Merge tag 'nfsd-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:

 - Mike Snitzer's mechanism for disabling I/O caching introduced in
   v6.18 is extended to include using direct I/O. The goal is to further
   reduce the memory footprint consumed by NFS clients accessing large
   data sets via NFSD.

 - The NFSD community adopted a maintainer entry profile during this
   cycle. See

      Documentation/filesystems/nfs/nfsd-maintainer-entry-profile.rst

 - Work continues on hardening NFSD's implementation of the pNFS block
   layout type. This type enables pNFS clients to directly access the
   underlying block devices that contain an exported file system,
   reducing server overhead and increasing data throughput.

 - The remaining patches are clean-ups and minor optimizations. Many
   thanks to the contributors, reviewers, testers, and bug reporters who
   participated during the v6.19 NFSD development cycle.

* tag 'nfsd-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (38 commits)
  NFSD: nfsd-io-modes: Separate lists
  NFSD: nfsd-io-modes: Wrap shell snippets in literal code blocks
  NFSD: Add toctree entry for NFSD IO modes docs
  NFSD: add Documentation/filesystems/nfs/nfsd-io-modes.rst
  NFSD: Implement NFSD_IO_DIRECT for NFS WRITE
  NFSD: Make FILE_SYNC WRITEs comply with spec
  NFSD: Add trace point for SCSI fencing operation.
  NFSD: use correct reservation type in nfsd4_scsi_fence_client
  xdrgen: Don't generate unnecessary semicolon
  xdrgen: Fix union declarations
  NFSD: don't start nfsd if sv_permsocks is empty
  xdrgen: handle _XdrString in union encoder/decoder
  xdrgen: Fix the variable-length opaque field decoder template
  xdrgen: Make the xdrgen script location-independent
  xdrgen: Generalize/harden pathname construction
  lockd: don't allow locking on reexported NFSv2/3
  MAINTAINERS: add a nfsd blocklayout reviewer
  nfsd: Use MD5 library instead of crypto_shash
  nfsd: stop pretending that we cache the SEQUENCE reply.
  NFS: nfsd-maintainer-entry-profile: Inline function name prefixes
  ...

24 files changed, 65 insertions, 33 deletions

diff --git a/tools/net/sunrpc/xdrgen/generators/__init__.py b/tools/net/sunrpc/xdrgen/generators/__init__.py
index b98574a36a4a..e22632cf38fb 100644
--- a/tools/net/sunrpc/xdrgen/generators/__init__.py
+++ b/tools/net/sunrpc/xdrgen/generators/__init__.py
@@ -2,7 +2,7 @@
 
 """Define a base code generator class"""
 
-import sys
+from pathlib import Path
 from jinja2 import Environment, FileSystemLoader, Template
 
 from xdr_ast import _XdrAst, Specification, _RpcProgram, _XdrTypeSpecifier
@@ -14,8 +14,11 @@ def create_jinja2_environment(language: str, xdr_type: str) -> Environment:
     """Open a set of templates based on output language"""
     match language:
         case "C":
+            templates_dir = (
+                Path(__file__).parent.parent / "templates" / language / xdr_type
+            )
             environment = Environment(
-                loader=FileSystemLoader(sys.path[0] + "/templates/C/" + xdr_type + "/"),
+                loader=FileSystemLoader(templates_dir),
                 trim_blocks=True,
                 lstrip_blocks=True,
             )
@@ -48,9 +51,7 @@ def find_xdr_program_name(root: Specification) -> str:
 
 def header_guard_infix(filename: str) -> str:
     """Extract the header guard infix from the specification filename"""
-    basename = filename.split("/")[-1]
-    program = basename.replace(".x", "")
-    return program.upper()
+    return Path(filename).stem.upper()
 
 
 def kernel_c_type(spec: _XdrTypeSpecifier) -> str:
diff --git a/tools/net/sunrpc/xdrgen/generators/union.py b/tools/net/sunrpc/xdrgen/generators/union.py
index 2cca00e279cd..ad1f214ef22a 100644
--- a/tools/net/sunrpc/xdrgen/generators/union.py
+++ b/tools/net/sunrpc/xdrgen/generators/union.py
@@ -8,7 +8,7 @@ from jinja2 import Environment
 from generators import SourceGenerator
 from generators import create_jinja2_environment, get_jinja2_template
 
-from xdr_ast import _XdrBasic, _XdrUnion, _XdrVoid, get_header_name
+from xdr_ast import _XdrBasic, _XdrUnion, _XdrVoid, _XdrString, get_header_name
 from xdr_ast import _XdrDeclaration, _XdrCaseSpec, public_apis, big_endian
 
