WebSVN – HelenOS – Diff – /trunk/uspace/lib/libc/generic/io/io.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 libc
 * @{
 */
/** @file
 */
 
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <bool.h>
#include <malloc.h>
#include <io/klog.h>
#include <vfs/vfs.h>
#include <ipc/devmap.h>
 
FILE stdin_null = {
    .fd = -1,
    .error = true,
    .eof = true,
    .klog = false,
    .phone = -1
};
 
FILE stdout_klog = {
    .fd = -1,
    .error = false,
    .eof = false,
    .klog = true,
    .phone = -1
};
 
FILE *stdin = &stdin_null;
FILE *stdout = &stdout_klog;
FILE *stderr = &stdout_klog;
 
static bool parse_mode(const char *mode, int *flags)
{
    /* Parse mode except first character. */
    const char *mp = mode;
    if (*mp++ == 0) {
        errno = EINVAL;
        return false;
    }
   
    if ((*mp == 'b') || (*mp == 't'))
        mp++;
   
    bool plus;
    if (*mp == '+') {
        mp++;
        plus = true;
    } else
        plus = false;
   
    if (*mp != 0) {
        errno = EINVAL;
        return false;
    }
   
    /* Parse first character of mode and determine flags for open(). */
    switch (mode[0]) {
    case 'r':
        *flags = plus ? O_RDWR : O_RDONLY;
        break;
    case 'w':
        *flags = (O_TRUNC | O_CREAT) | (plus ? O_RDWR : O_WRONLY);
        break;
    case 'a':
        /* TODO: a+ must read from beginning, append to the end. */
        if (plus) {
            errno = ENOTSUP;
            return false;
        }
        *flags = (O_APPEND | O_CREAT) | (plus ? O_RDWR : O_WRONLY);
    default:
        errno = EINVAL;
        return false;
    }
   
    return true;
}
 
/** Open a stream.
 *
 * @param path Path of the file to open.
 * @param mode Mode string, (r|w|a)[b|t][+].
 *
 */
FILE *fopen(const char *path, const char *mode)
{
    int flags;
    if (!parse_mode(mode, &flags))
        return NULL;
   
    /* Open file. */
    FILE *stream = malloc(sizeof(FILE));
    if (stream == NULL) {
        errno = ENOMEM;
        return NULL;
    }
   
    stream->fd = open(path, flags, 0666);
    if (stream->fd < 0) {
        /* errno was set by open() */
        free(stream);
        return NULL;
    }
   
    stream->error = false;
    stream->eof = false;
    stream->klog = false;
    stream->phone = -1;
   
    return stream;
}
 
FILE *fopen_node(fdi_node_t *node, const char *mode)
{
    int flags;
    if (!parse_mode(mode, &flags))
        return NULL;
   
    /* Open file. */
    FILE *stream = malloc(sizeof(FILE));
    if (stream == NULL) {
        errno = ENOMEM;
        return NULL;
    }
   
    stream->fd = open_node(node, flags);
    if (stream->fd < 0) {
        /* errno was set by open_node() */
        free(stream);
        return NULL;
    }
   
    stream->error = false;
    stream->eof = false;
    stream->klog = false;
    stream->phone = -1;
   
    return stream;
}
 
int fclose(FILE *stream)
{
    int rc = 0;
   
    fflush(stream);
   
    if (stream->phone >= 0)
        ipc_hangup(stream->phone);
   
    if (stream->fd >= 0)
        rc = close(stream->fd);
   
    if ((stream != &stdin_null) && (stream != &stdout_klog))
        free(stream);
   
    stream = NULL;
   
    if (rc != 0) {
        /* errno was set by close() */
        return EOF;
    }
   
    return 0;
}
 
/** Read from a stream.
 *
 * @param buf    Destination buffer.
 * @param size   Size of each record.
 * @param nmemb  Number of records to read.
 * @param stream Pointer to the stream.
 *
 */
size_t fread(void *buf, size_t size, size_t nmemb, FILE *stream)
{
    size_t left = size * nmemb;
    size_t done = 0;
   
