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/* * 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 */ __uint16_t totsize; /* total bytes in shortform list */ __uint8_t 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 */ \ (INT_GET(((xfs_attr_shortform_t *) \ ((dp)->i_afp->if_u1.if_data))->hdr.totsize, ARCH_CONVERT)) #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__ */