include/linux/acct.h

   1 /*
   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 /*
  21  *  comp_t is a 16-bit "floating" point number with a 3-bit base 8
  22  *  exponent and a 13-bit fraction. See linux/kernel/acct.c for the
  23  *  specific encoding system used.
  24  */
  25
  26 typedef __u16   comp_t;
  27
  28 /*
  29  *   accounting file record
  30  *
  31  *   This structure contains all of the information written out to the
  32  *   process accounting file whenever a process exits.
  33  */
  34
  35 #define ACCT_COMM       16
  36
  37 struct acct
  38 {
  39         char            ac_flag;                /* Accounting Flags */
  40 /*
  41  *      No binary format break with 2.0 - but when we hit 32bit uid we'll
  42  *      have to bite one
  43  */
  44         __u16           ac_uid;                 /* Accounting Real User ID */
  45         __u16           ac_gid;                 /* Accounting Real Group ID */
  46         __u16           ac_tty;                 /* Accounting Control Terminal */
  47         __u32           ac_btime;               /* Accounting Process Creation Time */
  48         comp_t          ac_utime;               /* Accounting User Time */
  49         comp_t          ac_stime;               /* Accounting System Time */
  50         comp_t          ac_etime;               /* Accounting Elapsed Time */
  51         comp_t          ac_mem;                 /* Accounting Average Memory Usage */
  52         comp_t          ac_io;                  /* Accounting Chars Transferred */
  53         comp_t          ac_rw;                  /* Accounting Blocks Read or Written */
  54         comp_t          ac_minflt;              /* Accounting Minor Pagefaults */
  55         comp_t          ac_majflt;              /* Accounting Major Pagefaults */
  56         comp_t          ac_swaps;               /* Accounting Number of Swaps */
  57         __u32           ac_exitcode;            /* Accounting Exitcode */
  58         char            ac_comm[ACCT_COMM + 1]; /* Accounting Command Name */
  59         char            ac_pad[10];             /* Accounting Padding Bytes */
  60 };
  61
  62 /*
  63  *  accounting flags
  64  */
  65                                 /* bit set when the process ... */
  66 #define AFORK           0x01    /* ... executed fork, but did not exec */
  67 #define ASU             0x02    /* ... used super-user privileges */
  68 #define ACOMPAT         0x04    /* ... used compatibility mode (VAX only not used) */
  69 #define ACORE           0x08    /* ... dumped core */
  70 #define AXSIG           0x10    /* ... was killed by a signal */
  71
  72 #define AHZ             100
  73
  74 #ifdef __KERNEL__
  75
  76 #include <linux/config.h>
  77
  78 #ifdef CONFIG_BSD_PROCESS_ACCT
  79 extern void acct_auto_close(kdev_t dev);
  80 extern int acct_process(long exitcode);
  81 #else
  82 #define acct_auto_close(x)      do { } while (0)
  83 #define acct_process(x)         do { } while (0)
  84 #endif
  85
  86 #endif  /* __KERNEL */
  87
  88 #endif  /* _LINUX_ACCT_H */