HPUX types[5]

 types(5)                                                           types(5)





 NAME
      types - primitive system data types

 SYNOPSIS
      #include <sys/types.h>

 REMARKS
      The example given on this page is a typical version; the type names
      are in general expected to be present, although exceptions can be
      described in DEPENDENCIES.  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 actually a shorthand for a commonly used type, and will not
      vary.

 DESCRIPTION
      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:

           l l.  typedef struct { int r[1]; }     *physadr; typedef
           long             daddr_t; typedef char             *caddr_t;
           typedef unsigned int     uint; typedef unsigned short   ushort;
           typedef ushort           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 short            pid_t;
           typedef long             uid_t; typedef long             gid_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.

           daddr_t     used for disk addresses except in an inode on disk,
                       see fs(4).

           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.

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




 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992






 types(5)                                                           types(5)





           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       offsets measured in bytes from the beginning of a
                       file.

           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
                       identifiers.

           uid_t       used to specify user identifiers.

           gid_t       user to specify group identifiers.

 DEPENDENCIES
      HP Clustered Environment
           The following additional type is defined:

                typedef ushort  cnode_t;

           cnode_t is the cnode ID of a machine in a cluster.

 SEE ALSO
      fs(4), stdipc(3C).

 STANDARDS CONFORMANCE
      <sys/types.h>: AES, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1


















 Hewlett-Packard Company            - 2 -     HP-UX Release 9.0: August 1992