Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 869872 - net-dns/dnscrypt-proxy-2.1.1: logrotate fails due to permission problems in combination with systemd service
Summary: net-dns/dnscrypt-proxy-2.1.1: logrotate fails due to permission problems in c...
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Sam James
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-09-12 14:34 UTC by Anders Larsson
Modified: 2022-09-12 15:36 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Anders Larsson 2022-09-12 14:34:06 UTC
logrotate.service is unable to run successfully due to permission error on log directory.

This seems to due to a combination of configuration in the systemd service and the installed logrotate configuration file for dnscrypt-proxy.

systemd unit contains:
DynamicUser=yes

This moves log files from /var/log/dnscrypt-proxy to /var/log/private/dnscrypt-proxy and /var/log/dnscrypt-proxy is made into a symlink.

# ls -ld /var/log/private/ /var/log/private/dnscrypt-proxy/ /var/log/dnscrypt-proxy
lrwxrwxrwx. 1 root           root             22 Sep 12 15:52 /var/log/dnscrypt-proxy -> private/dnscrypt-proxy
drwx------. 3 root           root           4096 Sep 12 15:52 /var/log/private/
drwxr-xr-x. 2 dnscrypt-proxy dnscrypt-proxy 4096 Sep 12 15:50 /var/log/private/dnscrypt-proxy/

From dnscrypt-proxy.service logs after changing it:
...
systemd[31996]: Found pre-existing public LogsDirectory= directory /var/log/dnscrypt-proxy, migrating to /var/log/private/dnscrypt-proxy.
systemd[31996]: Apparently, service previously had DynamicUser= turned off, and has now turned it on.
...

Logrotate seems to fail because in /etc/logrotate.d/dnscrypt-proxy the following is set:
...
su dnscrypt-proxy dnscrypt-proxy
...

When user dnscrypt-proxy tries to access /var/log/dnscrypt-proxy it attempts to traverse /var/log/private to reach /var/log/private/dnscrypt-proxy which causes permission denied. See actual results for error.


Reproducible: Always

Steps to Reproduce:
1. USE="-cron" emerge app-admin/logrotate
2. emerge net-dns/dnscrypt-proxy
3. systemctl start net-dns/dnscrypt-proxy
4. systemctl start logrotate.service
Actual Results:  
logrotate[32017]: error: stat of /var/log/dnscrypt-proxy/*.log failed: Permission denied
systemd[1]: logrotate.service: Main process exited, code=exited, status=1/FAILURE

Expected Results:  
logrotate.service can start without any errors

Portage 3.0.30 (python 3.10.6-final-0, default/linux/amd64/17.1/no-multilib/systemd/selinux, gcc-11.3.0, glibc-2.35-r8, 5.15.59-gentoo x86_64)                                                                                                                                                                                                                                        [2/4383]
=================================================================
System uname: Linux-5.15.59-gentoo-x86_64-Intel_Xeon_Processor_-Skylake,_IBRS-with-glibc2.35
KiB Mem:     3939556 total,    494388 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Thu, 08 Sep 2022 07:00:01 +0000
Head commit of repository gentoo: 017284f3fcec165e5b6d9db6ffc2b4f4b4ebd12f
sh bash 5.1_p16-r1
ld GNU ld (Gentoo 2.38 p4) 2.38
app-misc/pax-utils:        1.3.5::gentoo
app-shells/bash:           5.1_p16-r1::gentoo
dev-lang/perl:             5.34.1-r3::gentoo
dev-lang/python:           3.10.6_p2::gentoo
dev-util/cmake:            3.23.3::gentoo
dev-util/meson:            0.62.2::gentoo
sec-policy/selinux-base:   2.20220520-r1::gentoo
sys-apps/baselayout:       2.8::gentoo
sys-apps/sandbox:          2.29::gentoo
sys-apps/systemd:          251.3::gentoo
sys-devel/autoconf:        2.71-r1::gentoo
sys-devel/automake:        1.16.5::gentoo
sys-devel/binutils:        2.38-r2::gentoo
sys-devel/binutils-config: 5.4.1::gentoo
sys-devel/gcc:             11.3.0::gentoo
sys-devel/gcc-config:      2.5-r1::gentoo
sys-devel/libtool:         2.4.7::gentoo
sys-devel/make:            4.3::gentoo
sys-kernel/linux-headers:  5.15-r3::gentoo (virtual/os-headers)
sys-libs/glibc:            2.35-r8::gentoo
sys-libs/libselinux:       3.4::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-verify-metamanifest: yes
    sync-rsync-extra-opts:
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-jobs: 1

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/bind"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=native -O2 -pipe"
DISTDIR="/var/cache/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps=y --complete-graph y --jobs=5 --load-average=1"
ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-march=native -O2 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch preserve-libs protect-owned qa-unresolved-soname-deps sandbox selinux sesandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-march=native -O2 -pipe"
GENTOO_MIRRORS="https://packages.hetzner.com/gentoo"
LANG="en_GB.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j2"
PKGDIR="/var/cache/binpkgs"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 -exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
SHELL="/bin/bash"
USE="acl amd64 audit bzip2 caps cli crypt dri fortran gdbm iconv ipv6 libglvnd libtirpc ncurses nls nptl offensive openmp pam pcre peer_perms readline seccomp selinux split-usr ssl systemd ubac udev unconfined unicode vim-syntax xattr zlib zsh-completion" ABI_X86="64" ADA_TARGET="gnat_2020" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 avx512f avx512dq avx512cd avx512bw avx512vl f16c fma3 mmx mmxext pclmul popcnt rdrand sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_10" PYTHON_TARGETS="python3_10" RUBY_TARGETS="ruby27" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit
 sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LEX, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUS
TFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
Comment 1 Anders Larsson 2022-09-12 14:41:03 UTC
Correction for section "Steps to reproduce"
3. systemctl start dnscrypt-proxy.service