what about this? http://user-mode-linux.sourceforge.net/iomem.html
Olivier Crameri wrote: > Hi, > > I'm currently working on a project in which we are using UML to access > the host os and perform some operations. > More precisely, we would like to have a system call in UML that parses > a file in the host os. > > Since the UML kernel is a host process, I naively thought that I could > use regular C directly. Indeed, I was able to create my system call, > and then have some other C files compiled using host os headers such > as <stdio.h> and <stdlib.h> by putting them in the USER_OBJS list of > the Makefile. > > Unfortunately, I'm having some weird issues that I can't really > understand. I can read the file using fread, but only in a buffer that > I allocated using um_kmalloc. If I use a buffer allocated by malloc, > the fread fails. Then, even if I replace all my mallocs by > um_kmallocs, some libc functions (such as sscanf) don't seem to work > properly. I guess I'm missing something, but I can't figure out what. > > If anyone of you can help me, I'd really appreciate, > > With best regards, > > Olivier > > P.S.: I'm using 2.6.15.6 with the latest 2.6.15 patch and the guest > kernel runs in skas3 mode. > > > ------------------------------------------------------- > This SF.Net email is sponsored by xPML, a groundbreaking scripting > language > that extends applications into web and mobile media. Attend the live > webcast > and join the prime developer group breaking into this new coding > territory! > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 > _______________________________________________ > User-mode-linux-devel mailing list > User-mode-linux-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
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