74 	if (iname->len <= 0 || iname->len > lim)  in ext4_fname_encrypt()
77 	ciphertext_len = (iname->len < EXT4_CRYPTO_BLOCK_SIZE) ?  in ext4_fname_encrypt()
78 		EXT4_CRYPTO_BLOCK_SIZE : iname->len;  in ext4_fname_encrypt()
105 	memcpy(workbuf, iname->name, iname->len);  in ext4_fname_encrypt()
106 	if (iname->len < ciphertext_len)  in ext4_fname_encrypt()
107 		memset(workbuf + iname->len, 0, ciphertext_len - iname->len);  in ext4_fname_encrypt()
127 	oname->len = ciphertext_len;  in ext4_fname_encrypt()
152 	if (iname->len <= 0 || iname->len > lim)  in ext4_fname_decrypt()
156 	tmp_in[0].len = iname->len;  in ext4_fname_decrypt()
174 	sg_init_one(&src_sg, iname->name, iname->len);  in ext4_fname_decrypt()
175 	sg_init_one(&dst_sg, oname->name, oname->len);  in ext4_fname_decrypt()
176 	ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);  in ext4_fname_decrypt()
190 	oname->len = strnlen(oname->name, iname->len);  in ext4_fname_decrypt()
191 	return oname->len;  in ext4_fname_decrypt()
203 static int digest_encode(const char *src, int len, char *dst)  in digest_encode()  argument
208 	while (i < len) {  in digest_encode()
223 static int digest_decode(const char *src, int len, char *dst)  in digest_decode()  argument
229 	while (i < len) {  in digest_decode()
280 	crypto_str->len = olen;  in ext4_fname_crypto_alloc_buffer()
315 	if (iname->len < 3) {  in _ext4_fname_disk_to_usr()
317 		if (iname->name[0] == '.' && iname->name[iname->len-1] == '.') {  in _ext4_fname_disk_to_usr()
319 			oname->name[iname->len-1] = '.';  in _ext4_fname_disk_to_usr()
320 			oname->len = iname->len;  in _ext4_fname_disk_to_usr()
321 			return oname->len;  in _ext4_fname_disk_to_usr()
324 	if (iname->len < EXT4_CRYPTO_BLOCK_SIZE) {  in _ext4_fname_disk_to_usr()
331 	if (iname->len <= EXT4_FNAME_CRYPTO_DIGEST_SIZE) {  in _ext4_fname_disk_to_usr()
332 		ret = digest_encode(iname->name, iname->len, oname->name);  in _ext4_fname_disk_to_usr()
333 		oname->len = ret;  in _ext4_fname_disk_to_usr()
341 	memcpy(buf + 8, iname->name + ((iname->len - 17) & ~15), 16);  in _ext4_fname_disk_to_usr()
344 	oname->len = ret + 1;  in _ext4_fname_disk_to_usr()
354 				 .len = de->name_len };  in ext4_fname_disk_to_usr()
370 	if (iname->len < 3) {  in ext4_fname_usr_to_disk()
373 				iname->name[iname->len-1] == '.') {  in ext4_fname_usr_to_disk()
375 			oname->name[iname->len-1] = '.';  in ext4_fname_usr_to_disk()
376 			oname->len = iname->len;  in ext4_fname_usr_to_disk()
377 			return oname->len;  in ext4_fname_usr_to_disk()
401 	     ((iname->len == 1) ||  in ext4_fname_setup_filename()
402 	      ((iname->name[1] == '.') && (iname->len == 2))))) {  in ext4_fname_setup_filename()
404 		fname->disk_name.len = iname->len;  in ext4_fname_setup_filename()
412 		ret = ext4_fname_crypto_alloc_buffer(dir, iname->len,  in ext4_fname_setup_filename()
420 		fname->disk_name.len = fname->crypto_buf.len;  in ext4_fname_setup_filename()
431 	if ((bigname && (iname->len != 33)) ||  in ext4_fname_setup_filename()
432 	    (!bigname && (iname->len > 43)))  in ext4_fname_setup_filename()
438 	ret = digest_decode(iname->name + bigname, iname->len - bigname,  in ext4_fname_setup_filename()
444 	fname->crypto_buf.len = ret;  in ext4_fname_setup_filename()
450 		fname->disk_name.len = fname->crypto_buf.len;  in ext4_fname_setup_filename()