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Commit c110a2bd authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: prevent userspace from accessing shut down devices
  ieee1394: sbp2: use correct size of command descriptor block
parents 81b2dbca 551f4cb9

drivers/firewire/fw-cdev.c

+14 −0
Original line number Diff line number Diff line
@@ -113,6 +113,11 @@ static int fw_device_op_open(struct inode *inode, struct file *file) 
	if (device == NULL)

		return -ENODEV;



	if (fw_device_is_shutdown(device)) {

		fw_device_put(device);

		return -ENODEV;

	}



	client = kzalloc(sizeof(*client), GFP_KERNEL);

	if (client == NULL) {

		fw_device_put(device);
@@ -901,6 +906,9 @@ fw_device_op_ioctl(struct file *file, 
{

	struct client *client = file->private_data;



	if (fw_device_is_shutdown(client->device))

		return -ENODEV;



	return dispatch_ioctl(client, cmd, (void __user *) arg);

}
@@ -911,6 +919,9 @@ fw_device_op_compat_ioctl(struct file *file, 
{

	struct client *client = file->private_data;



	if (fw_device_is_shutdown(client->device))

		return -ENODEV;



	return dispatch_ioctl(client, cmd, compat_ptr(arg));

}

#endif
@@ -922,6 +933,9 @@ static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma) 
	unsigned long size;

	int page_count, retval;



	if (fw_device_is_shutdown(client->device))

		return -ENODEV;



	/* FIXME: We could support multiple buffers, but we don't. */

	if (client->buffer.pages != NULL)

		return -EBUSY;

drivers/ieee1394/sbp2.c

+8 −12
Original line number Diff line number Diff line
@@ -1539,15 +1539,13 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb, 


static void sbp2_create_command_orb(struct sbp2_lu *lu,

				    struct sbp2_command_info *cmd,

				    unchar *scsi_cmd,

				    unsigned int scsi_use_sg,

				    unsigned int scsi_request_bufflen,

				    struct scatterlist *sg,

				    enum dma_data_direction dma_dir)

				    struct scsi_cmnd *SCpnt)

{

	struct sbp2_fwhost_info *hi = lu->hi;

	struct sbp2_command_orb *orb = &cmd->command_orb;

	u32 orb_direction;

	unsigned int scsi_request_bufflen = scsi_bufflen(SCpnt);

	enum dma_data_direction dma_dir = SCpnt->sc_data_direction;



	/*

	 * Set-up our command ORB.
@@ -1580,13 +1578,14 @@ static void sbp2_create_command_orb(struct sbp2_lu *lu, 
		orb->data_descriptor_lo = 0x0;

		orb->misc |= ORB_SET_DIRECTION(1);

	} else

		sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_use_sg, sg,

		sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_sg_count(SCpnt),

					 scsi_sglist(SCpnt),

					 orb_direction, dma_dir);



	sbp2util_cpu_to_be32_buffer(orb, sizeof(*orb));



	memset(orb->cdb, 0, 12);

	memcpy(orb->cdb, scsi_cmd, COMMAND_SIZE(*scsi_cmd));

	memset(orb->cdb, 0, sizeof(orb->cdb));

	memcpy(orb->cdb, SCpnt->cmnd, SCpnt->cmd_len);

}



static void sbp2_link_orb_command(struct sbp2_lu *lu,
@@ -1669,16 +1668,13 @@ static void sbp2_link_orb_command(struct sbp2_lu *lu, 
static int sbp2_send_command(struct sbp2_lu *lu, struct scsi_cmnd *SCpnt,

			     void (*done)(struct scsi_cmnd *))

{

	unchar *scsi_cmd = (unchar *)SCpnt->cmnd;

	struct sbp2_command_info *cmd;



	cmd = sbp2util_allocate_command_orb(lu, SCpnt, done);

	if (!cmd)

		return -EIO;



	sbp2_create_command_orb(lu, cmd, scsi_cmd, scsi_sg_count(SCpnt),

				scsi_bufflen(SCpnt), scsi_sglist(SCpnt),

				SCpnt->sc_data_direction);

	sbp2_create_command_orb(lu, cmd, SCpnt);

	sbp2_link_orb_command(lu, cmd);



	return 0;