From 4aa6831f14175db6e3792cf84bb992fcfde832bd Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Sat, 24 Feb 2024 13:24:20 +0800
Subject: [PATCH] glibc: Don't "overwrite" libcrypt.so.1* when updating

As we've already concluded, overwriting a shared object can crash
running processes using code or data from this shared object.  For
example if gdm is crashed, we may leave the system unusable :(.
---
 chapter08/glibc.xml     | 2 +-
 chapter08/libxcrypt.xml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/chapter08/glibc.xml b/chapter08/glibc.xml
index 486164cf9..49eeceb1c 100644
--- a/chapter08/glibc.xml
+++ b/chapter08/glibc.xml
@@ -240,7 +240,7 @@ esac</userinput></screen>
             <emphasis role='bold'>you MUST follow the note in Libxcrypt
             section to install
             <filename class='libraryfile'>libcrypt.so.1*</filename>
-            (overwritting
+            (replacing
             <filename class='libraryfile'>libcrypt.so.1</filename> from the
             prior Glibc installation)</emphasis>.
           </para>
diff --git a/chapter08/libxcrypt.xml b/chapter08/libxcrypt.xml
index 7c6cc15ba..fb4c4adaa 100644
--- a/chapter08/libxcrypt.xml
+++ b/chapter08/libxcrypt.xml
@@ -110,7 +110,7 @@
             --disable-static             \
             --disable-failure-tokens
 make
-cp -av .libs/libcrypt.so.1* /usr/lib</userinput></screen>
+cp -av --remove-destination .libs/libcrypt.so.1* /usr/lib</userinput></screen>
     </note>
 
   </sect2>