1 files changed, 49 insertions, 0 deletions
diff --git a/tests/ln/sf-1.sh b/tests/ln/sf-1.sh
new file mode 100755
index 0000000..ce409e0
--- /dev/null
+++ b/tests/ln/sf-1.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+# Test "ln -sf".
+
+# Copyright (C) 1997-2020 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_ ln
+
+echo foo > a || framework_failure_
+
+# Check that a target directory of '.' is supported
+# and that indirectly specifying the same target and link name
+# through that is detected.
+ln -s . b || framework_failure_
+ln -sf a b > err 2>&1 && fail=1
+case $(cat err) in
+  *'are the same file') ;;
+  *) fail=1 ;;
+esac
+
+# Ensure we replace symlinks that don't or can't link to an existing target.
+# coreutils-8.22 would fail to replace {ENOTDIR,ELOOP,ENAMETOOLONG}_link below.
+# We apply a limit since AIX returns 2^32-1 which would trigger resource issues.
+name_max=$(stat -f -c %l .) && test "$name_max" -lt $((1024*1024)) ||
+  name_max=1 # skip this portion of the test
+name_max_plus1=$(expr $name_max + 1)
+long_name=$(printf '%*s' $name_max_plus1 | tr ' ' '0')
+
+for f in '' f; do
+  ln -s$f missing ENOENT_link || fail=1
+  ln -s$f a/b ENOTDIR_link || fail=1
+  ln -s$f ELOOP_link ELOOP_link || fail=1
+  ln -s$f "$long_name" ENAMETOOLONG_link || fail=1
+done
+
+Exit $fail