char: move pty chardev in its own file

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eric Blake <eblake@redhat.com>

1 files changed, 0 insertions, 258 deletions

diff --git a/chardev/char.c b/chardev/char.c
index b542c25cec..6d4cb7c71e 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -661,261 +661,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
     || defined(__GLIBC__)
 
 #define HAVE_CHARDEV_SERIAL 1
-#define HAVE_CHARDEV_PTY 1
-
-typedef struct {
-    Chardev parent;
-    QIOChannel *ioc;
-    int read_bytes;
-
-    /* Protected by the Chardev chr_write_lock.  */
-    int connected;
-    guint timer_tag;
-    guint open_tag;
-} PtyChardev;
-
-#define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY)
-
-static void pty_chr_update_read_handler_locked(Chardev *chr);
-static void pty_chr_state(Chardev *chr, int connected);
-
-static gboolean pty_chr_timer(gpointer opaque)
-{
-    struct Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    s->timer_tag = 0;
-    s->open_tag = 0;
-    if (!s->connected) {
-        /* Next poll ... */
-        pty_chr_update_read_handler_locked(chr);
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-    return FALSE;
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_rearm_timer(Chardev *chr, int ms)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-    char *name;
-
-    if (s->timer_tag) {
-        g_source_remove(s->timer_tag);
-        s->timer_tag = 0;
-    }
-
-    if (ms == 1000) {
-        name = g_strdup_printf("pty-timer-secs-%s", chr->label);
-        s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
-    } else {
-        name = g_strdup_printf("pty-timer-ms-%s", chr->label);
-        s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
-    }
-    g_source_set_name_by_id(s->timer_tag, name);
-    g_free(name);
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_update_read_handler_locked(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;
-    do {
-        rc = g_poll(&pfd, 1, 0);
-    } while (rc == -1 && errno == EINTR);
-    assert(rc >= 0);
-
-    if (pfd.revents & G_IO_HUP) {
-        pty_chr_state(chr, 0);
-    } else {
-        pty_chr_state(chr, 1);
-    }
-}
-
-static void pty_chr_update_read_handler(Chardev *chr,
-                                        GMainContext *context)
-{
-    qemu_mutex_lock(&chr->chr_write_lock);
-    pty_chr_update_read_handler_locked(chr);
-    qemu_mutex_unlock(&chr->chr_write_lock);
-}
-
-/* Called with chr_write_lock held.  */
-static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-
-    if (!s->connected) {
-        /* guest sends data, check for (re-)connect */
-        pty_chr_update_read_handler_locked(chr);
-        if (!s->connected) {
-            return 0;
-        }
-    }
-    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 gboolean qemu_chr_be_generic_open_func(gpointer opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-
-    s->open_tag = 0;
-    qemu_chr_be_generic_open(chr);
-    return FALSE;
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_state(Chardev *chr, int connected)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-
-    if (!connected) {
-        if (s->open_tag) {
-            g_source_remove(s->open_tag);
-            s->open_tag = 0;
-        }
-        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 {
-        if (s->timer_tag) {
-            g_source_remove(s->timer_tag);
-            s->timer_tag = 0;
-        }
-        if (!s->connected) {
-            g_assert(s->open_tag == 0);
-            s->connected = 1;
-            s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
-        }
-        if (!chr->fd_in_tag) {
-            chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
-                                               pty_chr_read_poll,
-                                               pty_chr_read,
-                                               chr, NULL);
-        }
-    }
-}
-
-static void char_pty_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    PtyChardev *s = PTY_CHARDEV(obj);
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    pty_chr_state(chr, 0);
-    object_unref(OBJECT(s->ioc));
-    if (s->timer_tag) {
-        g_source_remove(s->timer_tag);
-        s->timer_tag = 0;
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-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);
-    qemu_set_nonblock(master_fd);
-
-    chr->filename = g_strdup_printf("pty:%s", pty_name);
-    error_report("char device redirected to %s (label %s)",
-                 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_tag = 0;
-    *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 tty_serial_init(int fd, int speed,
                             int parity, int data_bits, int stop_bits)
@@ -2175,9 +1920,6 @@ static void register_types(void)
 #ifdef HAVE_CHARDEV_PARPORT
     type_register_static(&char_parallel_type_info);
 #endif
-#ifdef HAVE_CHARDEV_PTY
-    type_register_static(&char_pty_type_info);
-#endif
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic