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man: newuid and newgid: point out that root must be allocated subuids

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Users may otherwise be confused and think that because the kernel
does not restrict uid mappings to the root user (within his
current uid mappings), newuidmap will ignore /etc/subuid for the
root user.  It will not.

Reported-by: Philippe Grégoire <gregoirep@hotmail.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Serge Hallyn 2014-06-09 17:37:16 -05:00
parent 578947e661
commit 980c804153
2 changed files with 4 additions and 0 deletions
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2
man/newgidmap.1.xml
View File

@ -85,6 +85,8 @@
<para>
The <command>newgidmap</command> sets <filename>/proc/[pid]/gid_map</filename> based on it's
command line arguments and the gids allowed in <filename>/etc/subgid</filename>.
Note that the root user is not exempted from the requirement for a valid
<filename>/etc/subgid</filename> entry.
</para>
<para>

2
man/newuidmap.1.xml
View File

@ -82,6 +82,8 @@
<para>
The <command>newuidmap</command> sets <filename>/proc/[pid]/uid_map</filename> based on it's
command line arguments and the uids allowed in <filename>/etc/subuid</filename>.
Note that the root user is not exempted from the requirement for a valid
<filename>/etc/subuid</filename> entry.
</para>
<para>