LTP 第五章开发IO操作测试集

分手后的思念是犯贱 2022-06-06 14:26 490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 ###

*   *   *  5.1 Convert read03
         *   *  5.1.1 重写代码
             *  5.1.2 git 提交
             *  5.1.3 patch 校验
         *  5.2 Convert read04
         *   *  5.2.1 重写代码
             *  5.2.2 git 提交
             *  5.2.3 patch 校验
         *  5.3 Convert close02
         *   *  5.3.1 重写代码
             *  5.3.2 git 提交
             *  5.3.3 patch 校验
         *  5.4 Convert close08
         *   *  5.4.1 重写代码
             *  5.4.2 git 提交
             *  5.4.3 patch 校验
         *  5.5 Convert open04
         *   *  5.5.1 重写代码
             *  5.5.2 git 提交
             *  5.5.3 patch 校验

在本章中，我们将编写以下几个测试：

*  Convert read03
 *  Convert read04
 *  Convert close02
 *  Convert close08
 *  Convert open04

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

### 5.1 Convert read03 ###

#### 5.1.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/read$ rm read03.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/read$ vim read03.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 : read03 * * TEST TITLE : Basic tests for read(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Testcase to check that read() sets errno to EAGAIN. * * ALGORITHM * Create a named pipe (fifo), open it in O_NONBLOCK mode, and * attempt to read from it, without writing to it. read() should fail * with EAGAIN. * **********************************************************/
    
    #include <errno.h>
    #include "tst_test.h"
    
    #define FIFONAME "tmpFIFO"
    
    int rfd, wfd;
    
    static void my_test(void)
    { 
        int c;
    
        TEST(read(rfd, &c, 1));
    
        if (TEST_RETURN != -1)
            tst_res(TFAIL, "read() failed");
    
        if (TEST_ERRNO != EAGAIN)
            tst_res(TFAIL, "read set bad errno, expected EAGAIN, got %d",
                    TEST_ERRNO);
        else
            tst_res(TPASS, "read() succeded in setting errno to EAGAIN");
    }
    
    static void setup(void)
    { 
        SAFE_MKFIFO(FIFONAME, 0777);
        rfd = SAFE_OPEN(FIFONAME, O_RDONLY | O_NONBLOCK);
        wfd = SAFE_OPEN(FIFONAME, O_WRONLY | O_NONBLOCK);
    }
    
    static void cleanup(void)
    { 
        if (rfd > 0)
            SAFE_CLOSE(rfd);
        if (wfd > 0)
            SAFE_CLOSE(wfd);
    }
    
    static struct tst_test test = { 
        .test_all = my_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

#### 5.1.2 git 提交 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/read/read03_new.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert read03 to new API"
    [master 2f7fb39] Convert read03 to new API
     1 file changed, 75 insertions(+)
     create mode 100644 testcases/kernel/syscalls/read/read03_new.c

#### 5.1.3 patch 校验 ####

wxs@ubuntu:~/ltp$ git format-patch -1
    0001-Convert-read03-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0001-Convert-read03-to-new-API.patch 
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
    #13: 
    new file mode 100644
    
    total: 0 errors, 1 warnings, 75 lines checked
    
    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.
    
    0001-Convert-read03-to-new-API.patch has style problems, please review.
    
    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

### 5.2 Convert read04 ###

#### 5.2.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/read$ rm read04.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/read$ vim read04.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 : read04 * * TEST TITLE : Basic tests for read(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Testcase to check if read returns the number of bytes read correctly. * * ALGORITHM * Create a file and write some bytes out to it. * Attempt to read more than written. * Check the return count, and the read buffer. The read buffer should be * same as the write buffer. * **********************************************************/
    
    #include <stdio.h>
    #include <errno.h>
    #include "tst_test.h"
    #include "tst_safe_macros.h"
    
    #define TST_SIZE 27
    #define TST_DATA "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    #define FILENAME "tmpfile"
    
    int rfd, wfd;
    
    static void my_test(void)
    { 
        char prbuf[BUFSIZ];
    
        SAFE_WRITE(0, wfd, TST_DATA, TST_SIZE);
    
        rfd = SAFE_OPEN(FILENAME, O_RDONLY, 0700);
        if (rfd == -1)
            tst_res(TBROK | TTERRNO, "can't open for reading");
    
        TEST(read(rfd, prbuf, BUFSIZ));
    
        if (TEST_RETURN == -1)
            tst_res(TFAIL, "call failed unexpectedly");
    
        if (TEST_RETURN != TST_SIZE)
            tst_res(TFAIL, "Bad read count - got %ld - expected %d",
                    TEST_RETURN, TST_SIZE);
    
        if (memcmp(TST_DATA, prbuf, TST_SIZE) != 0)
            tst_res(TFAIL, "read buffer not equal to write buffer");
    
        tst_res(TPASS, "functionality of read() is correct");
    }
    
    static void setup(void)
    { 
        wfd = SAFE_OPEN(FILENAME, O_WRONLY | O_CREAT, 0700);
        if (wfd == -1)
            tst_res(TBROK | TTERRNO,
                    "open %s failed", FILENAME);
    }
    
    static void cleanup(void)
    { 
        if (rfd > 0)
            SAFE_CLOSE(rfd);
        if (wfd > 0)
            SAFE_CLOSE(wfd);
    }
    
    static struct tst_test test = { 
        .test_all = my_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

#### 5.2.2 git 提交 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/read/read04_new.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert read04 to new API"
    [master b5ef790] Convert read04 to new API
     1 file changed, 88 insertions(+)
     create mode 100644 testcases/kernel/syscalls/read/read04_new.c

#### 5.2.3 patch 校验 ####

wxs@ubuntu:~/ltp$ git format-patch -2
    0001-Convert-read03-to-new-API.patch
    0002-Convert-read04-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0002-Convert-read04-to-new-API.patch 
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
    #13: 
    new file mode 100644
    
    total: 0 errors, 1 warnings, 88 lines checked
    
    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.
    
