libgrubmgmt/common/libgrub_cmd.c

753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * CDDL HEADER START
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore *
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * The contents of this file are subject to the terms of the
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Common Development and Distribution License (the "License").
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * You may not use this file except in compliance with the License.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore *
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * or http://www.opensolaris.org/os/licensing.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * See the License for the specific language governing permissions
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * and limitations under the License.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore *
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * When distributing Covered Code, include this CDDL HEADER in each
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * If applicable, add the following below this CDDL HEADER, with the
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * fields enclosed by brackets "[]" replaced with your own identifying
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * information: Portions Copyright [yyyy] [name of copyright owner]
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore *
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * CDDL HEADER END
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Use is subject to license terms.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
1a902ef8628b0dffd6df5442354ab59bb8530962Hans Rosenfeld/*
1a902ef8628b0dffd6df5442354ab59bb8530962Hans Rosenfeld * Copyright 2015 Nexenta Systems, Inc.
1a902ef8628b0dffd6df5442354ab59bb8530962Hans Rosenfeld */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * This file contains all the functions that implement the following
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * GRUB commands:
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore *  kernel, kernel$, module, module$, findroot, bootfs
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Return 0 on success, errno on failure.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <stdio.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <stdlib.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <assert.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <alloca.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <errno.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <strings.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <unistd.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <fcntl.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <sys/types.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <sys/fs/ufs_mount.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <sys/dktp/fdisk.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#if defined(__i386)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include <sys/x86_archext.h>
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#endif /* __i386 */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#include "libgrub_impl.h"
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#define RESET_MODULE(barg)  ((barg)->gb_module[0] = 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev#define BPROP_ZFSBOOTFS "zfs-bootfs"
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev#define BPROP_BOOTPATH  "bootpath"
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#if defined(__i386)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic const char cpuid_dev[] = "/dev/cpu/self/cpuid";
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Return 1 if the system supports 64-bit mode, 0 if it doesn't,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * or -1 on failure.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic int
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorecpuid_64bit_capable(void)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int fd, ret = -1;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    struct {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        uint32_t cp_eax, cp_ebx, cp_ecx, cp_edx;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    } cpuid_regs;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if ((fd = open(cpuid_dev, O_RDONLY)) == -1)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (pread(fd, &cpuid_regs, sizeof (cpuid_regs), 0x80000001) ==
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sizeof (cpuid_regs))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ret = ((CPUID_AMD_EDX_LM & cpuid_regs.cp_edx) != 0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    (void) close(fd);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#endif /* __i386 */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Expand $ISAIDR
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#if !defined(__i386)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/* ARGSUSED */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#endif /* __i386 */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic size_t
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorebarg_isadir_var(char *var, int sz)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#if defined(__i386)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (cpuid_64bit_capable() == 1)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (strlcpy(var, "amd64", sz));
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore#endif /* __i386 */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    var[0] = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Expand $ZFS-BOOTFS
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic size_t
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorebarg_bootfs_var(const grub_barg_t *barg, char *var, int sz)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int n;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    assert(barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strcmp(barg->gb_root.gr_fstyp, MNTTYPE_ZFS) == 0) {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        n = snprintf(var, sz,
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            BPROP_ZFSBOOTFS "=%s," BPROP_BOOTPATH "=\"%s\"",
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            barg->gb_root.gr_fs[GRBM_ZFS_BOOTFS].gfs_dev,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            barg->gb_root.gr_physpath);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    } else  {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        var[0] = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        n = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    }
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (n);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore * Expand all the variables without appending them more than once.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic int
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreexpand_var(char *arg, size_t argsz, const char *var, size_t varsz,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char *val, size_t valsz)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char    *sp = arg;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    size_t  sz = argsz, len;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char    *buf, *dst, *src;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int ret = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    buf = alloca(argsz);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    dst = buf;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    while ((src = strstr(sp, var)) != NULL) {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        len = src - sp;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        if (len + valsz > sz) {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            ret = E2BIG;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            break;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        }
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (void) bcopy(sp, dst, len);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (void) bcopy(val, dst + len, valsz);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        dst += len + valsz;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sz -= len + valsz;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sp = src + varsz;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    }
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(dst, sp, sz) >= sz)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ret = E2BIG;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (ret == 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        bcopy(buf, arg, argsz);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev/*
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev * Searches first occurence of boot-property 'bprop' in str.
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev * str supposed to be in format:
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev * " [-B prop=[value][,prop=[value]]...]
