ls: --color now highlights files with capabilities, too

* src/ls.c: [HAVE_CAP] Include <sys/capability.h>.
(has_capability): New function for capability detection.
(print_color_indicator): Colorize file with capability.
* m4/jm-macro.m4: New configure option: --disable-libcap.
Check for libcap usability.
* src/Makefile.am (dir_LDADD, ls_LDADD, ...): Append $(LIB_CAP).
* src/dircolors.c: Update color lists.
* src/dircolors.hin: Mention new CAPABILITY color attribute.
* tests/ls/capability: Test for ls - colorize file with capability.
* tests/Makefile.am (root_tests): Add ls/capability.
* NEWS: Mention the change.

2 files changed, 44 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index c2da63086..7bdf88aad 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -25,6 +25,7 @@ root_tests =					\
   cp/cp-a-selinux				\
   cp/preserve-gid				\
   cp/special-bits				\
+  ls/capability					\
   ls/nameless-uid				\
   misc/chcon					\
   misc/selinux					\
diff --git a/tests/ls/capability b/tests/ls/capability
new file mode 100755
index 000000000..fcd3c2ad3
--- /dev/null
+++ b/tests/ls/capability
@@ -0,0 +1,43 @@
+#!/bin/sh
+# Ensure "ls --color" properly colorizes file with capability.
+
+# Copyright (C) 2008 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
+  ls --version
+fi
+
+. $srcdir/test-lib.sh
+require_root_
+
+(setcap --help) 2>&1 |grep 'usage: setcap' > /dev/null \
+  || skip_test_ "setcap utility not found"
+fail=0
+
+# Don't let a different umask perturb the results.
+umask 22
+
+touch test
+setcap cap_net_bind_service=ep test \
+  || skip_test_ "setcap doesn't work"
+code='30;41'
+LS_COLORS="ca=$code" \
+  ls --color=always test > out || fail=1
+printf "\033[0m\033[${code}mtest\033[0m\n\033[m" > out_ok || fail=1
+compare out out_ok || fail=1
+
+(exit $fail); exit $fail