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Re: [PATCH hurd 0/6] Add file record locking support

From: Samuel Thibault
Subject: Re: [PATCH hurd 0/6] Add file record locking support
Date: Tue, 20 Jan 2015 01:37:12 +0100
User-agent: Mutt/1.5.21+34 (58baf7c9f32f) (2010-12-30)


Thanks for reviving this, it'll definitely be useful!

Svante Signell, le Thu 08 Jan 2015 12:28:05 +0100, a écrit :
> 1) l_pid of struct flock is not set. According to the manpage (and
> posix) the PID of the process blocking the lock should be reported. Can
> maybe be solved by a shared memory solution in glibc or as indicated in
> task 1022.

We can not trust a shared memory solution, we need an io_reidentify
round through the proc server.

> 2) fork(2) does not create a process without the locks set for the
> child.

> (This is probably the main cause tdbtorture in tdb does not work well
> with the current file record locking patches.)

I don't think tdbtorture forks with locks held: AIUI it just starts
several processes and let them play at will with locks, without creating
or terminating them.


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