Messages in this thread | | | Date | Fri, 2 Feb 2024 07:36:21 -0800 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v4 7/9] rust: file: add `Kuid` wrapper |
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On Fri, Feb 02, 2024 at 10:55:41AM +0000, Alice Ryhl wrote: > + /// Returns the given task's pid in the current pid namespace. > + pub fn pid_in_current_ns(&self) -> Pid { > + let current = Task::current_raw(); > + // SAFETY: Calling `task_active_pid_ns` with the current task is always safe. > + let namespace = unsafe { bindings::task_active_pid_ns(current) }; > + // SAFETY: We know that `self.0.get()` is valid by the type invariant, and the namespace > + // pointer is not dangling since it points at this task's namespace. > + unsafe { bindings::task_tgid_nr_ns(self.0.get(), namespace) } > + }
pids are reference counted in the kernel, how does this deal with that? Are they just ignored somehow? Where is the reference count given back?
thanks,
greg k-h
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