[mirror_qemu.git] / chardev / char-pty.c

/*
 * QEMU System Emulator
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu/osdep.h"
#include "qapi/error.h"
#include "chardev/char.h"
#include "io/channel-file.h"
#include "qemu/sockets.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/qemu-print.h"

#include "chardev/char-io.h"
#include "qom/object.h"

struct PtyChardev {
    Chardev parent;
    QIOChannel *ioc;
    int read_bytes;

    int connected;
    GSource *timer_src;
};
typedef struct PtyChardev PtyChardev;

DECLARE_INSTANCE_CHECKER(PtyChardev, PTY_CHARDEV,
                         TYPE_CHARDEV_PTY)

static void pty_chr_state(Chardev *chr, int connected);

static void pty_chr_timer_cancel(PtyChardev *s)
{
    if (s->timer_src) {
        g_source_destroy(s->timer_src);
        g_source_unref(s->timer_src);
        s->timer_src = NULL;
    }
}

static gboolean pty_chr_timer(gpointer opaque)
{
    struct Chardev *chr = CHARDEV(opaque);
    PtyChardev *s = PTY_CHARDEV(opaque);

    pty_chr_timer_cancel(s);
    if (!s->connected) {
        /* Next poll ... */
        qemu_chr_be_update_read_handlers(chr, chr->gcontext);
    }
    return FALSE;
}

static void pty_chr_rearm_timer(Chardev *chr, int ms)
{
    PtyChardev *s = PTY_CHARDEV(chr);
    char *name;

    pty_chr_timer_cancel(s);
    name = g_strdup_printf("pty-timer-%s", chr->label);
    s->timer_src = qemu_chr_timeout_add_ms(chr, ms, pty_chr_timer, chr);
    g_source_set_name(s->timer_src, name);
    g_free(name);
}

static void pty_chr_update_read_handler(Chardev *chr)
{
    PtyChardev *s = PTY_CHARDEV(chr);
    GPollFD pfd;
    int rc;
    QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);

    pfd.fd = fioc->fd;
    pfd.events = G_IO_OUT;
    pfd.revents = 0;
    rc = RETRY_ON_EINTR(g_poll(&pfd, 1, 0));
    assert(rc >= 0);

    if (pfd.revents & G_IO_HUP) {
        pty_chr_state(chr, 0);
    } else {
        pty_chr_state(chr, 1);
    }
}

static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
{
    PtyChardev *s = PTY_CHARDEV(chr);

    if (!s->connected) {
        return len;
    }
    return io_channel_send(s->ioc, buf, len);
}

static GSource *pty_chr_add_watch(Chardev *chr, GIOCondition cond)
{
    PtyChardev *s = PTY_CHARDEV(chr);
    if (!s->connected) {
        return NULL;
    }
    return qio_channel_create_watch(s->ioc, cond);
}

static int pty_chr_read_poll(void *opaque)
{
    Chardev *chr = CHARDEV(opaque);
    PtyChardev *s = PTY_CHARDEV(opaque);

    s->read_bytes = qemu_chr_be_can_write(chr);
    return s->read_bytes;
}

static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
{
    Chardev *chr = CHARDEV(opaque);
    PtyChardev *s = PTY_CHARDEV(opaque);
    gsize len;
    uint8_t buf[CHR_READ_BUF_LEN];
    ssize_t ret;

    len = sizeof(buf);
    if (len > s->read_bytes) {
        len = s->read_bytes;
    }
    if (len == 0) {
        return TRUE;
    }
    ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
    if (ret <= 0) {
        pty_chr_state(chr, 0);
        return FALSE;
    } else {
        pty_chr_state(chr, 1);
        qemu_chr_be_write(chr, buf, ret);
    }
    return TRUE;
}

static void pty_chr_state(Chardev *chr, int connected)
{
    PtyChardev *s = PTY_CHARDEV(chr);

    if (!connected) {
        remove_fd_in_watch(chr);
        s->connected = 0;
        /* (re-)connect poll interval for idle guests: once per second.
         * We check more frequently in case the guests sends data to
         * the virtual device linked to our pty. */
        pty_chr_rearm_timer(chr, 1000);
    } else {
        pty_chr_timer_cancel(s);
        if (!s->connected) {
            s->connected = 1;
            qemu_chr_be_event(chr, CHR_EVENT_OPENED);
        }
        if (!chr->gsource) {
            chr->gsource = io_add_watch_poll(chr, s->ioc,
                                               pty_chr_read_poll,
                                               pty_chr_read,
                                               chr, chr->gcontext);
        }
    }
}

static void char_pty_finalize(Object *obj)
{
    Chardev *chr = CHARDEV(obj);
    PtyChardev *s = PTY_CHARDEV(obj);

    pty_chr_state(chr, 0);
    object_unref(OBJECT(s->ioc));
    pty_chr_timer_cancel(s);
    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}

