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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libsndio/mio_rmidi.c	Lines:	0	70	0.0 %
Date:	2017-11-07	Branches:	0	56	0.0 %


/*	$OpenBSD: mio_rmidi.c,v 1.24 2016/01/09 08:27:24 ratchov Exp $	*/
/*
 * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "debug.h"
#include "mio_priv.h"

#define DEVPATH_PREFIX	"/dev/rmidi"
#define DEVPATH_MAX 	(1 +		\
	sizeof(DEVPATH_PREFIX) - 1 +	\
	sizeof(int) * 3)

struct mio_rmidi_hdl {
	struct mio_hdl mio;
	int fd;
};

static void mio_rmidi_close(struct mio_hdl *);
static size_t mio_rmidi_read(struct mio_hdl *, void *, size_t);
static size_t mio_rmidi_write(struct mio_hdl *, const void *, size_t);
static int mio_rmidi_nfds(struct mio_hdl *);
static int mio_rmidi_pollfd(struct mio_hdl *, struct pollfd *, int);
static int mio_rmidi_revents(struct mio_hdl *, struct pollfd *);

static struct mio_ops mio_rmidi_ops = {
	mio_rmidi_close,
	mio_rmidi_write,
	mio_rmidi_read,
	mio_rmidi_nfds,
	mio_rmidi_pollfd,
	mio_rmidi_revents
};

int
mio_rmidi_getfd(const char *str, unsigned int mode, int nbio)
{
	const char *p;
	char path[DEVPATH_MAX];
	unsigned int devnum;
	int fd, flags;

#ifdef DEBUG
	_sndio_debug_init();
#endif
	p = _sndio_parsetype(str, "rmidi");
	if (p == NULL) {
		DPRINTF("mio_rmidi_getfd: %s: \"rsnd\" expected\n", str);
		return -1;
	}
	switch (*p) {
	case '/':
		p++;
		break;
	default:
		DPRINTF("mio_rmidi_getfd: %s: '/' expected\n", str);
		return -1;
	}
	p = _sndio_parsenum(p, &devnum, 255);
	if (p == NULL || *p != '\0') {
		DPRINTF("mio_rmidi_getfd: %s: number expected after '/'\n", str);
		return -1;
	}
	snprintf(path, sizeof(path), DEVPATH_PREFIX "%u", devnum);
	if (mode == (MIO_IN | MIO_OUT))
		flags = O_RDWR;
	else
		flags = (mode & MIO_OUT) ? O_WRONLY : O_RDONLY;
	while ((fd = open(path, flags | O_NONBLOCK | O_CLOEXEC)) < 0) {
		if (errno == EINTR)
			continue;
		DPERROR(path);
		return -1;
	}
	return fd;
}

struct mio_hdl *
mio_rmidi_fdopen(int fd, unsigned int mode, int nbio)
{
	struct mio_rmidi_hdl *hdl;

#ifdef DEBUG
	_sndio_debug_init();
#endif
	hdl = malloc(sizeof(struct mio_rmidi_hdl));
	if (hdl == NULL)
		return NULL;
	_mio_create(&hdl->mio, &mio_rmidi_ops, mode, nbio);
	hdl->fd = fd;
	return (struct mio_hdl *)hdl;
}

struct mio_hdl *
_mio_rmidi_open(const char *str, unsigned int mode, int nbio)
{
	struct mio_hdl *hdl;
	int fd;

	fd = mio_rmidi_getfd(str, mode, nbio);
	if (fd < 0)
		return NULL;
	hdl = mio_rmidi_fdopen(fd, mode, nbio);
	if (hdl != NULL)
		return hdl;
	while (close(fd) < 0 && errno == EINTR)
		; /* retry */
	return NULL;
}

static void
mio_rmidi_close(struct mio_hdl *sh)
{
	struct mio_rmidi_hdl *hdl = (struct mio_rmidi_hdl *)sh;
	int rc;

