Where Online Learning is simpler!

The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/sys/acct.h


$ cat -n /usr/include/x86_64-linux-gnu/sys/acct.h

     1	/* Copyright (C) 1996-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	#ifndef _SYS_ACCT_H
    19	#define _SYS_ACCT_H	1
    20	
    21	#include <sys/types.h>
    22	#include <stdint.h>
    23	#include <bits/endian.h>
    24	#include <bits/types/time_t.h>
    25	
    26	__BEGIN_DECLS
    27	
    28	#define ACCT_COMM 16
    29	
    30	/*
    31	  comp_t is a 16-bit "floating" point number with a 3-bit base 8
    32	  exponent and a 13-bit fraction. See linux/kernel/acct.c for the
    33	  specific encoding system used.
    34	*/
    35	
    36	typedef uint16_t comp_t;
    37	
    38	struct acct
    39	{
    40	  char ac_flag;			/* Flags.  */
    41	  uint16_t ac_uid;		/* Real user ID.  */
    42	  uint16_t ac_gid;		/* Real group ID.  */
    43	  uint16_t ac_tty;		/* Controlling terminal.  */
    44	  uint32_t ac_btime;		/* Beginning time.  */
    45	  comp_t ac_utime;		/* User time.  */
    46	  comp_t ac_stime;		/* System time.  */
    47	  comp_t ac_etime;		/* Elapsed time.  */
    48	  comp_t ac_mem;		/* Average memory usage.  */
    49	  comp_t ac_io;			/* Chars transferred.  */
    50	  comp_t ac_rw;			/* Blocks read or written.  */
    51	  comp_t ac_minflt;		/* Minor pagefaults.  */
    52	  comp_t ac_majflt;		/* Major pagefaults.  */
    53	  comp_t ac_swaps;		/* Number of swaps.  */
    54	  uint32_t ac_exitcode;		/* Process exitcode.  */
    55	  char ac_comm[ACCT_COMM+1];	/* Command name.  */
    56	  char ac_pad[10];		/* Padding bytes.  */
    57	};
    58	
    59	
    60	struct acct_v3
    61	{
    62	  char ac_flag;			/* Flags */
    63	  char ac_version;		/* Always set to ACCT_VERSION */
    64	  uint16_t ac_tty;		/* Control Terminal */
    65	  uint32_t ac_exitcode;		/* Exitcode */
    66	  uint32_t ac_uid;		/* Real User ID */
    67	  uint32_t ac_gid;		/* Real Group ID */
    68	  uint32_t ac_pid;		/* Process ID */
    69	  uint32_t ac_ppid;		/* Parent Process ID */
    70	  uint32_t ac_btime;		/* Process Creation Time */
    71	  float ac_etime;		/* Elapsed Time */
    72	  comp_t ac_utime;		/* User Time */
    73	  comp_t ac_stime;		/* System Time */
    74	  comp_t ac_mem;		/* Average Memory Usage */
    75	  comp_t ac_io;			/* Chars Transferred */
    76	  comp_t ac_rw;			/* Blocks Read or Written */
    77	  comp_t ac_minflt;		/* Minor Pagefaults */
    78	  comp_t ac_majflt;		/* Major Pagefaults */
    79	  comp_t ac_swaps;		/* Number of Swaps */
    80	  char ac_comm[ACCT_COMM];	/* Command Name */
    81	};
    82	
    83	
    84	enum
    85	  {
    86	    AFORK = 0x01,		/* Has executed fork, but no exec.  */
    87	    ASU = 0x02,			/* Used super-user privileges.  */
    88	    ACORE = 0x08,		/* Dumped core.  */
    89	    AXSIG = 0x10,		/* Killed by a signal.  */
    90	    AGROUP = 0x20		/* Was the last task of the process
    91					   (task group).  */
    92	  };
    93	
    94	#if __BYTE_ORDER == __BIG_ENDIAN
    95	# define ACCT_BYTEORDER 0x80	/* Accounting file is big endian.  */
    96	#else
    97	# define ACCT_BYTEORDER 0x00	/* Accounting file is little endian.  */
    98	#endif
    99	
   100	#define AHZ     100
   101	
   102	
   103	/* Switch process accounting on and off.  */
   104	extern int acct (const char *__filename) __THROW;
   105	
   106	__END_DECLS
   107	
   108	#endif	/* sys/acct.h */