From ed087e865896521e5965f218ee61e074a0a098d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20M=C3=A9lotte?= <raphael.melotte@mind.be>
Date: Fri, 14 Jun 2024 14:37:29 +0200
Subject: [PATCH 0859/1160] src/basic/missing_loop.h: fix missing
 LOOP_SET_BLOCK_SIZE
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Builds with kernels headers < 4.14 fail with:

../src/shared/loop-util.c: In function ‘loop_configure_fallback’:
../src/shared/loop-util.c:237:31: error: ‘LOOP_SET_BLOCK_SIZE’ undeclared (first use in this function); did you mean ‘LOOP_SET_DIRECT_IO’?
                 if (ioctl(fd, LOOP_SET_BLOCK_SIZE, (unsigned long) c->block_size) < 0)
                               ^~~~~~~~~~~~~~~~~~~
                               LOOP_SET_DIRECT_IO

Fixes: https://github.com/systemd/systemd/issues/33341

Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
(cherry picked from commit 56ab1c54497d9fac74380ff9e11aaf931a917d2b)
(cherry picked from commit 0730ec4f3ecbbb550864ff0dbadeeeb5e271eb50)
---
 src/basic/missing_loop.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/basic/missing_loop.h b/src/basic/missing_loop.h
index 24b3e0def9..e9c8bae662 100644
--- a/src/basic/missing_loop.h
+++ b/src/basic/missing_loop.h
@@ -22,3 +22,7 @@ struct loop_config {
 #ifndef LOOP_SET_STATUS_SETTABLE_FLAGS
 #define LOOP_SET_STATUS_SETTABLE_FLAGS (LO_FLAGS_AUTOCLEAR | LO_FLAGS_PARTSCAN)
 #endif
+
+#ifndef LOOP_SET_BLOCK_SIZE
+#  define LOOP_SET_BLOCK_SIZE 0x4C09
+#endif
-- 
2.33.0