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-rw-r--r--include/uapi/linux/fcntl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h
index a5bebe7c4400..f291ab4f94eb 100644
--- a/include/uapi/linux/fcntl.h
+++ b/include/uapi/linux/fcntl.h
@@ -110,6 +110,7 @@
#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. */