Handle more Linux ioctls; from NetBSD. ok deraadt@

1 files changed, 133 insertions, 0 deletions

diff --git a/sys/compat/linux/linux_blkio.c b/sys/compat/linux/linux_blkio.c
new file mode 100644
index 00000000000..41e9e7c8817
--- /dev/null
+++ b/sys/compat/linux/linux_blkio.c
@@ -0,0 +1,133 @@
+/*	$OpenBSD: linux_blkio.c,v 1.1 2001/04/09 06:53:44 tholo Exp $	*/
+/*	$NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv Exp $	*/
+
+/*
+ * Copyright (c) 2001 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Frank van der Linden for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed for the NetBSD Project by
+ *      Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/mount.h>
+#include <sys/proc.h>
+#include <sys/disklabel.h>
+
+#include <sys/syscallargs.h>
+
+#include <compat/linux/linux_types.h>
+#include <compat/linux/linux_ioctl.h>
+#include <compat/linux/linux_signal.h>
+#include <compat/linux/linux_util.h>
+#include <compat/linux/linux_blkio.h>
+
+#include <compat/linux/linux_syscallargs.h>
+
+int
+linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap,
+		  register_t *retval)
+{
+	u_long com;
+	long size;
+	int error;
+	struct filedesc *fdp;
+	struct file *fp;
+	int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *));
+	struct partinfo partp;
+	struct disklabel label;
+
+        fdp = p->p_fd;
+#if 1
+	if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
+	    (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
+		return (EBADF);
+#else
+	if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
+	    (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
+	    (fp->f_iflags & FIF_WANTCLOSE) != 0)
+		return (EBADF);
+
+	FILE_USE(fp);
+#endif
+	error = 0;
+	ioctlf = fp->f_ops->fo_ioctl;
+	com = SCARG(uap, com);
+
+	switch (com) {
+	case LINUX_BLKGETSIZE:
+		/*
+		 * Try to get the partition size of this device. If that
+		 * fails, it may be a disk without label; try to get
+		 * the default label and compute the size from it.
+		 */
+		error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p);
+		if (error != 0) {
+			error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
+			if (error != 0)
+				break;
+			size = label.d_nsectors * label.d_ntracks *
+			    label.d_ncylinders;
+		} else
+			size = partp.part->p_size;
+		error = copyout(&size, SCARG(uap, data), sizeof size);
+		break;
+	case LINUX_BLKSECTGET:
+		error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
+		if (error != 0)
+			break;
+		error = copyout(&label.d_secsize, SCARG(uap, data),
+		    sizeof label.d_secsize);
+		break;
+	case LINUX_BLKROSET:
+	case LINUX_BLKROGET:
+	case LINUX_BLKRRPART:
+	case LINUX_BLKFLSBUF:
+	case LINUX_BLKRASET:
+	case LINUX_BLKRAGET:
+	case LINUX_BLKFRASET:
+	case LINUX_BLKFRAGET:
+	case LINUX_BLKSECTSET:
+	case LINUX_BLKSSZGET:
+	case LINUX_BLKPG:
+	default:
+		error = ENOTTY;
+	}
+
+#ifdef notyet
+	FILE_UNUSE(fp, p);
+#endif
+
+	return error;
+}