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    fpIOperm

    Set permission on IO ports.

    Declaration

    Source position: x86.pp line 49

    function fpIOperm(From: Cardinal; Num: Cardinal; Value: cint) : cint;

    Description

    FpIOperm sets permissions on Num ports starting with port From to Value. The function returns zero if the call was successful, a nonzero value otherwise.

    Note:

    • This works ONLY as root.
    • Only the first 0x03ff ports can be set.
    • When doing a FpFork, the permissions are reset. When doing a FpExecVE they are kept.

    Errors

    Extended error information can be retrieved with FpGetErrno