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author | 2025-03-09 17:47:56 +0100 | |
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committer | 2025-03-10 01:59:49 +0100 | |
commit | 3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch) | |
tree | f61faa581feaaeaba2542b9f2b8234a590684413 /vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go | |
parent | [chore] update URLs to forked source (diff) | |
download | gotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz |
[chore] remove vendor
Diffstat (limited to 'vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go')
-rw-r--r-- | vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go b/vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go deleted file mode 100644 index 4f6fadef4..000000000 --- a/vendor/github.com/ncruces/go-sqlite3/vfs/os_bsd.go +++ /dev/null @@ -1,101 +0,0 @@ -//go:build ((freebsd || openbsd || netbsd || dragonfly || illumos) && !sqlite3_dotlk) || sqlite3_flock - -package vfs - -import ( - "os" - - "golang.org/x/sys/unix" -) - -func osGetSharedLock(file *os.File) _ErrorCode { - return osFlock(file, unix.LOCK_SH|unix.LOCK_NB, _IOERR_RDLOCK) -} - -func osGetReservedLock(file *os.File) _ErrorCode { - rc := osFlock(file, unix.LOCK_EX|unix.LOCK_NB, _IOERR_LOCK) - if rc == _BUSY { - // The documentation states that a lock is upgraded by - // releasing the previous lock, then acquiring the new lock. - // Going over the source code of various BSDs, though, - // with LOCK_NB, the lock is not released, - // and EAGAIN is returned holding the shared lock. - // Still, if we're already in a transaction, we want to abort it, - // so return BUSY_SNAPSHOT here. If there's no transaction active, - // SQLite will change this back to SQLITE_BUSY, - // and invoke the busy handler if appropriate. - return _BUSY_SNAPSHOT - } - return rc -} - -func osGetExclusiveLock(file *os.File, state *LockLevel) _ErrorCode { - if *state >= LOCK_RESERVED { - return _OK - } - return osGetReservedLock(file) -} - -func osDowngradeLock(file *os.File, _ LockLevel) _ErrorCode { - rc := osFlock(file, unix.LOCK_SH|unix.LOCK_NB, _IOERR_RDLOCK) - if rc == _BUSY { - // The documentation states that a lock is downgraded by - // releasing the previous lock then acquiring the new lock. - // Going over the source code of various BSDs, though, - // with LOCK_SH|LOCK_NB this should never happen. - // Return IOERR_RDLOCK, as BUSY would cause an assert to fail. - return _IOERR_RDLOCK - } - return _OK -} - -func osReleaseLock(file *os.File, _ LockLevel) _ErrorCode { - err := unix.Flock(int(file.Fd()), unix.LOCK_UN) - if err != nil { - return _IOERR_UNLOCK - } - return _OK -} - -func osCheckReservedLock(file *os.File) (bool, _ErrorCode) { - // Test the RESERVED lock with fcntl(F_GETLK). - // This only works on systems where fcntl and flock are compatible. - // However, SQLite only calls this while holding a shared lock, - // so the difference is immaterial. - lock, rc := osTestLock(file, _RESERVED_BYTE, 1) - return lock == unix.F_WRLCK, rc -} - -func osFlock(file *os.File, how int, def _ErrorCode) _ErrorCode { - err := unix.Flock(int(file.Fd()), how) - return osLockErrorCode(err, def) -} - -func osReadLock(file *os.File, start, len int64) _ErrorCode { - return osLock(file, unix.F_RDLCK, start, len, _IOERR_RDLOCK) -} - -func osWriteLock(file *os.File, start, len int64) _ErrorCode { - return osLock(file, unix.F_WRLCK, start, len, _IOERR_LOCK) -} - -func osLock(file *os.File, typ int16, start, len int64, def _ErrorCode) _ErrorCode { - err := unix.FcntlFlock(file.Fd(), unix.F_SETLK, &unix.Flock_t{ - Type: typ, - Start: start, - Len: len, - }) - return osLockErrorCode(err, def) -} - -func osUnlock(file *os.File, start, len int64) _ErrorCode { - err := unix.FcntlFlock(file.Fd(), unix.F_SETLK, &unix.Flock_t{ - Type: unix.F_UNLCK, - Start: start, - Len: len, - }) - if err != nil { - return _IOERR_UNLOCK - } - return _OK -} |