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TYPES(5)                      File Formats Manual                     TYPES(5)



NAME
       types - primitive system data types

SYNOPSIS
       #include <sys/types.h>

DESCRIPTION
       The  data  types  defined  in  the include file are used in UNIX system
       code; some data of these types are accessible to user code:

       /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
          This file is part of the GNU C Library.

          The GNU C Library is free software; you can redistribute it and/or
          modify it under the terms of the GNU Lesser General Public
          License as published by the Free Software Foundation; either
          version 2.1 of the License, or (at your option) any later version.

          The GNU C Library is distributed in the hope that it will be useful,
          but WITHOUT ANY WARRANTY; without even the implied warranty of
          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
          Lesser General Public License for more details.

          You should have received a copy of the GNU Lesser General Public
          License along with the GNU C Library; if not, see
          <https://www.gnu.org/licenses/>.  */

       /*
        *   POSIX Standard: 2.6 Primitive System Data Types   <sys/types.h>
        */

       #ifndef   _SYS_TYPES_H
       #define   _SYS_TYPES_H   1

       #include <features.h>

       __BEGIN_DECLS

       #include <bits/types.h>

       #ifdef    __USE_MISC
       # ifndef __u_char_defined
       typedef __u_char u_char;
       typedef __u_short u_short;
       typedef __u_int u_int;
       typedef __u_long u_long;
       typedef __quad_t quad_t;
       typedef __u_quad_t u_quad_t;
       typedef __fsid_t fsid_t;
       #  define __u_char_defined
       # endif
       typedef __loff_t loff_t;
       #endif

       #ifndef __ino_t_defined
       # ifndef __USE_FILE_OFFSET64
       typedef __ino_t ino_t;
       # else
       typedef __ino64_t ino_t;
       # endif
       # define __ino_t_defined
       #endif
       #if defined __USE_LARGEFILE64 && !defined __ino64_t_defined
       typedef __ino64_t ino64_t;
       # define __ino64_t_defined
       #endif

       #ifndef __dev_t_defined
       typedef __dev_t dev_t;
       # define __dev_t_defined
       #endif

       #ifndef __gid_t_defined
       typedef __gid_t gid_t;
       # define __gid_t_defined
       #endif

       #ifndef __mode_t_defined
       typedef __mode_t mode_t;
       # define __mode_t_defined
       #endif

       #ifndef __nlink_t_defined
       typedef __nlink_t nlink_t;
       # define __nlink_t_defined
       #endif

       #ifndef __uid_t_defined
       typedef __uid_t uid_t;
       # define __uid_t_defined
       #endif

       #ifndef __off_t_defined
       # ifndef __USE_FILE_OFFSET64
       typedef __off_t off_t;
       # else
       typedef __off64_t off_t;
       # endif
       # define __off_t_defined
       #endif
       #if defined __USE_LARGEFILE64 && !defined __off64_t_defined
       typedef __off64_t off64_t;
       # define __off64_t_defined
       #endif

       #ifndef __pid_t_defined
       typedef __pid_t pid_t;
       # define __pid_t_defined
       #endif

       #if (defined __USE_XOPEN || defined __USE_XOPEN2K8)     && !defined __id_t_defined
       typedef __id_t id_t;
       # define __id_t_defined
       #endif

       #ifndef __ssize_t_defined
       typedef __ssize_t ssize_t;
       # define __ssize_t_defined
       #endif

       #ifdef    __USE_MISC
       # ifndef __daddr_t_defined
       typedef __daddr_t daddr_t;
       typedef __caddr_t caddr_t;
       #  define __daddr_t_defined
       # endif
       #endif

       #if (defined __USE_MISC || defined __USE_XOPEN) && !defined __key_t_defined
       typedef __key_t key_t;
       # define __key_t_defined
       #endif

       #if defined __USE_XOPEN || defined __USE_XOPEN2K8
       # include <bits/types/clock_t.h>
       #endif
       #include <bits/types/clockid_t.h>
       #include <bits/types/time_t.h>
       #include <bits/types/timer_t.h>

