DescribedAccess - Amazon Transfer Family
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DescribedAccess

Describes the properties of the access that was specified.

Contents

ExternalId

A unique identifier that is required to identify specific groups within your directory. The users of the group that you associate have access to your Amazon S3 or Amazon EFS resources over the enabled protocols using Amazon Transfer Family. If you know the group name, you can view the SID values by running the following command using Windows PowerShell.

Get-ADGroup -Filter {samAccountName -like "YourGroupName*"} -Properties * | Select SamAccountName,ObjectSid

In that command, replace YourGroupName with the name of your Active Directory group.

The regular expression used to validate this parameter is a string of characters consisting of uppercase and lowercase alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,.@:/-

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: ^S-1-[\d-]+$

Required: No

HomeDirectory

The landing directory (folder) for a user when they log in to the server using the client.

A HomeDirectory example is /bucket_name/home/mydirectory.

Type: String

Length Constraints: Maximum length of 1024.

Pattern: ^$|/.*

Required: No

HomeDirectoryMappings

Logical directory mappings that specify what Amazon S3 or Amazon EFS paths and keys should be visible to your user and how you want to make them visible. You must specify the Entry and Target pair, where Entry shows how the path is made visible and Target is the actual Amazon S3 or Amazon EFS path. If you only specify a target, it is displayed as is. You also must ensure that your Amazon Identity and Access Management (IAM) role provides access to paths in Target. This value can be set only when HomeDirectoryType is set to LOGICAL.

In most cases, you can use this value instead of the session policy to lock down the associated access to the designated home directory ("chroot"). To do this, you can set Entry to '/' and set Target to the HomeDirectory parameter value.

Type: Array of HomeDirectoryMapEntry objects

Array Members: Minimum number of 1 item. Maximum number of 50 items.

Required: No

HomeDirectoryType

The type of landing directory (folder) that you want your users' home directory to be when they log in to the server. If you set it to PATH, the user will see the absolute Amazon S3 bucket or EFS paths as is in their file transfer protocol clients. If you set it LOGICAL, you need to provide mappings in the HomeDirectoryMappings for how you want to make Amazon S3 or Amazon EFS paths visible to your users.

Type: String

Valid Values: PATH | LOGICAL

Required: No

Policy

A session policy for your user so that you can use the same Amazon Identity and Access Management (IAM) role across multiple users. This policy scopes down a user's access to portions of their Amazon S3 bucket. Variables that you can use inside this policy include ${Transfer:UserName}, ${Transfer:HomeDirectory}, and ${Transfer:HomeBucket}.

Type: String

Length Constraints: Maximum length of 2048.

Required: No

PosixProfile

The full POSIX identity, including user ID (Uid), group ID (Gid), and any secondary groups IDs (SecondaryGids), that controls your users' access to your Amazon EFS file systems. The POSIX permissions that are set on files and directories in your file system determine the level of access your users get when transferring files into and out of your Amazon EFS file systems.

Type: PosixProfile object

Required: No

Role

The Amazon Resource Name (ARN) of the Amazon Identity and Access Management (IAM) role that controls your users' access to your Amazon S3 bucket or Amazon EFS file system. The policies attached to this role determine the level of access that you want to provide your users when transferring files into and out of your Amazon S3 bucket or Amazon EFS file system. The IAM role should also contain a trust relationship that allows the server to access your resources when servicing your users' transfer requests.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Pattern: arn:.*role/.*

Required: No

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: