[PATCH 03/11] tools headers: Sync UAPI linux/fcntl.h with kernel sources

From: Namhyung Kim

Date: Mon Dec 22 2025 - 17:57:21 EST


To pick up changes from:

fe93446b5ebdaa89 ("vfs: use UAPI types for new struct delegation definition")
4be9e04ebf75a5c4 ("vfs: add needed headers for new struct delegation definition")
1602bad16d7df82f ("vfs: expose delegation support to userland")

This should be used to beautify fcntl syscall arguments and it addresses
these tools/perf build warnings:

Warning: Kernel ABI header differences:
diff -u tools/perf/trace/beauty/include/uapi/linux/fcntl.h include/uapi/linux/fcntl.h

Please see tools/include/README.kernel-copies.

Cc: linux-fsdevel@xxxxxxxxxxxxxxx
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/trace/beauty/include/uapi/linux/fcntl.h | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/tools/perf/trace/beauty/include/uapi/linux/fcntl.h b/tools/perf/trace/beauty/include/uapi/linux/fcntl.h
index 3741ea1b73d85000..aadfbf6e0cb3a004 100644
--- a/tools/perf/trace/beauty/include/uapi/linux/fcntl.h
+++ b/tools/perf/trace/beauty/include/uapi/linux/fcntl.h
@@ -4,6 +4,7 @@

#include <asm/fcntl.h>
#include <linux/openat2.h>
+#include <linux/types.h>

#define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)
#define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
@@ -79,6 +80,17 @@
*/
#define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET

+/* Set/Get delegations */
+#define F_GETDELEG (F_LINUX_SPECIFIC_BASE + 15)
+#define F_SETDELEG (F_LINUX_SPECIFIC_BASE + 16)
+
+/* Argument structure for F_GETDELEG and F_SETDELEG */
+struct delegation {
+ __u32 d_flags; /* Must be 0 */
+ __u16 d_type; /* F_RDLCK, F_WRLCK, F_UNLCK */
+ __u16 __pad; /* Must be 0 */
+};
+
/*
* Types of directory notifications that may be requested.
*/
--
2.52.0.351.gbe84eed79e-goog