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qemu-char: convert pty to GIOChannel 

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Message-id: 339eebf3c59a450b0354056e9ac4b41f67230831.1362505276.git.amit.shah@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2013-03-05 23:21:20 +05:30
parent a29753f8aa
commit 093d3a2005
1 changed files with 27 additions and 17 deletions
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44
qemu-char.c
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@ -953,7 +953,8 @@ static void cfmakeraw (struct termios *termios_p)
#define HAVE_CHARDEV_TTY 1
typedef struct {
int fd;
GIOChannel *fd;
guint fd_tag;
int connected;
int polling;
int read_bytes;
@ -972,7 +973,7 @@ static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
pty_chr_update_read_handler(chr);
return 0;
}
return send_all(s->fd, buf, len);
return io_channel_send_all(s->fd, buf, len);
}
static int pty_chr_read_poll(void *opaque)
@ -984,36 +985,39 @@ static int pty_chr_read_poll(void *opaque)
return s->read_bytes;
}
static void pty_chr_read(void *opaque)
static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
{
CharDriverState *chr = opaque;
PtyCharDriver *s = chr->opaque;
int size, len;
gsize size, len;
uint8_t buf[READ_BUF_LEN];
GIOStatus status;
len = sizeof(buf);
if (len > s->read_bytes)
len = s->read_bytes;
if (len == 0)
return;
size = read(s->fd, buf, len);
if ((size == -1 && errno == EIO) ||
(size == 0)) {
return FALSE;
status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
if (status != G_IO_STATUS_NORMAL) {
pty_chr_state(chr, 0);
return;
}
if (size > 0) {
return FALSE;
} else {
pty_chr_state(chr, 1);
qemu_chr_be_write(chr, buf, size);
}
return TRUE;
}
static void pty_chr_update_read_handler(CharDriverState *chr)
{
PtyCharDriver *s = chr->opaque;
qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
pty_chr_read, NULL, chr);
if (s->fd_tag) {
g_source_remove(s->fd_tag);
}
s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
s->polling = 1;
/*
* Short timeout here: just need wait long enougth that qemu makes
@ -1031,7 +1035,8 @@ static void pty_chr_state(CharDriverState *chr, int connected)
PtyCharDriver *s = chr->opaque;
if (!connected) {
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
g_source_remove(s->fd_tag);
s->fd_tag = 0;
s->connected = 0;
s->polling = 0;
/* (re-)connect poll interval for idle guests: once per second.
@ -1066,9 +1071,14 @@ static void pty_chr_timer(void *opaque)
static void pty_chr_close(struct CharDriverState *chr)
{
PtyCharDriver *s = chr->opaque;
int fd;
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
close(s->fd);
if (s->fd_tag) {
g_source_remove(s->fd_tag);
}
fd = g_io_channel_unix_get_fd(s->fd);
g_io_channel_unref(s->fd);
close(fd);
qemu_del_timer(s->timer);
qemu_free_timer(s->timer);
g_free(s);
@ -1120,7 +1130,7 @@ static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
chr->chr_update_read_handler = pty_chr_update_read_handler;
chr->chr_close = pty_chr_close;
s->fd = master_fd;
s->fd = io_channel_from_fd(master_fd);
s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
return chr;