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windows: safeguard against parallel deletes

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st_ino is valid for NTFS on python3, good enough
This commit is contained in:
ed 2024-01-17 23:32:37 +00:00
parent b9d0c8536b
commit aa3a971961
1 changed files with 6 additions and 0 deletions
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6
copyparty/util.py
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@ -2092,9 +2092,13 @@ def wunlink(log: "NamedLogger", abspath: str, flags: dict[str, Any]) -> bool:
if chill < 0.001: if chill < 0.001:
chill = 0.1 chill = 0.1
ino = 0
t0 = now = time.time() t0 = now = time.time()
for attempt in range(90210): for attempt in range(90210):
try: try:
if ino and os.stat(bpath).st_ino != ino:
log("inode changed; aborting delete")
return False
os.unlink(bpath) os.unlink(bpath)
if attempt: if attempt:
now = time.time() now = time.time()
@ -2108,6 +2112,8 @@ def wunlink(log: "NamedLogger", abspath: str, flags: dict[str, Any]) -> bool:
if now - t0 > maxtime or attempt == 90209: if now - t0 > maxtime or attempt == 90209:
raise raise
if not attempt: if not attempt:
if not PY2:
ino = os.stat(bpath).st_ino
t = "delete failed (err.%d); retrying for %d sec: %s" t = "delete failed (err.%d); retrying for %d sec: %s"
log(t % (ex.errno, maxtime + 0.99, abspath)) log(t % (ex.errno, maxtime + 0.99, abspath))