C++ (Cpp) np_set_rread_countの例

コード例 #1

ファイル: ops.c プロジェクト: alepharchives/diod

/* Tread - read from a file or directory.
 */
Npfcall*
diod_read (Npfid *fid, u64 offset, u32 count, Npreq *req)
{
    Fid *f = fid->aux;
    Npfcall *ret = NULL;
    ssize_t n;

    if (!f->ioctx) {
        msg ("diod_read: fid is not open");
        np_uerror (EBADF);
        goto error;
    }
    if (!(ret = np_alloc_rread (count))) {
        np_uerror (ENOMEM);
        goto error;
    }
    n = ioctx_pread (f->ioctx, ret->u.rread.data, count, offset);
    if (n < 0) {
        np_uerror (errno);
        goto error_quiet;
    }
    np_set_rread_count (ret, n);
    return ret;
error:
    errn (np_rerror (), "diod_read %s@%s:%s",
          fid->user->uname, np_conn_get_client_id (fid->conn),
          path_s (f->path));
error_quiet:
    if (ret)
        free (ret);
    return NULL; 
}

コード例 #2

ファイル: ops.c プロジェクト: eugmes/diod

/* Tread - read from a file or directory.
 */
Npfcall*
diod_read (Npfid *fid, u64 offset, u32 count, Npreq *req)
{
    Fid *f = fid->aux;
    Npfcall *ret = NULL;
    ssize_t n;

    if (!(ret = np_alloc_rread (count))) {
        np_uerror (ENOMEM);
        goto error;
    }
    if ((n = pread (f->fd, ret->u.rread.data, count, offset)) < 0) {
        np_uerror (errno);
        goto error_quiet;
    }
    np_set_rread_count (ret, n);
    return ret;
error:
    errn (np_rerror (), "diod_read %s@%s:%s",
          fid->user->uname, np_conn_get_client_id (fid->conn), f->path);
error_quiet:
    if (ret)
        free (ret);
    return NULL; 
}

コード例 #3

ファイル: fcall.c プロジェクト: lowfatcomputing/diod

Npfcall *
np_read(Npreq *req, Npfcall *tc)
{
	int n;
	Npconn *conn = req->conn;
	Npfid *fid = req->fid;
	Npfcall *rc = NULL;

	if (!fid) {
		np_uerror (EIO);
		goto done;
	}
	if (tc->u.tread.count + P9_IOHDRSZ > conn->msize) {
		np_uerror(EIO);
		goto done;
	}

	if (fid->type & P9_QTAUTH) {
		if (conn->srv->auth) {
			rc = np_alloc_rread(tc->u.tread.count);
			if (!rc)
				goto done;

			n = conn->srv->auth->read(fid, tc->u.tread.offset, tc->u.tread.count, rc->u.rread.data);
			if (n >= 0) 
				np_set_rread_count(rc, n);
			else {
				free(rc);
				rc = NULL;
			}
		} else
			np_uerror(EIO);

		goto done;
	}
	if ((fid->type & P9_QTDIR)) {
		np_uerror(EIO);
		goto done;
	}
	if (fid->type & P9_QTTMP) {
		rc = np_ctl_read(fid, tc->u.tread.offset,
				 tc->u.tread.count, req);
	} else {
		if (np_setfsid (req, fid->user, -1) < 0)
			goto done;
		if (!conn->srv->read) {
			np_uerror(ENOSYS);
			goto done;
		}
		rc = (*conn->srv->read)(fid, tc->u.tread.offset,
					tc->u.tread.count, req);
	}

done:
	return rc;
}

コード例 #4

ファイル: tserialize.c プロジェクト: eugmes/diod

static void
test_rread (void)
{
    Npfcall *fc, *fc2;
    u8 buf[128];

    memset (buf, 0xf0, sizeof(buf));

    if (!(fc = np_create_rread (sizeof (buf), buf)))
        msg_exit ("out of memory in %s", __FUNCTION__); 
    np_set_rread_count (fc, sizeof (buf));
    fc2 = _rcv_buf (fc, P9_RREAD, __FUNCTION__);

    assert (fc->u.rread.count == fc2->u.rread.count);
    assert (memcmp (fc->u.rread.data, fc2->u.rread.data, fc->u.rread.count) == 0);

    free (fc);
    free (fc2);
}