Messages in this thread | | | Date | Fri, 12 Jan 2007 11:59:39 +0100 (MET) | From | Jan Engelhardt <> | Subject | Re: How can I create or read/write a file in linux device driver? |
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On Jan 12 2007 11:54, Jesper Juhl wrote: >> >> The article does it the bad way. IMHO filp_open() and >> vfs_read/vfs_write() are much less problematic wrt. to userspace. >> FWIW see >> ftp://ftp-1.gwdg.de/pub/linux/misc/suser-jengelh/kernel/quad_dsp-1.5.1.tar.bz2 > > There is no good way. You simply should NOT do it.
I never said there is a good way, just that some are better than others ;-) As for quad_dsp, well, the reason why it's done in kernel-space is because userspace wrapping with LD_PRELOAD does not always work, esp. with statically compiled apps.
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