xnu-792.12.6.tar.gz

[apple/xnu.git] / bsd / man / man2 / fcntl.2

diff --git a/bsd/man/man2/fcntl.2 b/bsd/man/man2/fcntl.2
index 1916e0fdc8bb51c64ff1f23334ebe313bd8f0150..12fd284f432c8646502a7f522968c8c10985c013 100644 (file)
--- a/bsd/man/man2/fcntl.2
+++ b/bsd/man/man2/fcntl.2
@@ -152,6 +152,19 @@ Get disk device information.
 Currently this only includes the
 disk device address that corresponds
 to the current file offset.
+.It Dv F_FULLFSYNC
+Does the same thing as
+.Xr fsync 2
+then asks the drive to
+flush all buffered data to
+the permanent storage device
+.Fa ( arg
+is ignored).
+This is currently
+only implemented on HFS filesystems and
+the operation may take quite a while to
+complete.  Certain FireWire drives have
+also been known to ignore this request.
 .El
 .Pp
 The flags for the