# allocated file space is zero.
testing "du counts symlinks without following" "du -ks du_test" "8\tdu_test\n" "" ""
testing "du -L follows symlinks" "du -ksL du_test" "16\tdu_test\n" "" ""
+ln -s . du_test/up
+testing "du -L avoid endless loop" "du -ksL du_test" "16\tdu_test\n" "" ""
+rm du_test/up
# if -H and -L are specified, the last takes priority
testing "du -HL follows symlinks" "du -ksHL du_test" "16\tdu_test\n" "" ""
testing "du -H does not follow unspecified symlinks" "du -ksH du_test" "8\tdu_test\n" "" ""
if ((toys.optflags & FLAG_x) && (TT.st_dev != node->st.st_dev))
return 0;
+ // Don't loop endlessly on recursive directory symlink
+ if (toys.optflags & FLAG_L) {
+ struct dirtree *try = node;
+
+ while ((try = try->parent))
+ if (node->st.st_dev==try->st.st_dev && node->st.st_ino==try->st.st_ino)
+ return 0;
+ }
+
// Don't count hard links twice
if (!(toys.optflags & FLAG_l) && !node->again)
if (seen_inode(&TT.inodes, &node->st)) return 0;