defs.h - platform/external/strace - Gitiles

 /*
  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *	$Id$
  */

 #ifdef linux
 #include <features.h>
 #endif

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 /* configuration section */
 #ifndef MAX_QUALS
 #define MAX_QUALS	1024	/* maximum number of syscalls, signals, etc. */
 #endif
 #ifndef MAX_PROCS
 #define MAX_PROCS	32	/* maximum number of processes tracable */
 #endif
 #ifndef DEFAULT_STRLEN
 #define DEFAULT_STRLEN	32	/* default maximum # of bytes printed in
 				  `printstr', change with `-s' switch */
 #endif
 #ifndef DEFAULT_ACOLUMN
 #define DEFAULT_ACOLUMN	40	/* default alignment column for results */
 #endif
 #ifndef MAX_ARGS
 #define MAX_ARGS	32	/* maximum number of args to a syscall */
 #endif
 #ifndef DEFAULT_SORTBY
 #define DEFAULT_SORTBY "time"	/* default sorting method for call profiling */
 #endif

 #include <sys/types.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
 #include <sys/time.h>
 #include <errno.h>

 #ifdef STDC_HEADERS
 #include <stddef.h>
 #endif /* STDC_HEADERS */

 #if defined(LINUX)
 #  if defined(SPARC)
 #     define LINUXSPARC
 #  endif
 #  if defined(ALPHA)
 #     define LINUX_64BIT
 #  endif
 #endif

 #ifdef SVR4
 #include <sys/procfs.h>
 #ifdef SVR4_MP
 #include <sys/uio.h>
 #endif
 #else /* !SVR4 */
 #if defined(LINUXSPARC) && defined(__GLIBC__)
 #include <sys/ptrace.h>
 #else
 /* Work around awkward prototype in ptrace.h. */
 #define ptrace xptrace
 #include <sys/ptrace.h>
 #undef ptrace
 #ifdef POWERPC
 #define __KERNEL__
 #include <asm/ptrace.h>
 #undef __KERNEL__
 /* TEMP */
 #define UESP	PT_R1
 #define EIP	PT_NIP
 #define EAX	PT_R3
 #define ORIG_EAX PT_ORIG_R3
 #endif
 #ifdef __STDC__
 #ifdef LINUX
 extern long ptrace(int, int, char *, long);
 #else /* !LINUX */
 extern int ptrace(int, int, char *, int, ...);
 #endif /* !LINUX */
 #else /* !__STDC__ */
 extern int ptrace();
 #endif /* !__STDC__ */
 #endif /* !LINUXSPARC */
 #endif /* !SVR4 */

 #ifdef LINUX
 #if !defined(__GLIBC__)
 #define	PTRACE_PEEKUSER	PTRACE_PEEKUSR
 #define	PTRACE_POKEUSER	PTRACE_POKEUSR
 #endif
 #ifdef ALPHA
 #  define REG_R0 0
 #  define REG_A0 16
 #  define REG_A3 19
 #  define REG_FP 30
 #  define REG_PC 64
 #endif /* ALPHA */
 #ifdef MIPS
 #  define REG_V0 2
 #  define REG_A0 4
 #  define REG_A3 7
 #  define REG_SP 29
 #  define REG_EPC 64
 #endif /* MIPS */
 #endif /* LINUX */

 #define SUPPORTED_PERSONALITIES 1
 #define DEFAULT_PERSONALITY 0

 #ifdef LINUXSPARC
 #include <linux/a.out.h>
 #include <asm/psr.h>
 #undef  SUPPORTED_PERSONALITIES
 #define SUPPORTED_PERSONALITIES 2
 #endif /* LINUXSPARC */


