Coccinelle can't do this automagically and requires we supply it
respective header files. Unfortunately, the option for this
(--macro-file=) can be used only once, so let's create our own
macro file by collecting macros needed for the semantic parser
to be happy.
My former dumb me didn't read the documentation properly, so with the
introduction of custom isomorphisms I caused two issues:
1) Masked all standard isomorphisms defined by Coccinelle
2) Replace the original issue with a completely new one
There's no point in running these transformation for certain files,
mainly anything from src/boot/efi and src/shared/linux, as this code
doesn't have access to our internal utility functions
Coccinelle needs a custom isomorphism file with rules (isomorphisms) how
to correctly rewrite conditions with explicit NULL checks (i.e.
if (ptr == NULL)) to their shorter form (i.e. if (!ptr)). Coccinelle
already contains such isomorphisms in its default .iso file, however,
they're in the opposite direction, which results in useless output from
coccinelle/equals-null.cocci.
With this fix, `spatch` should no longer report patches like:
@@ -628,8 +628,9 @@ static int path_deserialize_item(Unit *u
f = path_result_from_string(value);
if (f < 0)
log_unit_debug(u, "Failed to parse result value: %s", value);
- else if (f != PATH_SUCCESS)
- p->result = f;
+ else {if (f != PATH_SUCCESS)
+ p->result = f;
+ }
} else
log_unit_debug(u, "Unknown serialization key: %s", key);
We had all kinds of indentation: 2 sp, 3 sp, 4 sp, 8 sp, and mixed.
4 sp was the most common, in particular the majority of scripts under test/
used that. Let's standarize on 4 sp, because many commandlines are long and
there's a lot of nesting, and with 8sp indentation less stuff fits. 4 sp
also seems to be the default indentation, so this will make it less likely
that people will mess up if they don't load the editor config. (I think people
often use vi, and vi has no support to load project-wide configuration
automatically. We distribute a .vimrc file, but it is not loaded by default,
and even the instructions in it seem to discourage its use for security
reasons.)
Also remove the few vim config lines that were left. We should either have them
on all files, or none.
Also remove some strange stuff like '#!/bin/env bash', yikes.
spatch is single-threaded, i.e. slow. On my machine it allocates 5 GB of memory
and starts swapping, which makes it even slower. Using parallel makes the whole
thing pleasantly fast.
Also, allow run-cocinnelle.sh to be started from any directory.
Unfortunately set -x does not work nicely anymore, because the list is
too verbose. Replace it by an echo line.
Let's include the command line to use to get the requested output. This
makes it easy to copy/paste the command line out, and add "--in-place"
to actually apply the changes "run-coccinelle.sh" outputs.
It doesn't work, spits out only rubbish and was already excluded of
run-coccinelle.sh. It's a pitty it doesn't work, but let's drop this
dead piece of code for now.
Frantisek Sumsal