Image Management Service (IMS)

The Organizations service provides Service Control Policies (SCPs) to set access control policies.

SCPs do not actually grant any permissions to an entity. They only set the permissions boundary for the entity. When SCPs are attached to an organizational unit (OU) or a member account, the SCPs do not directly grant permissions to that OU or member account. Instead, the SCPs only determine what permissions are available for that member account or those member accounts under that OU.

This section describes the elements used by Organizations SCPs. The elements include actions, resources, and conditions.

For details about how to use these elements to create a custom SCP, see Creating an SCP.

Actions

Actions are specific operations that are allowed or denied in an SCP.

The Access Level column describes how the action is classified (List, Read, or Write). This classification helps you understand the level of access that an action grants when you use it in an SCP.
Resource Type indicates whether the action supports resource-level permissions.
- You can use a wildcard (*) to indicate all resource types. If this column is empty (-), the action does not support resource-level permissions, and you must specify all resources ("*") in your SCP statements.
- If this column includes a resource type, you must specify a URN for the Resource element in your identity policy statements.
- Required resources are marked with asterisks (*) in the table. If you specify a resource in a statement using this action, then it must be of this type.
For details about the resource types defined by IMS, see Resources.
The Condition Key column contains keys that you can specify in the Condition element of an SCP statement.
- If the Resource Type column has values for an action, the condition key takes effect only for the listed resource types.
- If the Resource Type column is empty (-) for an action, the condition key takes effect for all resources that action supports.
- If the Condition Key column of an action is empty (-), the action does not support any condition keys.
For details about the condition keys defined by IMS, see Conditions.

The following table lists the actions that you can define in SCP statements for IMS.

**Table 1** Supported Actions
Action	Description	Access Level	Resource Type (*: required)	Condition Key
ims:images:list	Grants permission to view images.	list	-	g:EnterpriseProjectId
ims:images:get	Grants permission to view details about a specified image.	read	image *	-
ims:images:create	Grants permission to create image metadata.	write	-	g:RequestTag/<tag-key> g:TagKeys
ims:images:share	Grants permission to share images.	permission_management	image *	ims:TargetOrgPaths
ims:images:copyInRegion	Grants permission to replicate images within a region.	write	image *	ims:Encrypted
ims:images:copyCrossRegion	Grants permission to replicate images across regions.	write	image *	g:ResourceTag/<tag-key> g:EnterpriseProjectId
ims:quotas:get	Grants permission to query the image quota.	read	-	-
ims:images:upload	Grants permission to upload images.	write	image *	-
ims:wholeImages:create	Grants permission to create full-ECS images.	write	-	g:EnterpriseProjectId g:RequestTag/<tag-key> g:TagKeys
ims:images:export	Grants permission to export images.	read	image *	-
ims:dataImages:create	Grants permission to create data disk images from external image files.	write	-	g:EnterpriseProjectId g:RequestTag/<tag-key> g:TagKeys
ims:serverImages:create	Grants permission to create images.	write	-	g:EnterpriseProjectId g:RequestTag/<tag-key> g:TagKeys
ims:images:setTags	Grants permission to update image tags.	tagging	image *	g:RequestTag/<tag-key> g:TagKeys
ims:images:getTags	Grants permission to query tags of an image.	read	-	g:EnterpriseProjectId g:RequestTag/<tag-key> g:TagKeys
ims:images:deleteImage	Grants permission to delete an image.	write	image *	-
ims:images:updateImage	Grants permission to update image information.	write	image *	-
ims:images:listOsVersion	Grants permission to query OSs supported by images.	list	-	-
ims:images:getJob	Grants permission to query progresses of asynchronous tasks.	read	-	-
ims:images:import	Grants permission to import images.	write	-	g:EnterpriseProjectId g:RequestTag/<tag-key> g:TagKeys
ims:images:setOrDeleteTags	Grants permission to add or deleting image tags in a batch.	write	-	g:RequestTag/<tag-key> g:TagKeys
ims:images:updateMemberStatus	Grants permission to update the status of members who can use shared images.	write	image *	-
ims:images:addMember	Grants permission to add a tenant that can use a shared image.	write	image *	g:EnterpriseProjectId g:ResourceTag/<tag-key>
ims:images:deleteMember	Grants permission to delete a tenant from the group where the members can use a shared image.	write	image *	g:EnterpriseProjectId g:ResourceTag/<tag-key>
ims:images:listImagesByTag	Grants permission to query images by tag.	read	-	-
ims:images:showImageTags	Grants permission to query tags of an image.	read	image *	g:EnterpriseProjectId g:ResourceTag/<tag-key>
ims:images:listImageTags	Grants permission to query project tags.	list	-	-

Each API of IMS usually supports one or more actions. Table 2 lists the supported actions and dependencies.

**Table 2** Actions and dependencies supported by IMS APIs
API	Action	Dependencies
GET /v2/cloudimages	ims:images:list	-
GET /v2/images/{image_id}	ims:images:get	-
POST /v2/images	ims:images:create	-
POST /v2/images/{image_id}/members	ims:images:share	ims:images:get
POST /v1/cloudimages/{image_id}/copy	ims:images:copyInRegion	ims:serverImages:create
POST /v1/cloudimages/{image_id}/cross_region_copy	ims:images:copyCrossRegion	-
GET /v1/cloudimages/quota	ims:quotas:get	-
PUT /v1/cloudimages/{image_id}/upload PUT /v2/images/{image_id}/file	ims:images:upload	ims:images:get ims:images:update
POST /v1/cloudimages/wholeimages/action	ims:wholeImages:create	-
POST /v1/cloudimages/{image_id}/file	ims:images:export	obs:object:GetObject obs:object:PutObject
POST /v2/cloudimages/quickimport/action (required only for quickly importing a data disk image) POST /v1/cloudimages/dataimages/action	ims:dataImages:create	-
PATCH /v2/cloudimages/{image_id} (required only for enterprise project migration) POST /v2/cloudimages/action POST /v2/cloudimages/quickimport/action (required only for quickly importing a system disk image) POST /v1/cloudimages/{image_id}/copy (required only by enterprise project users)	ims:serverImages:create	-
PUT /v1/cloudimages/tags	ims:images:setTags	-
GET /v1/cloudimages/tags	ims:images:getTags	-
DELETE /v2/images/{image_id}	ims:images:deleteImage	-
PATCH /v2/cloudimages/{image_id} PATCH /v2/images/{image_id}	ims:images:updateImage	-
GET /v1/cloudimages/os_version	ims:images:listOsVersion	-
GET /v1/cloudimages/job/{job_id}	ims:images:getJob	-
POST /v2/cloudimages/quickimport/action	ims:images:import	ims:dataImages:create ims:serverImages:create
POST /v2/{project_id}/images/{image_id}/tags/action	ims:images:setOrDeleteTags	ims:images:setTags ims:images:deleteTags
PUT /v1/cloudimages/members PUT /v2/images/{image_id}/members/{member_id}	ims:images:updateMemberStatus	-
POST /v1/cloudimages/members	ims:images:addMember	-
DELETE /v1/cloudimages/members	ims:images:deleteMember	-
POST /v2/{project_id}/images/resource_instances/action	ims:images:listImagesByTag	-
GET /v2/{project_id}/images/{image_id}/tags	ims:images:showImageTags	-
GET /v2/{project_id}/images/tags	ims:images:listImageTags	-

Resources

A resource type indicates the resources that an SCP applies to. If you specify a resource type for any action in Table 3, the resource URN must be specified in the SCP statements using that action, and the SCP applies only to resources of this type. If no resource type is specified, the Resource element is marked with an asterisk (*) and the SCP applies to all resources. You can also set condition keys in an SCP to define resource types.

The following table lists the resource types that you can specify in SCP statements for IMS.

**Table 3** Resource types supported by IMS
Resource Type	URN
image	ims:<region>:<account-id>:image:<image-id>

<region> indicates the region where a user is authorized to perform operations.
<account-id> indicates the ID of an authorized user account. Obtain an account ID as instructed in API Credentials.
<image-id> indicates the ID of the image on which a user is authorized to perform operations.

You can use a wildcard (*) in URN to indicate all resources.

Conditions

A Condition element lets you specify conditions for when an SCP is in effect. It contains condition keys and operators.

The condition key that you specify can be a global or service-specific condition key.
- Global condition keys (with the g: prefix) apply to all actions. Cloud services do not need to provide user identity information. Instead, IAM automatically obtains such information and authenticates users. For details, see Global Condition Keys.
- Service-specific condition keys (with the abbreviation of a service name plus a colon as the prefix, for example, ims:) apply only to operations of IMS. For details, see Table 4.
- The number of values associated with a condition key in the request context of an API call makes the condition key single-valued or multivalued. Single-valued condition keys have at most one value in the request context of an API call. Multivalued condition keys can have multiple values in the request context of an API call. For example, a request can originate from at most one VPC endpoint, so g:SourceVpce is a single-valued condition key. You can tag resources and include multiple tag key-value pairs in a request, so g:TagKeys is a multivalued condition key.
- A condition operator, condition key, and a condition value together constitute a complete condition statement. An SCP can be applied only when its request conditions are met. For supported condition operators, see Condition operators.

The following table lists the condition keys that you can define in SCPs for IMS. You can include these condition keys to specify conditions for when your SCP is in effect.

**Table 4** Service-specific condition keys supported by IMS
Service-specific Condition Key	Type	Single-valued/Multivalued	Description
ims:TargetOrgPaths	string	Multivalued	Filters access based on the Organizations Path of the specified sharing account.
ims:Encrypted	boolean	Single valued	Controls operations such as image import and replication based on whether images are encrypted.
ims:TargetBucketOrgPaths	string	Multivalued	Filters access based on the Organizations Path of the specified destination bucket owner account.
ims:OriginBucketOrgPaths	string	Multivalued	Filters access based on the Organizations Path of the specified source bucket owner account.