71adf506ce
Prior to this commit, uos.chdir('/') followed by uos.stat('noexist') would
succeed that stat even though the entry did not exist (some other functions
like listdir would have similar issues). This is because, if the current
directory was the root and the path was relative, mp_vfs_lookup_path would
return success for bad paths.
Signed-off-by: Damien George <damien@micropython.org>
187 lines
4.0 KiB
Python
187 lines
4.0 KiB
Python
# test VFS functionality without any particular filesystem type
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try:
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import uos
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uos.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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uos.umount("/")
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except OSError:
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pass
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for path in uos.listdir("/"):
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uos.umount("/" + path)
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# stat root dir
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print(uos.stat("/"))
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# statvfs root dir; verify that f_namemax has a sensible size
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print(uos.statvfs("/")[9] >= 32)
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# getcwd when in root dir
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print(uos.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(uos, 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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uos.mount(Filesystem(1), "/test_mnt")
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print(uos.listdir())
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# ilistdir
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i = uos.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(uos.listdir("test_mnt"))
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print(uos.listdir("/test_mnt"))
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# mounting another filesystem
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uos.mount(Filesystem(2), "/test_mnt2", readonly=True)
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print(uos.listdir())
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print(uos.listdir("/test_mnt2"))
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# mounting over an existing mount point
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try:
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uos.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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uos.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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uos.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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uos.chdir("test_mnt")
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print(uos.listdir())
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print(uos.getcwd())
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uos.mkdir("test_dir")
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uos.remove("test_file")
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uos.rename("test_file", "test_file2")
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uos.rmdir("test_dir")
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print(uos.stat("test_file"))
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print(uos.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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uos.umount("/test_mnt")
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uos.umount("/test_mnt2")
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# umount a non-existent mount point
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try:
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uos.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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uos.mount(Filesystem(3), "/")
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print(uos.stat("/"))
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print(uos.statvfs("/"))
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print(uos.listdir())
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open("test")
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uos.mount(Filesystem(4), "/mnt")
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print(uos.listdir())
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print(uos.listdir("/mnt"))
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uos.chdir("/mnt")
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print(uos.listdir())
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# chdir to a subdir within root-mounted vfs, and then listdir
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uos.chdir("/subdir")
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print(uos.listdir())
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uos.chdir("/")
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uos.umount("/")
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print(uos.listdir("/"))
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uos.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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uos.chdir("/foo")
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except OSError:
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print("OSError")
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print(uos.getcwd())
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# chdir to a non-existent subdirectory in a mounted filesystem
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uos.mount(Filesystem(5, 1), "/mnt")
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try:
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uos.chdir("/mnt/subdir")
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except OSError:
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print("OSError")
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print(uos.getcwd())
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