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| author | Arnd Bergmann <arnd@arndb.de> | 2019-12-09 18:33:16 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2020-01-03 11:33:11 +0300 |
| commit | ab8bc5417d8cf62a5fc515737b391689573e7fb3 (patch) | |
| tree | 4101c5e66210bb085e2deae013e12998d7f370e0 /drivers/block/pktcdvd.c | |
| parent | 8f8f562038c188046d683e2b650f7731739869dd (diff) | |
| download | linux-ab8bc5417d8cf62a5fc515737b391689573e7fb3.tar.xz | |
compat_ioctl: cdrom: handle CDROM_LAST_WRITTEN
This is the only ioctl command that does not have a proper
compat handler. Making the normal implementation do the
right thing is actually very simply, so just do that by
using an in_compat_syscall() check to avoid the special
case in the pkcdvd driver.
Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/block/pktcdvd.c')
| -rw-r--r-- | drivers/block/pktcdvd.c | 24 |
1 files changed, 1 insertions, 23 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index ab4d3be4b646..5f970a7d32c0 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2663,26 +2663,6 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, return ret; } -#ifdef CONFIG_COMPAT -static int pkt_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - /* compatible */ - case CDROMEJECT: - case CDROMMULTISESSION: - case CDROMREADTOCENTRY: - case CDROM_SEND_PACKET: /* compat mode handled in scsi_cmd_ioctl */ - case SCSI_IOCTL_SEND_COMMAND: - return pkt_ioctl(bdev, mode, cmd, (unsigned long)compat_ptr(arg)); - - /* FIXME: no handler so far */ - default: - case CDROM_LAST_WRITTEN: - return -ENOIOCTLCMD; - } -} -#endif - static unsigned int pkt_check_events(struct gendisk *disk, unsigned int clearing) { @@ -2704,9 +2684,7 @@ static const struct block_device_operations pktcdvd_ops = { .open = pkt_open, .release = pkt_close, .ioctl = pkt_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = pkt_compat_ioctl, -#endif + .compat_ioctl = blkdev_compat_ptr_ioctl, .check_events = pkt_check_events, }; |