Hi, If I'm given a particular address, how do I test whether that address is from userspace or from kernel space? I need to make these decisions from either inside a kernel module or a userspace program. The idea is I use memcpy() in the user-user version, copy_from/to_user in the kernel-kernel version, and prohibit the others. Is it safe to test the address against PAGE_OFFSET in the module? I agree it could be non-portable in userspace if people have changed their PAGE_OFFSET in the kernels they are running. I'm using 2.4.18 vanilla from ftp.kernel.org Thanks and regards, Rock PS: Please CC me, I'm not on the list. __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