 
@@ -40,13 +40,20 @@ def emit_union_case_spec_definition(
     """Emit a definition for an XDR union's case arm"""
     if isinstance(node.arm, _XdrVoid):
         return
-    assert isinstance(node.arm, _XdrBasic)
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+        classifier = ""
+    else:
+        type_name = node.arm.spec.type_name
+        classifier = node.arm.spec.c_classifier
+
+    assert isinstance(node.arm, (_XdrBasic, _XdrString))
     template = get_jinja2_template(environment, "definition", "case_spec")
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
-            classifier=node.arm.spec.c_classifier,
+            type=type_name,
+            classifier=classifier,
         )
     )
 
@@ -84,6 +91,12 @@ def emit_union_case_spec_decoder(
 
     if isinstance(node.arm, _XdrVoid):
         return
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+        classifier = ""
+    else:
+        type_name = node.arm.spec.type_name
+        classifier = node.arm.spec.c_classifier
 
     if big_endian_discriminant:
         template = get_jinja2_template(environment, "decoder", "case_spec_be")
@@ -92,13 +105,13 @@ def emit_union_case_spec_decoder(
     for case in node.values:
         print(template.render(case=case))
 
-    assert isinstance(node.arm, _XdrBasic)
+    assert isinstance(node.arm, (_XdrBasic, _XdrString))
     template = get_jinja2_template(environment, "decoder", node.arm.template)
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
-            classifier=node.arm.spec.c_classifier,
+            type=type_name,
+            classifier=classifier,
         )
     )
 
@@ -169,7 +182,10 @@ def emit_union_case_spec_encoder(
 
     if isinstance(node.arm, _XdrVoid):
         return
-
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+    else:
+        type_name = node.arm.spec.type_name
     if big_endian_discriminant:
         template = get_jinja2_template(environment, "encoder", "case_spec_be")
     else:
@@ -181,7 +197,7 @@ def emit_union_case_spec_encoder(
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
+            type=type_name,
         )
     )
 
