Reviewed by: asomers Obtained from: CheriBSD MFC after: 1 week Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D20989
190 lines
5.4 KiB
C
190 lines
5.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2017 Spectra Logic Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Test cases for operations on DIR objects:
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* opendir, readdir, seekdir, telldir, closedir, etc
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <atf-c.h>
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ATF_TC(telldir_after_seekdir);
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ATF_TC_HEAD(telldir_after_seekdir, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Calling telldir(3) after seekdir(3) "
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"should return the argument passed to seekdir.");
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}
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ATF_TC_BODY(telldir_after_seekdir, tc)
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{
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const int NUMFILES = 1000;
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char template[] = "dXXXXXX";
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char *tmpdir;
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int i, dirfd;
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DIR *dirp;
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struct dirent *de;
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long beginning, middle, end, td;
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/* Create a temporary directory */
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tmpdir = mkdtemp(template);
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ATF_REQUIRE_MSG(tmpdir != NULL, "mkdtemp failed");
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dirfd = open(tmpdir, O_RDONLY | O_DIRECTORY);
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ATF_REQUIRE(dirfd > 0);
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/*
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* Fill it with files. Must be > 128 to ensure that the directory
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* can't fit within a single page
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*/
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for (i = 0; i < NUMFILES; i = i+1) {
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int fd;
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char filename[16];
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snprintf(filename, sizeof(filename), "%d", i);
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fd = openat(dirfd, filename, O_WRONLY | O_CREAT, 0600);
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ATF_REQUIRE(fd > 0);
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close(fd);
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}
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/* Get some directory bookmarks in various locations */
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dirp = fdopendir(dirfd);
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ATF_REQUIRE_MSG(dirfd >= 0, "fdopendir failed");
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beginning = telldir(dirp);
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for (i = 0; i < NUMFILES / 2; i = i+1) {
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de = readdir(dirp);
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ATF_REQUIRE_MSG(de != NULL, "readdir failed");
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}
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middle = telldir(dirp);
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for (; i < NUMFILES - 1; i = i+1) {
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de = readdir(dirp);
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ATF_REQUIRE_MSG(de != NULL, "readdir failed");
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}
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end = telldir(dirp);
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/*
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* Seekdir to each bookmark, check the telldir after seekdir condition,
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* and check that the bookmark is valid by reading another directory
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* entry.
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*/
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seekdir(dirp, beginning);
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td = telldir(dirp);
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ATF_CHECK_EQ(beginning, td);
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ATF_REQUIRE_MSG(NULL != readdir(dirp), "invalid directory index");
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seekdir(dirp, middle);
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td = telldir(dirp);
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ATF_CHECK_EQ(middle, td);
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ATF_REQUIRE_MSG(NULL != readdir(dirp), "invalid directory index");
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seekdir(dirp, end);
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td = telldir(dirp);
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ATF_CHECK_EQ(end, td);
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ATF_REQUIRE_MSG(NULL != readdir(dirp), "invalid directory index");
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closedir(dirp);
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}
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ATF_TC(telldir_at_end_of_block);
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ATF_TC_HEAD(telldir_at_end_of_block, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Calling telldir(3) after readdir(3) read the last entry in the block should return a valid location");
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}
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ATF_TC_BODY(telldir_at_end_of_block, tc)
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{
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/* For UFS and ZFS, blocks roll over at 128 directory entries. */
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const int NUMFILES = 129;
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char template[] = "dXXXXXX";
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char *tmpdir;
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int i, dirfd;
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DIR *dirp;
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struct dirent *de;
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long td;
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char last_filename[16];
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/* Create a temporary directory */
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tmpdir = mkdtemp(template);
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ATF_REQUIRE_MSG(tmpdir != NULL, "mkdtemp failed");
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dirfd = open(tmpdir, O_RDONLY | O_DIRECTORY);
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ATF_REQUIRE(dirfd > 0);
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/*
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* Fill it with files. Must be > 128 to ensure that the directory
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* can't fit within a single page. The "-2" accounts for "." and ".."
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*/
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for (i = 0; i < NUMFILES - 2; i = i+1) {
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int fd;
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char filename[16];
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snprintf(filename, sizeof(filename), "%d", i);
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fd = openat(dirfd, filename, O_WRONLY | O_CREAT, 0600);
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ATF_REQUIRE(fd > 0);
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close(fd);
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}
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/* Read all entries within the first page */
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dirp = fdopendir(dirfd);
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ATF_REQUIRE_MSG(dirfd >= 0, "fdopendir failed");
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for (i = 0; i < NUMFILES - 1; i = i + 1)
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ATF_REQUIRE_MSG(readdir(dirp) != NULL, "readdir failed");
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/* Call telldir at the end of a page */
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td = telldir(dirp);
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/* Read the last entry */
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de = readdir(dirp);
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ATF_REQUIRE_MSG(de != NULL, "readdir failed");
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strlcpy(last_filename, de->d_name, sizeof(last_filename));
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/* Seek back to the bookmark. readdir() should return the last entry */
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seekdir(dirp, td);
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de = readdir(dirp);
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ATF_REQUIRE_STREQ_MSG(last_filename, de->d_name,
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"seekdir went to the wrong directory position");
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closedir(dirp);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, telldir_after_seekdir);
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ATF_TP_ADD_TC(tp, telldir_at_end_of_block);
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return atf_no_error();
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}
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