 #ifdef SVR4
 #ifdef SVR4_MP
 extern int mp_ioctl (int f, int c, void *a, int s);
 #define IOCTL(f,c,a)	mp_ioctl (f, c, a, sizeof *a)
 #define IOCTL_STATUS(t) \
 	 pread (t->pfd_stat, &t->status, sizeof t->status, 0)
 #define IOCTL_WSTOP(t)						\
 	(IOCTL (t->pfd, PCWSTOP, NULL) < 0 ? -1 :		\
 	 IOCTL_STATUS (t))
 #define PR_WHY		pr_lwp.pr_why
 #define PR_WHAT		pr_lwp.pr_what
 #define PR_REG		pr_lwp.pr_context.uc_mcontext.gregs
 #define PR_FLAGS	pr_lwp.pr_flags
 #define PIOCSTIP	PCSTOP
 #define PIOCSET		PCSET
 #define PIOCRESET	PCRESET
 #define PIOCSTRACE	PCSTRACE
 #define PIOCSFAULT	PCSFAULT
 #define PIOCWSTOP	PCWSTOP
 #define PIOCSTOP	PCSTOP
 #define PIOCSENTRY	PCSENTRY
 #define PIOCSEXIT	PCSEXIT
 #define PIOCRUN		PCRUN
 #else
 #define IOCTL		ioctl
 #define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
 #define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWSTOP, &t->status)
 #define PR_WHY		pr_why
 #define PR_WHAT		pr_what
 #define PR_REG		pr_reg
 #define PR_FLAGS	pr_flags
 #endif
 #endif

 /* Trace Control Block */
 struct tcb {
 	short flags;		/* See below for TCB_ values */
 	int pid;		/* Process Id of this entry */
 	long scno;		/* System call number */
 	int u_nargs;		/* System call arguments */
 	long u_arg[MAX_ARGS];	/* System call arguments */
 	int u_error;		/* Error code */
 	long u_rval;		/* (first) return value */
 	FILE *outf;		/* Output file for this process */
 	char *auxstr;		/* Auxiliary info from syscall (see RVAL_STR) */
 	struct timeval stime;	/* System time usage as of last process wait */
 	struct timeval dtime;	/* Delta for system time usage */
 	struct timeval etime;	/* Syscall entry time */
 				/* Support for tracing forked processes */
 	struct tcb *parent;	/* Parent of this process */
 	int nchildren;		/* # of traced children */
 	int waitpid;		/* pid(s) this process is waiting for */
 				/* (1st arg of wait4()) */
 	long baddr;		/* `Breakpoint' address */
 	long inst[2];		/* Instructions on above */
 	int pfd;		/* proc file descriptor */
 #ifdef SVR4
 #ifdef SVR4_MP
 	int pfd_stat;
 	int pfd_as;
 	pstatus_t status;
 #else
 	prstatus_t status;	/* procfs status structure */
 #endif
 #endif
 };

 /* TCB flags */
 #define TCB_STARTUP	00001	/* We have just begun ptracing this process */
 #define TCB_INUSE	00002	/* This table entry is in use */
 #define TCB_INSYSCALL	00004	/* A system call is in progress */
 #define TCB_ATTACHED	00010	/* Process is not our own child */
 #define TCB_EXITING	00020	/* As far as we know, this process is exiting */
 #define TCB_SUSPENDED	00040	/* Process has done a wait(4), that can
 				   not be allowed to complete just now */
 #define TCB_BPTSET	00100	/* "Breakpoint" set after fork(2) */
 #define TCB_SIGTRAPPED	00200	/* Process wanted to block SIGTRAP */
 #define TCB_FOLLOWFORK	00400	/* Process should have forks followed */
 #define TCB_REPRINT	01000	/* We should reprint this syscall on exit */
 #ifdef LINUX
 #if defined(ALPHA) || defined(SPARC) || defined(POWERPC)
 #define TCB_WAITEXECVE	02000	/* ignore SIGTRAP after exceve */
 #endif /* ALPHA */
 #endif /* LINUX */

 /* qualifier flags */
 #define QUAL_TRACE	0001	/* this system call should be traced */
 #define QUAL_ABBREV	0002	/* abbreviate the structures of this syscall */
 #define QUAL_VERBOSE	0004	/* decode the structures of this syscall */
 #define QUAL_RAW	0010	/* print all args in hex for this syscall */
 #define QUAL_SIGNAL	0020	/* report events with this signal */
 #define QUAL_FAULT	0040	/* report events with this fault */
 #define QUAL_READ	0100	/* dump data read on this file descriptor */
 #define QUAL_WRITE	0200	/* dump data written to this file descriptor */

 #define entering(tcp)	(!((tcp)->flags & TCB_INSYSCALL))
 #define exiting(tcp)	((tcp)->flags & TCB_INSYSCALL)
 #define syserror(tcp)	((tcp)->u_error != 0)
 #define verbose(tcp)	(qual_flags[(tcp)->scno] & QUAL_VERBOSE)
 #define abbrev(tcp)	(qual_flags[(tcp)->scno] & QUAL_ABBREV)
 #define waiting_parent(tcp) \
 		(tcp->parent && \
 		(tcp->parent->flags & TCB_SUSPENDED) && \
 		(tcp->parent->waitpid <= 0 || tcp->parent->waitpid == tcp->pid))

 struct xlat {
 	int val;
 	char *str;
 };

