LTP 第六章开发IO阻塞测试集

小咪咪 2022-06-05 11:37 317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 ###

*   *   *  6.1 Convert pselect02
         *   *  6.1.1 重写代码
             *  6.1.2 提交并校验
         *  6.2 Convert epoll\_wait03
         *   *  6.2.1 重写代码
             *  6.2.2 提交并校验
         *  6.3 Convert epoll\_pwait01
         *   *  6.3.1 重写代码
             *  6.3.2 提交并校验
         *  6.4 Convert mmap04
         *   *  6.4.1 重写代码
             *  6.4.2 提交并校验
         *  6.5 Convert mmap05
         *   *  6.5.1 重写代码
             *  6.5.2 提交并校验
         *  6.6 Convert mmap06
         *   *  6.6.1 重写代码
             *  6.6.2 提交并校验
         *  6.7 Add selelct05
         *   *  6.7.1 编写代码
             *  6.7.2 提交并校验

在本章中，我们将编写以下几个测试：

*  Convert pselect02
 *  Convert epoll\_wait03
 *  Convert epoll\_pwait01
 *  Convert mmap04
 *  Convert mmap05
 *  Convert mmap06
 *  Add select05

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

### 6.1 Convert pselect02 ###

#### 6.1.1 重写代码 ####

ltp/testcases/kernel/syscalls/pselect/
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/pselect$ rm pselect02.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/pselect$ vim pselect02.c

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/pselect$ ./pselect02
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    pselect02.c:65: PASS: pselect() failed as expected: EBADF
    pselect02.c:65: PASS: pselect() failed as expected: EINVAL
    pselect02.c:65: PASS: pselect() failed as expected: EINVAL
    
    Summary:
    passed   3
    failed   0
    skipped  0
    warnings 0

#### 6.1.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/pselect/pselect02.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert pselect02 to new API"
    [master e9f68a5] Convert pselect02 to new API
     1 file changed, 93 insertions(+), 118 deletions(-)
     rewrite testcases/kernel/syscalls/pselect/pselect02.c (83%)

wxs@ubuntu:~/ltp$ git format-patch -1
    0001-Convert-pselect02-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0001-Convert-pselect02-to-new-API.patch 
    total: 0 errors, 0 warnings, 172 lines checked
    
    0001-Convert-pselect02-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.2 Convert epoll\_wait03 ###

#### 6.2.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_wait$ rm epoll_wait03.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_wait$ vim epoll_wait03.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 : epoll_wait03 * * TEST TITLE : Basic tests for epoll_wait(2) * * TEST CASE TOTAL : 5 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * Description: * 1) epoll_wait(2) fails if epfd is not a valid file descriptor * 2) epoll_wait(2) fails if epfd is not an epoll file descriptor * 3) epoll_wait(2) fails if maxevents is less than zero * 4) epoll_wait(2) fails if maxevents is equal to zero * 5) epoll_wait(2) fails if the memory area pointed to by events * is not accessible with write permissions. * * Expected Result: * 1) epoll_wait(2) should return -1 and set errno to EBADF * 2) epoll_wait(2) should return -1 and set errno to EINVAL * 3) epoll_wait(2) should return -1 and set errno to EINVAL * 4) epoll_wait(2) should return -1 and set errno to EINVAL * 5) epoll_wait(2) should return -1 and set errno to EFAULT * **********************************************************/
    
    #include <sys/epoll.h>
    #include <sys/mman.h>
    #include <unistd.h>
    #include <string.h>
    #include <errno.h>
    
    #include "tst_test.h"
    
    static int page_size, fds[2], epfd, inv_epfd, bad_epfd = -1;
    
    static struct epoll_event epevs[1] = { 
        { .events = EPOLLOUT}
    };
    
    static struct epoll_event *ev_rdwr = epevs;
    static struct epoll_event *ev_rdonly;
    
    static struct tcase { 
        int *epfd;
        struct epoll_event **ev;
        int maxevents;
        int exp_errno;
    } tcases[] = { 
        { &bad_epfd, &ev_rdwr, 1, EBADF},
        { &inv_epfd, &ev_rdwr, 1,  EINVAL},
        { &epfd, &ev_rdwr, -1,  EINVAL},
        { &epfd, &ev_rdwr, 0,  EINVAL},
        { &epfd, &ev_rdonly, 1,  EFAULT}
    };
    
    static void my_test(unsigned int n)
    { 
        struct tcase *tc = &tcases[n];
    
