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Merge pull request #448 from alexmwu/tmpfs
[launcher] Add configurable /dev/shm size and tmpfs mount option
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| substitutions: | ||
| '_IMAGE_NAME': '' | ||
| '_IMAGE_PROJECT': '' | ||
| '_CLEANUP': 'true' | ||
| '_VM_NAME_PREFIX': 'cs-mounts-test' | ||
| '_ZONE': 'us-west1-a' | ||
| '_WORKLOAD_IMAGE': 'us-west1-docker.pkg.dev/confidential-space-images-dev/cs-integ-test-images/mounts_workload:latest' | ||
| '_DEV_SHM_SIZE_KB': '128000' | ||
| '_TMPFS_SIZE_KB': '222' | ||
| steps: | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CreateVMWithMountsAllowed | ||
| entrypoint: 'bash' | ||
| env: | ||
| - 'BUILD_ID=$BUILD_ID' | ||
| - '_DEV_SHM_SIZE_KB=$_DEV_SHM_SIZE_KB' | ||
| - '_TMPFS_SIZE_KB=$_TMPFS_SIZE_KB' | ||
| args: ['create_vm.sh','-i', '${_IMAGE_NAME}', | ||
| '-p', '${_IMAGE_PROJECT}', | ||
| '-m', '^~^tee-image-reference=${_WORKLOAD_IMAGE}~tee-container-log-redirect=true~tee-mount=type=tmpfs,source=tmpfs,destination=/tmp/sized,size=${_TMPFS_SIZE_KB}000~tee-dev-shm-size-kb=${_DEV_SHM_SIZE_KB}', | ||
| '-n', '${_VM_NAME_PREFIX}-${BUILD_ID}-allowed', | ||
| '-z', '${_ZONE}', | ||
| ] | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CreateVMWithMountsDenied | ||
| entrypoint: 'bash' | ||
| env: | ||
| - 'BUILD_ID=$BUILD_ID' | ||
| args: ['create_vm.sh','-i', '${_IMAGE_NAME}', | ||
| '-p', '${_IMAGE_PROJECT}', | ||
| '-m', '^~^tee-image-reference=${_WORKLOAD_IMAGE}~tee-container-log-redirect=true~tee-mount=type=tmpfs,source=tmpfs,destination=/disallowed', | ||
| '-n', '${_VM_NAME_PREFIX}-${BUILD_ID}-denied', | ||
| '-z', '${_ZONE}', | ||
| ] | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CheckMountsAllowed | ||
| env: | ||
| - '_VM_NAME_PREFIX=$_VM_NAME_PREFIX' | ||
| - 'BUILD_ID=$BUILD_ID' | ||
| - '_ZONE=$_ZONE' | ||
| - '_DEV_SHM_SIZE_KB=$_DEV_SHM_SIZE_KB' | ||
| - '_TMPFS_SIZE_KB=$_TMPFS_SIZE_KB' | ||
| script: | | ||
| #!/bin/bash | ||
| set -euo pipefail | ||
| source util/read_serial.sh | ||
| sleep 45 | ||
| SERIAL_OUTPUT=$(read_serial ${_VM_NAME_PREFIX}-${BUILD_ID}-allowed ${_ZONE}) | ||
| echo $SERIAL_OUTPUT | ||
| if echo $SERIAL_OUTPUT | grep -q "tmpfs.*${_TMPFS_SIZE_KB}.*/tmp/sized" | ||
| then | ||
| echo "- Mount launch policy verified for sized tmpfs" | ||
| else | ||
| echo "FAILED: Mount launch policy verification for sized tmpfs" | ||
| echo 'TEST FAILED' > /workspace/status.txt | ||
| echo $SERIAL_OUTPUT | ||
| fi | ||
| if echo $SERIAL_OUTPUT | grep -q "shm.*${_DEV_SHM_SIZE_KB}.*/dev/shm" | ||
| then | ||
| echo "- Mount launch policy verified for /dev/shm size" | ||
| else | ||
| echo "FAILED: Mount launch policy verification for /dev/shm size" | ||
| echo 'TEST FAILED' > /workspace/status.txt | ||
| echo $SERIAL_OUTPUT | ||
| fi | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CheckMountsDenied | ||
| env: | ||
| - '_VM_NAME_PREFIX=$_VM_NAME_PREFIX' | ||
| - 'BUILD_ID=$BUILD_ID' | ||
| - '_ZONE=$_ZONE' | ||
| script: | | ||
| #!/bin/bash | ||
| set -euo pipefail | ||
| source util/read_serial.sh | ||
| sleep 45 | ||
