Changeset 14de455

Timestamp:

05/02/2022 07:36:03 AM (2 years ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

11.2, 11.2-rc1, 11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, bdubbs/gcc13, multilib, renodr/libudev-from-systemd, s6-init, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc

Children:

8469f02

Parents:

d77e98c

Message:

explain the usage of 65534

File:

• chapter07/createfiles.xml (modified) (1 diff)

chapter07/createfiles.xml

@@ -170 +170 @@
   on GID numbers, but rather use the group's name.</para>
 
+  <para>The ID 65534 is used by the kernel for NFS and separate user
+  namespaces for unmapped users (those exist on the NFS server or the parent
+  user namespace, but <quote>do not exist</quote> on the local machine or in
+  the separate namespace).  We assign
+  <systemitem class="username">nobody</systemitem> and
+  <systemitem class="groupname">nogroup</systemitem> for it to avoid an
+  unnamed ID.  But other distros may treat this ID differently, so any
+  portable program should not depend on this assignment.</para>
+
   <para>Some tests in <xref linkend="chapter-building-system"/> need a regular
   user. We add this user here and delete this account at the end of that