[1/3] posix: Adapt tst-spawn{2,3} to use libsupport.

  Checked on x86_64-linux-gnu.

	* posix/tst-spawn2.c (do_test): Use libsupport.
	* posix/tst-spawn3.c (do_test): Likewise.
---
 ChangeLog          |  5 ++++
 posix/tst-spawn2.c | 26 +++++++++-------
 posix/tst-spawn3.c | 88 ++++++++++++++++--------------------------------------
 3 files changed, 46 insertions(+), 73 deletions(-)
  

Any objections about this patch? Otherwise I will push it in following hours.

On 15/05/2017 16:36, Adhemerval Zanella wrote:
> Checked on x86_64-linux-gnu.
> 
> 	* posix/tst-spawn2.c (do_test): Use libsupport.
> 	* posix/tst-spawn3.c (do_test): Likewise.
> ---
>  ChangeLog          |  5 ++++
>  posix/tst-spawn2.c | 26 +++++++++-------
>  posix/tst-spawn3.c | 88 ++++++++++++++++--------------------------------------
>  3 files changed, 46 insertions(+), 73 deletions(-)
> 
> diff --git a/posix/tst-spawn2.c b/posix/tst-spawn2.c
> index 73a37b6..3a2e041 100644
> --- a/posix/tst-spawn2.c
> +++ b/posix/tst-spawn2.c
> @@ -23,11 +23,12 @@
>  #include <string.h>
>  #include <unistd.h>
>  #include <sys/wait.h>
> -
>  #include <stdio.h>
>  
> +#include <support/check.h>
> +
>  int
> -posix_spawn_test (void)
> +do_test (void)
>  {
>    /* Check if posix_spawn correctly returns an error and an invalid pid
>       by trying to spawn an invalid binary.  */
> @@ -38,35 +39,40 @@ posix_spawn_test (void)
>  
>    int ret = posix_spawn (&pid, program, 0, 0, args, environ);
>    if (ret != ENOENT)
> -    error (EXIT_FAILURE, errno, "posix_spawn");
> +    {
> +      errno = ret;
> +      FAIL_EXIT1 ("posix_spawn: %m");
> +    }
>  
>    /* POSIX states the value returned on pid variable in case of an error
>       is not specified.  GLIBC will update the value iff the child
>       execution is successful.  */
>    if (pid != -1)
> -    error (EXIT_FAILURE, errno, "posix_spawn returned pid != -1");
> +    FAIL_EXIT1 ("posix_spawn returned pid != -1 (%i)", (int) pid);
>  
>    /* Check if no child is actually created.  */
>    ret = waitpid (-1, NULL, 0);
>    if (ret != -1 || errno != ECHILD)
> -    error (EXIT_FAILURE, errno, "waitpid");
> +    FAIL_EXIT1 ("waitpid: %m)");
>  
>    /* Same as before, but with posix_spawnp.  */
>    char *args2[] = { (char*) program, 0 };
>  
>    ret = posix_spawnp (&pid, args2[0], 0, 0, args2, environ);
>    if (ret != ENOENT)
> -    error (EXIT_FAILURE, errno, "posix_spawnp");
> +    {
> +      errno = ret;
> +      FAIL_EXIT1 ("posix_spawnp: %m");
> +    }
>  
>    if (pid != -1)
> -    error (EXIT_FAILURE, errno, "posix_spawnp returned pid != -1");
> +    FAIL_EXIT1 ("posix_spawnp returned pid != -1 (%i)", (int) pid);
>  
>    ret = waitpid (-1, NULL, 0);
>    if (ret != -1 || errno != ECHILD)
> -    error (EXIT_FAILURE, errno, "waitpid");
> +    FAIL_EXIT1 ("waitpid: %m)");
>  
>    return 0;
>  }
>  
> -#define TEST_FUNCTION  posix_spawn_test ()
> -#include "../test-skeleton.c"
> +#include <support/test-driver.c>
> diff --git a/posix/tst-spawn3.c b/posix/tst-spawn3.c
> index 8577b03..28a4872 100644
> --- a/posix/tst-spawn3.c
> +++ b/posix/tst-spawn3.c
> @@ -25,10 +25,11 @@
>  #include <unistd.h>
>  #include <sys/wait.h>
>  #include <sys/resource.h>
> +#include <fcntl.h>
> +#include <paths.h>
>  
> -static int do_test (void);
> -#define TEST_FUNCTION           do_test ()
> -#include <test-skeleton.c>
> +#include <support/check.h>
> +#include <support/temp_file.h>
>  
>  static int
>  do_test (void)
> @@ -47,25 +48,20 @@ do_test (void)
>  
>    struct rlimit rl;
>    int max_fd = 24;
> +  int ret;
>  
>    /* Set maximum number of file descriptor to a low value to avoid open
>       too many files in environments where RLIMIT_NOFILE is large and to
>       limit the array size to track the opened file descriptors.  */
>  
>    if (getrlimit (RLIMIT_NOFILE, &rl) == -1)
> -    {
> -      printf ("error: getrlimit RLIMIT_NOFILE failed");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("getrlimit (RLIMIT_NOFILE): %m");
>  
>    max_fd = (rl.rlim_cur < max_fd ? rl.rlim_cur : max_fd);
>    rl.rlim_cur = max_fd;
>  
>    if (setrlimit (RLIMIT_NOFILE, &rl) == 1)
