From 94334f9d207d0fbe50d92e64669082538ca2442d Mon Sep 17 00:00:00 2001
From: Arnout Vandecappelle <arnout@rnout.be>
Date: Tue, 2 Jun 2026 12:41:05 +0200
Subject: [PATCH] package/systemd: fix host build with 7.0+ kernel
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Linux v7.0 introduced a few more errno values that are aliases of other
errnos. This causes the following error:

In file included from ../src/basic/errno-list.c:13:
src/basic/errno-to-name.h:71:23: error: initialized field overwritten [-Werror=override-init]
   71 |         [EFSBADCRC] = "EFSBADCRC",
      |                       ^~~~~~~~~~~
src/basic/errno-to-name.h:71:23: note: (near initialization for ‘errno_names[74]’)
src/basic/errno-to-name.h:114:26: error: initialized field overwritten [-Werror=override-init]
  114 |         [EFSCORRUPTED] = "EFSCORRUPTED",
      |                          ^~~~~~~~~~~~~~
src/basic/errno-to-name.h:114:26: note: (near initialization for ‘errno_names[117]’)
cc1: some warnings being treated as errors

For target systemd this is not an issue as we don't support v7.0,
however it also occurs for host-systemd when building on a system with
kernel v7.0+.

Backport an upstream patch that excludes these two errnos from the
errno-to-name array. The upstream patch was applied to v261 and
backported to v258.5, but it was not backported to v256-stable (which is
EOL).

Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
---
 ...ilter-out-EFSBADCRC-and-EFSCORRUPTED.patch | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 package/systemd/0002-errno-list-filter-out-EFSBADCRC-and-EFSCORRUPTED.patch

diff --git a/package/systemd/0002-errno-list-filter-out-EFSBADCRC-and-EFSCORRUPTED.patch b/package/systemd/0002-errno-list-filter-out-EFSBADCRC-and-EFSCORRUPTED.patch
new file mode 100644
index 0000000000..38fd0baf45
--- /dev/null
+++ b/package/systemd/0002-errno-list-filter-out-EFSBADCRC-and-EFSCORRUPTED.patch
@@ -0,0 +1,37 @@
+From ad6a29985b6d78a37af5616338e51bafc8653c71 Mon Sep 17 00:00:00 2001
+From: Yu Watanabe <watanabe.yu+github@gmail.com>
+Date: Tue, 24 Feb 2026 20:19:45 +0900
+Subject: [PATCH] errno-list: filter out EFSBADCRC and EFSCORRUPTED
+
+These are introduced in kernel v7.0.
+
+Upstream: https://github.com/systemd/systemd/commit/3cfb16998808a6ec8012a6120d0a82f0e1a0c8bb
+Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
+---
+ src/basic/generate-errno-list.sh | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/src/basic/generate-errno-list.sh b/src/basic/generate-errno-list.sh
+index f756b2e020..491fa1b6e3 100755
+--- a/src/basic/generate-errno-list.sh
++++ b/src/basic/generate-errno-list.sh
+@@ -3,9 +3,13 @@
+ set -eu
+ set -o pipefail
+ 
+-# In kernel's arch/parisc/include/uapi/asm/errno.h, ECANCELLED and EREFUSED are defined as aliases of
+-# ECANCELED and ECONNREFUSED, respectively. Let's drop them.
++# In kernel's arch/parisc/include/uapi/asm/errno.h, The following aliases are defined:
++# ECANCELLED → ECANCELED
++# EREFUSED → ECONNREFUSED
++# EFSBADCRC → EBADMSG
++# EFSCORRUPTED → EUCLEAN
++# Let's drop them.
+ 
+ ${1:?} -dM -include errno.h - </dev/null | \
+-       grep -Ev '^#define[[:space:]]+(ECANCELLED|EREFUSED)' | \
++       grep -Ev '^#define[[:space:]]+(ECANCELLED|EREFUSED|EFSBADCRC|EFSCORRUPTED)' | \
+        awk '/^#define[ \t]+E[^ _]+[ \t]+/ { print $2; }'
+-- 
+2.54.0
+