id: don't print context=... when POSIXLY_CORRECT is set

* src/id.c (print_full_info) [POSIXLY_CORRECT]: Don't print context.
Reported by Ulrich Drepper.
* NEWS (Changes in behavior): Mention it.
* doc/coreutils.texi (id invocation): Document that id also prints the
security context, when possible, and when POSIXLY_CORRECT is not set.
* tests/id/no-context: New file.  Test for this.
* tests/Makefile.am (TESTS): Add it.

1 files changed, 40 insertions, 0 deletions

diff --git a/tests/id/no-context b/tests/id/no-context
new file mode 100755
index 000000000..f875ee0bc
--- /dev/null
+++ b/tests/id/no-context
@@ -0,0 +1,40 @@
+#!/bin/sh
+# With POSIXLY_CORRECT, id must not print context=...
+
+# Copyright (C) 2009 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  id --version
+fi
+
+. $srcdir/test-lib.sh
+
+# We don't need selinux *FS* support to test id,
+# but this is as good a witness as any, in general.
+require_selinux_
+
+fail=0
+
+# Require the context=... part by default.
+id > out || fail=1
+grep context= out || fail=1
+
+# Require no context=... part in conforming mode.
+POSIXLY_CORRECT=1 id > out || fail=1
+grep context= out && fail=1
+
+Exit $fail