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authorPaul R. Eggert <eggert@cs.ucla.edu>2010-07-24 00:19:33 -0700
committerPaul Eggert <eggert@cs.ucla.edu>2010-07-24 00:20:07 -0700
commit77428214f13e1d7b81348fd301a388cb4ce8a2a0 (patch)
tree62792ebdfd1e415f65383b52b57c64537836dc6c /tests/du/deref
parent9a3c600f11b254bc601a96ee607129cba69c8029 (diff)
downloadcoreutils-77428214f13e1d7b81348fd301a388cb4ce8a2a0.tar.xz
du: tune, and fix some -L bugs with dangling or cyclic symlinks
* src/du.c (process_file): Avoid recalculation of hashes and of file-exclusion for directories. Do not descend into the same directory more than once, unless -l is given; this is faster. Calculate stat buffer lazily, since it need not be computed at all for excluded files. Count space if FTS_ERR, since stat buffer is always valid then. No need for 'print' local variable. (main): Use FTS_NOSTAT. Use FTS_TIGHT_CYCLE_CHECK only when not hashing everything, since process_file finds cycles on its own when hashing everything. * tests/du/deref: Add test cases for -L bugs.
Diffstat (limited to 'tests/du/deref')
-rwxr-xr-xtests/du/deref16
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/du/deref b/tests/du/deref
index 79737a6bb..8e4feac3b 100755
--- a/tests/du/deref
+++ b/tests/du/deref
@@ -1,6 +1,8 @@
#!/bin/sh
# prior to coreutils-4.5.3, du -D didn't work in some cases
# Based on an example from Andreas Schwab and/or Michal Svec.
+# Also, up to coreutils-8.5, du -L sometimes incorrectly
+# counted the space of the followed symlinks.
# Copyright (C) 2002, 2006-2010 Free Software Foundation, Inc.
@@ -27,10 +29,24 @@ fi
mkdir -p a/sub || framework_failure
ln -s a/sub slink || framework_failure
touch b || framework_failure
+ln -s .. a/sub/dotdot || framework_failure
+ln -s nowhere dangle || framework_failure
# This used to fail with the following diagnostic:
# du: `b': No such file or directory
du -sD slink b > /dev/null 2>&1 || fail=1
+# This used to fail to report the dangling symlink.
+du -L dangle > /dev/null 2>&1 && fail=1
+
+# du -L used to mess up, either by counting the symlink's disk space itself
+# (-L should follow symlinks, not count their space)
+# or (briefly in July 2010) by omitting the entry for "a".
+du_L_output=`du -L a` || fail=1
+du_lL_output=`du -lL a` || fail=1
+du_x_output=`du --exclude=dotdot a` || fail=1
+test "X$du_L_output" = "X$du_x_output" || fail=1
+test "X$du_lL_output" = "X$du_x_output" || fail=1
+
Exit $fail