#if defined HAVE_PTY_H
# include <pty.h>
#elif defined CONFIG_BSD
# include <termios.h>
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#  include <libutil.h>
# else
#  include <util.h>
# endif
#elif defined CONFIG_SOLARIS
# include <termios.h>
# include <stropts.h>
#else
# include <termios.h>
#endif

#ifdef __sun__

#if !defined(HAVE_OPENPTY)
/* Once illumos has openpty(), this is going to be removed. */
static int openpty(int *amaster, int *aslave, char *name,
                   struct termios *termp, struct winsize *winp)
{
    const char *slave;
    int mfd = -1, sfd = -1;

    *amaster = *aslave = -1;

    mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
    if (mfd < 0) {
        goto err;
    }

    if (grantpt(mfd) == -1 || unlockpt(mfd) == -1) {
        goto err;
    }

    if ((slave = ptsname(mfd)) == NULL) {
        goto err;
    }

    if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1) {
        goto err;
    }

    if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
        (termp != NULL && tcgetattr(sfd, termp) < 0)) {
        goto err;
    }

    *amaster = mfd;
    *aslave = sfd;

    if (winp) {
        ioctl(sfd, TIOCSWINSZ, winp);
    }

    return 0;

err:
    if (sfd != -1) {
        close(sfd);
    }
    close(mfd);
    return -1;
}
#endif

static void cfmakeraw (struct termios *termios_p)
{
    termios_p->c_iflag &=
        ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
    termios_p->c_oflag &= ~OPOST;
    termios_p->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
    termios_p->c_cflag &= ~(CSIZE | PARENB);
    termios_p->c_cflag |= CS8;

    termios_p->c_cc[VMIN] = 0;
    termios_p->c_cc[VTIME] = 0;
}
#endif

/* like openpty() but also makes it raw; return master fd */
static int qemu_openpty_raw(int *aslave, char *pty_name)
{
    int amaster;
    struct termios tty;
#if defined(__OpenBSD__) || defined(__DragonFly__)
    char pty_buf[PATH_MAX];
#define q_ptsname(x) pty_buf
#else
    char *pty_buf = NULL;
#define q_ptsname(x) ptsname(x)
#endif

    if (openpty(&amaster, aslave, pty_buf, NULL, NULL) < 0) {
        return -1;
    }

    /* Set raw attributes on the pty. */
    tcgetattr(*aslave, &tty);
    cfmakeraw(&tty);
    tcsetattr(*aslave, TCSAFLUSH, &tty);

    if (pty_name) {
        strcpy(pty_name, q_ptsname(amaster));
    }

    return amaster;
}

static void char_pty_open(Chardev *chr,
                          ChardevBackend *backend,
                          bool *be_opened,
                          Error **errp)
{
    PtyChardev *s;
    int master_fd, slave_fd;
    char pty_name[PATH_MAX];
    char *name;

    master_fd = qemu_openpty_raw(&slave_fd, pty_name);
    if (master_fd < 0) {
        error_setg_errno(errp, errno, "Failed to create PTY");
        return;
    }

    close(slave_fd);
    if (!g_unix_set_fd_nonblocking(master_fd, true, NULL)) {
        error_setg_errno(errp, errno, "Failed to set FD nonblocking");
        return;
    }

    chr->filename = g_strdup_printf("pty:%s", pty_name);
    qemu_printf("char device redirected to %s (label %s)\n",
                pty_name, chr->label);

    s = PTY_CHARDEV(chr);
    s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
    name = g_strdup_printf("chardev-pty-%s", chr->label);
    qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
    g_free(name);
    s->timer_src = NULL;
    *be_opened = false;
}

static void char_pty_class_init(ObjectClass *oc, void *data)
{
    ChardevClass *cc = CHARDEV_CLASS(oc);

    cc->open = char_pty_open;
    cc->chr_write = char_pty_chr_write;
    cc->chr_update_read_handler = pty_chr_update_read_handler;
    cc->chr_add_watch = pty_chr_add_watch;
}

static const TypeInfo char_pty_type_info = {
    .name = TYPE_CHARDEV_PTY,
    .parent = TYPE_CHARDEV,
    .instance_size = sizeof(PtyChardev),
    .instance_finalize = char_pty_finalize,
    .class_init = char_pty_class_init,
};