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyevstatic const char *
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyevfind_bootprop(const char *str, const char *bprop)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev{
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    const char *s;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    size_t bplen, len;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    assert(str);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    assert(bprop);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    bplen = strlen(bprop);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    s = str;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    while ((str = strstr(s, " -B")) != NULL ||
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        (str = strstr(s, "\t-B")) != NULL) {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        s = str + 3;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        len = strspn(s, " \t");
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        /* empty -B option, skip it */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        if (len != 0 && s[len] == '-')
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            continue;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        s += len;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        do {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            len = strcspn(s, "= \t");
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            if (s[len] !=  '=')
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                break;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            /* boot property we are looking for? */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            if (len == bplen && strncmp(s, bprop, bplen) == 0)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                return (s);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            s += len;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            /* skip boot property value */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            while ((s = strpbrk(s + 1, "\"\', \t")) != NULL) {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                /* skip quoted */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                if (s[0] == '\"' || s[0] == '\'') {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                    if ((s = strchr(s + 1, s[0])) == NULL) {
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                        /* unbalanced quotes */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                        return (s);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                    }
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                }
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                else
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                    break;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            }
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            /* no more boot properties */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            if (s == NULL)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                return (s);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            /* no more boot properties in that -B block */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            if (s[0] != ',')
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev                break;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            s += strspn(s, ",");
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        } while (s[0] != ' ' && s[0] != '\t');
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    }
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    return (NULL);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev}
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev/*
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev * Add bootpath property to str if
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev *  1. zfs-bootfs property is set explicitly
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev * and
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev *  2. bootpath property is not set
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyevstatic int
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyevupdate_bootpath(char *str, size_t strsz, const char *bootpath)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev{
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    size_t n;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    char *buf;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    const char *bfs;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    /* zfs-bootfs is not specified, or bootpath is allready set */
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    if ((bfs = find_bootprop(str, BPROP_ZFSBOOTFS)) == NULL ||
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        find_bootprop(str, BPROP_BOOTPATH) != NULL)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        return (0);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    n = bfs - str;
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    buf = alloca(strsz);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    bcopy(str, buf, n);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    if (snprintf(buf + n, strsz - n, BPROP_BOOTPATH "=\"%s\",%s",
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        bootpath, bfs) >= strsz - n)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        return (E2BIG);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    bcopy(buf, str, strsz);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    return (0);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev}
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic int
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorematch_bootfs(zfs_handle_t *zfh, void *data)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int     ret;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    const char  *zfn;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    grub_barg_t *barg = (grub_barg_t *)data;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    ret = (zfs_get_type(zfh) == ZFS_TYPE_FILESYSTEM &&
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (zfn = zfs_get_name(zfh)) != NULL &&
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        strcmp(barg->gb_root.gr_fs[GRBM_ZFS_BOOTFS].gfs_dev, zfn) == 0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (ret != 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        barg->gb_walkret = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    else
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (void) zfs_iter_filesystems(zfh, match_bootfs, barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    zfs_close(zfh);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (barg->gb_walkret == 0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorestatic void
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorereset_root(grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    (void) memset(&barg->gb_root, 0, sizeof (barg->gb_root));
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_bootsign[0] = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_kernel[0] = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    RESET_MODULE(barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/* ARGSUSED */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreskip_line(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore/* ARGSUSED */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreerror_line(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
fda6624021ffe01adf1af44f72ae4fb3ba65c1e8Konstantin Ananyev    if (lp->gl_cmdtp == GRBM_ROOT_CMD)
fda6624021ffe01adf1af44f72ae4fb3ba65c1e8Konstantin Ananyev        return (EG_ROOTNOTSUPP);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (EG_INVALIDLINE);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorekernel(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    RESET_MODULE(barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(barg->gb_kernel, lp->gl_arg, sizeof (barg->gb_kernel)) >=
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sizeof (barg->gb_kernel))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooremodule(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(barg->gb_module, lp->gl_arg, sizeof (barg->gb_module)) >=
