Function wasmfs_create_file

system/lib/wasmfs/syscalls.cpp:569–573

This function is exposed to users and allows users to create a file in a specific backend. An fd to an open file is returned.

// This function is exposed to users and allows users to create a file in a
// specific backend. An fd to an open file is returned.
int wasmfs_create_file(const char* pathname, mode_t mode, backend_t backend) {
  static_assert(std::is_same_v<decltype(doOpen(0, 0, 0, 0)), unsigned int>,
                "unexpected conversion from result of doOpen to int");
  return doOpen(path::parseParent(pathname), O_CREAT | O_EXCL, mode, backend);
}

// TODO: Test this with non-AT_FDCWD values.
int __syscall_openat(int dirfd, const char* path, int flags, ...) {