static void register_types(void)
{
    type_register_static(&char_pty_type_info);
}

type_init(register_types);
Commit	Line	Data
c3b7d620 MAL	1	/*
	2	* QEMU System Emulator
	3	*
	4	* Copyright (c) 2003-2008 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
0b8fa32f	24
c3b7d620 MAL	25	#include "qemu/osdep.h"
c3b7d620 MAL	26	#include "qapi/error.h"
8228e353	27	#include "chardev/char.h"
c3b7d620 MAL	28	#include "io/channel-file.h"
	29	#include "qemu/sockets.h"
	30	#include "qemu/error-report.h"
0b8fa32f	31	#include "qemu/module.h"
6ade45f2	32	#include "qemu/qemu-print.h"
c3b7d620	33
8228e353	34	#include "chardev/char-io.h"
db1015e9	35	#include "qom/object.h"
c3b7d620	36
db1015e9	37	struct PtyChardev {
c3b7d620 MAL	38	Chardev parent;
	39	QIOChannel *ioc;
	40	int read_bytes;
	41
c3b7d620	42	int connected;
2c716ba1	43	GSource *timer_src;
db1015e9 EH	44	};
db1015e9 EH	45	typedef struct PtyChardev PtyChardev;
c3b7d620	46
8110fa1d EH	47	DECLARE_INSTANCE_CHECKER(PtyChardev, PTY_CHARDEV,
8110fa1d EH	48	TYPE_CHARDEV_PTY)
c3b7d620	49
c3b7d620 MAL	50	static void pty_chr_state(Chardev *chr, int connected);
c3b7d620 MAL	51
4e4b5734 PX	52	static void pty_chr_timer_cancel(PtyChardev *s)
	53	{
	54	if (s->timer_src) {
	55	g_source_destroy(s->timer_src);
	56	g_source_unref(s->timer_src);
	57	s->timer_src = NULL;
	58	}
	59	}
	60
c3b7d620 MAL	61	static gboolean pty_chr_timer(gpointer opaque)
	62	{
	63	struct Chardev *chr = CHARDEV(opaque);
	64	PtyChardev *s = PTY_CHARDEV(opaque);
	65
4e4b5734	66	pty_chr_timer_cancel(s);
c3b7d620 MAL	67	if (!s->connected) {
c3b7d620 MAL	68	/* Next poll ... */
f7ea2038	69	qemu_chr_be_update_read_handlers(chr, chr->gcontext);
c3b7d620	70	}
c3b7d620 MAL	71	return FALSE;
	72	}
	73
c3b7d620 MAL	74	static void pty_chr_rearm_timer(Chardev *chr, int ms)
	75	{
	76	PtyChardev *s = PTY_CHARDEV(chr);
	77	char *name;
	78
2c716ba1 PX	79	pty_chr_timer_cancel(s);
	80	name = g_strdup_printf("pty-timer-%s", chr->label);
	81	s->timer_src = qemu_chr_timeout_add_ms(chr, ms, pty_chr_timer, chr);
	82	g_source_set_name(s->timer_src, name);
c3b7d620 MAL	83	g_free(name);
	84	}
	85
f7ea2038	86	static void pty_chr_update_read_handler(Chardev *chr)
c3b7d620 MAL	87	{
	88	PtyChardev *s = PTY_CHARDEV(chr);
	89	GPollFD pfd;
	90	int rc;
	91	QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
	92
	93	pfd.fd = fioc->fd;
	94	pfd.events = G_IO_OUT;
	95	pfd.revents = 0;
37b0b24e	96	rc = RETRY_ON_EINTR(g_poll(&pfd, 1, 0));
c3b7d620 MAL	97	assert(rc >= 0);
	98
	99	if (pfd.revents & G_IO_HUP) {
	100	pty_chr_state(chr, 0);
	101	} else {
	102	pty_chr_state(chr, 1);
	103	}
	104	}
	105
c3b7d620 MAL	106	static int char_pty_chr_write(Chardev chr, const uint8_t buf, int len)
	107	{
	108	PtyChardev *s = PTY_CHARDEV(chr);
	109
	110	if (!s->connected) {
f8278c7d	111	return len;
c3b7d620 MAL	112	}
	113	return io_channel_send(s->ioc, buf, len);
	114	}
	115
	116	static GSource pty_chr_add_watch(Chardev chr, GIOCondition cond)
	117	{
	118	PtyChardev *s = PTY_CHARDEV(chr);
	119	if (!s->connected) {
	120	return NULL;
	121	}
	122	return qio_channel_create_watch(s->ioc, cond);
	123	}
	124
	125	static int pty_chr_read_poll(void *opaque)
	126	{
	127	Chardev *chr = CHARDEV(opaque);
