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author | Arnd Bergmann <arnd@arndb.de> | 2007-10-09 13:23:56 +0200 |
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committer | Jens Axboe <axboe@carl.home.kernel.dk> | 2007-10-10 09:26:00 +0200 |
commit | b3087cc4f31a66c8c7b63419e913ed9d34145f10 (patch) | |
tree | fa597c0aebee961d086a0a40373b925eb33d73ab /block | |
parent | compat_ioctl: move BLKPG handling to block/compat_ioctl.c (diff) | |
download | linux-b3087cc4f31a66c8c7b63419e913ed9d34145f10.tar.xz linux-b3087cc4f31a66c8c7b63419e913ed9d34145f10.zip |
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')
-rw-r--r-- | block/compat_ioctl.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 44807d38b1e7..92b3e8d07ca6 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. |