Commit b18aabe2 authored by Namhyung Kim's avatar Namhyung Kim
Browse files

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



To pick up the changes in this cset:

  3941e37f uapi/fcntl: add FD_PIDFS_ROOT
  cd5d2006 uapi/fcntl: add FD_INVALID
  67fcec29 fcntl/pidfd: redefine PIDFD_SELF_THREAD_GROUP
  a4c746f0 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: default avatarNamhyung Kim <namhyung@kernel.org>
parent 52174e0e

tools/perf/trace/beauty/include/uapi/linux/fcntl.h

+18 −0
Original line number Diff line number Diff line
@@ -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. */