[Bug 1396907] Re: Uncondicionally exchanging short filenames breaks userspace
Debian reference: https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=763831 (did not use also-affects because that had weird effects last time I did that to another report). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396907 Title: Uncondicionally exchanging short filenames breaks userspace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1396907] Re: Uncondicionally exchanging short filenames breaks userspace
It looks to make sense to follow Debian and also pick the following patch as it moves the following swap into switch_names at a position which will not be executed in the !exchange case: * fold swapping -d_name.hash into switch_names() -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396907 Title: Uncondicionally exchanging short filenames breaks userspace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1396907] Re: Uncondicionally exchanging short filenames breaks userspace
** Changed in: linux (Ubuntu) Status: Incomplete = Triaged ** Changed in: linux (Ubuntu Utopic) Status: Incomplete = Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396907 Title: Uncondicionally exchanging short filenames breaks userspace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1396907] Re: Uncondicionally exchanging short filenames breaks userspace
** Tags added: kernel-bug-break-fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396907 Title: Uncondicionally exchanging short filenames breaks userspace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1396907] Re: Uncondicionally exchanging short filenames breaks userspace
** Description changed: SRU Justification: Impact: Since v3.15 the link of /proc/pid/exe will unconditionally be renamed to the previous name of a binary when the filename is short and the binary was running. For example foo is a daemon and running while dpkg installs a new version. dpkg will unpack as foo.dpkg-new first and then rename to foo. After that /proc/pid/exe of the running foo daemon will point to the (no non-existent) foo.dpkg-new. Which in turn causes start-stop-daemon if that is used post-install to fail finding the running instance. Fix: Backport of the following upstream change (which came with v3.17): - From d2fa4a8476b911782f7e5167db18770222ac40c3 Mon Sep 17 00:00:00 2001 - From: Mikhail Efremov s...@altlinux.org - Date: Wed, 24 Sep 2014 22:14:33 +0400 - Subject: [PATCH] vfs: Don't exchange short filenames unconditionally. + From d2fa4a8476b911782f7e5167db18770222ac40c3 Mon Sep 17 00:00:00 2001 + From: Mikhail Efremov s...@altlinux.org + Date: Wed, 24 Sep 2014 22:14:33 +0400 + Subject: [PATCH] vfs: Don't exchange short filenames unconditionally. - Only exchange source and destination filenames - if flags contain RENAME_EXCHANGE. - In case if executable file was running and replaced by - other file /proc/PID/exe should still show correct file name, - not the old name of the file by which it was replaced. + Only exchange source and destination filenames + if flags contain RENAME_EXCHANGE. + In case if executable file was running and replaced by + other file /proc/PID/exe should still show correct file name, + not the old name of the file by which it was replaced. Testcase: Any binary running that has a short (= DNAME_INLINE_LEN) filename), copy the current binary to oldname.new and then move oldname.new to oldname. Now /proc/pid/exe of the running process points to oldname.new wihtout the change but remains to be oldname with the patch. - break-fix: da1ce0670c14d8380e423a3239e562a1dc15fa9e d2fa4a8476b911782f7e5167db18770222ac40c3 + break-fix: da1ce0670c14d8380e423a3239e562a1dc15fa9e 3b01fb24b2a8cdfb49511046ad7d6463bdf0ed00 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396907 Title: Uncondicionally exchanging short filenames breaks userspace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
