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* fhandler_floppy.cc (fhandler_dev_floppy::lseek): Remove lloffset.

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Use offset directly.  Add shortcut for lseek(fd, 0, SEEK_CUR) case.
	(fhandler_dev_floppy::ioctl): Drop wrong RDSETBLK case.
	* fhandler_raw.cc (fhandler_dev_raw::ioctl): Revamp RDSETBLK code.
This commit is contained in:
Corinna Vinschen
2012-10-16 09:52:26 +00:00
parent 2c9cefa586
commit c74e68b7e2
3 changed files with 34 additions and 38 deletions
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33
winsup/cygwin/fhandler_raw.cc
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@ -11,6 +11,7 @@
#include "winsup.h"
#include <unistd.h>
#include <cygwin/rdevio.h>
#include <sys/mtio.h>
#include <sys/param.h>
@ -151,36 +152,32 @@ fhandler_dev_raw::ioctl (unsigned int cmd, void *buf)
mop.mt_count = op->rd_parm;
ret = ioctl (MTIOCTOP, &mop);
}
else if ((devbuf && ((op->rd_parm <= 1 && (devbufend - devbufstart))
|| op->rd_parm < devbufend - devbufstart))
|| (op->rd_parm > 1 && (op->rd_parm % 512))
else if ((op->rd_parm <= 1 && get_major () != DEV_TAPE_MAJOR)
|| (op->rd_parm > 1 && (op->rd_parm % devbufalign))
|| (get_flags () & O_DIRECT))
/* The conditions for a *valid* parameter are these:
- If there's still data in the current buffer, it must
fit in the new buffer.
- The new size is either 0 or 1, both indicating unbufferd
I/O, or the new buffersize must be a multiple of 512.
/* The conditions for a valid parameter are:
- The new size is either 0 or 1, both indicating unbuffered
I/O, and the device is a tape device.
- Or, the new buffersize must be a multiple of the
required buffer alignment.
- In the O_DIRECT case, the whole request is invalid. */
ret = ERROR_INVALID_PARAMETER;
else if (!devbuf || op->rd_parm != devbufsiz)
{
char *buf = NULL;
_off64_t curpos = lseek (0, SEEK_CUR);
if (op->rd_parm > 1L)
buf = new char [op->rd_parm];
if (buf && devbufsiz > 1L)
{
memcpy (buf, devbuf + devbufstart, devbufend - devbufstart);
devbufend -= devbufstart;
}
else
devbufend = 0;
buf = new char [op->rd_parm + devbufalign];
if (devbufsiz > 1L)
delete [] devbufalloc;
devbufstart = 0;
devbuf = buf;
devbufalloc = buf;
devbuf = (char *) roundup2 ((uintptr_t) buf, devbufalign);
devbufsiz = op->rd_parm ?: 1L;
devbufstart = devbufend = 0;
lseek (curpos, SEEK_SET);
}
break;
default: