Current File : //proc/thread-self/root/usr/include/linux/acct.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* BSD Process Accounting for Linux - Definitions
*
* Author: Marco van Wieringen (mvw@planets.elm.net)
*
* This header file contains the definitions needed to implement
* BSD-style process accounting. The kernel accounting code and all
* user-level programs that try to do something useful with the
* process accounting log must include this file.
*
* Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
*
*/
#ifndef _LINUX_ACCT_H
#define _LINUX_ACCT_H
#include <linux/types.h>
#include <asm/param.h>
#include <asm/byteorder.h>
/*
* comp_t is a 16-bit "floating" point number with a 3-bit base 8
* exponent and a 13-bit fraction.
* comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction
* (leading 1 not stored).
* See linux/kernel/acct.c for the specific encoding systems used.
*/
typedef __u16 comp_t;
typedef __u32 comp2_t;
/*
* accounting file record
*
* This structure contains all of the information written out to the
* process accounting file whenever a process exits.
*/
#define ACCT_COMM 16
struct acct
{
char ac_flag; /* Flags */
char ac_version; /* Always set to ACCT_VERSION */
/* for binary compatibility back until 2.0 */
__u16 ac_uid16; /* LSB of Real User ID */
__u16 ac_gid16; /* LSB of Real Group ID */
__u16 ac_tty; /* Control Terminal */
__u32 ac_btime; /* Process Creation Time */
comp_t ac_utime; /* User Time */
comp_t ac_stime; /* System Time */
comp_t ac_etime; /* Elapsed Time */
comp_t ac_mem; /* Average Memory Usage */
comp_t ac_io; /* Chars Transferred */
comp_t ac_rw; /* Blocks Read or Written */
comp_t ac_minflt; /* Minor Pagefaults */
comp_t ac_majflt; /* Major Pagefaults */
comp_t ac_swaps; /* Number of Swaps */
/* m68k had no padding here. */
__u16 ac_ahz; /* AHZ */
__u32 ac_exitcode; /* Exitcode */
char ac_comm[ACCT_COMM + 1]; /* Command Name */
__u8 ac_etime_hi; /* Elapsed Time MSB */
__u16 ac_etime_lo; /* Elapsed Time LSB */
__u32 ac_uid; /* Real User ID */
__u32 ac_gid; /* Real Group ID */
};
struct acct_v3
{
char ac_flag; /* Flags */
char ac_version; /* Always set to ACCT_VERSION */
__u16 ac_tty; /* Control Terminal */
__u32 ac_exitcode; /* Exitcode */
__u32 ac_uid; /* Real User ID */
__u32 ac_gid; /* Real Group ID */
__u32 ac_pid; /* Process ID */
__u32 ac_ppid; /* Parent Process ID */
__u32 ac_btime; /* Process Creation Time */
float ac_etime; /* Elapsed Time */
comp_t ac_utime; /* User Time */
comp_t ac_stime; /* System Time */
comp_t ac_mem; /* Average Memory Usage */
comp_t ac_io; /* Chars Transferred */
comp_t ac_rw; /* Blocks Read or Written */
comp_t ac_minflt; /* Minor Pagefaults */
comp_t ac_majflt; /* Major Pagefaults */
comp_t ac_swaps; /* Number of Swaps */
char ac_comm[ACCT_COMM]; /* Command Name */
};
/*
* accounting flags
*/
/* bit set when the process ... */
#define AFORK 0x01 /* ... executed fork, but did not exec */
#define ASU 0x02 /* ... used super-user privileges */
#define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */
#define ACORE 0x08 /* ... dumped core */
#define AXSIG 0x10 /* ... was killed by a signal */
#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
#define ACCT_BYTEORDER 0x80 /* accounting file is big endian */
#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
#define ACCT_BYTEORDER 0x00 /* accounting file is little endian */
#else
#error unspecified endianness
#endif
#define ACCT_VERSION 2
#define AHZ (HZ)
#endif /* _LINUX_ACCT_H */
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