diff options
Diffstat (limited to 'chardev/char-fd.c')
| -rw-r--r-- | chardev/char-fd.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/chardev/char-fd.c b/chardev/char-fd.c index 743d3989b4..c11b1037f9 100644 --- a/chardev/char-fd.c +++ b/chardev/char-fd.c @@ -39,6 +39,10 @@ static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len) { FDChardev *s = FD_CHARDEV(chr); + if (!s->ioc_out) { + return -1; + } + return io_channel_send(s->ioc_out, buf, len); } @@ -209,15 +213,19 @@ void qemu_chr_open_fd(Chardev *chr, FDChardev *s = FD_CHARDEV(chr); char *name; - s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); - name = g_strdup_printf("chardev-file-in-%s", chr->label); - qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); - g_free(name); - s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); - name = g_strdup_printf("chardev-file-out-%s", chr->label); - qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); - g_free(name); - qemu_set_nonblock(fd_out); + if (fd_in >= 0) { + s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); + name = g_strdup_printf("chardev-file-in-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); + g_free(name); + } + if (fd_out >= 0) { + s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); + name = g_strdup_printf("chardev-file-out-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); + g_free(name); + qemu_set_nonblock(fd_out); + } } static void char_fd_class_init(ObjectClass *oc, void *data) |