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kernel/linux-imx6_3.14.28/include/uapi/linux/acct.h 3.76 KB
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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 _UAPI_LINUX_ACCT_H
  #define _UAPI_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 */
  
  #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
  #define ACCT_BYTEORDER	0x80	/* accounting file is big endian */
  #elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
  #define ACCT_BYTEORDER	0x00	/* accounting file is little endian */
  #else
  #error unspecified endianness
  #endif
  
  #ifndef __KERNEL__
  #define ACCT_VERSION	2
  #define AHZ		(HZ)
  #endif	/* __KERNEL */
  
  
  #endif /* _UAPI_LINUX_ACCT_H */