The behaviour of eject/lock_door ioctl is not consistent, so add some check
before scsi_cmd_ioctl.
Signed-off-by: Dave Young <[EMAIL PROTECTED]>
---
drivers/cdrom/cdrom.c | 42 ++++++++++++++++++++++++++++++++++++------
1 file changed, 36 insertions(+), 6 deletions(-)
diff -upr linux/drivers/cdrom/cdrom.c linux.new/drivers/cdrom/cdrom.c
--- linux/drivers/cdrom/cdrom.c 2008-01-04 15:06:50.000000000 +0800
+++ linux.new/drivers/cdrom/cdrom.c 2008-01-04 15:05:06.000000000 +0800
@@ -2236,6 +2236,15 @@ static int cdrom_ioctl_multisession(stru
return 0;
}
+static int cdrom_eject_check(struct cdrom_device_info *cdi)
+{
+ if (!CDROM_CAN(CDC_OPEN_TRAY))
+ return -ENOSYS;
+ if (cdi->use_count != 1 || keeplocked)
+ return -EBUSY;
+ return 0;
+}
+
static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
{
cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
@@ -2392,22 +2401,31 @@ static int cdrom_ioctl_reset(struct cdro
return cdi->ops->reset(cdi);
}
-static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
+static int cdrom_lock_door_check(struct cdrom_device_info *cdi,
unsigned long arg)
{
- cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
-
if (!CDROM_CAN(CDC_LOCK))
return -EDRIVE_CANT_DO_THIS;
-
- keeplocked = arg ? 1 : 0;
-
/*
* Don't unlock the door on multiple opens by default, but allow
* root to do so.
*/
if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
return -EBUSY;
+
+ return 0;
+}
+
+
+static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
+ unsigned long arg)
+{
+ cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
+
+ /*
+ * cdrom_lock_door_check is done in cdrom_ioctl.
+ */
+ keeplocked = arg ? 1 : 0;
return cdi->ops->lock_door(cdi, arg);
}
@@ -2701,6 +2719,18 @@ int cdrom_ioctl(struct file * file, stru
int ret;
struct gendisk *disk = ip->i_bdev->bd_disk;
+ if (cmd == CDROMEJECT) {
+ ret = cdrom_eject_check(cdi);
+ if (ret)
+ return ret;
+ }
+
+ if (cmd == CDROM_LOCKDOOR) {
+ ret = cdrom_lock_door_check(cdi, arg);
+ if (ret)
+ return ret;
+ }
+
/*
* Try the generic SCSI command ioctl's first.
*/
--
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