lib/libkvm/kvm_private.h

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software developed by the Computer Systems
   6  * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
   7  * BG 91-66 and contributed to Berkeley.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)kvm_private.h       8.1 (Berkeley) 6/4/93
  34  * $FreeBSD: src/lib/libkvm/kvm_private.h,v 1.5 1999/12/27 07:14:58 peter Exp $
  35  * $DragonFly: src/lib/libkvm/kvm_private.h,v 1.4 2007/02/01 10:33:25 corecode Exp $
  36  */
  37
  38 struct __kvm {
  39         /*
  40          * a string to be prepended to error messages
  41          * provided for compatibility with sun's interface
  42          * if this value is null, errors are saved in errbuf[]
  43          */
  44         const char *program;
  45         char    *errp;          /* XXX this can probably go away */
  46         char    errbuf[_POSIX2_LINE_MAX];
  47         int     pmfd;           /* physical memory file (or crashdump) */
  48         int     vmfd;           /* virtual memory file (-1 if crashdump) */
  49         int     flags;          /* was: swap file (e.g., /dev/drum) */
  50         int     nlfd;           /* namelist file (e.g., /kernel) */
  51         struct kinfo_proc *procbase;
  52         struct kinfo_proc *procend;
  53         char    *argspc;        /* (dynamic) storage for argv strings */
  54         int     arglen;         /* length of the above */
  55         char    **argv;         /* (dynamic) storage for argv pointers */
  56         int     argc;           /* length of above (not actual # present) */
  57         char    *argbuf;        /* (dynamic) temporary storage */
  58         /*
  59          * Kernel virtual address translation state.  This only gets filled
  60          * in for dead kernels; otherwise, the running kernel (i.e. kmem)
  61          * will do the translations for us.  It could be big, so we
  62          * only allocate it if necessary.
  63          */
  64         struct vmstate *vmst;
  65         int     rawdump;        /* raw dump format */
  66 };
  67
  68 enum {
  69         KVMF_HOST = 0x1,
  70         KVMF_VKERN = 0x2,
  71 };
  72
  73 static inline
  74 int
  75 kvm_ishost(kvm_t *kd)
  76 {
  77         return kd->flags & KVMF_HOST;
  78 }
  79
  80 static inline
  81 int
  82 kvm_isvkernel(kvm_t *kd)
  83 {
  84         return kd->flags & KVMF_VKERN;
  85 }
  86
  87 static inline
  88 int
  89 kvm_notrans(kvm_t *kd)
  90 {
  91         return kvm_ishost(kd) || kvm_isvkernel(kd);
  92 }
  93
  94 /*
  95  * Functions used internally by kvm, but across kvm modules.
  96  */
  97 void     _kvm_err (kvm_t *kd, const char *program, const char *fmt, ...)
  98              __printflike(3, 4);
  99 void     _kvm_freeprocs (kvm_t *kd);
 100 void     _kvm_freevtop (kvm_t *);
 101 int      _kvm_initvtop (kvm_t *);
 102 int      _kvm_kvatop (kvm_t *, u_long, off_t *);
 103 void    *_kvm_malloc (kvm_t *kd, size_t);
 104 void    *_kvm_realloc (kvm_t *kd, void *, size_t);
 105 void     _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...)
 106              __printflike(3, 4);
 107 int      _kvm_uvatop (kvm_t *, const struct proc *, u_long, u_long *);
 108 void     _kvm_minidump_freevtop(kvm_t *);
 109 int      _kvm_minidump_initvtop(kvm_t *);
 110 int      _kvm_minidump_kvatop(kvm_t *, u_long, off_t *);