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[Bug 1247769] Re: kernel headers do not define OVERLAYFS_SUPER_MAGIC

 

Hi Joseph,

Due to the headaches introduced by bug 882147 (which effectively
guarantees that tests will fail erroneously), we are changing the
Upstart tests to detect a /tmp overlayfs filesystem and display a
warning. One approach is to make use of OVERLAYFS_SUPER_MAGIC to check
/tmp. See below for the discussion:

https://code.launchpad.net/~jamesodhunt/upstart/check-for-
overlayfs/+merge/191393

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https://bugs.launchpad.net/bugs/1247769

Title:
  kernel headers do not define OVERLAYFS_SUPER_MAGIC

Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Precise:
  In Progress
Status in “linux” source package in Quantal:
  In Progress
Status in “linux” source package in Raring:
  In Progress
Status in “linux” source package in Saucy:
  In Progress
Status in “linux” source package in Trusty:
  In Progress

Bug description:
  Include file /usr/include/linux/magic.h is missing the following:

  #define OVERLAYFS_SUPER_MAGIC 0x794c764f

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References