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* fhandler.h (class fhandler_dev_raw): Add drive information members

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drive_size, current_position and bytes_per_sector.
	(fhandler_dev_floppy::get_drive_info): Declare.
	* fhandler_floppy.cc (fhandler_dev_floppy::is_eom): Define ERROR_SEEK
	and ERROR_SECTOR_NOT_FOUND as end-of-medium conditions.
	(fhandler_dev_floppy::get_drive_info): New method to have one function
	retrieving drive info.
	(fhandler_dev_floppy::open): Call get_drive_info to get drive
	information right from the start.
	(fhandler_dev_floppy::lseek): Use and set drive information members.
	Especially keep track of current_position.
	(fhandler_dev_floppy::ioctl): Ditto.
	* fhandler_raw.cc (fhandler_dev_raw::write_file): Keep track of
	current_position.
	(fhandler_dev_raw::read_file): Ditto.
	(fhandler_dev_raw::raw_read): Never try to read beyond end-of-medium.
	(fhandler_dev_raw::dup): Handle new drive information members.
This commit is contained in:
Corinna Vinschen
2005-09-26 14:55:40 +00:00
parent d5f4ee62b7
commit b470a0e81f
4 changed files with 126 additions and 150 deletions
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6
winsup/cygwin/fhandler.h
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@@ -551,6 +551,9 @@ public:
class fhandler_dev_raw: public fhandler_base
{
protected:
_off64_t drive_size;
_off64_t current_position;
unsigned long bytes_per_sector;
char *devbuf;
size_t devbufsiz;
size_t devbufstart;
@@ -600,6 +603,9 @@ class fhandler_dev_raw: public fhandler_base
class fhandler_dev_floppy: public fhandler_dev_raw
{
private:
int fhandler_dev_floppy::get_drive_info (struct hd_geometry *geo);
protected:
virtual int is_eom (int win_error);
virtual int is_eof (int win_error);