Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=905251a02eeccc59f8e1d743679b8edadc5f738b
Commit: 905251a02eeccc59f8e1d743679b8edadc5f738b
Parent: 1305edad01d7327393ccecff8b9e976dd35bc55d
Author: Christoph Hellwig <[EMAIL PROTECTED]>
AuthorDate: Sun Oct 21 16:42:12 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Mon Oct 22 08:13:20 2007 -0700
isofs: new export ops
Nice little cleanup by consolidating things a little and using a structure
for
the special file handle format.
Signed-off-by: Christoph Hellwig <[EMAIL PROTECTED]>
Cc: Neil Brown <[EMAIL PROTECTED]>
Cc: "J. Bruce Fields" <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
fs/isofs/export.c | 67 +++++++++++++++++++++++------------------------------
1 files changed, 29 insertions(+), 38 deletions(-)
diff --git a/fs/isofs/export.c b/fs/isofs/export.c
index 4af856a..511c351 100644
--- a/fs/isofs/export.c
+++ b/fs/isofs/export.c
@@ -42,16 +42,6 @@ isofs_export_iget(struct super_block *sb,
return result;
}
-static struct dentry *
-isofs_export_get_dentry(struct super_block *sb, void *vobjp)
-{
- __u32 *objp = vobjp;
- unsigned long block = objp[0];
- unsigned long offset = objp[1];
- __u32 generation = objp[2];
- return isofs_export_iget(sb, block, offset, generation);
-}
-
/* This function is surprisingly simple. The trick is understanding
* that "child" is always a directory. So, to find its parent, you
* simply need to find its ".." entry, normalize its block and offset,
@@ -182,43 +172,44 @@ isofs_export_encode_fh(struct dentry *dentry,
return type;
}
+struct isofs_fid {
+ u32 block;
+ u16 offset;
+ u16 parent_offset;
+ u32 generation;
+ u32 parent_block;
+ u32 parent_generation;
+};
-static struct dentry *
-isofs_export_decode_fh(struct super_block *sb,
- __u32 *fh32,
- int fh_len,
- int fileid_type,
- int (*acceptable)(void *context, struct dentry *de),
- void *context)
+static struct dentry *isofs_fh_to_dentry(struct super_block *sb,
+ struct fid *fid, int fh_len, int fh_type)
{
- __u16 *fh16 = (__u16*)fh32;
- __u32 child[3]; /* The child is what triggered all this. */
- __u32 parent[3]; /* The parent is just along for the ride. */
+ struct isofs_fid *ifid = (struct isofs_fid *)fid;
- if (fh_len < 3 || fileid_type > 2)
+ if (fh_len < 3 || fh_type > 2)
return NULL;
- child[0] = fh32[0];
- child[1] = fh16[2]; /* fh16 [sic] */
- child[2] = fh32[2];
-
- parent[0] = 0;
- parent[1] = 0;
- parent[2] = 0;
- if (fileid_type == 2) {
- if (fh_len > 2) parent[0] = fh32[3];
- parent[1] = fh16[3]; /* fh16 [sic] */
- if (fh_len > 4) parent[2] = fh32[4];
- }
-
- return sb->s_export_op->find_exported_dentry(sb, child, parent,
- acceptable, context);
+ return isofs_export_iget(sb, ifid->block, ifid->offset,
+ ifid->generation);
}
+static struct dentry *isofs_fh_to_parent(struct super_block *sb,
+ struct fid *fid, int fh_len, int fh_type)
+{
+ struct isofs_fid *ifid = (struct isofs_fid *)fid;
+
+ if (fh_type != 2)
+ return NULL;
+
+ return isofs_export_iget(sb,
+ fh_len > 2 ? ifid->parent_block : 0,
+ ifid->parent_offset,
+ fh_len > 4 ? ifid->parent_generation : 0);
+}
struct export_operations isofs_export_ops = {
- .decode_fh = isofs_export_decode_fh,
.encode_fh = isofs_export_encode_fh,
- .get_dentry = isofs_export_get_dentry,
+ .fh_to_dentry = isofs_fh_to_dentry,
+ .fh_to_parent = isofs_fh_to_parent,
.get_parent = isofs_export_get_parent,
};
-
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