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From: "Jason Pyeron" <jpyeron AT pdinc DOT us>
To: <cygwin AT cygwin DOT com>
References: <062b01d5d493$71400640$53c012c0$@pdinc.us> <5E2ED10B DOT 6050601 AT tlinx DOT org>
In-Reply-To:
Subject: RE: git on mounted CIFS is it Git or Cygwin
Date: Wed, 29 Jan 2020 22:18:50 -0500
Message-ID: <044a01d5d71b$fe995c50$fbcc14f0$@pdinc.us>
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I have added the ll and lsacl output.

Note the lsacl died on the mounted folder, but was fine on /tmp/

> -----Original Message-----
> From: Jason Pyeron <jpyeron AT pdinc DOT us>
> Sent: Tuesday, January 28, 2020 5:57 PM
> To: 'cygwin AT cygwin DOT com' <cygwin AT cygwin DOT com>
> Subject: RE: git on mounted CIFS is it Git or Cygwin
> 
> > -----Original Message-----
> > From: L A Walsh
> > Sent: Monday, January 27, 2020 7:01 AM
> >
> 
> Sorry for the delay in the follow up test, it took me some time to get back to the system.
> 
> > On 2020/01/26 13:56, Jason Pyeron wrote:
> > > I have an issue with git in Cygwin on windows shares - this is recent
> > > (worked months ago).
> > >
> >     Just to be clear, you are running 'git' on Cygwin and not on linux
> > or some other OS?  There is a 'git' that runs on window natively.  Have
> 
> Yes - Cygwin packaged git, as the cygcheck output indicated below. And indeed the files are on a
> \\server\share with a corresponding fstab entry.
> 
> Cannot use other applications - not approved. I worked hard to get Cygwin approved on DoD computers.
> 
> <snip/>
> 
> >     My first guess was something in git had changed, but in writing this
> > out,
> > I think it more likely that it has something to do with 1) your umask
> > settings
> > being set overly restrictively.  Created a testdir w/no acls on it.  By
> > default
> > it had acls on my system:
> >
> > >  cd /tmp;
> > >  mkdir testdir
> > >  lsacl testdir
> > [u::rwx,g::rwx,g:Untrusted:r-x,m::rwx,o::rwx/u::rwx,g::rwx,g:Untrusted:r-x,m::rwx,o::rwx]

$ cd REDACTED_CWD/objects/pack/

$ lsacl .
getfacl: .: Not supported

getfacl: .: Not supported

[/] .

$ lsacl /tmp/
[u::rwx,g::rwx,o::rwx/u::rwx,g::r-x,o::r-x] /tmp/



> > testdir
> > # of note: my system created those acls by defaults setup on my system.
> > # Simply creating a directory anywhere on my system will likely have some
> > # ACL's applied by default
> > # so for this test, I removed them:
> > >  chacl -B testdir
> > >  lsacl testdir
> > [u::rwx,g::rwx,o::rwx] testdir
> >
> > # above acl corresponds to:
> > >  ll -da testdir
> 

$ ls -l -gG . | grep -v pack-
total 1183488
-r--r--r-- 1         12 Jan 28 17:27 tmp_pack_kxvLWs
-rw-r--r-- 1          0 Jan 28 17:28 tmp_test_mktemp_ZwIIZw
-rw-r--r-- 1          0 Jan 28 17:27 tmp_test_touch_sdfsdfsdf

> lsacl and ll tools are not available on my system. They do not appear to be for Cygwin at all
> https://cygwin.com/cgi-bin2/package-grep.cgi?grep=bin%2Fll.exe&arch=x86_64 and https://cygwin.com/cgi-
> bin2/package-grep.cgi?grep=bin%2Flsacl.exe&arch=x86_64
> 
> > drwxrwxrwx 2 36 Jan 27 03:34 testdir/
> > (user, group and other all have full access)  That was with a umask of 0.
> > Then I created 3 files with my umask set to different settings:
> > >  umask 0; touch u0
> > >  umask 02; touch u02
> > >  umask 0377; touch u377
> > #looking at permission settings:
> > >  ll testdir
> > total 0
> > -rw-rw-rw- 1 0 Jan 27 03:33 u0
> > -rw-rw-r-- 1 0 Jan 27 03:33 u02
> > -r-------- 1 0 Jan 27 03:34 u377
> > # Note the last case, gave the user read-only access and nothing
> > to group and other.  So something that changed the umask could
> > duplicate your symptoms.
> >
> > So a setting in 'git' might have changed to change the bits
> > in the permissions or in the umask (aside from something changing your
> > default umask value).
> 
> #bare repo
> 
> $ umask
> 0022
> 
> $ git fetch
> remote: Counting objects: 410, done.
> fatal: write error: Permission denied
> fatal: index-pack failed
> 
> $ dir objects/pack/*tmp*
> -r--r--r-- 1 XXXXXXXXXXXXXXXXUSER GROUPXXXXXXXXXXXXXXX 12 Jan 28 17:27 objects/pack/tmp_pack_kxvLWs
> 
> $ touch objects/pack/tmp_test_touch_sdfsdfsdf
> 
> $ mktemp -p objects/pack/ tmp_test_mktemp_XXXXXX
> objects/pack/tmp_test_mktemp_ZwIIZw
> 
> $ dir objects/pack/*tmp*
> -r--r--r-- 1 XXXXXXXXXXXXXXXXUSER GROUPXXXXXXXXXXXXXXX 12 Jan 28 17:27 objects/pack/tmp_pack_kxvLWs
> -rw-r--r-- 1 XXXXXXXXXXXXXXXXUSER GROUPXXXXXXXXXXXXXXX  0 Jan 28 17:28
> objects/pack/tmp_test_mktemp_ZwIIZw
> -rw-r--r-- 1 XXXXXXXXXXXXXXXXUSER GROUPXXXXXXXXXXXXXXX  0 Jan 28 17:27
> objects/pack/tmp_test_touch_sdfsdfsdf
> 
> 
> >     Possibly using 'strace' would allow you to see how or why
> > the file is created with the wrong permissions.
> 
> I can strace /bin/echo - so it is possible to do that, but it is the pack sub command, I will have to
> ponder on how to strace the sub process.
> 
> >
> >     Also, if you really are working on a network disk -- how you mount
> > and how the disk is exported can also set default permissions and
> 
> $ cat /etc/fstab | grep -v ^#
> 
> none /cygdrive cygdrive binary,posix=0,user 0 0
> //host/share/   /mnt/XXXXXXXX/ ntfs binary,notexec,noacl,user 1 1
> 
> $ mount
> //host/share on /mnt/XXXXXXXX type hgfs (binary,notexec,noacl,user)
> C:/cygwin64/bin on /usr/bin type ntfs (binary,auto)
> C:/cygwin64/lib on /usr/lib type ntfs (binary,auto)
> C:/cygwin64 on / type ntfs (binary,auto)
> B: on /cygdrive/b type hgfs (binary,posix=0,user,noumount,auto)
> C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)
> Z: on /cygdrive/z type hgfs (binary,posix=0,user,noumount,auto)
> 
> 
> > umask effects.  There can be ALOT of things that could be causing
> > your problem, BUT, the simplest, and easiest to break w/o knowing
> > it, would be something changing somethign like the umask or default
> > permissions on the directory (i.e. the same symptom could be created
> > by ACLs).
> 
> Touch and mktemp are not impacted, so why is git (pushing away from strace for now, trying logical
> discussion first)
> 
> >
> > Hope this gives you some ideas on what to check -- if lucky
> > it's an easy find, if not, well, could take alot more investigation.
> >
> > good luck!
> > Linda
> >
> > > Renaming the file works in either case.
> > >
> > > What I need help in is determining if this is a bug or a special case of
> > > mounting a windows share? Is this a Cygwin issue or a git issue?
> > > Performing the fetch on the local file system has no issues.
> > >
> > > I have updated Cygwin as of a few hours ago, no changes in behavior. What
> > > else can I provide to debug this better? Should this move over to the git
> > > mailing list?
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ GIT_TRACE=true git fetch REDACTED_REMOTENAME
> > > 13:31:59.678749 git.c:344               trace: built-in: git fetch
> > > REDACTED_REMOTENAME
> > > 13:32:03.393302 run-command.c:640       trace: run_command: unset GIT_DIR
> > > GIT_PREFIX; ssh REDACTED_USER2NAME AT REDACTED_HOST2NAME 'git-upload-pack
> > > '\''REDACTED_REPO2PATH'\'''
> > > 13:32:18.448798 run-command.c:640       trace: run_command: git
> > > rev-list --objects --stdin --not --all --quiet
> > > remote: Counting objects: 315, done.
> > > 13:32:26.217550 run-command.c:640       trace: run_command: git
> > > index-pack --stdin -v --fix-thin '--keep=fetch-pack 2039 on
> > > REDACTED_HOSTNAME' --pack_header=2,315
> > > 13:32:31.645732 git.c:344               trace: built-in: git
> > > index-pack --stdin -v --fix-thin '--keep=fetch-pack 2039 on
> > > REDACTED_HOSTNAME' --pack_header=2,315
> > > fatal: write error: Permission denied
> > > fatal: index-pack failed
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ mktemp -p REDACTED_CWD/objects/pack/ tmp_test_XXXXX
> > > REDACTED_CWD/objects/pack/tmp_test_sdTdk
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ dir REDACTED_CWD/objects/pack/
> > > ...
> > > -r--r--r-- 1 REDACTED_USERNAME REDACTED_GROUPNAME         12 Jan 26 13:27
> > > tmp_pack_dxknyW
> > > -r--r--r-- 1 REDACTED_USERNAME REDACTED_GROUPNAME         12 Jan 26 12:52
> > > tmp_pack_FPEnsr
> > > -r--r--r-- 1 REDACTED_USERNAME REDACTED_GROUPNAME         12 Jan 26 13:32
> > > tmp_pack_tpiIGW
> > > -rw-r--r-- 1 REDACTED_USERNAME REDACTED_GROUPNAME          0 Jan 26 13:29
> > > tmp_test_sdTdk
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ mv REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > > REDACTED_CWD/objects/pack/tmp_pack_tpiIGW.mv
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ mv REDACTED_CWD/objects/pack/tmp_pack_tpiIGW.mv
> > > REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ hexdump.exe -C REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > > 00000000  50 41 43 4b 00 00 00 02  00 00 01 3b              |PACK.......;|
> > > 0000000c
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ echo test >> REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > > -bash: REDACTED_CWD/objects/pack/tmp_pack_tpiIGW: Permission denied
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ chmod +w REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ echo test >> REDACTED_CWD/objects/pack/tmp_pack_tpiIGW
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ GIT_TRACE_PACK_ACCESS=true GIT_TRACE_PACKET=true
> > > GIT_TRACE_PERFORMANCE=true GIT_TRACE_SETUP=true GIT_TRACE=true git fetch
> > > REDACTED_REMOTENAME
> > > ...
> > > 15:00:00.303534 pkt-line.c:80           packet:        fetch> have
> > > 1997703e1a01d311e54c32ece1776795209e61e1
> > > 15:00:00.306043 pkt-line.c:80           packet:        fetch> 0000
> > > 15:00:00.312236 pkt-line.c:80           packet:        fetch< NAK
> > > 15:00:00.317800 pkt-line.c:80           packet:        fetch> done
> > > 15:00:00.550242 pkt-line.c:80           packet:        fetch< NAK
> > > 15:00:00.555607 pkt-line.c:80           packet:        fetch< ACK
> > > 3466429b2926acc6e9e2d3c4c1c9ef86d2c82860
> > > 15:00:04.088156 pkt-line.c:80           packet:     sideband< \2Counting
> > > objects: 321, done.
> > > remote: Counting objects: 321, done.
> > > 15:00:04.791067 pkt-line.c:80           packet:     sideband< PACK ...
> > > 15:00:04.829401 run-command.c:643       trace: run_command: git
> > > index-pack --stdin -v --fix-thin '--keep=fetch-pack 1706 on
> > > REDACTED_HOSTNAME' --pack_header=2,321
> > > 15:00:17.109869 trace.c:377             setup: git_dir: .
> > > 15:00:17.112705 trace.c:378             setup: git_common_dir: .
> > > 15:00:17.114454 trace.c:379             setup: worktree: (null)
> > > 15:00:17.116820 trace.c:380             setup: cwd: REDACTED_CWD
> > > 15:00:17.118969 trace.c:381             setup: prefix: (null)
> > > 15:00:17.123794 git.c:419               trace: built-in: git
> > > index-pack --stdin -v --fix-thin '--keep=fetch-pack 1706 on
> > > REDACTED_HOSTNAME' --pack_header=2,321
> > > 15:00:19.063715 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 22055
> > > 15:00:19.147310 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 22214
> > > 15:00:19.160865 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 22375
> > > 15:00:19.264012 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 22578
> > > 15:00:19.268455 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 23505
> > > 15:00:19.318936 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 23706
> > > 15:00:19.326812 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 24045
> > > 15:00:19.335579 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 149489
