From: Shadow package maintainers <pkg-shadow-devel@lists.alioth.debian.org>
Date: Mon, 4 Jun 2012 01:37:48 +0000
Subject: 542_useradd-O_option

Note: useradd.8 needs to be regenerated.

Status wrt upstream: not included as this is just specific
                     backward compatibility for Debian
---
 man/useradd.8.xml |    5 +++++
 src/useradd.c     |    5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)

Index: b/man/useradd.8.xml
===================================================================
--- a/man/useradd.8.xml	2013-07-27 19:33:17.416209819 +0400
+++ b/man/useradd.8.xml	2013-07-27 19:33:19.823730279 +0400
@@ -340,6 +340,11 @@
 	    databases are resetted to avoid reusing the entry from a previously
 	    deleted user.
 	  </para>
+          <para>
+            For the compatibility with previous Debian's
+            <command>useradd</command>, the <option>-O</option> option is
+            also supported.
+          </para>
 	</listitem>
       </varlistentry>
       <varlistentry>
Index: b/src/useradd.c
===================================================================
--- a/src/useradd.c	2013-07-27 19:32:50.976096183 +0400
+++ b/src/useradd.c	2013-07-27 19:33:19.826786636 +0400
@@ -1011,9 +1011,9 @@
 		};
 		while ((c = getopt_long (argc, argv,
 #ifdef WITH_SELINUX
-		                         "b:c:d:De:f:g:G:hk:K:lmMNop:rR:s:u:UZ:",
+		                         "b:c:d:De:f:g:G:hk:O:K:lmMNop:rR:s:u:UZ:",
 #else				/* !WITH_SELINUX */
-		                         "b:c:d:De:f:g:G:hk:K:lmMNop:rR:s:u:U",
+		                         "b:c:d:De:f:g:G:hk:O:K:lmMNop:rR:s:u:U",
 #endif				/* !WITH_SELINUX */
 		                         long_options, NULL)) != -1) {
 			switch (c) {
@@ -1136,6 +1136,7 @@
 				kflg = true;
 				break;
 			case 'K':
+			case 'O': /* compatibility with previous Debian useradd */
 				/*
 				 * override login.defs defaults (-K name=value)
 				 * example: -K UID_MIN=100 -K UID_MAX=499