LTP 第三章开发系统调用测试集

红太狼 2022-06-07 03:54 199阅读 0赞

**LTP系列链接：**

[第一章 LTP介绍及内部机制][LTP]

[第二章 开发Shell测试集][_Shell]

[第三章 开发系统调用测试集][Link 1]

[第四章 开发\_exit()测试集][_exit]

[第五章 开发IO操作测试集][_IO]

[第六章 开发IO阻塞测试集][_IO 1]

--------------------

### 文章目录 ###

*   *   *  3.1 Convert getpagesize01
         *   *  3.1.1 重写代码
             *  3.1.2 提交 git
             *  3.1.3 生成 patch 并校验
         *  3.2 Convert getpid01
         *   *  3.2.1 重写代码
             *  3.2.2 提交 git
             *  3.2.3 生成 patch 并校验
         *  3.3 Convert unlink05
         *   *  3.3.1 重写代码
             *  3.3.2 提交 git
             *  3.3.3 生成 patch 并校验
         *  3.4 Convert getppid02
         *   *  3.4.1 重写代码
             *  3.4.2 提交 git
             *  3.4.3 生成 patch 并校验

在第二章中我们写了 Shell 测试集，在本章，我们将开发基于 C 的系统调用测试集,使用新 API 重写既有的测试 case ,整个流程与上一章基本相同，不再赘述。

在本章中，我们将编写以下几个测试：

*  Convert getpagesize01
 *  Convert getpid01
 *  Convert unlink05
 *  Convert getppid02

在开始之前，保证工作区的干净：

[wxs@bogon ltp]$ git status
    # 位于分支 master
    无文件要提交，干净的工作区

> 源码地址：[https://github.com/jitwxs/blog\_sample][https_github.com_jitwxs_blog_sample]

### 3.1 Convert getpagesize01 ###

#### 3.1.1 重写代码 ####

进入 `getpagesize` 目录，删除原有 getpagesize01 文件，并重写 `getpagesize01.c`：

[wxs@bogon ltp]$ cd testcases/kernel/syscalls/getpagesize/
    [wxs@bogon getpagesize]$ ls
    getpagesize01  getpagesize01.c  Makefile
    [wxs@bogon getpagesize]$ rm getpagesize01*
    [wxs@bogon getpagesize]$ vim getpagesize01.c

/* * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc. */
    /********************************************************** * * TEST IDENTIFIER : getpagesize01 * * TEST TITLE : Basic tests for getpagesize(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * This is a Phase I test for the getpagesize(2) system call. * It is intended to provide a limited exposure of the system call. * **********************************************************/
    
    #include <errno.h>
    #include "tst_test.h"
    
    static void testGetpagesize(void)
    { 
        int size, ret_sysconf;
    
        TEST(getpagesize());
    
        if (TEST_RETURN == -1) { 
            tst_res(TFAIL | TTERRNO, "getpagesize failed");
        } else { 
            size = getpagesize();
            tst_res(TINFO, "Page Size is %d", size);
            ret_sysconf = sysconf(_SC_PAGESIZE);
            if (size == ret_sysconf)
                tst_res(TPASS,
                        "getpagesize - Page size returned %d",
                        ret_sysconf);
            else
                tst_res(TFAIL,
                        "getpagesize - Page size returned %d",
                        ret_sysconf);
        }
    }
    
    static struct tst_test test = { 
        .test_all = testGetpagesize
    };

`make`并测试正确性：

[wxs@bogon getpagesize]$ make
    make -C "/home/wxs/ltp/lib" -f "/home/wxs/ltp/lib/Makefile" all
    make[1]: 进入目录“/home/wxs/ltp/lib”
    make[2]: 进入目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 进入目录“/home/wxs/ltp/lib/tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/tests”
    make[1]: 离开目录“/home/wxs/ltp/lib”
    gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -Wold-style-definition -D_FORTIFY_SOURCE=2 -I../../../../include -I../../../../include -I../../../../include/old/   -L../../../../lib  getpagesize01.c   -lltp -o getpagesize01
    [wxs@bogon getpagesize]$ ./getpagesize01 
    tst_test.c:934: INFO: Timeout per run is 0h 05m 00s
    getpagesize01.c:44: INFO: Page Size is 4096
    getpagesize01.c:49: PASS: getpagesize - Page size returned 4096
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 3.1.2 提交 git ####

