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This reverts commit 94cb45d57f.
This rule set up a duplicate import:
$ udevadm test /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.1/2-4.1.3
...
2-4.1.3: /usr/lib/udev/rules.d/40-libgphoto2.rules:9 Importing properties from results of builtin command 'usb_id'
2-4.1.3: /usr/lib/udev/rules.d/50-udev-default.rules:13 Skipping builtin 'usb_id' in IMPORT key
2-4.1.3: /usr/lib/udev/rules.d/50-udev-default.rules:13 Importing properties from results of builtin command 'hwdb --subsystem=usb'
2-4.1.3: hwdb modalias key: "usb:v17EFp3054:OneLink+ Giga"
2-4.1.3: /usr/lib/udev/rules.d/50-udev-default.rules:15 Importing properties from results of builtin command 'hwdb 'usb:v17efp3054''
2-4.1.3: No entry found from hwdb.
2-4.1.3: /usr/lib/udev/rules.d/50-udev-default.rules:15 Failed to run builtin 'hwdb 'usb:v17efp3054'': No data available
2-4.1.3: /usr/lib/udev/rules.d/50-udev-default.rules:52 MODE 0664
except that the existing one was done with uppercase digits and the full match pattern,
and the second one was done with lowercase digits.
With the previous commit we only have uppercase digits in our match patterns, so we can
drop the duplicate import. (Some other projects might have rules that used the lowercase
match patterns, and people might have some local rules that did that too. But the second
import was only added recently so I think it's better to rip off the bandaid quickly.)
The check was added in 77547d5313, but
it doesn't work as expected. Because the second part is wrapped in Optional(),
it would silently "succeed" when the lowercase digits were in the second part:
>>> from parse_hwdb import *
>>> g = 'v' + upperhex_word(4) + Optional('p' + upperhex_word(4))
>>> g.parseString('v04D8pE11C*')
(['v', '04D8', 'p', 'E11C'], {})
>>> g.parseString('v04D8pe11c*')
(['v', '04D8'], {})
The following matches are OK:
usb:v0627p0001:*QEMU USB Keyboard*
usb:v0627p0001:*
usb:v0627p0001*
usb:v0627*
The code assume that meson's cpu_family can be mapped directly to
'-D__<cpu_family>__'. This works in a surprising number of cases, but not for a
few architectures. PPC uses "powerpc", and RISC-V omits the trailing underscores.
ARM and RISC-V require a second define too.
Fixes#21900.
(I don't think this matters too much: we need *something* so that gnu/stubs.h
can be successfully included. But we don't actually call syscalls or depend too
much on the host environment, so things should be fine as long as we don't get
a compilation error.)
When the support for "synthetic errno" was added, we started truncating
the errno value to just the least significant byte. This is generally OK,
because errno values are defined up to ~130.
The docs don't really say what the maximum value is. But at least in principle
higher values could be added in the future. So let's stop truncating
the values needlessly.
The kernel (or libbpf?) have an error where they return 524 as an errno
value (https://bugzilla.redhat.com/show_bug.cgi?id=2036145). We would
confusingly truncate this to 12 (ENOMEM). It seems much nicer to let
strerror() give us "Unknown error 524" rather than to print the bogus
message about ENOMEM.
The COREDUMP_EXE attribute is "optional", i.e. we continue to process the
crash even if we didn't acquire it. The coredump generation code assumed
that it is always available:
#5 endswith at ../src/fundamental/string-util-fundamental.c:41
[ endswith() is called with NULL here, and an assertion fails. ]
#6 submit_coredump at ../src/coredump/coredump.c:823
#7 process_socket at ../src/coredump/coredump.c:1038
#8 run at ../src/coredump/coredump.c:1413
We use the exe path for loop detection, and also (ultimately) pass it to
dwfl_core_file_report(). The latter seems to be fine will NULL, so let's just
change our code to look at COMM, which should be more reliable anyway.
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=2036517.
The code was written unidiomatically, using r as a boolean value, and
confusing errno and r in some places. AFAICS, there wasn't any actual
problem: even in the one place where errno was used instead of r, it would
almost certainly be initialized.
It seems that some libbpf functions set errno, while others return the
error, possibly encoded. Since there are almost no docs, the only way to
know is to read the code of the function. To make matters worse, there is
a global libbpf_mode which can be set to change the convention. With
LIBBPF_STRICT_DIRECT_ERRS in libbpf_mode, some functions set errno while others
return a negative error, and the only way to know is to read the code, except
that the split is now different. We currently don't set
LIBBPF_STRICT_DIRECT_ERRS, but even the possibility makes everything harder
to grok.
This is all very error-prone. Let's at least add some asserts to make sure that
the returned values are as expected.
Not aligning these can create gaps in the section table. Some
firmware does not handle this nicely resulting in secure boot
signature fails.
Using objcopy ensures that any new sections in the future will be
properly aligned.
Fixes: #21956
Changing the efi compiler this way doesn't really work. The gnu-efi
header checks as well as supported compiler flag checks use the
regular cc that meson detects. Changing the compiler this way will
end up with bad compiler flags. For the very same reason, this does
not work with a cross-compiler without going through proper meson
cross-compilation steps either.
The proper way to build systemd-boot with a different compiler is to
use a different build folder and then just use the proper ninja build
target to only build the bootloader/stub.
