/* confdefs.h.  */
#define PACKAGE_NAME "GNU tar"
#define PACKAGE_TARNAME "tar"
#define PACKAGE_VERSION "1.22"
#define PACKAGE_STRING "GNU tar 1.22"
#define PACKAGE_BUGREPORT "bug-tar@gnu.org"
#define PACKAGE "tar"
#define VERSION "1.22"
#define _GNU_SOURCE 1
#define STDC_HEADERS 1
#define HAVE_SYS_TYPES_H 1
#define HAVE_SYS_STAT_H 1
#define HAVE_STDLIB_H 1
#define HAVE_STRING_H 1
#define HAVE_MEMORY_H 1
#define HAVE_STRINGS_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_STDINT_H 1
#define HAVE_UNISTD_H 1
#define __EXTENSIONS__ 1
#define _ALL_SOURCE 1
#define _GNU_SOURCE 1
#define _POSIX_PTHREAD_SEMANTICS 1
#define _TANDEM_SOURCE 1
#define HAVE_FSEEKO 1
#define HAVE_FCNTL_H 1
#define HAVE_MEMORY_H 1
#define HAVE_STRING_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_SYS_MTIO_H 1
#define HAVE_SYS_TIME_H 1
#define HAVE_UNISTD_H 1
#define HAVE_LOCALE_H 1
#define HAVE_FEATURES_H 1
#define HAVE_DIRENT_H 1
#define HAVE_ERRNO_H 1
#define HAVE_FLOAT_H 1
#define HAVE_WCTYPE_H 1
#define HAVE_STDINT_H 1
#define HAVE_WCHAR_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_STDARG_H 1
#define HAVE_STDIO_H 1
#define HAVE_STDLIB_H 1
#define HAVE_SYS_SOCKET_H 1
#define HAVE_STRINGS_H 1
#define HAVE_SYS_STAT_H 1
#define HAVE_SYSEXITS_H 1
#define HAVE_TIME_H 1
#define HAVE_UTIME_H 1
#define HAVE_NETDB_H 1
#define HAVE_SYS_WAIT_H 1
#define HAVE_PWD_H 1
#define HAVE_GRP_H 1
#define HAVE_SYS_WAIT_H 1
#define HAVE__BOOL 1
#define HAVE_STDBOOL_H 1
#define HAVE_DIRENT_H 1
#define STDC_HEADERS 1
#define RETSIGTYPE void
#define major_t int
#define minor_t int
#define HAVE_ALLOCA_H 1
#define HAVE_ALLOCA 1
#define restrict __restrict
#define HAVE_DECL_GETENV 1
#define HAVE_DECL_CLEARERR_UNLOCKED 0
#define HAVE_DECL_FEOF_UNLOCKED 0
#define HAVE_DECL_FERROR_UNLOCKED 0
#define HAVE_DECL_FFLUSH_UNLOCKED 0
#define HAVE_DECL_FGETS_UNLOCKED 0
#define HAVE_DECL_FPUTC_UNLOCKED 0
#define HAVE_DECL_FPUTS_UNLOCKED 0
#define HAVE_DECL_FREAD_UNLOCKED 0
#define HAVE_DECL_FWRITE_UNLOCKED 0
#define HAVE_DECL_GETC_UNLOCKED 1
#define HAVE_DECL_GETCHAR_UNLOCKED 1
#define HAVE_DECL_PUTC_UNLOCKED 1
#define HAVE_DECL_PUTCHAR_UNLOCKED 1
#define HAVE_FLOCKFILE 1
#define HAVE_FUNLOCKFILE 1
#define HAVE_PATHCONF 1
#define HAVE_BTOWC 1
#define HAVE_CANONICALIZE_FILE_NAME 1
#define HAVE_GETCWD 1
#define HAVE_READLINK 1
#define HAVE_DUP2 1
#define HAVE_FCHDIR 1
#define HAVE_ISBLANK 1
#define HAVE_ISWCTYPE 1
#define HAVE_MBSRTOWCS 1
#define HAVE_MEMPCPY 1
#define HAVE_WMEMCHR 1
#define HAVE_WMEMCPY 1
#define HAVE_FTRUNCATE 1
