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Cygwin: raw disk I/O: lock floppys as well 

The workaround to access the full disk required since Vista
and described in http://support.microsoft.com/kb/942448
(NOT ACCESSIBLE at the time of writing this commit message)
is required on floppy drives as well.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2020-04-24 16:22:26 +02:00
parent b834921895
commit 39a1c3c96f
1 changed files with 2 additions and 2 deletions
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4
winsup/cygwin/fhandler_floppy.cc
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@ -161,7 +161,8 @@ fhandler_dev_floppy::lock_partition (DWORD to_write)
If there's some file handle open on one of the affected partitions,
this fails, but that's how it works...
The high partition major numbers don't have a partition 0. */
if (get_major () >= DEV_SD_HIGHPART_START || get_minor () % 16 != 0)
if (get_major () == DEV_FLOPPY_MAJOR
|| get_major () >= DEV_SD_HIGHPART_START || get_minor () % 16 != 0)
{
if (!DeviceIoControl (get_handle (), FSCTL_LOCK_VOLUME,
NULL, 0, NULL, 0, &bytes_read, NULL))
@ -302,7 +303,6 @@ fhandler_dev_floppy::write_file (const void *buf, DWORD to_write,
See http://support.microsoft.com/kb/942448 for details.
What we do here is to lock the affected partition(s) and retry. */
if (*err == ERROR_ACCESS_DENIED
&& get_major () != DEV_FLOPPY_MAJOR
&& get_major () != DEV_CDROM_MAJOR
&& (get_flags () & O_ACCMODE) != O_RDONLY
&& lock_partition (to_write))