[Bug 1235169] Re: Fails to read files in /etc/network/interfaces.d/

[TJ]

** Description changed:

  0.7.44ubuntu3 on Saucy 13.10 amd64.
  
  On a multi-homed server with five ethernet interfaces we have 6
  'interfaces' files in '/etc/network/interfaces.d/' for 'lo' and 'eth0'
  through 'eth4'.
  
  ifup -a fails to include the contents of these files and consequently
  the interfaces are ignored.
  
- 
- "strace" reveals that when scanning the 'interfaces.d' directory ifupdown is using the "openat()" function which does an integral change-directory. It gets the list of files correctly and "closes()" the directory. It then does "open()" on each validly named file but gets  -ENOENT result because it forgets to prefix the file-name with the 'interfaces.d/' directory - so it is looking in '/etc/network/' rather than '/etc/network/interfaces.d/'.
+ "strace" reveals that when scanning the 'interfaces.d' directory
+ ifupdown is using the "openat()" function which does an integral change-
+ directory. It gets the list of files correctly and "closes()" the
+ directory. It then does "open()" on each validly named file but gets
+ -ENOENT result because it forgets to prefix the file-name with the
+ 'interfaces.d/' directory - so it is looking in the current working
+ directory rather than '/etc/network/interfaces.d/'.

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https://bugs.launchpad.net/bugs/1235169

Title:
  Fails to read files in /etc/network/interfaces.d/

Status in “ifupdown” package in Ubuntu:
  New

Bug description:
  0.7.44ubuntu3 on Saucy 13.10 amd64.

  On a multi-homed server with five ethernet interfaces we have 6
  'interfaces' files in '/etc/network/interfaces.d/' for 'lo' and 'eth0'
  through 'eth4'.

  ifup -a fails to include the contents of these files and consequently
  the interfaces are ignored.

  "strace" reveals that when scanning the 'interfaces.d' directory
  ifupdown is using the "openat()" function which does an integral
  change-directory. It gets the list of files correctly and "closes()"
  the directory. It then does "open()" on each validly named file but
  gets  -ENOENT result because it forgets to prefix the file-name with
  the 'interfaces.d/' directory - so it is looking in the current
  working directory rather than '/etc/network/interfaces.d/'.

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