On Thu, 20 Jul 2000, daniel sheltraw wrote:
> module. If I execute the user-space program as root all works fine but if I
> execute it as a user the shared-memory allocation fails. What do I need to
> do to get this to work?
Create new group "memaccess"
#if you are using mbuff do as root:
chgrp memaccess /dev/mbuff
chmod g+rw /dev/mbuff
#else
#if you get shared memory by mmapping /dev/mem, do as root:
mknod /dev/memmap c 1 2
chgrp memaccess /dev/memmap
chmod g+rw /dev/memmap
change your program to use /dev/memmap instead of /dev/mem
#else
#error I do not know how do you get shared memory
#endif
#endif
add all users which should be able to mmap memory to "memaccess" group. After
new log-in it should work.
Best regards,
--
Tomek
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