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    SubjectRe: Intercepting system calls
    On Thu, Dec 22, 2011 at 5:59 PM, Gaurav Saxena <> wrote:
    > Hello Richard,
    > Thank you very much for your reply.
    > On Thu, Dec 22, 2011 at 10:12 PM, richard -rw- weinberger
    > <> wrote:
    >> On Thu, Dec 22, 2011 at 5:07 PM, Gaurav Saxena <> wrote:
    >>> Hello all,
    >>> I am writing an application for which I need to intercept some
    >>> filesystem system calls eg. unlink. I need unlink to call my code
    >>> before deleting abc so that I could probably prevent unlink . I would
    >>> like to implement this in a kernel module instead of modifying kernel
    >>> code itself. I would like to intercept system calls by replacing
    >>> system calls but I have not been able to find any method of doing that
    >>> in linux > 3.0. Please suggest some method of doing that.
    >> Intercepting system calls is very bad, don't do it.
    > Oh. I will not do it then, could you suggest me something so that I
    > could prevent unlink on some file say using kernel support. I want to
    > save file on unlink how could I do that without kernel support, or how
    > could I do that using a kernel module.

    It depends on your application.
    Samba has vfs_recycle.
    You can also write a fuse-filesystem.
    Or use ptrace().

    Select your pain. ;)


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      Last update: 2011-12-22 18:09    [W:0.021 / U:91.700 seconds]
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