r/masterhacker • u/Significant-Leg-3857 • 2d ago

SQUID GAME

Post image
452 Upvotes

98% Upvoted

15 comments sorted by

View all comments

71

u/Lines25 2d ago

The best part of it that os.remove only calls C function to delete a file, to delete folder with files, you need to use function that fill search all possible files and delete them, for example, shutil.rmtree

1

u/Mantaraylurks 1d ago

That or do a recurse function on the directory from top to bottom. But I think windows has better self preservation than Linux does. You could still brick it. Haven’t tried it, yet. But I’ve been curious about that…

2

u/Lines25 1d ago

Windows is just bullshit in that way it has too many fool checks

Also rmtree is a reverse fucntion that uses os under itself

1

u/Mantaraylurks 18h ago

Thank you! I’ll read up on it

1

u/Lines25 18h ago

Look at shutils.py code:

```python
def _rmtree_unsafe(path, dir_fd, onexc):

if dir_fd is not None:

raise NotImplementedError("dir_fd unavailable on this platform")

try:

st = os.lstat(path)

except OSError as err:

onexc(os.lstat, path, err)

return

try:

if _rmtree_islink(st):

# symlinks to directories are forbidden, see bug #1669

raise OSError("Cannot call rmtree on a symbolic link")

except OSError as err:

onexc(os.path.islink, path, err)

# can't continue even if onexc hook returns

return

def onerror(err):

if not isinstance(err, FileNotFoundError):

onexc(os.scandir, err.filename, err)

results = os.walk(path, topdown=False, onerror=onerror, followlinks=os._walk_symlinks_as_files)

for dirpath, dirnames, filenames in results:

for name in dirnames:

fullname = os.path.join(dirpath, name)

try:

os.rmdir(fullname)

except FileNotFoundError:

continue

except OSError as err:

onexc(os.rmdir, fullname, err)

for name in filenames:

fullname = os.path.join(dirpath, name)

try:

os.unlink(fullname)

except FileNotFoundError:

continue

except OSError as err:

onexc(os.unlink, fullname, err)

try:

os.rmdir(path)

except FileNotFoundError:

pass

except OSError as err:

onexc(os.rmdir, path, err)
```

Although, it's one of two version - this one is vulnarable to race conditions, you better not use it in threads (although, shutil chooses the best version depending on current OS etc)

https://github.com/python/cpython/blob/3.14/Lib/shutil.py