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bug#19861: 25.0.50; Mac OS X 10.10: tramp fails with "too long for Unix
From: |
David Caldwell |
Subject: |
bug#19861: 25.0.50; Mac OS X 10.10: tramp fails with "too long for Unix domain socket" error |
Date: |
Fri, 13 Feb 2015 19:19:42 -0800 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:34.0) Gecko/20100101 Thunderbird/34.0 |
After invoking with emacs -Q, opening a file with tramp fails with an
error:
unix_listener:
"/var/folders/l9/vwn57w053mzdv_mrtkjqqnj00000gn/T/tramp.91898jdU.david@death.porkrind.org:22.zrNS5blwPkoWXlHh"
too long for Unix domain socket
This error is printed in buffer called "*tramp/scp
david@death.porkrind.org*".
The particular file I was opening was "/david@death.porkrind.org:".
This also fails in Emacs 24.4.
It does not fail in Emacs 24.3. I'm going to try to binary search to
narrow down the problem. Done.
I tracked it to somewhere between 2014-06-13 and 2014-06-06 (I used the
nightly builds at http://emacsformacosx.com/builds/all instead of
building it all myself. The only patch in that area that looks like it
has anything to do with it is a336b2eae3b52f6fba5a19cc98e780feca618115,
but I don't understand why (maybe the regexp wasn't matching before?).
When running as batch I noticed the ControlPath seems to be the
difference with when it works or not. The message when it works:
Tramp: Sending command `exec ssh -l david -o ControlPersist=no -e
none deadth.porkrind.org'
And when it doesn't:
Tramp: Sending command `exec ssh -l david -o
ControlPath=/var/folders/l9/vwn57w053mzdv_mrtkjqqnj00000gn/T/tramp.95670s_p.%r@%h:%p
-o ControlMaster=auto -o ControlPersist=no -e none death.porkrind.org'
I'm running on Mac OS X 10.10 (Yosemite).
Ok. More info: I'm running a locally built version of OpenSSH. My local
version is "OpenSSH_6.7p1, OpenSSL 1.0.2 22 Jan 2015". The system
version is "OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011". When I run the
command listed above with the long control path, the 2 versions act
differently. The locally compiled 6.7p1 version prints:
unix_listener:
"/var/folders/l9/vwn57w053mzdv_mrtkjqqnj00000gn/T/tramp.95670s.david@death.porkrind.org:22.1NyTKIqLDRhV1uyV"
too long for Unix domain socket
...and then exits. The system 6.2p2 version prints:
ControlPath
"/var/folders/l9/vwn57w053mzdv_mrtkjqqnj00000gn/T/tramp.95670s.david@death.porkrind.org:22.92nYwUmCrMTDpjyE"
too long for Unix domain socket
...but then logs me in anyway (presumably without a ControlMaster).
So it looks like Emacs is generating command line paths that are too
long for ssh. New ssh versions treat this as a fatal error but old
versions treat it as a warning.
Shortening the path to just "/tmp/tramp.95670s_p.%r@%h:%p" makes it
work with both ssh versions.
-David
In GNU Emacs 25.0.50.1 (x86_64-apple-darwin13.4.0, NS appkit-1265.21
Version 10.9.5 (Build 13F34))
of 2015-02-11 on builder10-9.porkrind.org
Windowing system distributor `Apple', version 10.3.1344
Configured using:
`configure --with-ns'
Configured features:
ACL LIBXML2 ZLIB
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Fundamental
Minor modes in effect:
shell-dirtrack-mode: t
tooltip-mode: t
global-eldoc-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
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
Recent messages:
Tramp: Sending command `exec ssh -l david -o
ControlPath=/var/folders/l9/vwn57w053mzdv_mrtkjqqnj00000gn/T/tramp.91898lKp.%r@%h:%p
-o ControlMaster=auto -o ControlPersist=no -e none death.porkrind.org'
Tramp: Waiting for prompts from remote shell...
Tramp failed to connect. If this happens repeatedly, try
`M-x tramp-cleanup-this-connection'
Tramp: Waiting for prompts from remote shell...failed
Tramp: Opening connection for david@death.porkrind.org using scp...failed
Use M-x make-directory RET RET to create the directory and its parents
Tramp: Checking `vc-registered' for /david@death.porkrind.org:src...failed
Use M-x make-directory RET RET to create the directory and its parents
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message dired rfc822 mml easymenu
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils
tramp-cmds tramp-cache tramp-sh tramp tramp-compat auth-source cl-macs
eieio byte-opt gv bytecomp byte-compile cl-extra seq cconv eieio-core
cl-generic pcase cl-loaddefs cl-lib gnus-util mm-util mail-prsvr
password-cache tramp-loaddefs trampver shell pcomplete comint ansi-color
ring format-spec advice help-fns time-date tooltip eldoc electric
uniquify ediff-hook vc-hooks lisp-float-type mwheel ns-win tool-bar dnd
fontset image regexp-opt fringe tabulated-list newcomment elisp-mode
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer cl-preloaded nadvice loaddefs button faces cus-face
macroexp files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
make-network-process cocoa ns multi-tty emacs)
Memory information:
((conses 16 99123 6609)
(symbols 48 21209 0)
(miscs 40 40 146)
(strings 32 22684 4534)
(string-bytes 1 692575)
(vectors 16 14182)
(vector-slots 8 427442 3799)
(floats 8 117 335)
(intervals 56 175 101)
(buffers 976 12))
smime.p7s
Description: S/MIME Cryptographic Signature
- bug#19861: 25.0.50; Mac OS X 10.10: tramp fails with "too long for Unix domain socket" error,
David Caldwell <=