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  • danny
    #1

    Files

    hi

    could somone please tell me or point to a sorece of information which will
    explain what is happeneing on a physical level when i open/create a file in
    C.

    Danny


    Tags: None
    • Victor Bazarov
      #2
      Re: Files

      danny wrote:[color=blue]
      > could somone please tell me or point to a sorece of information which will
      > explain what is happeneing on a physical level when i open/create a file in
      > C.[/color]

      First, for questions about C language, go to comp.lang.c. This is
      a newsgroup for C++, and those are two different languages.

      Second, if you want to know what's happening on a physical level,
      asking in a language newsgroup doesn't make much sense. Language is
      full of abstractions. Physical stuff is platform-specific. Ask in
      a newsgroup dedicated to your OS.

      V

        Comment

        • Howard
          #3
          Re: Files


          "danny" <dan.removetose ndschofield@vir gin.net> wrote in message
          news:Rj4Zc.119$ bw2.96@newsfe3-win.ntli.net...[color=blue]
          > hi
          >
          > could somone please tell me or point to a sorece of information which will
          > explain what is happeneing on a physical level when i open/create a file[/color]
          in[color=blue]
          > C.
          >
          > Danny
          >
          >[/color]

          On a physical level? What do you mean? Mechanically, inside a floppy
          drive? At the operating system level? If you can narrow down what you mean
          by the "physical" level, that alone will likely point you towards a better
          newsgroup to ask such questions. For example, there are newsgroups that
          discuss operating systems. And newsgroups for specific implementations ,
          such as for Borland or Microsoft products. In any case, nothing in the C++
          standard specifies anything about how files are opened (or even that they
          exist, as far as I know). (Also, note that this is a C++ newsgroup, not a C
          newsgroup.) You might also try some searching on groups.google.c om. That's
          a very handy source of links to info.

          -Howard




            Comment

            • Mike Wahler
              #4
              Re: Files

              "danny" <dan.removetose ndschofield@vir gin.net> wrote in message
              news:Rj4Zc.119$ bw2.96@newsfe3-win.ntli.net...[color=blue]
              > hi
              >
              > could somone please tell me or point to a sorece of information which will
              > explain what is happeneing on a physical level when i open/create a file[/color]
              in[color=blue]
              > C.[/color]

              1. This newsgroup discusses only C++, not C.
              comp.lang.c is just down the hall on the left.

              2. Both C and C++ use abstractions ('streams') to
              represent files. Neither specify a particular
              implementation or 'physical' behavior. This is
              because both languages are intentionally designed
              to be platform-independent. E.g. it's perfectly
              valid for a call to 'fopen()' to cause a drawer
              of the filing cabinet in my office to slide open.

              -Mike


                Comment

                • Till Crueger
                  #5
                  Re: Files

                  On Tue, 31 Aug 2004 19:44:05 +0000, Mike Wahler wrote:[color=blue]
                  > it's perfectly valid for a call to 'fopen()' to cause a drawer of the
                  > filing cabinet in my office to slide open.[/color]

                  Can I quote you on that?

                  Till
                  --
                  Please add "Salt and Peper" to the subject line to bypass my spam filter

                    Comment

                    • Mike Wahler
                      #6
                      Re: Files


                      "Till Crueger" <TillFC@gmx.net > wrote in message
                      news:ch2phj$urq $1@f1node01.rhr z.uni-bonn.de...[color=blue]
                      > On Tue, 31 Aug 2004 19:44:05 +0000, Mike Wahler wrote:[color=green]
                      > > it's perfectly valid for a call to 'fopen()' to cause a drawer of the
                      > > filing cabinet in my office to slide open.[/color]
                      >
                      > Can I quote you on that?[/color]

                      Yes.

                      -Mike


                        Comment

                        • Karthik Kumar
                          #7
                          [OT] Re: Files

                          danny wrote:
                          [color=blue]
                          > hi
                          >
                          > could somone please tell me or point to a sorece of information which will
                          > explain what is happeneing on a physical level when i open/create a file in
                          > C.
                          >
                          > Danny
                          >
                          >[/color]
                          As far as C is concerned, this particular operation is transparent.
                          This would be defined by the implementation that you choose ( glibc / MS
                          VC++ etc).
                          If at all you are interested for *nix OS, then get the classic book
                          by Maurice Bach - "The Design of the UNIX Operating System" where you
                          get to know about inodes etc.

                          --
                          Karthik.

                            Comment

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