teraWeb/backend/internal/logstorage/factory_reset.go

package logstorage

import (
	"fmt"
	"os"
	"path/filepath"
)

// FactoryReset removes every journal and export file, even corrupted segments.
// Only fixed service-owned buckets are touched; no path comes from the caller.
func (s *Store) FactoryReset() error {
	s.mu.Lock()
	defer s.mu.Unlock()
	for _, bucket := range []string{"audit", "system", "port", "index", "export"} {
		dir := filepath.Join(s.root, bucket)
		info, err := os.Lstat(dir)
		if err != nil {
			return err
		}
		if !info.IsDir() || info.Mode()&os.ModeSymlink != 0 {
			return fmt.Errorf("unsafe log bucket %s", dir)
		}
		entries, err := os.ReadDir(dir)
		if err != nil {
			return err
		}
		for _, entry := range entries {
			target := filepath.Join(dir, entry.Name())
			if filepath.Dir(target) != dir {
				return fmt.Errorf("unsafe log entry %s", target)
			}
			// RemoveAll unlinks symlinks; it never follows them outside the bucket.
			if err := os.RemoveAll(target); err != nil {
				return err
			}
		}
		if err := syncDirectory(dir); err != nil {
			return err
		}
	}
	s.portClears = portClearState{}
	s.systemClear = systemClearState{}
	s.linkClear = linkClearState{}
	return s.rebuildLocked()
}