hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11415) Local file system on Linux may create files and directories initially with wider permissions than intended.
Date Tue, 16 Dec 2014 23:43:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14249170#comment-14249170
] 

Chris Nauroth commented on HADOOP-11415:
----------------------------------------

See this comment for a proposed solution using JNI to call {{fchmod}}:

https://issues.apache.org/jira/browse/HADOOP-11321?focusedCommentId=14233329&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14233329

Note that just creating the file or directory with specific permissions initially may be insufficient,
because the existing contract of {{FileSystem}} basically guarantees that the process umask
is not a factor.  That's discussed in more detail here:

https://issues.apache.org/jira/browse/HADOOP-11321?focusedCommentId=14230778&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14230778


> Local file system on Linux may create files and directories initially with wider permissions
than intended.
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11415
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11415
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Chris Nauroth
>
> As discussed in HADOOP-11321, the local file system implements file and directory creation
as a two-step process: create followed by chmod to set the caller's requested permissions.
 This causes a brief window in which the new file or directory may have wider permissions
than what the caller requested.  HADOOP-11321 fixed this specifically for Windows as a side
effect of fixing a bug in writing to an SMB share.  This issue tracks fixing it specifically
for Linux.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message