From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org Subject: [Bug 59281] unshare(2) applies to threads, not processes Date: Tue, 05 May 2015 07:36:34 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=59281 Michael Kerrisk changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Resolution|--- |CODE_FIX --- Comment #2 from Michael Kerrisk --- (In reply to Florian Weimer from comment #0) > My version starts with "unshare() allows a process to disassociate parts of > its execution context", but I've been told that this incorrect because it > applies to the calling thread only, not the entire process. Florian, while I understand the motivation of this bug report, there's no really good fix. As Stuart notes, the line between thread and process in this context is fuzzy. Really, the reader needs to have a grasp on what clone(2) does. Anyway, to improve things a little, I applied the patch below. Cheers, Michael --- a/man2/unshare.2 +++ b/man2/unshare.2 @@ -49,15 +49,15 @@ _BSD_SOURCE || _SVID_SOURCE .ad b .SH DESCRIPTION .BR unshare () -allows a process to disassociate parts of its execution -context that are currently being shared with other processes. +allows a process (or thread) to disassociate parts of its execution +context that are currently being shared with other processesi or theads). Part of the execution context, such as the mount namespace, is shared implicitly when a new process is created using .BR fork (2) or .BR vfork (2), while other parts, such as virtual memory, may be -shared by explicit request when creating a process using +shared by explicit request when creating a process or thread using .BR clone (2). The main use of -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html