diff options
Diffstat (limited to 'usr/src/uts/common/sys/fs/decomp.h')
| -rw-r--r-- | usr/src/uts/common/sys/fs/decomp.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/fs/decomp.h b/usr/src/uts/common/sys/fs/decomp.h new file mode 100644 index 0000000000..035a5ab6c8 --- /dev/null +++ b/usr/src/uts/common/sys/fs/decomp.h @@ -0,0 +1,78 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _SYS_DECOMP_H +#define _SYS_DECOMP_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#ifdef __cplusplus +extern "C" { +#endif + +#define CH_MAGIC 0x5a636d70 /* Zcmp */ + +#define CH_VERSION 1 + +#define CH_ALG_ZLIB 1 + +struct comphdr { + uint64_t ch_magic; + uint64_t ch_version; + uint64_t ch_algorithm; + uint64_t ch_fsize; + uint64_t ch_blksize; + uint64_t ch_blkmap[1]; +}; + +#define ZMAXBUF(n) ((n) + ((n) / 1000) + 12) + +#ifdef _KERNEL + +struct dcnode { + struct vnode *dc_vp; + struct vnode *dc_subvp; + struct kmem_cache *dc_bufcache; + kmutex_t dc_lock; + struct dcnode *dc_hash; + struct dcnode *dc_lrunext; + struct dcnode *dc_lruprev; + struct comphdr *dc_hdr; + size_t dc_hdrsize; + size_t dc_zmax; + int dc_mapcnt; +}; + +#define VTODC(vp) ((struct dcnode *)(vp)->v_data) +#define DCTOV(dp) ((dp)->dc_vp) + +struct vnode *decompvp(struct vnode *, struct cred *, caller_context_t *); + +#endif + +#ifdef __cplusplus +} +#endif +#endif /* _SYS_DECOMP_H */ |