Blame libio/tst-eof.c

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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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static void do_prepare (void);
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#define PREPARE(argc, argv) do_prepare ()
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static int do_test (void);
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#define TEST_FUNCTION do_test ()
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#include <test-skeleton.c>
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int fd;
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static void
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do_prepare (void)
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{
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  fd = create_temp_file ("tst-eof.", NULL);
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  if (fd == -1)
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    {
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      printf ("cannot create temporary file: %m\n");
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      exit (1);
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    }
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}
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static int
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do_test (void)
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{
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  char buf[40];
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  FILE *fp;
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  if (write (fd, "some string\n", 12) != 12)
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    {
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      printf ("cannot write temporary file: %m\n");
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      return 1;
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    }
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  if (lseek (fd, 0, SEEK_SET) == (off_t) -1)
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    {
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      printf ("cannot reposition temporary file: %m\n");
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      return 1;
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    }
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  fp = fdopen (fd, "r");
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  if (fp == NULL)
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    {
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      printf ("cannot create stream: %m\n");
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      return 1;
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    }
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  if (feof (fp))
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    {
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      puts ("EOF set after fdopen");
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      return 1;
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    }
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  if (fread (buf, 1, 20, fp) != 12)
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    {
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      puts ("didn't read the correct number of bytes");
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      return 1;
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    }
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  if (! feof (fp))
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    {
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      puts ("EOF not set after fread");
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      return 1;
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    }
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  fclose (fp);
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  return 0;
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}