> -    {
> -      printf ("error: setrlimit RLIMIT_NOFILE to %u failed", max_fd);
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("setrlimit (RLIMIT_NOFILE): %m");
>  
>    /* Exhauste the file descriptor limit with temporary files.  */
>    int files[max_fd];
> @@ -76,11 +72,7 @@ do_test (void)
>        if (fd == -1)
>  	{
>  	  if (errno != EMFILE)
> -	    {
> -	      printf ("error: create_temp_file returned -1 with "
> -		      "errno != EMFILE\n");
> -	      exit (EXIT_FAILURE);
> -	    }
> +	    FAIL_EXIT1 ("create_temp_file: %m");
>  	  break;
>  	}
>        files[nfiles++] = fd;
> @@ -88,25 +80,16 @@ do_test (void)
>  
>    posix_spawn_file_actions_t a;
>    if (posix_spawn_file_actions_init (&a) != 0)
> -    {
> -      puts ("error: spawn_file_actions_init failed");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("posix_spawn_file_actions_init");
>  
>    /* Executes a /bin/sh echo $$ 2>&1 > /tmp/tst-spawn3.pid .  */
>    const char pidfile[] = "/tmp/tst-spawn3.pid";
>    if (posix_spawn_file_actions_addopen (&a, STDOUT_FILENO, pidfile, O_WRONLY |
>  					O_CREAT | O_TRUNC, 0644) != 0)
> -    {
> -      puts ("error: spawn_file_actions_addopen failed");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("posix_spawn_file_actions_addopen");
>  
>    if (posix_spawn_file_actions_adddup2 (&a, STDOUT_FILENO, STDERR_FILENO) != 0)
> -    {
> -      puts ("error: spawn_file_actions_addclose");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("posix_spawn_file_actions_adddup2");
>  
>    /* Since execve (called by posix_spawn) might require to open files to
>       actually execute the shell script, setup to close the temporary file
> @@ -114,54 +97,40 @@ do_test (void)
>    for (int i=0; i<nfiles; i++)
>      {
>        if (posix_spawn_file_actions_addclose (&a, files[i]))
> -	{
> -          printf ("error: posix_spawn_file_actions_addclose failed");
> -	  exit (EXIT_FAILURE);
> -	}
> +	FAIL_EXIT1 ("posix_spawn_file_actions_addclose");
>      }
>  
>    char *spawn_argv[] = { (char *) _PATH_BSHELL, (char *) "-c",
>  			 (char *) "echo $$", NULL };
>    pid_t pid;
> -  if (posix_spawn (&pid, _PATH_BSHELL, &a, NULL, spawn_argv, NULL) != 0)
> +  if ((ret = posix_spawn (&pid, _PATH_BSHELL, &a, NULL, spawn_argv, NULL))
> +       != 0)
>      {
> -      puts ("error: posix_spawn failed");
> -      exit (EXIT_FAILURE);
> +      errno = ret;
> +      FAIL_EXIT1 ("posix_spawn: %m");
>      }
>  
>    int status;
>    int err = waitpid (pid, &status, 0);
>    if (err != pid)
> -    {
> -      puts ("error: waitpid failed");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("waitpid: %m");
>  
>    /* Close the temporary files descriptor so it can check posix_spawn
>       output.  */
>    for (int i=0; i<nfiles; i++)
>      {
>        if (close (files[i]))
> -	{
> -	  printf ("error: close failed\n");
> -	  exit (EXIT_FAILURE);
> -	}
> +	FAIL_EXIT1 ("close: %m");
>      }
>  
>    int pidfd = open (pidfile, O_RDONLY);
>    if (pidfd == -1)
> -    {
> -      printf ("error: open pidfile failed\n");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("open: %m");
>  
>    char buf[64];
>    ssize_t n;
>    if ((n = read (pidfd, buf, sizeof (buf))) < 0)
> -    {
> -      printf ("error: read pidfile failed\n");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("read: %m");
>  
>    unlink (pidfile);
>  
> @@ -169,21 +138,14 @@ do_test (void)
>    char *endp;
>    long int rpid = strtol (buf, &endp, 10);
>    if (*endp != '\n')
> -    {
> -      printf ("error: didn't parse whole line: \"%s\"\n", buf);
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("*endp != \'n\'");
>    if (endp == buf)
> -    {
> -      puts ("error: read empty line");
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("read empty line");
>  
>    if (rpid != pid)
> -    {
> -      printf ("error: found \"%s\", expected PID %ld\n", buf, (long int) pid);
> -      exit (EXIT_FAILURE);
> -    }
> +    FAIL_EXIT1 ("found \"%s\", expected pid %ld\n", buf, (long int) pid);
>  
>    return 0;
>  }
> +
> +#include <support/test-driver.c>
>