#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/acct.h>
#include <sys/fcntl.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sched.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/syslog.h>
#include <sys/sysproto.h>
#include <sys/tty.h>
#include <sys/vnode.h>
#include <security/mac/mac_framework.h>

Include dependency graph for kern_acct.c:

Macros
#define	FLT_MANT_DIG 24 /* p */

#define	FLT_MAX_EXP 128 /* emax */

#define	ACCT_RUNNING 1 /* Accounting kthread is running. */

#define	ACCT_EXITREQ 2 /* Accounting kthread should exit. */

#define	MANT_MASK ((1 << (FLT_MANT_DIG - 1)) - 1)

#define	CALC_BITS 28

#define	LOG2_1M 20

Functions
	__FBSDID ("$FreeBSD$")

	_Static_assert (sizeof(struct acctv3) - offsetof(struct acctv3, ac_trailer)==sizeof(struct acctv2) - offsetof(struct acctv2, ac_trailer), "trailer")

	_Static_assert (sizeof(struct acctv3) - offsetof(struct acctv3, ac_len2)==sizeof(struct acctv2) - offsetof(struct acctv2, ac_len2), "len2")

static uint32_t	encode_timeval (struct timeval)

static uint32_t	encode_long (long)

static void	acctwatch (void)

static void	acct_thread (void *)

static int	acct_disable (struct thread *, int)

	SX_SYSINIT (acct, &acct_sx, "acct_sx")

	SYSCTL_INT (_kern, OID_AUTO, acct_suspend, CTLFLAG_RW, &acctsuspend, 0, "percentage of free disk space below which accounting stops")

	SYSCTL_INT (_kern, OID_AUTO, acct_resume, CTLFLAG_RW, &acctresume, 0, "percentage of free disk space above which accounting resumes")

static int	sysctl_acct_chkfreq (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern, OID_AUTO, acct_chkfreq, CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_MPSAFE, &acctchkfreq, 0, sysctl_acct_chkfreq, "I", "frequency for checking the free space")

	SYSCTL_INT (_kern, OID_AUTO, acct_configured, CTLFLAG_RD, &acct_configured, 0, "Accounting configured or not")

	SYSCTL_INT (_kern, OID_AUTO, acct_suspended, CTLFLAG_RD, &acct_suspended, 0, "Accounting suspended or not")

int	sys_acct (struct thread td, struct acct_args uap)

int	acct_process (struct thread *td)

Variables
static int	acct_configured

static int	acct_suspended

static struct vnode *	acct_vp

static struct ucred *	acct_cred

static int	acct_flags

static struct sx	acct_sx

static int	acct_state

static int	acctsuspend = 2

static int	acctresume = 4

static int	acctchkfreq = 15

Macro Definition Documentation

◆ ACCT_EXITREQ

#define ACCT_EXITREQ 2 /* Accounting kthread should exit. */

Definition at line 155 of file kern_acct.c.

◆ ACCT_RUNNING

#define ACCT_RUNNING 1 /* Accounting kthread is running. */

Definition at line 154 of file kern_acct.c.

◆ CALC_BITS

#define CALC_BITS 28

Definition at line 452 of file kern_acct.c.

◆ FLT_MANT_DIG

#define FLT_MANT_DIG 24 /* p */

Definition at line 121 of file kern_acct.c.

◆ FLT_MAX_EXP

#define FLT_MAX_EXP 128 /* emax */

Definition at line 122 of file kern_acct.c.

◆ LOG2_1M

#define LOG2_1M 20

Definition at line 455 of file kern_acct.c.

◆ MANT_MASK

#define MANT_MASK ((1 << (FLT_MANT_DIG - 1)) - 1)

Definition at line 444 of file kern_acct.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ _Static_assert() [1/2]

_Static_assert	(	sizeof(struct acctv3) - offsetof(struct acctv3, ac_len2)	= `=sizeof(struct acctv2) - offsetof(struct acctv2, ac_len2)`,
		"len2"
	)

◆ _Static_assert() [2/2]

_Static_assert	(	sizeof(struct acctv3) - offsetof(struct acctv3, ac_trailer)	= `=sizeof(struct acctv2) - offsetof(struct acctv2, ac_trailer)`,
		"trailer"
	)

◆ acct_disable()

static int acct_disable	(	struct thread *	td,
		int	logging
	)

static

Definition at line 314 of file kern_acct.c.

References acct_configured, acct_cred, acct_flags, acct_sx, acct_vp, crfree(), log(), and vn_close().

Referenced by acctwatch(), and sys_acct().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ acct_process()

int acct_process ( struct thread * td )

Definition at line 337 of file kern_acct.c.

References acct_cred, acct_suspended, acct_sx, acct_vp, encode_long(), encode_timeval(), getboottime(), hz, microuptime(), proctree_lock, rufetchcalc(), st, tick, timevaladd(), timevalsub(), tty_udev(), and vn_rdwr().

Referenced by exit1().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ acct_thread()

static void acct_thread ( void * dummy )

static

Definition at line 604 of file kern_acct.c.

References ACCT_EXITREQ, ACCT_RUNNING, acct_state, acct_sx, acctchkfreq, acctwatch(), hz, kproc_exit(), and sched_prio().

Referenced by sys_acct().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ acctwatch()

static void acctwatch ( void )

static

Definition at line 548 of file kern_acct.c.

References acct_disable(), ACCT_EXITREQ, acct_state, acct_suspended, acct_sx, acct_vp, acctresume, acctsuspend, free(), log(), and malloc().

