int qemu_set_fd_handler(int fd, IOHandler *fd_read, IOHandler *fd_write, void *opaque) { static IOTrampoline fd_trampolines[FD_SETSIZE]; IOTrampoline *tramp = &fd_trampolines[fd]; if (tramp->tag != 0) { g_io_channel_unref(tramp->chan); g_source_remove(tramp->tag); } if (opaque) { GIOCondition cond = 0; tramp->fd_read = fd_read; tramp->fd_write = fd_write; tramp->opaque = opaque; if (fd_read) { cond |= G_IO_IN | G_IO_ERR; } if (fd_write) { cond |= G_IO_OUT | G_IO_ERR; } tramp->chan = g_io_channel_unix_new(fd); tramp->tag = g_io_add_watch(tramp->chan, cond, fd_trampoline, tramp); } return 0; }