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author | Dave Chinner <dchinner@redhat.com> | 2014-06-25 14:57:36 +1000 |
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committer | Dave Chinner <david@fromorbit.com> | 2014-06-25 14:57:36 +1000 |
commit | 84be0ffc9043f7c56044294eb775a2200452c76d (patch) | |
tree | f92ae3d2a8ddfc0c98c76c434432f42b7c14ac0d /fs/xfs/libxfs/xfs_attr_sf.h | |
parent | 69116a1317ce3d2292e062bfb1a22757b95dcd06 (diff) | |
download | linux-84be0ffc9043f7c56044294eb775a2200452c76d.tar.bz2 |
libxfs: move header files
Move all the header files that are shared with userspace into
libxfs. This is done as one big chunk simpy to get it done quickly.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_attr_sf.h')
-rw-r--r-- | fs/xfs/libxfs/xfs_attr_sf.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_attr_sf.h b/fs/xfs/libxfs/xfs_attr_sf.h new file mode 100644 index 000000000000..919756e3ba53 --- /dev/null +++ b/fs/xfs/libxfs/xfs_attr_sf.h @@ -0,0 +1,70 @@ +/* + * 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. + */ + +/* + * 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 */ + unsigned 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)) + +#endif /* __XFS_ATTR_SF_H__ */ |