From e3d14af155fb84890a32fad7f7706967ac5bc7d9 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Wed, 14 Dec 2005 15:54:33 +0000 Subject: * fhandler.cc (fhandler_base::open_9x): Handle O_SYNC and O_DIRECT flags. (fhandler_base::open): Ditto. * fhandler_floppy.cc (fhandler_dev_floppy::open): Don't allocate devbuf in O_DIRECT case. * fhandler_raw.cc (fhandler_dev_raw::ioctl): Don't allow buffer changes in O_DIRECT case. Allow returning a buffer size 0, which indicates O_DIRECT. * fhandler_tape.cc (fhandler_dev_tape::open): Use O_SYNC flag to hand down the !buffer_writes case. Don't allocate devbuf in O_DIRECT case. (fhandler_dev_tape::raw_read): Don't mess with devbuf if it's NULL. * include/fcntl.h: Define _FDIRECT, O_DIRECT, O_DSYNC and O_RSYNC. * include/cygwin/version.h: Bump API minor version. --- winsup/cygwin/fhandler_floppy.cc | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'winsup/cygwin/fhandler_floppy.cc') diff --git a/winsup/cygwin/fhandler_floppy.cc b/winsup/cygwin/fhandler_floppy.cc index 3bc9f51..a8b99b2 100644 --- a/winsup/cygwin/fhandler_floppy.cc +++ b/winsup/cygwin/fhandler_floppy.cc @@ -161,9 +161,10 @@ fhandler_dev_floppy::open (int flags, mode_t) relatively big value increases performance by means. The new ioctl call with 'rdevio.h' header file supports changing this value. - Let's try to be smart: Let's take a multiple of typical tar and cpio - buffer sizes by default. */ - devbufsiz = 61440L; + As default buffer size, we're using some value which is a multiple of + the typical tar and cpio buffer sizes, Except O_DIRECT is set, in which + case we're not buffering at all. */ + devbufsiz = (flags & O_DIRECT) ? 0L : 61440L; int ret = fhandler_dev_raw::open (flags); if (ret && get_drive_info (NULL)) -- cgit v1.1