Diff: FATDirHandle.cpp

Revision:

8:c4baca9a2c3d

Parent:

5:b3b3370574cf

--- a/FATDirHandle.cpp	Fri Dec 11 16:16:25 2015 +0000
+++ b/FATDirHandle.cpp	Thu Aug 25 09:34:29 2016 +0100
@@ -25,12 +25,14 @@
 
 using namespace mbed;
 
-FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
+FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir, PlatformMutex * mutex): _mutex(mutex) {
     dir = the_dir;
 }
 
 int FATDirHandle::closedir() {
+    lock();
     int retval = f_closedir(&dir);
+    unlock();
     delete this;
     return retval;
 }
@@ -38,6 +40,7 @@
 struct dirent *FATDirHandle::readdir() {
     FILINFO finfo;
 
+    lock();
 #if _USE_LFN
     finfo.lfname = cur_entry.d_name;
     finfo.lfsize = sizeof(cur_entry.d_name);
@@ -47,33 +50,52 @@
 
 #if _USE_LFN
     if(res != 0 || finfo.fname[0]==0) {
+        unlock();
         return NULL;
     } else {
         if(cur_entry.d_name[0]==0) {
             // No long filename so use short filename.
             memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
         }
+        unlock();
         return &cur_entry;
     }
 #else
     if(res != 0 || finfo.fname[0]==0) {
+        unlock();
         return NULL;
     } else {
         memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
+        unlock();
         return &cur_entry;
     }
 #endif /* _USE_LFN */
 }
 
 void FATDirHandle::rewinddir() {
+    lock();
     dir.index = 0;
+    unlock();
 }
 
 off_t FATDirHandle::telldir() {
-    return dir.index;
+    lock();
+    off_t offset = dir.index;
+    unlock();
+    return offset;
 }
 
 void FATDirHandle::seekdir(off_t location) {
+    lock();
     dir.index = location;
+    unlock();
 }
 
+void FATDirHandle::lock() {
+    _mutex->lock();
+}
+
+void FATDirHandle::unlock() {
+    _mutex->unlock();
+}
+