        TEST(epoll_wait(*(tc->epfd), *(tc->ev), tc->maxevents, -1));
    
        if (TEST_RETURN != -1)
            tst_res(TFAIL, "epoll_wait() succeed unexpectedly");
        else
            if (tc->exp_errno == TEST_ERRNO)
                tst_res(TPASS | TTERRNO,
                        "epoll_wait() fails as expected");
            else
                tst_res(TFAIL | TTERRNO,
                        "epoll_wait() fails unexpectedly, expected %d: %s",
                        tc->exp_errno,
                        strerror(tc->exp_errno));
    }
    
    static void setup(void)
    { 
        page_size = getpagesize();
    
        ev_rdonly = SAFE_MMAP(NULL, page_size, PROT_READ,
                MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
    
        SAFE_PIPE(fds);
    
        epfd = epoll_create(1);
        if (epfd == -1)
            tst_brk(TBROK | TERRNO, "failed to create epoll instance");
    
        epevs[0].data.fd = fds[1];
    
        if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[1], &epevs[0]))
            tst_brk(TBROK | TERRNO, "failed to register epoll target");
    }
    
    static void cleanup(void)
    { 
        if (epfd > 0 && close(epfd))
            tst_res(TWARN | TERRNO, "failed to close epfd");
    
        if (close(fds[0]))
            tst_res(TWARN | TERRNO, "close(fds[0]) failed");
    
        if (close(fds[1]))
            tst_res(TWARN | TERRNO, "close(fds[1]) failed");
    }
    
    static struct tst_test test = { 
        .tcnt = ARRAY_SIZE(tcases),
        .test = my_test,
        .needs_checkpoints = 1,
        .setup = setup,
        .cleanup = cleanup
    };

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_wait$ ./epoll_wait03
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    epoll_wait03.c:82: PASS: epoll_wait() fails as expected: EBADF
    epoll_wait03.c:82: PASS: epoll_wait() fails as expected: EINVAL
    epoll_wait03.c:82: PASS: epoll_wait() fails as expected: EINVAL
    epoll_wait03.c:82: PASS: epoll_wait() fails as expected: EINVAL
    epoll_wait03.c:82: PASS: epoll_wait() fails as expected: EFAULT
    
    Summary:
    passed   5
    failed   0
    skipped  0
    warnings 0

#### 6.2.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/epoll_wait/epoll_wait03.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert epoll_wait03 to new API"
    [master 9f73675] Convert epoll_wait03 to new API
     1 file changed, 127 insertions(+), 153 deletions(-)
     rewrite testcases/kernel/syscalls/epoll_wait/epoll_wait03.c (77%)

wxs@ubuntu:~/ltp$ git format-patch -2
    0001-Convert-pselect02-to-new-API.patch
    0002-Convert-epoll_wait03-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0002-Convert-epoll_wait03-to-new-API.patch 
    total: 0 errors, 0 warnings, 221 lines checked
    
    0002-Convert-epoll_wait03-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.3 Convert epoll\_pwait01 ###

#### 6.3.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_pwait$ rm epoll_pwait01.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_pwait$ vim epoll_pwait01.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 : epoll_pwait01 * * TEST TITLE : Basic tests for epoll_wait(2) * * TEST CASE TOTAL : 2 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Basic test for epoll_pwait(2). * 1) epoll_pwait(2) with sigmask argument allows the caller to * safely wait until either a file descriptor becomes ready * or the timeout expires. * 2) epoll_pwait(2) with NULL sigmask argument fails if * interrupted by a signal handler, epoll_pwait(2) should * return -1 and set errno to EINTR.include <sys/epoll.h> **********************************************************/
    
    #include <sys/epoll.h>
    #include <sys/types.h>
    #include <unistd.h>
    #include <stdlib.h>
    #include <string.h>
    #include <errno.h>
    
