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import os
from tool_box import *
def mount_union(ctx):
cfg = ctx.config()
union_mntroot = cfg.union_mntroot()
testdir = cfg.testdir()
if cfg.testing_none():
lower_mntroot = cfg.lower_mntroot()
system("mount -o remount,rw " + lower_mntroot)
system("mount -o bind " + lower_mntroot + " " + union_mntroot)
ctx.note_upper_fs(lower_mntroot, testdir)
elif cfg.testing_unionmount():
system("/root/util-linux-union/mount/mount -i -t tmpfs upper_layer " +
union_mntroot + " -o union")
ctx.note_upper_fs(testdir, testdir)
if ctx.lower_fs() == ctx.upper_fs():
raise TestError("Upper (" + ctx.upper_fs() + " and lower (" + ctx.lower_fs() +
") shouldn't be the same")
else:
lower_mntroot = cfg.lower_mntroot()
upper_mntroot = cfg.upper_mntroot()
if not os.path.exists(upper_mntroot):
os.makedirs(upper_mntroot)
system("mount -t tmpfs upper_layer " + upper_mntroot)
upperdir = upper_mntroot + "/upper"
workdir = upper_mntroot + "/work"
os.mkdir(upperdir)
os.mkdir(workdir)
system("mount -t overlay overlayfs " + union_mntroot +
" -olowerdir=" + lower_mntroot + ",upperdir=" + upperdir + ",workdir=" + workdir)
ctx.note_upper_fs(upper_mntroot, testdir)
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