mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-01-31 07:12:18 +00:00
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/* delayacct.h - per-task delay accounting
|
|
*
|
|
* Copyright (C) Shailabh Nagar, IBM Corp. 2006
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef _LINUX_DELAYACCT_H
|
|
#define _LINUX_DELAYACCT_H
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/slab.h>
|
|
|
|
/*
|
|
* Per-task flags relevant to delay accounting
|
|
* maintained privately to avoid exhausting similar flags in sched.h:PF_*
|
|
* Used to set current->delays->flags
|
|
*/
|
|
#define DELAYACCT_PF_SWAPIN 0x00000001 /* I am doing a swapin */
|
|
#define DELAYACCT_PF_BLKIO 0x00000002 /* I am waiting on IO */
|
|
|
|
#ifdef CONFIG_TASK_DELAY_ACCT
|
|
|
|
extern int delayacct_on; /* Delay accounting turned on/off */
|
|
extern struct kmem_cache *delayacct_cache;
|
|
extern void delayacct_init(void);
|
|
extern void __delayacct_tsk_init(struct task_struct *);
|
|
extern void __delayacct_tsk_exit(struct task_struct *);
|
|
extern void __delayacct_blkio_start(void);
|
|
extern void __delayacct_blkio_end(void);
|
|
extern int __delayacct_add_tsk(struct taskstats *, struct task_struct *);
|
|
extern __u64 __delayacct_blkio_ticks(struct task_struct *);
|
|
extern void __delayacct_freepages_start(void);
|
|
extern void __delayacct_freepages_end(void);
|
|
|
|
static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
|
|
{
|
|
if (p->delays)
|
|
return (p->delays->flags & DELAYACCT_PF_BLKIO);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline void delayacct_set_flag(int flag)
|
|
{
|
|
if (current->delays)
|
|
current->delays->flags |= flag;
|
|
}
|
|
|
|
static inline void delayacct_clear_flag(int flag)
|
|
{
|
|
if (current->delays)
|
|
current->delays->flags &= ~flag;
|
|
}
|
|
|
|
static inline void delayacct_tsk_init(struct task_struct *tsk)
|
|
{
|
|
/* reinitialize in case parent's non-null pointer was dup'ed*/
|
|
tsk->delays = NULL;
|
|
if (delayacct_on)
|
|
__delayacct_tsk_init(tsk);
|
|
}
|
|
|
|
/* Free tsk->delays. Called from bad fork and __put_task_struct
|
|
* where there's no risk of tsk->delays being accessed elsewhere
|
|
*/
|
|
static inline void delayacct_tsk_free(struct task_struct *tsk)
|
|
{
|
|
if (tsk->delays)
|
|
kmem_cache_free(delayacct_cache, tsk->delays);
|
|
tsk->delays = NULL;
|
|
}
|
|
|
|
static inline void delayacct_blkio_start(void)
|
|
{
|
|
delayacct_set_flag(DELAYACCT_PF_BLKIO);
|
|
if (current->delays)
|
|
__delayacct_blkio_start();
|
|
}
|
|
|
|
static inline void delayacct_blkio_end(void)
|
|
{
|
|
if (current->delays)
|
|
__delayacct_blkio_end();
|
|
delayacct_clear_flag(DELAYACCT_PF_BLKIO);
|
|
}
|
|
|
|
static inline int delayacct_add_tsk(struct taskstats *d,
|
|
struct task_struct *tsk)
|
|
{
|
|
if (!delayacct_on || !tsk->delays)
|
|
return 0;
|
|
return __delayacct_add_tsk(d, tsk);
|
|
}
|
|
|
|
static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
|
|
{
|
|
if (tsk->delays)
|
|
return __delayacct_blkio_ticks(tsk);
|
|
return 0;
|
|
}
|
|
|
|
static inline void delayacct_freepages_start(void)
|
|
{
|
|
if (current->delays)
|
|
__delayacct_freepages_start();
|
|
}
|
|
|
|
static inline void delayacct_freepages_end(void)
|
|
{
|
|
if (current->delays)
|
|
__delayacct_freepages_end();
|
|
}
|
|
|
|
#else
|
|
static inline void delayacct_set_flag(int flag)
|
|
{}
|
|
static inline void delayacct_clear_flag(int flag)
|
|
{}
|
|
static inline void delayacct_init(void)
|
|
{}
|
|
static inline void delayacct_tsk_init(struct task_struct *tsk)
|
|
{}
|
|
static inline void delayacct_tsk_free(struct task_struct *tsk)
|
|
{}
|
|
static inline void delayacct_blkio_start(void)
|
|
{}
|
|
static inline void delayacct_blkio_end(void)
|
|
{}
|
|
static inline int delayacct_add_tsk(struct taskstats *d,
|
|
struct task_struct *tsk)
|
|
{ return 0; }
|
|
static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
|
|
{ return 0; }
|
|
static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
|
|
{ return 0; }
|
|
static inline void delayacct_freepages_start(void)
|
|
{}
|
|
static inline void delayacct_freepages_end(void)
|
|
{}
|
|
|
|
#endif /* CONFIG_TASK_DELAY_ACCT */
|
|
|
|
#endif
|