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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * BSD Process Accounting for Linux - Definitions4 *5 * Author: Marco van Wieringen (mvw@planets.elm.net)6 *7 * This header file contains the definitions needed to implement8 * BSD-style process accounting. The kernel accounting code and all9 * user-level programs that try to do something useful with the10 * process accounting log must include this file.11 *12 * Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.13 *14 */15 16#ifndef _UAPI_LINUX_ACCT_H17#define _UAPI_LINUX_ACCT_H18 19#include <linux/types.h>20 21#include <asm/param.h>22#include <asm/byteorder.h>23 24/* 25 * comp_t is a 16-bit "floating" point number with a 3-bit base 826 * exponent and a 13-bit fraction.27 * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction28 * (leading 1 not stored).29 * See linux/kernel/acct.c for the specific encoding systems used.30 */31 32typedef __u16 comp_t;33typedef __u32 comp2_t;34 35/*36 * accounting file record37 *38 * This structure contains all of the information written out to the39 * process accounting file whenever a process exits.40 */41 42#define ACCT_COMM 1643 44struct acct45{46 char ac_flag; /* Flags */47 char ac_version; /* Always set to ACCT_VERSION */48 /* for binary compatibility back until 2.0 */49 __u16 ac_uid16; /* LSB of Real User ID */50 __u16 ac_gid16; /* LSB of Real Group ID */51 __u16 ac_tty; /* Control Terminal */52 /* __u32 range means times from 1970 to 2106 */53 __u32 ac_btime; /* Process Creation Time */54 comp_t ac_utime; /* User Time */55 comp_t ac_stime; /* System Time */56 comp_t ac_etime; /* Elapsed Time */57 comp_t ac_mem; /* Average Memory Usage */58 comp_t ac_io; /* Chars Transferred */59 comp_t ac_rw; /* Blocks Read or Written */60 comp_t ac_minflt; /* Minor Pagefaults */61 comp_t ac_majflt; /* Major Pagefaults */62 comp_t ac_swaps; /* Number of Swaps */63/* m68k had no padding here. */64#if !defined(CONFIG_M68K) || !defined(__KERNEL__)65 __u16 ac_ahz; /* AHZ */66#endif67 __u32 ac_exitcode; /* Exitcode */68 char ac_comm[ACCT_COMM + 1]; /* Command Name */69 __u8 ac_etime_hi; /* Elapsed Time MSB */70 __u16 ac_etime_lo; /* Elapsed Time LSB */71 __u32 ac_uid; /* Real User ID */72 __u32 ac_gid; /* Real Group ID */73};74 75struct acct_v376{77 char ac_flag; /* Flags */78 char ac_version; /* Always set to ACCT_VERSION */79 __u16 ac_tty; /* Control Terminal */80 __u32 ac_exitcode; /* Exitcode */81 __u32 ac_uid; /* Real User ID */82 __u32 ac_gid; /* Real Group ID */83 __u32 ac_pid; /* Process ID */84 __u32 ac_ppid; /* Parent Process ID */85 /* __u32 range means times from 1970 to 2106 */86 __u32 ac_btime; /* Process Creation Time */87#ifdef __KERNEL__88 __u32 ac_etime; /* Elapsed Time */89#else90 float ac_etime; /* Elapsed Time */91#endif92 comp_t ac_utime; /* User Time */93 comp_t ac_stime; /* System Time */94 comp_t ac_mem; /* Average Memory Usage */95 comp_t ac_io; /* Chars Transferred */96 comp_t ac_rw; /* Blocks Read or Written */97 comp_t ac_minflt; /* Minor Pagefaults */98 comp_t ac_majflt; /* Major Pagefaults */99 comp_t ac_swaps; /* Number of Swaps */100 char ac_comm[ACCT_COMM]; /* Command Name */101};102 103/*104 * accounting flags105 */106 /* bit set when the process/task ... */107#define AFORK 0x01 /* ... executed fork, but did not exec */108#define ASU 0x02 /* ... used super-user privileges */109#define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */110#define ACORE 0x08 /* ... dumped core */111#define AXSIG 0x10 /* ... was killed by a signal */112#define AGROUP 0x20 /* ... was the last task of the process (task group) */113 114#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)115#define ACCT_BYTEORDER 0x80 /* accounting file is big endian */116#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)117#define ACCT_BYTEORDER 0x00 /* accounting file is little endian */118#else119#error unspecified endianness120#endif121 122#ifndef __KERNEL__123#define ACCT_VERSION 2124#define AHZ (HZ)125#endif /* __KERNEL */126 127 128#endif /* _UAPI_LINUX_ACCT_H */129