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Several functions are shared by qsort and hash_ops or Prioq.
This makes these functions explicitly specify argument type,
and cast to __compar_fn_t where necessary.
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This is a bit like the info link in most of GNU's --help texts, but we
don't do info but man pages, and we make them properly clickable on
terminal supporting that, because awesome.
I think it's generally advisable to link up our (brief) --help texts and
our (more comprehensive) man pages a bit, so this should be an easy and
straight-forward way to do it.
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it's initialized from an argv[] entry, hence let's be make it
non-writable by default.
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These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
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This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
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They are not needed, because anything that is non-zero is converted
to true.
C11:
> 6.3.1.2: When any scalar value is converted to _Bool, the result is 0 if the
> value compares equal to 0; otherwise, the result is 1.
https://stackoverflow.com/questions/31551888/casting-int-to-bool-in-c-c
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Double newlines (i.e. one empty lines) are great to structure code. But
let's avoid triple newlines (i.e. two empty lines), quadruple newlines,
quintuple newlines, …, that's just spurious whitespace.
It's an easy way to drop 121 lines of code, and keeps the coding style
of our sources a bit tigther.
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Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
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This macro will read a pointer of any type, return it, and set the
pointer to NULL. This is useful as an explicit concept of passing
ownership of a memory area between pointers.
This takes inspiration from Rust:
https://doc.rust-lang.org/std/option/enum.Option.html#method.take
and was suggested by Alan Jenkins (@sourcejedi).
It drops ~160 lines of code from our codebase, which makes me like it.
Also, I think it clarifies passing of ownership, and thus helps
readability a bit (at least for the initiated who know the new macro)
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Even if pager_open() fails, in general, we should continue the operations.
All erroneous cases in pager_open() show log message in the function.
So, it is not necessary to check the returned value.
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appropriate places"
This reverts commit 0b3c84eb7da3a8c28ac248a68228f6a7edbb2e19.
The removal of _cleanup_() usages was done on purpose, see
cf647b69baee4c478d3909c327e3d917e1563f44.
Fixes: #3543
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This is useful for testing, and early-boot scripting.
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Let's employ coccinelle to do this for us.
Follow-up for #7625.
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I am puzzled why coccinelle is unwilling to detect these cases...
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Let's replace usage of fputc_unlocked() and friends by __fsetlocking(f,
FSETLOCKING_BYCALLER). This turns off locking for the entire FILE*,
instead of doing individual per-call decision whether to use normal
calls or _unlocked() calls.
This has various benefits:
1. It's easier to read and easier not to forget
2. It's more comprehensive, as fprintf() and friends are covered too
(as these functions have no _unlocked() counterpart)
3. Philosophically, it's a bit more correct, because it's more a
property of the file handle really whether we ever pass it on to another
thread, not of the operations we then apply to it.
This patch reworks all pieces of codes that so far used fxyz_unlocked()
calls to use __fsetlocking() instead. It also reworks all places that
use open_memstream(), i.e. use stdio FILE* for string manipulations.
Note that this in some way a revert of 4b61c8751135c58be043d86b9fef4c8ec7aadf18.
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Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
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A macro is needed because otherwise we couldn't ensure type safety.
Some simple tests are included.
No functional change intended.
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This follows what the kernel is doing, c.f.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
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Fixes: #7330
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places
Let's shorten the code a bit.
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Commit f5938e8ff3cf5b6fadd6b440b3b10fc0e5a64733 started dropping all
messages before we become a monitor, but the last one was getting
through.
This drops also the last NameLost message, which indicatse the switch
from a regular peer to a monitor.
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(#5931)
A connection becomes a monitor the moment it loses its unique name, so any
messages received before that should not be dumped to the console.
Currently, we print NameAcquired and NameLost for the unique name of the
peer that becomes the monitor, simply discard all messages until we
receive our NameLost signal.
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busctl is not part of libsystemd, and should not be stored under libsystemd.
In particular this is confusing because busctl is linked with libshared, but
stuff in libsystemd is not supposed to depend on libshared.
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