/**
* initialize the dot(.) and dotdot(..) dir entries for new directory
* @param inode inode for itself
* @return return 0 on success, EIO on failure
*
* inode must have start cluster of itself and start cluster of parent dir
*/
int init_new_dir(struct inode *inode)
{
struct buffer_head *bh = NULL;
struct rfs_dir_entry *dot_ep = NULL;
struct rfs_dir_entry *dotdot_ep = NULL;
unsigned char dummy = 0;
int err = 0;
/* initialize .(itself) and ..(parent) */
dot_ep = get_entry(inode, 0, &bh);
if (IS_ERR(dot_ep)) {
brelse(bh);
return -EIO;
}
dotdot_ep = (struct rfs_dir_entry *) (bh->b_data + DENTRY_SIZE);
init_dir_entry(inode, dot_ep, TYPE_DIR,
RFS_I(inode)->start_clu, DOT, &dummy);
init_dir_entry(inode, dotdot_ep, TYPE_DIR,
RFS_I(inode)->p_start_clu, DOTDOT, &dummy);
rfs_mark_buffer_dirty(bh, inode->i_sb);
brelse(bh);
return err;
}
//check for file in cache, if found size will be updated, if not found
//and this is a dir, a new dir cache entry is created
void update_dir_cache(const char* path, off_t size, int isdir, int islink)
{
debugf(DBG_LEVEL_EXTALL, KCYN "update_dir_cache(%s)", path);
pthread_mutex_lock(&dcachemut);
dir_cache* cw;
dir_entry* de;
char dir[MAX_PATH_SIZE];
dir_for(path, dir);
for (cw = dcache; cw; cw = cw->next)
{
if (!strcmp(cw->path, dir))
{
for (de = cw->entries; de; de = de->next)
{
if (!strcmp(de->full_name, path))
{
de->size = size;
pthread_mutex_unlock(&dcachemut);
debugf(DBG_LEVEL_EXTALL, "exit 0: update_dir_cache(%s)", path);
return;
}
}
de = init_dir_entry();
de->size = size;
de->isdir = isdir;
de->islink = islink;
de->name = strdup(&path[strlen(cw->path) + 1]);
de->full_name = strdup(path);
//fixed: the conditions below were mixed up dir -> link?
if (islink)
de->content_type = strdup("application/link");
if (isdir)
de->content_type = strdup("application/directory");
else
de->content_type = strdup("application/octet-stream");
de->next = cw->entries;
cw->entries = de;
if (isdir)
new_cache(path);
break;
}
}
debugf(DBG_LEVEL_EXTALL, "exit 1: update_dir_cache(%s)", path);
pthread_mutex_unlock(&dcachemut);
}
