129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/kerneldump.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/md_var.h>
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CTASSERT(sizeof(struct kerneldumpheader) == 512);
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static struct kerneldumpheader kdh;
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void
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dumpsys(struct dumperinfo *di)
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{
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off_t dumplo;
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vm_offset_t a, addr;
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u_int count, left, u;
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void *va;
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int i, mb;
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printf("Dumping %ld MB\n", Maxmem / (1024*1024 / PAGE_SIZE));
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/* Fill in the kernel dump header */
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strcpy(kdh.magic, KERNELDUMPMAGIC);
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strcpy(kdh.architecture, "alpha");
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kdh.version = htod32(KERNELDUMPVERSION);
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kdh.architectureversion = htod32(KERNELDUMP_ALPHA_VERSION);
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kdh.dumplength = htod64(Maxmem * (off_t)PAGE_SIZE);
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kdh.dumptime = htod64(time_second);
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kdh.blocksize = htod32(di->blocksize);
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strncpy(kdh.hostname, hostname, sizeof kdh.hostname);
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strncpy(kdh.versionstring, version, sizeof kdh.versionstring);
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if (panicstr != NULL)
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strncpy(kdh.panicstring, panicstr, sizeof kdh.panicstring);
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kdh.parity = kerneldump_parity(&kdh);
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/*
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* Check if we will have enough room to save the coredump.
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* The partition size needed is the sum of:
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* Memory to save + header + trailer + Room to leave untouched
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* at partition head. (an arbitrary amount).
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*/
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if (di->mediasize <
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Maxmem * (off_t)PAGE_SIZE + sizeof kdh * 2 + 64*1024) {
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printf("\nDump failed. Partition too small.\n");
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return;
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}
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dumplo = di->mediaoffset + di->mediasize - Maxmem * (off_t)PAGE_SIZE;
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dumplo -= sizeof kdh * 2;
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i = di->dumper(di->priv, &kdh, NULL, dumplo, sizeof kdh);
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if (i)
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printf("\nDump failed writing header (%d)\n", i);
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dumplo += sizeof kdh;
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i = 0;
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addr = 0;
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va = 0;
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mb = 0;
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for (count = 0; count < Maxmem;) {
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left = Maxmem - count;
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if (left > MAXDUMPPGS)
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left = MAXDUMPPGS;
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for (u = 0; u < left; u++) {
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a = addr + u * PAGE_SIZE;
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if (!is_physical_memory(a))
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a = 0;
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va = pmap_kenter_temporary(trunc_page(a), u);
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}
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i = count / (16*1024*1024 / PAGE_SIZE);
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if (i != mb) {
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printf(" %d", count / (1024 * 1024 / PAGE_SIZE));
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mb = i;
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}
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i = di->dumper(di->priv, va, NULL, dumplo, left * PAGE_SIZE);
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if (i)
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break;
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count += left;
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dumplo += left * PAGE_SIZE;
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addr += left * PAGE_SIZE;
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}
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if (i)
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printf("\nDump failed writing data (%d)\n", i);
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i = di->dumper(di->priv, &kdh, NULL, dumplo, sizeof kdh);
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if (i)
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printf("\nDump failed writing trailer (%d)\n", i);
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di->dumper(di->priv, NULL, NULL, 0, 0); /* tell them we are done */
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printf("\nDump complete\n");
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return;
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}
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