tests/lib/libc/sys/t_fsync.c

   1 /* $NetBSD: t_fsync.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jukka Ruohonen.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_fsync.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $");
  33
  34 #include <errno.h>
  35 #include <fcntl.h>
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40
  41 #include <atf-c.h>
  42
  43 ATF_TC(fsync_err);
  44 ATF_TC_HEAD(fsync_err, tc)
  45 {
  46         atf_tc_set_md_var(tc, "descr",
  47             "Test error conditions of fsync(2) (PR kern/30)");
  48 }
  49
  50 ATF_TC_BODY(fsync_err, tc)
  51 {
  52         int i, fd[2];
  53
  54         /*
  55          * The fsync(2) call should fail with EBADF
  56          * when the 'fd' is not a valid descriptor.
  57          */
  58         for (i = 1; i < 1024; i = i + 128) {
  59
  60                 errno = 0;
  61
  62                 ATF_REQUIRE(fsync(-i) == -1);
  63                 ATF_REQUIRE(errno == EBADF);
  64         }
  65
  66         /*
  67          * On the other hand, EINVAL should follow
  68          * if the operation is not possible with
  69          * the file descriptor.
  70          */
  71         ATF_REQUIRE(pipe(fd) == 0);
  72
  73         errno = 0;
  74
  75         ATF_REQUIRE(fsync(fd[0]) == -1);
  76         ATF_REQUIRE(errno == EINVAL);
  77
  78         errno = 0;
  79
  80         ATF_REQUIRE(fsync(fd[1]) == -1);
  81         ATF_REQUIRE(errno == EINVAL);
  82
  83         ATF_REQUIRE(close(fd[0]) == 0);
  84         ATF_REQUIRE(close(fd[1]) == 0);
  85 }
  86
  87 ATF_TC(fsync_sync);
  88 ATF_TC_HEAD(fsync_sync, tc)
  89 {
  90         atf_tc_set_md_var(tc, "descr", "A basic test of fsync(2)");
  91 }
  92
  93 ATF_TC_BODY(fsync_sync, tc)
  94 {
  95         char buf[128];
  96         int fd, i;
  97
  98         for (i = 0; i < 10; i++) {
  99
 100                 (void)snprintf(buf, sizeof(buf), "t_fsync-%d", i);
 101
 102                 fd = mkstemp(buf);
 103
 104                 ATF_REQUIRE(fd != -1);
 105                 ATF_REQUIRE(write(fd, "0", 1) == 1);
 106                 ATF_REQUIRE(fsync(fd) == 0);
 107
 108                 ATF_REQUIRE(unlink(buf) == 0);
 109                 ATF_REQUIRE(close(fd) == 0);
 110         }
 111 }
 112
 113 ATF_TP_ADD_TCS(tp)
 114 {
 115
 116         ATF_TP_ADD_TC(tp, fsync_err);
 117         ATF_TP_ADD_TC(tp, fsync_sync);
 118
 119         return atf_no_error();
 120 }