| From: | Christoph Moench-Tegeder <cmt(at)burggraben(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Anders Kaseorg <andersk(at)mit(dot)edu>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, alvherre(at)alvh(dot)no-ip(dot)org, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: [PATCH] Prefer getenv("HOME") to find the UNIX home directory |
| Date: | 2022-01-09 23:11:59 |
| Message-ID: | Ydtrv7YnD+ac+eQV@elch.exwg.net |
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| Lists: | pgsql-hackers |
## Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us):
> Isn't that a flat out violation of POSIX 8.3 Other Environment Variables?
>
> HOME
> The system shall initialize this variable at the time of login to
> be a pathname of the user's home directory. See <pwd.h>.
>
> To claim it's not, you have to claim these programs aren't logged in,
> in which case where did they get any privileges from?
After poking around across some Linuxes, it looks like people silently
agreed that "services" are not logged-in users: among the daemons,
having HOME set (as observed in /proc/*/environ) is an exception,
not the norm. I'm not sure if that's a "new" thing with systemd,
I don't have a linux with pure SysV-init available (but I guess those
are rare animals anyways).
Regards,
Christoph
--
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