> > > 15:00:19.447526 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 182724
> > > 15:00:19.452150 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 182883
> > > 15:00:19.456088 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 183044
> > > 15:00:19.571515 packfile.c:1592
> > > ./objects/pack/pack-1ed0c0228d9db2201f0445b87af08494b0b29465.pack 183202
> > > fatal: write error: Permission denied
> > > 15:00:19.595784 trace.c:477             performance: 2.565797600 s: git
> > > command: /usr/libexec/git-core/git index-pack --stdin -v --fix-thin
> > > '--keep=fetch-pack 1706 on REDACTED_HOSTNAME' --pack_header=2,321
> > > fatal: index-pack failed
> > > 15:00:19.617599 trace.c:477             performance: 78.536082300 s: git
> > > command: git fetch REDACTED_REMOTENAME
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ mount
> > > REDACTED_SHARENAME/REDACTED_REPOPATH on /tmp/foo3 type hgfs
> > > (binary,notexec,noacl,user)
> > > REDACTED_SHARENAME/REDACTED_REPOPATH on /tmp/foo2 type hgfs
> > > (binary,notexec,user)
> > > REDACTED_SHARENAME/REDACTED_REPOPATH on /tmp/foo1 type hgfs
> > > (binary,notexec,user)
> > > REDACTED_SHARENAME on /mnt/REDACTED_SHAREMNT type hgfs
> > > (binary,notexec,noacl,user)
> > > C:/cygwin64/bin on /usr/bin type ntfs (binary,auto)
> > > C:/cygwin64/lib on /usr/lib type ntfs (binary,auto)
> > > C:/cygwin64 on / type ntfs (binary,auto)
> > > C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME REDACTED_CWD
> > > $ cygcheck.exe -s (paired down results)
> > >
> > > Cygwin Configuration Diagnostics
> > > Current System Time: Sun Jan 26 20:14:43 2020
> > >
> > > Windows 10 Professional Ver 10.0 Build 17763
> > >
> > > ...
> > >  3508k 2019/12/21 C:\cygwin64\bin\cygwin1.dll
> > >     Cygwin DLL version info:
> > >         DLL version: 3.1.2
> > >         DLL epoch: 19
> > >         DLL old termios: 5
> > >         DLL malloc env: 28
> > >         Cygwin conv: 181
> > >         API major: 0
> > >         API minor: 340
> > >         Shared data: 5
> > >         DLL identifier: cygwin1
> > >         Mount registry: 3
> > >         Cygwin registry name: Cygwin
> > >         Installations name: Installations
> > >         Cygdrive default prefix:
> > >         Build date:
> > >         Shared id: cygwin1S5
> > >
> > > ...
> > > No Cygwin services found.
> > >
> > >
> > > Cygwin Package Information
> > > Package                 Version            Status
> > > _autorebase             001007-1           OK
> > > base-cygwin             3.8-1              OK
> > > base-files              4.3-2              OK
> > > bash                    4.4.12-3           OK
> > > cygrunsrv               1.62-1             OK
> > > cygutils                1.4.16-2           OK
> > > cygwin                  3.1.2-1            OK
> > > git                     2.21.0-1           OK
> > >
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME /tmp/foo4
> > > $ git clone REDACTED_CWD --bare ./
> > > Cloning into bare repository '.'...
> > > done.
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME /tmp/foo4
> > > $ git remote add REDACTED_REMOTENAME
> > > REDACTED_USER2NAME AT REDACTED_HOST2NAME:REDACTED_REPO2PATH
> > >
> > > REDACTED_USERNAME AT REDACTED_HOSTNAME /tmp/foo4
> > > $ git fetch REDACTED_REMOTENAME autocommit-20191028-1148-from-master
> > > remote: Counting objects: 33, done.
> > > remote: Total 33 (delta 0), reused 2 (delta 0)
> > > Unpacking objects: 100% (33/33), done.
> > > From REDACTED_HOST2NAME:REDACTED_REPO2PATH
> > >  * branch                  autocommit-20191028-1148-from-master ->
> > > FETCH_HEAD
> > >  * [new branch]            autocommit-20191028-1148-from-master ->
> > > REDACTED_REMOTENAME/autocommit-20191028-1148-from-master
> > >
> > >
> > >
> > > --
> > > Jason Pyeron  | Architect
> > > PD Inc        |
> > > 10 w 24th St  |
> > > Baltimore, MD |
> > >
> > > .mil: jason DOT j DOT pyeron DOT ctr AT mail DOT mil
> > > .com: jpyeron AT pdinc DOT us
> > > tel : 202-741-9397
> > >
> > >
> > >
> > >
> > > --
> > > Problem reports:       http://cygwin.com/problems.html
> > > FAQ:                   http://cygwin.com/faq/
> > > Documentation:         http://cygwin.com/docs.html
> > > Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> > >
> > >



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