[wxs@bogon getpagesize]$ cd ~/ltp
    [wxs@bogon ltp]$ git status
    # 位于分支 mybranch
    # 尚未暂存以备提交的变更：
    # （使用 "git add <file>..." 更新要提交的内容）
    # （使用 "git checkout -- <file>..." 丢弃工作区的改动）
    #
    # 修改： testcases/kernel/syscalls/getpagesize/getpagesize01.c
    #
    # 未跟踪的文件:
    # （使用 "git add <file>..." 以包含要提交的内容）
    #
    # testcases/kernel/log
    修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）
    [wxs@bogon ltp]$ git add testcases/kernel/syscalls/getpagesize/getpagesize01.c
    [wxs@bogon ltp]$ git commit -s -m "syscalls/getpagesize: Convert to new API for test getpagesize(2)"
    [mybranch 3c7efcb] syscalls/getpagesize: Convert to new API for test getpagesize(2)
     1 file changed, 60 insertions(+), 105 deletions(-)
     rewrite testcases/kernel/syscalls/getpagesize/getpagesize01.c (90%)

#### 3.1.3 生成 patch 并校验 ####

[wxs@bogon ltp]$ git format-patch -1
    0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch
    [wxs@bogon ltp]$ ../linux/scripts/checkpatch.pl 0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch 
    total: 0 errors, 0 warnings, 132 lines checked
    
    0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch has no obvious style problems and is ready for submission.

### 3.2 Convert getpid01 ###

#### 3.2.1 重写代码 ####

进入 `getpagesize` 目录，删除原有 getpid01 文件，并重写 `getpid01.c`：

[wxs@bogon ltp]$ cd testcases/kernel/syscalls/getpid/
    [wxs@bogon getpid]$ ls
    getpid01  getpid01.c  getpid02  getpid02.c  Makefile
    [wxs@bogon getpid]$ rm getpid01*
    [wxs@bogon getpid]$ vim getpid01.c

`make` 并测试正确性：

[wxs@bogon getpid]$ make
    make -C "/home/wxs/ltp/lib" -f "/home/wxs/ltp/lib/Makefile" all
    make[1]: 进入目录“/home/wxs/ltp/lib”
    make[2]: 进入目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 进入目录“/home/wxs/ltp/lib/tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/tests”
    make[1]: 离开目录“/home/wxs/ltp/lib”
    gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -Wold-style-definition -D_FORTIFY_SOURCE=2 -I../../../../include -I../../../../include -I../../../../include/old/   -L../../../../lib  getpid01.c   -lltp -o getpid01
    [wxs@bogon getpid]$ ./getpid01 
    tst_test.c:934: INFO: Timeout per run is 0h 05m 00s
    getpid01.c:41: PASS: getpid returned 17650
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 3.2.2 提交 git ####

[wxs@bogon getpid]$ cd ~/ltp/
    [wxs@bogon ltp]$ git status
    # 位于分支 mybranch
    # 尚未暂存以备提交的变更：
    # （使用 "git add <file>..." 更新要提交的内容）
    # （使用 "git checkout -- <file>..." 丢弃工作区的改动）
    #
    # 修改： testcases/kernel/syscalls/getpid/getpid01.c
    #
    # 未跟踪的文件:
    # （使用 "git add <file>..." 以包含要提交的内容）
    #
    # testcases/kernel/log
    修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）
    [wxs@bogon ltp]$ git add testcases/kernel/syscalls/getpid/getpid01.c
    [wxs@bogon ltp]$ git commit -s -m "syscalls/getpid: Convert to new API for test getpid(2)"
    [mybranch 6b82447] syscalls/getpid: Convert to new API for test getpid(2)
     1 file changed, 47 insertions(+), 158 deletions(-)
     rewrite testcases/kernel/syscalls/getpid/getpid01.c (83%)

#### 3.2.3 生成 patch 并校验 ####

[wxs@bogon ltp]$ git format-patch -2
    0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch
    0002-syscalls-getpid-Convert-to-new-API-for-test-getpid-2.patch
    [wxs@bogon ltp]$ ../linux/scripts/checkpatch.pl 0002-syscalls-getpid-Convert-to-new-API-for-test-getpid-2.patch
    total: 0 errors, 0 warnings, 173 lines checked
    
    0002-syscalls-getpid-Convert-to-new-API-for-test-getpid-2.patch has no obvious style problems and is ready for submission.

