1 files changed, 228 insertions, 0 deletions
diff --git a/tests/cp/cp-a-selinux.sh b/tests/cp/cp-a-selinux.sh
new file mode 100755
index 0000000..0f94c23
--- /dev/null
+++ b/tests/cp/cp-a-selinux.sh
@@ -0,0 +1,228 @@
+#!/bin/sh
+# Ensure that cp -Z, -a and cp --preserve=context work properly.
+# In particular, test on a writable NFS partition.
+# Check also locally if --preserve=context, -a and --preserve=all
+# does work
+
+# Copyright (C) 2007-2020 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 <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ cp
+require_root_
+require_selinux_
+
+cwd=$(pwd)
+cleanup_() { cd /; umount "$cwd/mnt"; }
+
+# This context is special: it works even when mcstransd isn't running.
+ctx='root:object_r:tmp_t'
+mls_enabled_ && ctx="$ctx:s0"
+
+# Check basic functionality - before check on fixed context mount
+touch c || framework_failure_
+chcon $ctx c || skip_ "Failed to set context: $ctx"
+cp -a c d 2>err || framework_failure_
+cp --preserve=context c e || framework_failure_
+cp --preserve=all c f || framework_failure_
+ls -Z d | grep $ctx || fail=1
+# there must be no stderr output for -a
+compare /dev/null err || fail=1
+ls -Z e | grep $ctx || fail=1
+ls -Z f | grep $ctx || fail=1
+rm -f f
+
+# Check handling of existing dirs which requires specific handling
+# due to recursion, and was handled incorrectly in coreutils-8.22
+# Note standard permissions are updated for existing directories
+# in the destination, so SELinux contexts should be updated too.
+mkdir -p backup/existing_dir/ || framework_failure_
+ls -Zd backup/existing_dir > ed_ctx || fail=1
+grep $ctx ed_ctx && framework_failure_
+touch backup/existing_dir/file || framework_failure_
+chcon $ctx backup/existing_dir/file || framework_failure_
+# Set the dir context to ensure it is reset
+mkdir -p --context="$ctx" restore/existing_dir || framework_failure_
+# Copy and ensure existing directories updated
+cp -a backup/. restore/ || fail=1
+ls -Zd restore/existing_dir > ed_ctx || fail=1
+grep $ctx ed_ctx &&
+  { ls -lZd restore/existing_dir; fail=1; }
+
+# Check context preserved with directories created with --parents,
+# which was not handled before coreutils-8.27
+mkdir -p parents/a/b || framework_failure_
+ls -Zd parents/a/b > ed_ctx || fail=1
+grep $ctx ed_ctx && framework_failure_
+touch parents/a/b/file || framework_failure_
+chcon $ctx parents/a/b || framework_failure_
+# Set the dir context to ensure it is reset
+mkdir -p --context="$ctx" parents_dest/parents/a || framework_failure_
+# Copy and ensure existing directories updated
+cp -r --parents --preserve=context parents/a/b/file parents_dest || fail=1
+# Check new context
+ls -Zd parents_dest/parents/a/b > ed_ctx || fail=1
+grep $ctx ed_ctx ||
+  { ls -lZd parents_dest/parents/a/b; fail=1; }
+# Check updated context
+ls -Zd parents_dest/parents/a > ed_ctx || fail=1
+grep $ctx ed_ctx &&
+  { ls -lZd parents_dest/parents/a; fail=1; }
+
+# Check restorecon (-Z) functionality for file and directory
+# Also make a dir with our known context
+mkdir c_d || framework_failure_
+chcon $ctx c_d || framework_failure_
+# Get the type of this known context for file and dir for tracing
+old_type_f=$(get_selinux_type c)
+old_type_d=$(get_selinux_type c_d)
+# Setup copies for manipulation with restorecon
+# and get the adjusted type for comparison
+cp -a c Z1 || fail=1
+cp -a c_d Z1_d || fail=1
+if restorecon Z1 Z1_d 2>restorecon.err \
+   && compare /dev/null restorecon.err; then
+  new_type_f=$(get_selinux_type Z1)
+  new_type_d=$(get_selinux_type Z1_d)
+
+  # Ensure -Z sets the type like restorecon does
+  cp -Z c Z2 || fail=1
+  cpZ_type_f=$(get_selinux_type Z2)
+  test "$cpZ_type_f" = "$new_type_f" || fail=1
+
+  # Ensure -Z overrides -a and that dirs are handled too
+  cp -aZ c Z3 || fail=1
+  cp -aZ c_d Z3_d || fail=1
+  cpaZ_type_f=$(get_selinux_type Z3)
+  cpaZ_type_d=$(get_selinux_type Z3_d)
+  test "$cpaZ_type_f" = "$new_type_f" || fail=1
+  test "$cpaZ_type_d" = "$new_type_d" || fail=1
+
+  # Ensure -Z sets the type for existing files
+  mkdir -p existing/c_d || framework_failure_
+  touch existing/c || framework_failure_
+  cp -aZ c c_d existing || fail=1
+  cpaZ_type_f=$(get_selinux_type existing/c)
+  cpaZ_type_d=$(get_selinux_type existing/c_d)
+  test "$cpaZ_type_f" = "$new_type_f" || fail=1
+  test "$cpaZ_type_d" = "$new_type_d" || fail=1
+fi
+
+skip=0
+# Create a file system, then mount it with the context=... option.
