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reset read/write position properly on first cluster allocation

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Dave Murphy 2008-05-12 16:10:42 +00:00
parent 8d36ebe061
commit ad1161c083
1 changed files with 10 additions and 0 deletions
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10
source/fatfile.c
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@ -56,6 +56,10 @@
2008-05-12 - Chishm 2008-05-12 - Chishm
* Modified WinterMute's seek then write fix for elegance * Modified WinterMute's seek then write fix for elegance
* Removed resetPosition * Removed resetPosition
2008-05-12 - WinterMute
* Modified Chishm's elegant fix to reset the read/write positions
*/ */
@ -594,6 +598,12 @@ int _FAT_write_r (struct _reent *r,int fd, const char *ptr, int len) {
file->appendPosition.cluster = file->startCluster; file->appendPosition.cluster = file->startCluster;
file->appendPosition.sector = 0; file->appendPosition.sector = 0;
file->appendPosition.byte = 0; file->appendPosition.byte = 0;
if ( file->currentPosition < partition->bytesPerCluster ) {
file->rwPosition.cluster = file->startCluster;
file->rwPosition.sector = (file->currentPosition % partition->bytesPerCluster) / BYTES_PER_READ;
file->rwPosition.byte = file->currentPosition % BYTES_PER_READ;
}
} }
if (file->append) { if (file->append) {