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try:
import errno, os, vfs
vfs.VfsFat
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class RAMFS:
SEC_SIZE = 512
def __init__(self, blocks):
self.data = bytearray(blocks * self.SEC_SIZE)
def readblocks(self, n, buf):
# print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
for i in range(len(buf)):
buf[i] = self.data[n * self.SEC_SIZE + i]
def writeblocks(self, n, buf):
# print("writeblocks(%s, %x)" % (n, id(buf)))
for i in range(len(buf)):
self.data[n * self.SEC_SIZE + i] = buf[i]
def ioctl(self, op, arg):
# print("ioctl(%d, %r)" % (op, arg))
if op == 4: # MP_BLOCKDEV_IOCTL_BLOCK_COUNT
return len(self.data) // self.SEC_SIZE
if op == 5: # MP_BLOCKDEV_IOCTL_BLOCK_SIZE
return self.SEC_SIZE
try:
bdev = RAMFS(50)
vfs.VfsFat.mkfs(bdev)
except MemoryError:
print("SKIP")
raise SystemExit
print(b"FOO_FILETXT" not in bdev.data)
print(b"hello!" not in bdev.data)
fs = vfs.VfsFat(bdev)
vfs.mount(fs, "/ramdisk")
print("statvfs:", fs.statvfs("/ramdisk"))
print("getcwd:", fs.getcwd())
try:
fs.stat("no_file.txt")
except OSError as e:
print(e.errno == errno.ENOENT)
with fs.open("foo_file.txt", "w") as f:
f.write("hello!")
print(list(fs.ilistdir()))
print("stat root:", fs.stat("/")[:-3]) # timestamps differ across runs
print("stat file:", fs.stat("foo_file.txt")[:-3]) # timestamps differ across runs
print(b"FOO_FILETXT" in bdev.data)
print(b"hello!" in bdev.data)
fs.mkdir("foo_dir")
fs.chdir("foo_dir")
print("getcwd:", fs.getcwd())
print(list(fs.ilistdir()))
with fs.open("sub_file.txt", "w") as f:
f.write("subdir file")
try:
fs.chdir("sub_file.txt")
except OSError as e:
print(e.errno == errno.ENOENT)
fs.chdir("..")
print("getcwd:", fs.getcwd())
vfs.umount(fs)
fs = vfs.VfsFat(bdev)
print(list(fs.ilistdir(b"")))
# list a non-existent directory
try:
fs.ilistdir(b"no_exist")
except OSError as e:
print("ENOENT:", e.errno == errno.ENOENT)
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