types man page on HP-UX

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types(5)							      types(5)

NAME
       types - primitive system data types

SYNOPSIS
DESCRIPTION
   Remarks
       The example given on this page is a typical version. The type names are
       in general expected to be present, although exceptions (if any) may  be
       described  in  In most cases the fundamental type which implements each
       typedef is implementation dependent as long as source code  which  uses
       those typedefs need not be changed.  In some cases the typedef is actu‐
       ally a shorthand for a commonly used type, and will not vary.

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

	      typedef struct { int r[1]; }  *physadr;
	      typedef char		    *caddr_t;
	      typedef unsigned int	    uint;
	      typedef unsigned short	    ushort;
	      typedef unsigned long	    ino_t;
	      typedef short		    cnt_t;
	      typedef long		    time_t;
	      typedef long		    dev_t;
	      typedef long		    off_t;
	      typedef long		    paddr_t;
	      typedef long		    key_t;
	      typedef int32_t		    pid_t;
	      typedef long		    uid_t;
	      typedef long		    gid_t;
	      typedef long		    blkcnt_t;

       Note that the defined names above are standardized, but the actual type
       to which they are defined may vary between HP-UX implementations.

       The meanings of the types are:

	      physadr	  used as a pointer to memory; the pointer is  aligned
			  to  follow hardware-dependent instruction addressing
			  conventions.

	      caddr_t	  used as an untyped pointer or a pointer  to  untyped
			  memory.

	      uint	  shorthand for unsigned integer.

	      ushort	  shorthand for unsigned short.

	      ino_t	  used	to specify I-numbers.  All native file systems
			  (including HFS and VxFS 3.5) through HP-UX 11i,  use
			  values  that	will  fit within 32-bits.  Some remote
			  NFS servers may use larger  values,  which  will  be
			  truncated  without error for 32-bit applications and
			  may not result in unique values.

	      cnt_t	  used	in  some  implementations  to  hold  reference
			  counts for some kernel data structures.

	      time_t	  time	encoded in seconds since 00:00:00 GMT, January
			  1, 1970.

	      dev_t	  specifies kind and unit number of a device,  encoded
			  in two parts known as major and minor.

	      off_t	  offset  measured  in	bytes  from the beginning of a
			  file.	 If a 32-bit application is compiled  with  or
			  off_t will become an int64_t.

	      paddr_t	  used	as  an integer type which is properly sized to
			  hold a pointer.

	      key_t	  the type of a key used to obtain  a  message	queue,
			  semaphore,   or   shared   memory   identifier,  see
			  stdipc(3C).

	      pid_t	  used to specify process and  process	group  identi‐
			  fiers.

	      uid_t	  used to specify user identifiers.

	      gid_t	  user to specify group identifiers.

	      blkcnt_t	  disk	quota or transfer size measured in blocks.  If
			  a 32-bit application is compiled  with  or  blkcnt_t
			  will become an int64_t.

STANDARDS CONFORMANCE
								      types(5)
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