    while ((left > 0) && (!stream->error) && (!stream->eof)) {
        ssize_t rd = read(stream->fd, buf + done, left);
       
        if (rd < 0)
            stream->error = true;
        else if (rd == 0)
            stream->eof = true;
        else {
            left -= rd;
            done += rd;
        }
    }
   
    return (done / size);
}
 
/** Write to a stream.
 *
 * @param buf    Source buffer.
 * @param size   Size of each record.
 * @param nmemb  Number of records to write.
 * @param stream Pointer to the stream.
 *
 */
size_t fwrite(const void *buf, size_t size, size_t nmemb, FILE *stream)
{
    size_t left = size * nmemb;
    size_t done = 0;
   
    while ((left > 0) && (!stream->error)) {
        ssize_t wr;
       
        if (stream->klog)
            wr = klog_write(buf + done, left);
        else
            wr = write(stream->fd, buf + done, left);
       
        if (wr <= 0)
            stream->error = true;
        else {
            left -= wr;
            done += wr;
        }
    }
   
    return (done / size);
}
 
int fputc(wchar_t c, FILE *stream)
{
    char buf[STR_BOUNDS(1)];
    size_t sz = 0;
   
    if (chr_encode(c, buf, &sz, STR_BOUNDS(1)) == EOK) {
        size_t wr = fwrite(buf, sz, 1, stream);
       
        if (wr < sz)
            return EOF;
       
        return (int) c;
    }
   
    return EOF;
}
 
int putchar(wchar_t c)
{
    return fputc(c, stdout);
}
 
int fputs(const char *str, FILE *stream)
{
    return fwrite(str, str_size(str), 1, stream);
}
 
int puts(const char *str)
{
    return fputs(str, stdout);
}
 
int fgetc(FILE *stream)
{
    char c;
   
    if (fread(&c, sizeof(char), 1, stream) < sizeof(char))
        return EOF;
   
    return (int) c;
}
 
int getchar(void)
{
    return fgetc(stdin);
}
 
int fseek(FILE *stream, long offset, int origin)
{
    off_t rc = lseek(stream->fd, offset, origin);
    if (rc == (off_t) (-1)) {
        /* errno has been set by lseek. */
        return -1;
    }
   
    stream->eof = false;
   
    return 0;
}
 
int fflush(FILE *stream)
{
    if (stream->klog) {
        klog_update();
        return EOK;
    }
   
    if (stream->fd >= 0)
        return fsync(stream->fd);
   
    return ENOENT;
}
 
int feof(FILE *stream)
{
    return stream->eof;
}
 
int ferror(FILE *stream)
{
    return stream->error;
}
 
int fphone(FILE *stream)
{
    if (stream->fd >= 0) {
        if (stream->phone < 0)
            stream->phone = fd_phone(stream->fd);
       
        return stream->phone;
    }
   
    return -1;
}
 
void fnode(FILE *stream, fdi_node_t *node)
{
    if (stream->fd >= 0) {
        fd_node(stream->fd, node);
    } else {
        node->fs_handle = 0;
        node->dev_handle = 0;
        node->index = 0;
    }
}
 
