Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / xfs / libxfs / xfs_attr_sf.h

diff --git a/kernel/fs/xfs/libxfs/xfs_attr_sf.h b/kernel/fs/xfs/libxfs/xfs_attr_sf.h
new file mode 100644 (file)
index 0000000..919756e
--- /dev/null
+++ b/kernel/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__ */