59 			      const struct qstr *iname,  in ext4_fname_encrypt()  argument
72 	if (iname->len <= 0 || iname->len > ctx->lim)  in ext4_fname_encrypt()
75 	ciphertext_len = (iname->len < EXT4_CRYPTO_BLOCK_SIZE) ?  in ext4_fname_encrypt()
76 		EXT4_CRYPTO_BLOCK_SIZE : iname->len;  in ext4_fname_encrypt()
96 	memcpy(workbuf, iname->name, iname->len);  in ext4_fname_encrypt()
97 	if (iname->len < ciphertext_len)  in ext4_fname_encrypt()
98 		memset(workbuf + iname->len, 0, ciphertext_len - iname->len);  in ext4_fname_encrypt()
136 			      const struct ext4_str *iname,  in ext4_fname_decrypt()  argument
148 	if (iname->len <= 0 || iname->len > ctx->lim)  in ext4_fname_decrypt()
151 	tmp_in[0].name = iname->name;  in ext4_fname_decrypt()
152 	tmp_in[0].len = iname->len;  in ext4_fname_decrypt()
170 	memcpy(workbuf, iname->name, iname->len);  in ext4_fname_decrypt()
178 	ablkcipher_request_set_crypt(req, sg, sg, iname->len, iv);  in ext4_fname_decrypt()
187 		memcpy(oname->name, workbuf, iname->len);  in ext4_fname_decrypt()
188 		res = iname->len;  in ext4_fname_decrypt()
199 	oname->len = strnlen(oname->name, iname->len);  in ext4_fname_decrypt()
534 			    const struct ext4_str *iname,  in _ext4_fname_disk_to_usr()  argument
542 	if (iname->len < 3) {  in _ext4_fname_disk_to_usr()
544 		if (iname->name[0] == '.' && iname->name[iname->len-1] == '.') {  in _ext4_fname_disk_to_usr()
546 			oname->name[iname->len-1] = '.';  in _ext4_fname_disk_to_usr()
547 			oname->len = iname->len;  in _ext4_fname_disk_to_usr()
552 		return ext4_fname_decrypt(ctx, iname, oname);  in _ext4_fname_disk_to_usr()
554 	if (iname->len <= EXT4_FNAME_CRYPTO_DIGEST_SIZE) {  in _ext4_fname_disk_to_usr()
555 		ret = digest_encode(iname->name, iname->len, oname->name);  in _ext4_fname_disk_to_usr()
564 	memcpy(buf + 8, iname->name + iname->len - 16, 16);  in _ext4_fname_disk_to_usr()
576 	struct ext4_str iname = {.name = (unsigned char *) de->name,  in ext4_fname_disk_to_usr()  local
579 	return _ext4_fname_disk_to_usr(ctx, hinfo, &iname, oname);  in ext4_fname_disk_to_usr()
587 			   const struct qstr *iname,  in ext4_fname_usr_to_disk()  argument
594 	if (iname->len < 3) {  in ext4_fname_usr_to_disk()
596 		if (iname->name[0] == '.' &&  in ext4_fname_usr_to_disk()
597 				iname->name[iname->len-1] == '.') {  in ext4_fname_usr_to_disk()
599 			oname->name[iname->len-1] = '.';  in ext4_fname_usr_to_disk()
600 			oname->len = iname->len;  in ext4_fname_usr_to_disk()
605 		res = ext4_fname_encrypt(ctx, iname, oname);  in ext4_fname_usr_to_disk()
618 			    const struct qstr *iname,  in ext4_fname_usr_to_hash()  argument
626 	    ((iname->name[0] == '.') &&  in ext4_fname_usr_to_hash()
627 	     ((iname->len == 1) ||  in ext4_fname_usr_to_hash()
628 	      ((iname->name[1] == '.') && (iname->len == 2))))) {  in ext4_fname_usr_to_hash()
629 		ext4fs_dirhash(iname->name, iname->len, hinfo);  in ext4_fname_usr_to_hash()
633 	if (!ctx->has_valid_key && iname->name[0] == '_') {  in ext4_fname_usr_to_hash()
634 		if (iname->len != 33)  in ext4_fname_usr_to_hash()
636 		ret = digest_decode(iname->name+1, iname->len, buf);  in ext4_fname_usr_to_hash()
644 	if (!ctx->has_valid_key && iname->name[0] != '_') {  in ext4_fname_usr_to_hash()
645 		if (iname->len > 43)  in ext4_fname_usr_to_hash()
647 		ret = digest_decode(iname->name, iname->len, buf);  in ext4_fname_usr_to_hash()
653 	ret = ext4_fname_crypto_alloc_buffer(ctx, iname->len, &tmp);  in ext4_fname_usr_to_hash()
657 	ret = ext4_fname_encrypt(ctx, iname, &tmp);  in ext4_fname_usr_to_hash()