### 3.3 Convert unlink05 ###

#### 3.3.1 重写代码 ####

进入 `unlink`目录，删除原有 unlink05 文件，并重写 `unlink05.c`：

[wxs@bogon ltp]$ cd testcases/kernel/syscalls/unlink
    [wxs@bogon unlink]$ ls
    Makefile  unlink05.c  unlink06.c  unlink07.c  unlink08.c
    unlink05  unlink06    unlink07    unlink08
    [wxs@bogon unlink]$ rm unlink05*
    [wxs@bogon unlink]$ vim unlink05.c

/* * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc. */
    /********************************************************** * * TEST IDENTIFIER : unlink05 * * TEST TITLE : Basic tests for unlink(1) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * It should/will be extended when full functional tests are written for * unlink(2). * **********************************************************/
    
    #include <errno.h>
    #include "tst_test.h"
    
    #define TMPFILE "tmpfile"
    
    static void testUnlink(void)
    { 
        TEST(unlink(TMPFILE));
    
        if (TEST_RETURN == -1 || access(TMPFILE, F_OK) == 0)
            tst_res(TFAIL | TTERRNO, "unlink(%s) Failed, errno=%d : %s",
                    TMPFILE, TEST_ERRNO, strerror(TEST_ERRNO));
        else
            tst_res(TPASS, "unlink(%s) returned %ld",
                    TMPFILE, TEST_RETURN);
    }
    
    static void setup(void)
    { 
        SAFE_TOUCH(TMPFILE, 0777, NULL);
    }
    
    static struct tst_test test = { 
        .needs_tmpdir = 1,
        .setup = setup,
        .test_all = testUnlink
    };

`make` 并测试正确性：

[wxs@bogon unlink]$ make
    make -C "/home/wxs/ltp/lib" -f "/home/wxs/ltp/lib/Makefile" all
    make[1]: 进入目录“/home/wxs/ltp/lib”
    make[2]: 进入目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 进入目录“/home/wxs/ltp/lib/tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/tests”
    make[1]: 离开目录“/home/wxs/ltp/lib”
    gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -Wold-style-definition -D_FORTIFY_SOURCE=2 -I../../../../include -I../../../../include -I../../../../include/old/   -L../../../../lib  unlink05.c   -lltp -o unlink05
    [wxs@bogon unlink]$ ./unlink05 
    tst_test.c:934: INFO: Timeout per run is 0h 05m 00s
    unlink05.c:45: PASS: unlink(tmpfile) returned 0
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 3.3.2 提交 git ####

[wxs@bogon unlink]$ cd ~/ltp/
    [wxs@bogon ltp]$ git status
    # 位于分支 mybranch
    # 尚未暂存以备提交的变更：
    # （使用 "git add <file>..." 更新要提交的内容）
    # （使用 "git checkout -- <file>..." 丢弃工作区的改动）
    #
    # 修改： testcases/kernel/syscalls/unlink/unlink05.c
    #
    # 未跟踪的文件:
    # （使用 "git add <file>..." 以包含要提交的内容）
    #
    # testcases/kernel/log
    修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）
    [wxs@bogon ltp]$ git add testcases/kernel/syscalls/unlink/unlink05.c
    [wxs@bogon ltp]$ git commit -s -m "syscalls/unlink: Convert to new API for test unlink(1)"
    [mybranch 860a098] syscalls/unlink: Convert to new API for test unlink(1)
     1 file changed, 57 insertions(+), 209 deletions(-)
     rewrite testcases/kernel/syscalls/unlink/unlink05.c (88%)

#### 3.3.3 生成 patch 并校验 ####

[wxs@bogon ltp]$ git format-patch -3
    0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch
    0002-syscalls-getpid-Convert-to-new-API-for-test-getpid-2.patch
    0003-syscalls-unlink-Convert-to-new-API-for-test-unlink-1.patch
    [wxs@bogon ltp]$ ../linux/scripts/checkpatch.pl 0003-syscalls-unlink-Convert-to-new-API-for-test-unlink-1.patch 
    total: 0 errors, 0 warnings, 235 lines checked
    
    0003-syscalls-unlink-Convert-to-new-API-for-test-unlink-1.patch has no obvious style problems and is ready for submission.

