mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
3b244aa81e
SGI-PV: 943272 SGI-Modid: xfs-linux-melb:xfs-kern:25501a Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nathan Scott <nathans@sgi.com>
115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
/*
|
|
* Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_ATTR_SF_H__
|
|
#define __XFS_ATTR_SF_H__
|
|
|
|
/*
|
|
* Attribute storage when stored inside the inode.
|
|
*
|
|
* Small attribute lists are packed as tightly as possible so as
|
|
* to fit into the literal area of the inode.
|
|
*/
|
|
|
|
struct xfs_inode;
|
|
|
|
/*
|
|
* Entries are packed toward the top as tight as possible.
|
|
*/
|
|
typedef struct xfs_attr_shortform {
|
|
struct xfs_attr_sf_hdr { /* constant-structure header block */
|
|
__be16 totsize; /* total bytes in shortform list */
|
|
__u8 count; /* count of active entries */
|
|
} hdr;
|
|
struct xfs_attr_sf_entry {
|
|
__uint8_t namelen; /* actual length of name (no NULL) */
|
|
__uint8_t valuelen; /* actual length of value (no NULL) */
|
|
__uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
|
|
__uint8_t nameval[1]; /* name & value bytes concatenated */
|
|
} list[1]; /* variable sized array */
|
|
} xfs_attr_shortform_t;
|
|
typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t;
|
|
typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_t;
|
|
|
|
/*
|
|
* We generate this then sort it, attr_list() must return things in hash-order.
|
|
*/
|
|
typedef struct xfs_attr_sf_sort {
|
|
__uint8_t entno; /* entry number in original list */
|
|
__uint8_t namelen; /* length of name value (no null) */
|
|
__uint8_t valuelen; /* length of value */
|
|
__uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
|
|
xfs_dahash_t hash; /* this entry's hash value */
|
|
char *name; /* name value, pointer into buffer */
|
|
} xfs_attr_sf_sort_t;
|
|
|
|
#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \
|
|
(((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
|
|
#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
|
|
((1 << (NBBY*(int)sizeof(__uint8_t))) - 1)
|
|
#define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \
|
|
((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
|
|
#define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
|
|
((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
|
|
#define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \
|
|
(be16_to_cpu(((xfs_attr_shortform_t *) \
|
|
((dp)->i_afp->if_u1.if_data))->hdr.totsize))
|
|
|
|
#if defined(XFS_ATTR_TRACE)
|
|
/*
|
|
* Kernel tracing support for attribute lists
|
|
*/
|
|
struct xfs_attr_list_context;
|
|
struct xfs_da_intnode;
|
|
struct xfs_da_node_entry;
|
|
struct xfs_attr_leafblock;
|
|
|
|
#define XFS_ATTR_TRACE_SIZE 4096 /* size of global trace buffer */
|
|
extern ktrace_t *xfs_attr_trace_buf;
|
|
|
|
/*
|
|
* Trace record types.
|
|
*/
|
|
#define XFS_ATTR_KTRACE_L_C 1 /* context */
|
|
#define XFS_ATTR_KTRACE_L_CN 2 /* context, node */
|
|
#define XFS_ATTR_KTRACE_L_CB 3 /* context, btree */
|
|
#define XFS_ATTR_KTRACE_L_CL 4 /* context, leaf */
|
|
|
|
void xfs_attr_trace_l_c(char *where, struct xfs_attr_list_context *context);
|
|
void xfs_attr_trace_l_cn(char *where, struct xfs_attr_list_context *context,
|
|
struct xfs_da_intnode *node);
|
|
void xfs_attr_trace_l_cb(char *where, struct xfs_attr_list_context *context,
|
|
struct xfs_da_node_entry *btree);
|
|
void xfs_attr_trace_l_cl(char *where, struct xfs_attr_list_context *context,
|
|
struct xfs_attr_leafblock *leaf);
|
|
void xfs_attr_trace_enter(int type, char *where,
|
|
__psunsigned_t a2, __psunsigned_t a3,
|
|
__psunsigned_t a4, __psunsigned_t a5,
|
|
__psunsigned_t a6, __psunsigned_t a7,
|
|
__psunsigned_t a8, __psunsigned_t a9,
|
|
__psunsigned_t a10, __psunsigned_t a11,
|
|
__psunsigned_t a12, __psunsigned_t a13,
|
|
__psunsigned_t a14, __psunsigned_t a15);
|
|
#else
|
|
#define xfs_attr_trace_l_c(w,c)
|
|
#define xfs_attr_trace_l_cn(w,c,n)
|
|
#define xfs_attr_trace_l_cb(w,c,b)
|
|
#define xfs_attr_trace_l_cl(w,c,l)
|
|
#endif /* XFS_ATTR_TRACE */
|
|
|
|
#endif /* __XFS_ATTR_SF_H__ */
|