Eric Lee / smarc-fsl-linux-kernel

14 Jul, 2005

1 commit

13 Jul, 2005

1 commit

  • 0eeca2830   [PATCH] inotify ... Browse Code »

    inotify is intended to correct the deficiencies of dnotify, particularly
    its inability to scale and its terrible user interface:

    * dnotify requires the opening of one fd per each directory
    that you intend to watch. This quickly results in too many
    open files and pins removable media, preventing unmount.
    * dnotify is directory-based. You only learn about changes to
    directories. Sure, a change to a file in a directory affects
    the directory, but you are then forced to keep a cache of
    stat structures.
    * dnotify's interface to user-space is awful. Signals?

    inotify provides a more usable, simple, powerful solution to file change
    notification:

    * inotify's interface is a system call that returns a fd, not SIGIO.
    You get a single fd, which is select()-able.
    * inotify has an event that says "the filesystem that the item
    you were watching is on was unmounted."
    * inotify can watch directories or files.

    Inotify is currently used by Beagle (a desktop search infrastructure),
    Gamin (a FAM replacement), and other projects.

    See Documentation/filesystems/inotify.txt.

    Signed-off-by: Robert Love
    Cc: John McCutchan
    Cc: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robert Love
     

26 Jun, 2005

1 commit

24 Jun, 2005

1 commit

  • d6e711448   [PATCH] setuid core dump ... Browse Code »

    Add a new `suid_dumpable' sysctl:

    This value can be used to query and set the core dump mode for setuid
    or otherwise protected/tainted binaries. The modes are

    0 - (default) - traditional behaviour. Any process which has changed
    privilege levels or is execute only will not be dumped

    1 - (debug) - all processes dump core when possible. The core dump is
    owned by the current user and no security is applied. This is intended
    for system debugging situations only. Ptrace is unchecked.

    2 - (suidsafe) - any binary which normally would not be dumped is dumped
    readable by root only. This allows the end user to remove such a dump but
    not access it directly. For security reasons core dumps in this mode will
    not overwrite one another or other files. This mode is appropriate when
    adminstrators are attempting to debug problems in a normal environment.

    (akpm:

    > > +EXPORT_SYMBOL(suid_dumpable);
    >
    > EXPORT_SYMBOL_GPL?

    No problem to me.

    > > if (current->euid == current->uid && current->egid == current->gid)
    > > current->mm->dumpable = 1;
    >
    > Should this be SUID_DUMP_USER?

    Actually the feedback I had from last time was that the SUID_ defines
    should go because its clearer to follow the numbers. They can go
    everywhere (and there are lots of places where dumpable is tested/used
    as a bool in untouched code)

    > Maybe this should be renamed to `dump_policy' or something. Doing that
    > would help us catch any code which isn't using the #defines, too.

    Fair comment. The patch was designed to be easy to maintain for Red Hat
    rather than for merging. Changing that field would create a gigantic
    diff because it is used all over the place.

    )

    Signed-off-by: Alan Cox
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     

01 May, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds