Date: Tue, 02 Apr 2024 16:27:40 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 278135] fusefs: pathconf(_PC_MIN_HOLE_SIZE) fails on new mountpoint with unopened file Message-ID: <bug-278135-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278135 Bug ID: 278135 Summary: fusefs: pathconf(_PC_MIN_HOLE_SIZE) fails on new mountpoint with unopened file Product: Base System Version: 15.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: asomers@FreeBSD.org When a program calls pathconf(path, _PC_MIN_HOLE_SIZE) on a fusefs file system, if the kernel doesn't already know whether the file system supports FUSE_LSEEK, it must issue a FUSE_LSEEK operation to find out. It sends that operation to the provided path. BUT, the current implementation neglects to ensure that a fuse file handle is open. That's a bug. We never noticed it before because the test suite only uses fpathconf, not pathconf. Steps to Reproduce ================== 1) Mount a file system that is known to support FUSE_LSEEK 2) Without doing any open(), stat(), access(), or similar, try pathconf("/mountpoint/hello.txt", _PC_MIN_HOLE_SIZE) 3) It ought to return 1, but it will instead fail with EINVAL -- You are receiving this mail because: You are the assignee for the bug.home | help
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