/** @}
 */
 

Rev 4491	Rev 4492
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 libc	29	/** @addtogroup libc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <stdio.h>	35	#include <stdio.h>
36	#include <unistd.h>	36	#include <unistd.h>
37	#include <fcntl.h>	37	#include <fcntl.h>
38	#include <string.h>	38	#include <string.h>
39	#include <errno.h>	39	#include <errno.h>
40	#include <bool.h>	40	#include <bool.h>
41	#include <malloc.h>	41	#include <malloc.h>
42	#include <io/klog.h>	42	#include <io/klog.h>
43	#include <vfs/vfs.h>	43	#include <vfs/vfs.h>
44	#include <ipc/devmap.h>	44	#include <ipc/devmap.h>
45		45
46	FILE stdin_null = {	46	FILE stdin_null = {
47	.fd = -1,	47	.fd = -1,
48	.error = true,	48	.error = true,
49	.eof = true,	49	.eof = true,
50	.klog = false,	50	.klog = false,
51	.phone = -1	51	.phone = -1
52	};	52	};
53		53
54	FILE stdout_klog = {	54	FILE stdout_klog = {
55	.fd = -1,	55	.fd = -1,
56	.error = false,	56	.error = false,
57	.eof = false,	57	.eof = false,
58	.klog = true,	58	.klog = true,
59	.phone = -1	59	.phone = -1
60	};	60	};
61		61
62	FILE *stdin = &stdin_null;	62	FILE *stdin = &stdin_null;
63	FILE *stdout = &stdout_klog;	63	FILE *stdout = &stdout_klog;
64	FILE *stderr = &stdout_klog;	64	FILE *stderr = &stdout_klog;
65		65
66	static bool parse_mode(const char mode, int flags)	66	static bool parse_mode(const char mode, int flags)
67	{	67	{
68	/* Parse mode except first character. */	68	/* Parse mode except first character. */
69	const char *mp = mode;	69	const char *mp = mode;
70	if (*mp++ == 0) {	70	if (*mp++ == 0) {
71	errno = EINVAL;	71	errno = EINVAL;
72	return false;	72	return false;
73	}	73	}
74		74
75	if ((mp == 'b') \|\| (mp == 't'))	75	if ((mp == 'b') \|\| (mp == 't'))
76	mp++;	76	mp++;
77		77
78	bool plus;	78	bool plus;
79	if (*mp == '+') {	79	if (*mp == '+') {
80	mp++;	80	mp++;
81	plus = true;	81	plus = true;
82	} else	82	} else
83	plus = false;	83	plus = false;
84		84
85	if (*mp != 0) {	85	if (*mp != 0) {
86	errno = EINVAL;	86	errno = EINVAL;
87	return false;	87	return false;
88	}	88	}
89		89
90	/* Parse first character of mode and determine flags for open(). */	90	/* Parse first character of mode and determine flags for open(). */
91	switch (mode[0]) {	91	switch (mode[0]) {
92	case 'r':	92	case 'r':
93	*flags = plus ? O_RDWR : O_RDONLY;	93	*flags = plus ? O_RDWR : O_RDONLY;
94	break;	94	break;
95	case 'w':	95	case 'w':
96	*flags = (O_TRUNC \| O_CREAT) \| (plus ? O_RDWR : O_WRONLY);	96	*flags = (O_TRUNC \| O_CREAT) \| (plus ? O_RDWR : O_WRONLY);
97	break;	97	break;
98	case 'a':	98	case 'a':
99	/* TODO: a+ must read from beginning, append to the end. */	99	/* TODO: a+ must read from beginning, append to the end. */
100	if (plus) {	100	if (plus) {
101	errno = ENOTSUP;	101	errno = ENOTSUP;
102	return false;	102	return false;
103	}	103	}
104	*flags = (O_APPEND \| O_CREAT) \| (plus ? O_RDWR : O_WRONLY);	104	*flags = (O_APPEND \| O_CREAT) \| (plus ? O_RDWR : O_WRONLY);
105	default:	105	default:
106	errno = EINVAL;	106	errno = EINVAL;
107	return false;	107	return false;
108	}	108	}
109		109
110	return true;	110	return true;
111	}	111	}
112		112
113	/** Open a stream.	113	/** Open a stream.
114	*	114	*