| SERIAL_OUTPUT=$(read_serial ${_VM_NAME_PREFIX}-${BUILD_ID}-denied ${_ZONE}) | ||
| if echo $SERIAL_OUTPUT | grep -q "policy only allows mounts in the following paths" | ||
| then | ||
| echo "- Mount launch policy verified for disallowed mounts" | ||
| else | ||
| echo "FAILED: Mount launch policy verification for disallowed mounts" | ||
| echo 'TEST FAILED' > /workspace/status.txt | ||
| echo $SERIAL_OUTPUT | ||
| fi | ||
| waitFor: ['CreateVMWithMountsDenied'] | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CleanUpVMWithMountsAllowed | ||
| entrypoint: 'bash' | ||
| env: | ||
| - 'CLEANUP=$_CLEANUP' | ||
| args: ['cleanup.sh', '${_VM_NAME_PREFIX}-${BUILD_ID}-allowed', '${_ZONE}'] | ||
| waitFor: ['CheckMountsAllowed'] | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CleanUpVMWithMountsDenied | ||
| entrypoint: 'bash' | ||
| env: | ||
| - 'CLEANUP=$_CLEANUP' | ||
| args: ['cleanup.sh', '${_VM_NAME_PREFIX}-${BUILD_ID}-denied', '${_ZONE}'] | ||
| waitFor: ['CheckMountsDenied'] | ||
|
|
||
| # Must come after cleanup. | ||
| - name: 'gcr.io/cloud-builders/gcloud' | ||
| id: CheckFailure | ||
| entrypoint: 'bash' | ||
| env: | ||
| - 'BUILD_ID=$BUILD_ID' | ||
| args: ['check_failure.sh'] |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| # From current directory: | ||
| # gcloud builds submit --tag us-west1-docker.pkg.dev/confidential-space-images-dev/cs-integ-test-images/mounts_workload:latest | ||
| FROM alpine | ||
|
|
||
| COPY print_mounts.sh / | ||
|
|
||
| LABEL "tee.launch_policy.log_redirect"="always" | ||
| LABEL "tee.launch_policy.allow_mount_destinations"="/run/tmp:/var/tmp:/tmp" | ||
|
|
||
| ENTRYPOINT ["/print_mounts.sh"] | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| #!/bin/sh | ||
|
|
||
| df -h | ||
| df | ||
|
|
||
| ls -lathr / | ||
| ls -lathr /tmp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| // Package launchermount defines mount types for the launcher workload. | ||
| package launchermount | ||
|
|
||
| import "github.com/opencontainers/runtime-spec/specs-go" | ||
|
|
||
| // Key-value constants for mount configurations. | ||
| // Keys are used to specify the specific mount configuration. | ||
| // For example, TypeKey is used to specify the type of mount. | ||
| // Consts not suffixed with Key are constant values for given mount configs. | ||
| const ( | ||
| TypeKey = "type" | ||
| SourceKey = "source" | ||
| DestinationKey = "destination" | ||
| SizeKey = "size" | ||
| TypeTmpfs = "tmpfs" | ||
| ) | ||
|
|
||
| var ( | ||
| // AllMountKeys are all possible mount configuration key names. | ||
| AllMountKeys = []string{TypeKey, SourceKey, DestinationKey, SizeKey} | ||
| ) | ||
|
|
||
| // Mount is the interface to implement for a new container launcher mount type. | ||
| type Mount interface { | ||
| // SpecsMount converts the Mount type to an OCI spec Mount. | ||
| SpecsMount() specs.Mount | ||
| // The absolute path mount point for this mount in the container. | ||
| // Stored as Destination in specs.Mount. | ||
| Mountpoint() string | ||
| } |
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