Function __syscall_poll_nonblocking

system/lib/wasmfs/syscalls.cpp:1443–1445

libc routes zero-timeout poll() calls here (see musl's poll.c). WasmFS's __syscall_poll never blocks, so the zero-timeout probe is the same call.

// libc routes zero-timeout poll() calls here (see musl's poll.c). WasmFS's
// __syscall_poll never blocks, so the zero-timeout probe is the same call.
int __syscall_poll_nonblocking(struct pollfd* fds, nfds_t nfds) {
  return __syscall_poll(fds, nfds, 0);
}

int __syscall_fallocate(int fd, int mode, off_t offset, off_t len) {
  assert(mode == 0); // TODO, but other modes were never supported in the old FS