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/*
 *  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>

/*
 *  comp_t is a 16-bit "floating" point number with a 3-bit base 8
 *  exponent and a 13-bit fraction. See linux/kernel/acct.c for the
 *  specific encoding system used.
 */

typedef __u16   comp_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;                /* Accounting Flags */
/*
 *      No binary format break with 2.0 - but when we hit 32bit uid we'll
 *      have to bite one
 */
        __u16           ac_uid;                 /* Accounting Real User ID */
        __u16           ac_gid;                 /* Accounting Real Group ID */
        __u16           ac_tty;                 /* Accounting Control Terminal */
        __u32           ac_btime;               /* Accounting Process Creation Time */
        comp_t          ac_utime;               /* Accounting User Time */
        comp_t          ac_stime;               /* Accounting System Time */
        comp_t          ac_etime;               /* Accounting Elapsed Time */
        comp_t          ac_mem;                 /* Accounting Average Memory Usage */
        comp_t          ac_io;                  /* Accounting Chars Transferred */
        comp_t          ac_rw;                  /* Accounting Blocks Read or Written */
        comp_t          ac_minflt;              /* Accounting Minor Pagefaults */
        comp_t          ac_majflt;              /* Accounting Major Pagefaults */
        comp_t          ac_swaps;               /* Accounting Number of Swaps */
        __u32           ac_exitcode;            /* Accounting Exitcode */
        char            ac_comm[ACCT_COMM + 1]; /* Accounting Command Name */
        char            ac_pad[10];             /* Accounting Padding Bytes */
};

/*
 *  accounting flags
 */
                                /* bit set when the process ... */
#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 AHZ             100

#ifdef __KERNEL__

#include <linux/config.h>

#ifdef CONFIG_BSD_PROCESS_ACCT
struct super_block;
extern void acct_auto_close(struct super_block *sb);
extern void acct_process(long exitcode);
#else
#define acct_auto_close(x)      do { } while (0)
#define acct_process(x)         do { } while (0)
#endif

#endif  /* __KERNEL */

#endif  /* _LINUX_ACCT_H */