    #include "tst_test.h"
    
    static int epfd, fds[2];
    static struct sigaction sa;
    static struct epoll_event epevs;
    static sigset_t signalset;
    
    static struct tcase { 
        sigset_t *sig;
        int ret_val;
        int exp_errno;
    } tcases[] = { 
        { &signalset, 0, 0},
        { NULL, -1, EINTR}
    };
    
    static void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
    { 
    }
    
    static void setup(void)
    { 
        if (sigemptyset(&signalset) == -1)
            tst_brk(TFAIL | TERRNO, "sigemptyset() failed");
    
        if (sigaddset(&signalset, SIGUSR1) == -1)
            tst_brk(TFAIL | TERRNO, "sigaddset() failed");
    
        sa.sa_flags = 0;
        sa.sa_handler = sighandler;
        if (sigemptyset(&sa.sa_mask) == -1)
            tst_brk(TFAIL | TERRNO, "sigemptyset() failed");
    
        if (sigaction(SIGUSR1, &sa, NULL) == -1)
            tst_brk(TFAIL | TERRNO, "sigaction() failed");
    
        SAFE_PIPE(fds);
    
        epfd = epoll_create(1);
        if (epfd == -1)
            tst_brk(TBROK | TERRNO, "failed to create epoll instance");
    
        epevs.events = EPOLLIN;
        epevs.data.fd = fds[0];
    
        if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[0], &epevs) == -1)
            tst_brk(TBROK | TERRNO, "failed to register epoll target");
    }
    
    static void cleanup(void)
    { 
        if (epfd > 0 && close(epfd))
            tst_res(TWARN | TERRNO, "failed to close epfd");
    
        if (close(fds[0]))
            tst_res(TWARN | TERRNO, "close(fds[0]) failed");
    
        if (close(fds[1]))
            tst_res(TWARN | TERRNO, "close(fds[1]) failed");
    }
    
    static void my_test(unsigned int n)
    { 
        struct tcase *tc = &tcases[n];
    
        if (SAFE_FORK() == 0) { 
            TST_PROCESS_STATE_WAIT(getppid(), 'S');
            SAFE_KILL(getppid(), SIGUSR1);
    
            cleanup();
            exit(EXIT_SUCCESS);
        }
    
        TEST(epoll_pwait(epfd, &epevs, 1, 100, tc->sig));
    
        if (tc->ret_val == TEST_RETURN)
            if (TEST_RETURN == 0 || tc->exp_errno == TEST_ERRNO) { 
                tst_res(TPASS, "epoll_pwait() pass");
                return;
            }
    
        tst_res(TFAIL | TTERRNO, "epoll_pwait() failed");
    }
    
    static struct tst_test test = { 
        .tcnt = ARRAY_SIZE(tcases),
        .test = my_test,
        .needs_checkpoints = 1,
        .forks_child = 1,
        .setup = setup,
        .cleanup = cleanup,
        .min_kver = "2.6.19"
    };

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/epoll_pwait$ ./epoll_pwait01 
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    epoll_pwait01.c:118: PASS: epoll_pwait() pass
    epoll_pwait01.c:118: PASS: epoll_pwait() pass
    
    Summary:
    passed   2
    failed   0
    skipped  0
    warnings 0

#### 6.3.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert epoll_pwait01 to new API"
    [master 5cc7e9a] Convert epoll_pwait01 to new API
     1 file changed, 133 insertions(+), 197 deletions(-)
     rewrite testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c (80%)

wxs@ubuntu:~/ltp$ git format-patch -3
    0001-Convert-pselect02-to-new-API.patch
    0002-Convert-epoll_wait03-to-new-API.patch
    0003-Convert-epoll_pwait01-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0003-Convert-epoll_pwait01-to-new-API.patch 
    total: 0 errors, 0 warnings, 278 lines checked
    
    0003-Convert-epoll_pwait01-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.4 Convert mmap04 ###

#### 6.4.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ rm mmap04.c 
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ vim mmap04.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 : mmap04 * * TEST TITLE : Basic tests for mmap(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Call mmap() to map a file creating a mapped region with read/exec access * under the following conditions - * - The prot parameter is set to PROT_READ|PROT_EXEC * - The file descriptor is open for read * - The file being mapped has read and execute permission bit set. * - The minimum file permissions should be 0555. * * The call should succeed to map the file creating mapped memory with the * required attributes. * * EXPECTED RESULT * mmap() should succeed returning the address of the mapped region,and the * mapped region should contain the contents of the mapped file. * ********************************************************/
    
