diff options
| -rw-r--r-- | include/sysemu/char.h | 50 | ||||
| -rw-r--r-- | qemu-char.c | 50 |
2 files changed, 100 insertions, 0 deletions
diff --git a/include/sysemu/char.h b/include/sysemu/char.h index 36b5d30890..c518c2ff01 100644 --- a/include/sysemu/char.h +++ b/include/sysemu/char.h @@ -72,6 +72,12 @@ typedef enum { QEMU_CHAR_FEATURE_LAST, } CharDriverFeature; +/* This is the backend as seen by frontend, the actual backend is + * CharDriverState */ +typedef struct CharBackend { + CharDriverState *chr; + int tag; +} CharBackend; struct CharDriverState { QemuMutex chr_write_lock; @@ -156,6 +162,8 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend); * Returns: a new character backend */ CharDriverState *qemu_chr_new(const char *label, const char *filename); + + /** * @qemu_chr_disconnect: * @@ -425,6 +433,48 @@ void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len); */ void qemu_chr_be_event(CharDriverState *s, int event); +/** + * @qemu_chr_fe_init: + * + * Initializes a front end for the given CharBackend and CharDriver. + * + * Returns: false on error. + */ +bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp); + +/** + * @qemu_chr_fe_get_driver: + * + * Returns the driver associated with a CharBackend or NULL. + */ +CharDriverState *qemu_chr_fe_get_driver(CharBackend *be); + +/** + * @qemu_chr_fe_set_handlers: + * @b: a CharBackend + * @fd_can_read: callback to get the amount of data the frontend may + * receive + * @fd_read: callback to receive data from char + * @fd_event: event callback + * @opaque: an opaque pointer for the callbacks + * @context: a main loop context or NULL for the default + * + * Set the front end char handlers. + */ +void qemu_chr_fe_set_handlers(CharBackend *b, + IOCanReadHandler *fd_can_read, + IOReadHandler *fd_read, + IOEventHandler *fd_event, + void *opaque, + GMainContext *context); + +/** + * @qemu_chr_fe_take_focus: + * + * Take the focus (if the front end is muxed) + */ +void qemu_chr_fe_take_focus(CharBackend *b); + void qemu_chr_add_handlers(CharDriverState *s, IOCanReadHandler *fd_can_read, IOReadHandler *fd_read, diff --git a/qemu-char.c b/qemu-char.c index 29b339fd32..9c27371e3c 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -910,6 +910,53 @@ static CharDriverState *qemu_chr_open_mux(const char *id, return chr; } +CharDriverState *qemu_chr_fe_get_driver(CharBackend *be) +{ + return be->chr; +} + +bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp) +{ + int tag = 0; + + if (s->is_mux) { + tag = mux_chr_new_handler_tag(s, errp); + if (tag < 0) { + return false; + } + } + + b->tag = tag; + b->chr = s; + + return true; +} + +void qemu_chr_fe_set_handlers(CharBackend *b, + IOCanReadHandler *fd_can_read, + IOReadHandler *fd_read, + IOEventHandler *fd_event, + void *opaque, + GMainContext *context) +{ + if (!b->chr) { + return; + } + + qemu_chr_set_handlers(b->chr, fd_can_read, fd_read, + fd_event, opaque, context, b->tag); + + if (b->chr->is_mux) { + mux_chr_set_handlers(b->chr, context); + } +} + +void qemu_chr_fe_take_focus(CharBackend *b) +{ + if (b->chr->is_mux) { + mux_set_focus(b->chr->opaque, b->tag); + } +} typedef struct IOWatchPoll { @@ -4184,6 +4231,9 @@ void qemu_chr_disconnect(CharDriverState *chr) static void qemu_chr_free_common(CharDriverState *chr) { + if (chr->be) { + chr->be->chr = NULL; + } g_free(chr->filename); g_free(chr->label); if (chr->logfd != -1) { |