[jira] Commented: (HADOOP-4111) fuse-dfs implement posix access method

["Pete Wyckoff (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12631874#action_12631874 ] 

Pete Wyckoff commented on HADOOP-4111:
--------------------------------------

proposal for the short term:

Implement this entirely in fuse-dfs using the hdfsStat structure which has the owner, group and permissions of a file.  Use the 'root' user on the box fuse-dfs is running on as the super user. 

This can be done relatively quickly and gives basically the right semantics assuming HDFS is "exported" with no_root_squash which since it doesn't implement authenticating users, it really is.

The only downside is fuse-dfs will not then respect the user that is the superuser for HDFS; they would have to sudo command like everyone else.

This does *not* introduce any security holes since the user could directly use the Java client or libhdfs to do any operation fuse-dfs can.




> fuse-dfs implement posix access method
> --------------------------------------
>
>                 Key: HADOOP-4111
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4111
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/fuse-dfs
>            Reporter: Pete Wyckoff
>
> int dfs_access(path, mode)

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