	do {
		rc = close(hdl->fd);
	} while (rc < 0 && errno == EINTR);
	free(hdl);
}

static size_t
mio_rmidi_read(struct mio_hdl *sh, void *buf, size_t len)
{
	struct mio_rmidi_hdl *hdl = (struct mio_rmidi_hdl *)sh;
	ssize_t n;

	while ((n = read(hdl->fd, buf, len)) < 0) {
		if (errno == EINTR)
			continue;
		if (errno != EAGAIN) {
			DPERROR("mio_rmidi_read: read");
			hdl->mio.eof = 1;
		}
		return 0;
	}
	if (n == 0) {
		DPRINTF("mio_rmidi_read: eof\n");
		hdl->mio.eof = 1;
		return 0;
	}
	return n;
}

static size_t
mio_rmidi_write(struct mio_hdl *sh, const void *buf, size_t len)
{
	struct mio_rmidi_hdl *hdl = (struct mio_rmidi_hdl *)sh;
	ssize_t n;

	while ((n = write(hdl->fd, buf, len)) < 0) {
		if (errno == EINTR)
			continue;
		if (errno != EAGAIN) {
			DPERROR("mio_rmidi_write: write");
			hdl->mio.eof = 1;
		}
		return 0;
	}
	return n;
}

static int
mio_rmidi_nfds(struct mio_hdl *sh)
{
	return 1;
}

static int
mio_rmidi_pollfd(struct mio_hdl *sh, struct pollfd *pfd, int events)
{
	struct mio_rmidi_hdl *hdl = (struct mio_rmidi_hdl *)sh;

