Messages in this thread | | | Date | Sun, 09 Feb 2003 02:50:55 +0100 | From | Jerome de Vivie <> | Subject | Re: mmap inside kernel memory. |
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Rik van Riel wrote: > > On Sun, 9 Feb 2003, Jerome de Vivie wrote: > > > "mmap" seems to be design for mapping file or device inside a process > > memory. Is it possible to map a file into the kernel virtual memory ? > > In theory yes (using vmalloc space), but you really don't want to.
Yes, it's very tricky ! I have (naïvly) try this:
vaddr=vmalloc(len); do_mmap(file ,kvaddr ,len ,PROT_READ|PROT_WRITE ,MAP_FIXED|MAP_PRIVATE ,0);
Here, do_mmap check if the addresse match inside current process and return me -ENOMEM. Are there others functions which i could use to associate this file and a vmalloc'ed space ?
j.
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