How does __user works?
gd1100 at gmail.com
Sat Jan 19 11:34:15 EST 2013
How does __user macro works? I know it is defined in
# define __user. __attribute__((noderef, address_space(1)))
I could write thesse macros defs too but my real problem is: what does this
stuff do? Some functions use this macro and other does not. For example
compat_do_execve (from include/linux/comtap.h) use normal pointer named
filename and second pointer named argv as __user pointer. Why does argv
needs __user but filename not?
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