Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
acct.h
Go to the documentation of this file.
1 /*
2  * BSD Process Accounting for Linux - Definitions
3  *
4  * Author: Marco van Wieringen ([email protected])
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 _UAPI_LINUX_ACCT_H
16 #define _UAPI_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 
31 typedef __u16 comp_t;
32 typedef __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 
43 struct 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 #if !defined(CONFIG_M68K) || !defined(__KERNEL__)
63  __u16 ac_ahz; /* AHZ */
64 #endif
65  __u32 ac_exitcode; /* Exitcode */
66  char ac_comm[ACCT_COMM + 1]; /* Command Name */
67  __u8 ac_etime_hi; /* Elapsed Time MSB */
68  __u16 ac_etime_lo; /* Elapsed Time LSB */
69  __u32 ac_uid; /* Real User ID */
70  __u32 ac_gid; /* Real Group ID */
71 };
72 
73 struct acct_v3
74 {
75  char ac_flag; /* Flags */
76  char ac_version; /* Always set to ACCT_VERSION */
77  __u16 ac_tty; /* Control Terminal */
78  __u32 ac_exitcode; /* Exitcode */
79  __u32 ac_uid; /* Real User ID */
80  __u32 ac_gid; /* Real Group ID */
81  __u32 ac_pid; /* Process ID */
82  __u32 ac_ppid; /* Parent Process ID */
83  __u32 ac_btime; /* Process Creation Time */
84 #ifdef __KERNEL__
85  __u32 ac_etime; /* Elapsed Time */
86 #else
87  float ac_etime; /* Elapsed Time */
88 #endif
89  comp_t ac_utime; /* User Time */
90  comp_t ac_stime; /* System Time */
91  comp_t ac_mem; /* Average Memory Usage */
92  comp_t ac_io; /* Chars Transferred */
93  comp_t ac_rw; /* Blocks Read or Written */
94  comp_t ac_minflt; /* Minor Pagefaults */
95  comp_t ac_majflt; /* Major Pagefaults */
96  comp_t ac_swaps; /* Number of Swaps */
97  char ac_comm[ACCT_COMM]; /* Command Name */
98 };
99 
100 /*
101  * accounting flags
102  */
103  /* bit set when the process ... */
104 #define AFORK 0x01 /* ... executed fork, but did not exec */
105 #define ASU 0x02 /* ... used super-user privileges */
106 #define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */
107 #define ACORE 0x08 /* ... dumped core */
108 #define AXSIG 0x10 /* ... was killed by a signal */
109 
110 #ifdef __BIG_ENDIAN
111 #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */
112 #else
113 #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */
114 #endif
115 
116 #ifndef __KERNEL__
117 #define ACCT_VERSION 2
118 #define AHZ (HZ)
119 #endif /* __KERNEL */
120 
121 
122 #endif /* _UAPI_LINUX_ACCT_H */