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This fixes a bug introduced by fe321d457c.
When we want to update a value (in the case of this commit, it is a hardware
address) which is used as a hashmap key, we need to do the following steps:
1. remove the old hashmap entry,
2. update the value,
3. create a new hashmap entry with the new value.
MANAGER_TEST_RUN_MINIMAL allows to skip setting up cgroups, which we don't
really want to do in systemd-analyze. MANAGER_TEST_RUN_BASIC doesn't
actually do anything by itself anyway.
Rather than checking if test_run_flags is set exclusively to MANAGER_TEST_RUN_MINIMAL,
check if it is set as a flag, so that it can be used together with other flags.
When mount points are stacked, bind_remount_recursive_with_mountinfo()
uses the existing mount options of the "lower" level mount (ie: the
first one that was mounted on a mount point). But the actual mount
point in use is the "top" one (ie: the last one that was mounted on a
mount point), so in practice if the mount options are different between
the layers, the bottom options are used by mistake on the top mount,
which is not what we want. This is because libmount returns the "bottom"
one first.
If the hashmap returns EEXIST, which means the same key (path) with different
value (options) is already present, update the hashmap instead of discarding
the result. This way, the last/top mount options are always used when
mounts are stacked on a mount point.
This was found to cause problems as LXC version 4.x stacks two /sys mounts,
the bottom one read-write and the top one read-only. systemd accidentally
remounts the top-one read-write, breaking various expectations since a
read-only /sys is the way we decide whether we are running in a container
or not (in this particular case, networkd tests are broken as networkd
expects to be able to modify network settings with a writable /sys).
Future versions of LXC will no longer do this double-stacking, but we
need to support running inside older versions too.
This was triggered by https://github.com/systemd/systemd/commit/6720e356c137
as that causes a recursive remount of '/', which processes '/sys' as one
of the submounts, from make_nosuid(). But it's likely that other combinations
of options could trigger this as well.
Before:
root@systemd-debug:/# systemd-run -t --wait --property ProtectSystem=yes findmnt
Running as unit: run-u9.service
Press ^] three times within 1s to disconnect TTY.
TARGET SOURCE FSTYPE OPTIONS
/ /dev/sda2[/var/lib/lxc/systemd-debug/rootfs]
│ ext4 ro,nosuid,relatime,errors=remount-ro,stripe=
├─/dev none tmpfs rw,nosuid,relatime,size=492k,mode=755
│ ├─/dev/.lxc/proc proc proc rw,nosuid,relatime
│ ├─/dev/.lxc/sys sys sysfs rw,nosuid,relatime
│ ├─/dev/console devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/pts devpts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/ptmx devpts[/ptmx] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/tty1 devpts[/0] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/tty2 devpts[/1] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/tty3 devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/tty4 devpts[/3] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptm
│ ├─/dev/shm tmpfs tmpfs rw,nosuid,nodev
│ ├─/dev/hugepages hugetlbfs hugetlbfs rw,nosuid,relatime,pagesize=2M
│ └─/dev/mqueue mqueue mqueue rw,nosuid,nodev,noexec,relatime
├─/proc proc proc rw,nosuid,nodev,noexec,relatime
│ ├─/proc/sys proc[/sys] proc ro,nosuid,nodev,noexec,relatime
│ │ ├─/proc/sys/net proc[/sys/net] proc rw,nosuid,nodev,noexec,relatime
│ │ └─/proc/sys/kernel/random/boot_id
│ │ none[/.lxc-boot-id] tmpfs ro,nosuid,nodev,noexec,relatime,size=492k,mo
│ └─/proc/sysrq-trigger proc[/sysrq-trigger] proc ro,nosuid,nodev,noexec,relatime
├─/sys sysfs sysfs rw,nosuid,nodev,noexec,relatime
│ └─/sys sysfs sysfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/devices/virtual/net sysfs sysfs rw,relatime
│ │ └─/sys/devices/virtual/net
│ │ sysfs[/devices/virtual/net] sysfs rw,nosuid,relatime
│ ├─/sys/fs/fuse/connections fusectl fusectl rw,nosuid,nodev,noexec,relatime
│ └─/sys/fs/cgroup cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate,m
├─/run tmpfs tmpfs ro,nosuid,nodev,size=4912348k,nr_inodes=8192
│ ├─/run/credentials tmpfs[/systemd/inaccessible/dir] tmpfs ro,nosuid,nodev,noexec,size=4912348k,nr_inod
│ └─/run/systemd/incoming tmpfs[/systemd/propagate/run-u9.service]
│ tmpfs ro,nosuid,nodev,size=4912348k,nr_inodes=8192
├─/tmp tmpfs tmpfs rw,nosuid,nodev,size=12280872k,nr_inodes=409
│ └─/tmp tmpfs[/systemd-private-b730df90da424397a3f246cb15dcdbb1-run-u9.service-K6EUwf/tmp]
│ tmpfs rw,nosuid,nodev,size=12280872k,nr_inodes=409
└─/var/tmp /dev/sda2[/var/lib/lxc/systemd-debug/rootfs/var/tmp/systemd-private-b730df90da424397a3f246cb15dcdbb1-run-u9.service-vEHyRi/tmp]
ext4 rw,nosuid,relatime,errors=remount-ro,stripe=
Finished with result: success
Main processes terminated with: code=exited/status=0
Service runtime: 14.249s
CPU time consumed: 37ms
After:
root@systemd-debug:/# systemd-run -t --wait --property ProtectSystem=yes findmnt
Running as unit: run-u3.service
Press ^] three times within 1s to disconnect TTY.
