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acct.h
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/* 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 range means times from 1970 to 2106 */ __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 range means times from 1970 to 2106 */ __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/task ... */ #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 */ #define AGROUP 0x20 /* ... was the last task of the process (task group) */ #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 */