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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2019, Joyent, Inc.
*/
/*
* Verify that if we've grabbed an exclusive lock, another thread fails to grab
* it as a non-blocking lock.
*/
#include <err.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>
#include <unistd.h>
#include <sys/debug.h>
#include <thread.h>
#include <errno.h>
#include <sys/usb/clients/ccid/uccid.h>
void *
nonblock_thread(void *arg)
{
uccid_cmd_txn_begin_t begin;
int ret;
int fd = (uintptr_t)arg;
bzero(&begin, sizeof (begin));
begin.uct_version = UCCID_CURRENT_VERSION;
begin.uct_flags = UCCID_TXN_DONT_BLOCK;
ret = ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin);
VERIFY3S(ret, ==, -1);
VERIFY3S(errno, ==, EBUSY);
return (NULL);
}
int
main(int argc, char *argv[])
{
int fda, fdb;
uccid_cmd_txn_begin_t begin;
uccid_cmd_txn_end_t end;
thread_t thr;
if (argc != 2) {
errx(EXIT_FAILURE, "missing required ccid path");
}
if ((fda = open(argv[1], O_RDWR)) < 0) {
err(EXIT_FAILURE, "failed to open %s", argv[1]);
}
if ((fdb = open(argv[1], O_RDWR)) < 0) {
err(EXIT_FAILURE, "failed to open %s", argv[1]);
}
bzero(&begin, sizeof (begin));
bzero(&end, sizeof (end));
begin.uct_version = UCCID_CURRENT_VERSION;
end.uct_version = UCCID_CURRENT_VERSION;
end.uct_flags = UCCID_TXN_END_RELEASE;
if (ioctl(fda, UCCID_CMD_TXN_BEGIN, &begin) != 0) {
err(EXIT_FAILURE, "failed to issue begin ioctl");
}
if (thr_create(NULL, 0, nonblock_thread, (void *)(uintptr_t)fdb, 0,
&thr) != 0) {
err(EXIT_FAILURE, "failed to create thread");
}
if (thr_join(thr, NULL, NULL) != 0) {
err(EXIT_FAILURE, "failed to join therad");
}
if (ioctl(fda, UCCID_CMD_TXN_END, &end) != 0) {
err(EXIT_FAILURE, "failed to issue end ioctl");
}
return (0);
}
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