defs.h

linux进程跟踪的工具和源代码

/*
 * Copyright (c) 1991, 1992 Paul Kranenburg <[e-mail]>
 * Copyright (c) 1993 Branko Lankester <[e-mail]>
 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <[e-mail]>
 * 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: defs.h,v 1.24 2001/03/28 08:05:27 hughesj Exp $
 */

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

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

/* configuration section */
#ifndef MAX_QUALS
#if defined(linux) && defined(MIPS)
#define MAX_QUALS	4999	/* maximum number of syscalls, signals, etc. */
#else
#define MAX_QUALS	2048	/* maximum number of syscalls, signals, etc. */
#endif
#endif
#ifndef MAX_PROCS
#define MAX_PROCS	64	/* 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 <time.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 

#if defined(SVR4) || defined(FREEBSD)
#define USE_PROCFS
#else
#undef USE_PROCFS
#endif

#ifdef FREEBSD
#ifndef I386
#error "FreeBSD support is only for i386 arch right now."
#endif
#include <machine/psl.h>
#include <machine/reg.h>
#include <sys/syscall.h>
#endif

#ifdef USE_PROCFS
#include <sys/procfs.h>
#ifdef HAVE_MP_PROCFS
#include <sys/uio.h>
#endif
#ifdef FREEBSD
#include <sys/pioctl.h>
#endif /* FREEBSD */
#else /* !USE_PROCFS */
#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 */
#ifdef HPPA
#  define PT_GR20 (20*4)
#  define PT_GR26 (26*4)
#  define PT_GR28 (28*4)
#  define PT_IAOQ0 (106*4)
#  define PT_IAOQ1 (107*4)
#endif /* HPPA */
#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 HAVE_MP_PROCFS
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, (char *)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 PR_SYSCALL	pr_lwp.pr_syscall
#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
#define PR_SYSCALL	pr_syscall
#endif
#endif
#ifdef FREEBSD
#define IOCTL		ioctl
#define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
#define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWAIT, &t->status)
#define PIOCRUN         PIOCCONT
#define PIOCWSTOP       PIOCWAIT
#define PR_WHY		why
#define PR_WHAT		val
#define PR_FLAGS	state
/* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
   status.state = 0 for running, 1 for stopped */
#define PR_ASLEEP	1
#define PR_SYSENTRY     S_SCE
#define PR_SYSEXIT      S_SCX
#define PR_SIGNALLED    S_SIG
#define PR_FAULTED      S_CORE
#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 */
#ifdef HAVE_LONG_LONG
	long long u_lrval;	/* long long return value */
#endif
	FILE *outf;		/* Output file for this process */
	const 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 HAVE_MP_PROCFS
	int pfd_stat;
	int pfd_as;
	pstatus_t status;
#else
	prstatus_t status;	/* procfs status structure */
#endif
#endif
#ifdef FREEBSD