 /* Format of syscall return values */
 #define RVAL_DECIMAL	000	/* decimal format */
 #define RVAL_HEX	001	/* hex format */
 #define RVAL_OCTAL	002	/* octal format */
 #define RVAL_UDECIMAL	003	/* unsigned decimal format */
 #define RVAL_MASK	007	/* mask for these values */

 #define RVAL_STR	010	/* Print `auxstr' field after return val */
 #define RVAL_NONE	020	/* Print nothing */

 #ifndef offsetof
 #define offsetof(type, member)	(((char *) &(((type *) NULL)->member)) - \
 				 ((char *) (type *) NULL))
 #endif /* !offsetof */

 /* get offset of member within a user struct */
 #define uoff(member)	offsetof(struct user, member)

 #define TRACE_FILE	001	/* Trace file-related syscalls. */
 #define TRACE_IPC	002	/* Trace IPC-related syscalls. */
 #define TRACE_NETWORK	004	/* Trace network-related syscalls. */
 #define TRACE_PROCESS	010	/* Trace process-related syscalls. */
 #define TRACE_SIGNAL	020	/* Trace signal-related syscalls. */

 extern struct tcb tcbtab[];
 extern int qual_flags[];
 extern int debug, followfork, followvfork;
 extern int rflag, tflag, dtime, cflag, xflag, qflag;
 extern int acolumn;
 extern char *outfname;
 extern int nprocs;
 extern int max_strlen;
 extern struct tcb *tcp_last;

 #ifdef __STDC__
 #define P(args) args
 #else
 #define P(args) ()
 #endif

 extern int set_personality P((int personality));
 extern char *xlookup P((struct xlat *, int));
 extern struct tcb *alloctcb P((int));
 extern void droptcb P((struct tcb *));

 extern void set_sortby P((char *));
 extern void set_overhead P((int));
 extern void qualify P((char *));
 extern void newoutf P((struct tcb *));
 extern int trace_syscall P((struct tcb *));
 extern void printxval P((struct xlat *, int, char *));
 extern int printargs P((struct tcb *));
 extern int addflags P((struct xlat *, int));
 extern int printflags P((struct xlat *, int));
 extern int umoven P((struct tcb *, long, int, char *));
 extern int umovestr P((struct tcb *, long, int, char *));
 extern int upeek P((int, long, long *));
 extern void dumpstr P((struct tcb *, long, int));
 extern void string_quote P((char *str));
 extern void printstr P((struct tcb *, long, int));
 extern void printnum P((struct tcb *, long, char *));
 extern void printpath P((struct tcb *, long));
 extern void printpathn P((struct tcb *, long, int));
 extern void printtv P((struct tcb *, long));
 extern void printsock P((struct tcb *, long, int));
 extern void printrusage P((struct tcb *, long));
 extern int clearbpt P((struct tcb *));
 extern int setbpt P((struct tcb *));
 extern int sigishandled P((struct tcb *, int));
 extern void printcall P((struct tcb *));
 extern char *signame P((int));
 extern void printsignal P((int));
 extern void printleader P((struct tcb *));
 extern void printtrailer P((struct tcb *));
 extern void tabto P((int));
 extern void call_summary P((FILE *));
 extern void fake_execve P((struct tcb *, char *, char *[], char *[]));

 extern int internal_fork P((struct tcb *));
 extern int internal_exec P((struct tcb *));
 extern int internal_wait P((struct tcb *));
 extern int internal_exit P((struct tcb *));

 extern char *ioctl_lookup P((long));
 extern int ioctl_decode P((struct tcb *, long, long));
 extern int term_ioctl P((struct tcb *, long, long));
 extern int sock_ioctl P((struct tcb *, long, long));
 extern int proc_ioctl P((struct tcb *, int, int));
 extern int stream_ioctl P((struct tcb *, int, int));

 extern void tv_tv P((struct timeval *, int, int));
 extern int tv_nz P((struct timeval *));
 extern int tv_cmp P((struct timeval *, struct timeval *));
 extern double tv_float P((struct timeval *));
 extern void tv_add P((struct timeval *, struct timeval *, struct timeval *));
 extern void tv_sub P((struct timeval *, struct timeval *, struct timeval *));
 extern void tv_mul P((struct timeval *, struct timeval *, int));
 extern void tv_div P((struct timeval *, struct timeval *, int));