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sizeof (barg->gb_module))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooredollar_kernel(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int ret;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    size_t  bfslen, isalen;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char    isadir[32];
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char    bootfs[BOOTARGS_MAX];
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    RESET_MODULE(barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(barg->gb_kernel, lp->gl_arg, sizeof (barg->gb_kernel)) >=
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sizeof (barg->gb_kernel))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    bfslen = barg_bootfs_var(barg, bootfs, sizeof (bootfs));
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    isalen = barg_isadir_var(isadir, sizeof (isadir));
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (bfslen >= sizeof (bootfs) || isalen >= sizeof (isadir))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (EINVAL);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if ((ret = expand_var(barg->gb_kernel, sizeof (barg->gb_kernel),
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ZFS_BOOT_VAR, strlen(ZFS_BOOT_VAR), bootfs, bfslen)) != 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    if ((ret = expand_var(barg->gb_kernel, sizeof (barg->gb_kernel),
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        ISADIR_VAR, strlen(ISADIR_VAR), isadir, isalen)) != 0)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        return (ret);
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev    if (strcmp(barg->gb_root.gr_fstyp, MNTTYPE_ZFS) == 0)
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev        ret = update_bootpath(barg->gb_kernel, sizeof (barg->gb_kernel),
c5aaf10a7384f952835ab63586396916a6d3437dKonstantin Ananyev            barg->gb_root.gr_physpath);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooredollar_module(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    int ret;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    size_t  isalen;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char    isadir[32];
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(barg->gb_module, lp->gl_arg, sizeof (barg->gb_module)) >=
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sizeof (barg->gb_module))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if ((isalen = barg_isadir_var(isadir, sizeof (isadir))) >= sizeof
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (isadir))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (EINVAL);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    ret = expand_var(barg->gb_module, sizeof (barg->gb_module),
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ISADIR_VAR, strlen(ISADIR_VAR), isadir, isalen);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (ret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorefindroot(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    size_t sz, bsz;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    const char *sign;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    reset_root(barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    sign = lp->gl_arg;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_prtnum = (uint_t)PRTNUM_INVALID;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_slcnum = (uint_t)SLCNUM_WHOLE_DISK;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (sign[0] == '(') {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        const char *pos;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ++sign;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        if ((pos = strchr(sign, ',')) == NULL || (sz = pos - sign) == 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            return (EG_FINDROOTFMT);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ++pos;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        if (!IS_PRTNUM_VALID(barg->gb_prtnum = pos[0] - '0'))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            return (EG_FINDROOTFMT);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ++pos;
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome        /*
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome         * check the slice only when its presented
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome         */
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome        if (pos[0] != ')') {
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome            if (pos[0] != ',' ||
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome                !IS_SLCNUM_VALID(barg->gb_slcnum = pos[1]) ||
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome                pos[2] != ')')
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome                return (EG_FINDROOTFMT);
57631629e78d7cda75d1f6ec529fc985298b24f4Toomas Soome        }
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    } else {
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        sz = strlen(sign);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    }
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    bsz = strlen(BOOTSIGN_DIR "/");
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (bsz + sz + 1 > sizeof (barg->gb_bootsign))
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    bcopy(BOOTSIGN_DIR "/", barg->gb_bootsign, bsz);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    bcopy(sign, barg->gb_bootsign + bsz, sz);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_bootsign [bsz + sz] = 0;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (grub_find_bootsign(barg));
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Mooreint
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moorebootfs(const grub_line_t *lp, grub_barg_t *barg)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore{
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    zfs_handle_t    *zfh;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    grub_menu_t *mp = barg->gb_entry->ge_menu;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    char        *gfs_devp;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    size_t      gfs_dev_len;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    /* Check if root is zfs */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strcmp(barg->gb_root.gr_fstyp, MNTTYPE_ZFS) != 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (EG_NOTZFS);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    gfs_devp = barg->gb_root.gr_fs[GRBM_ZFS_BOOTFS].gfs_dev;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    gfs_dev_len = sizeof (barg->gb_root.gr_fs[GRBM_ZFS_BOOTFS].gfs_dev);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    /*
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore     * If the bootfs value is the same as the bootfs for the pool,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore     * do nothing.
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore     */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strcmp(lp->gl_arg, gfs_devp) == 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (0);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (strlcpy(gfs_devp, lp->gl_arg, gfs_dev_len) >= gfs_dev_len)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (E2BIG);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    /* check if specified bootfs belongs to the root pool */
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if ((zfh = zfs_open(mp->gm_fs.gf_lzfh,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        barg->gb_root.gr_fs[GRBM_ZFS_TOPFS].gfs_dev,
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        ZFS_TYPE_FILESYSTEM)) == NULL)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        return (EG_OPENZFS);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    barg->gb_walkret = EG_UNKBOOTFS;
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    (void) zfs_iter_filesystems(zfh, match_bootfs, barg);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    zfs_close(zfh);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    if (barg->gb_walkret == 0)
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore        (void) grub_fsd_get_mountp(barg->gb_root.gr_fs +
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore            GRBM_ZFS_BOOTFS, MNTTYPE_ZFS);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore    return (barg->gb_walkret);
753a6d457b330b1b29b2d3eefcd0831116ce950dSherry Moore}