** Description changed:
[Impact]
- aptdaemon needs to implement frontend locking to avoid it stumbling over
clients that do implement it. We also change the locking order to lock in APT
order, and the unlock order becomes the reverse of that so that the behavior is
sane wrt other clients.
+ aptdaemon needs to implement frontend locking to avoid it hijacking dpkg
status lock from clients that do implement frontend locking; and in order to be
protected from apt clients that acquire the status lock (which they won't do if
aptdaemon holds the frontend lock).
+
+ This also change the locking order to lock in APT order, and the unlock
+ order becomes the reverse of that so that the behavior is sane wrt other
+ clients, as it was somewhat broken.
[Test case]
- N/A
+ Lock /var/lib/dpkg/lock-frontend and then try do so something with aptdaemon,
it should not be possible until you release lock-frontend.
[Regression potential]
There may be other race conditions appearing now due to the order of
(un)locking changing.
** Also affects: aptdaemon (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: aptdaemon (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: aptdaemon (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: aptdaemon (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: aptdaemon (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: aptdaemon (Ubuntu Xenial)
Status: New => In Progress
** Changed in: aptdaemon (Ubuntu Xenial)
Status: In Progress => Triaged
** Changed in: aptdaemon (Ubuntu Bionic)
Status: New => Triaged
** Changed in: aptdaemon (Ubuntu Cosmic)
Status: New => Triaged
** Changed in: aptdaemon (Ubuntu Disco)
Status: New => Triaged
** Changed in: aptdaemon (Ubuntu Eoan)
Status: New => In Progress
** Changed in: aptdaemon (Ubuntu Eoan)
Importance: Undecided => High
** Changed in: aptdaemon (Ubuntu Disco)
Importance: Undecided => High
** Changed in: aptdaemon (Ubuntu Cosmic)
Importance: Undecided => High
** Changed in: aptdaemon (Ubuntu Bionic)
Importance: Undecided => Critical
** Changed in: aptdaemon (Ubuntu Bionic)
Importance: Critical => High
** Changed in: aptdaemon (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: aptdaemon (Ubuntu Xenial)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: aptdaemon (Ubuntu Bionic)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: aptdaemon (Ubuntu Cosmic)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: aptdaemon (Ubuntu Disco)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: aptdaemon (Ubuntu Eoan)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: aptdaemon (Ubuntu Eoan)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1831981
Title:
aptdaemon frontend locking, locking fixes
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