    #include <stdlib.h>
    #include <errno.h>
    #include "tst_test.h"
    
    #define TEMPFILE "tempFile"
    
    static size_t page_sz;
    static char *addr;
    static char *dummy;
    static int fd;
    
    static void setup(void)
    { 
        char *buf;
    
        page_sz = getpagesize();
    
        buf = calloc(page_sz, sizeof(char));
        if (buf == NULL)
            tst_brk(TFAIL, "calloc() failed (tst_buff)");
    
        memset(buf, 'A', page_sz);
    
        fd = open(TEMPFILE, O_WRONLY | O_CREAT, 0666);
        if (fd < 0) { 
            free(buf);
            tst_brk(TFAIL, "opening %s failed", TEMPFILE);
        }
    
        if ((size_t)write(fd, buf, page_sz) < page_sz) { 
            free(buf);
            tst_brk(TFAIL, "writing to %s failed", TEMPFILE);
        }
        free(buf);
    
        if (fchmod(fd, 0555) < 0)
            tst_brk(TFAIL, "fchmod of %s failed", TEMPFILE);
    
        if (close(fd) < 0)
            tst_brk(TFAIL, "closing %s failed", TEMPFILE);
    
        dummy = calloc(page_sz, sizeof(char));
        if (dummy == NULL)
            tst_brk(TFAIL, "calloc failed (dummy)");
    
        fd = open(TEMPFILE, O_RDONLY);
        if (fd < 0)
            tst_brk(TFAIL, "opening %s read-only failed", TEMPFILE);
    }
    
    static void cleanup(void)
    { 
        close(fd);
        free(dummy);
    }
    
    static void do_test(void)
    { 
        addr = mmap(0, page_sz, PROT_READ | PROT_EXEC,
                    MAP_FILE | MAP_SHARED, fd, 0);
        TEST_ERRNO = errno;
    
        if (addr == MAP_FAILED)
            tst_res(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE);
    
        if ((read(fd, dummy, page_sz)) < 0)
            tst_brk(TFAIL, "reading %s failed", TEMPFILE);
    
        if ((memcmp(dummy, addr, page_sz)))
            tst_res(TFAIL,
                    "mapped memory region contains invalid data");
        else
            tst_res(TPASS,
                    "Functionality of mmap() successful");
    
        if ((munmap(addr, page_sz)) != 0)
            tst_brk(TFAIL, "munmapping failed");
    
        cleanup();
        exit(EXIT_SUCCESS);
    }
    
    static struct tst_test test = { 
        .test_all = do_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ ./mmap04
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    mmap04.c:114: PASS: Functionality of mmap() successful
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 6.4.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/mmap/mmap04.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert mmap04 to new API"
    [master 0988ebb] Convert mmap04 to new API
     1 file changed, 9 insertions(+), 5 deletions(-)

wxs@ubuntu:~/ltp$ git format-patch -4
    0001-Convert-epoll_wait03-to-new-API.patch
    0002-Convert-epoll_pwait01-to-new-API.patch
    0003-Convert-mmap04-to-new-API.patch
    0004-Convert-mmap04-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0004-Convert-mmap04-to-new-API.patch 
    total: 0 errors, 0 warnings, 32 lines checked
    
    0004-Convert-mmap04-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.5 Convert mmap05 ###

#### 6.5.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ rm mmap05.c 
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ vim mmap05.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 : mmap05 * * TEST TITLE : Basic tests for mmap(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Call mmap() to map a file creating mapped memory with no access * under the following conditions - * - The prot parameter is set to PROT_NONE * - The file descriptor is open for read(any mode other than write) * - The minimum file permissions should be 0444. * * The call should succeed to map the file creating mapped memory * with the required attributes. * * EXPECTED RESULT * mmap() should succeed returning the address of the mapped region, * and an attempt to access the contents of the mapped region * should give rise to the signal SIGSEGV. * ********************************************************/
    
    #include <stdlib.h>
    #include <errno.h>
    #include <setjmp.h>
    #include "tst_test.h"
    #include <signal.h>
    
