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* fhandler.h (class fhandler_dev_raw): Add members devbufalloc and

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devbufalign.
	(class fhandler_dev_floppy): Remove member bytes_per_sector;
	* fhandler_floppy.cc (bytes_per_sector): Define as devbufalign.
	(fhandler_dev_floppy::open): Set devbufalign to a multiple of the
	sector size and handle devbuf allocation and alignment in !O_DIRECT
	case here.  Change comment accordingly.
	Call FSCTL_ALLOW_EXTENDED_DASD_IO for partitions as well.
	(fhandler_dev_floppy::raw_write): Fix comment.  Rewrite and fix
	writing behaviour when application uses read and lseek.
	(fhandler_dev_floppy::lseek): Use rounddown macro.  Call
	SetFilePointerEx rather than the old SetFilePointer.
	(fhandler_dev_floppy::ioctl): Reformat switch.  Call
	IOCTL_DISK_UPDATE_PROPERTIES rather than IOCTL_DISK_UPDATE_DRIVE_SIZE
	in BLKRRPART case.  Support BLKIOMIN, BLKIOOPT, BLKPBSZGET and
	BLKALIGNOFF.
	* fhandler_raw.cc (fhandler_dev_raw::fhandler_dev_raw): Initialize
	all devbuf-related members.
	(fhandler_dev_raw::~fhandler_dev_raw): Delete devbufalloc rather than
	devbuf.
	(fhandler_dev_raw::open): Drop allocating devbuf.
	(fhandler_dev_raw::dup): Allocate devbufalloc and set devbuf to support
	new sector-aligned devbuf handling.
	(fhandler_dev_raw::fixup_after_exec): Ditto.
	* fhandler_tape.cc (fhandler_dev_tape::open): Ditto, set devbufalign
	to 1.
	* include/cygwin/fs.h (BLKIOMIN): Define.
	(BLKIOOPT): Define.
	(BLKALIGNOFF): Define.
	(BLKPBSZGET): Define.
This commit is contained in:
Corinna Vinschen
2012-10-13 12:34:18 +00:00
parent 93c9cdc1b0
commit db8224e8be
6 changed files with 209 additions and 80 deletions
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3
winsup/cygwin/fhandler.h
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@ -798,7 +798,9 @@ class fhandler_mailslot : public fhandler_base_overlapped
class fhandler_dev_raw: public fhandler_base
{
protected:
char *devbufalloc;
char *devbuf;
size_t devbufalign;
size_t devbufsiz;
size_t devbufstart;
size_t devbufend;
@ -856,7 +858,6 @@ class fhandler_dev_floppy: public fhandler_dev_raw
{
private:
_off64_t drive_size;
unsigned long bytes_per_sector;
part_t *partitions;
struct status_flags
{