From 464fd24324b4d87e8378f7463800a2e65bf74678 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Sun, 2 Jun 2024 19:38:25 +0800
Subject: [PATCH 1/2] udev & systemd: Emphasis "API headers" for linux
 compatibility

Or people will ask "why no-break-userspace rule does not apply?"
---
 chapter08/systemd.xml | 2 +-
 chapter08/udev.xml    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/chapter08/systemd.xml b/chapter08/systemd.xml
index 30b99fc17..effd15165 100644
--- a/chapter08/systemd.xml
+++ b/chapter08/systemd.xml
@@ -48,7 +48,7 @@
  <screen><userinput remap="pre">sed -i -e 's/GROUP="render"/GROUP="video"/' \
        -e 's/GROUP="sgx", //' rules.d/50-udev-default.rules.in</userinput></screen>
 
- <para>Next, fix compatibility with linux-6.9 and later:</para>
+ <para>Next, fix compatibility with API headers from linux-6.9 and later:</para>
 
  <screen><userinput remap="pre">sed -i '/DEVMEM_MAGIC 0/{n;n;a \
 /* cb12fd8e0dabb9a1c8aef55a6a41e2c255fcdf4b (6.8) */
diff --git a/chapter08/udev.xml b/chapter08/udev.xml
index 8f71237b8..1c293a851 100644
--- a/chapter08/udev.xml
+++ b/chapter08/udev.xml
@@ -55,7 +55,7 @@
 
  <screen><userinput remap="pre">sed '/systemd-sysctl/s/^/#/' -i rules.d/99-systemd.rules.in</userinput></screen>
 
- <para>Next, fix compatibility with linux-6.9 and later:</para>
+ <para>Next, fix compatibility with API headers from linux-6.9 and later:</para>
 
  <screen><userinput remap="pre">sed -i '/DEVMEM_MAGIC 0/{n;n;a \
 /* cb12fd8e0dabb9a1c8aef55a6a41e2c255fcdf4b (6.8) */ \

From b3c50e06f676f2dfbb3b709c3cf86784d0c5b275 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Sun, 2 Jun 2024 19:45:09 +0800
Subject: [PATCH 2/2] systemd: Fix the sed adding PID_FS_MAGIC into
 src/basic/missing_magic.h

Without this trailing backslash only one line (the comment) is added.

Note that udev.xml contains the correct sed.
---
 chapter08/systemd.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chapter08/systemd.xml b/chapter08/systemd.xml
index effd15165..e798b6d6b 100644
--- a/chapter08/systemd.xml
+++ b/chapter08/systemd.xml
@@ -51,7 +51,7 @@
  <para>Next, fix compatibility with API headers from linux-6.9 and later:</para>
 
  <screen><userinput remap="pre">sed -i '/DEVMEM_MAGIC 0/{n;n;a \
-/* cb12fd8e0dabb9a1c8aef55a6a41e2c255fcdf4b (6.8) */
+/* cb12fd8e0dabb9a1c8aef55a6a41e2c255fcdf4b (6.8) */ \
 #ifndef PID_FS_MAGIC \
 #define PID_FS_MAGIC 0x50494446 \
 #endif