From: Thierry Volpiatto <thierry.volpiatto@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: 10489@debbugs.gnu.org, Michael Albinus <michael.albinus@gmx.de>
Subject: bug#10489: 24.0.92; dired-do-copy may create infinite directory hierarchy
Date: Thu, 23 Feb 2012 23:10:18 +0100 [thread overview]
Message-ID: <874nuhxktx.fsf@gmail.com> (raw)
In-Reply-To: <jwv39a1sc8e.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Thu, 23 Feb 2012 12:18:51 -0500")
[-- Attachment #1: Type: text/plain, Size: 869 bytes --]
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>> Here a first shot of `copy-directory', with the first check disabled
>> (file-subdir-of-p) to test the detection of the inf-loop, can you have a
>> look?
>
> I think we can install the file-subdir-of-p test now and leave the rest
> for 24.2. Can you (re)send the corresponding patch? Note that
> (or (files-equal-p directory newname)
> (file-subdir-of-p newname directory))
> should be replaced by just (file-subdir-of-p newname directory), because
> this primitive should be a "⊆" rather than "⊂".
Done, you should have received the patch.
>
> I always prefer a patch rather than the resulting code, so I don't have
> to look for the source code to see what's changed.
Ok, here the patch for only `copy-directory' with the check by
`file-subdir-of-p' disabled for testing purpose.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: copy-directory --]
[-- Type: text/x-diff, Size: 6175 bytes --]
##Merge of all patches applied from revision 118951
## patch-r118952: Return Error when trying to copy a directory on itself.
## patch-r118953: * lisp/files.el (copy-directory): Improve error message.
##
diff --git a/lisp/files.el b/lisp/files.el
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -4935,6 +4935,7 @@
(equal (file-attributes (file-truename root))
(file-attributes f2))))))
+(defvar copy-directory-newdir-inode nil)
(defun copy-directory (directory newname &optional keep-time parents copy-contents)
"Copy DIRECTORY to NEWNAME. Both args must be strings.
This function always sets the file modes of the output files to match
@@ -4961,54 +4962,63 @@
(format "Copy directory %s to: " dir)
default-directory default-directory nil nil)
current-prefix-arg t nil)))
- (when (file-subdir-of-p newname directory)
- (error "Can't copy directory `%s' on itself" directory))
+ ;; (when (file-subdir-of-p newname directory)
+ ;; (error "Can't copy directory `%s' on itself" directory))
;; If default-directory is a remote directory, make sure we find its
;; copy-directory handler.
- (let ((handler (or (find-file-name-handler directory 'copy-directory)
- (find-file-name-handler newname 'copy-directory))))
- (if handler
- (funcall handler 'copy-directory directory newname keep-time parents)
-
- ;; Compute target name.
- (setq directory (directory-file-name (expand-file-name directory))
- newname (directory-file-name (expand-file-name newname)))
-
- (cond ((not (file-directory-p newname))
- ;; If NEWNAME is not an existing directory, create it;
- ;; that is where we will copy the files of DIRECTORY.
- (make-directory newname parents))
- ;; If NEWNAME is an existing directory and COPY-CONTENTS
- ;; is nil, copy into NEWNAME/[DIRECTORY-BASENAME].
- ((not copy-contents)
- (setq newname (expand-file-name
- (file-name-nondirectory
- (directory-file-name directory))
- newname))
- (and (file-exists-p newname)
- (not (file-directory-p newname))
- (error "Cannot overwrite non-directory %s with a directory"
- newname))
- (make-directory newname t)))
-
- ;; Copy recursively.
- (dolist (file
- ;; We do not want to copy "." and "..".
- (directory-files directory 'full
- directory-files-no-dot-files-regexp))
- (if (file-directory-p file)
- (copy-directory file newname keep-time parents)
- (let ((target (expand-file-name (file-name-nondirectory file) newname))
- (attrs (file-attributes file)))
- (if (stringp (car attrs)) ; Symbolic link
- (make-symbolic-link (car attrs) target t)
- (copy-file file target t keep-time)))))
-
- ;; Set directory attributes.
