static void xfs_dir2_sf_toino8(xfs_da_args_t *args);
#endif /* XFS_BIG_INUMS */
+
+/*
+ * Inode numbers in short-form directories can come in two versions,
+ * either 4 bytes or 8 bytes wide. These helpers deal with the
+ * two forms transparently by looking at the headers i8count field.
+ */
+static xfs_ino_t
+xfs_dir2_sf_get_ino(
+ struct xfs_dir2_sf *sfp,
+ xfs_dir2_inou_t *from)
+{
+ if (sfp->hdr.i8count)
+ return XFS_GET_DIR_INO8(from->i8);
+ else
+ return XFS_GET_DIR_INO4(from->i4);
+}
+
+static void
+xfs_dir2_sf_put_ino(
+ struct xfs_dir2_sf *sfp,
+ xfs_dir2_inou_t *to,
+ xfs_ino_t ino)
+{
+ if (sfp->hdr.i8count)
+ XFS_PUT_DIR_INO8(ino, to->i8);
+ else
+ XFS_PUT_DIR_INO4(ino, to->i4);
+}
+
+xfs_ino_t
+xfs_dir2_sf_get_parent_ino(
+ struct xfs_dir2_sf *sfp)
+{
+ return xfs_dir2_sf_get_ino(sfp, &sfp->hdr.parent);
+}
+
+static void
+xfs_dir2_sf_put_parent_ino(
+ struct xfs_dir2_sf *sfp,
+ xfs_ino_t ino)
+{
+ xfs_dir2_sf_put_ino(sfp, &sfp->hdr.parent, ino);
+}
+
+/*
+ * In short-form directory entries the inode numbers are stored at variable
+ * offset behind the entry name. The inode numbers may only be accessed
+ * through the helpers below.
+ */
+static xfs_dir2_inou_t *
+xfs_dir2_sfe_inop(
+ struct xfs_dir2_sf_entry *sfep)
+{
+ return (xfs_dir2_inou_t *)&sfep->name[sfep->namelen];
+}
+
+xfs_ino_t
+xfs_dir2_sfe_get_ino(
+ struct xfs_dir2_sf *sfp,
+ struct xfs_dir2_sf_entry *sfep)
+{
+ return xfs_dir2_sf_get_ino(sfp, xfs_dir2_sfe_inop(sfep));
+}
+
+static void
+xfs_dir2_sfe_put_ino(
+ struct xfs_dir2_sf *sfp,
+ struct xfs_dir2_sf_entry *sfep,
+ xfs_ino_t ino)
+{
+ xfs_dir2_sf_put_ino(sfp, xfs_dir2_sfe_inop(sfep), ino);
+}
+
/*
* Given a block directory (dp/block), calculate its size as a shortform (sf)
* directory and a header for the sf directory, if it will fit it the
*/
sfhp->count = count;
sfhp->i8count = i8count;
- xfs_dir2_sf_put_inumber((xfs_dir2_sf_t *)sfhp, &parent, &sfhp->parent);
+ xfs_dir2_sf_put_parent_ino((xfs_dir2_sf_t *)sfhp, parent);
return size;
}
char *ptr; /* current data pointer */
xfs_dir2_sf_entry_t *sfep; /* shortform entry */
xfs_dir2_sf_t *sfp; /* shortform structure */
- xfs_ino_t temp;
trace_xfs_dir2_block_to_sf(args);
else if (dep->namelen == 2 &&
dep->name[0] == '.' && dep->name[1] == '.')
ASSERT(be64_to_cpu(dep->inumber) ==
- xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent));
+ xfs_dir2_sf_get_parent_ino(sfp));
/*
* Normal entry, copy it into shortform.
*/
(xfs_dir2_data_aoff_t)
((char *)dep - (char *)block));
memcpy(sfep->name, dep->name, dep->namelen);
- temp = be64_to_cpu(dep->inumber);
- xfs_dir2_sf_put_inumber(sfp, &temp,
- xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep,
+ be64_to_cpu(dep->inumber));
+
sfep = xfs_dir2_sf_nextentry(sfp, sfep);
}
ptr += xfs_dir2_data_entsize(dep->namelen);
sfep->namelen = args->namelen;
xfs_dir2_sf_put_offset(sfep, offset);
memcpy(sfep->name, args->name, sfep->namelen);
- xfs_dir2_sf_put_inumber(sfp, &args->inumber,
- xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber);
/*
* Update the header and inode.
*/
sfep->namelen = args->namelen;
xfs_dir2_sf_put_offset(sfep, offset);
memcpy(sfep->name, args->name, sfep->namelen);
- xfs_dir2_sf_put_inumber(sfp, &args->inumber,
- xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber);
sfp->hdr.count++;
#if XFS_BIG_INUMS
if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange)
sfp = (xfs_dir2_sf_t *)dp->i_df.if_u1.if_data;
offset = XFS_DIR2_DATA_FIRST_OFFSET;
- ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent);
+ ino = xfs_dir2_sf_get_parent_ino(sfp);
i8count = ino > XFS_DIR2_MAX_SHORT_INUM;
for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp);
i < sfp->hdr.count;
i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) {
ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset);
- ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep));
+ ino = xfs_dir2_sfe_get_ino(sfp, sfep);
i8count += ino > XFS_DIR2_MAX_SHORT_INUM;
offset =
xfs_dir2_sf_get_offset(sfep) +
/*
* Now can put in the inode number, since i8count is set.
