pSOSystem System Calls - Read

2 pHILE+ System Calls
This chapter provides detailed information on each system call in the pHILE+
component of pSOSystem. The calls are listed alphabetically, with a multipage
section of information for each call. Each call’s section includes its syntax, the
volume types it applies to, a detailed description, its arguments, its return value,
and any error codes that it can return. Where applicable, the section also includes
the headings “Notes”, “Usage”, and “See Also”. “Notes” contains any important
information not specifically related to the call description, “Usage” provides detailed
usage information, and “See Also” indicates other calls that have related
information.
Structures described in this chapter are also defined in the file .
Structures must be word-aligned and must not be packed.
If you need to look up a system call by its functionality, refer to Appendix A, “Tables
of System Calls,” which lists the calls alphabetically by component and provides a
brief description of each call.
The following table shows the file systems that each pHILE+ call supports. If a call
supports a particular file system, the table entry is “yes.” Otherwise, the table entry
is the error message produced when a call is either incorrectly used on a file system
or attempted on an unsupported file system. Error codes are described in the call
descriptions within this chapter, and also in Appendix B, “Error Codes.”
TABLE 2-1 File Systems Supported by pHILE+ Calls
Syscall/
Filesystem
pHILE+ MS-DOS NFS CD-ROM
access_f E_FUNC E_BADMS yes E_BADCD
annex_f yes E_BADMS E_BADNFS E_BADCD
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