/**
* Returns the absolute path combining parent and name, assuming that root is at
* the configfs scheduler subsystem entry.
*
* @param parent base config_item
* @param name component to catenate to parent's path
*
* @return pointer to a newly allocated string containing the
* absolute path. The path must be freed with put_path.
*/
static char *get_full_path(struct config_item *parent, const char *name)
{
size_t parent_len = item_path_length(parent);
size_t full_len = parent_len - 1;
char *path;
if (name)
full_len += 1 + strlen(name);
path = kmalloc(full_len + 1, GFP_KERNEL);
if (!path)
return NULL;
fill_item_path(parent, path, parent_len);
if (name) {
path[parent_len - 1] = '/';
strcpy(path + parent_len, name);
} else
path[parent_len - 1] = '\0';
return path;
}
static int configfs_get_target_path(struct config_item * item, struct config_item * target,
char *path)
{
char * s;
int depth, size;
depth = item_depth(item);
size = item_path_length(target) + depth * 3 - 1;
if (size > PATH_MAX)
return -ENAMETOOLONG;
pr_debug("%s: depth = %d, size = %d\n", __func__, depth, size);
for (s = path; depth--; s += 3)
strcpy(s,"../");
fill_item_path(target, path, size);
pr_debug("%s: path = '%s'\n", __func__, path);
return 0;
}