*/
- xfs_dir2_sf_put_inumber(sfp, &pino, &sfp->hdr.parent);
+ xfs_dir2_sf_put_parent_ino(sfp, pino);
sfp->hdr.count = 0;
dp->i_d.di_size = size;
xfs_dir2_sf_check(args);
* Put .. entry unless we're starting past it.
*/
if (*offset <= dotdot_offset) {
- ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent);
+ ino = xfs_dir2_sf_get_parent_ino(sfp);
if (filldir(dirent, "..", 2, dotdot_offset & 0x7fffffff, ino, DT_DIR)) {
*offset = dotdot_offset & 0x7fffffff;
return 0;
continue;
}
- ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep));
+ ino = xfs_dir2_sfe_get_ino(sfp, sfep);
if (filldir(dirent, (char *)sfep->name, sfep->namelen,
off & 0x7fffffff, ino, DT_UNKNOWN)) {
*offset = off & 0x7fffffff;
*/
if (args->namelen == 2 &&
args->name[0] == '.' && args->name[1] == '.') {
- args->inumber = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent);
+ args->inumber = xfs_dir2_sf_get_parent_ino(sfp);
args->cmpresult = XFS_CMP_EXACT;
return XFS_ERROR(EEXIST);
}
sfep->namelen);
if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
args->cmpresult = cmp;
- args->inumber = xfs_dir2_sf_get_inumber(sfp,
- xfs_dir2_sf_inumberp(sfep));
+ args->inumber = xfs_dir2_sfe_get_ino(sfp, sfep);
if (cmp == XFS_CMP_EXACT)
return XFS_ERROR(EEXIST);
ci_sfep = sfep;
i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) {
if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
XFS_CMP_EXACT) {
- ASSERT(xfs_dir2_sf_get_inumber(sfp,
- xfs_dir2_sf_inumberp(sfep)) ==
- args->inumber);
+ ASSERT(xfs_dir2_sfe_get_ino(sfp, sfep) ==
+ args->inumber);
break;
}
}
if (args->namelen == 2 &&
args->name[0] == '.' && args->name[1] == '.') {
#if XFS_BIG_INUMS || defined(DEBUG)
- ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent);
+ ino = xfs_dir2_sf_get_parent_ino(sfp);
ASSERT(args->inumber != ino);
#endif
- xfs_dir2_sf_put_inumber(sfp, &args->inumber, &sfp->hdr.parent);
+ xfs_dir2_sf_put_parent_ino(sfp, args->inumber);
}
/*
* Normal entry, look for the name.
if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
XFS_CMP_EXACT) {
#if XFS_BIG_INUMS || defined(DEBUG)
- ino = xfs_dir2_sf_get_inumber(sfp,
- xfs_dir2_sf_inumberp(sfep));
+ ino = xfs_dir2_sfe_get_ino(sfp, sfep);
ASSERT(args->inumber != ino);
#endif
- xfs_dir2_sf_put_inumber(sfp, &args->inumber,
- xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber);
break;
}
}
char *buf; /* old dir's buffer */
xfs_inode_t *dp; /* incore directory inode */
int i; /* entry index */
- xfs_ino_t ino; /* entry inode number */
int newsize; /* new inode size */
xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */
xfs_dir2_sf_t *oldsfp; /* old sf directory */
*/
sfp->hdr.count = oldsfp->hdr.count;
sfp->hdr.i8count = 0;
- ino = xfs_dir2_sf_get_inumber(oldsfp, &oldsfp->hdr.parent);
- xfs_dir2_sf_put_inumber(sfp, &ino, &sfp->hdr.parent);
+ xfs_dir2_sf_put_parent_ino(sfp, xfs_dir2_sf_get_parent_ino(oldsfp));
/*
* Copy the entries field by field.
*/
sfep->namelen = oldsfep->namelen;
sfep->offset = oldsfep->offset;
memcpy(sfep->name, oldsfep->name, sfep->namelen);
- ino = xfs_dir2_sf_get_inumber(oldsfp,
- xfs_dir2_sf_inumberp(oldsfep));
- xfs_dir2_sf_put_inumber(sfp, &ino, xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep,
+ xfs_dir2_sfe_get_ino(oldsfp, oldsfep));
}
/*
* Clean up the inode.
char *buf; /* old dir's buffer */
xfs_inode_t *dp; /* incore directory inode */
int i; /* entry index */
- xfs_ino_t ino; /* entry inode number */
int newsize; /* new inode size */
xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */
xfs_dir2_sf_t *oldsfp; /* old sf directory */
*/
sfp->hdr.count = oldsfp->hdr.count;
sfp->hdr.i8count = 1;
- ino = xfs_dir2_sf_get_inumber(oldsfp, &oldsfp->hdr.parent);
- xfs_dir2_sf_put_inumber(sfp, &ino, &sfp->hdr.parent);
+ xfs_dir2_sf_put_parent_ino(sfp, xfs_dir2_sf_get_parent_ino(oldsfp));
/*
* Copy the entries field by field.
*/
sfep->namelen = oldsfep->namelen;
sfep->offset = oldsfep->offset;
memcpy(sfep->name, oldsfep->name, sfep->namelen);
- ino = xfs_dir2_sf_get_inumber(oldsfp,
- xfs_dir2_sf_inumberp(oldsfep));
- xfs_dir2_sf_put_inumber(sfp, &ino, xfs_dir2_sf_inumberp(sfep));
+ xfs_dir2_sfe_put_ino(sfp, sfep,
+ xfs_dir2_sfe_get_ino(oldsfp, oldsfep));
}
/*
* Clean up the inode.
projects / deliverable / linux.git / blobdiff