### 3.4 Convert getppid02 ###

#### 3.4.1 重写代码 ####

进入 `getppid` 目录，删除原有 getppid02 文件，并重写 `getppid02.c`：

[wxs@bogon ltp]$ cd testcases/kernel/syscalls/getppid/
    [wxs@bogon getppid]$ ls
    getppid01  getppid01.c  getppid02  getppid02.c  Makefile
    [wxs@bogon getppid]$ rm getppid02*
    [wxs@bogon getppid]$ vim getppid02.c

/* * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc. */
    /********************************************************** * * TEST IDENTIFIER : getppid02 * * TEST TITLE : Basic tests for getppid(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Testcase to check the basic functionality of the getppid() syscall. * **********************************************************/
    
    #include <errno.h>
    #include <sys/wait.h>
    #include "tst_test.h"
    
    static void testGetppid(void)
    { 
        int status;
        pid_t pid, ppid;
    
        ppid = getpid();
        pid = SAFE_FORK();
    
        if (pid == -1)
            tst_res(TFAIL, "fork failed");
        else if (pid == 0) { 
            TEST(getppid());
            if (ppid != TEST_RETURN)
                tst_res(TFAIL | TERRNO,
                        "getppid Failed (%ld != %d)",
                        TEST_RETURN, ppid);
            else
                tst_res(TPASS,
                        "getppid Success (%ld == %d)",
                        TEST_RETURN, ppid);
        } else { 
            if (wait(&status) == -1)
                tst_res(TBROK | TERRNO,
                        "wait failed");
            if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
                tst_res(TFAIL,
                        "getppid functionality incorrect");
        }
    }
    
    static struct tst_test test = { 
        .test_all = testGetppid,
        .forks_child = 1
    };

`make` 并测试正确性：

[wxs@bogon getppid]$ make
    make -C "/home/wxs/ltp/lib" -f "/home/wxs/ltp/lib/Makefile" all
    make[1]: 进入目录“/home/wxs/ltp/lib”
    make[2]: 进入目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/newlib_tests”
    make[2]: 进入目录“/home/wxs/ltp/lib/tests”
    make[2]: 对“all”无需做任何事。
    make[2]: 离开目录“/home/wxs/ltp/lib/tests”
    make[1]: 离开目录“/home/wxs/ltp/lib”
    gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -Wold-style-definition -D_FORTIFY_SOURCE=2 -I../../../../include -I../../../../include -I../../../../include/old/   -L../../../../lib  getppid02.c   -lltp -o getppid02
    [wxs@bogon getppid]$ ./getppid02 
    tst_test.c:934: INFO: Timeout per run is 0h 05m 00s
    getppid02.c:54: PASS: getppid Success (18017 == 18017)
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 3.4.2 提交 git ####

[wxs@bogon getppid]$ cd ~/ltp
    [wxs@bogon ltp]$ git status
    # 位于分支 mybranch
    # 尚未暂存以备提交的变更：
    # （使用 "git add <file>..." 更新要提交的内容）
    # （使用 "git checkout -- <file>..." 丢弃工作区的改动）
    #
    # 修改： testcases/kernel/syscalls/getppid/getppid02.c
    #
    # 未跟踪的文件:
    # （使用 "git add <file>..." 以包含要提交的内容）
    #
    # testcases/kernel/log
    修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）
    [wxs@bogon ltp]$ git add testcases/kernel/syscalls/getppid/getppid02.c
    [wxs@bogon ltp]$ git commit -s -m "syscalls/getppid: Convert to new API for test getppid(2)"
    [mybranch 80d5955] syscalls/getppid: Convert to new API for test getppid(2)
     1 file changed, 69 insertions(+), 107 deletions(-)
     rewrite testcases/kernel/syscalls/getppid/getppid02.c (95%)

#### 3.4.3 生成 patch 并校验 ####

[wxs@bogon ltp]$ git format-patch -4
    0001-syscalls-getpagesize-Convert-to-new-API-for-test-get.patch
    0002-syscalls-getpid-Convert-to-new-API-for-test-getpid-2.patch
    0003-syscalls-unlink-Convert-to-new-API-for-test-unlink-1.patch
    0004-syscalls-getppid-Convert-to-new-API-for-test-getppid.patch
    [wxs@bogon ltp]$ ../linux/scripts/checkpatch.pl 0004-syscalls-getppid-Convert-to-new-API-for-test-getppid.patch 
    total: 0 errors, 0 warnings, 151 lines checked
    
    0004-syscalls-getppid-Convert-to-new-API-for-test-getppid.patch has no obvious style problems and is ready for submission.

[LTP]: http://blog.csdn.net/yuanlaijike/article/details/78068331
[_Shell]: http://blog.csdn.net/yuanlaijike/article/details/78138487
[Link 1]: http://blog.csdn.net/yuanlaijike/article/details/78188206
[_exit]: http://blog.csdn.net/yuanlaijike/article/details/78368043
[_IO]: http://blog.csdn.net/yuanlaijike/article/details/78505940
[_IO 1]: http://blog.csdn.net/yuanlaijike/article/details/78639068
[https_github.com_jitwxs_blog_sample]: https://github.com/jitwxs/blog_sample