 #ifdef SUNOS4
 extern int fixvfork P((struct tcb *));
 #endif
 #if !(defined(LINUX) && !defined(SPARC))
 extern long getrval2 P((struct tcb *));
 #endif
 #ifdef SVR4
 extern int proc_open P((struct tcb *tcp, int attaching));
 #endif

 #define umove(pid, addr, objp)	\
 	umoven((pid), (addr), sizeof *(objp), (char *) (objp))

 #ifdef __STDC__
 #ifdef __GNUC__
 extern void tprintf(const char *fmt, ...)
 	__attribute__ ((format (printf, 1, 2)));
 #else
 extern void tprintf(const char *fmt, ...);
 #endif
 #else
 extern void tprintf();
 #endif

 #ifndef HAVE_STRERROR
 const char *strerror P((int));
 #endif
 #ifndef HAVE_STRSIGNAL
 const char *strsignal P((int));
 #endif

 extern int current_personality;

 struct sysent {
 	int	nargs;
 	int	sys_flags;
 	int	(*sys_func)();
 	char	*sys_name;
 };

 extern struct sysent *sysent;
 extern int nsyscalls;

 extern char **errnoent;
 extern int nerrnos;

 struct ioctlent {
 	char *doth;
 	char *symbol;
 	unsigned long code;
 };

 extern struct ioctlent *ioctlent;
 extern int nioctlent;

 extern char **signalent;
 extern int nsignals;

 extern struct ioctlent *ioctlent;
 extern int nioctlents;
 extern char **signalent;
 extern int nsignals;

 extern struct ioctlent ioctlent0[];
 extern int nioctlents0;
 extern char *signalent0[];
 extern int nsignals0;

 #if SUPPORTED_PERSONALITIES >= 2
 extern struct ioctlent ioctlent1[];
 extern int nioctlents1;
 extern char *signalent1[];
 extern int nsignals1;
 #endif /* SUPPORTED_PERSONALITIES >= 2 */

 #if SUPPORTED_PERSONALITIES >= 3
 extern struct ioctlent ioctlent2[];
 extern int nioctlents2;
 extern char *signalent2[];
 extern int nsignals2;
 #endif /* SUPPORTED_PERSONALITIES >= 3 */
	/*
	* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
	* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
	* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* $Id$
	*/

	#ifdef linux
	#include <features.h>
	#endif

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	/* configuration section */
	#ifndef MAX_QUALS
	#define MAX_QUALS 1024 /* maximum number of syscalls, signals, etc. */
	#endif
	#ifndef MAX_PROCS
	#define MAX_PROCS 32 /* maximum number of processes tracable */
	#endif
	#ifndef DEFAULT_STRLEN
	#define DEFAULT_STRLEN 32 /* default maximum # of bytes printed in
	`printstr', change with `-s' switch */
	#endif
	#ifndef DEFAULT_ACOLUMN
	#define DEFAULT_ACOLUMN 40 /* default alignment column for results */
	#endif
	#ifndef MAX_ARGS
	#define MAX_ARGS 32 /* maximum number of args to a syscall */
	#endif
	#ifndef DEFAULT_SORTBY
	#define DEFAULT_SORTBY "time" /* default sorting method for call profiling */
	#endif

	#include <sys/types.h>
	#include <unistd.h>
	#include <stdlib.h>
	#include <stdio.h>
	#include <ctype.h>
	#include <string.h>
	#include <sys/time.h>
	#include <errno.h>

	#ifdef STDC_HEADERS
	#include <stddef.h>
	#endif /* STDC_HEADERS */

	#if defined(LINUX)
	# if defined(SPARC)
	# define LINUXSPARC
	# endif
	# if defined(ALPHA)
	# define LINUX_64BIT
	# endif
	#endif

