fusl/src/fcntl/posix_fallocate.c

#include <fcntl.h>
#include "syscall.h"
#include "libc.h"

int posix_fallocate(int fd, off_t base, off_t len) {
  return -__syscall(SYS_fallocate, fd, 0, __SYSCALL_LL_E(base),
                    __SYSCALL_LL_E(len));
}

LFS64(posix_fallocate);