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