84 	if (iname->len <= 0 || iname->len > lim)  in f2fs_fname_encrypt()
87 	ciphertext_len = (iname->len < F2FS_CRYPTO_BLOCK_SIZE) ?  in f2fs_fname_encrypt()
88 		F2FS_CRYPTO_BLOCK_SIZE : iname->len;  in f2fs_fname_encrypt()
114 	memcpy(workbuf, iname->name, iname->len);  in f2fs_fname_encrypt()
115 	if (iname->len < ciphertext_len)  in f2fs_fname_encrypt()
116 		memset(workbuf + iname->len, 0, ciphertext_len - iname->len);  in f2fs_fname_encrypt()
137 	oname->len = ciphertext_len;  in f2fs_fname_encrypt()
160 	if (iname->len <= 0 || iname->len > lim)  in f2fs_fname_decrypt()
178 	sg_init_one(&src_sg, iname->name, iname->len);  in f2fs_fname_decrypt()
179 	sg_init_one(&dst_sg, oname->name, oname->len);  in f2fs_fname_decrypt()
180 	ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);  in f2fs_fname_decrypt()
195 	oname->len = strnlen(oname->name, iname->len);  in f2fs_fname_decrypt()
196 	return oname->len;  in f2fs_fname_decrypt()
208 static int digest_encode(const char *src, int len, char *dst)  in digest_encode()  argument
213 	while (i < len) {  in digest_encode()
228 static int digest_decode(const char *src, int len, char *dst)  in digest_decode()  argument
234 	while (i < len) {  in digest_decode()
280 	crypto_str->len = olen;  in f2fs_fname_crypto_alloc_buffer()
318 		oname->name[iname->len - 1] = '.';  in f2fs_fname_disk_to_usr()
319 		oname->len = iname->len;  in f2fs_fname_disk_to_usr()
320 		return oname->len;  in f2fs_fname_disk_to_usr()
326 	if (iname->len <= F2FS_FNAME_CRYPTO_DIGEST_SIZE) {  in f2fs_fname_disk_to_usr()
327 		ret = digest_encode(iname->name, iname->len, oname->name);  in f2fs_fname_disk_to_usr()
328 		oname->len = ret;  in f2fs_fname_disk_to_usr()
336 	memcpy(buf + 8, iname->name + iname->len - 16, 16);  in f2fs_fname_disk_to_usr()
339 	oname->len = ret + 1;  in f2fs_fname_disk_to_usr()
355 		oname->name[iname->len - 1] = '.';  in f2fs_fname_usr_to_disk()
356 		oname->len = iname->len;  in f2fs_fname_usr_to_disk()
357 		return oname->len;  in f2fs_fname_usr_to_disk()
381 		fname->disk_name.len = iname->len;  in f2fs_fname_setup_filename()
389 		ret = f2fs_fname_crypto_alloc_buffer(dir, iname->len,  in f2fs_fname_setup_filename()
397 		fname->disk_name.len = fname->crypto_buf.len;  in f2fs_fname_setup_filename()
408 	if ((bigname && (iname->len != 33)) ||  in f2fs_fname_setup_filename()
409 	    (!bigname && (iname->len > 43)))  in f2fs_fname_setup_filename()
415 	ret = digest_decode(iname->name + bigname, iname->len - bigname,  in f2fs_fname_setup_filename()
421 	fname->crypto_buf.len = ret;  in f2fs_fname_setup_filename()
426 		fname->disk_name.len = fname->crypto_buf.len;  in f2fs_fname_setup_filename()