diff options
Diffstat (limited to 'sys/geom/concat/g_concat.h')
| -rw-r--r-- | sys/geom/concat/g_concat.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sys/geom/concat/g_concat.h b/sys/geom/concat/g_concat.h new file mode 100644 index 0000000..e073ccc --- /dev/null +++ b/sys/geom/concat/g_concat.h @@ -0,0 +1,113 @@ +/*- + * Copyright (c) 2003 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _G_CONCAT_H_ +#define _G_CONCAT_H_ + +#include <sys/endian.h> + +#define G_CONCAT_CLASS_NAME "CONCAT" + +#define G_CONCAT_MAGIC "GEOM::CONCAT" +#define G_CONCAT_VERSION 0 + +#ifdef _KERNEL +#define G_CONCAT_TYPE_MANUAL 0 +#define G_CONCAT_TYPE_AUTOMATIC 1 + +#define G_CONCAT_DEBUG(lvl, ...) do { \ + if (g_concat_debug >= (lvl)) { \ + printf("GEOM_CONCAT[%u]: ", lvl); \ + printf(__VA_ARGS__); \ + printf("\n"); \ + } \ +} while (0) +#define G_CONCAT_LOGREQ(bp, ...) do { \ + if (g_concat_debug >= 2) { \ + printf("GEOM_CONCAT[2]: "); \ + printf(__VA_ARGS__); \ + g_print_bio(bp); \ + printf("\n"); \ + } \ +} while (0) + +extern struct sysctl_oid_list sysctl__kern_geom_children; + +struct g_concat_disk { + struct g_consumer *d_consumer; + struct g_concat_softc *d_softc; + off_t d_start; + off_t d_end; + off_t d_length; + boolean_t d_valid; + LIST_ENTRY(g_concat_path) d_next; +}; + +struct g_concat_softc { + int sc_flags; /* flags */ + u_int sc_type; /* provider type */ + struct g_provider *sc_provider; + char sc_name[16]; /* concat name */ + uint32_t sc_id; /* concat unique ID */ + + struct g_concat_disk *sc_disks; + uint16_t sc_ndisks; +}; +#endif /* _KERNEL */ + +struct g_concat_metadata { + char md_magic[16]; /* Magic value. */ + uint32_t md_version; /* Version number. */ + char md_name[16]; /* Concat name. */ + uint32_t md_id; /* Unique ID. */ + uint16_t md_no; /* Disk number. */ + uint16_t md_all; /* Number of all disks. */ +}; +static __inline void +concat_metadata_encode(const struct g_concat_metadata *md, u_char *data) +{ + + bcopy(md->md_magic, data, sizeof(md->md_magic)); + le32enc(data + 16, md->md_version); + bcopy(md->md_name, data + 20, sizeof(md->md_name)); + le32enc(data + 36, md->md_id); + le16enc(data + 40, md->md_no); + le16enc(data + 42, md->md_all); +} +static __inline void +concat_metadata_decode(const u_char *data, struct g_concat_metadata *md) +{ + + bcopy(data, md->md_magic, sizeof(md->md_magic)); + md->md_version = le32dec(data + 16); + bcopy(data + 20, md->md_name, sizeof(md->md_name)); + md->md_id = le32dec(data + 36); + md->md_no = le16dec(data + 40); + md->md_all = le16dec(data + 42); +} +#endif /* _G_CONCAT_H_ */ |
