X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=block%2Fioctl.c;h=e06dbe9bc8588ac7aa6eb96b3378d16bdbaa9816;hb=ef2e58ea6b9931c3a4816c66593da49bb20e3b24;hp=6e278474f9a8c1f0dcb70a560031fac870eb3220;hpb=e82b3aec8d508d2a925a4c766e97f16b7c4dfb1b;p=powerpc.git

diff --git a/block/ioctl.c b/block/ioctl.c
index 6e278474f9..e06dbe9bc8 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -1,9 +1,11 @@
-#include <linux/sched.h>		/* for capable() */
+#include <linux/capability.h>
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
+#include <linux/hdreg.h>
 #include <linux/backing-dev.h>
 #include <linux/buffer_head.h>
 #include <linux/smp_lock.h>
+#include <linux/blktrace_api.h>
 #include <asm/uaccess.h>
 
 static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user *arg)
@@ -41,9 +43,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 					return -EINVAL;
 			}
 			/* partition number in use? */
-			down(&bdev->bd_sem);
+			mutex_lock(&bdev->bd_mutex);
 			if (disk->part[part - 1]) {
-				up(&bdev->bd_sem);
+				mutex_unlock(&bdev->bd_mutex);
 				return -EBUSY;
 			}
 			/* overlap? */
@@ -54,13 +56,13 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 					continue;
 				if (!(start+length <= s->start_sect ||
 				      start >= s->start_sect + s->nr_sects)) {
-					up(&bdev->bd_sem);
+					mutex_unlock(&bdev->bd_mutex);
 					return -EBUSY;
 				}
 			}
 			/* all seems OK */
-			add_partition(disk, part, start, length);
-			up(&bdev->bd_sem);
+			add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
+			mutex_unlock(&bdev->bd_mutex);
 			return 0;
 		case BLKPG_DEL_PARTITION:
 			if (!disk->part[part-1])
@@ -70,9 +72,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 			bdevp = bdget_disk(disk, part);
 			if (!bdevp)
 				return -ENOMEM;
-			down(&bdevp->bd_sem);
+			mutex_lock(&bdevp->bd_mutex);
 			if (bdevp->bd_openers) {
-				up(&bdevp->bd_sem);
+				mutex_unlock(&bdevp->bd_mutex);
 				bdput(bdevp);
 				return -EBUSY;
 			}
@@ -80,10 +82,10 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 			fsync_bdev(bdevp);
 			invalidate_bdev(bdevp, 0);
 
-			down(&bdev->bd_sem);
+			mutex_lock_nested(&bdev->bd_mutex, 1);
 			delete_partition(disk, part);
-			up(&bdev->bd_sem);
-			up(&bdevp->bd_sem);
+			mutex_unlock(&bdev->bd_mutex);
+			mutex_unlock(&bdevp->bd_mutex);
 			bdput(bdevp);
 
 			return 0;
@@ -101,10 +103,10 @@ static int blkdev_reread_part(struct block_device *bdev)
 		return -EINVAL;
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
-	if (down_trylock(&bdev->bd_sem))
+	if (!mutex_trylock(&bdev->bd_mutex))
 		return -EBUSY;
 	res = rescan_partitions(disk, bdev);
-	up(&bdev->bd_sem);
+	mutex_unlock(&bdev->bd_mutex);
 	return res;
 }
 
@@ -188,12 +190,17 @@ static int blkdev_locked_ioctl(struct file *file, struct block_device *bdev,
 		return put_ulong(arg, bdev->bd_inode->i_size >> 9);
 	case BLKGETSIZE64:
 		return put_u64(arg, bdev->bd_inode->i_size);
+	case BLKTRACESTART:
+	case BLKTRACESTOP:
+	case BLKTRACESETUP:
+	case BLKTRACETEARDOWN:
+		return blk_trace_ioctl(bdev, cmd, (char __user *) arg);
 	}
 	return -ENOIOCTLCMD;
 }
 
-static int blkdev_driver_ioctl(struct inode *inode, struct file *file,
-		struct gendisk *disk, unsigned cmd, unsigned long arg)
+int blkdev_driver_ioctl(struct inode *inode, struct file *file,
+			struct gendisk *disk, unsigned cmd, unsigned long arg)
 {
 	int ret;
 	if (disk->fops->unlocked_ioctl)
@@ -208,6 +215,7 @@ static int blkdev_driver_ioctl(struct inode *inode, struct file *file,
 
 	return -ENOTTY;
 }
+EXPORT_SYMBOL_GPL(blkdev_driver_ioctl);
 
 int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
 			unsigned long arg)
@@ -245,6 +253,27 @@ int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
 		set_device_ro(bdev, n);
 		unlock_kernel();
 		return 0;
+	case HDIO_GETGEO: {
+		struct hd_geometry geo;
+
+		if (!arg)
+			return -EINVAL;
+		if (!disk->fops->getgeo)
+			return -ENOTTY;
+
+		/*
+		 * We need to set the startsect first, the driver may
+		 * want to override it.
+		 */
+		geo.start = get_start_sect(bdev);
+		ret = disk->fops->getgeo(bdev, &geo);
+		if (ret)
+			return ret;
+		if (copy_to_user((struct hd_geometry __user *)arg, &geo,
+					sizeof(geo)))
+			return -EFAULT;
+		return 0;
+	}
 	}
 
 	lock_kernel();
@@ -261,7 +290,7 @@ int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
    ENOIOCTLCMD for unknown ioctls. */
 long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {
-	struct block_device *bdev = file->f_dentry->d_inode->i_bdev;
+	struct block_device *bdev = file->f_path.dentry->d_inode->i_bdev;
 	struct gendisk *disk = bdev->bd_disk;
 	int ret = -ENOIOCTLCMD;
 	if (disk->fops->compat_ioctl) {