-/*
- * 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>
-
-#include <asm/param.h>
-#include <asm/byteorder.h>
-
-/*
- * comp_t is a 16-bit "floating" point number with a 3-bit base 8
- * exponent and a 13-bit fraction.
- * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction
- * (leading 1 not stored).
- * See linux/kernel/acct.c for the specific encoding systems used.
- */
-
-typedef __u16 comp_t;
-typedef __u32 comp2_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; /* Flags */
- char ac_version; /* Always set to ACCT_VERSION */
- /* for binary compatibility back until 2.0 */
- __u16 ac_uid16; /* LSB of Real User ID */
- __u16 ac_gid16; /* LSB of Real Group ID */
- __u16 ac_tty; /* Control Terminal */
- __u32 ac_btime; /* Process Creation Time */
- comp_t ac_utime; /* User Time */
- comp_t ac_stime; /* System Time */
- comp_t ac_etime; /* Elapsed Time */
- comp_t ac_mem; /* Average Memory Usage */
- comp_t ac_io; /* Chars Transferred */
- comp_t ac_rw; /* Blocks Read or Written */
- comp_t ac_minflt; /* Minor Pagefaults */
- comp_t ac_majflt; /* Major Pagefaults */
- comp_t ac_swaps; /* Number of Swaps */
-/* m68k had no padding here. */
-#if !defined(CONFIG_M68K) || !defined(__KERNEL__)
- __u16 ac_ahz; /* AHZ */
-#endif
- __u32 ac_exitcode; /* Exitcode */
- char ac_comm[ACCT_COMM + 1]; /* Command Name */
- __u8 ac_etime_hi; /* Elapsed Time MSB */
- __u16 ac_etime_lo; /* Elapsed Time LSB */
- __u32 ac_uid; /* Real User ID */
- __u32 ac_gid; /* Real Group ID */
-};
-
-struct acct_v3
-{
- char ac_flag; /* Flags */
- char ac_version; /* Always set to ACCT_VERSION */
- __u16 ac_tty; /* Control Terminal */
- __u32 ac_exitcode; /* Exitcode */
- __u32 ac_uid; /* Real User ID */
- __u32 ac_gid; /* Real Group ID */
- __u32 ac_pid; /* Process ID */
- __u32 ac_ppid; /* Parent Process ID */
- __u32 ac_btime; /* Process Creation Time */
-#ifdef __KERNEL__
- __u32 ac_etime; /* Elapsed Time */
-#else
- float ac_etime; /* Elapsed Time */
-#endif
- comp_t ac_utime; /* User Time */
- comp_t ac_stime; /* System Time */
- comp_t ac_mem; /* Average Memory Usage */
- comp_t ac_io; /* Chars Transferred */
- comp_t ac_rw; /* Blocks Read or Written */
- comp_t ac_minflt; /* Minor Pagefaults */
- comp_t ac_majflt; /* Major Pagefaults */
- comp_t ac_swaps; /* Number of Swaps */
- char ac_comm[ACCT_COMM]; /* Command Name */
-};
-
-/*
- * 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 */
-
-#ifdef __BIG_ENDIAN
-#define ACCT_BYTEORDER 0x80 /* accounting file is big endian */
-#else
-#define ACCT_BYTEORDER 0x00 /* accounting file is little endian */
-#endif
-
-#ifdef __KERNEL__
-
-
-#ifdef CONFIG_BSD_PROCESS_ACCT
-struct vfsmount;
-struct super_block;
-struct pacct_struct;
-struct pid_namespace;
-extern int acct_parm[]; /* for sysctl */
-extern void acct_auto_close_mnt(struct vfsmount *m);
-extern void acct_auto_close(struct super_block *sb);
-extern void acct_collect(long exitcode, int group_dead);
-extern void acct_process(void);
-extern void acct_exit_ns(struct pid_namespace *);
-#else
-#define acct_auto_close_mnt(x) do { } while (0)
-#define acct_auto_close(x) do { } while (0)
-#define acct_collect(x,y) do { } while (0)
-#define acct_process() do { } while (0)
-#define acct_exit_ns(ns) do { } while (0)
-#endif
-
-/*
- * ACCT_VERSION numbers as yet defined:
- * 0: old format (until 2.6.7) with 16 bit uid/gid
- * 1: extended variant (binary compatible on M68K)
- * 2: extended variant (binary compatible on everything except M68K)
- * 3: new binary incompatible format (64 bytes)
- * 4: new binary incompatible format (128 bytes)
- * 5: new binary incompatible format (128 bytes, second half)
- *
- */
-
-#ifdef CONFIG_BSD_PROCESS_ACCT_V3
-#define ACCT_VERSION 3
-#define AHZ 100
-typedef struct acct_v3 acct_t;
-#else
-#ifdef CONFIG_M68K
-#define ACCT_VERSION 1
-#else
-#define ACCT_VERSION 2
-#endif
-#define AHZ (USER_HZ)
-typedef struct acct acct_t;
-#endif
-
-#else
-#define ACCT_VERSION 2
-#define AHZ (HZ)
-#endif /* __KERNEL */
-
-#ifdef __KERNEL__
-#include <linux/jiffies.h>
-/*
- * Yet another set of HZ to *HZ helper functions.
- * See <linux/jiffies.h> for the original.
- */
-
-static inline u32 jiffies_to_AHZ(unsigned long x)
-{
-#if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0
-# if HZ < AHZ
- return x * (AHZ / HZ);
-# else
- return x / (HZ / AHZ);
-# endif
-#else
- u64 tmp = (u64)x * TICK_NSEC;
- do_div(tmp, (NSEC_PER_SEC / AHZ));
- return (long)tmp;
-#endif
-}
-
-static inline u64 nsec_to_AHZ(u64 x)
-{
-#if (NSEC_PER_SEC % AHZ) == 0
- do_div(x, (NSEC_PER_SEC / AHZ));
-#elif (AHZ % 512) == 0
- x *= AHZ/512;
- do_div(x, (NSEC_PER_SEC / 512));
-#else
- /*
- * max relative error 5.7e-8 (1.8s per year) for AHZ <= 1024,
- * overflow after 64.99 years.
- * exact for AHZ=60, 72, 90, 120, 144, 180, 300, 600, 900, ...
- */
- x *= 9;
- do_div(x, (unsigned long)((9ull * NSEC_PER_SEC + (AHZ/2))
- / AHZ));
-#endif
- return x;
-}
-
-#endif /* __KERNEL */
-
-#endif /* _LINUX_ACCT_H */
~ian / chiark-utils.git / commitdiff