TARGET SOURCE FSTYPE OPTIONS
/ /dev/sda2[/var/lib/lxc/systemd-debug/rootfs]
│ ext4 rw,relatime,errors=remount-ro,stripe=32699
├─/dev none tmpfs rw,relatime,size=492k,mode=755
│ ├─/dev/.lxc/proc proc proc rw,relatime
│ ├─/dev/.lxc/sys sys sysfs rw,relatime
│ ├─/dev/console devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/pts devpts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/ptmx devpts[/ptmx] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/tty1 devpts[/0] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/tty2 devpts[/1] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/tty3 devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/tty4 devpts[/3] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode
│ ├─/dev/shm tmpfs tmpfs rw,nosuid,nodev
│ ├─/dev/hugepages hugetlbfs hugetlbfs rw,relatime,pagesize=2M
│ └─/dev/mqueue mqueue mqueue rw,nosuid,nodev,noexec,relatime
├─/proc proc proc rw,nosuid,nodev,noexec,relatime
│ ├─/proc/sys proc[/sys] proc ro,nosuid,nodev,noexec,relatime
│ │ ├─/proc/sys/net proc[/sys/net] proc rw,nosuid,nodev,noexec,relatime
│ │ └─/proc/sys/kernel/random/boot_id
│ │ none[/.lxc-boot-id] tmpfs ro,nosuid,nodev,noexec,relatime,size=492k,mode=75
│ └─/proc/sysrq-trigger proc[/sysrq-trigger] proc ro,nosuid,nodev,noexec,relatime
├─/sys sysfs sysfs rw,nosuid,nodev,noexec,relatime
│ └─/sys sysfs sysfs ro,nosuid,nodev,noexec,relatime
│ ├─/sys/devices/virtual/net sysfs sysfs rw,relatime
│ │ └─/sys/devices/virtual/net
│ │ sysfs[/devices/virtual/net] sysfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/fuse/connections fusectl fusectl rw,nosuid,nodev,noexec,relatime
│ └─/sys/fs/cgroup cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate,memory
├─/run tmpfs tmpfs rw,nosuid,nodev,size=4912348k,nr_inodes=819200,mo
│ ├─/run/credentials tmpfs[/systemd/inaccessible/dir]
│ │ tmpfs ro,nosuid,nodev,noexec,size=4912348k,nr_inodes=81
│ └─/run/systemd/incoming tmpfs[/systemd/propagate/run-u3.service]
│ tmpfs ro,nosuid,nodev,size=4912348k,nr_inodes=819200,mo
├─/tmp tmpfs tmpfs rw,nosuid,nodev,size=12280872k,nr_inodes=409600
├─/boot /dev/sda2[/var/lib/lxc/systemd-debug/rootfs/boot]
│ ext4 ro,relatime,errors=remount-ro,stripe=32699
└─/usr /dev/sda2[/var/lib/lxc/systemd-debug/rootfs/usr]
ext4 ro,relatime,errors=remount-ro,stripe=32699
Finished with result: success
Main processes terminated with: code=exited/status=0
Service runtime: 14ms
CPU time consumed: 5ms
Host (LXC):
root@systemd-debug:/# findmnt
TARGET SOURCE FSTYPE OPTIONS
/ /dev/sda2[/var/lib/lxc/systemd-debug/rootfs]
│ ext4 rw,relatime,errors=remount-ro,stripe=32699
├─/run tmpfs tmpfs rw,nosuid,nodev,size=4912348k,nr_inodes=819200,mode=755
├─/tmp tmpfs tmpfs rw,nosuid,nodev,size=12280872k,nr_inodes=409600
├─/dev none tmpfs rw,relatime,size=492k,mode=755
│ ├─/dev/pts devpts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/ptmx devpts[/ptmx] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/tty1 devpts[/0] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/tty2 devpts[/1] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/tty3 devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/tty4 devpts[/3] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,ma
│ ├─/dev/shm tmpfs tmpfs rw,nosuid,nodev
│ ├─/dev/hugepages hugetlbfs hugetlbfs rw,relatime,pagesize=2M
│ ├─/dev/mqueue mqueue mqueue rw,nosuid,nodev,noexec,relatime
│ ├─/dev/console devpts[/2] devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
│ ├─/dev/.lxc/proc proc proc rw,relatime
│ └─/dev/.lxc/sys sys sysfs rw,relatime
├─/proc proc proc rw,nosuid,nodev,noexec,relatime
│ ├─/proc/sys proc[/sys] proc ro,nosuid,nodev,noexec,relatime
│ │ ├─/proc/sys/kernel/random/boot_id
│ │ │ none[/.lxc-boot-id] tmpfs ro,nosuid,nodev,noexec,relatime,size=492k,mode=755
│ │ └─/proc/sys/net proc[/sys/net] proc rw,nosuid,nodev,noexec,relatime
│ └─/proc/sysrq-trigger proc[/sysrq-trigger] proc ro,nosuid,nodev,noexec,relatime
└─/sys sysfs sysfs rw,nosuid,nodev,noexec,relatime
└─/sys sysfs sysfs ro,nosuid,nodev,noexec,relatime
├─/sys/devices/virtual/net sysfs sysfs rw,relatime
│ └─/sys/devices/virtual/net
│ sysfs[/devices/virtual/net]
│ sysfs rw,nosuid,nodev,noexec,relatime
├─/sys/fs/fuse/connections fusectl fusectl rw,nosuid,nodev,noexec,relatime
└─/sys/fs/cgroup cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recurs
Fixes https://github.com/systemd/systemd/issues/20032
This reverts commit cb0e818f7c.
After this was merged, some design and implementation issues were discovered,
see the discussion in #18782 and #19385. They certainly can be fixed, but so
far nobody has stepped up, and we're nearing a release. Hopefully, this feature
can be merged again after a rework.
Fixes#19345.
See https://bugzilla.redhat.com/show_bug.cgi?id=1973058 again:
systemd[1779]: Started Application launched by gnome-session-binary.
systemd[1779]: app-glib-liveinst\x2dsetup-1897.scope: Failed to add PIDs to scope's control group: No such process
systemd[1779]: app-glib-liveinst\x2dsetup-1897.scope: Failed with result 'resources'.
systemd[1779]: Failed to start Application launched by gnome-session-binary.
systemd[1779]: app-glib-xdg\x2duser\x2ddirs-1900.scope: Failed to add PIDs to scope's control group: No such process
systemd[1779]: app-glib-xdg\x2duser\x2ddirs-1900.scope: Failed with result 'resources'.
systemd[1779]: Failed to start Application launched by gnome-session-binary.
systemd[1779]: app-gnome-gsettings\x2ddata\x2dconvert-1902.scope: Failed to add PIDs to scope's control group: No such process
systemd[1779]: app-gnome-gsettings\x2ddata\x2dconvert-1902.scope: Failed with result 'resources'.
systemd[1779]: Failed to start Application launched by gnome-session-binary.
Since we don't show the PID anywhere, it can be quite hard to figure out what
is going on. There may be logs from the pid above or below in the log, but
we have no PID number to identify them. So let's upgrade the log from
unit_attach_pids_to_cgroup() to tell us precisely which PIDs and why couldn't
be handled.
The zone1970.tab file doesn't include any timezone 'aliases'. Instead
of parsing it, parse the tzdata.zi file which does include all zones
as well as aliases.
This keeps the parsing function for zone1970.tab as a fallback in case
the tzdata.zi file isn't found.
Previously, if IPv4 ACD is enabled on an address, then we first
assign the address, and start sd-ipv4acd daemon for the address.
This is not only RFC incompliant, but also the address is always
dropped, as the daemon always considers the address is conflicted.
This commit makes networkd first starts sd-ipv4acd daemon to probe
the address, and then the address is configured if no conflict is
detected.
Fixes#17235.
Currently, networkd does not set tentative flag on create, and kernel
ignore the flag on remove. So, this commit does not change any current
behaviour. This is just a preparation for later commits.
See RFC 5227 section 2.1.1.
This introduces a callback which intend to a library user, e.g.
networkd, checks whether the sender hardware address is a MAC address of
the host's intrerface or not.
