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Kernel v2.6.24 /fs/isofs/export.c

Filename:/fs/isofs/export.c
Lines Added:30
Lines Deleted:39
Also changed in: (Previous) 2.6.24-rc8  2.6.24-rc7  2.6.24-rc6  2.6.24-rc5  2.6.24-rc4  2.6.24-rc3 
(Following) 2.6.24-git17  2.6.24-git18  2.6.24-git19  2.6.24-git20  2.6.24-git21  2.6.24-git22 

Location
[  2.6.24
  [  fs
    [  isofs
       o  export.c

Patch

diff --git a/fs/isofs/export.c b/fs/isofs/export.c
index 4af856a..29f9753 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,
+const struct export_operations isofs_export_ops = {
    .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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