#define HAVE_GETTIMEOFDAY 1
#define HAVE_LSTAT 1
#define HAVE_MBSINIT 1
#define HAVE_MBRTOWC 1
#define HAVE_ALARM 1
#define HAVE_FDOPENDIR 1
#define HAVE_WCSCOLL 1
#define HAVE_SETENV 1
#define HAVE_PIPE 1
#define HAVE_FUTIMES 1
#define HAVE_FUTIMESAT 1
#define HAVE_FUTIMENS 1
#define HAVE_UTIMENSAT 1
#define HAVE_VASNPRINTF 1
#define HAVE_WCRTOMB 1
#define HAVE_ISWCNTRL 1
#define HAVE_WCWIDTH 1
#define HAVE_MKFIFO 1
#define HAVE_SETLOCALE 1
#define D_INO_IN_DIRENT 1
#define FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX 1
#define FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR 1
#define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
#define HAVE_LONG_FILE_NAMES 1
#define HAVE_LANGINFO_CODESET 1
#define HAVE_DECL_CANONICALIZE_FILE_NAME 1
#define HAVE_UNISTD_H 1
#define HAVE_CHOWN 1
#define DOUBLE_SLASH_IS_DISTINCT_ROOT 1
#define HAVE_DECL_STRERROR_R 1
#define HAVE_STRERROR_R 1
#define STRERROR_R_CHAR_P 1
#define HAVE_MBSTATE_T 1
#define HAVE_DECL_GETCWD 1
#define HAVE_COMPOUND_LITERALS 1
#define HAVE_DECL_GETDELIM 1
#define HAVE_DECL_GETLINE 1
#define HAVE_GETOPT_H 1
#define HAVE_GETOPT_LONG_ONLY 1
#define HAVE_LONG_LONG_INT 1
#define HAVE_UNSIGNED_LONG_LONG_INT 1
#define HAVE_INTTYPES_H 1
#define HAVE_DECL_IMAXABS 1
#define HAVE_DECL_IMAXDIV 1
#define HAVE_DECL_STRTOIMAX 1
#define HAVE_DECL_STRTOUMAX 1
#define HAVE_STDLIB_H 1
#define MALLOC_0_IS_NONNULL 1
#define HAVE_MBRTOWC 1
#define HAVE_DECL_MEMRCHR 0
#define HAVE_DECL_SNPRINTF 1
#define HAVE_DECL_STRDUP 1
#define HAVE_DECL_STRNDUP 1
#define HAVE_DECL_STRNLEN 1
#define HAVE_UTIME_NULL 1
#define HAVE_STRUCT_UTIMBUF 1
#define HAVE_WORKING_UTIMES 1
#define HAVE_WCHAR_T 1
#define HAVE_WINT_T 1
#define HAVE_INTTYPES_H_WITH_UINTMAX 1
#define HAVE_STDINT_H_WITH_UINTMAX 1
#define HAVE_INTMAX_T 1
#define HAVE_DECL_VSNPRINTF 1
#define HAVE_ALLOCA 1
#define __GETOPT_PREFIX rpl_
#define GNULIB_PROGRAM_INVOCATION_NAME 1
#define GNULIB_PROGRAM_INVOCATION_SHORT_NAME 1
#define GNULIB_CANONICALIZE_LGPL 1
#define HAVE_CLOCK_GETTIME 1
#define GNULIB_CLOSE_STREAM 1
#define D_INO_IN_DIRENT 1
#define HAVE_DIRFD 1
#define HAVE_DECL_DIRFD 1
#define DOUBLE_SLASH_IS_DISTINCT_ROOT 1
#define HAVE_ENVIRON_DECL 1
#define HAVE_WORKING_O_NOATIME 0
#define HAVE_WORKING_O_NOFOLLOW 1
#define GNULIB_FCNTL_SAFER 1
#define HAVE_STRUCT_STAT_ST_BLOCKS 1
#define HAVE_ST_BLOCKS 1
#define HAVE_DECL_ISBLANK 1
#define fnmatch gnu_fnmatch
#define HAVE_DECL___FPENDING 0
#define PENDING_OUTPUT_N_BYTES fp->_p - fp->_bf._base
/* end confdefs.h.  */

