Subject: [netatalk-admins] Re: Bug#36140: Acknowledgement (Cannot keep files in the Mac trash)
From: Francesco Potorti` (F.Potorti@cnuce.cnr.it)
Date: Thu Apr 22 1999 - 05:52:37 EDT
I had the problem of not being able to put things in a netatalk folder. I
solved it by simply deleting the Network trash Folder directory and its
contents. I really renamed it, and this is a try to an explanation of the
problem, with the help of those who were so kind to answer. What I say
will be necessarily incomplete or partially wrong, as I don't know enough
of how the Network trash Folder and its ownerships/permissions are managed
by netatalk.
I have a setup where there is only one user, called cng, so everyone mounts
the voulume as user cng, and everything is visible by anyone. This is the
trash after the only one user has just mounted the volume (status 1):
/home/cng/data/Network Trash Folder:
total 12
drwx--Srwx 3 cng share 4096 Apr 22 11:07 .
drwxrwsr-x 10 cng share 4096 Apr 22 11:08 ..
drwx--Srwx 2 cng share 4096 Apr 21 20:12 .AppleDouble
-rw----rw- 1 cng share 0 Apr 21 20:12 Trash Can Usage Map
and this is after a file has been deleted, put in the trash and removed
from the trash, so an empty trash folder again (status 2):
/home/cng/data/Network Trash Folder:
total 16
drwx--Srwx 4 cng share 4096 Apr 22 11:26 .
drwxrwsr-x 10 cng share 4096 Apr 22 11:26 ..
drwx--Srwx 2 cng share 4096 Apr 21 20:12 .AppleDouble
drwx--S--- 3 cng share 4096 Apr 22 11:26 Trash Can #2
-rw----rw- 1 cng share 0 Apr 21 20:12 Trash Can Usage Map
when the volume is unmounted, the users are asked if they really want to
unmount the volume, and emty the trash. If the say so, the trash goes back
to the status 1.
My interpretation of these facts is that a numbered trash (#2 in this case)
is created every time a user puts something in the trash. Even if two
people (but same user) use the trash, only one numbered trash folder is
created, and it is emptied as soon as one person unmounts the volume. More
precisely, if person A (user cng) puts something in the folder, then person
B (same user) does the same, then user A umount the volume and answers yes
to emptying the trash, a message appears saying "some items could not be
deleted, do you want to put away them and umount the volume?". If you
answer yes, the items are apparently deleted, and the trash goes back to
status 1. I suppose that the numbered trash are used, as someone
suggested, when many users are present in the system. What is the reason
why netatalk starts from #2 instead of #1 (or #0) I have no idea.
Now, my old and broken trash folder, which did not allow anyone to put
things in the trash, was done like this (status 0):
/home/cng/data/Old and broken Trash:
total 72
drwx--Srwx 17 cng share 4096 Apr 22 11:42 .
drwxrwsr-x 10 cng share 4096 Apr 22 11:35 ..
drwx--S--- 3 cng share 4096 Apr 6 13:05 Trash Can #15
drwx--S--- 4 cng share 4096 Mar 31 13:17 Trash Can #14
-rw-r--r-- 1 root share 1707 Mar 30 19:58 afpd.conf
drwx--S--- 4 cng share 4096 Mar 22 15:10 Trash Can #13
drwx--S--- 3 cng share 4096 Feb 23 16:31 Trash Can #12
drwx--S--- 3 cng share 4096 Feb 18 13:37 Trash Can #11
drwx--S--- 3 cng share 4096 Feb 9 17:18 Trash Can #10
drwx--S--- 4 cng share 4096 Feb 8 13:47 Trash Can #9
drwx--S--- 3 cng share 4096 Jan 22 17:05 Trash Can #8
drwx--S--- 3 cng share 4096 Jan 15 12:36 Trash Can #7
drwx--S--- 3 cng share 4096 Jan 14 16:23 Trash Can #6
drwx--S--- 3 cng share 4096 Jan 12 17:56 Trash Can #5
drwx--S--- 4 cng share 4096 Dec 14 14:27 Trash Can #4
drwx--S--- 3 cng share 4096 Apr 30 1998 Trash Can #3
drwx--S--- 3 cng share 4096 Apr 1 1998 Trash Can #2
drwx--Srwx 2 cng share 4096 Jan 30 1998 .AppleDouble
-rw----rw- 1 cng share 0 Jan 30 1998 Trash Can Usage Map
As you see, there are many numbered trashes, all belonging to the same
user.
My interpretation of the facts is that a numbered trash remains there,
undeleted, if the Mac crashes without unmounting the volume, or if I shut
down netatalk while poeple have the volume mounted. The next time a
numbered trash is needed, a new one is created. The maximum number is #15,
so after that netatalk refuses to build another numbered trash, and you
cannot delete files.
Sorry for the length of this message. Comments welcome. I do not follow
the list, so please CC answers to me.
Note to the debian maintainer: I suppose this rules out any bug in debian
or netatalk. If you agree, the bug should be closed.
-- Francesco Potort́ (researcher) Voice: +39-050-593 203 (op. 211) Computer Networks Group Fax: +39-050-904052 CNUCE-CNR, Via Santa Maria 36 Email: F.Potorti@cnuce.cnr.it 56126 Pisa - Italy Web: http://fly.cnuce.cnr.it/
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