1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
15 	struct completion ready;  member
21 static irqreturn_t xterm_interrupt(int irq, void *data)  in xterm_interrupt()  argument
23 	struct xterm_wait *xterm = data;  in xterm_interrupt()
24 	int fd = -1, n_fds = 1;  in xterm_interrupt()
27 	ret = os_rcv_fd_msg(xterm->fd, &fd, n_fds,  in xterm_interrupt()
28 			    &xterm->pid, sizeof(xterm->pid));  in xterm_interrupt()
29 	if (ret == -EAGAIN)  in xterm_interrupt()
34 	else if (ret != sizeof(xterm->pid))  in xterm_interrupt()
35 		fd = -EMSGSIZE;  in xterm_interrupt()
37 	xterm->new_fd = fd;  in xterm_interrupt()
38 	complete(&xterm->ready);  in xterm_interrupt()
45 	struct xterm_wait *data;  in xterm_fd()  local
48 	data = kmalloc(sizeof(*data), GFP_KERNEL);  in xterm_fd()
49 	if (data == NULL) {  in xterm_fd()
51 		return -ENOMEM;  in xterm_fd()
55 	*data = ((struct xterm_wait) { .fd 		= socket,  in xterm_fd()
56 				       .pid 		= -1,  in xterm_fd()
57 				       .new_fd	 	= -1 });  in xterm_fd()
58 	init_completion(&data->ready);  in xterm_fd()
61 			     IRQF_SHARED, "xterm", data);  in xterm_fd()
73 	wait_for_completion(&data->ready);  in xterm_fd()
75 	um_free_irq(XTERM_IRQ, data);  in xterm_fd()
77 	ret = data->new_fd;  in xterm_fd()
78 	*pid_out = data->pid;  in xterm_fd()
80 	kfree(data);  in xterm_fd()