1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2019, Joyent, Inc.
14 */
15
16 /*
17 * Verify that if a child grabs an exclusive lock and calls exit, we can grab it
18 * again.
19 */
20
21 #include <err.h>
22 #include <stdlib.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <fcntl.h>
26 #include <strings.h>
27 #include <unistd.h>
28 #include <errno.h>
29 #include <sys/wait.h>
30
31 #include <sys/usb/clients/ccid/uccid.h>
32
33 int
main(int argc,char * argv[])34 main(int argc, char *argv[])
35 {
36 int fd, estat;
37 pid_t pid;
38 uccid_cmd_txn_begin_t begin;
39
40 if (argc != 2) {
41 errx(EXIT_FAILURE, "missing required ccid path");
42 }
43
44 bzero(&begin, sizeof (begin));
45 begin.uct_version = UCCID_CURRENT_VERSION;
46
47 pid = fork();
48 if (pid == 0) {
49 fd = open(argv[1], O_RDWR);
50 if (fd < 0) {
51 err(EXIT_FAILURE, "failed to open %s", argv[1]);
52 }
53
54 if (ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin) != 0) {
55 err(EXIT_FAILURE, "failed to issue begin ioctl");
56 }
57
58 _exit(0);
59 }
60
61 estat = -1;
62 if (waitpid(pid, &estat, 0) == -1) {
63 err(EXIT_FAILURE, "failed to wait for pid %" _PRIdID, pid);
64 }
65
66 if (estat != 0) {
67 errx(EXIT_FAILURE, "child exited with non-zero value (%d)",
68 estat);
69 }
70
71 fd = open(argv[1], O_RDWR);
72 if (fd < 0) {
73 err(EXIT_FAILURE, "failed to open %s", argv[1]);
74 }
75
76 if (ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin) != 0) {
77 err(EXIT_FAILURE, "failed to issue begin ioctl");
78 }
79
80 return (0);
81 }
82