Annotation of sys/compat/linux/linux_blkio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: linux_blkio.c,v 1.7 2007/06/06 17:15:13 deraadt Exp $ */
! 2: /* $NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Frank van der Linden for Wasabi Systems, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed for the NetBSD Project by
! 21: * Wasabi Systems, Inc.
! 22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
! 23: * or promote products derived from this software without specific prior
! 24: * written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
! 30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: * POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38:
! 39: #include <sys/param.h>
! 40: #include <sys/systm.h>
! 41: #include <sys/ioctl.h>
! 42: #include <sys/file.h>
! 43: #include <sys/filedesc.h>
! 44: #include <sys/mount.h>
! 45: #include <sys/proc.h>
! 46: #include <sys/disklabel.h>
! 47:
! 48: #include <sys/syscallargs.h>
! 49:
! 50: #include <compat/linux/linux_types.h>
! 51: #include <compat/linux/linux_ioctl.h>
! 52: #include <compat/linux/linux_signal.h>
! 53: #include <compat/linux/linux_util.h>
! 54: #include <compat/linux/linux_blkio.h>
! 55:
! 56: #include <compat/linux/linux_syscallargs.h>
! 57:
! 58: int
! 59: linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap,
! 60: register_t *retval)
! 61: {
! 62: u_long com;
! 63: long size;
! 64: int error;
! 65: struct filedesc *fdp;
! 66: struct file *fp;
! 67: int (*ioctlf)(struct file *, u_long, caddr_t, struct proc *);
! 68: struct partinfo partp;
! 69: struct disklabel label;
! 70:
! 71: fdp = p->p_fd;
! 72: if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
! 73: return (EBADF);
! 74: FREF(fp);
! 75: error = 0;
! 76: ioctlf = fp->f_ops->fo_ioctl;
! 77: com = SCARG(uap, com);
! 78:
! 79: switch (com) {
! 80: case LINUX_BLKGETSIZE:
! 81: /*
! 82: * Try to get the partition size of this device. If that
! 83: * fails, it may be a disk without label; try to get
! 84: * the default label and compute the size from it.
! 85: */
! 86: error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p);
! 87: if (error != 0) {
! 88: error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
! 89: if (error != 0)
! 90: break;
! 91: size = label.d_nsectors * label.d_ntracks *
! 92: label.d_ncylinders;
! 93: } else
! 94: /* XXX ignores > 32bit blocks */
! 95: size = DL_GETPSIZE(partp.part);
! 96: error = copyout(&size, SCARG(uap, data), sizeof size);
! 97: break;
! 98: case LINUX_BLKSECTGET:
! 99: error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
! 100: if (error != 0)
! 101: break;
! 102: error = copyout(&label.d_secsize, SCARG(uap, data),
! 103: sizeof label.d_secsize);
! 104: break;
! 105: case LINUX_BLKROSET:
! 106: case LINUX_BLKROGET:
! 107: case LINUX_BLKRRPART:
! 108: case LINUX_BLKFLSBUF:
! 109: case LINUX_BLKRASET:
! 110: case LINUX_BLKRAGET:
! 111: case LINUX_BLKFRASET:
! 112: case LINUX_BLKFRAGET:
! 113: case LINUX_BLKSECTSET:
! 114: case LINUX_BLKSSZGET:
! 115: case LINUX_BLKPG:
! 116: default:
! 117: error = ENOTTY;
! 118: }
! 119:
! 120: FRELE(fp);
! 121: return error;
! 122: }
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