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.
 */
 
 
#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] = {{0, 0, 0, -1}};
 
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 (sync_send_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++)
        send_call(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.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)
{
    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 1518	Rev 1519
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		30
31	#include <io/io.h>	31	#include <io/io.h>
32	#include <io/stream.h>	32	#include <io/stream.h>
33	#include <string.h>	33	#include <string.h>
34	#include <malloc.h>	34	#include <malloc.h>
35	#include <libc.h>	35	#include <libc.h>
36	#include <ipc/ipc.h>	36	#include <ipc/ipc.h>
37	#include <ipc/ns.h>	37	#include <ipc/ns.h>
38	#include <ipc/fb.h>	38	#include <ipc/fb.h>
39	#include <ipc/services.h>	39	#include <ipc/services.h>
40	#include <console.h>	40	#include <console.h>
41	#include <unistd.h>	41	#include <unistd.h>
-		42	#include <async.h>
42		43
43	#define FDS 32	44	#define FDS 32
44		45
45	typedef struct stream_t {	46	typedef struct stream_t {
46	pwritefn_t w;	47	pwritefn_t w;
47	preadfn_t r;	48	preadfn_t r;
48	void * param;	49	void * param;
-		50	int phone;
49	} stream_t;	51	} stream_t;
50		52
51	int console_phone = -1;	53	static int console_phone = -1;
52		-
53	stream_t streams[FDS] = {{0, 0, 0}};	54	static stream_t streams[FDS] = {{0, 0, 0, -1}};
54		55
55	static ssize_t write_stderr(void param, const void buf, size_t count)	56	static ssize_t write_stderr(void param, const void buf, size_t count)
56	{	57	{
57	return count;	58	return count;
58	}	59	}
59		60
60	static ssize_t read_stdin(void param, void buf, size_t count)	61	static ssize_t read_stdin(void param, void buf, size_t count)
61	{	62	{
62	ipcarg_t r0,r1;	63	ipcarg_t r0,r1;
63	size_t i = 0;	64	size_t i = 0;
64		65
65	while (i < count) {	66	while (i < count) {
66	if (ipc_call_sync_2(console_phone, CONSOLE_GETCHAR, 0, 0, &r0, &r1) < 0) {	67	if (sync_send_2(streams[0].phone, CONSOLE_GETCHAR, 0, 0, &r0, &r1) < 0) {
67	return -1;	68	return -1;
68	}	69	}
69	((char *)buf)[i++] = r0;	70	((char *)buf)[i++] = r0;
70	}	71	}
71	return i;	72	return i;
72	}	73	}
73		74
74	static ssize_t write_stdout(void param, const void buf, size_t count)	75	static ssize_t write_stdout(void param, const void buf, size_t count)
75	{	76	{
76	int i;	77	int i;
77	ipcarg_t r0,r1;	78	ipcarg_t r0,r1;
78		79
79	for (i = 0; i < count; i++)	80	for (i = 0; i < count; i++)
80	send_call(console_phone, CONSOLE_PUTCHAR, ((const char *)buf)[i]);	81	send_call(streams[1].phone, CONSOLE_PUTCHAR, ((const char *)buf)[i]);
81		82
82	return count;	83	return count;
83	}	84	}
84		85
85		86
86		87
87	static stream_t open_stdin(void)	88	static stream_t open_stdin(void)
88	{	89	{
89	stream_t stream;	90	stream_t stream;
90	int phoneid;	91	int phoneid;
91	int res;	92	int res;
92		93
93	if (console_phone < 0) {	94	if (console_phone < 0) {
94	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {	95	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
95	usleep(10000);	96	usleep(10000);
96	}	97	}
97	}	98	}
98		99
99	stream.r = read_stdin;	100	stream.r = read_stdin;
100	stream.param = 0;	101	stream.param = 0;
-		102	stream.phone = console_phone;
-		103
101	return stream;	104	return stream;
102	}	105	}
103		106
104	static stream_t open_stdout(void)	107	static stream_t open_stdout(void)
105	{	108	{
106	stream_t stream;	109	stream_t stream;
107	int res;	110	int res;
108		111
109	if (console_phone < 0) {	112	if (console_phone < 0) {
110	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {	113	while ((console_phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0)) < 0) {
111	usleep(10000);	114	usleep(10000);
112	}	115	}
113	}	116	}
114		117
115	stream.w = write_stdout;	118	stream.w = write_stdout;
116	stream.param = 0;	119	stream.param = 0;
117	return stream;	120	return stream;
118	}	121	}
119		122
120	static ssize_t write_null(void param, const void buf, size_t count)	123	static ssize_t write_null(void param, const void buf, size_t count)
121	{	124	{
122	return count;	125	return count;
123	}	126	}
124		127
125		128
126	fd_t open(const char *fname, int flags)	129	fd_t open(const char *fname, int flags)
127	{	130	{
128	int c = 0;	131	int c = 0;
129		132
130	while (((streams[c].w) \|\| (streams[c].r)) && (c < FDS))	133	while (((streams[c].w) \|\| (streams[c].r)) && (c < FDS))
131	c++;	134	c++;
132	if (c == FDS)	135	if (c == FDS)
133	return EMFILE;	136	return EMFILE;
134		137
135	if (!strcmp(fname, "stdin")) {	138	if (!strcmp(fname, "stdin")) {
136	streams[c] = open_stdin();	139	streams[c] = open_stdin();
137	return c;	140	return c;
138	}	141	}
139		142
140	if (!strcmp(fname, "stdout")) {	143	if (!strcmp(fname, "stdout")) {
141	//streams[c].w = write_stdout;	-
142	//return c;	-
143	streams[c] = open_stdout();	144	streams[c] = open_stdout();
144	return c;	145	return c;
145	}	146	}
146		147
147	if (!strcmp(fname, "stderr")) {	148	if (!strcmp(fname, "stderr")) {
148	streams[c].w = write_stderr;	149	streams[c].w = write_stderr;
149	return c;	150	return c;
150	}	151	}
151	if (!strcmp(fname, "null")) {	152	if (!strcmp(fname, "null")) {
152	streams[c].w = write_null;	153	streams[c].w = write_null;
153	return c;	154	return c;
154	}	155	}
155	}	156	}
156		157
157		158
158	ssize_t write(int fd, const void *buf, size_t count)	159	ssize_t write(int fd, const void *buf, size_t count)
159	{	160	{
160	if (fd < FDS)	161	if (fd < FDS)
161	return streams[fd].w(streams[fd].param, buf, count);	162	return streams[fd].w(streams[fd].param, buf, count);
162		163
163	return 0;	164	return 0;
164	}	165	}
165		166
166	ssize_t read(int fd, void *buf, size_t count)	167	ssize_t read(int fd, void *buf, size_t count)
167	{	168	{
168	if (fd < FDS)	169	if (fd < FDS)
169	return streams[fd].r(streams[fd].param, buf, count);	170	return streams[fd].r(streams[fd].param, buf, count);
170		171
171	return 0;	172	return 0;
172	}	173	}
173		174
-		175	int get_fd_phone(int fd)
-		176	{
-		177	if (fd >= FDS \|\| fd < 0)
-		178	return -1;
-		179	return streams[fd].phone;
-		180	}
174		181

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/libc/generic/io/stream.c – Rev 1518 → 1519