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zdtm: Don't fail in __construct_root if entries exist

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Otherwise we might get

 | OSError: [Errno 17] File exists: '/tmp/criu-root-f8klhI/bin'
 |     os.symlink(".." + ldir, self.root + "/usr" + ldir)
 | OSError: [Errno 17] File exists
 |  File "zdtm.py", line 209, in __mknod
 |     os.mknod(name, stat.S_IFCHR, rdev)
 | OSError: [Errno 17] File exists

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Cyrill Gorcunov 2018-05-15 11:12:38 +03:00 committed by Andrei Vagin
parent a77d172d1e
commit b44d39ba5d
1 changed files with 8 additions and 5 deletions
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13
test/zdtm.py
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@ -214,16 +214,19 @@ class ns_flavor:
rdev = os.stat(name).st_rdev
name = self.root + name
os.mknod(name, stat.S_IFCHR, rdev)
os.chmod(name, 0666)
if not os.access(name, os.F_OK):
os.mknod(name, stat.S_IFCHR, rdev)
os.chmod(name, 0666)
def __construct_root(self):
for dir in self.__root_dirs:
os.mkdir(self.root + dir)
os.chmod(self.root + dir, 0777)
if not os.access(self.root + dir, os.F_OK):
os.mkdir(self.root + dir)
os.chmod(self.root + dir, 0777)
for ldir in ["/bin", "/sbin", "/lib", "/lib64"]:
os.symlink(".." + ldir, self.root + "/usr" + ldir)
if not os.access(self.root + "/usr" + ldir, os.F_OK):
os.symlink(".." + ldir, self.root + "/usr" + ldir)
self.__mknod("tty", os.makedev(5, 0))
self.__mknod("null", os.makedev(1, 3))