	#ifdef SVR4
	#include <sys/procfs.h>
	#ifdef SVR4_MP
	#include <sys/uio.h>
	#endif
	#else /* !SVR4 */
	#if defined(LINUXSPARC) && defined(__GLIBC__)
	#include <sys/ptrace.h>
	#else
	/* Work around awkward prototype in ptrace.h. */
	#define ptrace xptrace
	#include <sys/ptrace.h>
	#undef ptrace
	#ifdef POWERPC
	#define __KERNEL__
	#include <asm/ptrace.h>
	#undef __KERNEL__
	/* TEMP */
	#define UESP PT_R1
	#define EIP PT_NIP
	#define EAX PT_R3
	#define ORIG_EAX PT_ORIG_R3
	#endif
	#ifdef __STDC__
	#ifdef LINUX
	extern long ptrace(int, int, char *, long);
	#else /* !LINUX */
	extern int ptrace(int, int, char *, int, ...);
	#endif /* !LINUX */
	#else /* !__STDC__ */
	extern int ptrace();
	#endif /* !__STDC__ */
	#endif /* !LINUXSPARC */
	#endif /* !SVR4 */

	#ifdef LINUX
	#if !defined(__GLIBC__)
	#define PTRACE_PEEKUSER PTRACE_PEEKUSR
	#define PTRACE_POKEUSER PTRACE_POKEUSR
	#endif
	#ifdef ALPHA
	# define REG_R0 0
	# define REG_A0 16
	# define REG_A3 19
	# define REG_FP 30
	# define REG_PC 64
	#endif /* ALPHA */
	#ifdef MIPS
	# define REG_V0 2
	# define REG_A0 4
	# define REG_A3 7
	# define REG_SP 29
	# define REG_EPC 64
	#endif /* MIPS */
	#endif /* LINUX */

	#define SUPPORTED_PERSONALITIES 1
	#define DEFAULT_PERSONALITY 0

	#ifdef LINUXSPARC
	#include <linux/a.out.h>
	#include <asm/psr.h>
	#undef SUPPORTED_PERSONALITIES
	#define SUPPORTED_PERSONALITIES 2
	#endif /* LINUXSPARC */


	#ifdef SVR4
	#ifdef SVR4_MP
	extern int mp_ioctl (int f, int c, void *a, int s);
	#define IOCTL(f,c,a) mp_ioctl (f, c, a, sizeof *a)
	#define IOCTL_STATUS(t) \
	pread (t->pfd_stat, &t->status, sizeof t->status, 0)
	#define IOCTL_WSTOP(t) \
	(IOCTL (t->pfd, PCWSTOP, NULL) < 0 ? -1 : \
	IOCTL_STATUS (t))
	#define PR_WHY pr_lwp.pr_why
	#define PR_WHAT pr_lwp.pr_what
	#define PR_REG pr_lwp.pr_context.uc_mcontext.gregs
	#define PR_FLAGS pr_lwp.pr_flags
	#define PIOCSTIP PCSTOP
	#define PIOCSET PCSET
	#define PIOCRESET PCRESET
	#define PIOCSTRACE PCSTRACE
	#define PIOCSFAULT PCSFAULT
	#define PIOCWSTOP PCWSTOP
	#define PIOCSTOP PCSTOP
	#define PIOCSENTRY PCSENTRY
	#define PIOCSEXIT PCSEXIT
	#define PIOCRUN PCRUN
	#else
	#define IOCTL ioctl
	#define IOCTL_STATUS(t) ioctl (t->pfd, PIOCSTATUS, &t->status)
	#define IOCTL_WSTOP(t) ioctl (t->pfd, PIOCWSTOP, &t->status)
	#define PR_WHY pr_why
	#define PR_WHAT pr_what
	#define PR_REG pr_reg
	#define PR_FLAGS pr_flags
	#endif
	#endif

	/* Trace Control Block */
	struct tcb {
	short flags; /* See below for TCB_ values */
	int pid; /* Process Id of this entry */
	long scno; /* System call number */
	int u_nargs; /* System call arguments */
	long u_arg[MAX_ARGS]; /* System call arguments */
	int u_error; /* Error code */
	long u_rval; /* (first) return value */
	FILE outf; / Output file for this process */
	char auxstr; / Auxiliary info from syscall (see RVAL_STR) */
	struct timeval stime; /* System time usage as of last process wait */
	struct timeval dtime; /* Delta for system time usage */
	struct timeval etime; /* Syscall entry time */
	/* Support for tracing forked processes */
	struct tcb parent; / Parent of this process */
	int nchildren; /* # of traced children */
	int waitpid; /* pid(s) this process is waiting for */
	/* (1st arg of wait4()) */
	long baddr; /* `Breakpoint' address */
	long inst[2]; /* Instructions on above */
	int pfd; /* proc file descriptor */
	#ifdef SVR4
	#ifdef SVR4_MP
	int pfd_stat;
	int pfd_as;
	pstatus_t status;
	#else
	prstatus_t status; /* procfs status structure */
	#endif
	#endif
	};