+dd if=/dev/zero of=blob bs=8192 count=200    || skip=1
+mkdir mnt                                    || skip=1
+mkfs -t ext2 -F blob ||
+  skip_ "failed to create an ext2 file system"
+
+mount -oloop,context=$ctx blob mnt           || skip=1
+test $skip = 1 \
+  && skip_ "insufficient mount/ext2 support"
+
+cd mnt                                       || framework_failure_
+
+# Create files with hopefully different contexts
+echo > ../f                                  || framework_failure_
+echo > g                                     || framework_failure_
+test "$(stat -c%C ../f)" = "$(stat -c%C g)" &&
+  skip_ "files on separate file systems have the same security context"
+
+# /bin/cp from coreutils-6.7-3.fc7 would fail this test by letting cp
+# succeed (giving no diagnostics), yet leaving the destination file empty.
+cp -a ../f g 2>err || fail=1
+test -s g       || fail=1     # The destination file must not be empty.
+compare /dev/null err || fail=1
+
+# =====================================================
+# Here, we expect cp to succeed and not warn with "Operation not supported"
+rm -f g
+echo > g
+cp --preserve=all ../f g 2>err || fail=1
+test -s g || fail=1
+grep "Operation not supported" err && fail=1
+
+# =====================================================
+# The same as above except destination does not exist
+rm -f g
+cp --preserve=all ../f g 2>err || fail=1
+test -s g || fail=1
+grep "Operation not supported" err && fail=1
+
+# An alternative to the following approach would be to run in a confined
+# domain (maybe creating/loading it) that lacks the required permissions
+# to the file type.
+# Note: this test could also be run by a regular (non-root) user in an
+# NFS mounted directory.  When doing that, I get this diagnostic:
+# cp: failed to set the security context of 'g' to 'system_u:object_r:nfs_t': \
+#   Operation not supported
+cat <<\EOF > exp || framework_failure_
+cp: failed to set the security context of
+EOF
+
+rm -f g
+echo > g
+# =====================================================
+# Here, we expect cp to fail, because it cannot set the SELinux
+# security context through NFS or a mount with fixed context.
+cp --preserve=context ../f g 2> out && fail=1
+# Here, we *do* expect the destination to be empty.
+compare /dev/null g || fail=1
+sed "s/ .g'.*//" out > k
+mv k out
+compare exp out || fail=1
+
+rm -f g
+echo > g
+# Check if -a option doesn't silence --preserve=context option diagnostics
+cp -a --preserve=context ../f g 2> out2 && fail=1
+# Here, we *do* expect the destination to be empty.
+compare /dev/null g || fail=1
+sed "s/ .g'.*//" out2 > k
+mv k out2
+compare exp out2 || fail=1
+
+for no_g_cmd in '' 'rm -f g'; do
+  # restorecon equivalent.  Note even though the context
+  # returned from matchpathcon() will not match $ctx
+  # the resulting ENOTSUP warning will be suppressed.
+
+   # With absolute path
+  $no_g_cmd
+  cp -Z ../f $(realpath g) || fail=1
+   # With relative path
+  $no_g_cmd
+  cp -Z ../f g || fail=1
+   # -Z overrides -a
+  $no_g_cmd
+  cp -Z -a ../f g || fail=1
+   # -Z doesn't take an arg
+  $no_g_cmd
+  returns_ 1 cp -Z "$ctx" ../f g || fail=1
+
+  # Explicit context
+  $no_g_cmd
+   # Explicitly defaulting to the global $ctx should work
+  cp --context="$ctx" ../f g || fail=1
+   # --context overrides -a
+  $no_g_cmd
+  cp -a --context="$ctx" ../f g || fail=1
+done
+
+# Mutually exclusive options
+returns_ 1 cp -Z --preserve=context ../f g || fail=1
+returns_ 1 cp --preserve=context -Z ../f g || fail=1
+returns_ 1 cp --preserve=context --context="$ctx" ../f g || fail=1
+
+Exit $fail