Referenced by acct_thread().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ encode_long()

static uint32_t encode_long ( long val )

static

Definition at line 513 of file kern_acct.c.

References FLT_MANT_DIG, FLT_MAX_EXP, log(), MANT_MASK, and printf().

Referenced by acct_process().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ encode_timeval()

static uint32_t encode_timeval ( struct timeval tv )

static

Definition at line 463 of file kern_acct.c.

References CALC_BITS, FLT_MANT_DIG, FLT_MAX_EXP, LOG2_1M, MANT_MASK, and printf().

Referenced by acct_process().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ SX_SYSINIT()

SX_SYSINIT	(	acct	,
		&	acct_sx,
		"acct_sx"
	)

◆ sys_acct()

int sys_acct	(	struct thread *	td,
		struct acct_args *	uap
	)

Definition at line 205 of file kern_acct.c.

References acct_configured, acct_cred, acct_disable(), ACCT_EXITREQ, acct_flags, ACCT_RUNNING, acct_state, acct_suspended, acct_sx, acct_thread(), acct_vp, crhold(), flags, kproc_create(), log(), NDFREE(), priv_check(), vn_close(), vn_open(), and wakeup().

Here is the call graph for this function:

◆ sysctl_acct_chkfreq()

static int sysctl_acct_chkfreq ( SYSCTL_HANDLER_ARGS )

static

Definition at line 171 of file kern_acct.c.

References acctchkfreq, and value.

◆ SYSCTL_INT() [1/4]

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		acct_configured	,
		CTLFLAG_RD	,
		&	acct_configured,
		0	,
		"Accounting configured or not"
	)

◆ SYSCTL_INT() [2/4]

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		acct_resume	,
		CTLFLAG_RW	,
		&	acctresume,
		0	,
		"percentage of free disk space above which accounting resumes"
	)

◆ SYSCTL_INT() [3/4]

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		acct_suspend	,
		CTLFLAG_RW	,
		&	acctsuspend,
		0	,
		"percentage of free disk space below which accounting stops"
	)

◆ SYSCTL_INT() [4/4]

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		acct_suspended	,
		CTLFLAG_RD	,
		&	acct_suspended,
		0	,
		"Accounting suspended or not"
	)

◆ SYSCTL_PROC()

SYSCTL_PROC	(	_kern	,
		OID_AUTO	,
		acct_chkfreq	,
		CTLTYPE_INT\|CTLFLAG_RW\|	CTLFLAG_MPSAFE,
		&	acctchkfreq,
		0	,
		sysctl_acct_chkfreq	,
		"I"	,
		"frequency for checking the free space"
	)

Variable Documentation

◆ acct_configured

int acct_configured

static

Definition at line 140 of file kern_acct.c.

Referenced by acct_disable(), and sys_acct().

◆ acct_cred

struct ucred* acct_cred

static

Definition at line 143 of file kern_acct.c.

Referenced by acct_disable(), acct_process(), and sys_acct().

◆ acct_flags

int acct_flags

static

Definition at line 144 of file kern_acct.c.

Referenced by acct_disable(), and sys_acct().

◆ acct_state

int acct_state

static

Definition at line 152 of file kern_acct.c.

Referenced by acct_thread(), acctwatch(), and sys_acct().

◆ acct_suspended

int acct_suspended

static

Definition at line 141 of file kern_acct.c.

Referenced by acct_process(), acctwatch(), and sys_acct().

◆ acct_sx

struct sx acct_sx

static

Definition at line 145 of file kern_acct.c.

Referenced by acct_disable(), acct_process(), acct_thread(), acctwatch(), and sys_acct().

◆ acct_vp

struct vnode* acct_vp

static

Definition at line 142 of file kern_acct.c.

Referenced by acct_disable(), acct_process(), acctwatch(), and sys_acct().

◆ acctchkfreq

int acctchkfreq = 15

static

Definition at line 168 of file kern_acct.c.

Referenced by acct_thread(), and sysctl_acct_chkfreq().

◆ acctresume

int acctresume = 4

static

Definition at line 164 of file kern_acct.c.

Referenced by acctwatch().

◆ acctsuspend

int acctsuspend = 2

static

Definition at line 160 of file kern_acct.c.

Referenced by acctwatch().

Macros

Functions

Variables

Macro Definition Documentation

◆ ACCT_EXITREQ

◆ ACCT_RUNNING

◆ CALC_BITS

◆ FLT_MANT_DIG

◆ FLT_MAX_EXP

◆ LOG2_1M

◆ MANT_MASK

Function Documentation

◆ __FBSDID()

◆ _Static_assert() [1/2]

◆ _Static_assert() [2/2]

◆ acct_disable()

◆ acct_process()

◆ acct_thread()

◆ acctwatch()

◆ encode_long()

◆ encode_timeval()

◆ SX_SYSINIT()

◆ sys_acct()

◆ sysctl_acct_chkfreq()

◆ SYSCTL_INT() [1/4]

◆ SYSCTL_INT() [2/4]

◆ SYSCTL_INT() [3/4]

◆ SYSCTL_INT() [4/4]

◆ SYSCTL_PROC()

Variable Documentation

◆ acct_configured

◆ acct_cred

◆ acct_flags

◆ acct_state

◆ acct_suspended

◆ acct_sx

◆ acct_vp

◆ acctchkfreq

◆ acctresume

◆ acctsuspend