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Tim Zimmermann6a834b72020-09-03 09:11:59 +02001/*
2 * BSD Process Accounting for Linux - Definitions
3 *
4 * Author: Marco van Wieringen (mvw@planets.elm.net)
5 *
6 * This header file contains the definitions needed to implement
7 * BSD-style process accounting. The kernel accounting code and all
8 * user-level programs that try to do something useful with the
9 * process accounting log must include this file.
10 *
11 * Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
12 *
13 */
14
15#ifndef _LINUX_ACCT_H
16#define _LINUX_ACCT_H
17
18#include <linux/types.h>
19
20#include <asm/param.h>
21#include <asm/byteorder.h>
22
23/*
24 * comp_t is a 16-bit "floating" point number with a 3-bit base 8
25 * exponent and a 13-bit fraction.
26 * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction
27 * (leading 1 not stored).
28 * See linux/kernel/acct.c for the specific encoding systems used.
29 */
30
31typedef __u16 comp_t;
32typedef __u32 comp2_t;
33
34/*
35 * accounting file record
36 *
37 * This structure contains all of the information written out to the
38 * process accounting file whenever a process exits.
39 */
40
41#define ACCT_COMM 16
42
43struct acct
44{
45 char ac_flag; /* Flags */
46 char ac_version; /* Always set to ACCT_VERSION */
47 /* for binary compatibility back until 2.0 */
48 __u16 ac_uid16; /* LSB of Real User ID */
49 __u16 ac_gid16; /* LSB of Real Group ID */
50 __u16 ac_tty; /* Control Terminal */
51 __u32 ac_btime; /* Process Creation Time */
52 comp_t ac_utime; /* User Time */
53 comp_t ac_stime; /* System Time */
54 comp_t ac_etime; /* Elapsed Time */
55 comp_t ac_mem; /* Average Memory Usage */
56 comp_t ac_io; /* Chars Transferred */
57 comp_t ac_rw; /* Blocks Read or Written */
58 comp_t ac_minflt; /* Minor Pagefaults */
59 comp_t ac_majflt; /* Major Pagefaults */
60 comp_t ac_swaps; /* Number of Swaps */
61/* m68k had no padding here. */
62 __u16 ac_ahz; /* AHZ */
63 __u32 ac_exitcode; /* Exitcode */
64 char ac_comm[ACCT_COMM + 1]; /* Command Name */
65 __u8 ac_etime_hi; /* Elapsed Time MSB */
66 __u16 ac_etime_lo; /* Elapsed Time LSB */
67 __u32 ac_uid; /* Real User ID */
68 __u32 ac_gid; /* Real Group ID */
69};
70
71struct acct_v3
72{
73 char ac_flag; /* Flags */
74 char ac_version; /* Always set to ACCT_VERSION */
75 __u16 ac_tty; /* Control Terminal */
76 __u32 ac_exitcode; /* Exitcode */
77 __u32 ac_uid; /* Real User ID */
78 __u32 ac_gid; /* Real Group ID */
79 __u32 ac_pid; /* Process ID */
80 __u32 ac_ppid; /* Parent Process ID */
81 __u32 ac_btime; /* Process Creation Time */
82 float ac_etime; /* Elapsed Time */
83 comp_t ac_utime; /* User Time */
84 comp_t ac_stime; /* System Time */
85 comp_t ac_mem; /* Average Memory Usage */
86 comp_t ac_io; /* Chars Transferred */
87 comp_t ac_rw; /* Blocks Read or Written */
88 comp_t ac_minflt; /* Minor Pagefaults */
89 comp_t ac_majflt; /* Major Pagefaults */
90 comp_t ac_swaps; /* Number of Swaps */
91 char ac_comm[ACCT_COMM]; /* Command Name */
92};
93
94/*
95 * accounting flags
96 */
97 /* bit set when the process ... */
98#define AFORK 0x01 /* ... executed fork, but did not exec */
99#define ASU 0x02 /* ... used super-user privileges */
100#define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */
101#define ACORE 0x08 /* ... dumped core */
102#define AXSIG 0x10 /* ... was killed by a signal */
103
104#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
105#define ACCT_BYTEORDER 0x80 /* accounting file is big endian */
106#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
107#define ACCT_BYTEORDER 0x00 /* accounting file is little endian */
108#else
109#error unspecified endianness
110#endif
111
112#define ACCT_VERSION 2
113#define AHZ (HZ)
114
115
116#endif /* _LINUX_ACCT_H */