r20089: Put gpfs acl function into vfs_gpfs module. Thanks to Gomati Mohanan

<gomati.mohanan@in.ibm.com>.

Also fix fields for sec_desc differences between 3.0 and 3.0.24 in
nfs4_acls.c.
(This used to be commit 3d6f387783467bbd7ea88d6a853b41572badf1ef)

1 files changed, 82 insertions, 0 deletions

diff --git a/source3/modules/README-gpfs-acl.txt b/source3/modules/README-gpfs-acl.txt
new file mode 100644
index 0000000000..49f3259c1e
--- /dev/null
+++ b/source3/modules/README-gpfs-acl.txt
@@ -0,0 +1,82 @@
+This patch has been taken against SAMBA_3_0 Release 20028.
+
+The patch basically moves the GPFS-ACL functionalities into the new GPFS VFS module( vfs_gpfs ).
+
+Please read SAMBA_3_0/source/modules/README.nfs4acls.txt - generalised README file on Samba support for NFS4-ACLS. 
+This README file is specific for GPFS only.
+
+Configuring GPFS ACL support
+===============================
+
+Binary: (default install path is [samba]/lib/vfs/)
+- gpfs.so 
+
+Its compiled by default, no additional configure option needed.
+
+To enable/use/load this module, include "vfs objects = gpfs" in the smb.conf file under concerned share-name.
+
+Example of smb.conf:
+
+[smbtest]
+path = /gpfs-test
+vfs objects = gpfs
+nfs4: mode = special
+nfs4: chown = yes
+nfs4: acedup = merge
+
+Adding "vfs objects = gpfs" to a share should be done only in case when NFS4 is really supported by the filesystem.
+(Otherwise you may get performance loss.)
+
+==================================================
+Below are some limitations listed for this module:
+==================================================
+1. When a child file or child directory is created, the results are a bit different from windows as specified below:
+
+Eg: Prent directory is set to have 2 ACES - full access for owner and everyone
+
+Default ACL for Windows: 2 aces: allow ACE for owner and everyone	
+Default ACL for GPFS: 6 aces: allow and deny ACEs for owner, group and everyone
+
+The below mentioned inheritance flags and its combinations are applied only to the owner ACE and not to everyone ACE	
+
+"fi"------>File Inherit
+"di"------>Directory Inherit
+"oi"------>Inherit Only
+
+	
+Parent dir: no inheritance flag set	
+	Windows: index=0:			GPFS(special mode): index=0:			GPFS(simple mode): index=0:
+child File: default acl: 2 aces		child file: default acl: 6 aces		child file: default acl: 6 aces
+child dir: default acl: 2 aces		child dir: default acl: 6 aces		child dir: default acl: 6 aces
+
+
+Parent dir: "fi" flag set
+	Windows: index=1:			GPFS(special mode): index=1:			GPFS(simple mode): index=1:
+child file: no flag set			child file: "fi" flag set		child file: default acl: 6 aces	
+child dir: "fioi" flag set		child dir: "fi" flag set		child dir: "fi" flag set
+
+
+Parent dir: "di" flag set
+	Windows: index=2:			GPFS(special mode): index=2:			GPFS(simple mode): index=2:
+child file: default acl: 2 aces		child file: default acl: 6 aces		child file: default acl: 6 aces
+
+
+Parent dir: "fidi" flag set
+	Windows: index=3:			GPFS(special mode): index=3:			GPFS(simple mode): index=3:
+child file: no flag set			child file: "fidi" flag set		child file: default acl: 6 aces
+
+
+Parent dir: "fioi" flag set	
+	Windows: index=4:			GPFS(special mode): index=4:			GPFS(simple mode): index=4:
+child file: no flag set			child file: "fi" flag set		child file: default acl: 6 aces
+child dir: "fioi" flag set		child dir: "fi" flag set		child dir: "fi" flag set
+
+
+Parent dir: "dioi" flag set
+	Windows: index=5:			GPFS(special mode): index=5:			GPFS(simple mode): index=5:
+child file: default acl: 2 aces		child file: default acl: 6 aces		child file: default acl: 6 aces
+
+
+Parent dir: "fidioi" flag set
+	Windows: index=6:			GPFS(special mode): index=6:			GPFS(simple mode): index=6:
+child file: no flag set			child file: "fidi" flag set		child file: default acl: 6 aces