This adds a new main switch "nfs" to "nfs4acl_xattr:encoding" which
enables to use NFS4 ACLs from an NFS4 mount on a Linux box. Tested with
a FreeBSD NFS4 server.

Supports both NFS 4.0 and 4.1 ACLs.

By default NFS4 servers send user and group identifiers in ACLs as
strings in the format "[USER|GROUP]@DNSDOMAIN". Some NFS4 servers
support sending identifiers as numeric strings. This module does support
this as well, the config knob "nfs4acl_xattr:nfs4_id_numeric = yes|no"
controls behaviour.

When "nfs4acl_xattr:encoding" is set to "nfs", the new option
"nfs4acl_xattr:validate_mode", which defauts to "yes" is set to "no" to
avoid checking and munging the mode on files.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

These functions will be called from another translation unit in a
subsequent commit.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

This is done as a new subsystem (either filled or empty) rather than via string
manipulation.

This will fix compile error on fedora.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>

If the Samba build directory is outside its source directory, generation
of nfs41acl_xdr.c by rpcgen leads to improper include paths to nfs41acl.h.

This happens because rpcgen is designed to produce its generated file in the
same directory as the input template. If the build directory is not located
under the source directory, this relative path will be invalid and the header
will not be found.

Example:
 src dir is ~/samba-src
 bld dir is ~/samba-bld

rpcgen will use path ../../samba-src/source3/modules/nfs41acl.x
running from ~/samba-bld/default and nfs41acl_xdr.c will contain:
 #include "../../samba-src/source3/modules/nfs41acl.h"

This behaviour is fixed through an intermediate copy of the input file to
the build directory so that rpcgen receives the path as if located in src.

Also now we avoid generation of nfs41acl_xdr.c when HAVE_RPC_XDR_H is
not defined because it will not be used as part of the vfs_nfs4acl_xattr
module.

Signed-off-by: Aliaksei Karaliou <akaraliou@panasas.com>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

This module only implements the get_real_filename function by accessing
a distinct extended attribute that is available over a glusterfs fuse
mount.

By implementing this vfs function users of a glusterfs fuse mount
achieve a much better performance in create based workloads where samba
then can avoid trying multiple case folding options to detect the real
filename.

Patch is based on an initial patch provided by
Poornima G <pgurusid@redhat.com>

Guenther

Signed-off-by: Günther Deschner <gd@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Tue Jan 22 18:37:56 CET 2019 on sn-devel-144

This fixes build error when building vfs_gpfs as static module:

ERROR: circular library dependency between smbd_base and non_posix_acls

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Signed-off-by: Thomas Nagy <tnagy@waf.io>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13549

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

This provides helper functions, which can be used by other modules,
if they don't implement a specific function.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

bison generates an C89 files which does some weired things.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>