	/* TCB flags */
	#define TCB_STARTUP 00001 /* We have just begun ptracing this process */
	#define TCB_INUSE 00002 /* This table entry is in use */
	#define TCB_INSYSCALL 00004 /* A system call is in progress */
	#define TCB_ATTACHED 00010 /* Process is not our own child */
	#define TCB_EXITING 00020 /* As far as we know, this process is exiting */
	#define TCB_SUSPENDED 00040 /* Process has done a wait(4), that can
	not be allowed to complete just now */
	#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
	#define TCB_SIGTRAPPED 00200 /* Process wanted to block SIGTRAP */
	#define TCB_FOLLOWFORK 00400 /* Process should have forks followed */
	#define TCB_REPRINT 01000 /* We should reprint this syscall on exit */
	#ifdef LINUX
	#if defined(ALPHA) \|\| defined(SPARC) \|\| defined(POWERPC)
	#define TCB_WAITEXECVE 02000 /* ignore SIGTRAP after exceve */
	#endif /* ALPHA */
	#endif /* LINUX */

	/* qualifier flags */
	#define QUAL_TRACE 0001 /* this system call should be traced */
	#define QUAL_ABBREV 0002 /* abbreviate the structures of this syscall */
	#define QUAL_VERBOSE 0004 /* decode the structures of this syscall */
	#define QUAL_RAW 0010 /* print all args in hex for this syscall */
	#define QUAL_SIGNAL 0020 /* report events with this signal */
	#define QUAL_FAULT 0040 /* report events with this fault */
	#define QUAL_READ 0100 /* dump data read on this file descriptor */
	#define QUAL_WRITE 0200 /* dump data written to this file descriptor */

	#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
	#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
	#define syserror(tcp) ((tcp)->u_error != 0)
	#define verbose(tcp) (qual_flags[(tcp)->scno] & QUAL_VERBOSE)
	#define abbrev(tcp) (qual_flags[(tcp)->scno] & QUAL_ABBREV)
	#define waiting_parent(tcp) \
	(tcp->parent && \
	(tcp->parent->flags & TCB_SUSPENDED) && \
	(tcp->parent->waitpid <= 0 \|\| tcp->parent->waitpid == tcp->pid))

	struct xlat {
	int val;
	char *str;
	};

	/* Format of syscall return values */
	#define RVAL_DECIMAL 000 /* decimal format */
	#define RVAL_HEX 001 /* hex format */
	#define RVAL_OCTAL 002 /* octal format */
	#define RVAL_UDECIMAL 003 /* unsigned decimal format */
	#define RVAL_MASK 007 /* mask for these values */

	#define RVAL_STR 010 /* Print `auxstr' field after return val */
	#define RVAL_NONE 020 /* Print nothing */

	#ifndef offsetof
	#define offsetof(type, member) (((char ) &(((type ) NULL)->member)) - \
	((char ) (type ) NULL))
	#endif /* !offsetof */

	/* get offset of member within a user struct */
	#define uoff(member) offsetof(struct user, member)

	#define TRACE_FILE 001 /* Trace file-related syscalls. */
	#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
	#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
	#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
	#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */

	extern struct tcb tcbtab[];
	extern int qual_flags[];
	extern int debug, followfork, followvfork;
	extern int rflag, tflag, dtime, cflag, xflag, qflag;
	extern int acolumn;
	extern char *outfname;
	extern int nprocs;
	extern int max_strlen;
	extern struct tcb *tcp_last;

