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Commit cdccaa94 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Jens Axboe
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cdrom: move shared static to cdrom_device_info 



The keeplocked variable in the cdrom driver is shared across multiple
drives, but set in per-device ioctls.  Move it to the per-device struct,
avoiding that the setting on one drive affects the driver's behavior
when closing another.

[ Impact: limit udev's confusion to one drive when a CD burning program
  unlocks the CD door at the end of burning. ]

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 37b40adf

drivers/cdrom/cdrom.c

+5 −7
Original line number Diff line number Diff line
@@ -286,8 +286,6 @@ 


/* used to tell the module to turn on full debugging messages */

static bool debug;

/* used to keep tray locked at all times */

static int keeplocked;

/* default compatibility mode */

static bool autoclose=1;

static bool autoeject;
@@ -1204,7 +1202,7 @@ void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) 
		cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);

		cdrom_dvd_rw_close_write(cdi);



		if ((cdo->capability & CDC_LOCK) && !keeplocked) {

		if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {

			cdinfo(CD_CLOSE, "Unlocking door!\n");

			cdo->lock_door(cdi, 0);

		}
@@ -1371,7 +1369,7 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) 
	curslot = info->hdr.curslot;

	kfree(info);



	if (cdi->use_count > 1 || keeplocked) {

	if (cdi->use_count > 1 || cdi->keeplocked) {

		if (slot == CDSL_CURRENT) {

	    		return curslot;

		} else {
@@ -2289,7 +2287,7 @@ static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) 


	if (!CDROM_CAN(CDC_OPEN_TRAY))

		return -ENOSYS;

	if (cdi->use_count != 1 || keeplocked)

	if (cdi->use_count != 1 || cdi->keeplocked)

		return -EBUSY;

	if (CDROM_CAN(CDC_LOCK)) {

		int ret = cdi->ops->lock_door(cdi, 0);
@@ -2316,7 +2314,7 @@ static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, 


	if (!CDROM_CAN(CDC_OPEN_TRAY))

		return -ENOSYS;

	if (keeplocked)

	if (cdi->keeplocked)

		return -EBUSY;



	cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
@@ -2447,7 +2445,7 @@ static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, 
	if (!CDROM_CAN(CDC_LOCK))

		return -EDRIVE_CANT_DO_THIS;



	keeplocked = arg ? 1 : 0;

	cdi->keeplocked = arg ? 1 : 0;



	/*

	 * Don't unlock the door on multiple opens by default, but allow

include/linux/cdrom.h

+2 −1
Original line number Diff line number Diff line
@@ -952,7 +952,8 @@ struct cdrom_device_info { 
    	char name[20];                  /* name of the device type */

/* per-device flags */

        __u8 sanyo_slot		: 2;	/* Sanyo 3 CD changer support */

        __u8 reserved		: 6;	/* not used yet */

        __u8 keeplocked		: 1;	/* CDROM_LOCKDOOR status */

        __u8 reserved		: 5;	/* not used yet */

	int cdda_method;		/* see flags */

	__u8 last_sense;

	__u8 media_written;		/* dirty flag, DVD+RW bookkeeping */