	128	PtyChardev *s = PTY_CHARDEV(opaque);
	129
	130	s->read_bytes = qemu_chr_be_can_write(chr);
	131	return s->read_bytes;
	132	}
	133
	134	static gboolean pty_chr_read(QIOChannel chan, GIOCondition cond, void opaque)
	135	{
	136	Chardev *chr = CHARDEV(opaque);
	137	PtyChardev *s = PTY_CHARDEV(opaque);
	138	gsize len;
	139	uint8_t buf[CHR_READ_BUF_LEN];
	140	ssize_t ret;
	141
	142	len = sizeof(buf);
	143	if (len > s->read_bytes) {
	144	len = s->read_bytes;
	145	}
	146	if (len == 0) {
	147	return TRUE;
	148	}
	149	ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
	150	if (ret <= 0) {
	151	pty_chr_state(chr, 0);
	152	return FALSE;
	153	} else {
	154	pty_chr_state(chr, 1);
	155	qemu_chr_be_write(chr, buf, ret);
	156	}
	157	return TRUE;
	158	}
	159
c3b7d620 MAL	160	static void pty_chr_state(Chardev *chr, int connected)
	161	{
	162	PtyChardev *s = PTY_CHARDEV(chr);
	163
	164	if (!connected) {
b19456dd	165	remove_fd_in_watch(chr);
c3b7d620 MAL	166	s->connected = 0;
	167	/* (re-)connect poll interval for idle guests: once per second.
	168	* We check more frequently in case the guests sends data to
	169	* the virtual device linked to our pty. */
	170	pty_chr_rearm_timer(chr, 1000);
	171	} else {
2c716ba1	172	pty_chr_timer_cancel(s);
c3b7d620	173	if (!s->connected) {
c3b7d620	174	s->connected = 1;
f7ea2038	175	qemu_chr_be_event(chr, CHR_EVENT_OPENED);
c3b7d620	176	}
b19456dd HZ	177	if (!chr->gsource) {
b19456dd HZ	178	chr->gsource = io_add_watch_poll(chr, s->ioc,
c3b7d620 MAL	179	pty_chr_read_poll,
c3b7d620 MAL	180	pty_chr_read,
6bbb6c06	181	chr, chr->gcontext);
c3b7d620 MAL	182	}
	183	}
	184	}
	185
	186	static void char_pty_finalize(Object *obj)
	187	{
	188	Chardev *chr = CHARDEV(obj);
	189	PtyChardev *s = PTY_CHARDEV(obj);
	190
c3b7d620 MAL	191	pty_chr_state(chr, 0);
c3b7d620 MAL	192	object_unref(OBJECT(s->ioc));
2c716ba1	193	pty_chr_timer_cancel(s);
c3b7d620 MAL	194	qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
	195	}
	196
3f6c2e8b MAL	197	#if defined HAVE_PTY_H
	198	# include <pty.h>
	199	#elif defined CONFIG_BSD
	200	# include <termios.h>
	201	# if defined(__FreeBSD__) \|\| defined(__FreeBSD_kernel__) \|\| defined(__DragonFly__)
	202	# include <libutil.h>
	203	# else
	204	# include <util.h>
	205	# endif
	206	#elif defined CONFIG_SOLARIS
	207	# include <termios.h>
	208	# include <stropts.h>
	209	#else
	210	# include <termios.h>
	211	#endif
	212
	213	#ifdef __sun__
	214
	215	#if !defined(HAVE_OPENPTY)
	216	/* Once illumos has openpty(), this is going to be removed. */
	217	static int openpty(int amaster, int aslave, char *name,
	218	struct termios termp, struct winsize winp)
	219	{
	220	const char *slave;
	221	int mfd = -1, sfd = -1;
	222
	223	amaster = aslave = -1;
	224
	225	mfd = open("/dev/ptmx", O_RDWR \| O_NOCTTY);
	226	if (mfd < 0) {
	227	goto err;
	228	}
	229
	230	if (grantpt(mfd) == -1 \|\| unlockpt(mfd) == -1) {
	231	goto err;
	232	}
	233
	234	if ((slave = ptsname(mfd)) == NULL) {
	235	goto err;
	236	}
	237
	238	if ((sfd = open(slave, O_RDONLY \| O_NOCTTY)) == -1) {
	239	goto err;
	240	}
	241
	242	if (ioctl(sfd, I_PUSH, "ptem") == -1 \|\|
	243	(termp != NULL && tcgetattr(sfd, termp) < 0)) {
	244	goto err;
	245	}
