MPE/iX Intrinsics Reference Manual (32650-90875)

Chapter 7 397
Command Definitions (HP32208-HPLOACNMPROC)
HPFOPEN
0 This value indicates that Non-Block mode is off. This is the
default value.
1 This value indicates that Non-Block mode is on.
Specifying any value other than those described above will result in error.8
80/I32 Reserved for the operating system.
81/I32 Symbolic link option:
This
itemnum allows the caller to specify different options when traversing
through or opening a symbolic link. The valid values for this
itemnum are
described below:
0 Follow symbolic links. This is the default value for this
option. When a symbolic link is encountered it is traversed
according to the path specified in the symbolic link.
1 Does not follow symbolic links. If the final component of a
path is a symbolic link, then no traversal is done and the
symbolic link is opened. Symbolic links that occur prior to
the last component is traversed.
Specifying any value other than those above will result in error.
82-86 Reserved for MPE/iX
87/@64 Large Mapped Access
Returns a pointer to the beginning of file data. This option can be used on
any sized file, but is the only means by which to open files larger than 4 gb
-64kb (4,294,901,760 bytes) for mapped access. Large mapped access
shares the same constraints on file types as the long mapped option
(option 21).
Operation Notes
Enables creation of a new file on a shareable device and defines the physical
characteristics of that file prior to access. Enables access to existing files. Returns a file
number to the calling process that uniquely identifies the file. Use the file number to
reference the file in calls to other intrinsics.
Related Information
Intrinsics FOPEN
Manuals Accessing Files Programmer's Guide, Using KSAM XL, and KSAM/3000
Reference Manual