- (let ((modes (file-modes directory))
- (times (and keep-time (nth 5 (file-attributes directory)))))
- (if modes (set-file-modes newname modes))
- (if times (set-file-times newname times))))))
+ (unwind-protect
+ (let ((handler (or (find-file-name-handler directory 'copy-directory)
+ (find-file-name-handler newname 'copy-directory))))
+ (if handler
+ (funcall handler 'copy-directory directory newname keep-time parents)
+
+ ;; Compute target name.
+ (setq directory (file-truename (directory-file-name (expand-file-name directory)))
+ newname (file-truename (directory-file-name (expand-file-name newname))))
+ (cond ((not (file-directory-p newname))
+ ;; If NEWNAME is not an existing directory, create it;
+ ;; that is where we will copy the files of DIRECTORY.
+ (make-directory newname parents))
+ ;; If NEWNAME is an existing directory and COPY-CONTENTS
+ ;; is nil, copy into NEWNAME/[DIRECTORY-BASENAME].
+ ((not copy-contents)
+ (setq newname (expand-file-name
+ (file-name-nondirectory
+ (directory-file-name directory))
+ newname))
+
+ (and (file-exists-p newname)
+ (not (file-directory-p newname))
+ (error "Cannot overwrite non-directory %s with a directory"
+ newname))
+ (make-directory newname t)
+ (unless copy-directory-newdir-inode
+ (setq copy-directory-newdir-inode (nth 10 (file-attributes newname))))))
+
+ ;; Copy recursively.
+ (dolist (file
+ ;; We do not want to copy "." and "..".
+ (directory-files directory 'full
+ directory-files-no-dot-files-regexp))
+ (assert (not (equal (nth 10 (file-attributes file))
+ copy-directory-newdir-inode))
+ nil "Unable to create directory `%s' in itself `%s'"
+ (file-name-nondirectory (directory-file-name file))
+ (file-name-directory (directory-file-name newname)))
+ (if (file-directory-p file)
+ (copy-directory file newname keep-time parents)
+ (let ((target (expand-file-name (file-name-nondirectory file) newname))
+ (attrs (file-attributes file)))
+ (if (stringp (car attrs)) ; Symbolic link
+ (make-symbolic-link (car attrs) target t)
+ (copy-file file target t keep-time)))))
+
+ ;; Set directory attributes.
+ (let ((modes (file-modes directory))
+ (times (and keep-time (nth 5 (file-attributes directory)))))
+ (if modes (set-file-modes newname modes))
+ (if times (set-file-times newname times)))))
+ (setq copy-directory-newdir-inode nil)))
\f
(put 'revert-buffer-function 'permanent-local t)
(defvar revert-buffer-function nil
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--
Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997
next prev parent reply other threads:[~2012-02-23 22:10 UTC|newest]
Thread overview: 174+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-12 19:35 bug#10489: 24.0.92; dired-do-copy may create infinite directory hierarchy Michael Heerdegen
2012-01-12 21:33 ` Thierry Volpiatto
2012-01-13 7:23 ` Eli Zaretskii
2012-01-13 8:38 ` Thierry Volpiatto
2012-01-13 10:31 ` Eli Zaretskii
2012-01-13 11:19 ` Thierry Volpiatto
