64 			      const struct qstr *iname,  in ext4_fname_encrypt()  argument
79 	if (iname->len <= 0 || iname->len > lim)  in ext4_fname_encrypt()
82 	ciphertext_len = (iname->len < EXT4_CRYPTO_BLOCK_SIZE) ?  in ext4_fname_encrypt()
83 		EXT4_CRYPTO_BLOCK_SIZE : iname->len;  in ext4_fname_encrypt()
110 	memcpy(workbuf, iname->name, iname->len);  in ext4_fname_encrypt()
111 	if (iname->len < ciphertext_len)  in ext4_fname_encrypt()
112 		memset(workbuf + iname->len, 0, ciphertext_len - iname->len);  in ext4_fname_encrypt()
144 			      const struct ext4_str *iname,  in ext4_fname_decrypt()  argument
157 	if (iname->len <= 0 || iname->len > lim)  in ext4_fname_decrypt()
160 	tmp_in[0].name = iname->name;  in ext4_fname_decrypt()
161 	tmp_in[0].len = iname->len;  in ext4_fname_decrypt()
179 	sg_init_one(&src_sg, iname->name, iname->len);  in ext4_fname_decrypt()
181 	ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);  in ext4_fname_decrypt()
195 	oname->len = strnlen(oname->name, iname->len);  in ext4_fname_decrypt()
314 			    const struct ext4_str *iname,  in _ext4_fname_disk_to_usr()  argument
320 	if (iname->len < 3) {  in _ext4_fname_disk_to_usr()
322 		if (iname->name[0] == '.' && iname->name[iname->len-1] == '.') {  in _ext4_fname_disk_to_usr()
324 			oname->name[iname->len-1] = '.';  in _ext4_fname_disk_to_usr()
325 			oname->len = iname->len;  in _ext4_fname_disk_to_usr()
329 	if (iname->len < EXT4_CRYPTO_BLOCK_SIZE) {  in _ext4_fname_disk_to_usr()
334 		return ext4_fname_decrypt(inode, iname, oname);  in _ext4_fname_disk_to_usr()
336 	if (iname->len <= EXT4_FNAME_CRYPTO_DIGEST_SIZE) {  in _ext4_fname_disk_to_usr()
337 		ret = digest_encode(iname->name, iname->len, oname->name);  in _ext4_fname_disk_to_usr()
346 	memcpy(buf + 8, iname->name + iname->len - 16, 16);  in _ext4_fname_disk_to_usr()
358 	struct ext4_str iname = {.name = (unsigned char *) de->name,  in ext4_fname_disk_to_usr()  local
361 	return _ext4_fname_disk_to_usr(inode, hinfo, &iname, oname);  in ext4_fname_disk_to_usr()
369 			   const struct qstr *iname,  in ext4_fname_usr_to_disk()  argument
375 	if (iname->len < 3) {  in ext4_fname_usr_to_disk()
377 		if (iname->name[0] == '.' &&  in ext4_fname_usr_to_disk()
378 				iname->name[iname->len-1] == '.') {  in ext4_fname_usr_to_disk()
380 			oname->name[iname->len-1] = '.';  in ext4_fname_usr_to_disk()
381 			oname->len = iname->len;  in ext4_fname_usr_to_disk()
386 		res = ext4_fname_encrypt(inode, iname, oname);  in ext4_fname_usr_to_disk()
395 int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname,  in ext4_fname_setup_filename()  argument
402 	fname->usr_fname = iname;  in ext4_fname_setup_filename()
405 	    ((iname->name[0] == '.') &&  in ext4_fname_setup_filename()
406 	     ((iname->len == 1) ||  in ext4_fname_setup_filename()
407 	      ((iname->name[1] == '.') && (iname->len == 2))))) {  in ext4_fname_setup_filename()
408 		fname->disk_name.name = (unsigned char *) iname->name;  in ext4_fname_setup_filename()
409 		fname->disk_name.len = iname->len;  in ext4_fname_setup_filename()
417 		ret = ext4_fname_crypto_alloc_buffer(dir, iname->len,  in ext4_fname_setup_filename()
421 		ret = ext4_fname_encrypt(dir, iname, &fname->crypto_buf);  in ext4_fname_setup_filename()
434 	if (iname->name[0] == '_')  in ext4_fname_setup_filename()
436 	if ((bigname && (iname->len != 33)) ||  in ext4_fname_setup_filename()
437 	    (!bigname && (iname->len > 43)))  in ext4_fname_setup_filename()
443 	ret = digest_decode(iname->name + bigname, iname->len - bigname,  in ext4_fname_setup_filename()