[PATCH RFC nfs-utils v2 01/10] nfsdctl: sync nfsd_netlink.h with the kernel

[Jeff Layton <jlayton@kernel.org>]

Import the attributes that let a caller own rpcbind registration:

- NFSD_A_SERVER_SOCK_USERSPACE_RPCBIND on the request
- NFSD_A_SERVER_SOCK_RPCBIND, and the NFSD_A_RPCBIND_* nest, on the reply

The file comes from include/uapi/linux/nfsd_netlink.h. No code reads the
new attributes yet.

Bump the USE_SYSTEM_NFSD_NETLINK_H probe to one of the new attributes.
It tested NFSD_CMD_SERVER_STATS_GET, which has been in the uapi header
since v6.9, so any host with headers that new picks the system copy and
loses everything imported here.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 configure.ac                   |  2 +-
 support/include/nfsd_netlink.h | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 2ce1e129e5d4..d9d268975d7d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,7 +259,7 @@ AC_CHECK_HEADERS(linux/nfsd_netlink.h)
 
 # ensure the system netlink headers have the latest features
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <linux/nfsd_netlink.h>]],
-			                   [[int foo = NFSD_CMD_SERVER_STATS_GET;]])],
+			                   [[int foo = NFSD_A_SERVER_SOCK_USERSPACE_RPCBIND;]])],
 			   [AC_DEFINE([USE_SYSTEM_NFSD_NETLINK_H], 1,
 				      ["Use system's linux/nfsd_netlink.h"])])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <linux/lockd_netlink.h>]],
diff --git a/support/include/nfsd_netlink.h b/support/include/nfsd_netlink.h
index 87da1d0bb21e..400322857d16 100644
--- a/support/include/nfsd_netlink.h
+++ b/support/include/nfsd_netlink.h
@@ -50,6 +50,13 @@ enum nfsd_xprtsec_mode {
 	NFSD_XPRTSEC_MODE_MTLS = 4,
 };
 
+/*
+ * Constraints that apply to an rpcbind registration.
+ */
+enum nfsd_rpcbind_flags {
+	NFSD_RPCBIND_FLAGS_NO_UDP = 1,
+};
+
 enum {
 	NFSD_A_CACHE_NOTIFY_CACHE_TYPE = 1,
 
@@ -113,8 +120,19 @@ enum {
 	NFSD_A_SOCK_MAX = (__NFSD_A_SOCK_MAX - 1)
 };
 
+enum {
+	NFSD_A_RPCBIND_PROGRAM = 1,
+	NFSD_A_RPCBIND_VERSION,
+	NFSD_A_RPCBIND_FLAGS,
+
+	__NFSD_A_RPCBIND_MAX,
+	NFSD_A_RPCBIND_MAX = (__NFSD_A_RPCBIND_MAX - 1)
+};
+
 enum {
 	NFSD_A_SERVER_SOCK_ADDR = 1,
+	NFSD_A_SERVER_SOCK_USERSPACE_RPCBIND,
+	NFSD_A_SERVER_SOCK_RPCBIND,
 
 	__NFSD_A_SERVER_SOCK_MAX,
 	NFSD_A_SERVER_SOCK_MAX = (__NFSD_A_SERVER_SOCK_MAX - 1)

-- 
2.55.0