2012-01-13 12:01 ` Juanma Barranquero
2012-01-13 12:41 ` Eli Zaretskii
2012-01-13 13:01 ` Michael Albinus
2012-01-13 13:11 ` Juanma Barranquero
2012-01-13 13:13 ` Juanma Barranquero
2012-01-13 13:18 ` Juanma Barranquero
2012-01-13 13:32 ` Michael Albinus
2012-01-13 13:27 ` Stefan Monnier
2012-01-13 14:06 ` Thierry Volpiatto
2012-01-13 14:44 ` Michael Albinus
2012-01-13 15:13 ` Stefan Monnier
2012-01-13 15:17 ` Juanma Barranquero
2012-01-13 15:29 ` Michael Albinus
2012-01-13 16:59 ` Drew Adams
2012-01-13 9:38 ` Thierry Volpiatto
2012-01-13 9:49 ` Michael Albinus
2012-01-13 11:00 ` Thierry Volpiatto
2012-01-13 12:48 ` Michael Albinus
2012-01-13 13:55 ` Thierry Volpiatto
2012-01-13 14:14 ` Drew Adams
2012-01-13 15:06 ` Juanma Barranquero
2012-01-13 15:14 ` Michael Albinus
2012-01-13 18:43 ` Thierry Volpiatto
2012-01-13 18:57 ` Drew Adams
2012-01-13 19:11 ` Thierry Volpiatto
2012-01-13 19:21 ` Drew Adams
2012-01-13 19:35 ` Michael Albinus
2012-01-13 20:56 ` Drew Adams
2012-01-13 18:59 ` Thierry Volpiatto
2012-01-13 19:04 ` Michael Albinus
2012-01-13 19:17 ` Thierry Volpiatto
2012-01-14 8:00 ` Eli Zaretskii
2012-01-14 10:25 ` Thierry Volpiatto
2012-01-15 12:50 ` Michael Albinus
2012-01-15 17:20 ` Thierry Volpiatto
2012-01-15 17:31 ` Thierry Volpiatto
2012-01-15 18:24 ` Michael Albinus
2012-01-15 19:09 ` Thierry Volpiatto
2012-01-15 19:49 ` Michael Albinus
2012-01-15 21:01 ` Thierry Volpiatto
2012-01-16 8:58 ` Thierry Volpiatto
2012-01-16 13:56 ` Stefan Monnier
2012-01-16 14:13 ` Michael Albinus
2012-01-16 15:18 ` Stefan Monnier
2012-01-16 15:27 ` Michael Albinus
2012-01-16 21:40 ` Stefan Monnier
2012-02-21 16:53 ` Thierry Volpiatto
2012-02-21 17:59 ` Stefan Monnier
2012-02-21 19:46 ` Michael Albinus
2012-02-21 20:58 ` Thierry Volpiatto
2012-02-21 22:51 ` Stefan Monnier
2012-02-22 21:37 ` Thierry Volpiatto
2012-02-22 22:00 ` Stefan Monnier
2012-02-23 6:15 ` Thierry Volpiatto
2012-02-23 16:01 ` Thierry Volpiatto
2012-02-23 17:18 ` Stefan Monnier
2012-02-23 22:10 ` Thierry Volpiatto [this message]
2012-02-24 5:37 ` Thierry Volpiatto
2012-02-24 7:16 ` Thierry Volpiatto
2012-02-24 9:19 ` Eli Zaretskii
2012-02-24 9:49 ` Thierry Volpiatto
2012-02-24 12:18 ` Thierry Volpiatto
2012-02-24 12:54 ` Michael Albinus
2012-02-24 13:36 ` Thierry Volpiatto
2012-02-24 15:00 ` Michael Albinus
2012-02-24 14:33 ` Eli Zaretskii
2012-02-24 15:19 ` Michael Albinus
2012-02-24 19:42 ` Eli Zaretskii
2012-02-24 20:35 ` Michael Albinus
2012-02-25 6:21 ` Eli Zaretskii
2012-02-27 8:39 ` Michael Albinus
2012-02-27 17:40 ` Eli Zaretskii
2012-02-24 14:45 ` Thierry Volpiatto
2012-02-24 15:23 ` Michael Albinus
2012-02-24 14:39 ` Eli Zaretskii
2012-02-24 14:50 ` Thierry Volpiatto
2012-02-24 15:26 ` Michael Albinus
2012-02-24 15:52 ` Thierry Volpiatto
2012-02-24 16:17 ` Michael Albinus
2012-02-24 16:02 ` Thierry Volpiatto
2012-02-24 16:15 ` Drew Adams
2012-02-24 16:25 ` Michael Albinus
2012-02-24 16:42 ` Drew Adams
2012-02-24 17:04 ` Michael Albinus
