7470cc4c73
https://tools.ietf.org/html/rfc1035#section-2.3.1 says (approximately) that only letters, numbers, and non-leading non-trailing dashes are allowed (for entries with A/AAAA records). We set no restrictions. hosts(5) says: > Host names may contain only alphanumeric characters, minus signs ("-"), and > periods ("."). They must begin with an alphabetic character and end with an > alphanumeric character. nss-files follows those rules, and will ignore names in /etc/hosts that do not follow this rule. Let's follow the documented rules for /etc/hosts. In particular, this makes us consitent with nss-files, reducing surprises for the user. I'm pretty sure we should apply stricter filtering to names received over DNS and LLMNR and MDNS, but it's a bigger project, because the rules differ depepending on which level the label appears (rules for top-level names are stricter), and this patch takes the minimalistic approach and only changes behaviour for /etc/hosts. Escape syntax is also disallowed in /etc/hosts, even if the resulting character would be allowed. Other tools that parse /etc/hosts do not support this, and there is no need to use it because no allowed characters benefit from escaping. |
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.github/ISSUE_TEMPLATE | ||
.lgtm/cpp-queries | ||
.mkosi | ||
catalog | ||
coccinelle | ||
docs | ||
factory/etc | ||
hwdb | ||
man | ||
modprobe.d | ||
network | ||
po | ||
presets | ||
rules | ||
shell-completion | ||
src | ||
sysctl.d | ||
sysusers.d | ||
test | ||
tmpfiles.d | ||
tools | ||
travis-ci | ||
units | ||
xorg | ||
.dir-locals.el | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
.lgtm.yml | ||
.mailmap | ||
.travis.yml | ||
.vimrc | ||
.ycm_extra_conf.py | ||
LICENSE.GPL2 | ||
LICENSE.LGPL2.1 | ||
Makefile | ||
NEWS | ||
README | ||
README.md | ||
TODO | ||
configure | ||
meson.build | ||
meson_options.txt | ||
mkosi.build | ||
mkosi.default | ||
zanata.xml |
README.md
systemd - System and Service Manager
Details
General information about systemd can be found in the systemd Wiki.
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