Linux kernel commit 38129a13e6e7 ("switch mnt_hash to hlist"),
moves mnt_hash from list_head to hlist_node. Introduce these
list type changes to iterate over the mounted filesystem and
walk dentries.These changes are not compatible with previous kernel versions, so add new dir_names script file for kernel version >= 3.14 to kernel version <= 4.8. Signed-off-by: Kamalesh Babulal <[email protected]> Cc: Atsushi Kumagai <[email protected]> --- eppic_scripts/dir_names_3_14_to_4_8.c | 82 +++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 eppic_scripts/dir_names_3_14_to_4_8.c diff --git a/eppic_scripts/dir_names_3_14_to_4_8.c b/eppic_scripts/dir_names_3_14_to_4_8.c new file mode 100644 index 0000000..5bf08fe --- /dev/null +++ b/eppic_scripts/dir_names_3_14_to_4_8.c @@ -0,0 +1,82 @@ +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; + unsigned int hash_len; + int i; + + memset(dir->d_iname, 0, 0x20); + hash_len = *((unsigned int *)&dir->d_name); + memset(dir->d_name.name, 0, hash_len); + + 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_child)); + rm_names(child); + next = child->d_child.next; + } + + return; +} + +int +vfs() +{ + int i; + struct hlist_bl_head *tab; + unsigned int d_hash_size = d_hash_mask; + + tab = (struct hlist_bl_head *)dentry_hashtable; + + for (i = 0; i < d_hash_size; i++) + { + struct hlist_bl_head *head; + struct hlist_bl_node *head_node, *next; + + head = (struct hlist_bl_head *) (tab + i); + head_node = head->first; + if (!head_node) + continue; + + next = head_node; + + while (next) + { + struct dentry *root, *off = 0; + + root = (struct dentry *)((unsigned long)next - (unsigned long)&(off->d_hash)); + rm_names(root); + next = next->next; + } + } + return 1; +} -- 2.7.4 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