2012-02-24 16:21 ` Michael Albinus
2012-02-24 17:23 ` Thierry Volpiatto
2012-02-24 18:43 ` Michael Albinus
2012-02-24 20:06 ` Thierry Volpiatto
2012-02-24 20:04 ` Eli Zaretskii
2012-02-24 20:33 ` Michael Albinus
2012-02-24 21:54 ` Thierry Volpiatto
2012-02-25 8:56 ` Michael Albinus
2012-02-25 9:08 ` Thierry Volpiatto
2012-02-26 9:48 ` Michael Albinus
2012-02-26 19:48 ` Thierry Volpiatto
2012-02-26 21:40 ` Stefan Monnier
2012-02-27 6:45 ` Thierry Volpiatto
2012-02-27 7:45 ` Stefan Monnier
2012-02-27 8:04 ` Thierry Volpiatto
2012-02-27 10:34 ` Stefan Monnier
2012-02-27 11:06 ` Thierry Volpiatto
2012-02-27 11:10 ` Michael Albinus
2012-02-27 11:34 ` Thierry Volpiatto
2012-02-27 13:24 ` Stefan Monnier
2012-02-27 14:59 ` Thierry Volpiatto
2012-02-27 17:38 ` Stefan Monnier
2012-02-27 18:34 ` Thierry Volpiatto
2012-02-27 19:08 ` Michael Albinus
2012-02-27 19:33 ` Thierry Volpiatto
2012-02-27 19:49 ` Michael Albinus
2012-02-27 21:58 ` Stefan Monnier
2012-02-27 22:11 ` Thierry Volpiatto
2012-02-28 6:12 ` Thierry Volpiatto
2012-02-28 7:14 ` Thierry Volpiatto
2012-02-28 7:34 ` Michael Albinus
2012-02-28 8:15 ` Thierry Volpiatto
2012-02-28 8:31 ` Michael Albinus
2012-02-28 9:34 ` Thierry Volpiatto
2012-02-28 10:15 ` Michael Albinus
2012-02-28 19:29 ` Stefan Monnier
2012-02-28 19:53 ` Michael Albinus
2012-02-29 2:01 ` Stefan Monnier
2012-02-29 11:04 ` Michael Albinus
2012-02-29 16:48 ` Stefan Monnier
2012-02-29 17:52 ` Thierry Volpiatto
2012-03-01 2:33 ` Stefan Monnier
2012-03-01 8:37 ` Michael Albinus
2012-02-27 10:40 ` Thierry Volpiatto
2012-02-27 11:03 ` Michael Albinus
2012-02-27 11:29 ` Thierry Volpiatto
2012-02-27 14:19 ` Drew Adams
2012-02-27 13:54 ` Chong Yidong
2012-02-27 15:15 ` Thierry Volpiatto
2012-02-25 7:05 ` Eli Zaretskii
2012-02-25 9:56 ` Stefan Monnier
2012-02-25 13:05 ` Michael Albinus
2012-02-25 15:36 ` Michael Albinus
2012-02-25 15:53 ` Thierry Volpiatto
2012-02-25 22:41 ` Stefan Monnier
2012-02-26 9:21 ` Michael Albinus
2012-02-26 21:38 ` Stefan Monnier
2012-02-27 8:19 ` Michael Albinus
2012-02-27 10:39 ` Stefan Monnier
2012-02-25 13:03 ` Michael Albinus
2012-02-25 14:35 ` Stefan Monnier
2012-02-25 14:56 ` Lennart Borgman
2012-02-21 19:43 ` Michael Albinus
2012-02-21 21:03 ` Thierry Volpiatto
2012-01-16 14:09 ` Andreas Schwab
2012-01-16 19:14 ` Thierry Volpiatto
2012-01-17 6:06 ` Thierry Volpiatto
2012-01-21 13:01 ` Thierry Volpiatto
2012-01-21 16:02 ` Thierry Volpiatto
2012-01-13 19:43 ` Stefan Monnier
2012-01-13 22:51 ` Michael Albinus
2012-01-14 1:55 ` Stefan Monnier
2012-01-14 8:59 ` Eli Zaretskii
2012-01-14 14:19 ` Stefan Monnier
2012-01-14 15:55 ` Eli Zaretskii
2012-01-15 5:59 ` Thierry Volpiatto
2012-01-15 12:40 ` Michael Albinus
2012-01-15 17:28 ` Thierry Volpiatto
2012-01-13 15:31 ` Drew Adams
2012-01-13 15:41 ` Eli Zaretskii
2012-01-13 16:56 ` Drew Adams
2012-01-15 18:42 ` Drew Adams
2012-01-13 10:32 ` Eli Zaretskii
2012-03-22 2:18 ` Michael Heerdegen
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