Error NoPermissions:Formatting on the unsaved file

[Honghe]

Issue Type: Bug

Python extension output:

Error 2021-05-14 17:06:55: Failed to create a temporary file [NoPermissions (FileSystemError): Unable to write file '/Untitled-1.13264068d108c6901b3592ea654fcd57.tmp' (NoPermissions (FileSystemError): Error: EACCES: permission denied, open '/Untitled-1.13264068d108c6901b3592ea654fcd57.tmp')
	at _handleError (/usr/share/code/resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:87:156478)
	at runMicrotasks (<anonymous>)
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async y.writeText (/home/jack/.vscode/extensions/ms-python.python-2021.5.829140558/out/client/extension.js:9:344845)
	at async Object.t.getTempFileWithDocumentContents (/home/jack/.vscode/extensions/ms-python.python-2021.5.829140558/out/client/extension.js:9:360722)
	at async l.provideDocumentFormattingEdits (/home/jack/.vscode/extensions/ms-python.python-2021.5.829140558/out/client/extension.js:9:373955)] {
  code: 'NoPermissions'
}

Extension version: 2021.5.840043038
VS Code version: Code 1.56.1 (e713fe9b05fc24facbec8f34fb1017133858842b, 2021-05-06T10:08:16.954Z)
OS version: Linux x64 5.4.0-42-generic
OS: Ubuntu 20.04.2

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on rasterization: disabled_software skia_renderer: enabled_on video_decode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	2, 1, 1
Memory (System)	15.55GB (0.30GB free)
Process Argv	--no-sandbox --unity-launch --crash-reporter-id d1342c61-ab2f-444c-8817-05c0593ae50f
Screen Reader	no
VM	67%
DESKTOP_SESSION	ubuntu
XDG_CURRENT_DESKTOP	Unity
XDG_SESSION_DESKTOP	ubuntu
XDG_SESSION_TYPE	x11

A/B Experiments

vsliv368:30146709
vsreu685:30147344
python383cf:30185419
pythonvspyt602:30300191
vspor879:30202332
vspor708:30202333
vspor363:30204092
pythonvspyt639:30300192
pythontb:30283811
pythonvspyt551:30291414
vspre833:30267464
pythonptprofiler:30281270
vshan820:30294714
vscorecescf:30290706
pythondataviewer:30285071
vscus158:30286553
vscgsv2:30301612
bridgeflightcf:30299255
vscod805:30301674

[karthiknadig]

@Honghe Can you check if you have TMP, TEMP, TMPDIR either of them set to a directory where you have write permissions? If you are using formatter like black we currently have to use a temp file to format it.

[Honghe]

@karrtikr The default formatting provide is autopep8. and it still doesn't work even I start code via:

mkdir $HOME/tmp
TMP=$HOME/tmp code .

[karthiknadig]

@Honghe This is what I have for tmp folder:

I also recommend trying to set all three variants of the temp env variable. Also, see if you can use mktemp from the VS Code terminal to create a temp file.

[Honghe]

@karthiknadig

TMP=$HOME/tmp TEMP=$TMP TMPDIR=$TMP code .

Test command in the VS Code terminal:

~/vscodeprojects
$ echo $TMP
/home/jack/tmp

~/vscodeprojects
$ echo $TMPDIR
/home/jack/tmp

~/vscodeprojects
$ echo $TEMP  
/home/jack/tmp

~/vscodeprojects
$ mktemp
/home/jack/tmp/tmp.S4hiJyuTDa

But the formatting error still occurs:

Error 2021-05-18 16:36:46: Failed to create a temporary file [NoPermissions (FileSystemError): Unable to write file '/Untitled-1.13264068d108c6901b3592ea654fcd57.tmp' (NoPermissions (FileSystemError): Error: EACCES: permission denied, open '/Untitled-1.13264068d108c6901b3592ea654fcd57.tmp')
	at _handleError (/usr/share/code/resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:87:156478)
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async y.writeText (/home/jack/.vscode/extensions/ms-python.python-2021.5.842923320/out/client/extension.js:9:344845)
	at async Object.t.getTempFileWithDocumentContents (/home/jack/.vscode/extensions/ms-python.python-2021.5.842923320/out/client/extension.js:9:360722)
	at async l.provideDocumentFormattingEdits (/home/jack/.vscode/extensions/ms-python.python-2021.5.842923320/out/client/extension.js:9:373955)] {
  code: 'NoPermissions'
}

[karthiknadig]

@Honghe This is very strange. You get the NoPermissions because it is trying to create a temp file in the root directory. The reason that happens is the os-tmpdir library is not able to find the temp directory. Not really sure why this is the case, because providing TMP, TMPDIR or TEMP should work. This might be a good question for StackOverflow.

[craigds]

I've been getting this same error for a few days now (python ext is v2021.7.992362372-dev):

This is in the Log (Extension Host) in my output tab

Error (FileSystemError): Unable to write file '/Untitled-2.387795c86765346eca0c041bac00348b.tmp' (Unknown (FileSystemError): Error: EROFS: read-only file system, open '/Untitled-2.387795c86765346eca0c041bac00348b.tmp')
	at _handleError (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:84:155975)
	at runMicrotasks (<anonymous>)
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async y.writeText (/Users/cdestigter/.vscode/extensions/ms-python.python-2021.7.992362372-dev/out/client/extension.js:9:344068)
	at async Object.t.getTempFileWithDocumentContents (/Users/cdestigter/.vscode/extensions/ms-python.python-2021.7.992362372-dev/out/client/extension.js:9:359945)
	at async h.provideDocumentFormattingEdits (/Users/cdestigter/.vscode/extensions/ms-python.python-2021.7.992362372-dev/out/client/extension.js:9:373178)

Not sure if related, but the Python log has this stuff in it:

Python interpreter path: /usr/local/bin/python3.8
Python interpreter path: /usr/local/bin/python3.7
Python interpreter path: /usr/local/bin/python3.8
Python interpreter path: /usr/local/bin/python3.7
Python interpreter path: /usr/local/bin/python3.8
Python interpreter path: /usr/local/bin/python3.7

Every time I switch context to a python file, one more of each interpreter shows up in the log. Weird huh? My interpreter in the User settings is set to /usr/local/bin/python3.7 so I'm not clear on where the 3.8 is coming from.

With either of those interpreters, I can run import tempfile ; print(tempfile.gettempdir()) and I get the expected result: /var/folders/4b/xwkgxs8x5y55f33bqm_8mjdc0000gn/T (which is the value of the TMPDIR env var)

This doesn't happen if I downgrade to 2021.6.0 (but vscode immediately nags me to reload to re-upgrade again - why is it forcing upgrades to a dev version?)

[RedHeadphone]

I am getting same error(my OS is windows)

I have set TMP, TEMP, TMPDIR path to a different folder still it saves temp file at path / while formatting python code without saving

[RedHeadphone]

@karthiknadig

[karthiknadig]

This happens if the VS Code instance for some reason does not pick up TMP, TEMP changes. Unfortunately, the temp file creation is handled by an external library. A generic solution to this is to not create the temp file in the first place. We have plans to implement this via Language Server Protocol. This will allow us to solve formatting problem for python files and notebook scenarios.

So closing this in favor of #17918