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authorArnd Bergmann <arnd@arndb.de>2007-10-09 13:23:56 +0200
committerJens Axboe <axboe@carl.home.kernel.dk>2007-10-10 09:26:00 +0200
commit18cf7f8723d913ce02bea43e468bebdd07bc880c (patch)
treea76588ab76db68fcb289babb1770e2fe13a6bd42 /block/compat_ioctl.c
parent9617db085c119879cd371e3212806a15596e121a (diff)
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compat_ioctl: move BLKPG handling to block/compat_ioctl.c
BLKPG is common to all block devices, so it should be handled by common code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/compat_ioctl.c')
-rw-r--r--block/compat_ioctl.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 5c6dafaad93..44807d38b1e 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -92,6 +92,35 @@ static int compat_hdio_ioctl(struct inode *inode, struct file *file,
return error;
}
+struct compat_blkpg_ioctl_arg {
+ compat_int_t op;
+ compat_int_t flags;
+ compat_int_t datalen;
+ compat_caddr_t data;
+};
+
+static int compat_blkpg_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, struct compat_blkpg_ioctl_arg __user *ua32)
+{
+ struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a));
+ compat_caddr_t udata;
+ compat_int_t n;
+ int err;
+
+ err = get_user(n, &ua32->op);
+ err |= put_user(n, &a->op);
+ err |= get_user(n, &ua32->flags);
+ err |= put_user(n, &a->flags);
+ err |= get_user(n, &ua32->datalen);
+ err |= put_user(n, &a->datalen);
+ err |= get_user(udata, &ua32->data);
+ err |= put_user(compat_ptr(udata), &a->data);
+ if (err)
+ return err;
+
+ return blkdev_ioctl(inode, file, cmd, (unsigned long)a);
+}
+
#define BLKBSZGET_32 _IOR(0x12, 112, int)
#define BLKBSZSET_32 _IOW(0x12, 113, int)
#define BLKGETSIZE64_32 _IOR(0x12, 114, int)
@@ -348,6 +377,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKBSZSET_32:
return blkdev_ioctl(inode, file, BLKBSZSET,
(unsigned long)compat_ptr(arg));
+ case BLKPG:
+ return compat_blkpg_ioctl(inode, file, cmd, compat_ptr(arg));
}
lock_kernel();