Re: [Qemu-devel] [PATCH v3 14/46] tests/tcg/multiarch: enable additional linux-test tests

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

On 04/24/2018 12:23 PM, Alex Bennée wrote:
> Un-comment the remaining tests.
> 
> I removed the itimer value tests because I'm fairly sure a re-arming
> timer will always have a different value in it when you grab it.
> 
> I've also fixed up the clone thread flags as QEMU will only allow a
> clone to use flags which match glibc.
> 
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> 
> ---
> v3
>   - make clone flags match CLONE_THREAD_FLAGS
> ---
>  tests/tcg/multiarch/linux-test.c | 31 +++++++++++++++++--------------
>  1 file changed, 17 insertions(+), 14 deletions(-)
> 
> diff --git a/tests/tcg/multiarch/linux-test.c b/tests/tcg/multiarch/linux-test.c
> index 4457bd04ba..754edf9910 100644
> --- a/tests/tcg/multiarch/linux-test.c
> +++ b/tests/tcg/multiarch/linux-test.c
> @@ -16,6 +16,7 @@
>   *  You should have received a copy of the GNU General Public License
>   *  along with this program; if not, see <http://www.gnu.org/licenses/>.
>   */
> +#define _GNU_SOURCE
>  #include <stdarg.h>
>  #include <stdlib.h>
>  #include <stdio.h>
> @@ -39,6 +40,7 @@
>  #include <dirent.h>
>  #include <setjmp.h>
>  #include <sys/shm.h>
> +#include <sched.h>
>  
>  #define TESTPATH "/tmp/linux-test.tmp"
>  #define TESTPORT 7654
> @@ -58,8 +60,8 @@ static void error1(const char *filename, int line, const char *fmt, ...)
>  static int __chk_error(const char *filename, int line, int ret)
>  {
>      if (ret < 0) {
> -        error1(filename, line, "%m (ret=%d, errno=%d)",
> -               ret, errno);
> +        error1(filename, line, "%m (ret=%d, errno=%d/%s)",
> +               ret, errno, strerror(errno));
>      }
>      return ret;
>  }
> @@ -320,7 +322,6 @@ static void test_socket(void)
>      chk_error(close(server_fd));
>  }
>  
> -#if 0
>  #define WCOUNT_MAX 512
>  
>  static void test_pipe(void)
> @@ -355,7 +356,7 @@ static void test_pipe(void)
>              }
>              if (FD_ISSET(fds[1], &wfds)) {
>                  ch = 'a';
> -                chk_error(write(fds[0], &ch, 1));
> +                chk_error(write(fds[1], &ch, 1));
>                  wcount++;
>              }
>          }
> @@ -387,6 +388,9 @@ static int thread2_func(void *arg)
>      return 0;
>  }
>  
> +/* For test_clone we must match the clone flags used by glibc, see
> + * CLONE_THREAD_FLAGS in the QEMU source code.
> + */
>  void test_clone(void)
>  {
>      uint8_t *stack1, *stack2;
> @@ -394,11 +398,15 @@ void test_clone(void)
>  
>      stack1 = malloc(STACK_SIZE);
>      pid1 = chk_error(clone(thread1_func, stack1 + STACK_SIZE,
> -                           CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello1"));
> +                           CLONE_VM | CLONE_FS | CLONE_FILES |
> +                           CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM,
> +                            "hello1"));
>  
>      stack2 = malloc(STACK_SIZE);
>      pid2 = chk_error(clone(thread2_func, stack2 + STACK_SIZE,
> -                           CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello2"));
> +                           CLONE_VM | CLONE_FS | CLONE_FILES |
> +                           CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM,
> +                           "hello2"));
>  
>      while (waitpid(pid1, &status1, 0) != pid1);
>      free(stack1);
> @@ -408,7 +416,6 @@ void test_clone(void)
>          thread2_res != 6)
>          error("clone");
>  }
> -#endif
>  
>  /***********************************/
>  
> @@ -449,12 +456,10 @@ static void test_signal(void)
>      it.it_value.tv_usec = 10 * 1000;
>      chk_error(setitimer(ITIMER_REAL, &it, NULL));
>      chk_error(getitimer(ITIMER_REAL, &oit));
> -    if (oit.it_value.tv_sec != it.it_value.tv_sec ||
> -        oit.it_value.tv_usec != it.it_value.tv_usec)
> -        error("itimer");
>  
>      while (alarm_count < 5) {
>          usleep(10 * 1000);
> +        getitimer(ITIMER_REAL, &oit);
>      }
>  
>      it.it_interval.tv_sec = 0;
> @@ -463,9 +468,6 @@ static void test_signal(void)
>      it.it_value.tv_usec = 0;
>      memset(&oit, 0xff, sizeof(oit));
>      chk_error(setitimer(ITIMER_REAL, &it, &oit));
> -    if (oit.it_value.tv_sec != 0 ||
> -        oit.it_value.tv_usec != 10 * 1000)
> -        error("setitimer");
>  
>      /* SIGSEGV test */
>      act.sa_sigaction = sig_segv;
> @@ -503,10 +505,11 @@ static void test_shm(void)
>  int main(int argc, char **argv)
>  {
>      test_file();
> +    test_pipe();
>      test_fork();
>      test_time();
>      test_socket();
> -    //    test_clone();
> +    test_clone();
>      test_signal();
>      test_shm();
>      return 0;
>