NetBSD/tests/kernel/kqueue/read/t_file.c

140 lines
3.5 KiB
C

/* $NetBSD: t_file.c,v 1.3 2010/11/07 17:51:20 jmmv Exp $ */
/*-
* Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_file.c,v 1.3 2010/11/07 17:51:20 jmmv Exp $");
#include <sys/param.h>
#include <sys/event.h>
#include <sys/mount.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <atf-c.h>
#include "../../../h_macros.h"
#define FILENAME "file"
#define NLINES 5
static void
child(void)
{
int i, n, fd;
(void)sleep(1);
for (i = 0; i < NLINES; ++i) {
fd = open(FILENAME, O_WRONLY|O_APPEND, 0644);
if (fd < 0)
err(EXIT_FAILURE, "open()");
n = write(fd, "foo\n", 4);
if (n < 0)
err(EXIT_FAILURE, "write()");
(void)close(fd);
(void)sleep(1);
}
_exit(0);
}
ATF_TC(file);
ATF_TC_HEAD(file, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ on regular file");
}
ATF_TC_BODY(file, tc)
{
char buffer[128];
struct kevent event[1];
pid_t pid;
int fd, kq, n, num, status;
RL(pid = fork());
if (pid == 0) {
child();
/* NOTREACHED */
}
RL(fd = open(FILENAME, O_RDONLY|O_CREAT, 0644));
#if 1 /* XXX: why was this disabled? */
RL(lseek(fd, 0, SEEK_END));
#endif
RL(kq = kqueue());
EV_SET(&event[0], fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
RL(kevent(kq, event, 1, NULL, 0, NULL));
for (num = 0; num < NLINES;) {
RL(n = kevent(kq, NULL, 0, event, 1, NULL));
num += n;
(void)printf("kevent num %d flags: %#x, fflags: %#x, data: "
"%" PRId64 "\n", n, event[0].flags, event[0].fflags,
event[0].data);
if (event[0].data < 0)
#if 1 /* XXXLUKEM */
RL(lseek(fd, 0, SEEK_END));
#else
RL(lseek(fd, event[0].data, SEEK_END));
#endif
RL(n = read(fd, buffer, 128));
buffer[n] = '\0';
(void)printf("file(%d): %s", num, buffer);
}
(void)waitpid(pid, &status, 0);
(void)printf("read: successful end\n");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, file);
return atf_no_error();
}