- Do not write functions that clobber call-by-reference variables on
failure. Use temporary variables for these cases and change the
passed in variables only on success.
+
+- When you allocate a file descriptor, it should be made O_CLOEXEC
+ right from the beginning, as none of our files should leak to forked
+ binaries by default. Hence, whenever you open a file, O_CLOEXEC must
+ be specified, right from the beginning.