[Bug 1413978] Re: rename updates ctime. The glibc manual says otherwise.

[Jorge Morais]

** Attachment added: "Small program that detects ctime change after rename"
   https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1413978/+attachment/4304322/+files/rename_updates_mtime.c

** Description changed:

  glibc manual (both in the glibc included with Ubuntu 14.10 and also in
- upstream glibc from git at 2014-01-23 ) at 14.9.9 File Times says:
+ upstream glibc from git on 2014-01-23) at 14.9.9 File Times says:
  
  "Renaming a file with 'rename' affects only the attribute change time
  and modification time fields of the two parent directories involved, and
  not the times for the file being renamed."
  
  But in practice (tested on Ubuntu 14.10) renaming a file does change its
  ctime.  I have checked it both at the command line and also with the
- small program I will attach.
+ small program attached.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: libc6 2.19-10ubuntu2.2
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Jan 23 10:24:24 2015
  Dependencies:
-  gcc-4.9-base 4.9.1-16ubuntu6
-  libc6 2.19-10ubuntu2.2
-  libgcc1 1:4.9.1-16ubuntu6
-  multiarch-support 2.19-10ubuntu2.2
+  gcc-4.9-base 4.9.1-16ubuntu6
+  libc6 2.19-10ubuntu2.2
+  libgcc1 1:4.9.1-16ubuntu6
+  multiarch-support 2.19-10ubuntu2.2
  InstallationDate: Installed on 2014-10-23 (91 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: glibc
  UpgradeStatus: Upgraded to utopic on 2015-01-15 (7 days ago)

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https://bugs.launchpad.net/bugs/1413978

Title:
  rename updates ctime.  The glibc manual says otherwise.

Status in glibc package in Ubuntu:
  New

Bug description:
  glibc manual (both in the glibc included with Ubuntu 14.10 and also in
  upstream glibc from git on 2014-01-23) at 14.9.9 File Times says:

  "Renaming a file with 'rename' affects only the attribute change time
  and modification time fields of the two parent directories involved,
  and not the times for the file being renamed."

  But in practice (tested on Ubuntu 14.10) renaming a file does change
  its ctime.  I have checked it both at the command line and also with
  the small program attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: libc6 2.19-10ubuntu2.2
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Jan 23 10:24:24 2015
  Dependencies:
   gcc-4.9-base 4.9.1-16ubuntu6
   libc6 2.19-10ubuntu2.2
   libgcc1 1:4.9.1-16ubuntu6
   multiarch-support 2.19-10ubuntu2.2
  InstallationDate: Installed on 2014-10-23 (91 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: glibc
  UpgradeStatus: Upgraded to utopic on 2015-01-15 (7 days ago)

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