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import sys
import uos
import uerrno
try:
uos.VfsFat
except AttributeError:
print("SKIP")
sys.exit()
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: # BP_IOCTL_SEC_COUNT
return len(self.data) // self.SEC_SIZE
if op == 5: # BP_IOCTL_SEC_SIZE
return self.SEC_SIZE
try:
bdev = RAMFS(48)
except MemoryError:
print("SKIP")
sys.exit()
uos.VfsFat.mkfs(bdev)
assert b"FOO_FILETXT" not in bdev.data
assert b"hello!" not in bdev.data
vfs = uos.VfsFat(bdev, "/ramdisk")
print("statvfs:", vfs.statvfs("/ramdisk"))
print("getcwd:", vfs.getcwd())
f = vfs.open("foo_file.txt", "w")
f.write("hello!")
f.close()
f2 = vfs.open("foo_file.txt")
print(f2.read())
f2.close()
assert b"FOO_FILETXT" in bdev.data
assert b"hello!" in bdev.data
assert vfs.listdir() == ['foo_file.txt']
try:
vfs.rmdir("foo_file.txt")
except OSError as e:
print(e.args[0] == 20) # uerrno.ENOTDIR
vfs.remove('foo_file.txt')
assert vfs.listdir() == []
vfs.mkdir("foo_dir")
assert vfs.listdir() == ['foo_dir']
try:
vfs.remove("foo_dir")
except OSError as e:
print(e.args[0] == uerrno.EISDIR)
f = vfs.open("foo_dir/file-in-dir.txt", "w")
f.write("data in file")
f.close()
assert vfs.listdir("foo_dir") == ['file-in-dir.txt']
vfs.rename("foo_dir/file-in-dir.txt", "moved-to-root.txt")
assert vfs.listdir() == ['foo_dir', 'moved-to-root.txt']
vfs.chdir("foo_dir")
print("getcwd:", vfs.getcwd())
assert vfs.listdir() == []
with vfs.open("sub_file.txt", "w") as f:
f.write("test2")
assert vfs.listdir() == ["sub_file.txt"]
try:
vfs.chdir("sub_file.txt")
except OSError as e:
print(e.args[0] == uerrno.ENOENT)
vfs.chdir("..")
print("getcwd:", vfs.getcwd())
try:
vfs.rmdir("foo_dir")
except OSError as e:
print(e.args[0] == uerrno.EACCES)
vfs.remove("foo_dir/sub_file.txt")
vfs.rmdir("foo_dir")
print(vfs.listdir())
vfs.umount()
try:
vfs.listdir()
except OSError as e:
assert e.args[0] == uerrno.ENODEV
else:
raise AssertionError("expected OSError not thrown")
vfs = uos.VfsFat(bdev, "/ramdisk")
assert vfs.listdir() == ['moved-to-root.txt']
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