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journal_file_fstat() returns an error if we call it on already unlinked
journal file and hence we never reach remove_file_real() which is the
entire point.
I must have made some mistake while testing the fix that got me thinking
the issue is gone while opposite was true.
Fixes#14695
This is work in progress and not finished yet. However, I hope to have
captured some of the key points that came up in previous discussions
with appropriate notes about things that still need to be defined.
I may revisit it later. Also, feel free to completely rewrite if the
format is not quite right.
In 1a29610f5f the change inadvertedly
disabled names with digit as the first character. This follow-up change
allows a digit as the first character in compat mode.
Fixes: #15141
When there are hundreds of mounts on the server, it will take a long
time to analyze the failure of a certain mount unit. So it is useful
to print the reason why unit_add_name() failed.
Add a simple check on the number of unit files that were found: return
`-ENOENT` when none is found from the function and thus `systemctl`
consequently exits with `1` (`EXIT_FAILURE`) if none were found.
Verification:
```bash
root@image:~# systemctl list-unit-files dbus-nonexistant.service; echo
$?
UNIT FILE STATE VENDOR PRESET
0 unit files listed.
1
root@image:~# systemctl list-unit-files dbus.service; echo $?
UNIT FILE STATE VENDOR PRESET
dbus.service static enabled
1 unit files listed.
0
```
Fixes#15082.
A common pattern in the codebase is reading a cgroup memory value
and converting it to a uint64_t. Let's make it a helper and refactor a
few places to use it so it's more concise.
Commit 08c588d18b moved attachment of the
sd-event into creation of the dhcp_client or ipv4ll in dhcp4_configure()
or ipv4ll_configure(), but these can also be created in link_load(),
so that creation needs to also perform sd-event attachment.
Without this, dhcp_client or ipv4ll created in link_load() will not have
an ->event and will fail assertion, causing networkd to fail, e.g.:
Assertion 'client->event' failed at src/libsystemd-network/sd-dhcp-client.c:1283, function client_start_delayed(). Ignoring.
ens2: Could not acquire DHCPv4 lease: Invalid argument
ens2: Failed
This may be not a popular setup, but in case kexec resides somewhere different
than the default location for KEXEC (`/usr/sbin/kexec`), don't just reboot and
try doing `reboot(RB_KEXEC)` instead, just like what `kexec -e` normally does.
```
❯ build/networkctl status veth99 ─╯
● 17: veth99
Link File: /usr/lib/systemd/network/99-default.link
Network File: /usr/lib/systemd/network/veth99.network
Type: ether
State: routable (configured)
Driver: veth
HW Address: 1e:04:f8:b8:2f:d4
MTU: 1500 (min: 68, max: 65535)
QDisc: noqueue
IPv6 Address Generation Mode: eui64
Queue Length (Tx/Rx): 1/1
Auto negotiation: no
Speed: 10Gbps
Duplex: full
Port: tp
Address: 192.168.5.35 (DHCP4)
fe80::1c04:f8ff:feb8:2fd4
Gateway: 192.168.5.1
DNS: 192.168.5.1
NTP: 192.168.5.1
SIP: 192.168.5.4
192.168.5.5
Time Zone: Europe/Berlin
Mar 21 23:26:32 Zeus systemd-networkd[671]: veth99: Link DOWN
Mar 21 23:26:32 Zeus systemd-networkd[671]: veth99: Lost carrier
Mar 22 10:25:35 Zeus systemd-networkd[671]: veth99: Link UP
Mar 22 10:25:35 Zeus systemd-networkd[671]: veth99: Gained carrier
Mar 22 10:25:36 Zeus systemd-networkd[671]: veth99: Gained IPv6LL
Mar 22 10:29:02 Zeus systemd-networkd[671]: veth99: Link DOWN
Mar 22 10:29:02 Zeus systemd-networkd[671]: veth99: Lost carrier
Mar 22 10:29:13 Zeus systemd-networkd[671]: veth99: Link UP
Mar 22 10:29:13 Zeus systemd-networkd[671]: veth99: Gained carrier
Mar 22 10:29:14 Zeus systemd-networkd[671]: veth99: Gained IPv6LL
```
