I hope I'm not splitting hairs here, but as I was going through the code for ' /dev/random<https://android.googlesource.com/kernel/msm.git/+/eaf36994a3992b8f918c18e4f7411e8b2320a35f/drivers/char/random.c> ' (in this instance), I noticed that ' unsigned long ' is being used in lieu of, say, ' size_t '. For example, in the following code --
1. unsigned long 2. randomize_range(unsigned long start, unsigned long end, unsigned longlen ) 3. { 4. unsigned long range = end - len - start; 5. 6. if (end <= start + len) 7. return 0; 8. return PAGE_ALIGN(get_random_int() % range + start); 9. } -- would it not be more practical to use size_t as the type conveys context better (though, I admit this is subjective) ? On another note, since get_random_int() returns 'unsigned int' and the PAGE_ALIGN macro uses typeof() I know there is at least one explicit casting done via PAGE_ALIGN, but I am unsure as to why get_random_int() itself is not being explicitly casted. This, I think, is the way it makes most sense to me: size_t randomize_range(size_t start, size_t end, size_t len) { size_t range = end - len - start; if (end <= start + len) return 0; return PAGE_ALIGN((((size_t)get_random_int()) % range) + start); } Am I gravely mistaken? I'm no expert by any means, so any insight would be much appreciated. Thanks. -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel