November 2004
Intermediate to advanced
328 pages
8h 12m
English
book
Securing NFS in AIX An Introduction to NFS v4 in AIX 5L Version 5.3
by Chris Almond, Lutz Denefleh, Sridhar Murthy, Aniket Patel, John Trindle
Content preview from Securing NFS in AIX An Introduction to NFS v4 in AIX 5L Version 5.3
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72 Securing NFS in AIX
For example, as with UNIX permissions, the w permission bit in a directory’s ACL
has to do with creating, deleting, and renaming files and subdirectories within
that directory, rather than changing the contents of those files and subdirectories.
The difference comes into play when mapping the rwx bits to user (owner),
group, and other. This mapping is unspecified in RFC 3530. Here is an example
of the mapping we observe in AIX.
Consider a file with the following ACL:
*
* ACL_type NFS4
*
*
* Owner: sally
* Group: staff
*
s:(OWNER@): a cCs
s:(OWNER@): d o
s:(GROUP@): a rRxadcs
s:(GROUP@): d wpWDACo
s:(EVERYONE@): a rwpRxadcs
s:(EVERYONE@): d WDACo
Applying ls -l to the file shows:
-rwxr-xrwx 1 sally staff 0 Jul 30 11:20 testf ...
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