1*a61ed2ceSHans Rosenfeld /*
2*a61ed2ceSHans Rosenfeld  * This file and its contents are supplied under the terms of the
3*a61ed2ceSHans Rosenfeld  * Common Development and Distribution License ("CDDL"), version 1.0.
4*a61ed2ceSHans Rosenfeld  * You may only use this file in accordance with the terms of version
5*a61ed2ceSHans Rosenfeld  * 1.0 of the CDDL.
6*a61ed2ceSHans Rosenfeld  *
7*a61ed2ceSHans Rosenfeld  * A full copy of the text of the CDDL should have accompanied this
8*a61ed2ceSHans Rosenfeld  * source.  A copy of the CDDL is also available via the Internet at
9*a61ed2ceSHans Rosenfeld  * http://www.illumos.org/license/CDDL.
10*a61ed2ceSHans Rosenfeld  */
11*a61ed2ceSHans Rosenfeld 
12*a61ed2ceSHans Rosenfeld /*
13*a61ed2ceSHans Rosenfeld  * Copyright 2019, Joyent, Inc.
14*a61ed2ceSHans Rosenfeld  */
15*a61ed2ceSHans Rosenfeld 
16*a61ed2ceSHans Rosenfeld /*
17*a61ed2ceSHans Rosenfeld  * Verify that if we've grabbed an exclusive lock, another thread fails to grab
18*a61ed2ceSHans Rosenfeld  * it as a non-blocking lock.
19*a61ed2ceSHans Rosenfeld  */
20*a61ed2ceSHans Rosenfeld 
21*a61ed2ceSHans Rosenfeld #include <err.h>
22*a61ed2ceSHans Rosenfeld #include <stdlib.h>
23*a61ed2ceSHans Rosenfeld #include <sys/types.h>
24*a61ed2ceSHans Rosenfeld #include <sys/stat.h>
25*a61ed2ceSHans Rosenfeld #include <fcntl.h>
26*a61ed2ceSHans Rosenfeld #include <strings.h>
27*a61ed2ceSHans Rosenfeld #include <unistd.h>
28*a61ed2ceSHans Rosenfeld #include <sys/debug.h>
29*a61ed2ceSHans Rosenfeld #include <thread.h>
30*a61ed2ceSHans Rosenfeld #include <errno.h>
31*a61ed2ceSHans Rosenfeld 
32*a61ed2ceSHans Rosenfeld #include <sys/usb/clients/ccid/uccid.h>
33*a61ed2ceSHans Rosenfeld 
34*a61ed2ceSHans Rosenfeld void *
nonblock_thread(void * arg)35*a61ed2ceSHans Rosenfeld nonblock_thread(void *arg)
36*a61ed2ceSHans Rosenfeld {
37*a61ed2ceSHans Rosenfeld 	uccid_cmd_txn_begin_t begin;
38*a61ed2ceSHans Rosenfeld 	int ret;
39*a61ed2ceSHans Rosenfeld 	int fd = (uintptr_t)arg;
40*a61ed2ceSHans Rosenfeld 
41*a61ed2ceSHans Rosenfeld 
42*a61ed2ceSHans Rosenfeld 	bzero(&begin, sizeof (begin));
43*a61ed2ceSHans Rosenfeld 
44*a61ed2ceSHans Rosenfeld 	begin.uct_version = UCCID_CURRENT_VERSION;
45*a61ed2ceSHans Rosenfeld 	begin.uct_flags = UCCID_TXN_DONT_BLOCK;
46*a61ed2ceSHans Rosenfeld 
47*a61ed2ceSHans Rosenfeld 	ret = ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin);
48*a61ed2ceSHans Rosenfeld 	VERIFY3S(ret, ==, -1);
49*a61ed2ceSHans Rosenfeld 	VERIFY3S(errno, ==, EBUSY);
50*a61ed2ceSHans Rosenfeld 
51*a61ed2ceSHans Rosenfeld 	return (NULL);
52*a61ed2ceSHans Rosenfeld }
53*a61ed2ceSHans Rosenfeld 
54*a61ed2ceSHans Rosenfeld int
main(int argc,char * argv[])55*a61ed2ceSHans Rosenfeld main(int argc, char *argv[])
56*a61ed2ceSHans Rosenfeld {
57*a61ed2ceSHans Rosenfeld 	int fda, fdb;
58*a61ed2ceSHans Rosenfeld 	uccid_cmd_txn_begin_t begin;
59*a61ed2ceSHans Rosenfeld 	uccid_cmd_txn_end_t end;
60*a61ed2ceSHans Rosenfeld 	thread_t thr;
61*a61ed2ceSHans Rosenfeld 
62*a61ed2ceSHans Rosenfeld 	if (argc != 2) {
63*a61ed2ceSHans Rosenfeld 		errx(EXIT_FAILURE, "missing required ccid path");
64*a61ed2ceSHans Rosenfeld 	}
65*a61ed2ceSHans Rosenfeld 
66*a61ed2ceSHans Rosenfeld 	if ((fda = open(argv[1], O_RDWR)) < 0) {
67*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to open %s", argv[1]);
68*a61ed2ceSHans Rosenfeld 	}
69*a61ed2ceSHans Rosenfeld 
70*a61ed2ceSHans Rosenfeld 	if ((fdb = open(argv[1], O_RDWR)) < 0) {
71*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to open %s", argv[1]);
72*a61ed2ceSHans Rosenfeld 	}
73*a61ed2ceSHans Rosenfeld 
74*a61ed2ceSHans Rosenfeld 	bzero(&begin, sizeof (begin));
75*a61ed2ceSHans Rosenfeld 	bzero(&end, sizeof (end));
76*a61ed2ceSHans Rosenfeld 
77*a61ed2ceSHans Rosenfeld 	begin.uct_version = UCCID_CURRENT_VERSION;
78*a61ed2ceSHans Rosenfeld 	end.uct_version = UCCID_CURRENT_VERSION;
79*a61ed2ceSHans Rosenfeld 	end.uct_flags = UCCID_TXN_END_RELEASE;
80*a61ed2ceSHans Rosenfeld 
81*a61ed2ceSHans Rosenfeld 	if (ioctl(fda, UCCID_CMD_TXN_BEGIN, &begin) != 0) {
82*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to issue begin ioctl");
83*a61ed2ceSHans Rosenfeld 	}
84*a61ed2ceSHans Rosenfeld 
85*a61ed2ceSHans Rosenfeld 	if (thr_create(NULL, 0, nonblock_thread, (void *)(uintptr_t)fdb, 0,
86*a61ed2ceSHans Rosenfeld 	    &thr) != 0) {
87*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to create thread");
88*a61ed2ceSHans Rosenfeld 	}
89*a61ed2ceSHans Rosenfeld 
90*a61ed2ceSHans Rosenfeld 	if (thr_join(thr, NULL, NULL) != 0) {
91*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to join therad");
92*a61ed2ceSHans Rosenfeld 	}
93*a61ed2ceSHans Rosenfeld 
94*a61ed2ceSHans Rosenfeld 	if (ioctl(fda, UCCID_CMD_TXN_END, &end) != 0) {
95*a61ed2ceSHans Rosenfeld 		err(EXIT_FAILURE, "failed to issue end ioctl");
96*a61ed2ceSHans Rosenfeld 	}
97*a61ed2ceSHans Rosenfeld 
98*a61ed2ceSHans Rosenfeld 	return (0);
99*a61ed2ceSHans Rosenfeld }