diff --git a/tools/net/sunrpc/xdrgen/templates/C/pointer/decoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/pointer/decoder/close.j2
index 5bf010665f84..3dbd724d7f17 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/pointer/decoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/pointer/decoder/close.j2
@@ -1,3 +1,3 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/pointer/encoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/pointer/encoder/close.j2
index 5bf010665f84..3dbd724d7f17 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/pointer/encoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/pointer/encoder/close.j2
@@ -1,3 +1,3 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/close.j2
index 5bf010665f84..3dbd724d7f17 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/close.j2
@@ -1,3 +1,3 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/variable_length_opaque.j2 b/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/variable_length_opaque.j2
index 9a814de54ae8..65698e20d8cd 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/variable_length_opaque.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/struct/decoder/variable_length_opaque.j2
@@ -2,5 +2,5 @@
 {% if annotate %}
 	/* member {{ name }} (variable-length opaque) */
 {% endif %}
-	if (!xdrgen_decode_opaque(xdr, (opaque *)ptr, {{ maxsize }}))
+	if (!xdrgen_decode_opaque(xdr, &ptr->{{ name }}, {{ maxsize }}))
 		return false;
diff --git a/tools/net/sunrpc/xdrgen/templates/C/struct/encoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/struct/encoder/close.j2
index 5bf010665f84..3dbd724d7f17 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/struct/encoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/struct/encoder/close.j2
@@ -1,3 +1,3 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/basic.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/basic.j2
index da4709403dc9..b215e157dfa7 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/basic.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/basic.j2
@@ -14,4 +14,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ name }} *ptr)
 	/* (basic) */
 {% endif %}
 	return xdrgen_decode_{{ type }}(xdr, ptr);
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_array.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_array.j2
index d7c80e472fe3..c8953719e626 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_array.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_array.j2
@@ -22,4 +22,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ classifier }}{{ name }} *ptr
 			return false;
 	}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_opaque.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_opaque.j2
index bdc7bd24ffb1..c854fc8c74e3 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_opaque.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/fixed_length_opaque.j2
@@ -14,4 +14,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ classifier }}{{ name }} *ptr
 	/* (fixed-length opaque) */
 {% endif %}
 	return xdr_stream_decode_opaque_fixed(xdr, ptr, {{ size }}) == 0;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/string.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/string.j2
index 56c5a17d6a70..bcbc1758aae9 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/string.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/string.j2
@@ -14,4 +14,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ classifier }}{{ name }} *ptr
 	/* (variable-length string) */
 {% endif %}
 	return xdrgen_decode_string(xdr, ptr, {{ maxsize }});
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_array.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_array.j2
index e74ffdd98463..a59cc1f38eed 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_array.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_array.j2
@@ -23,4 +23,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ classifier }}{{ name }} *ptr
 		if (!xdrgen_decode_{{ type }}(xdr, &ptr->element[i]))
 			return false;
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_opaque.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_opaque.j2
index f28f8b228ad5..eb05f53e1041 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_opaque.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/decoder/variable_length_opaque.j2
@@ -14,4 +14,4 @@ xdrgen_decode_{{ name }}(struct xdr_stream *xdr, {{ classifier }}{{ name }} *ptr
 	/* (variable-length opaque) */
 {% endif %}
 	return xdrgen_decode_opaque(xdr, ptr, {{ maxsize }});
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/basic.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/basic.j2
index 35effe67e4ef..0d21dd0b723a 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/basic.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/basic.j2
@@ -18,4 +18,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 	/* (basic) */
 {% endif %}
 	return xdrgen_encode_{{ type }}(xdr, value);
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_array.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_array.j2
index 95202ad5ad2d..ec8cd6509514 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_array.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_array.j2
@@ -22,4 +22,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 			return false;
 	}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_opaque.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_opaque.j2
index 9c66a11b9912..b53fa87e1858 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_opaque.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/fixed_length_opaque.j2
@@ -14,4 +14,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 	/* (fixed-length opaque) */
 {% endif %}
 	return xdr_stream_encode_opaque_fixed(xdr, value, {{ size }}) >= 0;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/string.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/string.j2
index 3d490ff180d0..28b81f1d0bd6 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/string.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/string.j2
@@ -14,4 +14,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 	/* (variable-length string) */
 {% endif %}
 	return xdr_stream_encode_opaque(xdr, value.data, value.len) >= 0;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_array.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_array.j2
index 2d2384f64918..ff093c281d51 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_array.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_array.j2
@@ -27,4 +27,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 {% endif %}
 			return false;
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_opaque.j2 b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_opaque.j2
index 8508f13c95b9..2e89592fa702 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_opaque.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/typedef/encoder/variable_length_opaque.j2
@@ -14,4 +14,4 @@ xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const {{ classifier }}{{ name }
 	/* (variable-length opaque) */
 {% endif %}
 	return xdr_stream_encode_opaque(xdr, value.data, value.len) >= 0;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/union/declaration/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/union/declaration/close.j2
new file mode 100644
index 000000000000..816291184e8c
--- /dev/null
+++ b/tools/net/sunrpc/xdrgen/templates/C/union/declaration/close.j2
@@ -0,0 +1,4 @@
+{# SPDX-License-Identifier: GPL-2.0 #}
+
+bool xdrgen_decode_{{ name }}(struct xdr_stream *xdr, struct {{ name }} *ptr);
+bool xdrgen_encode_{{ name }}(struct xdr_stream *xdr, const struct {{ name }} *value);
diff --git a/tools/net/sunrpc/xdrgen/templates/C/union/decoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/union/decoder/close.j2
index fdc2dfd1843b..39d8d6c5094d 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/union/decoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/union/decoder/close.j2
@@ -1,4 +1,4 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/union/encoder/close.j2 b/tools/net/sunrpc/xdrgen/templates/C/union/encoder/close.j2
index fdc2dfd1843b..39d8d6c5094d 100644
--- a/tools/net/sunrpc/xdrgen/templates/C/union/encoder/close.j2
+++ b/tools/net/sunrpc/xdrgen/templates/C/union/encoder/close.j2
@@ -1,4 +1,4 @@
 {# SPDX-License-Identifier: GPL-2.0 #}
 	}
 	return true;
-};
+}
diff --git a/tools/net/sunrpc/xdrgen/templates/C/union/encoder/string.j2 b/tools/net/sunrpc/xdrgen/templates/C/union/encoder/string.j2
new file mode 100644
index 000000000000..2f035a64f1f4
--- /dev/null
+++ b/tools/net/sunrpc/xdrgen/templates/C/union/encoder/string.j2
@@ -0,0 +1,6 @@
+{# SPDX-License-Identifier: GPL-2.0 #}
+{% if annotate %}
+		/* member {{ name }} (variable-length string) */
+{% endif %}
+		if (!xdrgen_encode_string(xdr, ptr->u.{{ name }}, {{ maxsize }}))
+			return false;
diff --git a/tools/net/sunrpc/xdrgen/xdrgen b/tools/net/sunrpc/xdrgen/xdrgen
index 43762be39252..3afd0547d67c 100755
--- a/tools/net/sunrpc/xdrgen/xdrgen
+++ b/tools/net/sunrpc/xdrgen/xdrgen
@@ -10,8 +10,13 @@ __license__ = "GPL-2.0 only"
 __version__ = "0.2"
 
 import sys
+from pathlib import Path
 import argparse
 
+_XDRGEN_DIR = Path(__file__).resolve().parent
+if str(_XDRGEN_DIR) not in sys.path:
+    sys.path.insert(0, str(_XDRGEN_DIR))
+
 from subcmds import definitions
 from subcmds import declarations
 from subcmds import lint