	pfd->fd = hdl->fd;
	pfd->events = events;
	return 1;
}

static int
mio_rmidi_revents(struct mio_hdl *sh, struct pollfd *pfd)
{
	return pfd->revents;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mio_rmidi.c,v 1.24 2016/01/09 08:27:24 ratchov Exp $ */
2			/*
3			* Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17
18			#include <sys/types.h>
19			#include <sys/stat.h>
20
21			#include <errno.h>
22			#include <fcntl.h>
23			#include <limits.h>
24			#include <poll.h>
25			#include <stdio.h>
26			#include <stdlib.h>
27			#include <string.h>
28			#include <unistd.h>
29
30			#include "debug.h"
31			#include "mio_priv.h"
32
33			#define DEVPATH_PREFIX "/dev/rmidi"
34			#define DEVPATH_MAX (1 + \
35			sizeof(DEVPATH_PREFIX) - 1 + \
36			sizeof(int) * 3)
37
38			struct mio_rmidi_hdl {
39			struct mio_hdl mio;
40			int fd;
41			};
42
43			static void mio_rmidi_close(struct mio_hdl *);
44			static size_t mio_rmidi_read(struct mio_hdl , void , size_t);
45			static size_t mio_rmidi_write(struct mio_hdl , const void , size_t);
46			static int mio_rmidi_nfds(struct mio_hdl *);
47			static int mio_rmidi_pollfd(struct mio_hdl , struct pollfd , int);
48			static int mio_rmidi_revents(struct mio_hdl , struct pollfd );
49
50			static struct mio_ops mio_rmidi_ops = {
51			mio_rmidi_close,
52			mio_rmidi_write,
53			mio_rmidi_read,
54			mio_rmidi_nfds,
55			mio_rmidi_pollfd,
56			mio_rmidi_revents
57			};
58
59			int
60			mio_rmidi_getfd(const char *str, unsigned int mode, int nbio)
61			{
62			const char *p;
63			char path[DEVPATH_MAX];
64			unsigned int devnum;
65			int fd, flags;
66
67			#ifdef DEBUG
68			_sndio_debug_init();
69			#endif
70			p = _sndio_parsetype(str, "rmidi");
71			if (p == NULL) {
72			DPRINTF("mio_rmidi_getfd: %s: \"rsnd\" expected\n", str);
73			return -1;
74			}
75			switch (*p) {
76			case '/':
77			p++;
78			break;
79			default:
80			DPRINTF("mio_rmidi_getfd: %s: '/' expected\n", str);
81			return -1;
82			}
83			p = _sndio_parsenum(p, &devnum, 255);
84			if (p == NULL \|\| *p != '\0') {
85			DPRINTF("mio_rmidi_getfd: %s: number expected after '/'\n", str);
86			return -1;
87			}
88			snprintf(path, sizeof(path), DEVPATH_PREFIX "%u", devnum);
89			if (mode == (MIO_IN \| MIO_OUT))
90			flags = O_RDWR;
91			else
92			flags = (mode & MIO_OUT) ? O_WRONLY : O_RDONLY;
93			while ((fd = open(path, flags \| O_NONBLOCK \| O_CLOEXEC)) < 0) {
94			if (errno == EINTR)
95			continue;
96			DPERROR(path);
97			return -1;
98			}
99			return fd;
100			}
101
102			struct mio_hdl *
103			mio_rmidi_fdopen(int fd, unsigned int mode, int nbio)
104			{
105			struct mio_rmidi_hdl *hdl;
106
107			#ifdef DEBUG
108			_sndio_debug_init();
109			#endif
110			hdl = malloc(sizeof(struct mio_rmidi_hdl));
111			if (hdl == NULL)
112			return NULL;
113			_mio_create(&hdl->mio, &mio_rmidi_ops, mode, nbio);
114			hdl->fd = fd;
115			return (struct mio_hdl *)hdl;
116			}
117
118			struct mio_hdl *
119			_mio_rmidi_open(const char *str, unsigned int mode, int nbio)
120			{
121			struct mio_hdl *hdl;
122			int fd;
123
124			fd = mio_rmidi_getfd(str, mode, nbio);
125			if (fd < 0)
126			return NULL;
127			hdl = mio_rmidi_fdopen(fd, mode, nbio);
128			if (hdl != NULL)
129			return hdl;
130			while (close(fd) < 0 && errno == EINTR)
131			; /* retry */
132			return NULL;
133			}
134
135			static void
136			mio_rmidi_close(struct mio_hdl *sh)
137			{
138			struct mio_rmidi_hdl hdl = (struct mio_rmidi_hdl )sh;
139			int rc;
140
141			do {
142			rc = close(hdl->fd);
143			} while (rc < 0 && errno == EINTR);
144			free(hdl);
145			}
146
147			static size_t
148			mio_rmidi_read(struct mio_hdl sh, void buf, size_t len)
149			{
150			struct mio_rmidi_hdl hdl = (struct mio_rmidi_hdl )sh;
151			ssize_t n;
152
153			while ((n = read(hdl->fd, buf, len)) < 0) {
154			if (errno == EINTR)
155			continue;
156			if (errno != EAGAIN) {
157			DPERROR("mio_rmidi_read: read");
158			hdl->mio.eof = 1;
159			}
160			return 0;
161			}
162			if (n == 0) {
163			DPRINTF("mio_rmidi_read: eof\n");
164			hdl->mio.eof = 1;
165			return 0;
166			}
167			return n;
168			}
169
170			static size_t
171			mio_rmidi_write(struct mio_hdl sh, const void buf, size_t len)
172			{
173			struct mio_rmidi_hdl hdl = (struct mio_rmidi_hdl )sh;
174			ssize_t n;
175
176			while ((n = write(hdl->fd, buf, len)) < 0) {
177			if (errno == EINTR)
178			continue;
179			if (errno != EAGAIN) {
180			DPERROR("mio_rmidi_write: write");
181			hdl->mio.eof = 1;
182			}
183			return 0;
184			}
185			return n;
186			}
187
188			static int
189			mio_rmidi_nfds(struct mio_hdl *sh)
190			{
191			return 1;
192			}
193
194			static int
195			mio_rmidi_pollfd(struct mio_hdl sh, struct pollfd pfd, int events)
196			{
197			struct mio_rmidi_hdl hdl = (struct mio_rmidi_hdl )sh;
198
199			pfd->fd = hdl->fd;
200			pfd->events = events;
201			return 1;
202			}
203
204			static int
205			mio_rmidi_revents(struct mio_hdl sh, struct pollfd pfd)
206			{
207			return pfd->revents;
208			}