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authorArnd Bergmann <arnd@arndb.de>2018-08-27 22:56:21 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2018-09-12 18:00:51 +0300
commit1ccbeeb888ac33627d91f1ccf0b84ef3bcadef24 (patch)
tree2a6d42ea8c1012de47c980ba15ef129444fbc7c5 /fs/compat_ioctl.c
parentd9d94479911c11c65b00f6ffb193eec9c8b41721 (diff)
downloadlinux-1ccbeeb888ac33627d91f1ccf0b84ef3bcadef24.tar.xz
media: dvb: fix compat ioctl translation
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 <arnd@arndb.de> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'fs/compat_ioctl.c')
-rw-r--r--fs/compat_ioctl.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index a9b00942e87d..0c46ce224590 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -141,6 +141,7 @@ 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)
@@ -152,7 +153,7 @@ 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);
@@ -171,6 +172,7 @@ 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)
@@ -193,7 +195,7 @@ 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;
}
@@ -1305,9 +1307,9 @@ 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);
}