scp return codes are random
From: Sam Robertson (samr_at_proofpoint.com)
Date: 11/23/03
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Date: Sat, 22 Nov 2003 21:11:40 -0800 To: secureshell@securityfocus.com
I'm using openssh-3.7.1p2 on one machine and connecting to a Solaris 9
system running Sun_SSH_1.0. I'm really not quite sure which version of
OpenSSH this is or if it's even OpenSSH anymore.
Anyway, I've tried the following with 3.7p1, 3.5p1, 3.7.1p2 and have
the same results in all cases.
Using the following test program
---
cmd="/workdir/openssh-3.7.1p2/bin/scp -oProtocol=2 -q -S
/workdir/openssh-3.7.1p2/bin/ssh -B /etc/passwd startrek1:/tmp"
${cmd}
echo "Returned: $?"
---
So when I run this in a simple while loop and even ensure that the
remote file is removed from /tmp, I get random return codes:
---
[startrek2]$ while /bin/true ; do sleep 1 ;
/workdir/openssh-3.7.1p2/bin/ssh -2 startrek1 "rm -f /tmp/passwd" ;
./scptest.sh ; done
Returned: 1
Returned: 1
Returned: 1
Returned: 0
Returned: 1
Returned: 1
---
I can't for the life of me figure out why this is happening. Running
scp with -v and diffing a successful run with an unsuccessful run
results in:
---
[startrek2]$ diff -u bad-result good-result
--- results Sat Nov 22 20:00:58 2003
+++ results2 Sat Nov 22 20:01:06 2003
@@ -37,6 +37,7 @@
debug1: Entering interactive session.
debug1: Sending command: scp -v -t /tmp/passwd
Sending file modes: C0644 6918 passwd
+debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: free: client-session, nchannels 1
debug1: fd 0 clearing O_NONBLOCK
debug1: fd 1 clearing O_NONBLOCK
@@ -43,5 +44,5 @@
debug1: fd 2 clearing O_NONBLOCK
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.1 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
-debug1: Exit status -1
-Cmd returned: 256 256
+debug1: Exit status 0
+Cmd returned: 0 0
---
So is there something I'm missing or is this a client & server mis-match
problem? Additionally, I'm not seeing this under Linux, it seems to
manifest itself only with connecting to the default installed SSH client
that comes with Solaris 9.
Sam
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