#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>

#ifndef AT_FDCWD
# define AT_FDCWD 0
#endif
#ifdef ENAMETOOLONG
# define is_ENAMETOOLONG(x) ((x) == ENAMETOOLONG)
#else
# define is_ENAMETOOLONG(x) 0
#endif

/* Don't get link errors because mkdir is redefined to rpl_mkdir.  */
#undef mkdir

#ifndef S_IRWXU
# define S_IRWXU 0700
#endif

/* The length of this name must be 8.  */
#define DIR_NAME "confdir3"
#define DIR_NAME_LEN 8
#define DIR_NAME_SIZE (DIR_NAME_LEN + 1)

/* The length of "../".  */
#define DOTDOTSLASH_LEN 3

/* Leftover bytes in the buffer, to work around library or OS bugs.  */
#define BUF_SLOP 20

int
main ()
{
#ifndef PATH_MAX
  /* The Hurd doesn't define this, so getcwd can't exhibit the bug --
     at least not on a local file system.  And if we were to start worrying
     about remote file systems, we'd have to enable the wrapper function
     all of the time, just to be safe.  That's not worth the cost.  */
  exit (0);
#elif ((INT_MAX / (DIR_NAME_SIZE / DOTDOTSLASH_LEN + 1)         - DIR_NAME_SIZE - BUF_SLOP)        <= PATH_MAX)
  /* FIXME: Assuming there's a system for which this is true,
     this should be done in a compile test.  */
  exit (0);
#else
  char buf[PATH_MAX * (DIR_NAME_SIZE / DOTDOTSLASH_LEN + 1)
	   + DIR_NAME_SIZE + BUF_SLOP];
  char *cwd = getcwd (buf, PATH_MAX);
  size_t initial_cwd_len;
  size_t cwd_len;
  int fail = 0;
  size_t n_chdirs = 0;

  if (cwd == NULL)
    exit (1);

  cwd_len = initial_cwd_len = strlen (cwd);

  while (1)
    {
      size_t dotdot_max = PATH_MAX * (DIR_NAME_SIZE / DOTDOTSLASH_LEN);
      char *c = NULL;

      cwd_len += DIR_NAME_SIZE;
      /* If mkdir or chdir fails, it could be that this system cannot create
	 any file with an absolute name longer than PATH_MAX, such as cygwin.
	 If so, leave fail as 0, because the current working directory can't
	 be too long for getcwd if it can't even be created.  For other
	 errors, be pessimistic and consider that as a failure, too.  */
      if (mkdir (DIR_NAME, S_IRWXU) < 0 || chdir (DIR_NAME) < 0)
	{
	  if (! (errno == ERANGE || is_ENAMETOOLONG (errno)))
	    fail = 2;
	  break;
	}

      if (PATH_MAX <= cwd_len && cwd_len < PATH_MAX + DIR_NAME_SIZE)
	{
	  c = getcwd (buf, PATH_MAX);
	  if (!c && errno == ENOENT)
	    {
	      fail = 1;
	      break;
	    }
	  if (c || ! (errno == ERANGE || is_ENAMETOOLONG (errno)))
	    {
	      fail = 2;
	      break;
	    }
	}

      if (dotdot_max <= cwd_len - initial_cwd_len)
	{
	  if (dotdot_max + DIR_NAME_SIZE < cwd_len - initial_cwd_len)
	    break;
	  c = getcwd (buf, cwd_len + 1);
	  if (!c)
	    {
	      if (! (errno == ERANGE || errno == ENOENT
		     || is_ENAMETOOLONG (errno)))
		{
		  fail = 2;
		  break;
		}
	      if (AT_FDCWD || errno == ERANGE || errno == ENOENT)
		{
		  fail = 1;
		  break;
		}
	    }
	}

      if (c && strlen (c) != cwd_len)
	{
	  fail = 2;
	  break;
	}
      ++n_chdirs;
    }

  /* Leaving behind such a deep directory is not polite.
     So clean up here, right away, even though the driving
     shell script would also clean up.  */
  {
    size_t i;

    /* Try rmdir first, in case the chdir failed.  */
    rmdir (DIR_NAME);
    for (i = 0; i <= n_chdirs; i++)
      {
	if (chdir ("..") < 0)
	  break;
	if (rmdir (DIR_NAME) != 0)
	  break;
      }
  }

  exit (fail);
#endif
}