Messages in this thread |  | | Date | Fri, 23 May 2003 11:32:07 +0200 | From | Michael Hunold <> | Subject | [RFC][2.5] generic_usercopy() function |
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Hello all,
especially the Video4Linux-driver rely intensively on the video_usercopy() function, which handles the copying of userspace arguments of ioctls with a simply callback mechanism.
Recently the dvb-core has been added which needs the same function. Because of the fact that the core is independent of Video4Linux, the code was duplicated to a dvb_usercopy() function.
In order to prevent this code duplication, introducing a generic_usercopy() function to lib/ is one possibilty.
The appended 4 patches do the following:
01-introduce.diff: - remove video_usercopy() from videodev.c - add generic_usercopy() to "lib/usecopy.c" and update the build system
02-video.diff: - change all users of video_usercopy() to use generic_usercopy() instead
03-radio.diff: - change all users of video_usercopy() to use generic_usercopy() instead
04-dvb.diff - remove dvb_usercopy() from the dvb core and fix it to use generic_usercopy() instead.
The diffs are against 2.5.69.
Comments are very appreciated. 8-) Is there a possibility to get this into the kernel?
CU Michael.
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