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scripts/checkpatch: Check for patches adding #defines for libc APIs #60487

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merged 1 commit into from
Jul 18, 2023
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scripts/checkpatch: Check for patches adding #defines for libc APIs #60487

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21 changes: 21 additions & 0 deletions scripts/checkpatch.pl
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Original file line number Diff line number Diff line change
Expand Up @@ -592,6 +592,20 @@ sub hash_show_words {
["__ATTR", 2],
);

our $api_defines = qr{(?x:
_ATFILE_SOURCE|
_BSD_SOURCE|
_DEFAULT_SOURCE
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@keith-packard missing pipe might be the culprit?

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It actually got moved to the end of the pattern when I sorted the symbols upon request from a reviewer... Checkout #60551 for the fix.

_GNU_SOURCE|
_ISOC11_SOURCE|
_ISOC99_SOURCE|
_POSIX_C_SOURCE|
_POSIX_SOURCE|
_SVID_SOURCE|
_XOPEN_SOURCE|
_XOPEN_SOURCE_EXTENDED|
)};

my $word_pattern = '\b[A-Z]?[a-z]{2,}\b';

#Create a search pattern for all these functions to speed up a loop below
Expand Down Expand Up @@ -6527,6 +6541,13 @@ sub process {
}
}

# check for feature test macros that request C library API extensions, violating rules A.4 and A.5

if ($line =~ /#\s*define\s+$api_defines/) {
ERROR("API_DEFINE",
"do not specify a non-Zephyr API for libc\n" . "$here$rawline\n");
}

# check for IS_ENABLED() without CONFIG_<FOO> ($rawline for comments too)
if ($rawline =~ /\bIS_ENABLED\s*\(\s*(\w+)\s*\)/ && $1 !~ /^CONFIG_/) {
WARN("IS_ENABLED_CONFIG",
Expand Down