Do not create fuse device if it already exists

[Furisto]

Description

Do not create fuse device if it already exists. We will use the generic device plugin and a custom fuse resource in the future to create the fuse device. It will allow us to get rid of modifying the eBPF program that was created by runc in order to allow access to the device. Modifying the eBPF program has the side effect that changes to the eBPF program will get lost if other components also need to overwrite it.

Related Issue(s)

Fixes ENT-338

How to test

• Open workspace and check that fuse device is still accessible
• You can use the following program for the check

#define _GNU_SOURCE
#include <unistd.h>

#include <sys/syscall.h>
#include <linux/fs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>


int main() {
  const char* src_path = "/dev/fuse";
  unsigned int flags = O_RDWR;
  printf("RET: %ld\n", syscall(SYS_openat, AT_FDCWD, src_path, flags));
}

• Compile with gcc and verify that the program returns 3

Documentation

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - fo-fuse-device
• 🔗 URL - fo-fuse-device.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - fo-fuse-device-gha.26964
• 🗒️ Logs - GCP Logs Explorer

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• /werft preemptible
  Saves cost. Untick this only if you're really sure you need a non-preemtible machine.
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold