linux-kernel - [PATCH] kheaders: Follow symlinks to source files.

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Message-ID: <20230419002946.2566272-1-elsk@google.com>
Date:   Wed, 19 Apr 2023 00:29:36 +0000
From:   Yifan Hong <elsk@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        "Thomas Weißschuh" <linux@...ssschuh.net>,
        Nicolas Schier <nicolas@...sle.eu>,
        Daniel Mentz <danielmentz@...gle.com>
Cc:     Yifan Hong <elsk@...gle.com>, kernel-team@...roid.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kheaders: Follow symlinks to source files.

When the kernel is built inside a sandbox container,
a forest of symlinks to the source files may be
created in the container. In this case, the generated
kheaders.tar.xz should follow these symlinks
to access the source files, instead of packing
the symlinks themselves.

Signed-off-by: Yifan Hong <elsk@...gle.com>
---
 kernel/gen_kheaders.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/gen_kheaders.sh b/kernel/gen_kheaders.sh
index 1ef9a87511f5..183d9a44aa39 100755
--- a/kernel/gen_kheaders.sh
+++ b/kernel/gen_kheaders.sh
@@ -87,7 +87,7 @@ find $cpio_dir -type f -print0 |
 # pre-sorted, as --sort=name might not be available.
 find $cpio_dir -printf "./%P\n" | LC_ALL=C sort | \
     tar "${KBUILD_BUILD_TIMESTAMP:+--mtime=$KBUILD_BUILD_TIMESTAMP}" \
-    --owner=0 --group=0 --numeric-owner --no-recursion \
+    --owner=0 --group=0 --numeric-owner --no-recursion -h \
     -I $XZ -cf $tarfile -C $cpio_dir/ -T - > /dev/null
 
 echo $headers_md5 > kernel/kheaders.md5
-- 
2.40.0.634.g4ca3ef3211-goog