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, 96 insertions, 1 deletions

diff --git a/include/linux/sunrpc/xdrgen/nfs4_1.h b/include/linux/sunrpc/xdrgen/nfs4_1.h
index 5283739242c7..4ac54bdbd335 100644
--- a/include/linux/sunrpc/xdrgen/nfs4_1.h
+++ b/include/linux/sunrpc/xdrgen/nfs4_1.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /* Generated by xdrgen. Manual edits will be lost. */
 /* XDR specification file: ../../Documentation/sunrpc/xdr/nfs4_1.x */
-/* XDR specification modification time: Thu Jan  8 23:11:48 2026 */
+/* XDR specification modification time: Thu Jan  8 23:12:07 2026 */
 
 #ifndef _LINUX_XDRGEN_NFS4_1_DEF_H
 #define _LINUX_XDRGEN_NFS4_1_DEF_H
@@ -18,6 +18,14 @@ typedef struct {
 	uint32_t *element;
 } bitmap4;
 
+typedef opaque utf8string;
+
+typedef utf8string utf8str_cis;
+
+typedef utf8string utf8str_cs;
+
+typedef utf8string utf8str_mixed;
+
 struct nfstime4 {
 	int64_t seconds;
 	uint32_t nseconds;
@@ -141,11 +149,85 @@ enum open_delegation_type4 {
 
 typedef enum open_delegation_type4 open_delegation_type4;
 
+enum aclmodel4 {
+	ACL_MODEL_NFS4 = 1,
+	ACL_MODEL_POSIX_DRAFT = 2,
+	ACL_MODEL_NONE = 3,
+};
+
+typedef enum aclmodel4 aclmodel4;
+
+enum aclscope4 {
+	ACL_SCOPE_FILE_OBJECT = 1,
+	ACL_SCOPE_FILE_SYSTEM = 2,
+	ACL_SCOPE_SERVER = 3,
+};
+
+typedef enum aclscope4 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,
+};
+
+typedef enum posixacetag4 posixacetag4;
+
+typedef uint32_t posixaceperm4;
+
+enum { POSIXACE4_PERM_EXECUTE = 0x00000001 };
+
+enum { POSIXACE4_PERM_WRITE = 0x00000002 };
+
+enum { 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 struct {
+	u32 count;
+	struct posixace4 *element;
+} fattr4_posix_default_acl;
+
+typedef struct {
+	u32 count;
+	struct posixace4 *element;
+} fattr4_posix_access_acl;
+
+/*
+ * New for POSIX ACL extension
+ */
+
+enum { FATTR4_ACL_TRUEFORM = 89 };
+
+enum { FATTR4_ACL_TRUEFORM_SCOPE = 90 };
+
+enum { FATTR4_POSIX_DEFAULT_ACL = 91 };
+
+enum { FATTR4_POSIX_ACCESS_ACL = 92 };
+
 #define NFS4_int64_t_sz                 \
 	(XDR_hyper)
 #define NFS4_uint32_t_sz                \
 	(XDR_unsigned_int)
 #define NFS4_bitmap4_sz                 (XDR_unsigned_int)
+#define NFS4_utf8string_sz              (XDR_unsigned_int)
+#define NFS4_utf8str_cis_sz             \
+	(NFS4_utf8string_sz)
+#define NFS4_utf8str_cs_sz              \
+	(NFS4_utf8string_sz)
+#define NFS4_utf8str_mixed_sz           \
+	(NFS4_utf8string_sz)
 #define NFS4_nfstime4_sz                \
 	(NFS4_int64_t_sz + NFS4_uint32_t_sz)
 #define NFS4_fattr4_offline_sz          \
@@ -164,5 +246,18 @@ typedef enum open_delegation_type4 open_delegation_type4;
 #define NFS4_fattr4_time_deleg_modify_sz \
 	(NFS4_nfstime4_sz)
 #define NFS4_open_delegation_type4_sz   (XDR_int)
+#define NFS4_aclmodel4_sz               (XDR_int)
+#define NFS4_aclscope4_sz               (XDR_int)
+#define NFS4_posixacetag4_sz            (XDR_int)
+#define NFS4_posixaceperm4_sz           \
+	(NFS4_uint32_t_sz)
+#define NFS4_posixace4_sz               \
+	(NFS4_posixacetag4_sz + NFS4_posixaceperm4_sz + NFS4_utf8str_mixed_sz)
+#define NFS4_fattr4_acl_trueform_sz     \
+	(NFS4_aclmodel4_sz)
+#define NFS4_fattr4_acl_trueform_scope_sz \
+	(NFS4_aclscope4_sz)
+#define NFS4_fattr4_posix_default_acl_sz (XDR_unsigned_int)
+#define NFS4_fattr4_posix_access_acl_sz (XDR_unsigned_int)
 
 #endif /* _LINUX_XDRGEN_NFS4_1_DEF_H */