187 lines
3.9 KiB
Python
187 lines
3.9 KiB
Python
# test VFS functionality without any particular filesystem type
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try:
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import os
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os.mount
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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class Filesystem:
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def __init__(self, id, fail=0):
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self.id = id
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self.fail = fail
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def mount(self, readonly, mkfs):
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print(self.id, "mount", readonly, mkfs)
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def umount(self):
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print(self.id, "umount")
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def ilistdir(self, dir):
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print(self.id, "ilistdir", dir)
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return iter([("a%d" % self.id, 0, 0)])
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def chdir(self, dir):
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print(self.id, "chdir", dir)
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if self.fail:
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raise OSError(self.fail)
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def getcwd(self):
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print(self.id, "getcwd")
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return "dir%d" % self.id
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def mkdir(self, path):
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print(self.id, "mkdir", path)
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def remove(self, path):
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print(self.id, "remove", path)
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def rename(self, old_path, new_path):
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print(self.id, "rename", old_path, new_path)
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def rmdir(self, path):
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print(self.id, "rmdir", path)
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def stat(self, path):
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print(self.id, "stat", path)
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return (self.id,)
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def statvfs(self, path):
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print(self.id, "statvfs", path)
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return (self.id,)
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def open(self, file, mode):
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print(self.id, "open", file, mode)
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# first we umount any existing mount points the target may have
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try:
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os.umount("/")
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except OSError:
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pass
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for path in os.listdir("/"):
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os.umount("/" + path)
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# stat root dir
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print(os.stat("/"))
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# statvfs root dir; verify that f_namemax has a sensible size
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print(os.statvfs("/")[9] >= 32)
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# getcwd when in root dir
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print(os.getcwd())
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# test operations on the root directory with nothing mounted, they should all fail
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for func in ("chdir", "listdir", "mkdir", "remove", "rmdir", "stat"):
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for arg in ("x", "/x"):
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try:
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getattr(os, func)(arg)
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except OSError:
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print(func, arg, "OSError")
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# basic mounting and listdir
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os.mount(Filesystem(1), "/test_mnt")
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print(os.listdir())
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# ilistdir
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i = os.ilistdir()
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print(next(i))
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try:
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next(i)
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except StopIteration:
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print("StopIteration")
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try:
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next(i)
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except StopIteration:
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print("StopIteration")
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# referencing the mount point in different ways
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print(os.listdir("test_mnt"))
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print(os.listdir("/test_mnt"))
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# mounting another filesystem
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os.mount(Filesystem(2), "/test_mnt2", readonly=True)
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print(os.listdir())
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print(os.listdir("/test_mnt2"))
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# mounting over an existing mount point
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try:
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os.mount(Filesystem(3), "/test_mnt2")
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except OSError:
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print("OSError")
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# mkdir of a mount point
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try:
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os.mkdir("/test_mnt")
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except OSError:
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print("OSError")
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# rename across a filesystem
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try:
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os.rename("/test_mnt/a", "/test_mnt2/b")
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except OSError:
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print("OSError")
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# delegating to mounted filesystem
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os.chdir("test_mnt")
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print(os.listdir())
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print(os.getcwd())
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os.mkdir("test_dir")
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os.remove("test_file")
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os.rename("test_file", "test_file2")
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os.rmdir("test_dir")
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print(os.stat("test_file"))
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print(os.statvfs("/test_mnt"))
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open("test_file")
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open("test_file", "wb")
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# umount
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os.umount("/test_mnt")
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os.umount("/test_mnt2")
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# umount a non-existent mount point
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try:
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os.umount("/test_mnt")
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except OSError:
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print("OSError")
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# root dir
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os.mount(Filesystem(3), "/")
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print(os.stat("/"))
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print(os.statvfs("/"))
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print(os.listdir())
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open("test")
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os.mount(Filesystem(4), "/mnt")
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print(os.listdir())
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print(os.listdir("/mnt"))
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os.chdir("/mnt")
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print(os.listdir())
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# chdir to a subdir within root-mounted vfs, and then listdir
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os.chdir("/subdir")
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print(os.listdir())
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os.chdir("/")
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os.umount("/")
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print(os.listdir("/"))
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os.umount("/mnt")
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# chdir to a non-existent mount point (current directory should remain unchanged)
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try:
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os.chdir("/foo")
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except OSError:
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print("OSError")
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print(os.getcwd())
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# chdir to a non-existent subdirectory in a mounted filesystem
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os.mount(Filesystem(5, 1), "/mnt")
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try:
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os.chdir("/mnt/subdir")
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except OSError:
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print("OSError")
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print(os.getcwd())
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