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tools headers: Sync uapi/linux/fcntl.h with the kernel source

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To pick up the changes in this cset:

  3941e37f62 uapi/fcntl: add FD_PIDFS_ROOT
  cd5d200632 uapi/fcntl: add FD_INVALID
  67fcec2919 fcntl/pidfd: redefine PIDFD_SELF_THREAD_GROUP
  a4c746f068 uapi/fcntl: mark range as reserved

This addresses these 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/uapi/README for further details.

Cc: Christian Brauner <brauner@kernel.org>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim 2025-08-18 10:32:18 -07:00
parent 52174e0eb1
commit b18aabe283
1 changed files with 18 additions and 0 deletions
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18
tools/perf/trace/beauty/include/uapi/linux/fcntl.h
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@ -90,10 +90,28 @@
#define DN_ATTRIB 0x00000020 /* File changed attibutes */
#define DN_MULTISHOT 0x80000000 /* Don't remove notifier */
/* Reserved kernel ranges [-100], [-10000, -40000]. */
#define AT_FDCWD -100 /* Special value for dirfd used to
indicate openat should use the
current working directory. */
/*
* The concept of process and threads in userland and the kernel is a confusing
* one - within the kernel every thread is a 'task' with its own individual PID,
* however from userland's point of view threads are grouped by a single PID,
* which is that of the 'thread group leader', typically the first thread
* spawned.
*
* To cut the Gideon knot, for internal kernel usage, we refer to
* PIDFD_SELF_THREAD to refer to the current thread (or task from a kernel
* perspective), and PIDFD_SELF_THREAD_GROUP to refer to the current thread
* group leader...
*/
#define PIDFD_SELF_THREAD -10000 /* Current thread. */
#define PIDFD_SELF_THREAD_GROUP -10001 /* Current thread group leader. */
#define FD_PIDFS_ROOT -10002 /* Root of the pidfs filesystem */
#define FD_INVALID -10009 /* Invalid file descriptor: -10000 - EBADF = -10009 */
/* Generic flags for the *at(2) family of syscalls. */