|
| 1 | +import sys |
| 2 | +import uos |
| 3 | +import uerrno |
| 4 | +try: |
| 5 | + uos.VfsFat |
| 6 | +except AttributeError: |
| 7 | + print("SKIP") |
| 8 | + sys.exit() |
| 9 | + |
| 10 | + |
| 11 | +class RAMFS: |
| 12 | + |
| 13 | + SEC_SIZE = 512 |
| 14 | + |
| 15 | + def __init__(self, blocks): |
| 16 | + self.data = bytearray(blocks * self.SEC_SIZE) |
| 17 | + |
| 18 | + def readblocks(self, n, buf): |
| 19 | + #print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf))) |
| 20 | + for i in range(len(buf)): |
| 21 | + buf[i] = self.data[n * self.SEC_SIZE + i] |
| 22 | + |
| 23 | + def writeblocks(self, n, buf): |
| 24 | + #print("writeblocks(%s, %x)" % (n, id(buf))) |
| 25 | + for i in range(len(buf)): |
| 26 | + self.data[n * self.SEC_SIZE + i] = buf[i] |
| 27 | + |
| 28 | + def ioctl(self, op, arg): |
| 29 | + #print("ioctl(%d, %r)" % (op, arg)) |
| 30 | + if op == 4: # BP_IOCTL_SEC_COUNT |
| 31 | + return len(self.data) // self.SEC_SIZE |
| 32 | + if op == 5: # BP_IOCTL_SEC_SIZE |
| 33 | + return self.SEC_SIZE |
| 34 | + |
| 35 | + |
| 36 | +try: |
| 37 | + bdev = RAMFS(48) |
| 38 | +except MemoryError: |
| 39 | + print("SKIP") |
| 40 | + sys.exit() |
| 41 | + |
| 42 | +# can't mkfs readonly device |
| 43 | +try: |
| 44 | + uos.vfs_mkfs(bdev, "/ramdisk", readonly=True) |
| 45 | +except OSError as e: |
| 46 | + print(e) |
| 47 | + |
| 48 | +# mount before mkfs |
| 49 | +try: |
| 50 | + uos.vfs_mount(bdev, "/ramdisk") |
| 51 | +except OSError as e: |
| 52 | + print(e) |
| 53 | + |
| 54 | +# invalid umount |
| 55 | +try: |
| 56 | + uos.vfs_umount("/ramdisk") |
| 57 | +except OSError as e: |
| 58 | + print(e.args[0] == uerrno.EINVAL) |
| 59 | + |
| 60 | +try: |
| 61 | + uos.vfs_mount(None, "/ramdisk") |
| 62 | +except OSError as e: |
| 63 | + print(e) |
| 64 | + |
| 65 | +try: |
| 66 | + uos.vfs_mkfs(None, "/ramdisk") |
| 67 | +except OSError as e: |
| 68 | + print(e) |
| 69 | + |
| 70 | +# valid mkfs/mount |
| 71 | +uos.vfs_mkfs(bdev, "/ramdisk") |
| 72 | +uos.vfs_mount(bdev, "/ramdisk") |
| 73 | + |
| 74 | +# umount by path |
| 75 | +uos.vfs_umount("/ramdisk") |
| 76 | + |
| 77 | +# readonly mount |
| 78 | +uos.vfs_mount(bdev, "/ramdisk", readonly=True) |
| 79 | +vfs = uos.VfsFat(bdev, "/ramdisk") |
| 80 | +try: |
| 81 | + f = vfs.open("file.txt", "w") |
| 82 | +except OSError as e: |
| 83 | + print("EROFS:", e.args[0] == 30) # uerrno.EROFS |
| 84 | + |
| 85 | +# device is None == umount |
| 86 | +uos.vfs_mount(None, "/ramdisk") |
| 87 | + |
| 88 | +# max mounted devices |
| 89 | +dev = [] |
| 90 | +try: |
| 91 | + for i in range(0,4): |
| 92 | + dev.append(RAMFS(48)) |
| 93 | + uos.vfs_mkfs(dev[i], "/ramdisk" + str(i)) |
| 94 | + uos.vfs_mount(dev[i], "/ramdisk" + str(i)) |
| 95 | +except OSError as e: |
| 96 | + print(e) |
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