Subject: Re: pwdb busy
To: None <firstname.lastname@example.org>
From: Perry E. Metzger <email@example.com>
Date: 06/24/1997 22:28:50
This proposal is more or less exactly what I would suggest.
Now if someone will only write it. :)
Missing - presumed fed. writes:
> Chris Jones sez:
> * 1) User runs chfn.
> Cool. A generic tmp file, not ptmp, is created.
> * 2) Sysadmin edits user's passwd info.
> Vipw. Creates /etc/ptmp.
> * 3) User finishes editing his info, and hits :wq.
> User gets "/etc/ptmp: Password file busy, try again later", OR
> it goes into a waiting game if the user wants it to.
> * 4) Now what? I guess chfn should take out a lock, and then verify
> * that its idea of the previous values matches what's currently in
> * passwd; otherwise, it errors out. But this could cause some confusion
> * on the part of the user...
> This is really getting absurd here (general comment; not to catch any
> one person).
> The ONLY program that should ever create ptmp as an active lock AND HOLD
> IT FOR ANY AMOUNT OF TIME should be vipw. Other programs which need
> ptmp should batch the input (i.e. wait until the user's done) and only
> create ptmp when the data is ready, i.e.
> 1. user edits data
> 2. user quits
> 3. chsh/chfn/passwd filters data from vi tmp file (NOT ptmp!)
> and mixes existing passwd data with requested change data.
> _THIS_ is what comprises ptmp for a very short period of time.
> 4. ptmp moves to master.passwd
> 5. old compat passwd file is derived from master.passwd
> 6. pwd_mkdb is run
> ...or am I missing something?