Method _do_setattr

src/client/Client.cc:8405–8830

}

int Client::_do_setattr(Inode *in, struct ceph_statx *stx, int mask,
			const UserPerm& perms, InodeRef *inp,
			std::vector<uint8_t>* aux)
{
  int issued = in->caps_issued();
  union ceph_mds_request_args args;
  bool kill_sguid = false;
  int inode_drop = 0;
  size_t auxsize = 0;
  filepath path;
  MetaRequest *req;
  std::vector<uint8_t> alt_aux;
  std::vector<uint8_t> *paux = aux;
  int setting_smaller = 0;
  bufferlist lastblockbl;

  if (aux)
    auxsize = aux->size();

  ldout(cct, 10) << __func__ << " mask " << mask << " issued " <<
    ccap_string(issued) <<  " aux size " << auxsize << " perms " << perms << dendl;

  if (in->snapid != CEPH_NOSNAP) {
    return -EROFS;
  }
  if ((mask & CEPH_SETATTR_SIZE) &&
      (uint64_t)stx->stx_size > in->effective_size() &&
      is_quota_bytes_exceeded(in, (uint64_t)stx->stx_size - in->effective_size(),
			      perms)) {
    return -EDQUOT;
  }

  // Can't set fscrypt_auth and file at the same time!
  if ((mask & (CEPH_SETATTR_FSCRYPT_AUTH|CEPH_SETATTR_FSCRYPT_FILE)) ==
      (CEPH_SETATTR_FSCRYPT_AUTH|CEPH_SETATTR_FSCRYPT_FILE))
    return -EINVAL;

  if (!aux && (mask & (CEPH_SETATTR_FSCRYPT_AUTH|CEPH_SETATTR_FSCRYPT_FILE)))
    return -EINVAL;

  memset(&args, 0, sizeof(args));

  bool do_sync = true;
  int res;
  {
    std::string path;
    if (make_absolute_path_string(in, path)) {
      ldout(cct, 20) << " absolute path: " << path << dendl;
      res = mds_check_access(path, perms, MAY_WRITE);
      if (res) {
        goto out;
      }
      do_sync = false;
    }
  }

  if (!mask) {
    // caller just needs us to bump the ctime