3728855a0f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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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 THE AUTHORS 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 AUTHORS 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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#ifndef _G_LABEL_H_
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#define _G_LABEL_H_
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#include <sys/endian.h>
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#ifdef _KERNEL
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#include <sys/sysctl.h>
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#endif
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#define G_LABEL_CLASS_NAME "LABEL"
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#define G_LABEL_MAGIC "GEOM::LABEL"
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/*
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* Version history:
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* 1 - Initial version number.
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* 2 - Added md_provsize field to metadata.
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*/
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#define G_LABEL_VERSION 2
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#define G_LABEL_DIR "label"
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#ifdef _KERNEL
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extern u_int g_label_debug;
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#define G_LABEL_DEBUG(lvl, ...) do { \
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if (g_label_debug >= (lvl)) { \
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printf("GEOM_LABEL"); \
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if (g_label_debug > 0) \
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printf("[%u]", lvl); \
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printf(": "); \
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printf(__VA_ARGS__); \
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printf("\n"); \
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} \
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} while (0)
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SYSCTL_DECL(_kern_geom_label);
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#define G_LABEL_INIT(kind, label, descr) \
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SYSCTL_NODE(_kern_geom_label, OID_AUTO, kind, CTLFLAG_RD, \
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NULL, ""); \
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SYSCTL_INT(_kern_geom_label_##kind, OID_AUTO, enable, \
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CTLFLAG_RWTUN, &label.ld_enabled, 1, descr)
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typedef void g_label_taste_t (struct g_consumer *cp, char *label, size_t size);
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struct g_label_desc {
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g_label_taste_t *ld_taste;
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char *ld_dir;
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int ld_enabled;
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};
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/* Supported labels. */
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extern struct g_label_desc g_label_ufs_id;
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extern struct g_label_desc g_label_ufs_volume;
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extern struct g_label_desc g_label_iso9660;
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extern struct g_label_desc g_label_msdosfs;
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extern struct g_label_desc g_label_ext2fs;
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extern struct g_label_desc g_label_reiserfs;
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extern struct g_label_desc g_label_ntfs;
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extern struct g_label_desc g_label_gpt;
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extern struct g_label_desc g_label_gpt_uuid;
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extern struct g_label_desc g_label_disk_ident;
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extern void g_label_rtrim(char *label, size_t size);
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#endif /* _KERNEL */
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struct g_label_metadata {
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char md_magic[16]; /* Magic value. */
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uint32_t md_version; /* Version number. */
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char md_label[16]; /* Label. */
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uint64_t md_provsize; /* Provider's size. */
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};
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static __inline void
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label_metadata_encode(const struct g_label_metadata *md, u_char *data)
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{
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bcopy(md->md_magic, data, sizeof(md->md_magic));
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le32enc(data + 16, md->md_version);
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bcopy(md->md_label, data + 20, sizeof(md->md_label));
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le64enc(data + 36, md->md_provsize);
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}
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static __inline void
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label_metadata_decode(const u_char *data, struct g_label_metadata *md)
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{
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bcopy(data, md->md_magic, sizeof(md->md_magic));
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md->md_version = le32dec(data + 16);
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bcopy(data + 20, md->md_label, sizeof(md->md_label));
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md->md_provsize = le64dec(data + 36);
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}
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#endif /* _G_LABEL_H_ */
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