diff options
| author | Robert Foss <robert.foss@collabora.com> | 2017-01-02 05:07:10 -0500 |
|---|---|---|
| committer | Robert Foss <robert.foss@collabora.com> | 2017-01-02 05:27:56 -0500 |
| commit | 091a452489ac184bbc4d0d23ce6a255abc0f4631 (patch) | |
| tree | c68ac3d087937d9397783af974f7f708c9d37e39 /lib/ioctl_wrappers.h | |
| parent | dbee0832c586596d60ae1dc3eef92e3638af94d3 (diff) | |
lib/ioctl_wrappers.h: Add to_user_pointer() helper
Add to_user_pointer() helper function which helps cast
pointers properly when being used with ioctls.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'lib/ioctl_wrappers.h')
| -rw-r--r-- | lib/ioctl_wrappers.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h index 26270975..2ac57f47 100644 --- a/lib/ioctl_wrappers.h +++ b/lib/ioctl_wrappers.h @@ -239,4 +239,15 @@ int __kms_addfb(int fd, uint32_t handle, uint32_t width, uint32_t height, uint32_t stride, uint32_t pixel_format, uint64_t modifier, uint32_t flags, uint32_t *buf_id); +/** + * to_user_pointer: + * + * Makes sure that pointer on 32 and 64-bit systems + * are casted properly for being sent through an ioctl. + */ +inline uint64_t to_user_pointer(void *ptr) +{ + return (uint64_t)(uintptr_t) ptr; +} + #endif /* IOCTL_WRAPPERS_H */ |