Re: Ejecting removable disks and icons
Re: Ejecting removable disks and icons
- Subject: Re: Ejecting removable disks and icons
- From: Jeremy Pereira <email@hidden>
- Date: Tue, 20 Dec 2005 09:59:39 +0900
Ah, that makes sense.
I'd like to emphasize at this point that I am only porting this
software, the design is not my fault!
The software was originally written to talk to SCSI disks via a
traditional SCSI pass through device. There is a user mode service
which does all of the reads and writes and there is a kernel mode VFS
driver. The two components talk to each other through a device file
created for the purpose (call it the coms device), the driver by
making function calls direct and the user mode service through the
ioctl interface.
The existing software passes the path to the coms device to the mount
system call, *not* the IOMedia's BSD device. Would I be correct in
guessing that the system uses the mount point's device file to locate
the IOMedia object?
On Dec 20, 2005, at 00:59, Dan Markarian wrote:
Hi Jeremy,
It sounds as though the file system does not match against a media
object in I/O Kit. We require the media object in order to request
an ejection and also locate its icon. Does the disk in question
not have a media object created for it? Does the file system talk
directly to USB?
Dan
On 18 Dec 2005, at 5:59 AM, Jeremy Pereira wrote:
I am porting a file system driver for magneto-optical disk drives
from BSD to Mac OS X. Everything works fine at the BSD level.
Disks will mount and you can read and write files to them and
everything else you would normally expect to do.
By creating an appropriate bundle in /System/Library/FileSystems I
have got disks to automatically mount and appear as drives in the
Finder. However, I have two issues:
1. The Finder will not eject disks when you ask it to. When you
press the eject button next to the drive icon, nothing happens
except any open windows displaying the content of the drive revert
back up to the "computer" view.
2. The icon I am getting is the network drive icon. A USB drive
icon would be more appropriate.
The more pressing problem is the eject issue. How does the Finder
notify the OS that a volume should be unmounted and ejected?
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