Bug#1037917: gnutls28: leaves processes running after build: gnutls-serv, openssl s_server

[Andreas Metzler]

On 2023-06-14 Andreas Metzler <ametzler at bebt.de> wrote:
> On 2023-06-14 Andreas Beckmann <anbe at debian.org> wrote:
[...]
> > after building gnutls28/experimental with pbuilder, there are a lot of
> > gnutls-serv and a few openssl s_server processes running, preventing
> > pbuilder to cleanup the chroot.

> This was caused by the changes related to fixing #1031553 (supporting
> either datefudge or faketime.

The reasons for breakage are twofold:

when using a wrapper shell-function instead of an executable like this:

wrapme() {
        foo "$@"
}

This kind of code breaks

wrapme server &
PID=$!
...
kill $PID

since PID will contain the process ID of the currently running script
instead of "foo server".

The second one is a similar one. While
datefudge ... server
gives you one process - the server one (datefudge is a shell script
which sets some environment variables and exec-s the a binary.) OTOH
faketime  ... server
starts a faketime process and a forked "server" as child process and
killing faketime does not kill the child process (Reported as
https://github.com/wolfcw/libfaketime/issues/428 ). This also breaks the
idiom mentioned above.

cu Andreas
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