cf087c12c2
Modelled after the i386 zfsloader. However, with no 2nd stage zfsboot to search for a bootable dataset, attempt a ZFS boot if there is more than one ZFS dataset found during the disk probe. sys/boot/userboot/zfs - build the ZFS boot library sys/boot/userboot/userboot/ conf.c - Add the ZFS pool and filesystem tables devicename.c - correctly format ZFS devices main.c - increase the size of the libstand malloc pool to account for the increased usage from ZFS buffers - probe for a ZFS dataset, and if one is found, attempt to boot from it. usr.sbin/bhyveload/bhyveload.c - allow multiple invocations of the '-d' option to specify multiple disks e.g. a raidz set. Up to 32 disks are supported. Tested with various combinations of GPT, MBR, single and multiple disks, RAID-Z, mirrors. Reviewed by: neel Discussed with: avg Tested by: Michael Dexter and others MFC after: 3 weeks
736 lines
13 KiB
C
736 lines
13 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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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/*-
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* Copyright (c) 2011 Google, Inc.
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* All rights reserved.
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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
|
|
* documentation and/or other materials provided with the distribution.
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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
|
|
* 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/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/disk.h>
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#include <sys/queue.h>
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#include <machine/specialreg.h>
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#include <machine/vmm.h>
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#include <dirent.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <err.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <termios.h>
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#include <unistd.h>
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#include <vmmapi.h>
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#include "userboot.h"
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#define MB (1024 * 1024UL)
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#define GB (1024 * 1024 * 1024UL)
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#define BSP 0
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#define NDISKS 32
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static char *host_base;
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static struct termios term, oldterm;
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static int disk_fd[NDISKS];
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static int ndisks;
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static int consin_fd, consout_fd;
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static char *vmname, *progname;
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static struct vmctx *ctx;
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static uint64_t gdtbase, cr3, rsp;
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static void cb_exit(void *arg, int v);
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/*
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* Console i/o callbacks
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*/
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static void
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cb_putc(void *arg, int ch)
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{
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char c = ch;
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(void) write(consout_fd, &c, 1);
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}
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static int
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cb_getc(void *arg)
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{
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char c;
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if (read(consin_fd, &c, 1) == 1)
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return (c);
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return (-1);
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}
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static int
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cb_poll(void *arg)
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{
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int n;
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if (ioctl(consin_fd, FIONREAD, &n) >= 0)
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return (n > 0);
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return (0);
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}
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/*
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* Host filesystem i/o callbacks
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*/
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struct cb_file {
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int cf_isdir;
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size_t cf_size;
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struct stat cf_stat;
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union {
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int fd;
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DIR *dir;
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} cf_u;
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};
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static int
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cb_open(void *arg, const char *filename, void **hp)
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{
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struct stat st;
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struct cb_file *cf;
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char path[PATH_MAX];
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if (!host_base)
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return (ENOENT);
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strlcpy(path, host_base, PATH_MAX);
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if (path[strlen(path) - 1] == '/')
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path[strlen(path) - 1] = 0;
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strlcat(path, filename, PATH_MAX);
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cf = malloc(sizeof(struct cb_file));
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if (stat(path, &cf->cf_stat) < 0) {
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free(cf);
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return (errno);
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}
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cf->cf_size = st.st_size;
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if (S_ISDIR(cf->cf_stat.st_mode)) {
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cf->cf_isdir = 1;
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cf->cf_u.dir = opendir(path);
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if (!cf->cf_u.dir)
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goto out;
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*hp = cf;
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return (0);
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}
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if (S_ISREG(cf->cf_stat.st_mode)) {
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cf->cf_isdir = 0;
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cf->cf_u.fd = open(path, O_RDONLY);
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if (cf->cf_u.fd < 0)
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goto out;
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*hp = cf;
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return (0);
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}
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out:
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free(cf);
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return (EINVAL);
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}
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static int
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cb_close(void *arg, void *h)
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{
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struct cb_file *cf = h;
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if (cf->cf_isdir)
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closedir(cf->cf_u.dir);
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else
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close(cf->cf_u.fd);
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free(cf);
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return (0);
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}
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static int
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cb_isdir(void *arg, void *h)
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{
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struct cb_file *cf = h;
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return (cf->cf_isdir);
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}
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static int
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cb_read(void *arg, void *h, void *buf, size_t size, size_t *resid)
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{
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struct cb_file *cf = h;
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ssize_t sz;
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if (cf->cf_isdir)
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return (EINVAL);
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sz = read(cf->cf_u.fd, buf, size);
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if (sz < 0)
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return (EINVAL);
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*resid = size - sz;
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return (0);
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}
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static int
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cb_readdir(void *arg, void *h, uint32_t *fileno_return, uint8_t *type_return,
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size_t *namelen_return, char *name)
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{
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struct cb_file *cf = h;
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struct dirent *dp;
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if (!cf->cf_isdir)
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return (EINVAL);
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dp = readdir(cf->cf_u.dir);
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if (!dp)
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return (ENOENT);
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/*
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* Note: d_namlen is in the range 0..255 and therefore less
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* than PATH_MAX so we don't need to test before copying.
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*/
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*fileno_return = dp->d_fileno;
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*type_return = dp->d_type;
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*namelen_return = dp->d_namlen;
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memcpy(name, dp->d_name, dp->d_namlen);
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name[dp->d_namlen] = 0;
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return (0);
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}
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static int
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cb_seek(void *arg, void *h, uint64_t offset, int whence)
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{
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struct cb_file *cf = h;
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if (cf->cf_isdir)
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return (EINVAL);
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if (lseek(cf->cf_u.fd, offset, whence) < 0)
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return (errno);
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return (0);
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}
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static int
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cb_stat(void *arg, void *h, int *mode, int *uid, int *gid, uint64_t *size)
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{
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struct cb_file *cf = h;
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*mode = cf->cf_stat.st_mode;
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*uid = cf->cf_stat.st_uid;
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*gid = cf->cf_stat.st_gid;
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*size = cf->cf_stat.st_size;
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return (0);
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}
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/*
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* Disk image i/o callbacks
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*/
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static int
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cb_diskread(void *arg, int unit, uint64_t from, void *to, size_t size,
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size_t *resid)
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{
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ssize_t n;
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if (unit < 0 || unit >= ndisks )
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return (EIO);
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n = pread(disk_fd[unit], to, size, from);
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if (n < 0)
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return (errno);
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*resid = size - n;
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return (0);
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}
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static int
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cb_diskioctl(void *arg, int unit, u_long cmd, void *data)
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{
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struct stat sb;
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if (unit < 0 || unit >= ndisks)
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return (EBADF);
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switch (cmd) {
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case DIOCGSECTORSIZE:
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*(u_int *)data = 512;
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break;
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case DIOCGMEDIASIZE:
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if (fstat(disk_fd[unit], &sb) == 0)
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*(off_t *)data = sb.st_size;
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else
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return (ENOTTY);
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break;
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default:
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return (ENOTTY);
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}
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return (0);
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}
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/*
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* Guest virtual machine i/o callbacks
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*/
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static int
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cb_copyin(void *arg, const void *from, uint64_t to, size_t size)
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{
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char *ptr;
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to &= 0x7fffffff;
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ptr = vm_map_gpa(ctx, to, size);
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if (ptr == NULL)
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return (EFAULT);
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memcpy(ptr, from, size);
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return (0);
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}
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static int
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cb_copyout(void *arg, uint64_t from, void *to, size_t size)
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{
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char *ptr;
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from &= 0x7fffffff;
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ptr = vm_map_gpa(ctx, from, size);
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if (ptr == NULL)
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return (EFAULT);
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memcpy(to, ptr, size);
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return (0);
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}
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static void
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cb_setreg(void *arg, int r, uint64_t v)
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{
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int error;
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enum vm_reg_name vmreg;
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vmreg = VM_REG_LAST;
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switch (r) {
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case 4:
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vmreg = VM_REG_GUEST_RSP;
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rsp = v;
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break;
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default:
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break;
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}
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if (vmreg == VM_REG_LAST) {
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printf("test_setreg(%d): not implemented\n", r);
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
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}
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error = vm_set_register(ctx, BSP, vmreg, v);
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if (error) {
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perror("vm_set_register");
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
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}
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}
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static void
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cb_setmsr(void *arg, int r, uint64_t v)
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{
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int error;
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enum vm_reg_name vmreg;
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vmreg = VM_REG_LAST;
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switch (r) {
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case MSR_EFER:
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vmreg = VM_REG_GUEST_EFER;
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break;
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default:
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break;
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}
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if (vmreg == VM_REG_LAST) {
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printf("test_setmsr(%d): not implemented\n", r);
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
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}
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error = vm_set_register(ctx, BSP, vmreg, v);
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if (error) {
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perror("vm_set_msr");
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
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}
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}
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static void
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cb_setcr(void *arg, int r, uint64_t v)
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{
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int error;
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enum vm_reg_name vmreg;
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vmreg = VM_REG_LAST;
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switch (r) {
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case 0:
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vmreg = VM_REG_GUEST_CR0;
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break;
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case 3:
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vmreg = VM_REG_GUEST_CR3;
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cr3 = v;
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break;
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case 4:
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vmreg = VM_REG_GUEST_CR4;
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break;
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default:
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break;
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}
|
|
|
|
if (vmreg == VM_REG_LAST) {
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printf("test_setcr(%d): not implemented\n", r);
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
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}
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|
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error = vm_set_register(ctx, BSP, vmreg, v);
|
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if (error) {
|
|
perror("vm_set_cr");
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cb_exit(NULL, USERBOOT_EXIT_QUIT);
|
|
}
|
|
}
|
|
|
|
static void
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cb_setgdt(void *arg, uint64_t base, size_t size)
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|
{
|
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int error;
|
|
|
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error = vm_set_desc(ctx, BSP, VM_REG_GUEST_GDTR, base, size - 1, 0);
|
|
if (error != 0) {
|
|
perror("vm_set_desc(gdt)");
|
|
cb_exit(NULL, USERBOOT_EXIT_QUIT);
|
|
}
|
|
|
|
gdtbase = base;
|
|
}
|
|
|
|
static void
|
|
cb_exec(void *arg, uint64_t rip)
|
|
{
|
|
int error;
|
|
|
|
if (cr3 == 0)
|
|
error = vm_setup_freebsd_registers_i386(ctx, BSP, rip, gdtbase,
|
|
rsp);
|
|
else
|
|
error = vm_setup_freebsd_registers(ctx, BSP, rip, cr3, gdtbase,
|
|
rsp);
|
|
if (error) {
|
|
perror("vm_setup_freebsd_registers");
|
|
cb_exit(NULL, USERBOOT_EXIT_QUIT);
|
|
}
|
|
|
|
cb_exit(NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* Misc
|
|
*/
|
|
|
|
static void
|
|
cb_delay(void *arg, int usec)
|
|
{
|
|
|
|
usleep(usec);
|
|
}
|
|
|
|
static void
|
|
cb_exit(void *arg, int v)
|
|
{
|
|
|
|
tcsetattr(consout_fd, TCSAFLUSH, &oldterm);
|
|
exit(v);
|
|
}
|
|
|
|
static void
|
|
cb_getmem(void *arg, uint64_t *ret_lowmem, uint64_t *ret_highmem)
|
|
{
|
|
|
|
vm_get_memory_seg(ctx, 0, ret_lowmem, NULL);
|
|
vm_get_memory_seg(ctx, 4 * GB, ret_highmem, NULL);
|
|
}
|
|
|
|
struct env {
|
|
const char *str; /* name=value */
|
|
SLIST_ENTRY(env) next;
|
|
};
|
|
|
|
static SLIST_HEAD(envhead, env) envhead;
|
|
|
|
static void
|
|
addenv(const char *str)
|
|
{
|
|
struct env *env;
|
|
|
|
env = malloc(sizeof(struct env));
|
|
env->str = str;
|
|
SLIST_INSERT_HEAD(&envhead, env, next);
|
|
}
|
|
|
|
static const char *
|
|
cb_getenv(void *arg, int num)
|
|
{
|
|
int i;
|
|
struct env *env;
|
|
|
|
i = 0;
|
|
SLIST_FOREACH(env, &envhead, next) {
|
|
if (i == num)
|
|
return (env->str);
|
|
i++;
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
static struct loader_callbacks cb = {
|
|
.getc = cb_getc,
|
|
.putc = cb_putc,
|
|
.poll = cb_poll,
|
|
|
|
.open = cb_open,
|
|
.close = cb_close,
|
|
.isdir = cb_isdir,
|
|
.read = cb_read,
|
|
.readdir = cb_readdir,
|
|
.seek = cb_seek,
|
|
.stat = cb_stat,
|
|
|
|
.diskread = cb_diskread,
|
|
.diskioctl = cb_diskioctl,
|
|
|
|
.copyin = cb_copyin,
|
|
.copyout = cb_copyout,
|
|
.setreg = cb_setreg,
|
|
.setmsr = cb_setmsr,
|
|
.setcr = cb_setcr,
|
|
.setgdt = cb_setgdt,
|
|
.exec = cb_exec,
|
|
|
|
.delay = cb_delay,
|
|
.exit = cb_exit,
|
|
.getmem = cb_getmem,
|
|
|
|
.getenv = cb_getenv,
|
|
};
|
|
|
|
static int
|
|
altcons_open(char *path)
|
|
{
|
|
struct stat sb;
|
|
int err;
|
|
int fd;
|
|
|
|
/*
|
|
* Allow stdio to be passed in so that the same string
|
|
* can be used for the bhyveload console and bhyve com-port
|
|
* parameters
|
|
*/
|
|
if (!strcmp(path, "stdio"))
|
|
return (0);
|
|
|
|
err = stat(path, &sb);
|
|
if (err == 0) {
|
|
if (!S_ISCHR(sb.st_mode))
|
|
err = ENOTSUP;
|
|
else {
|
|
fd = open(path, O_RDWR | O_NONBLOCK);
|
|
if (fd < 0)
|
|
err = errno;
|
|
else
|
|
consin_fd = consout_fd = fd;
|
|
}
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
disk_open(char *path)
|
|
{
|
|
int err, fd;
|
|
|
|
if (ndisks > NDISKS)
|
|
return (ERANGE);
|
|
|
|
err = 0;
|
|
fd = open(path, O_RDONLY);
|
|
|
|
if (fd > 0) {
|
|
disk_fd[ndisks] = fd;
|
|
ndisks++;
|
|
} else
|
|
err = errno;
|
|
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"usage: %s [-m mem-size] [-d <disk-path>] [-h <host-path>]\n"
|
|
" %*s [-e <name=value>] [-c <console-device>] <vmname>\n",
|
|
progname,
|
|
(int)strlen(progname), "");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char** argv)
|
|
{
|
|
void *h;
|
|
void (*func)(struct loader_callbacks *, void *, int, int);
|
|
uint64_t mem_size;
|
|
int opt, error;
|
|
|
|
progname = basename(argv[0]);
|
|
|
|
mem_size = 256 * MB;
|
|
|
|
consin_fd = STDIN_FILENO;
|
|
consout_fd = STDOUT_FILENO;
|
|
|
|
while ((opt = getopt(argc, argv, "c:d:e:h:m:")) != -1) {
|
|
switch (opt) {
|
|
case 'c':
|
|
error = altcons_open(optarg);
|
|
if (error != 0)
|
|
errx(EX_USAGE, "Could not open '%s'", optarg);
|
|
break;
|
|
|
|
case 'd':
|
|
error = disk_open(optarg);
|
|
if (error != 0)
|
|
errx(EX_USAGE, "Could not open '%s'", optarg);
|
|
break;
|
|
|
|
case 'e':
|
|
addenv(optarg);
|
|
break;
|
|
|
|
case 'h':
|
|
host_base = optarg;
|
|
break;
|
|
|
|
case 'm':
|
|
error = vm_parse_memsize(optarg, &mem_size);
|
|
if (error != 0)
|
|
errx(EX_USAGE, "Invalid memsize '%s'", optarg);
|
|
break;
|
|
case '?':
|
|
usage();
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
vmname = argv[0];
|
|
|
|
error = vm_create(vmname);
|
|
if (error != 0 && errno != EEXIST) {
|
|
perror("vm_create");
|
|
exit(1);
|
|
|
|
}
|
|
|
|
ctx = vm_open(vmname);
|
|
if (ctx == NULL) {
|
|
perror("vm_open");
|
|
exit(1);
|
|
}
|
|
|
|
error = vm_setup_memory(ctx, mem_size, VM_MMAP_ALL);
|
|
if (error) {
|
|
perror("vm_setup_memory");
|
|
exit(1);
|
|
}
|
|
|
|
tcgetattr(consout_fd, &term);
|
|
oldterm = term;
|
|
cfmakeraw(&term);
|
|
term.c_cflag |= CLOCAL;
|
|
|
|
tcsetattr(consout_fd, TCSAFLUSH, &term);
|
|
|
|
h = dlopen("/boot/userboot.so", RTLD_LOCAL);
|
|
if (!h) {
|
|
printf("%s\n", dlerror());
|
|
return (1);
|
|
}
|
|
func = dlsym(h, "loader_main");
|
|
if (!func) {
|
|
printf("%s\n", dlerror());
|
|
return (1);
|
|
}
|
|
|
|
addenv("smbios.bios.vendor=BHYVE");
|
|
addenv("boot_serial=1");
|
|
|
|
func(&cb, NULL, USERBOOT_VERSION_3, ndisks);
|
|
}
|