1 /* 2 * Copyright (c) 2014, STMicroelectronics International N.V. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TEE_FS_H 29 #define TEE_FS_H 30 31 #include <stddef.h> 32 #include <stdint.h> 33 34 #define TEE_FS_NAME_MAX 350 35 36 typedef int tee_fs_off_t; 37 typedef uint32_t tee_fs_mode_t; 38 typedef struct tee_fs_dir tee_fs_dir; 39 40 struct tee_fs_dirent { 41 char *d_name; 42 }; 43 44 /* 45 * tee_fs implemets a POSIX like secure file system 46 */ 47 struct tee_file_operations { 48 int (*open)(const char *file, int flags, ...); 49 int (*close)(int fd); 50 int (*read)(int fd, void *buf, size_t len); 51 int (*write)(int fd, const void *buf, size_t len); 52 tee_fs_off_t (*lseek)(int fd, tee_fs_off_t offset, int whence); 53 int (*rename)(const char *old, const char *new); 54 int (*unlink)(const char *file); 55 int (*ftruncate)(int fd, tee_fs_off_t length); 56 int (*mkdir)(const char *path, tee_fs_mode_t mode); 57 tee_fs_dir *(*opendir)(const char *name); 58 int (*closedir)(tee_fs_dir *d); 59 struct tee_fs_dirent *(*readdir)(tee_fs_dir *d); 60 int (*rmdir)(const char *pathname); 61 int (*access)(const char *name, int mode); 62 }; 63 64 struct tee_fs_rpc { 65 int op; 66 int flags; 67 int arg; 68 int fd; 69 uint32_t len; 70 int res; 71 }; 72 73 extern struct tee_file_operations tee_file_ops; 74 75 int tee_fs_send_cmd(struct tee_fs_rpc *bf_cmd, void *data, uint32_t len, 76 uint32_t mode); 77 78 #endif 79