6 extern int __weak posix_memalign(void **ptr, size_t align, size_t size);
7 extern int __weak posix_fallocate(int fd, off_t offset, off_t len);
8 extern int __weak inet_aton(const char *cp, struct in_addr *inp);
9 extern int __weak clock_gettime(clockid_t clk_id, struct timespec *ts);