70 			const struct qstr *iname, struct f2fs_str *oname)  in f2fs_fname_encrypt()  argument
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()
149 			const struct f2fs_str *iname, struct f2fs_str *oname)  in f2fs_fname_decrypt()  argument
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()
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()
309 			const struct f2fs_str *iname,  in f2fs_fname_disk_to_usr()  argument
312 	const struct qstr qname = FSTR_TO_QSTR(iname);  in f2fs_fname_disk_to_usr()
318 		oname->name[iname->len - 1] = '.';  in f2fs_fname_disk_to_usr()
319 		oname->len = iname->len;  in f2fs_fname_disk_to_usr()
324 		return f2fs_fname_decrypt(inode, iname, oname);  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()
336 	memcpy(buf + 8, iname->name + iname->len - 16, 16);  in f2fs_fname_disk_to_usr()
347 			const struct qstr *iname,  in f2fs_fname_usr_to_disk()  argument
353 	if (is_dot_dotdot(iname)) {  in f2fs_fname_usr_to_disk()
355 		oname->name[iname->len - 1] = '.';  in f2fs_fname_usr_to_disk()
356 		oname->len = iname->len;  in f2fs_fname_usr_to_disk()
361 		res = f2fs_fname_encrypt(inode, iname, oname);  in f2fs_fname_usr_to_disk()
370 int f2fs_fname_setup_filename(struct inode *dir, const struct qstr *iname,  in f2fs_fname_setup_filename()  argument
377 	fname->usr_fname = iname;  in f2fs_fname_setup_filename()
379 	if (!f2fs_encrypted_inode(dir) || is_dot_dotdot(iname)) {  in f2fs_fname_setup_filename()
380 		fname->disk_name.name = (unsigned char *)iname->name;  in f2fs_fname_setup_filename()
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()
393 		ret = f2fs_fname_encrypt(dir, iname, &fname->crypto_buf);  in f2fs_fname_setup_filename()
406 	if (iname->name[0] == '_')  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()