i) iterate over all mounted filesystems
struct vfsmount {
struct list_head mnt_hash;
...
struct dentry *mnt_root; /* root of the mounted tree */
...
};
for (u = 0; i < HASH_SIZE; u++) {
struct vfsmount *mnt;
list_for_each_entry(mnt, &mount_hashtable[u], mnt_hash) {
struct dentry *root;
root = mnt->mnt_root;
...
}
}
ii) recursively walk the dentries of each tree starting from root dentry
and clear d_name and d_iname
struct dentry {
...
struct qstr d_name;
...
unsigned char d_iname[DNAME_INLINE_LEN]; /* small names */
...
struct list_head d_subdirs; /* our children */
...
};
void walk_dentries(struct dentry *dentry)
{
struct dentry *child;
memset(dentry->d_iname, 0, DNAME_INLINE_LEN);
memset(dentry->d_name.name, 0, dentry->d_name.len);
list_for_each_entry(child, &dentry->d_subdirs, d_u.d_child)
walk_dentries(child);
}
Signed-off-by: Aruna Balakrishnaiah <[email protected]>
---
eppic_scripts/dir_names.c | 78 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 eppic_scripts/dir_names.c
diff --git a/eppic_scripts/dir_names.c b/eppic_scripts/dir_names.c
new file mode 100644
index 0000000..dbe6d00
--- /dev/null
+++ b/eppic_scripts/dir_names.c
@@ -0,0 +1,78 @@
+string
+vfs_opt()
+{
+ return "l";
+}
+
+string
+vfs_usage()
+{
+ return "\n";
+}
+
+static void
+vfs_showusage()
+{
+ printf("usage : vfs %s", vfs_usage());
+}
+
+string
+vfs_help()
+{
+ return "Help";
+}
+
+void
+rm_names(struct dentry *dir)
+{
+ struct list_head *next, *head;
+
+ memset(dir->d_iname, 0, 0x20);
+ memset(dir->d_name.name, 0, 0x20);
+
+ head = (struct list_head *)&(dir->d_subdirs);
+ next = (struct list_head *)dir->d_subdirs.next;
+
+ while (next != head)
+ {
+ struct dentry *child, *off = 0;
+
+ child = (struct dentry *)((unsigned long)next - (unsigned
long)&(off->d_u));
+ rm_names(child);
+ next = child->d_u.d_child.next;
+ }
+
+ return;
+}
+
+int
+vfs()
+{
+ int i;
+ struct list_head *tab;
+
+ tab = (struct list_head *)mount_hashtable;
+
+ for (i = 0; i < 256; i++)
+ {
+ struct list_head *head, *next;
+
+ head = (struct list_head *) (tab + i);
+ next = (struct list_head *) head->next;
+
+ if (!next)
+ continue;
+
+ while (next != head)
+ {
+ struct mount *mntfs;
+ struct dentry *root;
+
+ mntfs = (struct mount *)((unsigned long)next);
+ root = (struct dentry *)mntfs->mnt.mnt_root;
+ rm_names(root);
+ next = mntfs->mnt_hash.next;
+ }
+ }
+ return 1;
+}
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