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4d1984 |
From 11b37b65d08c2a8b6d967fd866ebbdbe7e864949 Mon Sep 17 00:00:00 2001
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4d1984 |
From: Nishant Nayan <nishant.nayan@oracle.com>
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4d1984 |
Date: Thu, 26 Nov 2020 14:35:17 +0000
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4d1984 |
Subject: [PATCH] rm: do not skip files upon failure to remove an empty dir
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4d1984 |
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4d1984 |
When removing a directory fails for some reason, and that directory
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4d1984 |
is empty, the rm_fts code gets the return value of the excise call
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4d1984 |
confused with the return value of its earlier call to prompt,
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4d1984 |
causing fts_skip_tree to be called again and the next file
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4d1984 |
that rm would otherwise have deleted to survive.
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4d1984 |
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4d1984 |
* src/remove.c (rm_fts): Ensure we only skip a single fts entry,
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4d1984 |
when processing empty dirs. I.e. only skip the entry
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4d1984 |
having successfully removed it.
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4d1984 |
* tests/rm/empty-immutable-skip.sh: New root-only test.
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4d1984 |
* tests/local.mk: Add it.
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4d1984 |
* NEWS: Mention the bug fix.
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4d1984 |
Fixes https://bugs.gnu.org/44883
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4d1984 |
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4d1984 |
Upstream-commit: 6bf108358a6104ec1c694c9530b3cd56b95f4b57
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4d1984 |
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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4d1984 |
---
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4d1984 |
src/remove.c | 3 ++-
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4d1984 |
tests/local.mk | 1 +
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4d1984 |
tests/rm/empty-immutable-skip.sh | 46 ++++++++++++++++++++++++++++++++
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4d1984 |
3 files changed, 49 insertions(+), 1 deletion(-)
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4d1984 |
create mode 100755 tests/rm/empty-immutable-skip.sh
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
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4d1984 |
diff --git a/src/remove.c b/src/remove.c
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4d1984 |
index 2d40c55..adf9489 100644
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4d1984 |
--- a/src/remove.c
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4d1984 |
+++ b/src/remove.c
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4d1984 |
@@ -506,7 +506,8 @@ rm_fts (FTS *fts, FTSENT *ent, struct rm_options const *x)
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4d1984 |
/* When we know (from prompt when in interactive mode)
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4d1984 |
that this is an empty directory, don't prompt twice. */
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4d1984 |
s = excise (fts, ent, x, true);
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4d1984 |
- fts_skip_tree (fts, ent);
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4d1984 |
+ if (s == RM_OK)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+ fts_skip_tree (fts, ent);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
}
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4d1984 |
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4d1984 |
if (s != RM_OK)
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4d1984 |
diff --git a/tests/local.mk b/tests/local.mk
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4d1984 |
index 5f7f775..2aeff2b 100644
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4d1984 |
--- a/tests/local.mk
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4d1984 |
+++ b/tests/local.mk
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4d1984 |
@@ -136,6 +136,7 @@ all_root_tests = \
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4d1984 |
tests/rm/no-give-up.sh \
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4d1984 |
tests/rm/one-file-system.sh \
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4d1984 |
tests/rm/read-only.sh \
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4d1984 |
+ tests/rm/empty-immutable-skip.sh \
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4d1984 |
tests/tail-2/append-only.sh \
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4d1984 |
tests/tail-2/end-of-device.sh \
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4d1984 |
tests/touch/now-owned-by-other.sh
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4d1984 |
diff --git a/tests/rm/empty-immutable-skip.sh b/tests/rm/empty-immutable-skip.sh
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4d1984 |
new file mode 100755
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4d1984 |
index 0000000..c91d8d4
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4d1984 |
--- /dev/null
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4d1984 |
+++ b/tests/rm/empty-immutable-skip.sh
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4d1984 |
@@ -0,0 +1,46 @@
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4d1984 |
+#!/bin/sh
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4d1984 |
+# Ensure that rm does not skip extra files after hitting an empty immutable dir.
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4d1984 |
+# Requires root access to do chattr +i, as well as an ext[23] or xfs file system
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4d1984 |
+
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4d1984 |
+# Copyright (C) 2020 Free Software Foundation, Inc.
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4d1984 |
+
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4d1984 |
+# This program is free software: you can redistribute it and/or modify
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4d1984 |
+# it under the terms of the GNU General Public License as published by
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4d1984 |
+# the Free Software Foundation, either version 3 of the License, or
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4d1984 |
+# (at your option) any later version.
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4d1984 |
+
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4d1984 |
+# This program is distributed in the hope that it will be useful,
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4d1984 |
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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4d1984 |
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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4d1984 |
+# GNU General Public License for more details.
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4d1984 |
+
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4d1984 |
+# You should have received a copy of the GNU General Public License
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4d1984 |
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
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4d1984 |
+
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4d1984 |
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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4d1984 |
+print_ver_ rm
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4d1984 |
+require_root_
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4d1984 |
+
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4d1984 |
+# These simple one-file operations are expected to work even in the
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4d1984 |
+# presence of this bug, and we need them to set up the rest of the test.
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+chattr_i_works=1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+touch f
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4d1984 |
+chattr +i f 2>/dev/null || chattr_i_works=0
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4d1984 |
+rm f 2>/dev/null
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4d1984 |
+test -f f || chattr_i_works=0
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4d1984 |
+chattr -i f 2>/dev/null || chattr_i_works=0
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+rm f 2>/dev/null || chattr_i_works=0
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+test -f f && chattr_i_works=0
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+if test $chattr_i_works = 0; then
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+ skip_ "chattr +i doesn't work on this file system"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+fi
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+mkdir empty || framework_failure_
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+touch x y || framework_failure_
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+chattr +i empty || framework_failure_
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+rm -rf empty x y
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+{ test -f x || test -f y; } && fail=1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+chattr -i empty
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
+Exit $fail
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
--
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
2.26.2
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4d1984 |
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