115	* @param path Path of the file to open.	115	* @param path Path of the file to open.
116	* @param mode Mode string, (r\|w\|a)[b\|t][+].	116	* @param mode Mode string, (r\|w\|a)[b\|t][+].
117	*	117	*
118	*/	118	*/
119	FILE fopen(const char path, const char *mode)	119	FILE fopen(const char path, const char *mode)
120	{	120	{
121	int flags;	121	int flags;
122	if (!parse_mode(mode, &flags))	122	if (!parse_mode(mode, &flags))
123	return NULL;	123	return NULL;
124		124
125	/* Open file. */	125	/* Open file. */
126	FILE *stream = malloc(sizeof(FILE));	126	FILE *stream = malloc(sizeof(FILE));
127	if (stream == NULL) {	127	if (stream == NULL) {
128	errno = ENOMEM;	128	errno = ENOMEM;
129	return NULL;	129	return NULL;
130	}	130	}
131		131
132	stream->fd = open(path, flags, 0666);	132	stream->fd = open(path, flags, 0666);
133	if (stream->fd < 0) {	133	if (stream->fd < 0) {
134	/* errno was set by open() */	134	/* errno was set by open() */
135	free(stream);	135	free(stream);
136	return NULL;	136	return NULL;
137	}	137	}
138		138
139	stream->error = false;	139	stream->error = false;
140	stream->eof = false;	140	stream->eof = false;
141	stream->klog = false;	141	stream->klog = false;
142	stream->phone = -1;	142	stream->phone = -1;
143		143
144	return stream;	144	return stream;
145	}	145	}
146		146
147	FILE fopen_node(inode_t node, const char *mode)	147	FILE fopen_node(fdi_node_t node, const char *mode)
148	{	148	{
149	int flags;	149	int flags;
150	if (!parse_mode(mode, &flags))	150	if (!parse_mode(mode, &flags))
151	return NULL;	151	return NULL;
152		152
153	/* Open file. */	153	/* Open file. */
154	FILE *stream = malloc(sizeof(FILE));	154	FILE *stream = malloc(sizeof(FILE));
155	if (stream == NULL) {	155	if (stream == NULL) {
156	errno = ENOMEM;	156	errno = ENOMEM;
157	return NULL;	157	return NULL;
158	}	158	}
159		159
160	stream->fd = open_node(node, flags);	160	stream->fd = open_node(node, flags);
161	if (stream->fd < 0) {	161	if (stream->fd < 0) {
162	/* errno was set by open_node() */	162	/* errno was set by open_node() */
163	free(stream);	163	free(stream);
164	return NULL;	164	return NULL;
165	}	165	}
166		166
167	stream->error = false;	167	stream->error = false;
168	stream->eof = false;	168	stream->eof = false;
169	stream->klog = false;	169	stream->klog = false;
170	stream->phone = -1;	170	stream->phone = -1;
171		171
172	return stream;	172	return stream;
173	}	173	}
174		174
175	int fclose(FILE *stream)	175	int fclose(FILE *stream)
176	{	176	{
177	int rc = 0;	177	int rc = 0;
178		178
179	fflush(stream);	179	fflush(stream);
180		180
181	if (stream->phone >= 0)	181	if (stream->phone >= 0)
182	ipc_hangup(stream->phone);	182	ipc_hangup(stream->phone);
183		183
184	if (stream->fd >= 0)	184	if (stream->fd >= 0)
185	rc = close(stream->fd);	185	rc = close(stream->fd);
186		186
187	if ((stream != &stdin_null) && (stream != &stdout_klog))	187	if ((stream != &stdin_null) && (stream != &stdout_klog))
188	free(stream);	188	free(stream);
189		189
190	stream = NULL;	190	stream = NULL;
191		191
192	if (rc != 0) {	192	if (rc != 0) {
193	/* errno was set by close() */	193	/* errno was set by close() */
194	return EOF;	194	return EOF;
195	}	195	}
196		196