    #define TEMPFILE "tempFile"
    
    static size_t page_sz;
    static volatile char *addr;
    static volatile int pass = 0;
    static int fd;
    static sigjmp_buf env;
    
    static void sig_handler(int sig)
    { 
        if (sig == SIGSEGV) { 
            pass = 1;
            siglongjmp(env, 1);
        } else
            tst_brk(TBROK, "received an unexpected signal: %d", sig);
    }
    
    static void setup(void)
    { 
        char *buf;
    
        signal(SIGSEGV, sig_handler);
    
        page_sz = getpagesize();
    
        buf = calloc(page_sz, sizeof(char));
        if (buf == NULL)
            tst_brk(TFAIL, "calloc() failed (tst_buff)");
    
        memset(buf, 'A', page_sz);
    
        fd = open(TEMPFILE, O_WRONLY | O_CREAT, 0666);
        if (fd < 0) { 
            free(buf);
            tst_brk(TFAIL, "opening %s failed", TEMPFILE);
        }
    
        if ((size_t)write(fd, buf, page_sz) != page_sz) { 
            free(buf);
            tst_brk(TFAIL, "writing to %s failed", TEMPFILE);
        }
        free(buf);
    
        if (fchmod(fd, 0444) < 0)
            tst_brk(TFAIL | TERRNO, "fchmod of %s failed", TEMPFILE);
    
        if (close(fd) < 0)
            tst_brk(TFAIL | TERRNO, "closing %s failed", TEMPFILE);
    
        fd = open(TEMPFILE, O_RDONLY);
        if (fd < 0)
            tst_brk(TFAIL | TERRNO,
                    "opening %s read-only failed", TEMPFILE);
    }
    
    static void cleanup(void)
    { 
        close(fd);
    }
    
    static void do_test(void)
    { 
        char file_content;
    
        addr = mmap(0, page_sz, PROT_NONE,
                MAP_FILE | MAP_SHARED, fd, 0);
        TEST_ERRNO = errno;
    
        if (addr == MAP_FAILED)
            tst_res(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE);
    
        if (sigsetjmp(env, 1) == 0)
            file_content = addr[0];
    
        if (pass)
            tst_res(TPASS, "Got SIGSEGV as expected");
        else
            tst_res(TFAIL,
                    "Mapped memory region with NO access is accessible");
    
        if (munmap((void *)addr, page_sz) != 0)
            tst_brk(TFAIL, "munmapping failed");
    
        pass = 0;
        exit(EXIT_SUCCESS);
    }
    
    static struct tst_test test = { 
        .test_all = do_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ ./mmap05 
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    mmap05.c:122: PASS: Got SIGSEGV as expected
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 6.5.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/mmap/mmap05.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert mmap05 to new API"
    [master 4d1ba1a] Convert mmap05 to new API
     1 file changed, 8 insertions(+), 7 deletions(-)

wxs@ubuntu:~/ltp$ git format-patch -5
    0001-Convert-epoll_pwait01-to-new-API.patch
    0002-Convert-mmap04-to-new-API.patch
    0003-Convert-mmap04-to-new-API.patch
    0004-Convert-mmap05-to-new-API.patch
    0005-Convert-mmap05-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0005-Convert-mmap05-to-new-API.patch 
    total: 0 errors, 0 warnings, 34 lines checked
    
    0005-Convert-mmap05-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.6 Convert mmap06 ###

#### 6.6.1 重写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ rm mmap06.c
    wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ vim mmap06.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 : mmap06 * * TEST TITLE : Basic tests for mmap(2) * * TEST CASE TOTAL : 1 * * AUTHOR : jitwxs * <jitwxs@foxmail.com> * * DESCRIPTION * Call mmap() to map a file creating a mapped region with read * access under the following conditions - * - The prot parameter is set to PROT_READ * - The file descriptor is open for writing. * * The call should fail to map the file. * * EXPECTED RESULT * mmap() should fail returning -1 and errno should get set to * EACCES. * **********************************************************/
    
    #include <stdlib.h>
    #include <errno.h>
    #include "tst_test.h"
    
