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Top Forums UNIX for Dummies Questions & Answers ACL (POSIX and NFSv4) Support over NFS shared drives on different Unix platforms Post 302707943 by jim mcnamara on Sunday 30th of September 2012 01:32:10 PM
Old 09-30-2012
Last question: I know that it will work for Solaris 10/11 NFS4, per documentation. I have not tried, so I cannot comment how well it behaves.

There are problems with ACL's across platforms:
the uid has to match numerically
the gid has to match numerically
the NSF mount has to support the ACL operations, e.g., if the ACL grants write, but the remote file system is read-only then the ACL can not be honored.
See:
http://nfs.sourceforge.net/nfs-howto/ar01s06.html

If you are going across all of the platforms you mentioned - this will go beyond a nightmare to keep consistent and to maintain. On one large multiuser system ACL's are a pain in the butt. My opinion. If you can live without them do so.

I also think you are asking a hypothetical question. Even high-level IT managers know better than to have different major mission critical systems running on the number of platforms you mention. There is enough windows/UNIX/Linux chaos without adding to it.
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ACL_DELETE_ENTRY(3)					   BSD Library Functions Manual 				       ACL_DELETE_ENTRY(3)

NAME
acl_delete_entry -- delete an ACL entry LIBRARY
Linux Access Control Lists library (libacl, -lacl). SYNOPSIS
#include <sys/types.h> #include <sys/acl.h> int acl_delete_entry(acl_t acl, acl_entry_t entry_d); DESCRIPTION
The acl_delete_entry() function removes the ACL entry indicated by the entry_d descriptor from the ACL pointed to by acl. Any existing ACL entry descriptors that refer to entries in acl other than that referred to by entry_d continue to refer to the same entries. The argument entry_d and any other ACL entry descriptors that refer to the same ACL entry are undefined after this function completes. Any existing ACL pointers that refer to the ACL referred to by acl continue to refer to the ACL. RETURN VALUE
The acl_delete_entry() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error. ERRORS
If any of the following conditions occur, the acl_delete_entry() function returns -1 and sets errno to the corresponding value: [EINVAL] The argument acl_p is not a valid pointer to an ACL. The argument entry_d is not a valid pointer to an ACL entry. STANDARDS
IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned) SEE ALSO
acl_copy_entry(3), acl_create_entry(3), acl_get_entry(3), acl(5) AUTHOR
Derived from the FreeBSD manual pages written by Robert N M Watson <rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher <a.gruenbacher@bestbits.at>. Linux ACL March 23, 2002 Linux ACL
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