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and the same for hibernate.target and hybrid-sleep.target.
Tested with both sucessful and unsuccessful suspends. The result of the
start job was correct in both cases. Closes#6419 (a regression in v233
and v234).
> suspend is unsual for a target, because it has to stop itself once it's
> started. Otherwise you couldn't start it again, so you could only suspend
> once! Currently that's implemented using BindsTo=systemd-sleep.service.
> Meaning it pulls in systemd-sleep.service to do the actual suspend, and
> then de-activates afterwards. But the behaviour of BindsTo was changed
> recently (not without some issues during development) - maybe this bug
> is caused by poettering/systemd@631b676 which I think was added in
> release v233.
>
> sleep.target (see man systemd.special) has the same need, but it
> implements it differently. It simply has StopWhenUnneeded=yes.
This commit switches suspend.target etc. to the approach used by
sleep.target.
`systemctl default` uses job mode `isolate` (see `action_table`).
The job mode option is ignored.
Note that exiting the emergency shell service by using e.g.
`systemctl isolate multi-user` or `systemctl start multi-user.target`
already kills `emergency.service`. There's only a potential conflict
between your command and the command in systemd-sulogin-shell if you run
something like `systemctl start --no-block multi-user.target; exit`.
Which is nothing like what we told them to do :).
When a device is unplugged all device units sharing the same sysfs path
pointing to that device are supposed to be removed.
However it didn't work since while iterating the device unit list containing
all the relevant units, each unit was removed during each iteration of
LIST_FOREACH. However LIST_FOREACH doesn't support this use case and
LIST_FOREACH_SAFE must be use instead.
If a message is too large to fit into the output buffer, it will be
transmitted to the kernel in several chunks. However, the FDs must
only ever be transmitted once or they will bereceived by the remote
end repeatedly.
The D-Bus specification disallows several sets of FDs attached to
one message, however, the reference implementation of D-Bus will
not reject such a message, rather it will reassign the duplicate
FDs to subsequent FD-carrying messages.
This attaches the FD array only to the first byte of the message.
Commit also mentions that when running under valgrind we actually don't
execve() systemd-shutdown. We have a comment about this in the code, but
being upfront about this change in behavior doesn't hurt.
We have an embedded board with a couple of ethernet ports. From the kernel
log, I can see that the ethernet drivers are obtaining their correct MAC
address, but for some reason, at first systemd-networkd doesn't see the
mac address for the ethernet port at the time that it looks at
dhcp_client_identifier configuration (it has 00:00:00:00:00:00 for mac).
Later on, systemd-networkd gets a link_update() call, and at this time, it
has the correct mac address for the ethernet port. However, in link_update()
the dhcp_client_identifier configuration is not being considered, and a call
to sd_dhcp_client_set_iaid_duid() is being done always
Let's lock the personality to the currently set one, if nothing is
specifically specified. But do so with a grain of salt, and never
default to any exotic personality here, but only PER_LINUX or
PER_LINUX32.
Add LockPersonality boolean to allow locking down personality(2)
system call so that the execution domain can't be changed.
This may be useful to improve security because odd emulations
may be poorly tested and source of vulnerabilities, while
system services shouldn't need any weird personalities.
> glibc exports a function called sync(), we should probably avoid
> overloading that as a variable here locally (gcc even used to warn about
> that, not sure why it doesn't anymore), to avoid confusion around what
> "if (sync)" actually means
This helps prevent symbol collisions with other programs and libraries. In particular,
because PAM modules are loaded into the process that is creating the session, and
systemd creates PAM sessions, the potential for collisions is high.
Disambiguate all systemd calls by tagging a 'version' SD_SHARED.
Fixes#6624
`journalctl -o export | systemd-journal-remote -o /tmp/dir -`
gives the following error messages.
```
Failed to open output journal /tmp/dir: Invalid argument
Failed to get writer for source stdin: Invalid argument
Failed to create source for fd:0 (stdin): Invalid argument
```
And these are hard to understand what is the problem.
This commit makes journal-remote check whether the output file name
ends with .journal suffix or not, and if not, output error message.