	#ifdef __STDC__
	#define P(args) args
	#else
	#define P(args) ()
	#endif

	extern int set_personality P((int personality));
	extern char xlookup P((struct xlat , int));
	extern struct tcb *alloctcb P((int));
	extern void droptcb P((struct tcb *));

	extern void set_sortby P((char *));
	extern void set_overhead P((int));
	extern void qualify P((char *));
	extern void newoutf P((struct tcb *));
	extern int trace_syscall P((struct tcb *));
	extern void printxval P((struct xlat , int, char ));
	extern int printargs P((struct tcb *));
	extern int addflags P((struct xlat *, int));
	extern int printflags P((struct xlat *, int));
	extern int umoven P((struct tcb , long, int, char ));
	extern int umovestr P((struct tcb , long, int, char ));
	extern int upeek P((int, long, long *));
	extern void dumpstr P((struct tcb *, long, int));
	extern void string_quote P((char *str));
	extern void printstr P((struct tcb *, long, int));
	extern void printnum P((struct tcb , long, char ));
	extern void printpath P((struct tcb *, long));
	extern void printpathn P((struct tcb *, long, int));
	extern void printtv P((struct tcb *, long));
	extern void printsock P((struct tcb *, long, int));
	extern void printrusage P((struct tcb *, long));
	extern int clearbpt P((struct tcb *));
	extern int setbpt P((struct tcb *));
	extern int sigishandled P((struct tcb *, int));
	extern void printcall P((struct tcb *));
	extern char *signame P((int));
	extern void printsignal P((int));
	extern void printleader P((struct tcb *));
	extern void printtrailer P((struct tcb *));
	extern void tabto P((int));
	extern void call_summary P((FILE *));
	extern void fake_execve P((struct tcb , char , char [], char []));

	extern int internal_fork P((struct tcb *));
	extern int internal_exec P((struct tcb *));
	extern int internal_wait P((struct tcb *));
	extern int internal_exit P((struct tcb *));

	extern char *ioctl_lookup P((long));
	extern int ioctl_decode P((struct tcb *, long, long));
	extern int term_ioctl P((struct tcb *, long, long));
	extern int sock_ioctl P((struct tcb *, long, long));
	extern int proc_ioctl P((struct tcb *, int, int));
	extern int stream_ioctl P((struct tcb *, int, int));

	extern void tv_tv P((struct timeval *, int, int));
	extern int tv_nz P((struct timeval *));
	extern int tv_cmp P((struct timeval , struct timeval ));
	extern double tv_float P((struct timeval *));
	extern void tv_add P((struct timeval , struct timeval , struct timeval *));
	extern void tv_sub P((struct timeval , struct timeval , struct timeval *));
	extern void tv_mul P((struct timeval , struct timeval , int));
	extern void tv_div P((struct timeval , struct timeval , int));

	#ifdef SUNOS4
	extern int fixvfork P((struct tcb *));
	#endif
	#if !(defined(LINUX) && !defined(SPARC))
	extern long getrval2 P((struct tcb *));
	#endif
	#ifdef SVR4
	extern int proc_open P((struct tcb *tcp, int attaching));
	#endif

	#define umove(pid, addr, objp) \
	umoven((pid), (addr), sizeof (objp), (char ) (objp))

	#ifdef __STDC__
	#ifdef __GNUC__
	extern void tprintf(const char *fmt, ...)
	__attribute__ ((format (printf, 1, 2)));
	#else
	extern void tprintf(const char *fmt, ...);
	#endif
	#else
	extern void tprintf();
	#endif

	#ifndef HAVE_STRERROR
	const char *strerror P((int));
	#endif
	#ifndef HAVE_STRSIGNAL
	const char *strsignal P((int));
	#endif

	extern int current_personality;

	struct sysent {
	int nargs;
	int sys_flags;
	int (*sys_func)();
	char *sys_name;
	};

	extern struct sysent *sysent;
	extern int nsyscalls;

	extern char **errnoent;
	extern int nerrnos;

	struct ioctlent {
	char *doth;
	char *symbol;
	unsigned long code;
	};

	extern struct ioctlent *ioctlent;
	extern int nioctlent;

	extern char **signalent;
	extern int nsignals;

	extern struct ioctlent *ioctlent;
	extern int nioctlents;
	extern char **signalent;
	extern int nsignals;

	extern struct ioctlent ioctlent0[];
	extern int nioctlents0;
	extern char *signalent0[];
	extern int nsignals0;

	#if SUPPORTED_PERSONALITIES >= 2
	extern struct ioctlent ioctlent1[];
	extern int nioctlents1;
	extern char *signalent1[];
	extern int nsignals1;
	#endif /* SUPPORTED_PERSONALITIES >= 2 */

	#if SUPPORTED_PERSONALITIES >= 3
	extern struct ioctlent ioctlent2[];
	extern int nioctlents2;
	extern char *signalent2[];
	extern int nsignals2;
	#endif /* SUPPORTED_PERSONALITIES >= 3 */