IPPROTO_L2TP was moved from linux/l2tp.h to linux/in.h [0], so let's
reflect that change to fix build with newer kernels:
```
In file included from ../src/libsystemd/sd-netlink/netlink-types-genl.c:10:
../src/basic/linux/l2tp.h:16: error: "IPPROTO_L2TP" redefined [-Werror]
16 | #define IPPROTO_L2TP 115
|
In file included from ../src/libsystemd/sd-netlink/netlink-types-genl.c:3:
/usr/include/netinet/in.h:85: note: this is the location of the previous definition
85 | #define IPPROTO_L2TP IPPROTO_L2TP
|
cc1: all warnings being treated as errors
```
When at it, update the rest of the headers we ship as well.
[0] https://github.com/torvalds/linux/commit/65b32f801bfbc54dc98144a6ec26082b59d131ee
Follow-ups for 8702496bfb.
- add missing error cause in logging,
- add several missing assertions,
- drop an unnecessary initialization,
- make boot_config_find_in() return negative errno if nothing found,
- and several coding style fixlets.
Follow-ups for #26124 and #26158.
- use os_release_pretty_name(),
- constify the buffer passed to inspect_osrel(),
- propagate errors in inspect_osrele(), and ignore them in the caller
side,
- and several coding style fixlets.
Since the empty_to_null() function was "macrofied", we need to use a bit
of black magic to make Coccinelle avoid running the transformation on
the macro itself.
Follow-up to ef2409cbde.
When compiled without ENABLE_EFI, efi_stub_measured() was not defined, so
compilation would fail. But it's not enough to add a stub that returns
-EOPNOTSUPP. We call this function in various places and usually print the error
at warning or error level, so we'd print a confusing message. We also can't add
a stub that always returns 0, because then we'd print a message like "Kernel
stub did not measure", which would be confusing too. Adding special handling for
-EOPNOTSUPP in every caller is also unattractive. So instead efi_stub_measured()
is reworked to log the warning or error internally, and such logging is removed
from the callers, and a stub is added that logs a custom message.
Let's port one more over.
Note that this changes behaviour of file_in_same_dir() in some regards.
Specifically, a trailing slash of the input path will be treated
differently: previously we'd operate below that dir then, instead of the
parent. I think that makes little sense however, and I think the code
using this function doesn't expect that either.
Moroever, addresses some corner cases if the path is specified as "/" or
".", i.e. where e cannot extract a parent. These will now be treated as
error, which I think is much cleaner.
Presumably vendors establish a global EOL time, hence its better to
interpret the date specification everywhere the same, instead of
timezone dependent.
.link files are handled by systemd-udevd, not by systemd-networkd,
so fix the man page to say that the Credential= match uses credentials set
on the systemd-udevd.service