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| author | Serhiy Storchaka <storchaka@gmail.com> | 2024-04-17 09:58:19 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-04-17 09:58:19 (GMT) |
| commit | 4e502a4997af4c8042a6ac13115a3f8ba31520ea (patch) | |
| tree | f72e94e13c5814e8fe32b463c26b5b9964e195c3 /Lib | |
| parent | 51132da0c4dac13500d9bb86b2fdad42091d3fd9 (diff) | |
| download | cpython-4e502a4997af4c8042a6ac13115a3f8ba31520ea.zip cpython-4e502a4997af4c8042a6ac13115a3f8ba31520ea.tar.gz cpython-4e502a4997af4c8042a6ac13115a3f8ba31520ea.tar.bz2 | |
gh-117394: Speed up os.path.ismount() on Posix (GH-117447)
It is now 2-3 times faster if the user has permissions.
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/posixpath.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Lib/posixpath.py b/Lib/posixpath.py index 11cbaca..79cda50 100644 --- a/Lib/posixpath.py +++ b/Lib/posixpath.py @@ -206,11 +206,14 @@ def ismount(path): parent = join(path, b'..') else: parent = join(path, '..') - parent = realpath(parent) try: s2 = os.lstat(parent) - except (OSError, ValueError): - return False + except OSError: + parent = realpath(parent) + try: + s2 = os.lstat(parent) + except OSError: + return False # path/.. on a different device as path or the same i-node as path return s1.st_dev != s2.st_dev or s1.st_ino == s2.st_ino |