25a2902c04
needed for the last 10 years. Far too much of the internal API is exposed, and every small adjustment causes applications to stop working. To kick this off, bump the API version to 0x17 as should have been done with r246713, but add shims to compensate. Thanks to the shims, there should be no visible change in application behavior. I have plans to do a significant overhaul of the API to harnen it for the future, but until then, I welcome others to add shims for older versions of the API. Obtained from: Netflix
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*-
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* CAM ioctl compatibility shims
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*
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* Copyright (c) 2013 Scott Long
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/fcntl.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/kthread.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_compat.h>
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#include <cam/scsi/scsi_pass.h>
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#include "opt_cam.h"
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int
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cam_compat_ioctl(struct cdev *dev, u_long *cmd, caddr_t *addr, int *flag, struct thread *td)
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{
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int error;
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switch (*cmd) {
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case CAMIOCOMMAND_0x16:
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{
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union ccb *ccb;
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ccb = (union ccb *)*addr;
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if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS_0x16) {
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ccb->ccb_h.flags &= ~CAM_SG_LIST_PHYS_0x16;
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ccb->ccb_h.flags |= CAM_DATA_SG_PADDR;
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}
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if (ccb->ccb_h.flags & CAM_DATA_PHYS_0x16) {
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ccb->ccb_h.flags &= ~CAM_DATA_PHYS_0x16;
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ccb->ccb_h.flags |= CAM_DATA_PADDR;
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}
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if (ccb->ccb_h.flags & CAM_SCATTER_VALID_0x16) {
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ccb->ccb_h.flags &= CAM_SCATTER_VALID_0x16;
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ccb->ccb_h.flags |= CAM_DATA_SG;
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}
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*cmd = CAMIOCOMMAND;
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error = EAGAIN;
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break;
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}
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case CAMGETPASSTHRU_0x16:
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*cmd = CAMGETPASSTHRU;
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error = EAGAIN;
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break;
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default:
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error = ENOTTY;
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}
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return (error);
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}
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