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update ncruces/go-sqlite3 to v0.21.2 (#3626)

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This commit is contained in:
kim
2024-12-17 23:16:20 +00:00
committed by GitHub
parent 9697df0955
commit c953f57e55
14 changed files with 203 additions and 46 deletions
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79
vendor/github.com/ncruces/go-sqlite3/vfs/shm_bsd.go generated vendored
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@ -4,7 +4,9 @@ package vfs
import (
"context"
"errors"
"io"
"io/fs"
"os"
"sync"
@ -71,23 +73,21 @@ func (s *vfsShm) shmOpen() _ErrorCode {
return _OK
}
// Always open file read-write, as it will be shared.
f, err := os.OpenFile(s.path,
os.O_RDWR|os.O_CREATE|_O_NOFOLLOW, 0666)
if err != nil {
return _CANTOPEN
}
// Closes file if it's not nil.
var f *os.File
// Close file on error.
// Keep this here to avoid confusing checklocks.
defer func() { f.Close() }()
fi, err := f.Stat()
if err != nil {
return _IOERR_FSTAT
}
vfsShmListMtx.Lock()
defer vfsShmListMtx.Unlock()
// Stat file without opening it.
// Closing it would release all POSIX locks on it.
fi, err := os.Stat(s.path)
if err != nil && !errors.Is(err, fs.ErrNotExist) {
return _IOERR_FSTAT
}
// Find a shared file, increase the reference count.
for _, g := range vfsShmList {
if g != nil && os.SameFile(fi, g.info) {
@ -97,13 +97,33 @@ func (s *vfsShm) shmOpen() _ErrorCode {
}
}
// Lock and truncate the file.
// The lock is only released by closing the file.
if rc := osLock(f, unix.LOCK_EX|unix.LOCK_NB, _IOERR_LOCK); rc != _OK {
// Always open file read-write, as it will be shared.
f, err = os.OpenFile(s.path,
os.O_RDWR|os.O_CREATE|_O_NOFOLLOW, 0666)
if err != nil {
return _CANTOPEN
}
// Dead man's switch.
if lock, rc := osTestLock(f, _SHM_DMS, 1); rc != _OK {
return _IOERR_LOCK
} else if lock == unix.F_WRLCK {
return _BUSY
} else if lock == unix.F_UNLCK {
if rc := osWriteLock(f, _SHM_DMS, 1); rc != _OK {
return rc
}
if err := f.Truncate(0); err != nil {
return _IOERR_SHMOPEN
}
}
if rc := osReadLock(f, _SHM_DMS, 1); rc != _OK {
return rc
}
if err := f.Truncate(0); err != nil {
return _IOERR_SHMOPEN
fi, err = f.Stat()
if err != nil {
return _IOERR_FSTAT
}
// Add the new shared file.
@ -157,7 +177,30 @@ func (s *vfsShm) shmMap(ctx context.Context, mod api.Module, id, size int32, ext
func (s *vfsShm) shmLock(offset, n int32, flags _ShmFlag) _ErrorCode {
s.Lock()
defer s.Unlock()
return s.shmMemLock(offset, n, flags)
// Check if we could obtain/release the lock locally.
rc := s.shmMemLock(offset, n, flags)
if rc != _OK {
return rc
}
// Obtain/release the appropriate file lock.
switch {
case flags&_SHM_UNLOCK != 0:
return osUnlock(s.File, _SHM_BASE+int64(offset), int64(n))
case flags&_SHM_SHARED != 0:
rc = osReadLock(s.File, _SHM_BASE+int64(offset), int64(n))
case flags&_SHM_EXCLUSIVE != 0:
rc = osWriteLock(s.File, _SHM_BASE+int64(offset), int64(n))
default:
panic(util.AssertErr())
}
// Release the local lock.
if rc != _OK {
s.shmMemLock(offset, n, flags^(_SHM_UNLOCK|_SHM_LOCK))
}
return rc
}
func (s *vfsShm) shmUnmap(delete bool) {