197	return 0;	197	return 0;
198	}	198	}
199		199
200	/** Read from a stream.	200	/** Read from a stream.
201	*	201	*
202	* @param buf Destination buffer.	202	* @param buf Destination buffer.
203	* @param size Size of each record.	203	* @param size Size of each record.
204	* @param nmemb Number of records to read.	204	* @param nmemb Number of records to read.
205	* @param stream Pointer to the stream.	205	* @param stream Pointer to the stream.
206	*	206	*
207	*/	207	*/
208	size_t fread(void buf, size_t size, size_t nmemb, FILE stream)	208	size_t fread(void buf, size_t size, size_t nmemb, FILE stream)
209	{	209	{
210	size_t left = size * nmemb;	210	size_t left = size * nmemb;
211	size_t done = 0;	211	size_t done = 0;
212		212
213	while ((left > 0) && (!stream->error) && (!stream->eof)) {	213	while ((left > 0) && (!stream->error) && (!stream->eof)) {
214	ssize_t rd = read(stream->fd, buf + done, left);	214	ssize_t rd = read(stream->fd, buf + done, left);
215		215
216	if (rd < 0)	216	if (rd < 0)
217	stream->error = true;	217	stream->error = true;
218	else if (rd == 0)	218	else if (rd == 0)
219	stream->eof = true;	219	stream->eof = true;
220	else {	220	else {
221	left -= rd;	221	left -= rd;
222	done += rd;	222	done += rd;
223	}	223	}
224	}	224	}
225		225
226	return (done / size);	226	return (done / size);
227	}	227	}
228		228
229	/** Write to a stream.	229	/** Write to a stream.
230	*	230	*
231	* @param buf Source buffer.	231	* @param buf Source buffer.
232	* @param size Size of each record.	232	* @param size Size of each record.
233	* @param nmemb Number of records to write.	233	* @param nmemb Number of records to write.
234	* @param stream Pointer to the stream.	234	* @param stream Pointer to the stream.
235	*	235	*
236	*/	236	*/
237	size_t fwrite(const void buf, size_t size, size_t nmemb, FILE stream)	237	size_t fwrite(const void buf, size_t size, size_t nmemb, FILE stream)
238	{	238	{
239	size_t left = size * nmemb;	239	size_t left = size * nmemb;
240	size_t done = 0;	240	size_t done = 0;
241		241
242	while ((left > 0) && (!stream->error)) {	242	while ((left > 0) && (!stream->error)) {
243	ssize_t wr;	243	ssize_t wr;
244		244
245	if (stream->klog)	245	if (stream->klog)
246	wr = klog_write(buf + done, left);	246	wr = klog_write(buf + done, left);
247	else	247	else
248	wr = write(stream->fd, buf + done, left);	248	wr = write(stream->fd, buf + done, left);
249		249
250	if (wr <= 0)	250	if (wr <= 0)
251	stream->error = true;	251	stream->error = true;
252	else {	252	else {
253	left -= wr;	253	left -= wr;
254	done += wr;	254	done += wr;
255	}	255	}
256	}	256	}
257		257
258	return (done / size);	258	return (done / size);
259	}	259	}
260		260
261	int fputc(wchar_t c, FILE *stream)	261	int fputc(wchar_t c, FILE *stream)
262	{	262	{
263	char buf[STR_BOUNDS(1)];	263	char buf[STR_BOUNDS(1)];
264	size_t sz = 0;	264	size_t sz = 0;
265		265
266	if (chr_encode(c, buf, &sz, STR_BOUNDS(1)) == EOK) {	266	if (chr_encode(c, buf, &sz, STR_BOUNDS(1)) == EOK) {
267	size_t wr = fwrite(buf, sz, 1, stream);	267	size_t wr = fwrite(buf, sz, 1, stream);
268		268
269	if (wr < sz)	269	if (wr < sz)
270	return EOF;	270	return EOF;
271		271
272	return (int) c;	272	return (int) c;
