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/* Check that the syscalls implementing fdopen work trivially.  */

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <sys/stat.h>

#include <fcntl.h>

void

perr (const char *s)

{

  perror (s);

  exit (1);

}

int

main (void)

{

  FILE *f;

  int fd;

  const char fname[] = "sk1test.dat";

  const char tsttxt1[]

    = "This is the first and only line of this file.\n";

  char buf[sizeof (tsttxt1)] = "";

  fd = open (fname, O_WRONLY|O_TRUNC|O_CREAT, S_IRWXU);

  if (fd <= 0)

    perr ("open-w");

  f = fdopen (fd, "w");

  if (f == NULL

      || fwrite (tsttxt1, 1, strlen (tsttxt1), f) != strlen (tsttxt1))

    perr ("fdopen or fwrite");

  if (fclose (f) != 0)

    perr ("fclose");

  fd = open (fname, O_RDONLY);

  if (fd <= 0)

    perr ("open-r");

  f = fdopen (fd, "r");

  if (f == NULL

      || fread (buf, 1, sizeof (buf), f) != strlen (tsttxt1)

      || strcmp (buf, tsttxt1) != 0

      || fclose (f) != 0)

    {

      printf ("fail\n");

      exit (1);

    }

  printf ("pass\n");

  exit (0);

}