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# libnbd Python bindings
# Copyright Red Hat
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import nbd
import os
nbdkit = os.getenv("NBDKIT", "nbdkit")
buf1 = bytearray(512)
buf1[10] = 1
buf1[510] = 0x55
buf1[511] = 0xAA
datafile = "410-pwrite.data"
with open(datafile, "wb") as f:
f.truncate(512)
h = nbd.NBD()
h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v",
"file", datafile])
h.pwrite(buf1, 0, nbd.CMD_FLAG_FUA)
buf2 = h.pread(512, 0)
assert buf1 == buf2
with open(datafile, "rb") as f:
content = f.read()
assert buf1 == content
os.unlink(datafile)
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