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kbuild: simplify access to the kernel's version

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Instead of storing the version in a single integer and having various
kernel (and userspace) code how it's constructed, export individual
(major, patchlevel, sublevel) components and simplify kernel code that
uses it.

This should also make it easier on userspace.

Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Sasha Levin
2021-02-12 11:29:24 -05:00
committed by Masahiro Yamada
parent 9b82f13e7e
commit 88a686728b
6 changed files with 13 additions and 10 deletions
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2
kernel/sys.c
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@@ -1243,7 +1243,7 @@ static int override_release(char __user *release, size_t len)
break;
rest++;
}
v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 60;
v = LINUX_VERSION_PATCHLEVEL + 60;
copy = clamp_t(size_t, len, 1, sizeof(buf));
copy = scnprintf(buf, copy, "2.6.%u%s", v, rest);
ret = copy_to_user(release, buf, copy + 1);