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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
commitb3087cc4f31a66c8c7b63419e913ed9d34145f10 (patch)
treefa597c0aebee961d086a0a40373b925eb33d73ab /block/compat_ioctl.c
parent18cf7f8723d913ce02bea43e468bebdd07bc880c (diff)
downloadvexpress-lsk-b3087cc4f31a66c8c7b63419e913ed9d34145f10.tar.gz
compat_ioctl: move cdrom handlers to block/compat_ioctl.c
These are shared by all cd-rom drivers and should have common handlers. Do slight cosmetic cleanups in the process. 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.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 44807d38b1e..92b3e8d07ca 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -92,6 +92,84 @@ static int compat_hdio_ioctl(struct inode *inode, struct file *file,
return error;
}
+struct compat_cdrom_read_audio {
+ union cdrom_addr addr;
+ u8 addr_format;
+ compat_int_t nframes;
+ compat_caddr_t buf;
+};
+
+struct compat_cdrom_generic_command {
+ unsigned char cmd[CDROM_PACKET_SIZE];
+ compat_caddr_t buffer;
+ compat_uint_t buflen;
+ compat_int_t stat;
+ compat_caddr_t sense;
+ unsigned char data_direction;
+ compat_int_t quiet;
+ compat_int_t timeout;
+ compat_caddr_t reserved[1];
+};
+
+static int compat_cdrom_read_audio(struct inode *inode, struct file *file,
+ struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+ struct cdrom_read_audio __user *cdread_audio;
+ struct compat_cdrom_read_audio __user *cdread_audio32;
+ __u32 data;
+ void __user *datap;
+
+ cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
+ cdread_audio32 = compat_ptr(arg);
+
+ if (copy_in_user(&cdread_audio->addr,
+ &cdread_audio32->addr,
+ (sizeof(*cdread_audio32) -
+ sizeof(compat_caddr_t))))
+ return -EFAULT;
+
+ if (get_user(data, &cdread_audio32->buf))
+ return -EFAULT;
+ datap = compat_ptr(data);
+ if (put_user(datap, &cdread_audio->buf))
+ return -EFAULT;
+
+ return blkdev_driver_ioctl(inode, file, disk, cmd,
+ (unsigned long)cdread_audio);
+}
+
+static int compat_cdrom_generic_command(struct inode *inode, struct file *file,
+ struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+ struct cdrom_generic_command __user *cgc;
+ struct compat_cdrom_generic_command __user *cgc32;
+ u32 data;
+ unsigned char dir;
+ int itmp;
+
+ cgc = compat_alloc_user_space(sizeof(*cgc));
+ cgc32 = compat_ptr(arg);
+
+ if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
+ get_user(data, &cgc32->buffer) ||
+ put_user(compat_ptr(data), &cgc->buffer) ||
+ copy_in_user(&cgc->buflen, &cgc32->buflen,
+ (sizeof(unsigned int) + sizeof(int))) ||
+ get_user(data, &cgc32->sense) ||
+ put_user(compat_ptr(data), &cgc->sense) ||
+ get_user(dir, &cgc32->data_direction) ||
+ put_user(dir, &cgc->data_direction) ||
+ get_user(itmp, &cgc32->quiet) ||
+ put_user(itmp, &cgc->quiet) ||
+ get_user(itmp, &cgc32->timeout) ||
+ put_user(itmp, &cgc->timeout) ||
+ get_user(data, &cgc32->reserved[0]) ||
+ put_user(compat_ptr(data), &cgc->reserved[0]))
+ return -EFAULT;
+
+ return blkdev_driver_ioctl(inode, file, disk, cmd, (unsigned long)cgc);
+}
+
struct compat_blkpg_ioctl_arg {
compat_int_t op;
compat_int_t flags;
@@ -190,6 +268,11 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
case HDIO_GET_ADDRESS:
case HDIO_GET_BUSSTATE:
return compat_hdio_ioctl(inode, file, disk, cmd, arg);
+ case CDROMREADAUDIO:
+ return compat_cdrom_read_audio(inode, file, disk, cmd, arg);
+ case CDROM_SEND_PACKET:
+ return compat_cdrom_generic_command(inode, file, disk, cmd, arg);
+
/*
* No handler required for the ones below, we just need to
* convert arg to a 64 bit pointer.