1 files changed, 59 insertions, 0 deletions
diff --git a/tests/ls/stat-vs-dirent.sh b/tests/ls/stat-vs-dirent.sh
new file mode 100755
index 0000000..b96a2ba
--- /dev/null
+++ b/tests/ls/stat-vs-dirent.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+# Ensure that d_ino (from ls -di) and st_ino (from stat --format=%i) match.
+
+# Copyright (C) 2006-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ ls
+
+
+root_dev_ino=$(stat --format=%d-%i /)
+t=$(pwd)
+while :; do
+  if ls -i1 "$t" > tmp; then
+    # Extract the inode number from the first line of output from ls -i1.
+    # This value comes from dirent.d_ino, on systems with d_ino support.
+    d_ino=$(sed -n '1s/^ *\([0-9][0-9]*\) .*/\1/p;q' tmp)
+
+    # Extract the name of the corresponding directory entry.
+    file=$(sed -n '1s/^ *[0-9][0-9]* //p;q' tmp)
+
+    # Get its inode number (stat.st_ino) via stat(1)'s call to lstat.
+    st_ino=$(stat --format=%i "$t/$file")
+
+    # Make sure that they are the same.
+    # We know from experience that there may be mismatches on some
+    # buggy file systems, at mount points.
+    # Note that when a directory contains only entries whose names
+    # start with ".", d_ino and file will both be empty.  In that case,
+    # skip the test.
+    if test -n "$d_ino" && test "$d_ino" != "$st_ino"; then
+      echo "$0: test failed: $t/$file: d_ino($d_ino) != st_ino($st_ino)
+        This may indicate a flaw in your kernel or file system implementation.
+        The flaw isn't serious for coreutils, but it might break other tools,
+        so you should report it to your operating system vendor." 1>&2
+
+      fail=1
+      break
+    fi
+  fi
+
+  t=$(cd "$t/.."; pwd)
+  dev_ino=$(stat --format=%d-%i "$t")
+  test $dev_ino = $root_dev_ino && break
+done
+
+Exit $fail