    #define TEMPFILE "tempFile"
    
    static size_t page_sz;
    static char *addr;
    static int fd;
    
    static void setup(void)
    { 
        char *buf;
    
        page_sz = getpagesize();
    
        buf = calloc(page_sz, sizeof(char));
        if (buf == NULL)
            tst_brk(TFAIL, "calloc() failed (tst_buff)");
    
        memset(buf, 'A', page_sz);
    
        fd = open(TEMPFILE, O_WRONLY | O_CREAT, 0666);
        if (fd < 0) { 
            free(buf);
            tst_brk(TFAIL, "opening %s failed", TEMPFILE);
        }
    
        if ((size_t)write(fd, buf, page_sz) < page_sz) { 
            free(buf);
            tst_brk(TFAIL, "writing to %s failed", TEMPFILE);
        }
        free(buf);
    }
    
    static void cleanup(void)
    { 
        close(fd);
    }
    
    static void do_test(void)
    { 
        addr = mmap(0, page_sz, PROT_READ,
                    MAP_FILE | MAP_SHARED, fd, 0);
        TEST_ERRNO = errno;
    
        if (addr != MAP_FAILED) { 
            tst_res(TFAIL | TERRNO,
                    "mmap() returned invalid value, expected: %p",
                    MAP_FAILED);
            if (munmap(addr, page_sz) != 0) { 
                tst_res(TBROK, "munmap() failed");
                cleanup();
            }
            exit(EXIT_FAILURE);
        }
    
        if (TEST_ERRNO == EACCES)
            tst_res(TPASS, "mmap failed with EACCES");
        else
            tst_res(TFAIL | TERRNO,
                    "mmap failed with unexpected errno");
    
        cleanup();
        exit(EXIT_SUCCESS);
    }
    
    static struct tst_test test = { 
        .test_all = do_test,
        .setup = setup,
        .cleanup = cleanup,
        .needs_tmpdir = 1
    };

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/mmap$ ./mmap06
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    mmap06.c:97: PASS: mmap failed with EACCES
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 6.6.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/mmap/mmap06.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Convert mmap06 to new API"
    [master ade348a] Convert mmap06 to new API
     1 file changed, 2 insertions(+), 2 deletions(-)

wxs@ubuntu:~/ltp$ git format-patch -6
    0001-Convert-mmap04-to-new-API.patch
    0002-Convert-mmap04-to-new-API.patch
    0003-Convert-mmap05-to-new-API.patch
    0004-Convert-mmap05-to-new-API.patch
    0005-Convert-mmap06-to-new-API.patch
    0006-Convert-mmap06-to-new-API.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0006-Convert-mmap06-to-new-API.patch 
    total: 0 errors, 0 warnings, 16 lines checked
    
    0006-Convert-mmap06-to-new-API.patch has no obvious style problems and is ready for submission.

### 6.7 Add selelct05 ###

#### 6.7.1 编写代码 ####

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/select$ vim select05.c

wxs@ubuntu:~/ltp/testcases/kernel/syscalls/select$ ./select05
    tst_test.c:977: INFO: Timeout per run is 0h 05m 00s
    select05.c:64: PASS: select() pass
    
    Summary:
    passed   1
    failed   0
    skipped  0
    warnings 0

#### 6.7.2 提交并校验 ####

wxs@ubuntu:~/ltp$ git add testcases/kernel/syscalls/select/select05.c
    wxs@ubuntu:~/ltp$ git commit -s -m "Add select05 to test selelct(2)"
    [master 6d9bd93] Add select05 to test selelct(2)
     1 file changed, 3 insertions(+), 2 deletions(-)

wxs@ubuntu:~/ltp$ git format-patch -7
    0001-Convert-mmap04-to-new-API.patch
    0002-Convert-mmap05-to-new-API.patch
    0003-Convert-mmap05-to-new-API.patch
    0004-Convert-mmap06-to-new-API.patch
    0005-Convert-mmap06-to-new-API.patch
    0006-Add-select05-to-test-selelct-2.patch
    0007-Add-select05-to-test-selelct-2.patch
    wxs@ubuntu:~/ltp$ ../linux/scripts/checkpatch.pl 0007-Add-select05-to-test-selelct-2.patch 
    total: 0 errors, 0 warnings, 17 lines checked
    
    0007-Add-select05-to-test-selelct-2.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