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05 April 2024, 19:05:47 UTC
Revision 0097c18e459c5ca5d169750eaed99fd272606c1a authored by Linus Torvalds on 19 February 2023, 01:46:50 UTC, committed by Linus Torvalds on 19 February 2023, 01:46:50 UTC 
Merge tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
 
Pull timer fix from Thomas Gleixner:
 "A fix for a long standing issue in the alarmtimer code.

  Posix-timers armed with a short interval with an ignored signal result
  in an unpriviledged DoS. Due to the ignored signal the timer switches
  into self rearm mode. This issue had been "fixed" before but a rework
  of the alarmtimer code 5 years ago lost that workaround.

  There is no real good solution for this issue, which is also worked
  around in the core posix-timer code in the same way, but it certainly
  moved way up on the ever growing todo list"

* tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Prevent starvation by small intervals and SIG_IGN
2 parent s a33d946 + d125d13
Raw File
Tip revision: 0097c18e459c5ca5d169750eaed99fd272606c1a authored by Linus Torvalds on 19 February 2023, 01:46:50 UTC
Merge tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Tip revision: 0097c18
no-block.c 
// SPDX-License-Identifier: GPL-2.0-or-later
/* no-block.c: implementation of routines required for non-BLOCK configuration
 *
 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/kernel.h>
#include <linux/fs.h>

static int no_blkdev_open(struct inode * inode, struct file * filp)
{
	return -ENODEV;
}

const struct file_operations def_blk_fops = {
	.open		= no_blkdev_open,
	.llseek		= noop_llseek,
};
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