LXR linux/include/uapi/linux/acct.h

   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 ... */
 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