       #ifdef __USE_XOPEN
       # ifndef __useconds_t_defined
       typedef __useconds_t useconds_t;
       #  define __useconds_t_defined
       # endif
       # ifndef __suseconds_t_defined
       typedef __suseconds_t suseconds_t;
       #  define __suseconds_t_defined
       # endif
       #endif

       #define   __need_size_t
       #include <stddef.h>

       #ifdef __USE_MISC
       /* Old compatibility names for C types.  */
       typedef unsigned long int ulong;
       typedef unsigned short int ushort;
       typedef unsigned int uint;
       #endif

       /* These size-specific names are used by some of the inet code.  */

       #include <bits/stdint-intn.h>

       /* These were defined by ISO C without the first `_'.  */
       typedef __uint8_t u_int8_t;
       typedef __uint16_t u_int16_t;
       typedef __uint32_t u_int32_t;
       typedef __uint64_t u_int64_t;

       #if __GNUC_PREREQ (2, 7)
       typedef int register_t __attribute__ ((__mode__ (__word__)));
       #else
       typedef int register_t;
       #endif

       /* Some code from BIND tests this macro to see if the types above are
          defined.  */
       #define __BIT_TYPES_DEFINED__ 1


       #ifdef    __USE_MISC
       /* In BSD <sys/types.h> is expected to define BYTE_ORDER.  */
       # include <endian.h>

       /* It also defines `fd_set' and the FD_* macros for `select'.  */
       # include <sys/select.h>
       #endif /* Use misc.  */


       #if (defined __USE_UNIX98 || defined __USE_XOPEN2K8)     && !defined __blksize_t_defined
       typedef __blksize_t blksize_t;
       # define __blksize_t_defined
       #endif

       /* Types from the Large File Support interface.  */
       #ifndef __USE_FILE_OFFSET64
       # ifndef __blkcnt_t_defined
       typedef __blkcnt_t blkcnt_t;   /* Type to count number of disk blocks.  */
       #  define __blkcnt_t_defined
       # endif
       # ifndef __fsblkcnt_t_defined
       typedef __fsblkcnt_t fsblkcnt_t; /* Type to count file system blocks.  */
       #  define __fsblkcnt_t_defined
       # endif
       # ifndef __fsfilcnt_t_defined
       typedef __fsfilcnt_t fsfilcnt_t; /* Type to count file system inodes.  */
       #  define __fsfilcnt_t_defined
       # endif
       #else
       # ifndef __blkcnt_t_defined
       typedef __blkcnt64_t blkcnt_t;        /* Type to count number of disk blocks.  */
       #  define __blkcnt_t_defined
       # endif
       # ifndef __fsblkcnt_t_defined
       typedef __fsblkcnt64_t fsblkcnt_t; /* Type to count file system blocks.  */
       #  define __fsblkcnt_t_defined
       # endif
       # ifndef __fsfilcnt_t_defined
       typedef __fsfilcnt64_t fsfilcnt_t; /* Type to count file system inodes.  */
       #  define __fsfilcnt_t_defined
       # endif
       #endif

       #ifdef __USE_LARGEFILE64
       typedef __blkcnt64_t blkcnt64_t;     /* Type to count number of disk blocks. */
       typedef __fsblkcnt64_t fsblkcnt64_t; /* Type to count file system blocks.  */
       typedef __fsfilcnt64_t fsfilcnt64_t; /* Type to count file system inodes.  */
       #endif


       /* Now add the thread types.  */
       #if defined __USE_POSIX199506 || defined __USE_UNIX98
       # include <bits/pthreadtypes.h>
       #endif

       __END_DECLS

       #endif /* sys/types.h */

       The form daddr_t is used for disk addresses  except  in  an  i-node  on
       disk,  see filsys(5).  Times are encoded in seconds since 00:00:00 GMT,
       January 1, 1970.  The major and minor parts of a  device  code  specify
       kind  and unit number of a device and are installation-dependent.  Off‐
       sets are measured in bytes from the beginning of a file.   The  label_t
       variables are used to save the processor state while another process is
       running.

SEE ALSO
       filsys(5), time(2), lseek(2), adb(1)



                                                                      TYPES(5)