Bug#950788: /usr/share/man/man5/sysctl.d.5.gz: sysctl.d.5 man page has confusing directory order
Hi Michael, I had a look at the systemd source code. My aim is to make sure the procps sysctl and the systemd sysctl behave the same way. The first problem is we have a different order of things (/etc vs /run) so I looked at the manual page first. It looks like a lot of systemd programs have a standard set of directories they check[1] which is different from what sysctl uses[2]. However, the manual page implies there are two groups of directories and some override others. From what I can see from the configuration file handling of systemd[3] there is no "special" set and it is a matter of what directory comes first. In other words, /usr/local/lib overrides /usr/lib (or /lib depending) but the manual page doesn't say that. I must admit I'm not too familiar with the systemd code, but that's how I read it. If that's the case, then I think there are three problems here: * The systemd sysctl.d.6 man page is incorrect and really each previous directory can override any directory after it (this bug #950788) * procps sysctl config files shipped by Debian should be in /usr/lib (procps bug #915797) * procps sysctl should swap the order of /etc and /run so /etc comes first and overrides things in /run like systemd sysctl does. Does that seem right to you? I'll make the necessary changes in procps if so. - Craig 1: https://salsa.debian.org/systemd-team/systemd/blob/debian/master/src/basic/def.h#L44 2: https://salsa.debian.org/debian/procps/blob/master/sysctl.c#L624 3: https://salsa.debian.org/systemd-team/systemd/blob/debian/master/src/basic/conf-files.c#L23 On Thu, 6 Feb 2020 at 23:15, Michael Biebl wrote: > Hi Craig > > Am 06.02.20 um 12:31 schrieb Craig Small: > > Package: systemd > > Version: 244-3 > > Severity: minor > > File: /usr/share/man/man5/sysctl.d.5.gz > > > > The sysctl.d.5 man page says this: > > > > Configuration files are read from directories in /etc/, /run/, > /usr/local/lib/, and /lib/, in order of precedence. Each configuration file > in these configuration directories shall be named in the > > style of filename.conf. Files in /etc/ override files with the > same name in /run/, /usr/local/lib/, and /lib/. Files in /run/ override > files with the same name under /usr/. > > > > OK, so we have 4 directories. > > Anything in /etc overrides anything in the other 3. > > > > But files in /run? They override.. /usr? > > Is this supposed to mean /usr/local/lib? > > Does that mean /run does NOT override files in /lib ? > > > > I think the man page used to say /usr/local/lib and /usr/lib and it was > > (badly) saying both directories under /usr > > > > Maybe.. I'm not really sure what way to interpret this. > > I suppose this is a result of > > https://salsa.debian.org/systemd-team/systemd/blob/debian/master/debian/rules#L200 > doing some incorrect replacements. > > Replace /lib with /usr/lib and it will make more sense, I guess. > > I guess we have to fine-tune the sed expression. > > > >
Bug#950788: /usr/share/man/man5/sysctl.d.5.gz: sysctl.d.5 man page has confusing directory order
Hi Craig Am 06.02.20 um 12:31 schrieb Craig Small: > Package: systemd > Version: 244-3 > Severity: minor > File: /usr/share/man/man5/sysctl.d.5.gz > > The sysctl.d.5 man page says this: > > Configuration files are read from directories in /etc/, /run/, > /usr/local/lib/, and /lib/, in order of precedence. Each configuration file > in these configuration directories shall be named in the > style of filename.conf. Files in /etc/ override files with the same > name in /run/, /usr/local/lib/, and /lib/. Files in /run/ override files with > the same name under /usr/. > > OK, so we have 4 directories. > Anything in /etc overrides anything in the other 3. > > But files in /run? They override.. /usr? > Is this supposed to mean /usr/local/lib? > Does that mean /run does NOT override files in /lib ? > > I think the man page used to say /usr/local/lib and /usr/lib and it was > (badly) saying both directories under /usr > > Maybe.. I'm not really sure what way to interpret this. I suppose this is a result of https://salsa.debian.org/systemd-team/systemd/blob/debian/master/debian/rules#L200 doing some incorrect replacements. Replace /lib with /usr/lib and it will make more sense, I guess. I guess we have to fine-tune the sed expression. signature.asc Description: OpenPGP digital signature
Bug#950788: /usr/share/man/man5/sysctl.d.5.gz: sysctl.d.5 man page has confusing directory order
Package: systemd Version: 244-3 Severity: minor File: /usr/share/man/man5/sysctl.d.5.gz The sysctl.d.5 man page says this: Configuration files are read from directories in /etc/, /run/, /usr/local/lib/, and /lib/, in order of precedence. Each configuration file in these configuration directories shall be named in the style of filename.conf. Files in /etc/ override files with the same name in /run/, /usr/local/lib/, and /lib/. Files in /run/ override files with the same name under /usr/. OK, so we have 4 directories. Anything in /etc overrides anything in the other 3. But files in /run? They override.. /usr? Is this supposed to mean /usr/local/lib? Does that mean /run does NOT override files in /lib ? I think the man page used to say /usr/local/lib and /usr/lib and it was (badly) saying both directories under /usr Maybe.. I'm not really sure what way to interpret this. - Craig -- Package-specific info: -- System Information: Debian Release: bullseye/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.3.0-3-amd64 (SMP w/8 CPU cores) Kernel taint flags: TAINT_WARN Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages systemd depends on: ii adduser 3.118 ii libacl1 2.2.53-5 ii libapparmor1 2.13.3-7 ii libaudit11:2.8.5-2+b1 ii libblkid12.34-0.1 ii libc62.29-6 ii libcap2 1:2.27-1 ii libcryptsetup12 2:2.2.2-1 ii libgcrypt20 1.8.5-3 ii libgnutls30 3.6.11.1-2 ii libgpg-error01.36-7 ii libidn2-02.2.0-2 ii libip4tc21.8.4-1 ii libkmod2 26-3 ii liblz4-1 1.9.2-2 ii liblzma5 5.2.4-1+b1 ii libmount12.34-0.1 ii libpam0g 1.3.1-5 ii libpcre2-8-0 10.34-7 ii libseccomp2 2.4.2-2 ii libselinux1 3.0-1 ii libsystemd0 244-3 ii mount2.34-0.1 ii util-linux 2.34-0.1 Versions of packages systemd recommends: ii dbus 1.12.16-2 Versions of packages systemd suggests: ii policykit-10.105-26 pn systemd-container Versions of packages systemd is related to: pn dracut ii initramfs-tools 0.135 ii udev 244-3 -- Configuration Files: /etc/systemd/logind.conf changed [not included] -- no debconf information
