Alessandro Angelino / mbed-hal

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Dependencies:   target-freescale

Fork of mbed-hal by Morpheus

common/FileSystemLike.cpp@4:473d4af53300, 2016-04-04 (annotated)

Committer:
Alessandro Angelino
Date:
Mon Apr 04 14:24:07 2016 +0100
Revision:
4:473d4af53300
Parent:
0:9c59db1fbc9e 
Fix function to get sp when in unprivileged mode

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:9c59db1fbc9e 1 /* mbed Microcontroller Library
screamer 0:9c59db1fbc9e 2 * Copyright (c) 2006-2013 ARM Limited
screamer 0:9c59db1fbc9e 3 *
screamer 0:9c59db1fbc9e 4 * Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:9c59db1fbc9e 5 * you may not use this file except in compliance with the License.
screamer 0:9c59db1fbc9e 6 * You may obtain a copy of the License at
screamer 0:9c59db1fbc9e 7 *
screamer 0:9c59db1fbc9e 8 * http://www.apache.org/licenses/LICENSE-2.0
screamer 0:9c59db1fbc9e 9 *
screamer 0:9c59db1fbc9e 10 * Unless required by applicable law or agreed to in writing, software
screamer 0:9c59db1fbc9e 11 * distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:9c59db1fbc9e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:9c59db1fbc9e 13 * See the License for the specific language governing permissions and
screamer 0:9c59db1fbc9e 14 * limitations under the License.
screamer 0:9c59db1fbc9e 15 */
screamer 0:9c59db1fbc9e 16 #include "FileSystemLike.h"
screamer 0:9c59db1fbc9e 17
screamer 0:9c59db1fbc9e 18 namespace mbed {
screamer 0:9c59db1fbc9e 19
screamer 0:9c59db1fbc9e 20 class BaseDirHandle : public DirHandle {
screamer 0:9c59db1fbc9e 21 public:
screamer 0:9c59db1fbc9e 22 /*
screamer 0:9c59db1fbc9e 23 We keep track of our current location as the n'th object in the
screamer 0:9c59db1fbc9e 24 FileSystemLike list. Using a Base* instead would cause problems if that
screamer 0:9c59db1fbc9e 25 object were to be destroyed between readdirs.
screamer 0:9c59db1fbc9e 26 Using this method does mean though that destroying/creating objects can
screamer 0:9c59db1fbc9e 27 give unusual results from readdir.
screamer 0:9c59db1fbc9e 28 */
screamer 0:9c59db1fbc9e 29 off_t n;
screamer 0:9c59db1fbc9e 30 struct dirent cur_entry;
screamer 0:9c59db1fbc9e 31
screamer 0:9c59db1fbc9e 32 BaseDirHandle() : n(0), cur_entry() {
screamer 0:9c59db1fbc9e 33 }
screamer 0:9c59db1fbc9e 34
screamer 0:9c59db1fbc9e 35 virtual int closedir() {
screamer 0:9c59db1fbc9e 36 delete this;
screamer 0:9c59db1fbc9e 37 return 0;
screamer 0:9c59db1fbc9e 38 }
screamer 0:9c59db1fbc9e 39
screamer 0:9c59db1fbc9e 40 virtual struct dirent *readdir() {
screamer 0:9c59db1fbc9e 41 FileBase *ptr = FileBase::get(n);
screamer 0:9c59db1fbc9e 42 if (ptr == NULL) return NULL;
screamer 0:9c59db1fbc9e 43
screamer 0:9c59db1fbc9e 44 /* Increment n, so next readdir gets the next item */
screamer 0:9c59db1fbc9e 45 n++;
screamer 0:9c59db1fbc9e 46
screamer 0:9c59db1fbc9e 47 /* Setup cur entry and return a pointer to it */
screamer 0:9c59db1fbc9e 48 std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX);
screamer 0:9c59db1fbc9e 49 return &cur_entry;
screamer 0:9c59db1fbc9e 50 }
screamer 0:9c59db1fbc9e 51
screamer 0:9c59db1fbc9e 52 virtual off_t telldir() {
screamer 0:9c59db1fbc9e 53 return n;
screamer 0:9c59db1fbc9e 54 }
screamer 0:9c59db1fbc9e 55
screamer 0:9c59db1fbc9e 56 virtual void seekdir(off_t offset) {
screamer 0:9c59db1fbc9e 57 n = offset;
screamer 0:9c59db1fbc9e 58 }
screamer 0:9c59db1fbc9e 59
screamer 0:9c59db1fbc9e 60 virtual void rewinddir() {
screamer 0:9c59db1fbc9e 61 n = 0;
screamer 0:9c59db1fbc9e 62 }
screamer 0:9c59db1fbc9e 63 };
screamer 0:9c59db1fbc9e 64
screamer 0:9c59db1fbc9e 65 FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) {
screamer 0:9c59db1fbc9e 66
screamer 0:9c59db1fbc9e 67 }
screamer 0:9c59db1fbc9e 68
screamer 0:9c59db1fbc9e 69 FileSystemLike::~FileSystemLike() {
screamer 0:9c59db1fbc9e 70
screamer 0:9c59db1fbc9e 71 }
screamer 0:9c59db1fbc9e 72
screamer 0:9c59db1fbc9e 73 DirHandle *FileSystemLike::opendir() {
screamer 0:9c59db1fbc9e 74 return new BaseDirHandle();
screamer 0:9c59db1fbc9e 75 }
screamer 0:9c59db1fbc9e 76
screamer 0:9c59db1fbc9e 77 } // namespace mbed
screamer 0:9c59db1fbc9e 78