/**
* Add an XML attribute value to the table.
*
* If the value exisited in the table, the new value replaces the older one
* which is then freed.
*
* Attributes are kept in the order in which they are inserted.
*
* For convenience, the URI may be NULL, in which case the routine behaves
* as if xattr_table_add_local() had been called.
*
* @param xat the XML attribute table
* @param uri the URI namespace of the attribute (copied if non-NULL)
* @param local the local name (copied)
* @param value the attribute value (copied)
*/
bool
xattr_table_add(xattr_table_t *xat,
const char *uri, const char *local, const char *value)
{
struct xattr *xa;
xattr_table_check(xat);
g_assert(local != NULL);
g_assert(value != NULL);
xa = xattr_alloc(uri, local, value);
return xattr_table_insert(xat, xa);
}
/*Not Working Yet*/
static int copyup_xattrs(struct dentry *old_hidden_dentry,
struct dentry *new_hidden_dentry)
{
int err = 0;
ssize_t list_size = -1;
char *name_list = NULL;
char *attr_value = NULL;
char *name_list_orig = NULL;
print_entry_location();
PASSERT(old_hidden_dentry);
PASSERT(old_hidden_dentry->d_inode);
PASSERT(old_hidden_dentry->d_inode->i_op);
PASSERT(new_hidden_dentry);
PASSERT(new_hidden_dentry->d_inode);
PASSERT(new_hidden_dentry->d_inode->i_op);
if (!old_hidden_dentry->d_inode->i_op->getxattr ||
!old_hidden_dentry->d_inode->i_op->listxattr ||
!new_hidden_dentry->d_inode->i_op->setxattr) {
err = -ENOTSUPP;
goto out;
}
list_size =
old_hidden_dentry->d_inode->i_op->listxattr(old_hidden_dentry, NULL,
0);
if (list_size <= 0) {
err = list_size;
goto out;
}
name_list = xattr_alloc(list_size + 1, XATTR_LIST_MAX);
if (!name_list || IS_ERR(name_list)) {
err = PTR_ERR(name_list);
goto out;
}
list_size =
old_hidden_dentry->d_inode->i_op->listxattr(old_hidden_dentry,
name_list, list_size);
attr_value = xattr_alloc(XATTR_SIZE_MAX, XATTR_SIZE_MAX);
if (!attr_value || IS_ERR(attr_value)) {
err = PTR_ERR(name_list);
goto out;
}
name_list_orig = name_list;
while (*name_list) {
ssize_t size;
down(&old_hidden_dentry->d_inode->i_sem);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
err = security_inode_getxattr(old_hidden_dentry, name_list);
if (err)
size = err;
else
#endif
size =
old_hidden_dentry->d_inode->i_op->
getxattr(old_hidden_dentry, name_list, attr_value,
XATTR_SIZE_MAX);
up(&old_hidden_dentry->d_inode->i_sem);
if (size < 0) {
err = size;
goto out;
}
if (size > XATTR_SIZE_MAX) {
err = -E2BIG;
goto out;
}
down(&new_hidden_dentry->d_inode->i_sem);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
err =
security_inode_setxattr(old_hidden_dentry, name_list,
attr_value, size, 0);
if (!err) {
#endif
err =
new_hidden_dentry->d_inode->i_op->
setxattr(new_hidden_dentry, name_list, attr_value,
size, 0);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
if (!err)
security_inode_post_setxattr(old_hidden_dentry,
name_list,
attr_value, size,
0);
}
#endif
up(&new_hidden_dentry->d_inode->i_sem);
if (err < 0)
goto out;
name_list += strlen(name_list) + 1;
}
out:
name_list = name_list_orig;
if (name_list)
xattr_free(name_list, list_size + 1);
if (attr_value)
xattr_free(attr_value, XATTR_SIZE_MAX);
/* It is no big deal if this fails, we just roll with the punches. */
if (err == -ENOTSUPP)
err = 0;
return err;
}
