diff options
Diffstat (limited to 'usr/src/uts/common/fs/zfs/sys')
| -rw-r--r-- | usr/src/uts/common/fs/zfs/sys/vdev.h | 4 | ||||
| -rw-r--r-- | usr/src/uts/common/fs/zfs/sys/vdev_impl.h | 36 | ||||
| -rw-r--r-- | usr/src/uts/common/fs/zfs/sys/zfs_bootenv.h | 52 |
3 files changed, 87 insertions, 5 deletions
diff --git a/usr/src/uts/common/fs/zfs/sys/vdev.h b/usr/src/uts/common/fs/zfs/sys/vdev.h index b8c2ee5c9e..b839ed2359 100644 --- a/usr/src/uts/common/fs/zfs/sys/vdev.h +++ b/usr/src/uts/common/fs/zfs/sys/vdev.h @@ -21,7 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011, 2017 by Delphix. All rights reserved. + * Copyright (c) 2011, 2020 by Delphix. All rights reserved. * Copyright (c) 2017, Intel Corporation. * Copyright (c) 2019, Datto Inc. All rights reserved. */ @@ -180,6 +180,8 @@ extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv); extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t offset, uint64_t size, zio_done_func_t *done, void *private, int flags); +extern int vdev_label_read_bootenv(vdev_t *, nvlist_t *); +extern int vdev_label_write_bootenv(vdev_t *, nvlist_t *); typedef enum { VDEV_LABEL_CREATE, /* create/add a new device */ diff --git a/usr/src/uts/common/fs/zfs/sys/vdev_impl.h b/usr/src/uts/common/fs/zfs/sys/vdev_impl.h index fc0f90c8c9..4e42247345 100644 --- a/usr/src/uts/common/fs/zfs/sys/vdev_impl.h +++ b/usr/src/uts/common/fs/zfs/sys/vdev_impl.h @@ -20,8 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011, 2018 by Delphix. All rights reserved. - * Copyright (c) 2011, 2019 by Delphix. All rights reserved. + * Copyright (c) 2011, 2020 by Delphix. All rights reserved. * Copyright (c) 2017, Intel Corporation. * Copyright 2019 Joyent, Inc. * Copyright 2020 Joshua M. Clulow <josh@sysmgr.org> @@ -412,7 +411,7 @@ struct vdev { #define VDEV_RAIDZ_MAXPARITY 3 #define VDEV_PAD_SIZE (8 << 10) -/* 2 padding areas (vl_pad1 and vl_pad2) to skip */ +/* 2 padding areas (vl_pad1 and vl_be) to skip */ #define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2 #define VDEV_PHYS_SIZE (112 << 10) #define VDEV_UBERBLOCK_RING (128 << 10) @@ -439,9 +438,38 @@ typedef struct vdev_phys { zio_eck_t vp_zbt; } vdev_phys_t; +typedef enum vbe_vers { + /* + * The bootenv file is stored as ascii text in the envblock. + * It is used by the GRUB bootloader used on Linux to store the + * contents of the grubenv file. The file is stored as raw ASCII, + * and is protected by an embedded checksum. By default, GRUB will + * check if the boot filesystem supports storing the environment data + * in a special location, and if so, will invoke filesystem specific + * logic to retrieve it. This can be overriden by a variable, should + * the user so desire. + */ + VB_RAW = 0, + + /* + * The bootenv file is converted to an nvlist and then packed into the + * envblock. + */ + VB_NVLIST = 1 +} vbe_vers_t; + +typedef struct vdev_boot_envblock { + uint64_t vbe_version; + char vbe_bootenv[VDEV_PAD_SIZE - sizeof (uint64_t) - + sizeof (zio_eck_t)]; + zio_eck_t vbe_zbt; +} vdev_boot_envblock_t; + +CTASSERT(sizeof (vdev_boot_envblock_t) == VDEV_PAD_SIZE); + typedef struct vdev_label { char vl_pad1[VDEV_PAD_SIZE]; /* 8K */ - char vl_pad2[VDEV_PAD_SIZE]; /* 8K */ + vdev_boot_envblock_t vl_be; /* 8K */ vdev_phys_t vl_vdev_phys; /* 112K */ char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */ } vdev_label_t; /* 256K total */ diff --git a/usr/src/uts/common/fs/zfs/sys/zfs_bootenv.h b/usr/src/uts/common/fs/zfs/sys/zfs_bootenv.h new file mode 100644 index 0000000000..703a1c8fa6 --- /dev/null +++ b/usr/src/uts/common/fs/zfs/sys/zfs_bootenv.h @@ -0,0 +1,52 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2020 Toomas Soome <tsoome@me.com> + */ + +#ifndef _ZFS_BOOTENV_H +#define _ZFS_BOOTENV_H + +/* + * Define macros for label bootenv nvlist pair keys. + */ + +#ifdef __cplusplus +extern "C" { +#endif + +#define BOOTENV_VERSION "version" + +#define BE_ILLUMOS_VENDOR "illumos" +#define BE_FREEBSD_VENDOR "freebsd" +#define BE_GRUB_VENDOR "grub" + +#define BOOTENV_OS BE_ILLUMOS_VENDOR + +#define GRUB_ENVMAP BE_GRUB_VENDOR ":" "envmap" + +#define FREEBSD_BOOTONCE BE_FREEBSD_VENDOR ":" "bootonce" +#define FREEBSD_BOOTONCE_USED BE_FREEBSD_VENDOR ":" "bootonce-used" +#define ILLUMOS_BOOTONCE BE_ILLUMOS_VENDOR ":" "bootonce" +#define ILLUMOS_BOOTONCE_USED BE_ILLUMOS_VENDOR ":" "bootonce-used" +#define FREEBSD_NVSTORE BE_FREEBSD_VENDOR ":" "nvstore" +#define ILLUMOS_NVSTORE BE_ILLUMOS_VENDOR ":" "nvstore" + +#define OS_BOOTONCE BOOTENV_OS ":" "bootonce" +#define OS_BOOTONCE_USED BOOTENV_OS ":" "bootonce-used" +#define OS_NVSTORE BOOTENV_OS ":" "nvstore" + +#ifdef __cplusplus +} +#endif + +#endif /* _ZFS_BOOTENV_H */ |