From 18cf7f8723d913ce02bea43e468bebdd07bc880c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 9 Oct 2007 13:23:56 +0200 Subject: 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 Signed-off-by: Jens Axboe --- block/compat_ioctl.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'block/compat_ioctl.c') diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 5c6dafaad938..44807d38b1e7 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(); -- cgit v1.2.3