diff options
Diffstat (limited to 'chardev/char-fe.c')
| -rw-r--r-- | chardev/char-fe.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/chardev/char-fe.c b/chardev/char-fe.c index 3f90f0567c..f3af6ae584 100644 --- a/chardev/char-fe.c +++ b/chardev/char-fe.c @@ -179,9 +179,21 @@ void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...) Chardev *qemu_chr_fe_get_driver(CharBackend *be) { + /* this is unsafe for the users that support chardev hotswap */ + assert(be->chr_be_change == NULL); return be->chr; } +bool qemu_chr_fe_backend_connected(CharBackend *be) +{ + return !!be->chr; +} + +bool qemu_chr_fe_backend_open(CharBackend *be) +{ + return be->chr && be->chr->be_open; +} + bool qemu_chr_fe_init(CharBackend *b, Chardev *s, Error **errp) { int tag = 0; @@ -216,7 +228,7 @@ void qemu_chr_fe_deinit(CharBackend *b, bool del) assert(b); if (b->chr) { - qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true); + qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, NULL, true); if (b->chr->be == b) { b->chr->be = NULL; } @@ -235,6 +247,7 @@ void qemu_chr_fe_set_handlers(CharBackend *b, IOCanReadHandler *fd_can_read, IOReadHandler *fd_read, IOEventHandler *fd_event, + BackendChangeHandler *be_change, void *opaque, GMainContext *context, bool set_open) @@ -258,6 +271,7 @@ void qemu_chr_fe_set_handlers(CharBackend *b, b->chr_can_read = fd_can_read; b->chr_read = fd_read; b->chr_event = fd_event; + b->chr_be_change = be_change; b->opaque = opaque; if (cc->chr_update_read_handler) { cc->chr_update_read_handler(s, context); |