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 32 typedef __u16 comp_t; 33 typedef __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 44 struct 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 75 struct 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 ... */ 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 */ 112 113 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) 114 #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */ 115 #elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) 116 #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */ 117 #else 118 #error unspecified endianness 119 #endif 120 121 #ifndef __KERNEL__ 122 #define ACCT_VERSION 2 123 #define AHZ (HZ) 124 #endif /* __KERNEL */ 125 126 127 #endif /* _UAPI_LINUX_ACCT_H */ 128