    0002-Convert-read04-to-new-API.patch has style problems, please review.
    
    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

### 5.3 Convert close02 ###

#### 5.3.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/close$ vim close02_new.c

#### 5.3.2 git 提交 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/close/close02_new.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert close02 to new API"
    [master 68c6b1f] Convert close02 to new API
     1 file changed, 51 insertions(+)
     create mode 100644 testcases/kernel/syscalls/close/close02_new.c

#### 5.3.3 patch 校验 ####

wxs@ubuntu:~/ltp$ git format-patch -3
    0001-Convert-read03-to-new-API.patch
    0002-Convert-read04-to-new-API.patch
    0003-Convert-close02-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0003-Convert-close02-to-new-API.patch 
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
    #13: 
    new file mode 100644
    
    total: 0 errors, 1 warnings, 51 lines checked
    
    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.
    
    0003-Convert-close02-to-new-API.patch has style problems, please review.
    
    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

### 5.4 Convert close08 ###

#### 5.4.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/close$ vim close08.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/close$ rm close08.c

#### 5.4.2 git 提交 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/close/close08_new.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert close08 to new API"
    [master 3e05d89] Convert close08 to new API
     1 file changed, 63 insertions(+)
     create mode 100644 testcases/kernel/syscalls/close/close08_new.c

#### 5.4.3 patch 校验 ####

wxs@ubuntu:~/ltp$ git format-patch -4
    0001-Convert-read03-to-new-API.patch
    0002-Convert-read04-to-new-API.patch
    0003-Convert-close02-to-new-API.patch
    0004-Convert-close08-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0004-Convert-close08-to-new-API.patch 
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
    #13: 
    new file mode 100644
    
    total: 0 errors, 1 warnings, 63 lines checked
    
    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.
    
    0004-Convert-close08-to-new-API.patch has style problems, please review.
    
    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

### 5.5 Convert open04 ###

#### 5.5.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/open$ vim open04_new.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 : open04 * * TEST TITLE : Basic tests for open(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Testcase to check that open(2) sets EMFILE if a process opens files * more than its descriptor size * * ALGORITHM * First get the file descriptor table size which is set for a process. * Use open(2) for creating files till the descriptor table becomes full. * These open(2)s should succeed. Finally use open(2) to open another * file. This attempt should fail with EMFILE. * **********************************************************/
    
    #include <stdio.h>
    #include <stdlib.h>
    #include <errno.h>
    #include <sys/resource.h>
    #include <fcntl.h>
    #include <unistd.h>
    #include "tst_test.h"
    
    #define FILE_A "tmpfileA"
    #define FILE_B "tmpfileB"
    
    static int fd1, fd2;
    
    static void my_test(void)
    { 
        TEST((fd2 = open(FILE_B, O_RDWR | O_CREAT, 0777)));
    
        if (TEST_RETURN != -1)
            tst_res(TFAIL, "call succeeded unexpectedly");
    
        if (TEST_ERRNO != EMFILE)
            tst_res(TFAIL, "Expected EMFILE, got %d", TEST_ERRNO);
        else
            tst_res(TPASS, "call returned expected EMFILE error");
    }
    
    static void setup(void)
    { 
        struct rlimit rlim, r;
    
        fd1 = SAFE_OPEN(FILE_A, O_RDWR | O_CREAT, 0777);
        SAFE_GETRLIMIT(RLIMIT_NOFILE, &rlim);
        r.rlim_cur = fd1;
        r.rlim_max = rlim.rlim_max;
        SAFE_SETRLIMIT(RLIMIT_NOFILE, &r);
    }
    
    static void cleanup(void)
    { 
        if (fd1 > 0)
            SAFE_CLOSE(fd1);
        if (fd2 > 0)
            SAFE_CLOSE(fd2);
    }
    
    static struct tst_test test = { 
        .test_all = my_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

#### 5.5.2 git 提交 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/open/open04_new.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert open04 to new API"
    [master 3458645] Convert open04 to new API
     1 file changed, 79 insertions(+)
     create mode 100644 testcases/kernel/syscalls/open/open04_new.c

#### 5.5.3 patch 校验 ####

wxs@ubuntu:~/ltp$ git format-patch -5
    0001-Convert-read03-to-new-API.patch
    0002-Convert-read04-to-new-API.patch
    0003-Convert-close02-to-new-API.patch
    0004-Convert-close08-to-new-API.patch
    0005-Convert-open04-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0005-Convert-open04-to-new-API.patch 
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
    #13: 
    new file mode 100644
    
    total: 0 errors, 1 warnings, 79 lines checked
    
    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.
    
    0005-Convert-open04-to-new-API.patch has style problems, please review.
    
    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

[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