zhang boie / mbed-dev-f30333

mbed-dev-f303

platform/LocalFileSystem.cpp@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "platform/LocalFileSystem.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18 #if DEVICE_LOCALFILESYSTEM
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 #include "platform/mbed_semihost_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 #include <string.h>
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22 #include <stdio.h>
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 #include <errno.h>
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 namespace mbed {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 /* Extension to FINFO type defined in RTL.h (in Keil RL) - adds 'create time'. */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 typedef struct {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 unsigned char hr; /* Hours [0..23] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 unsigned char min; /* Minutes [0..59] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 unsigned char sec; /* Seconds [0..59] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 unsigned char day; /* Day [1..31] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 unsigned char mon; /* Month [1..12] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 unsigned short year; /* Year [1980..2107] */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 } FTIME;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 typedef struct { /* File Search info record */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 char name[32]; /* File name */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 long size; /* File size in bytes */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40 int fileID; /* System File Identification */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 FTIME create_time; /* Date & time file was created */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42 FTIME write_time; /* Date & time of last write */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 } XFINFO;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45 #define RESERVED_FOR_USER_APPLICATIONS (0x100) /* 0x100 - 0x1ff */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48 static int xffind (const char *pattern, XFINFO *info) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49 unsigned param[4];
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51 param[0] = (unsigned long)pattern;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52 param[1] = (unsigned long)strlen(pattern);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53 param[2] = (unsigned long)info;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 54 param[3] = (unsigned long)sizeof(XFINFO);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 55
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 56 return __semihost(USR_XFFIND, param);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 57 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 58
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 59 #define OPEN_R 0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 60 #define OPEN_B 1
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 61 #define OPEN_PLUS 2
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 62 #define OPEN_W 4
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 63 #define OPEN_A 8
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 64 #define OPEN_INVALID -1
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 65
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 66 int posix_to_semihost_open_flags(int flags) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 67 /* POSIX flags -> semihosting open mode */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 68 int openmode;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 69 if (flags & O_RDWR) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 70 /* a plus mode */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 71 openmode = OPEN_PLUS;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 72 if (flags & O_APPEND) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 73 openmode |= OPEN_A;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 74 } else if (flags & O_TRUNC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 75 openmode |= OPEN_W;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 76 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 77 openmode |= OPEN_R;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 78 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 79 } else if (flags & O_WRONLY) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 80 /* write or append */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 81 if (flags & O_APPEND) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 82 openmode = OPEN_A;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 83 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 84 openmode = OPEN_W;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 85 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 86 } else if (flags == O_RDONLY) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 87 /* read mode */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 88 openmode = OPEN_R;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 89 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 90 /* invalid flags */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 91 openmode = OPEN_INVALID;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 92 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 93
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 94 return openmode;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 95 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 96
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 97 FILEHANDLE local_file_open(const char* name, int flags) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 98 int openmode = posix_to_semihost_open_flags(flags);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 99 if (openmode == OPEN_INVALID) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 100 return (FILEHANDLE)NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 101 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 102
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 103 FILEHANDLE fh = semihost_open(name, openmode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 104 if (fh == -1) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 105 return (FILEHANDLE)NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 106 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 107
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 108 return fh;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 109 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 110
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 111 LocalFileHandle::LocalFileHandle(FILEHANDLE fh) : _fh(fh), pos(0) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 112 // No lock needed in constructor
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 113 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 114
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 115 int LocalFileHandle::close() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 116 int retval = semihost_close(_fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 117 delete this;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 118 return retval;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 119 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 120
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 121 ssize_t LocalFileHandle::write(const void *buffer, size_t length) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 122 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 123 ssize_t n = semihost_write(_fh, (const unsigned char*)buffer, length, 0); // number of characters not written
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 124 n = length - n; // number of characters written
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 125 pos += n;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 126 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 127 return n;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 128 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 129
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 130 ssize_t LocalFileHandle::read(void *buffer, size_t length) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 131 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 132 ssize_t n = semihost_read(_fh, (unsigned char*)buffer, length, 0); // number of characters not read
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 133 n = length - n; // number of characters read
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 134 pos += n;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 135 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 136 return n;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 137 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 138
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 139 int LocalFileHandle::isatty() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 140 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 141 int ret = semihost_istty(_fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 142 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 143 return ret;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 144 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 145
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 146 off_t LocalFileHandle::seek(off_t position, int whence) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 147 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 148 if (whence == SEEK_CUR) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 149 position += pos;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 150 } else if (whence == SEEK_END) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 151 position += semihost_flen(_fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 152 } /* otherwise SEEK_SET, so position is fine */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 153
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 154 /* Always seems to return -1, so just ignore for now. */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 155 semihost_seek(_fh, position);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 156 pos = position;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 157 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 158 return position;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 159 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 160
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 161 int LocalFileHandle::sync() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 162 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 163 int ret = semihost_ensure(_fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 164 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 165 return ret;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 166 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 167
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 168 off_t LocalFileHandle::size() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 169 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 170 off_t off = semihost_flen(_fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 171 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 172 return off;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 173 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 174
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 175 void LocalFileHandle::lock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 176 _mutex.lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 177 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 178
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 179 void LocalFileHandle::unlock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 180 _mutex.unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 181 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 182
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 183 class LocalDirHandle : public DirHandle {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 184
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 185 public:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 186 XFINFO info;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 187
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 188 LocalDirHandle() : info() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 189 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 190
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 191 virtual int close() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 192 // No lock can be used in destructor
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 193 delete this;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 194 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 195 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 196
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 197 virtual int read(struct dirent *ent) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 198 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 199 if (xffind("*", &info)!=0) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 200 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 201 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 202 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 203 memcpy(ent->d_name, info.name, sizeof(info.name));
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 204 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 205 return 1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 206 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 207
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 208 virtual void rewind() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 209 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 210 info.fileID = 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 211 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 212 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 213
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 214 virtual off_t tell() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 215 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 216 int fileId = info.fileID;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 217 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 218 return fileId;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 219 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 220
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 221 virtual void seek(off_t offset) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 222 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 223 info.fileID = offset;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 224 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 225 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 226
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 227 protected:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 228 PlatformMutex _mutex;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 229
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 230 virtual void lock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 231 _mutex.lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 232 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 233
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 234 virtual void unlock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 235 _mutex.unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 236 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 237 };
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 238
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 239 int LocalFileSystem::open(FileHandle **file, const char* name, int flags) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 240 // No global state modified so function is thread safe
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 241
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 242 /* reject filenames with / in them */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 243 for (const char *tmp = name; *tmp; tmp++) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 244 if (*tmp == '/') {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 245 return -EINVAL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 246 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 247 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 248
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 249 int openmode = posix_to_semihost_open_flags(flags);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 250 if (openmode == OPEN_INVALID) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 251 return -EINVAL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 252 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 253
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 254 FILEHANDLE fh = semihost_open(name, openmode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 255 if (fh == -1) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 256 return -EIO;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 257 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 258
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 259 *file = new LocalFileHandle(fh);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 260 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 261 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 262
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 263 int LocalFileSystem::remove(const char *filename) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 264 // No global state modified so function is thread safe
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 265
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 266 return semihost_remove(filename);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 267 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 268
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 269 int LocalFileSystem::open(DirHandle **dir, const char *name) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 270 // No global state modified so function is thread safe
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 271
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 272 *dir = new LocalDirHandle();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 273 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 274 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 275
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 276 } // namespace mbed
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 277
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 278 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 279