bug#58132: closed (29.0.50; Tramp: not preserving remote chmod attributes when copy)

[GNU bug Tracking System]

Your message dated Mon, 07 Nov 2022 11:40:11 +0100
with message-id <87zgd3m4j8.fsf@gmx.de>
and subject line Re: bug#58132: 29.0.50; Tramp: not preserving remote chmod 
attributes when copy
has caused the debbugs.gnu.org bug report #58132,
regarding 29.0.50; Tramp: not preserving remote chmod attributes when copy
to be marked as done.

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-- 
58132: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=58132
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> --- Begin Message ---
>
>
>
> Subject: 
>
> 29.0.50; Tramp: not preserving remote chmod attributes when copy
>
>
>
>
> Date: 
>
> Wed, 28 Sep 2022 06:25:43 +0300
>
>
>
>
> Normal behavior with local `copy' command is to preserve attributes of
> the destination file, if such file exists.
>
> Normal behavior of ssh/scp is to preserve file attributes of destination
> file if such file exists:
>
> $ ssh stw1 ls -l /home/admin/diff.sql
> -rwxr-xr-x 1 admin admin 6240 Sep 27 20:22 /home/admin/diff.sql
> ~
> $ ls -l diff.sql
> -rw-r--r-- 1 admin admin 6240 Jun 20  2021 diff.sql
> ~
> $ scp diff.sql stw1:~/
> diff.sql                                                          100% 6240    
> 20.6KB/s   00:00    
> ~
> $ ssh stw1 ls -l /home/admin/diff.sql
> -rwxr-xr-x 1 admin admin 6240 Sep 27 20:23 /home/admin/diff.sql
> ~
>
> I have noticed that Tramp transfers file attributes from local file to
> remote file. This causes server errors, as it is out of the habit that
> file attributes on existing file are to be preserved.
>
>
>
> In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
>  version 1.17.6, Xaw3d scroll bars) of 2022-09-16 built on
>  protected.rcdrun.com
> Repository revision: 3c1579697ff03d3991b41ead503211cffac0998f
> Repository branch: master
> Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
> System Description: Parabola GNU/Linux-libre
>
> Configured using:
>  'configure --with-x-toolkit=lucid'
>
> Configured features:
> ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
> JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY
> PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
> WEBP X11 XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB
>
> Important settings:
>   value of $LC_ALL: en_US.UTF-8
>   value of $LANG: de_DE.UTF-8
>   value of $XMODIFIERS: @im=exwm-xim
>   locale-coding-system: utf-8-unix
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
>   tooltip-mode: t
>   global-eldoc-mode: t
>   eldoc-mode: t
>   show-paren-mode: t
>   electric-indent-mode: t
>   mouse-wheel-mode: t
>   tool-bar-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   blink-cursor-mode: t
>   line-number-mode: t
>   indent-tabs-mode: t
>   transient-mark-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>
> Load-path shadows:
> None found.
>
> Features:
> (shadow sort mail-extr emacsbug message mailcap yank-media puny dired
> dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
> epg-config gnus-util text-property-search time-date subr-x mm-decode
> mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
> cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util
> mail-prsvr mail-utils rmc iso-transl tooltip eldoc paren electric
> uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
> term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
> regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
> prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
> timer select scroll-bar mouse jit-lock font-lock syntax font-core
> term/tty-colors frame minibuffer nadvice seq simple cl-generic
> indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
> tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
> romanian slovak czech european ethiopic indian cyrillic chinese
> composite emoji-zwj charscript charprop case-table epa-hook
> jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
> faces cus-face macroexp files window text-properties overlay sha1 md5
> base64 format env code-pages mule custom widget keymap
> hashtable-print-readable backquote threads dbusbind inotify lcms2
> dynamic-setting system-font-setting font-render-setting cairo x-toolkit
> xinput2 x multi-tty make-network-process emacs)
>
> Memory information:
> ((conses 16 39440 9450)
>  (symbols 48 5118 2)
>  (strings 32 14282 1683)
>  (string-bytes 1 402633)
>  (vectors 16 10393)
>  (vector-slots 8 157935 15159)
>  (floats 8 40 15)
>  (intervals 56 275 0)
>  (buffers 1000 12))
>
> -- 
> Jean
>
> Take action in Free Software Foundation campaigns:
> https://www.fsf.org/campaigns
>
> In support of Richard M. Stallman
> https://stallmansupport.org/
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#58132: 29.0.50; Tramp: not preserving remote chmod attributes when copy
>
>
>
>
> Date: 
>
> Mon, 07 Nov 2022 11:40:11 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13)
>
>
>
>
> Michael Albinus <michael.albinus@gmx.de> writes:
>
> Hi Jean,
>
> >> Normal behavior with local `copy' command is to preserve attributes of
> >> the destination file, if such file exists.
> >>
> >> Normal behavior of ssh/scp is to preserve file attributes of destination
> >> file if such file exists:
> >>
> >> $ ssh stw1 ls -l /home/admin/diff.sql
> >> -rwxr-xr-x 1 admin admin 6240 Sep 27 20:22 /home/admin/diff.sql
> >> ~
> >> $ ls -l diff.sql
> >> -rw-r--r-- 1 admin admin 6240 Jun 20  2021 diff.sql
> >> ~
> >> $ scp diff.sql stw1:~/
> >> diff.sql                                                          100% 6240  
> >>   20.6KB/s   00:00
> >> ~
> >> $ ssh stw1 ls -l /home/admin/diff.sql
> >> -rwxr-xr-x 1 admin admin 6240 Sep 27 20:23 /home/admin/diff.sql
> >> ~
> >>
> >> I have noticed that Tramp transfers file attributes from local file to
> >> remote file. This causes server errors, as it is out of the habit that
> >> file attributes on existing file are to be preserved.
> >
> > Tramp does what it is instructed. Copying a file is triggered by the
> > `copy-file' function. If the argument PRESERVE-PERMISSIONS is non-nil,
> > Tramp tries to preserve the permissions. See the docstring of `copy-file':
> >
> > So it isn't an error per se.
>
> No further comment, I'm closing the bug therefore.
>
> Best regards, Michael.
>
>
> --- End Message ---