samba: cannot auto umount CD-ROM

[Dai Yuwen <yuwen@micetek.com.cn>]

Hi, all

I want to samba auto mount/umount CD-ROM.  This is my `cdrom' section of 
smb.conf:

[cdrom]
    comment = Samba server's CD-ROM
    writable = no
    locking = no
    path = /cdrom
    public = yes
;
; The next two parameters show how to auto-mount a CD-ROM when the
;       cdrom share is accesed. For this to work /etc/fstab must contain
;       an entry like this:
;
;       /dev/scd0   /cdrom  iso9660 defaults,noauto,ro,user   0 0
;
; The CD-ROM gets unmounted automatically after the connection to the
;
; If you don't want to use auto-mounting/unmounting make sure the CD
;       is mounted on /cdrom
;
    preexec = /bin/mount /cdrom
    postexec = /bin/umount /cdrom

Auto mount is OK.  Every time a Windows user clicks the `cdrom' directory, 
`/cdrom' will be mounted.  But it seems that `postexec' is not executed 
after the user had closed the whole connection to the samba server?  To 
eject the cd-rom, I have  to kill the samba process that uses /cdrom.  Very 
inconvenient.  Any solutions?

samba: 2.2.3a-12 on Woody

Best regards,
Dai Yuwen