buf, size_t count)	176	ssize_t read(int fd, void *buf, size_t count)
171	{	177	{
172	if (fd < FDS)	178	if (fd < FDS)
173	return streams[fd].r(streams[fd].param, buf, count);	179	return streams[fd].r(streams[fd].param, buf, count);
174		180
175	return 0;	181	return 0;
176	}	182	}
177		183
178	int get_fd_phone(int fd)	184	int get_fd_phone(int fd)
179	{	185	{
180	if (fd >= FDS \|\| fd < 0)	186	if (fd >= FDS \|\| fd < 0)
181	return -1;	187	return -1;
182	return streams[fd].phone;	188	return streams[fd].phone;
183	}	189	}
-		190
-		191
-		192	/** @}
-		193	*/
-		194
-		195
184		196

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/libc/generic/io/stream.c – Rev 1610 → 1653