# ifdef MINIX_68K

# include <limits.h>
# include <sys/types.h>
# include <unistd.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# endif

# ifdef INCLUDE_TELNET
# include "host/telnet.h"
# endif

# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>

/* # define UCHAR(c)    ((char) (c)) */                    /* unsigned character */
# define UCHAR(c)       ((int) ((c) & 0xff))            /* unsigned character */
# define SCHAR(c)       ((char) (c))                    /* signed character */
/* # define SCHAR(c)    ((((char) (c)) - 128) ^ -128) */   /* signed character */

typedef long Int;
typedef unsigned long Uint;

# define ALLOCA(type, size)     ALLOC(type, size)
# define AFREE(ptr)             FREE(ptr)

# define FS_BLOCK_SIZE          1024

extern int   rename             P((char*, char*));              /* simulated */
extern char *crypt              P((const char*, const char*));

# endif /* MINIX_68K */


# ifdef ATARI_ST

# include <limits.h>
# include <sys/types.h>
# include <unistd.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# endif

# ifdef INCLUDE_TELNET
# include "host/telnet.h"
# endif

# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>

# define UCHAR(c)       ((int)((c) & 0xff))     /* unsigned character */
# define SCHAR(c)       ((char) (c))            /* signed character */

typedef int Int;
typedef unsigned int Uint;

# define ALLOCA(type, size)     ((type *) alloca(sizeof(type) * \
                                                 (unsigned int) (size)))
# define AFREE(ptr)             /* on function return */

# define FS_BLOCK_SIZE          512

# define P_fbinio(fp)           ((fp)->_flag |= _IOBIN)

extern char *crypt              P((char*, char*));

# endif /* ATARI_ST */


# ifdef SUNOS4

# include <limits.h>
# include <sys/types.h>
# include <unistd.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# endif

# ifdef INCLUDE_TELNET
# include <arpa/telnet.h>
# endif

# include <alloca.h>
# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>

# define STRUCT_AL      4               /* define this if align(struct) > 2 */
# define UCHAR(c)       ((int) ((c) & 0xff))    /* unsigned character */
# define SCHAR(c)       ((char) (c))            /* signed character */

typedef int Int;
typedef unsigned int Uint;

# define ALLOCA(type, size)     ((type *) alloca(sizeof(type) * \
                                                 (unsigned int) (size)))
# define AFREE(ptr)             /* on function return */

# define FS_BLOCK_SIZE          8192

# define crypt                  _crypt
extern char *crypt              P((const char*, const char*));

# endif /* SUNOS4 */


# ifdef BSD386
# define GENERIC_BSD
# endif
# ifdef LINUX
# define GENERIC_SYSV
# endif

# ifdef GENERIC_BSD

# include <limits.h>
# include <sys/types.h>
# include <unistd.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# endif

# ifdef INCLUDE_TELNET
# include <arpa/telnet.h>
# endif

# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>

# define STRUCT_AL      4               /* define this if align(struct) > 2 */
# define UCHAR(c)       ((int) ((c) & 0xff))    /* unsigned character */
# define SCHAR(c)       ((char) (c))            /* signed character */

typedef int Int;
typedef unsigned int Uint;

# define ALLOCA(type, size)     ((type *) alloca(sizeof(type) * \
                                                 (unsigned int) (size)))
# define AFREE(ptr)             /* on function return */

# define FS_BLOCK_SIZE          8192

# endif       /* GENERIC_BSD */


# ifdef GENERIC_SYSV

# include <limits.h>
# include <sys/types.h>
# include <unistd.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# define FNDELAY        O_NDELAY
# endif

# ifdef INCLUDE_TELNET
# include <arpa/telnet.h>
# endif

# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>

# define STRUCT_AL      4               /* define this if align(struct) > 2 */
# define UCHAR(c)       ((int) ((c) & 0xff))    /* unsigned character */
# define SCHAR(c)       ((char) (c))            /* signed character */

typedef int Int;
typedef unsigned int Uint;

# define ALLOCA(type, size)     ((type *) alloca(sizeof(type) * \
                                                 (unsigned int) (size)))
# define AFREE(ptr)             /* on function return */

# define FS_BLOCK_SIZE          8192

# endif /* GENERIC_SYSV */


# ifdef AMIGA

# include <sys/types.h>

# ifdef INCLUDE_FILE_IO
# include <fcntl.h>
# include <sys/stat.h>
# ifdef __SASC
# include <stat.h>
# endif
# endif

# ifdef INCLUDE_TELNET
# include "host/telnet.h"
# endif

# ifndef __SASC
# include <alloca.h>
# endif
# include <stdlib.h>
# include <string.h>
# include <setjmp.h>
# include <stdio.h>
# include <limits.h>

# define STRUCT_AL      4               /* define this if align(struct) > 2 */
# define UCHAR(c)       (int)((c)&0xFF) /* unsigned character */
# define SCHAR(c)       (c)             /* signed character */

typedef int Int;
typedef unsigned long Uint;

# ifndef __SASC
# define ALLOCA(type, size)     ((type *) alloca(sizeof(type) * \
                                                 (unsigned int) (size)))
# define AFREE(ptr)             /* on function return */
# else
# define ALLOCA(type, size)     ALLOC(type, size)
# define AFREE(ptr)             FREE(ptr)
# endif

# define FS_BLOCK_SIZE          512  /* valid for FFS */

extern char *crypt              P((char*, char*));
extern void P_finish P((void));

# endif /* AMIGA */


extern void  P_getevent P((void));
extern void  P_message  P((char*));

# ifndef P_fbinio
# define P_fbinio(x)    /* nothing */
# endif
# ifndef O_BINARY
# define O_BINARY       0
# endif

extern bool  P_opendir  P((char*));
extern char *P_readdir  P((void));
extern void  P_closedir P((void));

extern void  P_srandom  P((long));
extern long  P_random   P((void));

extern Uint  P_time     P((void));
extern char *P_ctime    P((Uint));

extern void  P_alarm    P((unsigned int));
extern bool  P_timeout  P((void));


/* these must be the same on all hosts */
# define BEL    '\007'
# define BS     '\010'
# define HT     '\011'
# define LF     '\012'
# define VT     '\013'
# define FF     '\014'
# define CR     '\015'

# define ALIGN(x, s)    (((x) + (s) - 1) & ~((s) - 1))