From cd5bedea5e5cca50e28571a160a15a7816e8cd09 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 27 Aug 2018 15:56:21 -0400 Subject: [PATCH] media: dvb: fix compat ioctl translation [ Upstream commit 1ccbeeb888ac33627d91f1ccf0b84ef3bcadef24 ] The VIDEO_GET_EVENT and VIDEO_STILLPICTURE was added back in 2005 but it never worked because the command number is wrong. Using the right command number means we have a better chance of them actually doing the right thing, though clearly nobody has ever tried it successfully. I noticed these while auditing the remaining users of compat_time_t for y2038 bugs. This one is fine in that regard, it just never did anything. Fixes: 6e87abd0b8cb ("[DVB]: Add compat ioctl handling.") Signed-off-by: Arnd Bergmann Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- fs/compat_ioctl.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index ea52b98b39fa..033e8e6aabb7 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -161,6 +161,7 @@ struct compat_video_event { unsigned int frame_rate; } u; }; +#define VIDEO_GET_EVENT32 _IOR('o', 28, struct compat_video_event) static int do_video_get_event(struct file *file, unsigned int cmd, struct compat_video_event __user *up) @@ -172,7 +173,7 @@ static int do_video_get_event(struct file *file, if (kevent == NULL) return -EFAULT; - err = do_ioctl(file, cmd, (unsigned long)kevent); + err = do_ioctl(file, VIDEO_GET_EVENT, (unsigned long)kevent); if (!err) { err = convert_in_user(&kevent->type, &up->type); err |= convert_in_user(&kevent->timestamp, &up->timestamp); @@ -191,6 +192,7 @@ struct compat_video_still_picture { compat_uptr_t iFrame; int32_t size; }; +#define VIDEO_STILLPICTURE32 _IOW('o', 30, struct compat_video_still_picture) static int do_video_stillpicture(struct file *file, unsigned int cmd, struct compat_video_still_picture __user *up) @@ -213,7 +215,7 @@ static int do_video_stillpicture(struct file *file, if (err) return -EFAULT; - err = do_ioctl(file, cmd, (unsigned long) up_native); + err = do_ioctl(file, VIDEO_STILLPICTURE, (unsigned long) up_native); return err; } @@ -1476,9 +1478,9 @@ static long do_ioctl_trans(unsigned int cmd, return rtc_ioctl(file, cmd, argp); /* dvb */ - case VIDEO_GET_EVENT: + case VIDEO_GET_EVENT32: return do_video_get_event(file, cmd, argp); - case VIDEO_STILLPICTURE: + case VIDEO_STILLPICTURE32: return do_video_stillpicture(file, cmd, argp); case VIDEO_SET_SPU_PALETTE: return do_video_set_spu_palette(file, cmd, argp); -- 2.20.1