273	}	273	}
274		274
275	return EOF;	275	return EOF;
276	}	276	}
277		277
278	int putchar(wchar_t c)	278	int putchar(wchar_t c)
279	{	279	{
280	return fputc(c, stdout);	280	return fputc(c, stdout);
281	}	281	}
282		282
283	int fputs(const char str, FILE stream)	283	int fputs(const char str, FILE stream)
284	{	284	{
285	return fwrite(str, str_size(str), 1, stream);	285	return fwrite(str, str_size(str), 1, stream);
286	}	286	}
287		287
288	int puts(const char *str)	288	int puts(const char *str)
289	{	289	{
290	return fputs(str, stdout);	290	return fputs(str, stdout);
291	}	291	}
292		292
293	int fgetc(FILE *stream)	293	int fgetc(FILE *stream)
294	{	294	{
295	char c;	295	char c;
296		296
297	if (fread(&c, sizeof(char), 1, stream) < sizeof(char))	297	if (fread(&c, sizeof(char), 1, stream) < sizeof(char))
298	return EOF;	298	return EOF;
299		299
300	return (int) c;	300	return (int) c;
301	}	301	}
302		302
303	int getchar(void)	303	int getchar(void)
304	{	304	{
305	return fgetc(stdin);	305	return fgetc(stdin);
306	}	306	}
307		307
308	int fseek(FILE *stream, long offset, int origin)	308	int fseek(FILE *stream, long offset, int origin)
309	{	309	{
310	off_t rc = lseek(stream->fd, offset, origin);	310	off_t rc = lseek(stream->fd, offset, origin);
311	if (rc == (off_t) (-1)) {	311	if (rc == (off_t) (-1)) {
312	/* errno has been set by lseek. */	312	/* errno has been set by lseek. */
313	return -1;	313	return -1;
314	}	314	}
315		315
316	stream->eof = false;	316	stream->eof = false;
317		317
318	return 0;	318	return 0;
319	}	319	}
320		320
321	int fflush(FILE *stream)	321	int fflush(FILE *stream)
322	{	322	{
323	if (stream->klog) {	323	if (stream->klog) {
324	klog_update();	324	klog_update();
325	return EOK;	325	return EOK;
326	}	326	}
327		327
328	if (stream->fd >= 0)	328	if (stream->fd >= 0)
329	return fsync(stream->fd);	329	return fsync(stream->fd);
330		330
331	return ENOENT;	331	return ENOENT;
332	}	332	}
333		333
334	int feof(FILE *stream)	334	int feof(FILE *stream)
335	{	335	{
336	return stream->eof;	336	return stream->eof;
337	}	337	}
338		338
339	int ferror(FILE *stream)	339	int ferror(FILE *stream)
340	{	340	{
341	return stream->error;	341	return stream->error;
342	}	342	}
343		343
344	int fphone(FILE *stream)	344	int fphone(FILE *stream)
345	{	345	{
346	if (stream->fd >= 0) {	346	if (stream->fd >= 0) {
347	if (stream->phone < 0)	347	if (stream->phone < 0)
348	stream->phone = fd_phone(stream->fd);	348	stream->phone = fd_phone(stream->fd);
349		349
350	return stream->phone;	350	return stream->phone;
351	}	351	}
352		352
353	return -1;	353	return -1;
354	}	354	}
355		355
356	void fnode(FILE stream, inode_t node)	356	void fnode(FILE stream, fdi_node_t node)
357	{	357	{
358	if (stream->fd >= 0) {	358	if (stream->fd >= 0) {
359	fd_node(stream->fd, node);	359	fd_node(stream->fd, node);
360	} else {	360	} else {
361	node->fs_handle = 0;	361	node->fs_handle = 0;
362	node->dev_handle = 0;	362	node->dev_handle = 0;
363	node->index = 0;	363	node->index = 0;
364	}	364	}
365	}	365	}
366		366
367	/** @}	367	/** @}
368	*/	368	*/
369		369

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(root)/trunk/uspace/lib/libc/generic/io/io.c – Rev 4491 → 4492