Add RPC language definition of NFSv4 POSIX ACL extension

The language definition was extracted from the new
draft-ietf-nfsv4-posix-acls specification. This ensures good
constant and type name alignment between the spec and the Linux
kernel source code, and brings in some basic XDR utilities for
handling NFSv4 POSIX draft ACLs.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/Documentation/sunrpc/xdr/nfs4_1.x b/Documentation/sunrpc/xdr/nfs4_1.x
index ca95150a3a29..5b45547b2ebc 100644
--- a/Documentation/sunrpc/xdr/nfs4_1.x
+++ b/Documentation/sunrpc/xdr/nfs4_1.x
@@ -53,6 +53,11 @@ typedef unsigned int	uint32_t;
  */
 typedef uint32_t	bitmap4<>;
 
+typedef opaque		utf8string<>;
+typedef utf8string	utf8str_cis;
+typedef utf8string	utf8str_cs;
+typedef utf8string	utf8str_mixed;
+
 /*
  * Timeval
  */
@@ -184,3 +189,59 @@ enum open_delegation_type4 {
        OPEN_DELEGATE_READ_ATTRS_DELEG      = 4,
        OPEN_DELEGATE_WRITE_ATTRS_DELEG     = 5
 };
+
+
+/*
+ * The following content was extracted from draft-ietf-nfsv4-posix-acls
+ */
+
+enum aclmodel4 {
+	ACL_MODEL_NFS4		= 1,
+	ACL_MODEL_POSIX_DRAFT	= 2,
+	ACL_MODEL_NONE		= 3
+};
+pragma public aclmodel4;
+
+enum aclscope4 {
+	ACL_SCOPE_FILE_OBJECT	= 1,
+	ACL_SCOPE_FILE_SYSTEM	= 2,
+	ACL_SCOPE_SERVER	= 3
+};
+pragma public aclscope4;
+
+enum posixacetag4 {
+	POSIXACE4_TAG_USER_OBJ	= 1,
+	POSIXACE4_TAG_USER	= 2,
+	POSIXACE4_TAG_GROUP_OBJ	= 3,
+	POSIXACE4_TAG_GROUP	= 4,
+	POSIXACE4_TAG_MASK	= 5,
+	POSIXACE4_TAG_OTHER	= 6
+};
+pragma public posixacetag4;
+
+typedef uint32_t	posixaceperm4;
+pragma public posixaceperm4;
+
+/* Bit definitions for posixaceperm4. */
+const POSIXACE4_PERM_EXECUTE	= 0x00000001;
+const POSIXACE4_PERM_WRITE	= 0x00000002;
+const POSIXACE4_PERM_READ	= 0x00000004;
+
+struct posixace4 {
+	posixacetag4		tag;
+	posixaceperm4		perm;
+	utf8str_mixed		who;
+};
+
+typedef aclmodel4	fattr4_acl_trueform;
+typedef aclscope4	fattr4_acl_trueform_scope;
+typedef posixace4	fattr4_posix_default_acl<>;
+typedef posixace4	fattr4_posix_access_acl<>;
+
+%/*
+% * New for POSIX ACL extension
+% */
+const FATTR4_ACL_TRUEFORM	= 89;
+const FATTR4_ACL_TRUEFORM_SCOPE	= 90;
+const FATTR4_POSIX_DEFAULT_ACL	= 91;
+const FATTR4_POSIX_ACCESS_ACL	= 92;