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    FpAccess

    Check file access.

    Declaration

    Source position: bunxh.inc line 93

    function FpAccess(pathname: PAnsiChar; aMode: cint) : cint;external name 'FPC_SYSC_ACCESS';

    function FpAccess(const pathname: RawByteString; aMode: cint) : cint;

    Description

    FpAccess tests user's access rights on the specified file. Mode is a mask existing of one or more of the following:

    R_OK
    User has read rights.
    W_OK
    User has write rights.
    X_OK
    User has execute rights.
    F_OK
    File exists.

    The test is done with the real user ID, instead of the effective user ID. If the user has the requested rights, zero is returned. If access is denied, or an error occurred, a nonzero value is returned.

    Errors

    Extended error information can be retrieved using fpGetErrno.

    sys_eaccess
    The requested access is denied, either to the file or one of the directories in its path.
    sys_einval
    Mode was incorrect.
    sys_enoent
    A directory component in Path doesn't exist or is a dangling symbolic link.
    sys_enotdir
    A directory component in Path is not a directory.
    sys_enomem
    Insufficient kernel memory.
    sys_eloop
    Path has a circular symbolic link.

    See also

    Name Description
    FpChown Change owner of file.
    FpChmod Change file permission bits.

    Example

    Program Example26;

{ Program to demonstrate the Access function. }

Uses BaseUnix;

begin
  if fpAccess ('/etc/passwd',W_OK)=0 then
    begin
    Writeln ('Better check your system.');
    Writeln ('I can write to the /etc/passwd file !');
    end;
end.