try: import uerrno import uos except ImportError: print("SKIP") raise SystemExit try: uos.VfsFat except 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: # 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(50) except MemoryError: print("SKIP") raise SystemExit uos.VfsFat.mkfs(bdev) vfs = uos.VfsFat(bdev) uos.mount(vfs, '/ramdisk') uos.chdir('/ramdisk') try: vfs.mkdir("foo_dir") except OSError as e: print(e.args[0] == uerrno.EEXIST) try: vfs.remove("foo_dir") except OSError as e: print(e.args[0] == uerrno.EISDIR) try: vfs.remove("no_file.txt") except OSError as e: print(e.args[0] == uerrno.ENOENT) try: vfs.rename("foo_dir", "/null/file") except OSError as e: print(e.args[0] == uerrno.ENOENT) # file in dir with open("foo_dir/file-in-dir.txt", "w+t") as f: f.write("data in file") with open("foo_dir/file-in-dir.txt", "r+b") as f: print(f.read()) with open("foo_dir/sub_file.txt", "w") as f: f.write("subdir file") # directory not empty try: vfs.rmdir("foo_dir") except OSError as e: print(e.args[0] == uerrno.EACCES) # trim full path vfs.rename("foo_dir/file-in-dir.txt", "foo_dir/file.txt") print(list(vfs.ilistdir("foo_dir"))) vfs.rename("foo_dir/file.txt", "moved-to-root.txt") print(list(vfs.ilistdir())) # check that renaming to existing file will overwrite it with open("temp", "w") as f: f.write("new text") vfs.rename("temp", "moved-to-root.txt") print(list(vfs.ilistdir())) with open("moved-to-root.txt") as f: print(f.read()) # valid removes vfs.remove("foo_dir/sub_file.txt") vfs.rmdir("foo_dir") print(list(vfs.ilistdir())) # disk full try: bsize = vfs.statvfs("/ramdisk")[0] free = vfs.statvfs("/ramdisk")[2] + 1 f = open("large_file.txt", "wb") f.write(bytearray(bsize * free)) except OSError as e: print("ENOSPC:", e.args[0] == 28) # uerrno.ENOSPC