When the stub listener is disabled, stub-resolv.conf is useless. Instead of
warning about this, let's just make stub-resolv.conf point to the private
resolv.conf file. (The original bug report asked for "mirroring", but I think
a symlink is nicer than a copy because it is easier to see that a redirection
was made.)
Fixes#14700.
All callers ignore the return value.
This is almost entirely theoretical, since writing to /run is unlikely to
fail..., but the user is almost certainly better off keeping the old copy
around and having working dns resolution with an out-of-date dns server list
than having having a dangling /etc/resolv.conf symlink.
An error with a full path is immediately clear. OTOH, a user might not be
familiar with concenpt like "private resolv.conf".
I opted to use %s-formatting for the path, because the code is much easier to
read this way. Any difference in t speed of execution is not important.
This is useful to raise the log level for a single transaction or a few,
without affecting other state of the resolved as a restart would.
The log level can only be set, I didn't bother with having the ability
to restore the original as in pid1.
Add manpages.debian.org as a man citeref "project", so we can refer to man
pages hosted there. resolvconf(8) doesn't seem to appear on any of the ones we
currently have defined.
We are doing a trick, where our man page is installed as resolvconf(1), and
we refer the reader to resolvconf(8). This can be pretty confusing, so the
least we can do is to provide a non-broken symlink ;)
v2:
- link to manpages.d.o instead of manpages.ubuntu.com, because debian is the
upstream here, and because with debian we can use /unstable/ as the version,
and ubuntu doesn't seem to have any such shortcut, so the version would need
to be periodically updated.
When someone knows how the whole ecosystem works, this is understandable.
But for someone coming from a system where resolvconf updates /etc/resolv.conf
directly, this can be rather surprising.
For https://bugzilla.redhat.com/show_bug.cgi?id=1815605.
Hiding the first column, which may contain bullet circles, with --no-legend
is undocumented and potentially unexpected. On the other hand, not printing
bullet circles with --plain is documented so hiding the column with that
switch is sensible.
The combination "--full --no-legend --no-pager --plain" is appropriate for
automated processing of systemctl output.
ebf963c551 changed the 'sep' argument to always
be either " " or "\n", which broke the indentation logic for the first line
in base64_append_width(). Since it now always is one character, and never NULL,
let's change the type to char and simplify the logic a bit.
$ COLUMNS=30 build/test-dns-packet test/test-resolve/org~20200417.pkts
============== test/test-resolve/org~20200417.pkts ==============
org IN DNSKEY 256 3 RSASHA1-NSEC3-SHA1
AwEAAcLPVEcg0hFBheXQf
QOqqLiRgckk69o2KTAsq3
lNRY0c9mnEjzZDGsGmXNy
2EQ6yelkIYYus7KLor2Fz
x59hEqcM82zqkdHV6hXvZ
yjxxSHG3nl8xQS6gF8mdI
YouDTWWhTInfjSKoIeDok
Hq3S67EjSngV7/wVCMTbI
amS0NF4H
-- Flags: ZONE_KEY
-- Key tag: 37022
...
$ COLUMNS=120 build/test-dns-packet test/test-resolve/org~20200417.pkts
============== test/test-resolve/org~20200417.pkts ==============
org IN DNSKEY 256 3 RSASHA1-NSEC3-SHA1 AwEAAcLPVEcg0hFBheXQfQOqqLiRgckk69o2KTAsq3lNRY0c9mnEjzZDGsGmXNy2EQ6yelkIYYus7KLor
2Fzx59hEqcM82zqkdHV6hXvZyjxxSHG3nl8xQS6gF8mdIYouDTWWhTInfjSKoIeDokHq3S67EjSngV7/w
VCMTbIamS0NF4H
-- Flags: ZONE_KEY
-- Key tag: 37022
...
Let's append the date to the domain in the file name, to be able
to have multiple versions for the same domain.
There is no particular rhyme or reason to the domains being used:
I just pulled a few domains that happened to be present in issues reported
on github, even though the issues were not about pretty printing.
