acct.h (4095B)
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* 3 * BSD Process Accounting for Linux - Definitions 4 * 5 * Author: Marco van Wieringen (mvw@planets.elm.net) 6 * 7 * This header file contains the definitions needed to implement 8 * BSD-style process accounting. The kernel accounting code and all 9 * user-level programs that try to do something useful with the 10 * 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_H 17#define _UAPI_LINUX_ACCT_H 18 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 8 26 * exponent and a 13-bit fraction. 27 * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction 28 * (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 record 37 * 38 * This structure contains all of the information written out to the 39 * process accounting file whenever a process exits. 40 */ 41 42#define ACCT_COMM 16 43 44struct acct 45{ 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#endif 67 __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_v3 76{ 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#else 90 float ac_etime; /* Elapsed Time */ 91#endif 92 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 flags 105 */ 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#else 119#error unspecified endianness 120#endif 121 122#ifndef __KERNEL__ 123#define ACCT_VERSION 2 124#define AHZ (HZ) 125#endif /* __KERNEL */ 126 127 128#endif /* _UAPI_LINUX_ACCT_H */