eCryptfs

stat mtime on encrypted fs doesn't match between calls

Bug #613873 reported by Guillermo Gonzalez on 2010-08-05

This bug affects 3 people

Affects		Status	Importance	Assigned to	Milestone
	eCryptfs	Fix Released	Medium	Tyler Hicks

Bug Description

steps to reproduce:

guillermo@naug:~/Private$ date > bar
guillermo@naug:~/Private$ stat bar
  File: `bar'
  Size: 29 Blocks: 24 IO Block: 4096 regular file
Device: 15h/21d Inode: 1846747 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/guillermo) Gid: ( 1000/guillermo)
Access: 2010-08-05 11:14:40.896464546 -0300
Modify: 2010-08-05 11:14:40.000000000 -0300
Change: 2010-08-05 11:14:40.000000000 -0300
guillermo@naug:~/Private$ chmod 0666 bar
guillermo@naug:~/Private$ stat bar
  File: `bar'
  Size: 29 Blocks: 24 IO Block: 4096 regular file
Device: 15h/21d Inode: 1846747 Links: 1
Access: (0666/-rw-rw-rw-) Uid: ( 1000/guillermo) Gid: ( 1000/guillermo)
Access: 2010-08-05 11:14:40.896464546 -0300
Modify: 2010-08-05 11:14:40.900454307 -0300
Change: 2010-08-05 11:14:47.672508525 -0300
guillermo@naug:~/Private$

Tags:

Revision history for this message

Tyler Hicks (tyhicks) wrote on 2010-08-05:

Verified on 2.6.35

Changed in ecryptfs:
assignee:	nobody → Tyler Hicks (tyhicks)
importance:	Undecided → Medium
status:	New → Confirmed

Revision history for this message

Guillermo Gonzalez (verterok) wrote on 2010-08-05:

This is on Ubuntu 10.04, kernel 2.6.32-24-generic and ext4 filesystem

Revision history for this message

Tyler Hicks (tyhicks) wrote on 2010-08-05:

Looks to be specific to ext4's nanosecond timestamp feature.

Revision history for this message

Tyler Hicks (tyhicks) wrote on 2011-02-18:

Pushed a fix for this to git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6.git#next, marked it Cc: stable, and plan on getting it into 2.6.38-rc6.