	246
	247	*amaster = mfd;
	248	*aslave = sfd;
	249
	250	if (winp) {
	251	ioctl(sfd, TIOCSWINSZ, winp);
	252	}
	253
	254	return 0;
	255
	256	err:
	257	if (sfd != -1) {
	258	close(sfd);
	259	}
	260	close(mfd);
261	return -1;
262	}
263	#endif
264
265	static void cfmakeraw (struct termios *termios_p)
266	{
267	termios_p->c_iflag &=
268	~(IGNBRK \| BRKINT \| PARMRK \| ISTRIP \| INLCR \| IGNCR \| ICRNL \| IXON);
269	termios_p->c_oflag &= ~OPOST;
270	termios_p->c_lflag &= ~(ECHO \| ECHONL \| ICANON \| ISIG \| IEXTEN);
271	termios_p->c_cflag &= ~(CSIZE \| PARENB);
272	termios_p->c_cflag \|= CS8;
273
274	termios_p->c_cc[VMIN] = 0;
275	termios_p->c_cc[VTIME] = 0;
276	}
277	#endif
278
279	/* like openpty() but also makes it raw; return master fd */
280	static int qemu_openpty_raw(int aslave, char pty_name)
281	{
282	int amaster;
283	struct termios tty;
284	#if defined(__OpenBSD__) \|\| defined(__DragonFly__)
285	char pty_buf[PATH_MAX];
286	#define q_ptsname(x) pty_buf
287	#else
288	char *pty_buf = NULL;
289	#define q_ptsname(x) ptsname(x)
290	#endif
291
292	if (openpty(&amaster, aslave, pty_buf, NULL, NULL) < 0) {
293	return -1;
294	}
295
296	/* Set raw attributes on the pty. */
297	tcgetattr(*aslave, &tty);
298	cfmakeraw(&tty);
299	tcsetattr(*aslave, TCSAFLUSH, &tty);
300
301	if (pty_name) {
302	strcpy(pty_name, q_ptsname(amaster));
303	}
304
305	return amaster;
306	}
307
c3b7d620 MAL	308	static void char_pty_open(Chardev *chr,
	309	ChardevBackend *backend,
	310	bool *be_opened,
	311	Error **errp)
	312	{
	313	PtyChardev *s;
	314	int master_fd, slave_fd;
	315	char pty_name[PATH_MAX];
	316	char *name;
	317
	318	master_fd = qemu_openpty_raw(&slave_fd, pty_name);
	319	if (master_fd < 0) {
	320	error_setg_errno(errp, errno, "Failed to create PTY");
	321	return;
	322	}
	323
	324	close(slave_fd);
b84bb4df MAL	325	if (!g_unix_set_fd_nonblocking(master_fd, true, NULL)) {
	326	error_setg_errno(errp, errno, "Failed to set FD nonblocking");
	327	return;
	328	}
c3b7d620 MAL	329
c3b7d620 MAL	330	chr->filename = g_strdup_printf("pty:%s", pty_name);
6ade45f2 MA	331	qemu_printf("char device redirected to %s (label %s)\n",
6ade45f2 MA	332	pty_name, chr->label);
c3b7d620 MAL	333
	334	s = PTY_CHARDEV(chr);
	335	s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
	336	name = g_strdup_printf("chardev-pty-%s", chr->label);
	337	qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
	338	g_free(name);
2c716ba1	339	s->timer_src = NULL;
c3b7d620 MAL	340	*be_opened = false;
	341	}
	342
	343	static void char_pty_class_init(ObjectClass oc, void data)
	344	{
	345	ChardevClass *cc = CHARDEV_CLASS(oc);
	346
	347	cc->open = char_pty_open;
	348	cc->chr_write = char_pty_chr_write;
	349	cc->chr_update_read_handler = pty_chr_update_read_handler;
	350	cc->chr_add_watch = pty_chr_add_watch;
	351	}
	352
	353	static const TypeInfo char_pty_type_info = {
	354	.name = TYPE_CHARDEV_PTY,
	355	.parent = TYPE_CHARDEV,
	356	.instance_size = sizeof(PtyChardev),
	357	.instance_finalize = char_pty_finalize,
	358	.class_init = char_pty_class_init,
	359	};
	360
	361	static void register_types(void)
	362	{
	363	type_register_static(&char_pty_type_info);
	364	}
	365
	366	type_init(register_types);